СОГЛАСУЮЩАЯ ЛАЗЕРНАЯ ОПТИЧЕСКАЯ СИСТЕМА ДЛЯ ОБЕСПЕЧЕНИЯ ПОСТОЯНСТВА РАЗМЕРА И ПОЛОЖЕНИЯ ВЫХОДНОЙ ПЕРЕТЯЖКИ

Изобретение относится к оптике, а точнее к лазерным оптическим системам. Согласующая лазерная оптическая система выполнена с возможностью обеспечения постоянства размера и положения выходной перетяжки при вариациях размера входной перетяжки и включает в себя лазер, пучок которого с параметром конфокальности Zk имеет исходную перетяжку с переменным в диапазоне [hp,min; hp,max] радиусом при номинальном значении hp0, а также оптическую систему, состоящую из первого и второго подвижных компонентов, выполненную с возможностью формирования в плоскости облучаемого объекта выходной перетяжки лазерного пучка постоянного размера h′p и на постоянном расстоянии L от исходной перетяжки. Технический результат - обеспечение постоянства размера и положения выходной перетяжки относительно исходной перетяжки. 5 ил.

ЛИНЗА ДЛЯ ФОРМИРОВАНИЯ ИЗЛУЧЕНИЯ ЛАЗЕРНОГО ДИОДА

Линза для формирования излучения лазерного диода включает расположенные по ходу излучения излучающего элемента диода внутреннюю и внешнюю поверхности. Центральная зона внутренней поверхности имеет оптическую силу, обеспечивающую коллимирование потока излучения. Внешняя поверхность линзы имеет призменную форму, вершина которой расположена от источника излучения, и содержит основную поверхность, расположенную в непосредственной близости от излучающего элемента диода, и вспомогательную поверхность, установленную под углом к продольной оси линзы и к основной поверхности. Углы расположения внешней основной и вспомогательной поверхностей линзы выбраны таким образом, чтобы обеспечить угол полного внутреннего отражения. Поток излучения излучающего элемента полностью отражается от внутренней стороны основной поверхности внутрь корпуса линзы и выходит под прямым углом к ее вспомогательной поверхности. Технический результат заключается в создании оптического устройства, обеспечивающего максимальную ...

ТВЕРДОТЕЛЬНЫЙ ЛАЗЕР (ВАРИАНТЫ)

Изобретение относится к области лазерной техники и может быть использовано для формирования пучка Nd: YAG лазеров с расходимостью 10-20 мрад. Лазер включает излучатель, систему зеркал и оптическую стабилизирующую систему на оптической оси излучателя. По первому варианту расстояние между излучателем и оптической стабилизирующей системой и оптической стабилизирующей системой и выходом из зоны обработки выбираются из соотношения (0,8-1,2):(10-20) системой. По второму варианту оптическая стабилизирующая система выполнена трехэлементной из последовательно расположенных вдоль оси лазера рассеивающей двояковогнутой и двух рассеивающих длиннофокусных плосковыпуклых линз. Соотношение расстояний между двояковогнутой и первой плосковогнутой и первой плосковогнутой и второй плосковогнутой линзами находятся в пределах (1,2-1,7):(1,1-1,6). Обеспечено повышение стабильности геометрических параметров лазерного луча на обрабатываемой поверхности с неизменным положением фокального пятна. 2 с.п. ф-лы. 4 ил ...

МОДУЛЬНАЯ СБОРКА НА ОСНОВЕ СИД

Изобретение относится к осветительной системе, содержащей: плату СИД, несущую СИДы; и оптическую плату на плате СИД; причем оптическая плата выполнена из оптических модулей, расположенных рядом друг с другом согласно заранее определенным ориентациям по отношению друг к другу, причем каждый оптический модуль содержит, по меньшей мере, один оптический элемент, выполненный с возможностью быть обращенным к, по меньшей мере, одному из упомянутых СИДов и изменять параметр света, излучаемого этим, по меньшей мере, одним СИД, причем осветительная система снабжена механическими элементами защиты от неправильного обращения, выполненными с возможностью препятствовать размещению оптических модулей согласно ориентациям по отношению друг к другу, отличным от упомянутых заранее определенных ориентаций. 2 н. и 12 з.п. ф-лы, 20 ил.

ОСВЕТИТЕЛЬНОЕ УСТРОЙСТВО С ЛИНЕЙКОЙ ЛАЗЕРНЫХ ДИОДОВ

Осветительное устройство (1) содержит линейку (100) лазерных диодов с несколькими излучателями (101, 102, 103), расположенными в первом направлении рядом друг с другом с возможностью излучения частичных лучей (10, 11, 12) при работе; коллиматор (2) быстрой оси; средство (3) преобразования луча, расположенное за коллиматором (2) быстрой оси в направлении распространения луча и выполненное с возможностью поворота частичных лучей (10, 11, 12) на 90º при их прохождении через указанное средство и решетку (4) призм, которая расположена за средством (3) преобразования луча в направлении распространения луча и включает в себя множество призм (40, 40’), соответствующее числу излучателей (101, 102, 103). Входные (400’) и/или выходные (401’) световые поверхности призм (40’), через которые проходят частичные лучи (12), имеющие смещение по высоте до поворота луча указанным средством (3) преобразования луча, выполнены таким образом, чтобы корректировать ошибку вектора Пойнтинга путем параллелизации указанных ...

УСТРОЙСТВО ГОМОГЕНИЗАЦИИ СВЕТА, А ТАКЖЕ СПОСОБ ИЗГОТОВЛЕНИЯ УСТРОЙСТВА

Способ предназначен для изготовления устройства гомогенизации света, имеющего, по меньшей мере, один субстрат (1), по меньшей мере, с одной оптически функциональной поверхностью с большим количеством линзовых элементов (2), имеющих систематические неравномерности поверхности. На первом этапе линзовые элементы (2) формируют, по меньшей мере, в одной оптически функциональной поверхности, по меньшей мере, одного субстрата (1). На следующем этапе по меньшей мере один субстрат (1) разделяют, по меньшей мере, на две части (3, 4), затем, по меньшей мере, две, по меньшей мере, из двух частей, по меньшей мере, одного субстрата (1) при другой ориентации, по меньшей мере, одной из частей (4), снова соединяют. Посредством другой ориентации, по меньшей мере, одной, по меньшей мере, из двух частей предотвращается возможность суммирования отклонений света, вызванных систематическими неравномерностями поверхности, после прохождения через отдельные линзовые элементы частей. Технический результат - повышение ...

ОПТИЧЕСКАЯ СИСТЕМА ДЛЯ ПОЛУПРОВОДНИКОВЫХ ЛАЗЕРОВ

Оптическая система включает два канала, каждый из которых состоит из коллимирующего объектива 1 и преломляющего компонента 2, и суммирующий компонент 3, установленный за преломляющими компонентами 2 обоих каналов и имеющий поверхность с поляризационным покрытием. Каналы повернуты так, что плоскости поляризации излучения лазеров взаимно ортогональны, а их оптические оси пересекаются на поверхности суммирующего компонента с поляризационным покрытием и совпадают за суммирующим компонентом. Поляризационное покрытие полностью пропускает излучение, поляризованное в плоскости падения на данную поверхность, и полностью отражает излучение, поляризованное в перпендикулярной плоскости. При этом фокусные расстояния объективов, размер тела свечения в плоскости полупроводникового перехода и угловые расходимости коллимированного объективом пучка связаны соотношениями, приведенными в формуле изобретения. Технический результат - увеличение плотности мощности и равномерности углового распределения интенсивности ...

СВЕТОВОЙ ПРИБОР

... 1. Световой прибор, содержащий источник первичного оптического излучения и, по крайней мере, одно светоперераспределяющее устройство в виде мягкой диафрагмы, отличающийся тем, что светоперераспределяющее устройство выполнено в виде комбинации, по крайней мере, двух оптических элементов, последовательно расположенных по направлению распространения светового потока, формируемого источником первичного оптического излучения и проходящего сквозь них, причем формообразующая поверхность, хотя бы одного из оптических элементов, изготовлена с возможностью обеспечения, по крайней мере, одного локального оптического контакта с другим оптическим элементом, при этом светоперераспределяющее устройство дополнительно снабжено устройством изменения площади зоны указанного оптического контакта.2. Устройство по п. 1, отличающееся тем, что оптические элементы светоперераспределяющего устройства выполнены в виде двух линз, с плоской и выпуклой формообразующими поверхностями каждая, локальный оптический контакт ...

КОЛЛИМИРУЮЩАЯ ОПТИЧЕСКАЯ СИСТЕМА ДЛЯ ПОЛУПРОВОДНИКОВОГО ЛАЗЕРА

Коллимирующая оптическая система для полупроводникового лазера содержит последовательно установленные и оптически сопряженные источник лазерного излучения, объектив, две прямые оптические призмы, преломляющие углы которых одинаковы и выбраны в пределах от 20 до 42 градусов, а их ребра ориентированы перпендикулярно плоскости полупроводникового перехода. За призмами по ходу лучей установлена телескопическая оптическая система с увеличением Кт, равнымгде а- размер излучающей области полупроводникового лазера в плоскости, параллельной плоскости полупроводникового перехода, φ - требуемая расходимость излучения, F - фокусное расстояние объектива, α - угол падения пучков лазерного излучения на призмы, β - преломляющие углы призм. Технический результат - оптимизация габаритов при существенном уменьшении расходимости лазерного излучения. 1 ил.

УСТРОЙСТВО ДЛЯ ПРЕОБРАЗОВАНИЯ ЭЛЕКТРОМАГНИТНОГО ИЗЛУЧЕНИЯ В КОГЕРЕНТНУЮ ФОРМУ

Предлагаемое изобретение относится к области технической физики и может быть использовано в качестве плоскостного преобразователя электромагнитного излучения в когерентную форму. Устройство содержит подложку, на которой сформированы две самоаффинные топологии, имеющие общие оси фрактализации и центр, а модули каждой из них подобны соответствующим им модулям первой самоаффинной топологии. При этом дополнительно на подложке сформирована третья самоаффинная топология, радиус R3 базовой окружности которой равен . Технический результат заключается в увеличении широкополосности получаемого когерентного излучения, а также увеличении степени когерентности излучения, а также увеличении степени когерентности излучения. 3 з.п. ф-лы, 8 ил.

Способ и устройство эмуляции атмосферной турбулентности для настройки и тестирования адаптивных оптических систем

Способ эмуляции атмосферной турбулентности для настройки и тестирования оптических систем осуществляется с помощью стенда, на котором устанавливаются два и более источника лазерного излучения с разной длиной волны, формирующие оптические пучки, которые поступают на оптические дефлекторы, программно задающие углы наклона волнового фронта и соосно совмещаются друг с другом в пределах площади поперечного сечения первого пучка. На оптической оси каждого источника лазерного излучения на равной высоте установлены светофильтр, точечная диафрагма, масштабирующая оптика, регулируемая диафрагма, светоделительный кубик и пьезокерамический дефлектор, подключенный к блоку управления от ЭВМ. Технический результат - возможность генерировать оптический пучок с турбулентными искажениями и программного управления параметрами оптического пучка, а так же возможность отработки алгоритмов адаптивной коррекции, исследования и тестирования элементов оптических систем с возможностью моделирования и многократного ...

ИЗЛУЧАЮЩИЙ СУММАТОР

Излучающий сумматор включает излучающие источники с излучающими полосками и отображающее средство, расположенное между источниками и выходом сумматора и содержащее средство формирования излучения. Оптическая длина от выходного торца каждого из излучающих источников до выхода сумматора равна (L± ΔL), где Δ L - отклонение оптической длины, составляющее не более 10% от L. В средство формирования введено оптическое средство суммирования излучения, выполненное в виде призмы, имеющей входную грань, расположенную перпендикулярно оптическим осям пучков излучения, и отражающие грани, после отражения от которых оптические оси пучков излучения расположены параллельно в плоскости, параллельной коротким сторонам излучающих полосок, с возможностью частичного перекрытия пучков излучения. Средства коллимирования излучения в плоскостях, параллельных коротким сторонам соответствующих излучающих полосок, размещены со стороны излучающих источников для каждого из них. Общее средство коллимирования излучения ...

СПОСОБ ИЗМЕНЕНИЯ ДИАМЕТРА ПЕРЕТЯЖКИ ВЫХОДНОГО ЛАЗЕРНОГО ПУЧКА НА ФИКСИРОВАННОМ РАССТОЯНИИ ОТ ЛАЗЕРА

Изобретение относится к лазерной технике. Способ изменения диаметра перетяжки выходного лазерного пучка на фиксированном расстоянии от лазера реализуется устройством, включающим лазер, излучающий пучок с диаметром перетяжки 2hи параметром конфокальности z, двухкомпонентную оптическую систему, формирующую в исходном положении компонентов выходную перетяжку диаметромна расстоянии Lот лазера, каждый компонент оптической системы имеет возможность перемещения вдоль оптической оси. Согласованное перемещение компонентов осуществляют вдоль оптической оси по закону s(s)=a·y(s)-Δ+s, где sи s- перемещения первого и второго компонентов оптической системы;; Δ- расстояние между задним фокусомпервого компонента и передним фокусом Fвторого компонента в исходном положении. Параметр у определяют из решения кубического уравнениягдеz- положение перетяжки входного пучка относительно переднего фокуса Fпервого компонента в исходном положении;- положение выходной перетяжки относительно заднего фокусавторого компонента ...

ОПТИЧЕСКИЙ МЕХАНИЗМ И ПРОЕКТОР ИЗОБРАЖЕНИЙ С ОПТИЧЕСКИМ МЕХАНИЗМОМ

... 1. Оптический механизм, содержащий осветительный модуль, включающий в себя источник света для формирования света в направлении предварительно заданной оси света, конический стержень, первый конец которого расположен вблизи источника света, причем конический стержень имеет множество узких длинных поверхностей вдоль протянутого направления оси света, поверхность перпендикулярного поперечного сечения конического стержня и ось света образуют многоугольник, каждая узкая длинная поверхность имеет два соответствующих длинных края, простирающихся, в основном, вдоль направления оси света, и два соответствующих коротких края, в основном перпендикулярных оси света, длина узких длинных поверхностей вблизи короткого края источника света меньше по сравнению с коротким краем источника света, так что поверхность поперечного сечения конического стержня постепенно увеличивается в направлении удаления от источника света, и отражающее средство, реализованное на узких длинных поверхностях, для отражения света ...

Устройство для формирования лазерного излучения

Устройство формирования пучка лазерного излучения с сечением прямоугольной формы и равномерным распределением интенсивности

Изобретение относится к оптическим устройствам. Устройство формирования пучка лазерного излучения с сечением прямоугольной формы и равномерным распределением интенсивности содержит излучатель, оптическую систему формирования излучения, два фокусирующих призменных растра с нечетным числом граней и скрещенных под углом 90°. За оптической системой устройство выполнено в виде двух цилиндрических систем, установленных друг за другом, скрещенных под углом 90° с совмещенной плоскостью изображений. В каждой цилиндрической системе установлен фокусирующий призменный растр с приводом продольного перемещения, за которым установлена система преобразования с регулируемыми фокусным расстоянием и оптическим увеличением, равным отношению заданных размеров сечения пучка лазерного излучения прямоугольной формы к ширине грани фокусирующего призменного растра. При этом ее передняя фокальная плоскость совмещена с задней фокальной плоскостью фокусирующего призменного растра, а фокусное расстояние равно отношению ...

Регистратор оптического излучения

LICHTAUSGLEICHSEINRICHTUNG

Vorrichtung zur Homogenisierung von Laserstrahlung sowie Verfahren zu ihrer Herstellung

Vorrichtung zur Homogenisierung von Laserstrahlung in einem Beleuchtungsfeld umfassend: ein erstes Substrat (S1), durch das die Laserstrahlung (LR) von einer Eintrittsseite in Richtung des Beleuchtungsfeldes (ILR) hindurchtreten kann, wobei das erste Substrat eine erste optisch funktionale Substratoberfläche (S1-1) aufweist, an der mehrere konvexe Zylinderlinsenflächen mit zueinander parallelen Zylinderachsen nebeneinander liegend ausgebildet sind, wobei unmittelbar benachbart zueinander liegende konvexe Zylinderlinsenflächen jeweils in einem Übergangsbereich (TR) ineinander übergehen, dadurch gekennzeichnet, dass die Übergangsbereiche (TR) derart ausgelegt sind, dass ein durch die Übergangsbereiche erzeugter Anteil von Beleuchtungsintensität in dem Beleuchtungsfeld (ILF) im Vergleich zu einem durch die konvexen Zylinderlinsenflächen erzeugten Anteil von Beleuchtungsintensität im Beleuchtungsfeld gering ist und eine örtliche Verteilung dieses Anteils im Beleuchtungsfeld im Wesentlichen ...

Optical device for geometric shaping of light beam profile e.g. for coupling laser radiation emitted by laser diode with input end of optical fibre

The optical device (10) has 2 successive lenses, used for increasing or reducing the beam profile of the light beam by respective factors in 2 directions perpendicular to the light propagation direction. A deflection mirror is positioned in the light beam path between the lenses for deflecting the light beam through an angle, the first lens and the deflection mirror mounted on a common transparent carrier through which the light beam passes to the second lens (20). An Independent claim for a method for manufacturing an optical device for geometric shaping of a light beam profile is also included.

Anpassung der Fokuslage

Ein Verfahren zur Anpassung der Fokuslage in einer laserbasierten Werkzeugmaschine (11) für den Ausgleich einer laserleistungsabhängigen Fokuslagenverschiebung (Δf) in einem Strahlführungssystem (15) weist die folgenden Schritte auf: Bereitstellen einer vom Strahlführungssystem (15) abhängigen Kenngröße (TLK, D*) einer Fokuslagenverschiebung (Δf), Bereitstellen eines einzustellenden Laserleistungswertes (P), Bestimmen (31) einer vorzunehmenden Fokuslagenänderung (Δz) mit der vom Strahlführungssystem (15) abhängigen Kenngröße (TLK, D*) für den einzustellenden Laserleistungswertes (P) zum Ausgleich der laserleistungsabhängigen Fokuslagenverschiebung (Δf) und Einstellen (35) einer korrigierten Fokuslage (zkorr) unter Berücksichtigung der bestimmten Fokuslagenänderung (Δz).

Lichtaussendevorrichtung und Verfahren zum Aussenden von Licht

Die Erfindung betrifft eine Lichtaussendevorrichtung (la), mit: einer Phased-Array-Antenne (2), welche dazu ausgebildet ist, einen Lichtstrahl (L) auszusenden; einer optischen Einrichtung (3), mit mindestens einem ersten optischen Element (31) und mindestens einem zweiten optischen Element (32), welche im Strahlengang des ausgesendeten Lichtstrahls (L) angeordnet sind, wobei das mindestens eine erste optische Element (31) und das mindestens eine zweite optische Element (32) eine gemeinsame Brennebene (B) aufweisen, wobei der Lichtstrahl (L) mittels des mindestens einen ersten optischen Elements (31) in die Brennebene (B) fokussiert und nach dem Durchgang durch das mindestens eine zweite optische Element (32) als Ausgangsstrahl (M) ausgesendet wird; und einer Blendeneinrichtung (4), welche im Bereich der Brennebene (B) im Strahlengang angeordnet ist, wobei die Blendeneinrichtung (4) mindestens eine Blendenöffnung (40) aufweist, und wobei eine Position der mindestens einen Blendenöffnung ...

Anordnung zur Kohärenzreduktion und Strahlformung eines Laserstrahls

Fokussiervorrichtung und Verfahren zum Fokussieren einer Objektivlinse

Es werden eine Fokussiervorrichtung und ein Verfahren zum Fokussieren einer Objektivlinse zur Linienbeleuchtung eines Objektes mittels eines Laserstrahls angegeben, mit einem Grundkörper (12), an dem eine Linsenhalterung (14) zur Aufnahme der Objektivlinse (16) verfahrbar aufgenommen ist, wobei zwei Antriebe (18, 20) mit mindestens einer Linearführung (22, 24, 26) zum Verfahren der Linsenhalterung (14) vorgesehen sind, und wobei mindestens ein Wegmesssystem (28, 30) vorgesehen ist.

Verfahren zur Realisierung eines ebenen, uniformen Bildes einer Laserdioden-Anordnung.

Strahlungsemittierende Vorrichtung und Verwendung einer derartigen Vorrichtung

Beleuchtungsvorrichtung

Optische Anordnung und Anzeigegerät

Optisches System für Laserlicht-Formung und Wellenfront-Steuerung

Ein optisches System 1 für Laserlicht-Formung und Wellenfront-Steuerung gemäß einer Ausführungsform der vorliegenden Erfindung umfasst eine Intensitätsumwandlungs-Linse 11, mit der eine Intensitätsverteilung von Laserlicht, das darauf auftrifft, zusammengeführt und zu einer gewünschten Intensitätsverteilung geformt wird; einen Lichtmodulator 12, mit dem das von der Intensitätsumwandlungs-Linse 11 emittierte Laserlicht so moduliert wird, dass Wellenfront-Steuerung durchgeführt wird; und ein optisches Aufweitungs-/Verengungs-System 20, das zwischen der Intensitätsumwandlungs-Linse 11 und dem Lichtmodulator 12 angeordnet ist, um das von der Intensitätsumwandlungs-Linse 11 emittierte Laserlicht aufzuweiten oder zu verengen.

Beleuchtungsvorrichtung und Bildprojektionsgerät mit dieser Vorrichtung

LASERSTRAHLANPASSUNGSSYSTEM UND LASERBEARBEITUNGSVORRICHTUNG

Ein Laserstrahlanpassungssystem zum Anpassen eines Laserstrahls zu parallelem Licht. Das System beinhaltet eine Strahlanpassungseinheit, die mehrere Linsen aufweist, die in einem optischen Pfad des Laserstrahls angeordnet sind und einen ersten und zweiten Spiegel, der den Laserstrahl reflektiert, der durch die Strahlanpassungseinheit gelaufen ist, erste und zweite Kameras, die dazu ausgestaltet sind, Bilder eines ersten Lichts, das durch den ersten Spiegel gelaufen ist, und eines zweiten Lichts, das durch den zweiten Spiegel gelaufen ist, aufzunehmen, Berechnungsabschnitte, die dazu ausgestaltet sind, erste und zweite Strahldurchmesser des ersten Lichts und des zweiten Lichts aus den Bildern, die durch die erste und zweite Kamera aufgenommen wurden, zu berechnen und einen Linsenanpassungsabschnitt, der dazu ausgestaltet ist, eine der Linsen der Strahlanpassungseinheit in einer Richtung parallel zu dem optischen Pfad des Laserstrahls zu bewegen, sodass die ersten und zweiten Strahldurchmesser ...

Herstellungsverfahren für einen Hohlmischstab und Hohlmischstab

Bei einem Herstellungsverfahren für einen Hohlmischstab (1), der einem Hohlraum (6) mit viereckigem Querschnitt aufweist, werden folgende Schritte ausgeführt: DOLLAR A Fertigen eines ersten und eines zweiten Seitenteiles (2, 3), das jeweils einen T-förmigen Querschnitt mit einem Quersteg (9) und einem davon vorspringenden Mittelsteg (10) aufweist, der eine dem Quersteg (9) abgewandte, reflektierende Endfläche (15) und im Querschnitt gesehen eine erste und eine zweite von der Endfläche (15) zum Quersteg (9) verlaufende Seitenfläche (11, 12) umfaßt, wobei zumindest beim ersten Seitenteil (2) die Endfläche (15) und die erste Seitenfläche (11) im Querschnitt gesehen unter einem Winkel (alpha) zusammenlaufen, der ungleich 90 DEG ist, DOLLAR A Fertigen eines dritten und vierten Seitenteiles (4, 5) mit jeweils einer reflektierenden, ebenen Innenseite (16), DOLLAR A Zusammensetzen der vier Seitenteile (2, 3, 4, 5), derart, daß die Endflächen (15) des ersten und zweiten Seitenteiles (2, 3) einander ...

Vorrichtung zur Formung eines Lichtstrahls

Vorrichtung zur Formung eines Lichtstrahls, umfassend mindestens zwei optisch funktionale Grenzflächen (24, 25, 26, 27), die in Ausbreitungsrichtung (z) des zu formenden Lichtstrahles (21) hintereinander angeordnet sind, so dass der Lichtstrahl (21) durch die mindestens zwei optisch funktionalen Grenzflächen (24, 25, 26, 27) nacheinander hindurchtreten kann; zwei Gruppen von refraktiven Abbildungselementen, die auf mindestens einer der optisch funktionalen Grenzflächen (24, 25, 26, 27) angeordnet sind, wobei die refraktiven Abbildungselemente als Zylinderlinsen (30, 30', 31, 32, 33) ausgebildet sind, wobei die erste der beiden Gruppen konvexe Zylinderlinsen (30, 30', 31) umfasst und die zweite der beiden Gruppen konkave Zylinderlinsen (32, 33) umfasst; dadurch gekennzeichnet, dass innerhalb mindestens einer der Gruppen mindestens zwei der Zylinderlinsen (30, 30', 31, 32, 33) unterschiedliche Eigenschaften aufweisen, wobei zwei Arten von konvexen Zylinderlinsen vorgesehen sind, die eine ...

Laser device for generating laser beam with determined radiation profile, has laser and fiber optics which is coupled to laser and two installation elements are arranged at distance to each other at sides of fiber optics

The laser unit has a laser (1) and a fiber optics (4) which is coupled to the laser. The two installation elements (5a,5b) are arranged at a distance to each other at the sides of the fiber optics. A regulating element is coupled with an electrical measuring signal outlet with a distance measurement device or a component of a distance measurement device is automatically coupled with electrical measuring signal outlet.

BEUGUNGSOPTIK MIT ZUSAMMENGESETZTER APERTUR UND VERÄNDERLICHER BRENNWEITE UND LASERSCHNEIDEVORRICHTUNG MIT DIESER OPTIK

Verwendung eines Scheibenlasers zur Kristallisation von Siliziumschichten

Verfahren und Vorrichtung zur Formung von Strahlung für die Laserbearbeitung

Die Erfindung betrifft ein Verfahren und eine Laseranordnung zur Materialbearbeitung, wobei in einer Laseranordnung ein Laserstrahl auf eine Bearbeitungs-/ Abbildungsebene fokussiert und der Laserstrahl mittels mindestens eines Strahlformers hinsichtlich seiner Intensitätsverteilung angepasst werden kann. Dabei ist vorgesehen, dass der Laserstrahl zur Vermeidung von Uniformitätsfehlern in der Bearbeitungs-/ Abbildungsebene mittels mindestens eines Strahlteilers in mindestens zwei Teil- oder Einzelstrahlen aufgeteilt wird und die Teil- oder Einzelstrahlen derart unterschiedlich beeinflusst werden oder jeder Teil- oder Einzelstrahl aus einer Laserquelle mit unterschiedlicher Wellenlänge gebildet wird, dass diese nach deren Zusammenführung und Fokussierung auf die Bearbeitungs-/ Abbildungsebene einen Ausgangsstrahl mit einem Intensitätsprofil bilden, wobei benachbarte Intensitätsmaxima des Intensitätsprofils sich in ihren Lichteigenschaften unterscheiden. Damit kann eine störende Interferenzbildung ...

Verfahren und Vorrichtung zur Formung von Strahlung für die Laserbearbeitung

Verfahren zur Strahlformung bei einem Laserbearbeitungsprozess, bei dem in einer Laseranordnung (20) ein Laserstrahl (22) auf eine Bearbeitungs- / Abbildungsebene (29) fokussiert und der Laserstrahl (22) mittels mindestens eines Strahlformers (26, 30) hinsichtlich seiner Intensitätsverteilung angepasst werden kann, wobei der Laserstrahl (22) zur Vermeidung von Uniformitätsfehlern in der Bearbeitungs-/ Abbildungsebene (29) mittels mindestens eines Strahlteilers (23) in mindestens zwei Teil- oder Einzelstrahlen (24, 25, 35) aufgeteilt wird und die Teil- oder Einzelstrahlen derart unterschiedlich beeinflusst werden oder jeder Teil- oder Einzelstrahl aus einer Laserquelle (21) mit unterschiedlicher Wellenlänge gebildet wird, dass diese nach deren Zusammenführung und Fokussierung auf die Bearbeitungs-/ Abbildungsebene (29) einen Ausgangsstrahl (28) mit einem Intensitätsprofil (28.1) bilden, wobei benachbarte Intensitätsmaxima des Intensitätsprofils (28.1) sich in zumindest einer Lichteigenschaft ...

OPTISCHE ANORDNUNG ZUR SYMMETRIERUNG DER STRAHLUNG EINES ODER MEHRERER ÜBEREINANDER ANGEORDNETER HOCHLEISTUNGSDIODENLASER

LIDAR-Vorrichtung

Es wird eine LIDAR-Vorrichtung mit einem Emitter zur Emission eines Laserlichts in einen Emissionspfad und mit einem Detektor zur Detektion eines reflektierten Laserlichts in einem Detektionspfad beschrieben. Dabei ist in dem Emissionspfad mindestens ein erstes Axicon zur Erzeugung eines ringförmigen Laserlichtprofils (4) aus dem emittierten Laserlicht angeordnet.

Fahrerüberwachungskamerasystem

Fahrerüberwachungskamerasystem (200) für ein Fahrzeug (100), wobei das Fahrerüberwachungskamerasystem (200) umfasst:ein Kamerasystem (202), das eine Austrittssichtfeld-Mittelachse (208) umfasst, die in Bezug auf einen Satz einer x-, einer y- und einer z-Achse, die orthogonal sind, stärker vertikal als horizontal orientiert ist, wobei die z-Achse eine Richtungslinie definiert, die eine vertikale Richtung angibt, wobei die x- und die y-Achse Richtungslinien definieren, die horizontale Richtungen angeben, wobei das Kamerasystem (202) eine Kamera (204) umfasst; undeinen optischen Strahlformer (300), der in optischer Kommunikation mit dem Kamerasystem (202) und optisch zwischen dem Kamerasystem (202) und einem Betreiber (108) des Fahrzeugs (100) angeordnet ist, wobei der optische Strahlformer (300) strukturell dafür konfiguriert ist, ein Bild eines Gesichts eines Betreibers (108) des Fahrzeugs (100) in Richtung des Austrittssichtfelds (206) des Kamerasystems (202) zu lenken, wobei der optische ...

Beleuchtungssystem für die EUV-Belichtungslithographie

Ein Beleuchtungssystem für die EUV-Projektionslithographie hat eine Strahlformungsoptik (6) zur Erzeugung eines EUV-Sammel-Ausgabestrahls (7) aus einem EUV-Rohstrahl (4) einer synchrotron-strahlungsbasierten Lichtquelle (2). Eine Auskoppeloptik (8) dient zur Erzeugung mehrerer EUV-Einzel-Ausgabestrahlen (9i) aus dem EUV-Sammel-Ausgabestrahl (7). Jeweils eine Strahlführungsoptik (10) dient zur Führung des jeweiligen EUV-Einzel-Ausgabestrahls (9i) hin zu einem Objektfeld (11), in dem eine Lithographiemaske (12) anordenbar ist. Es resultiert ein Beleuchtungssystem mit einer möglichst verlustfreien und gleichzeitig flexiblen Führung von EUV-Licht einer synchrotronstrahlungsbasierten Lichtquelle.

Optische Anordnung zur Verwendung bei einer Laserdiodenanordnung sowie Laserdiodenanordnung mit einer solchen optischen Anordnung

Die Erfindung bezieht sich auf eine neuartige optische Anordnung zur Verwendung bei einer Laderdiodenanordnung sowie Laserdiodenanordnung mit einer solchen optischen Anordnung.

Laserbeleuchtungsvorrichtung zum Beleuchten eines streifen- oder linienförmigen Bereichs

Eine Laserbeleuchtungsvorrichtung, die einen linien- oder streifenförmigen Bereich (S) von Blattgut (B) mit hoher Strahlungsleistung beleuchtet, enthält einen Diodenlaser (2), dessen Ausgang zwei orthogonal zueinander orientierte Stablinsen (4, 6) nachgeordnet sind, deren Brennweite im Vergleich zu ihrem Abstand gering ist. Zwischen den beiden Stablinsen (4, 6) wird ein Laserlichtstrahlfächer (L2) gebildet. Dieser wird von der zweiten Stablinse (6) auf einen schmalen linienförmigen Bereich (S) fokussiert. Hinter diesem Bereich divergieren die Laserstrahlen unter großem Winkel (alpha), so daß die Leistungsdichte entsprechend rasch abnimmt. Falls das Licht auf die Netzhaut eines Auges eines Beobachters fällt, wird das Laserlicht nicht punktförmig, sondern nur linienförmig fokussiert, was durch die entsprechend geringe Leistungsdichte eine Verletzung des Auges ausschließt.

Vorrichtung und Verfahren zur Aufnahme eines projizierten Punktmusters in einer Anzeigevorrichtung

Eine Vorrichtung umfasst eine Mehrzahl von gegeneinander geneigten abbildenden optischen Kanälen, von denen jeder eine Optik und zumindest eine Detektorpixelanordnung umfasst. Die Mehrzahl von optischen Kanälen sind ausgebildet, um durch Abbildung eines Gesichtsfeldes ein Bild eines Punktmusters von dem Gesichtsfeld zu erhalten. Die Vorrichtung umfasst eine Anzeigeeinrichtung, die eine Vielzahl von in einer Anzeige-Ebene angeordnete Anzeige-Pixel aufweist, die ausgebildet sind, um eine graphische Information anzuzeigen. Die optischen Kanäle verlaufen durch die Anzeige-Ebene und sind für die Abbildung des Gesichtsfeldes zwischen den Anzeige-Pixeln hindurch eingerichtet. Die Vorrichtung umfasst eine Auswerteeinrichtung, die mit Detektorpixeln der Detektorpixelanordnung gekoppelt ist und ausgebildet ist, um das Punktmuster basierend auf einem eine Hyperauflösung bewirkenden Vergleich von Signalstärken unterschiedlicher Detektorpixel auszuwerten, um ein Auswerteergebnis zu erhalten, und um ...

Anordnung zur Führung und Formung von Strahlen eines geradlinigen Laserdiodenarrays

An arrangement in which a reflection lens system shapes and guides beams from a rectilinear laser diode array with beam outlet surfaces lying in a common plane is known. In order to map the beams from the individual laser diodes to form a substantially uniform radiation field or a radiation field pattern using such an arrangement, at least one first reflection component having a reflection surface is associated with each beam in order to bring together the individual outlet beams. The reflection surfaces are disposed in mutually offset planes, the offset corresponding sequentially to the sequence of the laser diodes in the array.

Einrichtung zur Strahlbeeinflussung bei der Werkstückbearbeitung mit einem Hochenergielaserstrahl

Oberflächenmodifikationsverfahren und- vorrichtung

Verfahren zur räumlich periodischen Modifikation einer Oberfläche eines Substrates in einer Probenebene (P), wobei die Substratoberfläche mit einem der einzubringenden Struktur entsprechenden Beleuchtungsmuster einer Energiedichte oberhalb einer Prozessschwelle der Substratoberfläche bestrahlt wird, dadurch gekennzeichnet, dass das Beleuchtungsmuster mittels Beugung eines konvergierenden Eingangsstrahls (10) und Überlagerung resultierender, gebeugter Teilstrahlen (122) in einem Gitter-Interferometer erzeugt wird, wobei vor dem Gitter-Interferometer angeordnete Strahlformungsmittel (40; 40') den Eingangsstrahl (10) derart konvergieren lassen, dass wenigstens eine Komponente seiner gebeugten Teilstrahlen in der Nachbarschaft der Probenebene (P) eine Strahltaille aufweist.

Verfahren und Vorrichtung zum simultanen Laserschweißen

Verfahren zum simultanen Laserschweißen von mindestens zwei Werkstücken entlang mindestens einer gemeinsamen Schweißnaht, wobei mittels einer Laservorrichtung (1) eine erste Intensitätsverteilung von Laserlicht in einer zur Ausbreitungsrichtung des Laserlichts im Wesentlichen senkrechten Ebene erzeugt wird, wobei die erste Intensitätsverteilung innerhalb eines mit einer Eintrittsapertur (23) versehenen Strahlformungsmittels (2) in eine zweite Intensitätsverteilung konvertiert wird, die an eine Kontur der Schweißnaht angepasst ist, dadurch gekennzeichnet, dass das Laserlicht zumindest teilweise in Bereiche der Schweißnaht abgebildet wird, die von der Eintrittsapertur (23) des Strahlformungsmittels (2) derart beabstandet sind, dass eine dreidimensionale Schweißnahtkontur erzeugt wird.

Divergent, optical, gaussian, elliptical radiation converting device, e.g for tunnelling guide

A device is disclosed for transforming a divergent radiation beam with an elliptically symmetrical gaussian intensity distribution in its cross-section, in which intensities decrease outwards from the beam axis, into a radiation beam with a rotationally symmetrical gaussian intensity distribution in its cross-section, in which the intensities decrease outwards. Mirror symmetrical filters with a space-dependent gaussian transmission curve are used for that purpose. The centre of a radiation beam that falls on a surface may thus be quickly and unambiguously determined for measurement purposes, even in the presence of diffused light. In addition, the high temperature and vibration stability of the device allow it to be used without problems in the field.

Fahrzeug-Scheinwerfer

Kraftfahrzeugscheinwerfer umfassend – eine Lichtquelle (12), – einen Reflektor (10), – eine Linse (18), sowie – ein Trägerelement (30), an dem die Linse (18) befestigt ist, wobei vom Reflektor (10) reflektiertes Licht durch die Linse (18) hindurchtritt, und wobei ein die Linse (18) zumindest teilweise umgebender Abschnitt (31) aus einem lichtdurchlässigen Material vorgesehen ist, dadurch gekennzeichnet, dass der Scheinwerfer ein Gehäuse (14) aufweist, das in Lichtaustrittsrichtung eine Lichtaustrittsöffnung aufweist, die mit einer lichtdurchlässigen Scheibe (15) abgedeckt ist, wobei in dem Gehäuse (14) eine Einheit umfassend die Lichtquelle (12), den Reflektor (10), die Linse (18) und das Trägerelement (30) verstellbar angeordnet ist und wobei der Abschnitt (31) an einer zum Reflektor (10) weisenden inneren Oberfläche zumindest bereichsweise mattiert oder mit einer Beschichtung (44) versehen ist.

Verfahren und Anordnung zur Fokussierung elektromagnetischer Strahlung unterhalb der Beugungsgrenze

Zur Fokussierung elektromagnetischer Strahlung unterhalb der Beugungsgrenze, wodurch die physikalische Grenze für den kleinsten Bündeldurchmesser bei der Fokussierung elektromagnetischer Strahlung überwunden und eine höhere Intensität auf einer kleineren Fläche realisiert werden kann, wird ein Verfahren angegeben, mindestens umfassend die Verfahrensschritte Fokussieren eines von einer Quelle einfallenden elektromagnetischen Strahlenbündels mit üblichen Mitteln, Erzeugung evaneszenter Wellenfelder der zu fokussierenden elektromagnetischen Strahlung als Seedfelder und Verstärkung dieser Seedevaneszenzfelder in unmittelbarer räumlicher Nähe ihrer Erzeugung, wobei die Phasen der verstärkten Evaneszenzwellen einander angepasst sind.

Optik zur Profilformung von Strahlung

Optik zur Profilformung von Strahlung, welche eine Mikrolinsenkombination verwendet, deren vieleckige Mikrolinsen auf einer Fläche angeordnet sind, wobei die geometrische Anordnung der Einzellinsen und ihre Durchmesser einem Verteilungsgesetz folgen, dadurch gekennzeichnet, daß die Anzahl der Ecken sowie die Längen der Linsenrandstücke jeder der Einzellinsen der Mikrolinsenkombination durch eine Punkte-Verteilung (P) bestimmt ist und jede dieser Einzellinsen einen dieser Punkte (p) als Voronoi-Punkt (2) hat, somit eine Voronoi-Region (VR(p)) definiert ist und in dieser Region mit der Gleichungeine Voronoi-Linse (1) definiert ist, wobei z(r) eine Linsengleichung ist und z die Tiefe bezogen auf den Scheitelpunkt 0≤ z ≤ z(dmax), r der Abstand zwischen dem Scheitelpunkt einer Voronoi-Linse und einem Punkt p dieser Linse 0 ≤ r≤ dmax, c = 1/R mit R als Krümmungsradius der Voronoi-Linse, k die konische Konstante und a4, a6, ... die asphärischen Koeffizienten sind.

Lichterzeugende Anordnung

Die Erfindung bezieht sich auf eine lichterzeugende Anordnung mit einem lichtemittierenden Halbleiterelement, das elektrische Zuleitungen besitzt, sowie mit einem mit einem Abstand in Abstrahlrichtung vor dem Halbleiterelement angeordneten transparenten Lichtausrichtelement 2, durch das das von dem Halbleiterelement emittierte Licht zu einem Lichtstrom bündelbar ist. Die Auskoppelfläche 4 des Lichtausrichtelements 2 weist eine Mikrostruktur 6 auf, die aus einer Vielzahl Erhebungen und Vertiefungen gebildet ist, durch die die Strahlweg des Lichtstroms um einen Winkel < 5 DEG ablenkbar sind.

Lichtleiter, Parallaxesperre und dreidimensionale Bildanzeigevorrichtung sowie Verfahren zur Bilderzeugung unter Verwendung derselben

Lichtleiter mit: einem transparenten Substrat (12) mit einer Eintrittsfläche und einer Transmissionsfläche; mehreren Führungselementen mit jeweils einer an der Eintrittsfläche des transparenten Substrats (12) ausgebildeten Führungsbasis, wobei die Führungsbasen durch einen offenen Bereich der Eintrittsfläche des transparenten Substrats (12) mit der Breite a voneinander getrennt sind und wobei jede Führungsbasis mit einem Bereich auf der Eintrittsfläche des transparenten Substrats (12) mit der Breite b überlappt; wobei einander zugewandte Seiten benachbarter Führungen (11) einen stumpfen Winkel zur Eintrittsfläche des transparenten Substrats bilden; wobei das Verhältnis b geteilt durch a gleich N ist, wobei N eine ganze Zahl größer als 2 ist; und wobei sowohl die Eintrittsfläche als auch die Transmissionsfläche des transparenten Substrats (12) eben ist.

Laser arrangement for treatment of workpiece, has multiple laser beam sources operated together independently and beam forming device is provided downstream to laser beam source for geometric overlapping of laser beams

The laser arrangement has multiple laser beam sources (1a-1d) operated together independently. A beam forming device (2) is provided downstream to the laser beam source for geometric overlapping of laser beams (Lsa-LSd) emitted from the laser beam sources and for generating a homogeneous outgoing laser beam (LSout) with constant beam intensity above its beam cross section in a direction transverse to the optical axis.

EXCIMER LASER BEAM MONOGENIZER SYSTEM

OPTICAL BEAM EXPANDERS

ATHERMALISED OPTICAL BEAM EXPANDER

Apparatus and method for making a laser beam uniform by multi-dimensional bending of optic fibers

Light emitting device

A light emitting device 10 comprises a plurality of spaced energisable light sources A,B,C and a main Holographic Optical Element (HOE) or a Diffractive Optical Element (DOE) 12. Light beams emitted from the light sources A, B, C are incident on and directed by the HOE or DOE 12, so that a light beam 14 output from the HOE or DOE is a uniform or substantially uniform mixture of the incident light beams. The HOE or DOE could be replaced by a main optical element which does not cause refraction and/or reflection of the incident light beams.

Beam homogenization in laser scanning microscopy

To provide an illumination beam (5) which is essentially linear in cross section for a laser scanning microscope, an illumination device is employed which provides a source beam which is essentially rotationally symmetrical in cross section. The beam impinges upon a conversion unit which then emits the desired illumination beam (5) and comprises for this purpose an aspherical, convex mirror (1) which is more sharply curved in the region of the point of incidence of the source beam (3) than in regions remote from the point of incidence. An illumination beam with a more uniform intensity distribution results.

Mass spectrometer

Image projector and optical engine

An optical engine for an image projector comprises at least some of the following: a light source, a taper rod 112, at least one light condenser, a prism module, a Digital Micromirror Device (DMD) and a projection lens set. Light generated by the light source is guided by the taper rod following a light path. The taper rod 112 has an increasing size of parallelagram cross-section along the light path, so as to decrease the dispersion angle of light, make the light more uniform, and increase the brightness of light. The prism module described in some embodiments includes a first prism 142 having a right triangle cross-section and a second prism 141 having a wedge cross-section. The prism module receives the light from the condenser, passes the light toward the DMD, receives the light reflected by the DMD, and then passes the reflected light toward the projection lens set. Many variations are disclosed, some making use of light emitting diodes as the light source and components having reversed ...

Detecting measuring and controlling particles and electromagnetic radiation

Device and method for the homogenisation of optical communication signals

The invention provides a method and apparatus for providing a uniform output from an optical transmitter. The invention comprises at least one discrete light source (30), and a housing (38) defining an internally reflecting volume (42) for light from the at least one light source, the housing having a light exit aperture (46) for light from the at least one light source. The reflecting volume is adapted to produce in an extended image surface multiple reflected images (50) of the at least one light source, and the light exit aperture is arranged to emit light from the multiple reflected images. An output lens (48) is employed in front of the light exit aperture for controlling the angular distribution of the light emitted from the at least one light source and the multiple reflected images by way of the light exit aperture.

OPTICAL INFORMATION PROCESSOR

Ignition of a target

Laser apparatus and method having plural excitation sources with associated beam splitting arrangements for adaptive control

A laser 100, and method of operating a laser, including: at least two independently controllable excitation sources 110, 120, preferably laser diodes, that produce input beams for pumping the gain medium 102, preferably a crystalline gain medium such as a Thulium-doped Yttrium Lithium Fluoride slab; beam splitters 132, 134, preferably a polarising beam splitter, for splitting the input beams into sub-beams; and, beam guiding arrangements 136, 138, 140, 142, preferably mirrors, for guiding the sub-beams from the excitation source, such that the sub-beams from each input beam are directed inwardly towards opposite ends of the gain medium. Each excitation source may be aligned with, and directed towards, an end of the gain medium. Preferably, one of the sub-beams is not re-directed and is already aligned with an end of the gain medium. The sub-beams from an excitation source may be parallel with each other when directed inwardly to the gain medium, with the sub-beams from one excitation source ...

Monolithic biconvex fast axis collimator array

A micro optical element 100 for use with an edge-emitting laser diode bar stack, has biconvex fast-axis collimators formed as a monolithic array of inlet lenses 222 on a first surface 118 and an array of outlet lenses 122 on a second opposite surface. The lenses form biconvex collimators acting along the fast axis. A method of manufacturing the micro-optical element 100 for use with a laser diode bar stack using a wavelength stabilized CO2 laser is also described.

Field mapper

An optical system 10 converts a light beam having a known spatially coherent first optical field 14, such as a Gaussian field, to a second optical field 22 with a required intensity distribution and flat wavefront at a desired distance from the system. It does this by creating an intermediate optical field 30, between the first and second optical fields. The intermediate optical field is derived from the inverse Fourier transform of the second optical field. The optical system provides a field mapper. The system includes one or more transmissive refractive optical elements such as a phase plate, arranged to provide a first optical section 25 and a second optical section 26. A focussing lens (figure 2, 132) may be used to provide the required beam at focal plane 24.

Coupling system for output light of semiconductor laser

A coupling system for the output light of a semiconductor laser, characterized in that an end portion of an optical fiber is made as a focusing lens to be coupled with the output light from an active layer of the semiconductor laser is formed so that, at least in a plane parallel to the optical axis of the output light and perpendicular to the junction plane of the semiconductor laser, the width of the end portion continuously decreases towards its tip to provide a required curvature at the tip and that the distribution of light of the semiconductor laser and that of the optical fiber and the focusing lens are matched with each other in the plane perpendicular to the junction plane of the semiconductor laser. The end portion of the optical fiber defining the focusing lens may be formed to have a fixed width in a plane parallel to the junction plane of the semiconductor laser. The end portion of the optical fiber or focusing lens may be formed so that it has a required curvature in a plane ...

Apparatus for reducing the size of a collimated beam of radiant energy

... 1,129,862. Optical systems. S. H. HINE. Jan. 25, 1966, No. 3280/66. Heading G2J. In apparatus for reducing the cross-sectional area of a collimated light beam 60, Fig. 1, to produce a high intensity collimated beam 70, without having a high intensity beam on one small reflector surface (46), or (56), Fig.4 (not shown) as occurs in conventional spherical reflective optics, the cross-section is reduced in one dimension, but still maintaining the beam collimated, as shown by beam 66 of elliptical cross-section, by means of a pair of mirrors 12, 14, and is then reduced in another dimension, as shown at right angles thereto, so as to produce a beam 70 of circular cross-section, by means of a second pair of mirrors 16, 18. The mirror 12 is part-cylindrical concave towards mirror 14 and tends to focus beam 60 on to a line 64. The part-cylindrical mirror 14 which is convex towards mirror 12 and has its axis parallel to that of mirror 12 is so arranged that the collimated beam 66 emerges therefrom ...

APPARATUS INCLUDING A LASER

ARRANGEMENT FOR EXTENDING PHOTOSENSOR ARRAY RESOLUTION

ENERGY TRANSMISSION SYSTEM ADAPTED TO COMPENSATE FOR PHASE DISTORTION IN A PROPOGATION PATH TO A TARGET

IMAGE FORMING OPTICAL SYSTEM USING A SEMICONDUCTOR LASER

PROCESS FOR FILTERING AND AMPLIFYING LASER BEAMS

... 1465526 Modifying laser beams QUANTEL SA 6 Feb 1974 [8 Feb 1973 (2)] 05481/74 Heading G2J In the process of amplifying a laser beam, and in which process irregularities in intensity of the cross-section of the beam can cause damage to the amplifier, the beam is first passed through a fluid filtering medium that has non-linear properties such as to remove such irregularities. Media disclosed are carbon disulphide, chloronaphthaline, nitrobenzene, acetone and benzene.

RADIATION FIGURATION OPTICS AND MODULE FOR A DIODE LASER ARRANGEMENT

LASER INDICATOR

DEVICE FOR THE APPLICATION OF OPTICAL GRADIENT FORCES

RADIATION FIGURATION DEVICE, ARRANGEMENT FOR LINKING A RAY OF LIGHT INTO AN OPTICAL FIBER AS WELL AS RADIATION TURNING UNIT FOR A SUCH RADIATION FIGURATION DEVICE OR A SUCH ARRANGEMENT

OPTICAL RADIATION EXPANDING MANDREL WITH SUBSTRATE LIGHT WAVE LINE

LICHTPROJEKTOR

DESIGN PROCEDURE FOR A DEVICE FOR THE CONCENTRATION OR COLLIMATION OF RADIATION ENERGY

OPTICAL SYSTEM FOR THE TRANSFORMATION OF A PRIMARY DISTRIBUTION OF INTENSITY INTO A GIVING, SOLID ANGLE-DEPENDENT DISTRIBUTION OF INTENSITY

PICTURE VERSION SYSTEM AND ITS USE

LIGHTING LENS FOR AN OPTICAL CODE READER

PROCEDURE FOR THE CONTROLLING OF AN ADJUSTMENT HOLE

PROCEDURE FOR THE PRODUCTION OF AN INJECTOR PLATE OF AN INK JET PRINTER

ILLUSTRATION DEVICE

LASER LIGHTING DEVICE FOR LIGHTING TOUCH OR LINIENFÖRMIGEN RANGE

Pumpeinrichtung zum Pumpen eines verstärkenden Lasermediums

The invention relates to a pump device for pumping an amplifying laser medium (1), comprising a radiation source (13) with a plurality of laser diodes (15, 16) that emit laser beams (17) which have parallel beam axes (a) running in the direction of a z axis and which diverge at least twice as much in the direction of an x axis perpendicular to the z axis as in the direction of a y axis perpendicular to the z axis and to the x axis. The pump device also comprises at least one optical component (22, 22', 22") with at least one cylinder surface (23), with which at least some of the laser beams (17) emitted by the laser diodes (15, 16) interact. The cylinder surface (23) lies parallel to the x axis and is curved on a plane perpendicular to the x axis.

BELEUCHTUNGSVORRICHTUNG MIT VERÄNDERLICHEM ABSTRAHLWINKEL

Die Erfindung betrifft eine Beleuchtungsvorrichtung mit veränderlichem Abstrahlwinkel, Lichtquelle (2) und einen Linsensystem, das zwei Linsen, eine Primärlinse (3) eine Sekundärlinse (4) umfasst. Die beiden Linsen (3,4) die Lichtquelle (2) sind entlang einer optischen Achse (5) angeordnet und der Abstand zwischen der Primärlinse (3) und der Sekundärlinse (4)ist veränderlich um den Abstrahlwinkel des von der Beleuchtungsvorrichtung erzeugten Lichtstrahlkegels zu verändern.Nach einem ersten Aspekt der vorliegenden Erfindung weist die Primärlinse (3) eine numerische Apertur von zumindest 0,7 auf, die Primärlinse (3) ist ein Aplanat, und die Sekundärlinse (4) ist derart ausgebildet, dass sie ein von der Primärlinse (3) erzeugtes virtuelles Bild der Lichtquelle (2) bei bestimmten Abstand der Sekundärlinse von der Primärlinse ins Unendliche abbildet. Nach einem zweiten Aspekt der vorliegenden Erfindung zeigen sich die Beleuchtungsgrößen dadurch aus, dass die Primärlinse (3) numerische Apertur ...

Ausfallsichere Symboldarstellungen mit LED-Lichtquelle und Lichtleiter

Die Erfindung betrifft eine LED-Symbolanzeige mit farbmischender Sammeloptik, insbesondere für sicherheitsrelevante Anwendungen. Die farbmischende Eigenschaft der Lichtquelle wird einerseits dazu verwendet, den Ausfall einer LED völlig zu kaschieren und die verbleibenden LEDs bei Bedarf mit entsprechend mehr Strom zu beaufschlagen, andererseits um Symbole in mehreren Normfarben in einer gemeinsamen Bauform umsetzen zu können. Als Lichtquelle werden High-Power-LEDs (R, G) mit ebenem Lichtaustritt und separater Verschaltung, sowie elektrischer und/oder optischer Überwachung in kompakter Anordnung eingesetzt, deren Licht im Lichtleiterstab (2) ausgemischt und nach der ebenen Austrittsfläche (4) in ein Lichtleiterbündel (6) oder ein lichtaufteilendes Element geleitet wird, dort in einzelne Lichtleiterarme aufgeteilt und über deren Austrittsflächen (8a, 8b ... ) auf einzelne, ein Symbol bildende Sammellinsen (5) gelenkt wird, deren Brennpunkte (F) in den jeweiligen Austrittsflächen liegen. Die ...

OPTICAL MULTIPLEXER

Ausfallsichere Symboldarstellungen mit LED-Lichtquelle und Lichtleiter

Die Erfindung betrifft eine LED-Symbolanzeige mit farbmischender Sammeloptik, insbesondere für sicherheitsrelevante Anwendungen. Die farbmischende Eigenschaft der Lichtquelle wird einerseits dazu verwendet, den Ausfall einer LED völlig zu kaschieren und die verbleibenden LEDs bei Bedarf mit entsprechend mehr Strom zu beaufschlagen, andererseits um Symbole in mehreren Normfarben in einer gemeinsamen Bauform umsetzen zu können. Als Lichtquelle werden High-Power-LEDs (R, G) mit ebenem Lichtaustritt und separater Verschaltung, sowie elektrischer und/oder optischer Überwachung in kompakter Anordnung eingesetzt, deren Licht im Lichtleiterstab (2) ausgemischt und nach der ebenen Austrittsfläche (4) in ein Lichtleiterbündel (6) oder ein lichtaufteilendes Element geleitet wird, dort in einzelne Lichtleiterarme aufgeteilt und über deren Austrittsflächen (8a, 8b ... ) auf einzelne, ein Symbol bildende Sammellinsen (5) gelenkt wird, deren Brennpunkte (F) in den jeweiligen Austrittsflächen liegen. Die ...

RASTER OBJECTIVE AND RASTER RADIATION TRANSFORMER AS WELL AS OPTICAL SWEEP DEVICE WITH AT LEAST ONE OF THESE ELEMENTS

Beam Shaping Device for Focusing Light Beams from Semiconductor Laser

A beam shaping device, consists of a polarization beam splitter interface (PBS interface), four light surfaces and at least one light processing surface, as well as various entities are described. The PBS interface passes light in P polarization and reflects light in S polarization; two of the four light surfaces are light I/O surfaces, and the other two of them are light surfaces for processing (LSFP); the light processing surface is arranged and oriented to retro-reflect, or close to retro-reflect light beam coming from said PBS interface and back it to where it comes from, and, in the meantime, physically rotate the reflected light beam around its propagating direction by 90°, or close to 90°. The invention works for light beam in any polarization status including non-polarized beam.

Liquid crystal display

A liquid crystal display having a backlight module, liquid crystal layer and a color filter layer is disclosed in the invention. An ultraviolet unit for emitting ultraviolet is disposed in the backlight module. The color filter layer is composed of a purity of pixels, and at least one of the purity of pixels is filled with a wavelength-converting material. The wavelength-converting material can convert ultraviolet into green light.

Transmissive Body

An apparatus and method for transmitting, collimating and redirecting light from a point-like source to produce a collimated optical signal in a substantially planar form are provided. In one embodiment the apparatus is manufactured as a unitary transmissive body comprising a collimation element and a redirection element, and optionally a transmissive element. In another embodiment the apparatus is assembled from one or more components. The apparatus and method are useful for providing sensing light for an optical touch input device.

Charging device of robot cleaner

A charging device of a robot cleaner is provided. The charging device of a robot cleaner according to the embodiment includes at least one cover forming an appearance of the charging device, a base which is coupled with the cover and includes a terminal unit for charging the robot cleaner, an induction signal generating unit disposed at a side of the cover or the base to transmit a return induction signal to the robot cleaner, and an induction signal guide member disposed at a side of the induction signal generating unit to enhance a docking performance of the robot cleaner by improving linearity of the induction signal. The charging device according to the embodiment can guide the path for the return of the robot cleaner and recharge the robot cleaner stably.

Collimating optical element, collimating optical assembly, collimating optical array and collimating optical module

The collimating optical element includes a light incident surface and a light emission curved surface. The light incident surface receives a light emitted by a light source. The light emission curved surface and a first plane are intersected to form a first curve. The first curve has a plurality of first curve segments, and each first curve segment includes at least three first tangent points. After passing each first tangent point along a connecting line of the light source and each first tangent point, the light exits along a first collimation axis, and an included angle formed between the first collimation axis and an optic axis is greater than −15° and smaller than 15°. Thus, the light after passing the collimating optical element forms a one-dimensional collimating light.

Visual warning device

An optical device for providing a visual warning indication is disclosed. The optical device includes a high intensity localised light source such as a laser diode and a diffuser for modifying a beam intensity distribution of the emitted light from the high intensity localised light source to generate diffused light. The device further includes a collimator for collimating the diffused light from the diffuser to provide collimated light for emission from an output aperture to provide the visual warning indication. The beam intensity distribution of the emitted light is modified by the diffuser to generate a substantially uniform intensity distribution of the collimated light over the entire output aperture.

Surface light source device, liquid crystal display device, and lens

The present invention relates to a surface light source, including a light source section made up of plural light emitting diodes and lenses that expand light from these light emitting diodes. The lens in the light source section has a light incident surface on which light from the light emitting diode is incident with an optical axis at a center, and a light exit surface that expands and emits the incident light. The light incident surface has a continued depressed surface, while the light exit surface has a continued projected surface. The lens performs such that “sag Y” decreases from a maximum value “sag Y 0 ” with an increment of “θi”, where θi is an angle included between a straight line, connecting an arbitrary point on the light exit surface and a base point on the optical axis which corresponds to a position of the light emitting diode, and the optical axis; sag Y is a distance measured in a light axis direction from the base point on the optical axis to the arbitrary point on the light exit surface; and “sag Y 0 ” is a value of sag Y when angle θi is 0 (zero) degree, and wherein the light exit surface except a vicinity of the optical axis takes a shape satisfying a relation of 10 degrees<θmin<30 degrees, where θi takes a minimum value, i.e. θmin when curvature C of a micro-section on the light exit surface in a sectional view which includes the optical axis takes a minimum value.

Optical element having a plurality of reflective facet elements

An optical element for use in an illumination optical unit of an EUV microlithography projection exposure apparatus includes a plurality of reflective facet elements. Each reflective facet element has at least one reflective surface. In this case, at least one facet element is arranged in a manner rotatable about a rotation axis. The rotation axis intersects the at least one reflective surface of the facet element. With such an optical element, it is possible to alter the direction and/or the intensity of at least part of the illumination radiation within the illumination optical unit in a simple manner.

Condenser lens, lamp and camera

A condenser lens, lamp and camera applicable to an optical area are provided. The condenser lens is a physical glass lens and has an incident surface, an exit surface and a side surface arranged around a central axis of the condenser lens. The side surface is lattice-shaped. The condenser lens of the present invention adopts a glass material, which improves a light extraction efficiency of the lens and reduces a light energy loss. The lattice-shaped side surface of the lens reflects lights in different directions by multiple small-area lattice units instead of reflecting lights by a single curved surface. The reasonably-designed lattice structure enables each lattice unit reflecting lights in a predetermined direction, which may realize a uniform illumination at a small angle and is beneficial to spot-lighting. This condenser lens may be widely applied in all sorts of illuminating lamps or an illumination system of a camera.

Projection display device

A projection display device has an illumination optical system that includes a light-intensity equalization element, a first optical system, and an aperture regulation member. The aperture regulation member is disposed at a position that is not optically conjugate with the screen, and the aperture regulation member has at least one of the following, using measured or calculated relative illuminances at each of multiple segments of the image formation region or screen: an aperture expansion part provided at a position corresponding to a segment with a low relative illuminance, the aperture expansion part being a cutout that narrows the light-blocking section and widens the aperture section; an aperture contraction part provided at a position corresponding to a segment with a high relative illuminance, the aperture contraction part being a protrusion that widens the light-blocking section and narrows the aperture section.

Shaping laser beam launches into optical fibers to yield specific output effects

Certain embodiments may include a laser system configured to emit collimated laser light, a beam diverging element configured to diverge the laser light to yield a range of propagation angles with a maximum angle greater than zero, and fiber coupling optics configured to direct the diverged laser light towards a spot of a cross-section of a fiber core of an optical fiber. As another example, certain embodiments may include a laser system configured to emit collimated laser light, a beam shaping element configured to shape the laser light into a beam with an elliptical cross-section, and fiber coupling optics configured to direct the diverged laser light towards a spot of a cross-section of a fiber core of an optical fiber, where the spot's center point is located at a distance from the cross-section's center point.

Optical Unit

A beam light source of an image display device which displays an image on a screen by scanning an optical beam in a two-dimensional direction in which the beam light source includes a light source that emits a diffuse light modulated according to an image signal, and an optical element that shapes the light emitted from the light source to the optical beam. The optical beam has an elliptically shaped beam spot on the screen in which a major axis of the beam spot is substantially perpendicular to a scanning direction. A horizontal spot size of the optical beam on an exit surface of the optical element is at least or equal to a horizontal spot size of the optical beam on the screen, and the horizontal spot size of the optical beam on the screen is no greater than a horizontal pixel pitch displayed on the screen. 1. A beam light source of an image display device which displays an image on a screen by scanning an optical beam in a two-dimensional direction , the beam light source comprising:a light source that emits a diffuse light modulated according to an image signal; andan optical element that shapes the light emitted from the light source to the optical beam;wherein the optical beam has an elliptically shaped beam spot on the screen;wherein a major axis of the beam spot is substantially perpendicular to a scanning direction;wherein a horizontal spot size of the optical beam on an exit surface of the optical element is at least or equal to a horizontal spot size of the optical beam on the screen; andthe horizontal spot size of the optical beam on the screen is no greater than a horizontal pixel pitch displayed on the screen.5. The beam light source according to claim 4 , wherein the light source is activated by a predetermined duty ratio or deactivated within each pixel on the screen.7. The beam light source according to claim 6 , wherein the light source is activated by a predetermined duty ratio or deactivated within each pixel on the screen.8. An image display ...

Optical system for laser optical rectification and wave front control

A laser light shaping and wavefront controlling optical system 1 in accordance with an embodiment of the present invention comprises an intensity conversion lens 24 for converting and shaping an intensity distribution of laser light incident thereon into a desirable intensity distribution; an optical modulation device 34 for modulating the laser light emitted from the intensity conversion lens 24 so as to control a wavefront thereof; a condenser optical system 36 for converging the laser light issued from the optical modulation device 34 ; and an image-forming optical system 30 , arranged between the optical modulation device 34 and the condenser optical system 36 , having an entrance-side imaging plane between a plane 24 x where the laser light emitted from the intensity conversion lens 24 attains the desirable intensity distribution and a modulation plane 34 a of the optical modulation device 34 and an exit-side imaging plane on a pupil plane 36 a of the condenser optical system 36.

Device for Adjusting a Beam Profile, Laser Processing Machine and Method for Producing The Device

The invention relates to a device for adjusting a beam profile of a laser beam, which is guided in a light guide of a fibre optic cable provided with a protective sleeve, wherein the device comprises a deformation device for deforming the light guide in a section of the fibre optic cable not enclosed by the protective sleeve, a housing, which is designed to surround the light guide at least in the section not enclosed by the protective sleeve, and also two holders provided at opposite ends of the housing for fixing in each case one end of a section of the protective sleeve, wherein the holders each comprise an opening for feeding the light guide to the deformation device. The invention also relates to a laser processing machine having such a device and to an associated production method.

Microscope with tunable acoustic gradient index of refraction lens enabling multiple focal plan imaging

An apparatus, system and method for microscopy. The apparatus, system and method includes a stage configured to receive an item; a tunable acoustic gradient index of refraction (TAG) lens having a first aspect positioned to image the received item, wherein the first aspect of the TAG lens is configured to have an optical power profile in accordance with an operational frequency of the TAG lens; one or more lenses configured to magnify an image of the received item at a viewing point; and at least one pulsed light source configured to illuminate the received item and to pulse at one or more points within the optical power profile of the TAG lens.

APPARATUS FOR SHAPING THE LIGHT RAYS OF A LASER BEAM

The present disclosure relates to a shaping device for light rays of a laser beam that cross it, wherein the shaping device is formed by a conduit including an entry orifice, an exit orifice, and an internal wall, achieved by one or a plurality of facets adapted to reorient by at least one reflection at least a part of the rays of the crossing beam. 1. A shaping device for light rays of a laser beam that crosses it , formed by a conduit , comprisingan entry orifice;an exit orifice; andan internal wall, achieved by one or a plurality of facets, adapted to reorient by at least one reflection at least a part of the light rays of the crossing beam.2. The shaping device for light rays of a laser beam according to claim 1 , wherein at least one geometric characteristic of the shaping device is arranged depending on at least one characteristic of the laser beam to reorient the part of the light rays located on a periphery of the laser beam claim 1 , such that a relationship between this part and a surface of a section of the laser beam defines optical claim 1 , geometric claim 1 , and energy properties of the laser beam upon exiting from the shaping device claim 1 , the geometric characteristics of the shaping device being contained in a list including at least:a size (Le) of an aperture of the entry orifice of the shaping device,a size (Lo) of an aperture of the exit orifice of the shaping device,a shape of the exit orifice of the shaping devicea length (L) of the shaping device,a position of a focal point (Lp) of the laser beam at the entry orifice of the shaping device,a focus angle (α) of the laser beam at the entry orifice of the shaping device,a shape of the conduit performing as a waveguide.3. The shaping device for light rays of a laser beam according to claim 1 , wherein the shaping device is arranged to allow only one single and unique reflection to the part of the light rays of the crossing beam reflected by the shaping device.4. The shaping device for light ...

LDV with Diffractive Optical Element for Transceiver Lens

A transceiver device that includes one or more light sources configured to emit a light beam that includes one or more different wavelengths, and includes a diffractive optical element configured to initiate one or more wavelength specific responses from the light beam to form one or more transmission light beams and to direct the one or more transmission light beams substantially towards a target; and further includes one or more sensor devices configured to receive the one or more transmission light beams and one or more reception light beams that are reflected back from the target. The diffractive optical element (e.g., a holographic element) is used in either a monostatic, bistatic or multistatic design to reduce the required size and/or number of optical elements, lasers and receivers. The transceiver device may be used in a LIDAR system in order to measure air and wind parameters at multiple altitudes. 1. A transceiver device , comprising:one or more light sources configured to emit a light beam that includes one or more different wavelengths;a diffractive optical element configured to initiate one or more wavelength specific responses from the light beam to form one or more transmission light beams and to direct the one or more transmission light beams substantially towards a target; andone or more sensor devices configured to receive the one or more transmission light beams and one or more reception light beams that are reflected back from the target.2. The transceiver device of claim 1 , wherein the diffractive optical element includes one or more holographic optical elements.3. The transceiver device of claim 2 , wherein the one or more holographic optical elements are each configured to perform a plurality of optical tasks.4. The transceiver device of claim 2 ,wherein the one or more holographic optical elements include a first holographic optical element and a second holographic optical element, andwherein the first holographic optical element is ...

Beam transforming element, illumination optical apparatus, exposure apparatus, and exposure method with two optical elements having different thicknesses

A beam transforming element for forming a predetermined light intensity distribution on a predetermined surface on the basis of an incident beam includes a first basic element made of an optical material with optical activity, for forming a first region distribution of the predetermined light intensity distribution on the basis of the incident beam; and a second basic element made of an optical material with optical activity, for forming a second region distribution of the predetermined light intensity distribution on the basis of the incident beam, wherein the first basic element and the second basic element have their respective thicknesses different from each other along a direction of transmission of light.

Structured plane illumination microscopy

An apparatus includes a light source configured for generating a coherent light beam having a wavelength, λ, a light detector, and beam-forming optics configured for receiving the generated light beam and for generating a plurality of substantially parallel Bessel-like beams directed into a sample in a first direction. Each of the Bessel-like beams has a fixed phase relative to the other Bessel-like beams. Imaging optics are configured for receiving light from a position within the sample that is illuminated by the Bessel-like beams and for imaging the received light onto the detector. The imaging optics include a detection objective having an axis oriented in a second direction that is non-parallel to the first direction, where the detector is configured for detecting light received by the imaging optics. A processor configured to generate an image of the sample based on the detected light.

LONG-LIFE OPTICAL CONCENTRATOR BASED ON A SPECIFIC FRESNEL LENS PRODUCED FROM POLYMERIC MATERIALS FOR SOLAR POWER GENERATION

The present invention relates to a concentrator for focusing solar radiation, having surface structuring in the form of one or more Fresnel lenses on the lower side, and to the production thereof from polymeric materials by means of a specific extrusion process. The inventive concentrator can be employed in plants utilizable for photovoltaic or solar heating purposes, and has the required durability and performance in demanding climatic zones. The inventive concentrator enables particularly economic production and efficient concentration of solar radiation onto objects such as solar cells or absorber units, irrespective of the geometry thereof. The inventive concentrator has high longevity and—combined with this—high optical performance when employed in extreme and demanding climatic zones. This relates, for example, to the area of a high-performance solar cell used in concentrating photovoltaics, and likewise to an absorber tube which finds use in concentrating solar thermal collector, for example in the context of parabolic trough technology. 1. A process for producing a concentrator for solar power generation , the process comprising:{'sub': 's', 'producing a high-transparency first polymer layer from a pellet formulation by melting in an extruder, withdrawing via a slot dieand structuring a film surface with a gravure-bearing cooled roll or drum having a temperature gradient of at least 60° C. on a roll surface, on a later lower side of the concentrator,'}wherein the high-transparency first polymer layer after the structuring has an optical surface structure on a lower side of the concentrator,the optical surface structure forms one or more Fresnel lenses, andthe concentrator comprises a UV absorber and a UV stabilizer.2. The process according to claim 1 , further comprising:applying a second polymer layer with coextrusion by a second extruder before the structuring from a second pellet formulation on an upper side of the high-transparency first polymer layer.3. ...

NEW SOLAR CONCENTRATION DEVICES

The present invention relates to laminated solar concentration devices and to the production thereof from polymeric materials. The inventive solar concentration devices can be employed in photovoltaic systems or in solar thermal energy systems. The inventive solar concentration devices comprise Fresnel lenses and enable the efficient concentration of solar radiation onto objects such as solar cells or absorber units, irrespective of the geometry thereof. This relates, for example, to the area of a high-performance solar cell as used in concentrated photovoltaics (CPV), and equally to absorbers which are used in concentrated solar thermal energy systems (CSP). The invention in particular relates to the use of an UV- and weathering-stabilizer package for said laminated solar concentration devices, for improving optical lifetime and weathering resistance, and for preventing delamination. The invention further relates to a surface finish relevant to scratch resistance, antisoil properties, anti-reflection properties and chemicals resistance of the solar concentration device. 1. A UV protected laminated solar concentration device , comprising , asviewed from a solar light source,{'b': '3', 'a polymeric carrier layer (); and'}{'b': 1', '3', '2, 'a polymeric film () comprising a first surface embossed with optical structures which form one or more Fresnel lenses, and a second surface bonded to the polymeric carrier layer () either directly or via an adhesive layer (),'}wherein{'b': '3', '(i) the polymeric carrier layer () comprises a UV absorber and a UV stabilizer, or'}{'b': 5', '3', '4, '(ii) an UV protecting polymer layer (), comprising a UV absorber and a UV stabilizer, is bonded to the solar light source facing a surface of the polymeric carrier layer () either directly or via an adhesive layer (), or'}both (i) and (ii).2. The UV protected laminated solar concentration device according to claim 1 ,{'b': '7', 'further comprising: a polymer surface protecting layer (), ...

WINDOW WITH AT LEAST ONE PRISM UNIT COMPRISING TWO PRISMS AND A PHOTO VOLTAIC CELL

A window is provided comprising a front pane and one or more prism units each comprising: a primary prism disposed adjacent the front pane and having a primary entrance face and a primary exit face. The primary entrance face is configured to receive a first and a second portion of light that passes through the front pane. The window further comprises a secondary prism disposed adjacent the primary prism and having a secondary entrance face and a secondary exit face. The secondary entrance face is configured to receive from the primary exit face at least the second portion of light. At least one of the entrance and exit faces comprises a light diverging surface which causes divergence of light passing therethrough, and at least one of the entrance and exit faces different from the light diverging face, comprises a light converging surface configured to reduce the divergence. 1. A window comprising a front pane and one or more prism units each comprising:a primary prism disposed adjacent said front pane and having a primary entrance face and a primary exit face, said primary entrance face being configured to receive light that passes through the front pane; anda secondary prism disposed adjacent said primary prism and having a secondary entrance face and a secondary exit face, said secondary entrance face being configured to receive from said primary exit face a second portion of said light;wherein at least one of the entrance and exit faces comprises a light diverging surface which causes divergence of light passing therethrough, and wherein at least one of the entrance and exit faces different from said light diverging surface, comprises a light converging surface configured to reduce said divergence.2. The window of further comprising an adhesive material disposed between said front pane and said primary entrance face claim 1 , and having a refractive index different from that of said primary entrance face claim 1 , and wherein said primary entrance face comprises ...

Device for inspecting a biological fluid

A device for inspecting a biological fluid, including a channel through which the fluid flows, a first inspection module arranged in a first region of the channel, and a second inspection module arranged in a second region of the channel, the device configured to provide a quantity that is representative of output of the second inspection module. The first inspection module is configured to measure at least one electrical property of the fluid passing through the first region. The second inspection module is configured to measure at least one optical property of the fluid passing through the second region. The inspection device also includes a controller connected to the first inspection module and to the second inspection module and configured to control the second inspection module according to the output of the first inspection module.

Large-Angle Lens and Large-Angle Emission LED Light Source Module

Disclosed is a large-angle LED lens including a main body which has an incident surface on the inner side of the main body and an exit surface on the outer side thereof. The surfaces are provided symmetrically about the central axis of the main body. The incident and exit surfaces are transparent concave and convex surfaces, respectively. The maximum thickness d 1 of the main body at the lower part and the minimum thickness d 2 thereof at the top satisfy the relation: 4<d 1/ d 2 <6; the concave depth h 1 of the concave surface and the thickness d 2 satisfy the relation: h 1 >4*d 2; and the convex height h 2 of the convex surface and the thickness d 2 satisfy the relation: h 2 >5*d 2. With the disclosure, the light-emitting angle is increased while maximizing the utilization of the light. A large-angle emission LED light source module is also disclosed herein.

ILLUMINATION UNIT, PROJECTION DISPLAY UNIT, AND DIRECT-VIEW DISPLAY UNIT

An illumination unit capable of reducing luminance unevenness in illumination light, a projection display unit, and a direct-view display unit each of which uses such an illumination unit. An illumination optical system includes one or more light sources each including a solid-state light-emitting device; and an optical member configured to allow light incident from the solid-state light-emitting device to pass therethrough and exit therefrom, and at least one of the chips in the one or more light sources is configured of a laser diode. The optical member includes an integrator including a first fly-eye lens on which light from the solid-state light-emitting device is incident and a second fly-eye lens on which light from the first fly-eye lens is incident, and uniformizing a luminance distribution of light in a predetermined illumination region illuminated with light incident from the solid-state light-emitting device. A major-axis direction of a luminance distribution shape of light incident on an incident plane of the first fly-eye lens is different from arrangement directions of the cells in the first fly-eye lens. 1. An illumination unit comprising:one or more light sources each including a solid-state light-emitting device, the solid-state light-emitting device configured to emit light from a light emission region thereof, the light emission region including one or more dot-shaped or non-dot-shaped light-emitting spots; andan optical member configured to allow light incident from the solid-state light-emitting device to pass therethrough and exit therefrom,wherein the solid-state light-emitting device includes a single chip or a plurality of chips, the single chip configured to emit light in a single wavelength range or light in a plurality of wavelength ranges, the plurality of chips configured to emit light in a same wavelength range or light in wavelength ranges different from one another,at least one of the chips in the one or more light sources is ...

Device For Converting The Profile of a Laser Beam Into a Laser Beam With a Rotationally Symmetrical Intensity Distribution

The invention relates to a device for transforming the profile of a laser beam () into a laser beam () with a rotationally symmetrical intensity distribution such as an M-profile or a rotationally symmetrical top-hat profile, said device comprising at least one lens array () with at least two lenses () through which the laser beam () that is to be transformed can pass, and optical means which can direct the laser beam () that has passed through the at least one lens array () onto a working plane () and/or superimpose at least some sections of said laser beam on the working plane (), the lenses () of the at least one lens array () being arranged coaxially or concentrically with respect to one another. 123-. (canceled)2455. A device for transforming the profile of a laser beam () into a laser beam () with a rotationally symmetrical intensity distribution , such as an M-profile or a rotationally symmetric top-hat profile , comprising{'b': 1', '7', '5, 'at least one lens array () having at least two lenses (), through which the laser beam () to be transformed can pass, and'}{'b': 5', '1', '3', '5', '3, 'optical means which introduce the laser beam () that has passed through the at least one lens array () into a working plane () and/or to at least partially overlap that laser beam () in the work plane (),'}{'b': '7', 'wherein the lenses () of the at least one lens array) are arranged coaxially and concentrically with respect to one another.'}25711. The device according to claim 24 , wherein the lenses () of the at least one lens array () are arranged coaxially with respect to the optical axis of the at least one lens array ().2615. The device according to claim 25 , wherein the optical axis of the at least one lens array () is parallel to the propagation direction of the laser beam ().277. The device according to one of claims 24 , wherein at least a first of the lenses () has an annular shape.28777. The device according to claim 27 , wherein at least a second of the ...

AXIALLY SYMMETRIC POLARIZATION CONVERSION ELEMENT

An axially symmetric polarization conversion element that converts incident light into an axially symmetric polarized beam includes a reflection section having a shape obtained by rotating the cross section of a Fresnel rhomb wave plate along the direction of an optical axis around an axis that is parallel to the optical axis. The axially symmetric polarization conversion element converts the incident light into an axially symmetric polarized beam by utilizing two Fresnel reflections by the reflection section. 1. An axially symmetric polarization conversion element that converts incident light into an axially symmetric polarized beam ,the axially symmetric polarization conversion element having a shape obtained by rotating a cross section of a Fresnel rhomb wave plate along a direction of an optical axis around an axis that is parallel to the optical axis, andthe axially symmetric polarization conversion element converting the incident light into the axially symmetric polarized beam by utilizing N (N is a positive integer) number of Fresnel reflections.2. (canceled)3. The axially symmetric polarization conversion element as defined in claim 1 ,the axially symmetric polarization conversion element converting an incident linearly polarized Gaussian beam into a ring-shaped axially symmetric polarized beam by utilizing N (N is a positive integer) number of Fresnel reflections.4. The axially symmetric polarization conversion element as defined in claim 3 ,the axially symmetric polarization conversion element having an outer circumferential surface that corresponds to a slope of a truncated conical shape, and an inner circumferential surface that corresponds to a slope of an inverted conical shape that is present inside the truncated conical shape, and reflecting a linearly polarized Gaussian beam incident on a vertex of the inverted conical shape by the inner circumferential surface and the outer circumferential surface to emit the ring-shaped axially symmetric polarized ...

METHOD, OPTICAL SYSTEM AND LIGHTING ARRANGEMENT FOR HOMOGENIZING LIGHT

A method, an optical system and a lighting arrangement for homogenizing a bundle of light rays () by means of an elongated optical element () arranged for homogenizing light. The bundle of light rays is directed into a transversal entry face () of the optical element, and into at least one of the following geometrical regions: (a) a neighbourhood of the perimeter of the entry face; (b) a neighbourhood of at least a portion of a first line segment (R1) extending from the centre of the entry face to a mid-point of a vertex (); (c) a neighbourhood of at least a portion of a second line segment (R2a) extending from the centre of the entry face to a midpoint of an edge (). 1. An optical system for homogenizing a bundle of light rays , comprising: 'at least one light source arranged at said entry face and arranged for directing said bundle of light rays into said entry face, wherein said bundle of light rays is directed into at least one of the following geometrical regions:', 'an elongated optical element having a cylinder shape, arranged for homogenizing light, said optical element comprising a transversal entry face and a transversal exit face, said entry face having a perimeter shaped as a convex polygon and comprising at least two edges of zero curvature, and vertices between any two adjacent ends of said at least two edges, and wherein at least one of the vertices is a segment with positive curvature, the length of which constitutes at least 1% and at most 90% of the length of said perimeter, and'}(a) a neighbourhood of said perimeter of said entry face;(b) a neighbourhood of at least a portion of a first line segment extending from the centre of said entry face to a midpoint of a vertex;(c) a neighbourhood of at least a portion of a second line segment extending from the centre of said entry face to a midpoint of an edge.2. The optical system as claimed in claim 1 , wherein region (b) is located in an entry face shaped substantially as a polygon with an even number ...

LIGHT-EMITTING DEVICE

A light-emitting device includes a light-emitting portion that emits fluorescence in response to excitation light incident on a surface of the light-emitting portion, and a reflector that defines a light-emitting region on the surface of the light-emitting portion, the fluorescence being emitted from the light-emitting region. The excitation light has a top-hat energy intensity distribution on the surface of the light-emitting portion. 1. A light-emitting device comprising:a transparent substrate;a light-emitting unit which is disposed to be in contact with a first surface of the transparent substrate and which emits fluorescence from a light-emitting surface thereof in response to reception of excitation light;a reflector which is formed in contact with a side surface of the light-emitting unit; andan optical element which faces a second surface of the transparent substrate, the second surface being located opposite to the first surface of the transparent substrate, and which causes an intensity distribution of the excitation light to be less nonuniform,wherein after the excitation light travels through the optical element and the transparent substrate, the excitation light enters a contact surface of the light-emitting unit, wherein the contact surface is in contact with the first surface of the transparent substrate.2. The light-emitting device according to claim 1 , wherein the fluorescence emitted by the light-emitting unit is used as illumination light.3. The light-emitting device of claim 1 , further comprising:a convex lens which is disposed at a side of the transparent substrate, the side being located opposite to the light-emitting unit, and which focuses the excitation light on the light-emitting unit. This application is a continuation application of U.S. patent application Ser. No. 14/264,325, filed Apr. 29, 2014, which is a non-provisional application claiming priority to Japanese Patent Application No. 2013-127871 filed on Jun. 18, 2013, the entire ...

AN ARRANGEMENT COMPRISING AN OPTICAL DEVICE AND A REFLECTOR

According to an embodiment of the present inventive concept there is provided an arrangement comprising: an optical device including a radially inner beam forming portion and a radially outer portion at least partly enclosing the radially inner portion The arrangement further comprises a reflector arranged to reflect, in a first direction towards the radially outer portion light emitted by a light source such that a first optical path is formed from the light source to the radially outer portion via the reflector The radially outer portion is transparent such that incident light reaching the radially outer portion along the first optical path exits the radially outer portion in a direction parallel to the first direction, and at least one of scattering and attenuating for light reaching the radially outer portion along a second optical path extending directly between the light source and the radially outer portion The radially outer portion may thus act as a clear exit window for reflected light R, contributing to the intensity of a central beam F formed by the radially inner beam forming portion while preventing transmission of direct light D which otherwise could produce glare. 1. An arrangement comprising:an optical device including a radially inner beam forming portion and a radially outer portion at least partly enclosing the radially inner portion;a reflector arranged to reflect, in a first direction towards the radially outer portion, light emitted directly from a light source, said emitted light originating from the focal point of the reflector such that a first optical path is formed from the light source to the radially outer portion via the reflector;wherein the radially outer portion is transparent such that incident light reaching the radially outer portion along the first optical path exits the radially outer portion in a direction parallel to the first direction, and at least one of scattering and attenuating for light reaching the radially outer ...

Planar high angle line generator

A planar line generator including a first planar surface extending in a first direction, a second planar surface facing the first planar surface, and a beam splitter in front of the second planar surface, the beam splitter configured to output, from light incident thereon, an undeflected beam, a first beam deflected to a first side of the undeflected beam along the first direction, and a second beam deflected to a second side of the undeflected beam along the first direction, wherein the second planar surface includes a line diffuser configured to receive the undeflected beam, and first and second diffusers having a design different from the line diffuser, the first and second diffusers being configured to receive the first and second beams, respectively.

POWER-SCALABLE NONLINEAR OPTICAL WAVELENGTH CONVERTER

A system includes a nonlinear crystal positioned such that a focus of a laser beam is outside the nonlinear crystal in at least one plane perpendicular to a beam propagation direction of the laser beam. The nonlinear crystal is disposed in a crystal mount assembly. A laser beam may be directed at the nonlinear crystal for wavelength conversion. The system may be used as a deep-UV wavelength converter. 1. A system comprising:a laser source configured to generate a laser beam;a nonlinear crystal configured for wavelength conversion, wherein the nonlinear crystal is positioned such that a focus of the laser beam is outside the nonlinear crystal in at least one plane perpendicular to a beam propagation direction of the laser beam; anda crystal mount assembly, wherein the nonlinear crystal is disposed on the crystal mount assembly.2. The system of claim 1 , further comprising beam shaping optics disposed between the laser source and the nonlinear crystal and disposed downstream of the nonlinear crystal in the beam propagation direction.3. The system of claim 1 , wherein the crystal mount assembly is configured to adjust a beam size of the laser beam in the nonlinear crystal by adjusting a distance between a center of the nonlinear crystal and the focus.4. The system of claim 1 , wherein the crystal mount assembly includes a plurality of mounting features at different distances from the laser source claim 1 , wherein the crystal mount assembly is configured to be disposed on one of the mounting features claim 1 , and wherein a beam size of the laser beam in the nonlinear crystal is provided by selecting one of the mounting features.5. The system of claim 4 , wherein the nonlinear crystal is positioned such that the focus of the laser beam is outside the nonlinear crystal in the at least one plane perpendicular to the beam propagation direction of the laser beam with a Rayleigh range configured such that time averaged fundamental optical power density or harmonic optical ...

TUNABLE NONLINEAR BEAM SHAPING BY A NON-COLLINEAR INTERACTION

A method and system for beam shaping employing a non-collinear quasi phase-matched interaction in a crystal whose nonlinear coefficient was encoded by a computer generated hologram is provided herein. The same axis is used for both satisfying the phase-matching requirements and encoding the holographic information. This allows one-dimensional beam shaping using a very simple to fabricate nonlinear crystal pattern and two-dimensional beam shaping with high conversion efficiency. Both are demonstrated by converting a fundamental Gaussian beam into Hermite-Gaussian and Laguerre-Gaussian beams at the second harmonic in KTiOPOand stoichiometric lithium tantalate. The suggested scheme enables broad wavelength tuning by simply tilting the crystal. 1. A system for beam shaping comprising:a light source configured to generate a pump beam; anda crystal having a nonlinear coefficient encoded by a holographic pattern,wherein the pump beam is configured to cause a non-collinear quasi phase-matched interaction at the crystal, along a crystal axis, wherein said a holographic pattern is encoded on said crystal axis used for said quasi phase-matching.2. The system according to claim 1 , further comprising a tilt mechanism configured to tilt said crystal claim 1 , to yield beam shaping claim 1 , in accordance with the tilt angle.3. The system according to claim 1 , wherein said holographic pattern comprises a binary holographic pattern.4. The system according to claim 1 , wherein said holographic pattern is a computer generated hologram.5. The system according to claim 1 , wherein the beam shaping is one dimensional and is achieved by one dimensional modulation of said nonlinear coefficient.6. The system according to claim 6 , wherein a diffraction caused by the interaction is of an asymmetric nature and results with a single generated beam claim 6 , separated from a fundamental frequency of the beam.7. The system according to claim 1 , wherein the beam shaping is two dimensional and ...

Illumination system for an euv lithography device and facet mirror therefor

The invention relates to an illumination system for an EUV lithography device, comprising: a first facet mirror having facet elements that reflect EUV radiation, and a second facet mirror having facet elements for reflecting the EUV radiation reflected by the first facet mirror onto an illumination field. At least one of the facet elements of the first facet mirror or of the second facet mirror is designed as a diffractive optical element for diffracting the EUV radiation. In particular, at least one of the facet elements of the second facet mirror is designed as a diffractive optical element for illuminating only a part of the illumination field. The invention also relates to an EUV lithography device comprising such an illumination system, and to a facet mirror comprising at least one diffractive facet element.

Diffuser having asymmetric light output pattern and method of manufacturing same

The present invention relates to a diffuser and a method of manufacturing the same, and more particularly, to a diffuser and a method of manufacturing the same, in which light emitted through the diffuser forms an asymmetric light output pattern. A diffuser according to an exemplary embodiment is a diffuser that forms an asymmetric light output pattern by diffusing laser beams received from a laser source, the diffuser including: a base; and a micro lens array disposed on the base, in which the micro lens array has a plurality of micro lenses each comprising a lower surface and a curved surface disposed on the lower surface, and the lower surface has horizontal and vertical lengths different from each other.

MOPA WITH HIGH-GAIN SOLID-STATE AMPLIFIER

Radiation from a VBG-locked diode-laser at a locked wavelength of 878.6 nm is focused into a 30-mm long Nd:YVOoptical amplifier crystal for optically pumping the crystal (). The crystal amplifies a beam of seed-pulses from a fiber MOPA (). The power of pump radiation is about 75 Watts. The radiation is focused into a beam-waist having a minimum diameter of about 600 micrometers. This provides an amplifier having a high gain-factor well over 100. The high-gain factor provides a gain-shaping effect on the seed-pulse beam which overcomes thermal aberrations inherent in such high-power pumping, thereby producing an amplified seed-pulse beam with Mless than 1.3. 1. Laser master oscillator power amplifier apparatus , comprising:a source of seed-pulses having a duration between about 1 picosecond and about 30 picoseconds and a pulse-energy between about 0.5 and 5 nanojoules the seed-pulses characterized as having a seed-pulse beam;a neodymium-doped yttrium vanadate crystal for amplifying the seed-pulses, the crystal having a crystal length and an entrance face and an exit face, and the seed-pulse beam entering the crystal via the entrance-face and exiting the crystal via the exit-face and having a diameter which is about constant within the crystal;a source of CW optical pump-radiation having a wavelength of about 878.6 nanometers;at least one optical element arranged to focus the pump-radiation into a beam-waist coaxial with the seed-pulse beam, the beam-waist having a minimum diameter about at the entrance face of the crystal, and the beam-waist having a beam waist-length defined as the distance between points on opposite sides of the minimum diameter where the beam waist-length is about 1.414 times the minimum diameter; and wherein the neodymium-doped yttrium vanadate crystal has a neodymium-doping concentration between about 0.12% and 0.2%, the pump-beam has a diameter between about 1 and 1.5-times the seed-pulse beam diameter at the entrance-face of the crystal and ...

Zoom lens, extender lens, and imaging apparatus

A zoom lens has, in order from an object side, a focusing unit including a focusing lens group moving for focusing, a variable magnification unit including at least two variable magnification lens groups moving while changing a mutual interval for variable magnification, an aperture stop, and an image forming unit including an image forming lens group. The image forming unit consists of, in order from the object side, an M 1 lens group, an M 2 N lens group, and an M 3 lens group. The M 2 N lens group is replaceable with an M 2 E lens group that enlarges an image forming magnification. The M 2 E lens group satisfies predetermined conditional expressions (1) to (4).

DYNAMIC LASER BEAM SHAPING METHODS AND SYSTEMS

Dynamic radiation beam shaping methods and systems, comprising: providing a radiation source for delivering an input radiation beam; disposing a first optical element substantially adjacent to the radiation source; disposing a second optical element substantially adjacent to the first optical element; and moving one or more of the first optical element and the second optical element relative to one another such that either an output radiation beam has a variable predetermined shape or the output radiation beam maintains a predetermined shape when the input radiation beam is varied. Optionally, the first optical element and the second optical element each comprise a freeform shape and predetermined diffractive characteristics, refractive characteristics, reflective characteristics, hybrid characteristics, gradient index materials, metamaterials, metasurfaces, subwavelength structures, and/or plasmonics. The one or more of the first optical element and the second optical element are one or more of translated laterally with respect to an optic axis, rotated about the optic axis, tilted with respect to the optic axis, and separated along the optic axis. 1. A dynamic radiation beam shaping method , comprising:providing a radiation source for delivering an input radiation beam;disposing a first optical element substantially adjacent to the radiation source;disposing a second optical element substantially adjacent to the first optical element; andmoving one or more of the first optical element and the second optical element relative to one another such that either an output radiation beam has a variable predetermined shape or the output radiation beam maintains a predetermined shape when the input radiation beam is varied.2. The dynamic radiation beam shaping method of claim 1 , wherein the radiation source is a laser source and the radiation beams are laser beams.3. The dynamic radiation beam shaping method of claim 1 , wherein the first optical element and the second ...

KOEHLER INTEGRATOR DEVICE AND APPLICATION THEREOF IN A MULTI-FOCAL CONFOCAL MICROSCOPE

A Koehler integrator device () comprises a collimating lens () being arranged for collimating a light field created by an incoherent or partially coherent light source, a pair of planar first and second micro-lens arrays () being arranged for relaying portions of the collimated light field along separate imaging channels, wherein all micro-lenses of the first and second micro-lens arrays () have an equal micro-lens focal length and pitch and the micro-lens arrays () are arranged with a mutual distance equal to the micro-lens focal length, and a collecting Fourier lens () having a Fourier lens diameter and a Fourier lens focal length defining a Fourier lens front focal plane and a Fourier lens back focal plane, wherein the Fourier lens () is arranged for superimposing light from all imaging channels in the Fourier lens front focal plane and wherein the second micro-lens array () is arranged in the Fourier lens back focal plane, wherein a third micro-lens array () is arranged in the Fourier lens front focal plane for creating a wavelength independent array of illumination spots. Furthermore, a confocal microscope apparatus, which comprises the Koehler integrator device, and a method of using the confocal microscope apparatus are described. 1. A Koehler integrator device , comprisinga collimating lens being arranged for collimating a light field created by a light source device to provide a collimated light field,a pair of planar first and second micro-lens arrays, being arranged for relaying portions of the collimated light field along separate imaging channels, wherein all micro-lenses of the first and second micro-lens arrays have an equal micro-lens focal length and pitch and the micro-lens arrays are arranged with a mutual distance equal to the micro-lens focal length,a collecting Fourier lens having a Fourier lens diameter and a Fourier lens focal length defining a Fourier lens front focal plane and a Fourier lens back focal plane, wherein the Fourier lens is ...

Device for Homogenizing Laser Radiation

The assembly to homogenize a light beam, especially from an excimer laser, has at least two optical functional surfaces () in succession along the light path (z). Two groups of refractive or diffractive imaging elements are at the optical surfaces as cylinder lenses (), with at least two imaging elements of different characteristics within at least one of the groups. The light beam is finally carried through a Fourier lens () to the working plane (). 15100. A device for homogenizing laser radiation () , comprising:{'b': 1', '10', '100', '1', '11', '100', '1', '10', '11', '3', '100', '101', '102', '103, 'a first lens array () having a first optically functional boundary surface () through which the laser radiation (), which has an intensity profile in form of a Gaussian profile, can enter the first lens array (), and a second optically functional boundary surface () through which the laser radiation () can exit from the first lens array (), wherein at least one of the two optically functional boundary surfaces (, ) comprises a plurality of lens means (), which are capable of splitting the laser radiation () into a plurality of sub-beams (, , ), as well as'}{'b': 2', '1', '20', '101', '102', '103', '2', '21', '101', '102', '103', '2', '20', '21', '4', '101', '102', '103', '3', '1', '100', '101', '102', '103', '101', '102', '103', '101', '102', '103', '4', '2', '3', '1, 'a second lens array (), which is arranged in the beam path behind the first lens array (), with a first optically functional boundary surface (), through which the sub-beams (, , ) can enter the second lens array (), and with a second optically functional boundary surface (), through which the sub-beams (. , ) can exit the second lens array (), wherein at least one of the two optically functional boundary surfaces (, ) comprises a plurality of lens means () configured to refract the sub-beams (, , ), wherein the lens means () of the first lens array () are designed to split the laser radiation () into ...

ASPHERICAL MIRROR FOR FOCUSING LASER BEAM IN LINEAR PATTERN AND LASER SURGERY DEVICE EQUIPPED WITH SAME

According to an embodiment of the present invention, there is provided an aspherical mirror for focusing a laser beam in a linear pattern, the aspherical mirror including: a convex surface diffusely reflecting an irradiated laser beam; and a concave surface reflecting the laser beam such that the laser beam is focused at one point, wherein the laser beam reflected from the convex surface forms a long line beam as an angle of reflection with respect to a curvature of the convex surface changes, and the laser beam reflected from the concave surface is focused at one point on the line beam as an angle of reflection with respect to a curvature of the concave surface changes. 1. An aspherical mirror for focusing a laser beam in a linear pattern , the aspherical mirror comprising:a convex surface diffusely reflecting an irradiated laser beam; anda concave surface reflecting the laser beam such that the laser beam is focused at one point, whereinthe laser beam reflected from the convex surface forms a long line beam as an angle of reflection with respect to a curvature of the convex surface changes, andthe laser beam reflected from the concave surface is focused at one point on the line beam as an angle of reflection with respect to a curvature of the concave surface changes.2. The aspherical mirror of claim 1 , whereinthe aspherical mirror has a saddle-shaped structure with a curved cross section.3. A laser surgery device equipped with an aspherical mirror claim 1 , the laser surgery device comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the aspherical mirror of ;'}a tissue gripper being equipped with the aspherical mirror, and having a joint structure configured to grip and release a human body tissue; anda laser beam irradiator irradiating the laser beam onto the aspherical mirror by being connected to the tissue gripper, whereinthe laser beam is reflected along a curvature of the aspherical mirror to be in a line beam, and is irradiated onto the human ...

METHODS AND SYSTEMS FOR GENERATING NON-DIFFRACTING LIGHT SHEETS FOR MULTICOLOR FLUORESCENCE MICROSCOPY

Methods and systems for generating non-diffracting light sheets for multicolor fluorescence microscopy are disclosed. A method for generating a non-diffracting light patterned Bessel sheet comprises transmitting an input light beam through a Fourier transform lens the input light beam has a spatial intensity pattern at a first plane, and a Fourier plane is formed after the Fourier transform lens to obtain a first light beam; transmitting the first light beam through an annulus mask to obtain a second light beam; and transmitting the second light beam through an excitation objective lens to form a non-diffracting patterned light sheet. A method for generating a non-diffracting light line Bessel sheet comprises transmitting an input light beam at a first lane through an annulus mask to obtain a first light beam; and transmitting the first light beam through an excitation objective lens to form a non-diffracting Bessel light sheet. 1. A method for generating a non-diffracting light patterned Bessel sheet (PBS) , comprising:transmitting an input light beam through a Fourier transform lens to obtain a first light beam, wherein the input light beam has a spatial intensity pattern at a first plane;transmitting the first light beam through an annulus mask arranged at a Fourier plane formed after the Fourier transform lens to obtain a second light beam; andtransmitting the second light beam through an excitation objective lens to form a non-diffracting patterned light sheet.2. A method for generating a non-diffracting light line Bessel sheet (LBS) , comprising:transmitting an input light beam that has a narrower intensity distribution along a first direction than that along a second direction vertical to the first direction at a first plane through an annulus mask arranged at the first plane to obtain a first light beam; andtransmitting the first light beam through an excitation objective lens to form a non-diffracting Bessel light sheet.3. A system for generating a non- ...

OPTICAL ELEMENT ARRANGEMENTS FOR VARYING BEAM PARAMETER PRODUCT IN LASER DELIVERY SYSTEMS

In various embodiments, laser delivery systems feature one or more optical elements for receiving a radiation beam and altering the spatial power distribution thereof, a lens manipulation system for changing a position of at least one optical element within the path of the radiation beam, and a controller for controlling the lens manipulation system to achieve a target altered spatial power distribution on a workpiece. 121.-. (canceled)22. A laser delivery system for receiving and altering a spatial power distribution of a radiation beam from a beam source and focusing the radiation with the altered spatial power distribution onto a workpiece , the system comprising:a triple collimator for increasing a divergence of the radiation beam;disposed optically downstream of the triple collimator, a focusing lens for receiving the radiation beam and focusing the beam toward the workpiece;disposed optically upstream of the focusing lens, at least one optical element for receiving the radiation beam and altering the spatial power distribution thereof;a lens manipulation system for changing a position of the at least one optical element within a path of the radiation beam; anda controller for controlling the lens manipulation system to achieve a target altered spatial power distribution on the workpiece.23. The system of claim 22 , wherein the triple collimator comprises (i) a first plano-concave lens claim 22 , (ii) a second meniscus lens claim 22 , and (iii) a third plano-convex lens.24. The system of claim 23 , wherein the first plano-concave lens is disposed optically upstream of the second meniscus lens claim 23 , and the second meniscus lens is disposed optically upstream of the third plano-convex lens.25. The system of claim 23 , wherein the at least one optical element is disposed (i) optically downstream of the first plano-concave lens and (ii) optically upstream of the second meniscus lens and the third plano-convex lens.26. The system of claim 22 , wherein the at ...

LASER CRYSTALLIZATION APPARATUS AND METHOD OF DRIVING THE SAME

A laser crystallization apparatus includes a laser generating module configured to generate a laser beam, an optical module configured to guide the laser beam, an annealing chamber comprising a stage on which a target substrate comprising an amorphous thin film formed therein is disposed, the stage being movable along an X-axis direction and a Y-axis direction, and a tilt refractive lens configured to transform the laser beam having a cross-sectional area of a rectangle shape into a tilted laser beam having a cross-sectional area of a non-rectangular parallelogram shape and to irradiate the tilted laser beam perpendicular to the stage. 1. A laser crystallization apparatus comprising:a laser generating module configured to generate a laser beam;an optical module configured to guide the laser beam;an annealing chamber comprising a stage on which a target substrate comprising an amorphous thin film formed therein is disposed, the stage being movable along an X-axis direction and a Y-axis direction; anda tilt refractive lens configured to transform the laser beam having a cross-sectional area of a rectangle shape into a tilted laser beam having a cross-sectional area of a non-rectangular parallelogram shape and to irradiate the tilted laser beam perpendicular to the stage.2. The laser crystallization apparatus of claim 1 , wherein the stage moves along only the X-axis direction.3. The laser crystallization apparatus of claim 2 , wherein the cross-sectional area of the tilted laser beam comprises the non-rectangular parallelogram shape which has a shorter-side being parallel with the X-axis and a tilted longer-side tilted with respect to the Y-axis.4. The laser crystallization apparatus of claim 3 , wherein the optical module comprises:a plurality of reflection mirrors configured to reflect the laser beam toward the annealing chamber; anda first window configured to transmit the laser beam reflected from the reflection mirrors toward the annealing chamber, wherein the ...

Illumination Device for a Motor Vehicle

An illumination device is provided for a motor vehicle, including a light source consisting of a number of semiconductor diodes, and a scanner onto which a light beam produced by light of the light source falls and which modifies the position of the light beam during operation of the illumination device and thereby moves a light spot generated by the light beam at a distance from the illumination device. The moved light spot allows a predetermined light distribution to be generated. The illumination device is characterized in that a beam delimiting device, which allows the cross-section of the light beam to be delimited along a predetermined boundary, is provided between the light source and the scanner. The illumination device is designed in such a way that one or more light-shadow lines can be formed in the predetermined light distribution by way of at least one section of the predetermined boundary. 1. An illumination device for a motor vehicle , comprising:a light source constructed of a number of semiconductor diodes;a scanner onto which a light beam generated by light of the light source falls, the scanner changing position of the light beam during operation of the illumination device to move a light spot generated by the light beam at a distance from the illumination device, wherein a predetermined light distribution is generated by the moved light spot; anda beam-delimiting device arranged between the light source and the scanner, the beam-delimiting device delimiting a cross section of the light beam along a predetermined boundary, wherein one or more light-dark boundaries are formed in the predetermined light distribution by at least one segment of the predetermined boundary.2. The illumination device according to claim 1 , wherein the number of semiconductor diodes comprises one or more laser diodes.3. The illumination device according to claim 2 , wherein the predetermined boundary comprises one or more straight lines with which one or more of the light- ...

Illumination Device for a Motor Vehicle

An illumination device for a motor vehicle includes a light source consisting of a number of semiconductor diodes, and a scanner onto which a light beam obtained from light of the light source falls and which modifies the position of the light beam during operation of the illumination device and thereby moves a light spot produced by the light beam at a distance from the illumination device. The moved light spot allows a predetermined light distribution to be generated. The illumination device is designed such that the scanning speed at which the light spot is moved, the scanning path along which the light spot is moved, and/or the size of the light spot can be varied and is/are controlled to generate the predetermined light distribution. 1. An illumination device for a motor vehicle , comprising:a light source formed of a number of semiconductor diodes;a scanner arranged in a path of a light beam generated by light of the light source, the scanner changing a position of the light beam during operation of the illumination device to move a light spot generated by the light beam at a distance from the illumination device, wherein movement of the light spot generates a predefined light distribution, andwherein a scanning speed at which the light spot is moved, a scanning path along which the light spot is moved, and/or a size of the light spot is variably controlled to generate the predefined light distribution.2. The illumination device according to claim 1 , wherein a predefined light distribution having a locally varied light intensity is generated by reducing the scanning speed in regions of the predefined light distribution having a higher light intensity and/or passing the light spot more frequently by the regions with the higher light intensity according to the scanning path.3. The illumination device according to claim 2 , wherein the predefined light distribution with the locally varied light intensity is generated by reducing the size of the light spot in ...

Phase and Amplitude Control for Optical Fiber Output

A method for shaping an output light beam from an optical fiber by controlling the phase and amplitude of the beam by producing beam shaping elements on an exit facet of the optical fiber by direct surface texturing of the exit facet, where a controlled phase difference is achieved across the fiber cross-section over a predefined pattern. The optical fiber can be a single mode fiber or a multi-mode fiber. Either a binary or a complex phase difference can be achieved. Also disclosed is the related system for shaping an output light beam from an optical fiber. 1. A system for shaping an output light beam , the system comprising:an optical fiber configured to transmit the output light beam; andan exit facet of the optical fiber, wherein the exit facet comprises a surface textured according to a texturing pattern designed to initiate a static phase difference between a first portion of the output light beam and a second portion of the output light beam such that the textured surface has a plurality of varying depths in the exit facet.2. The system of claim 1 , wherein the optical fiber comprises chalcogenide claim 1 , fluoride claim 1 , or tellurite.3. The system of claim 1 , wherein the optical fiber comprises a solid core photonic crystal fiber.4. The system of claim 1 , wherein the optical fiber is a single mode fiber.5. The system of claim 1 , wherein the optical fiber is a multi-mode fiber.6. The system of claim 1 , wherein no additional material is attached to or deposited on the exit facet of the optical fiber to initiate the static phase difference.7. The system of claim 1 , wherein the surface is stamped to form the textured surface.8. The system of claim 1 , wherein the exit facet comprises a plurality of beam shaping elements formed by the textured surface.9. The system of claim 1 , wherein the textured surface comprises multiple steps created in a spiral pattern claim 1 , and wherein the output light beam is in a shape of a ring with no light in the center. ...

Angle adjustment apparatus and projection display apparatus

An angle adjustment apparatus includes a holder including a first surface, a base member that includes a second surface, and a driver driving the holder. At least one surface of the first and second surfaces includes a curved shape. The first surface slides around a plurality of axes passing through a center of curvature of the curved shape to the second surface according to a position where the driving force is applied to the holder. Sliding the first surface on the second surface allows the holder to tilt to the base member. The driver applies driving force to a surface of the holder perpendicular to a first direction when driving the holder in the first direction, and applies driving force to a surface of the holder perpendicular to a second direction orthogonal to the first direction when driving the holder in the second direction.

Optical element for spatial beam shaping

A spatial beam shaper structure and a corresponding optical system are provided. The spatial beam shaper structure comprises a light collecting surface configured for affecting light impinging thereon to provide a substantially smooth light profile of at least one optical property, the light collecting surface having a pattern in the form of multiple surface regions comprising regions of at least two different optical properties arranged in an alternating fashion, wherein an interface region between each two locally adjacent regions of the different optical properties has the at least two different optical properties, to provide substantially smooth transition of said different optical properties within the interface region.

Apparatus for Beam Shaping of Laser Radiation

An apparatus for beam shaping of laser radiation in the form of ultra short pulses includes an achromatic optical device comprising a first substrate having a first Abbe number and a second substrate connected to the first substrate and having a second Abbe number that is different from the first Abbe number. The first and second substrates are arranged to allow the laser radiation to at least partially pass through the first and second substrates in succession, wherein an optically functional transformation boundary surface is disposed on one of the first and second substrates. The optically functional transformation boundary surface allows the laser radiation to pass at least partially, such that a profile of the laser radiation is transformed into a top-hat profile.

LASER OPTICAL DEVICE AND HEAD

A laser optical device includes: an optical fiber unit for transmitting a laser beam; a connector for connecting the optical fiber unit; a collimator for transforming the laser beam into a parallel beam; and a condenser lens unit for condensing the parallel beam. The parallel beam emitted from the condenser lens unit is a flat-top beam. A laser optical head includes: a housing; a connector located in the housing and for connecting an optical fiber unit; a collimator formed at one side of the connector located in the housing and for transforming a laser beam transmitted from the optical fiber unit into a parallel beam; and a condenser lens unit located in the housing and for condensing the parallel beam. The parallel beam emitted from the condenser lens unit is a flat-top beam. 1. A laser optical device , comprising:an optical fiber unit for transmitting a laser beam;a connector for connecting the optical fiber unit;a collimator for transforming the laser beam into a parallel beam; anda condenser lens unit for condensing the parallel beam,wherein the parallel beam emitted from the condenser lens unit is a flat-top beam.2. The laser optical device of claim 1 ,wherein the optical fiber unit comprises a core portion and a covering portion surrounding the core portion.3. The laser optical device of claim 2 ,wherein the core portion has a polygonal shape.4. The laser optical device of claim 2 ,wherein the core portion has a square shape.5. The laser optical device of claim 1 , further comprising a beam conversion unit for converting the shape of the parallel beam and energy distribution.6. The laser optical device of claim 1 , further comprising a beam expansion unit that can change the size of the parallel beam.7. The laser optical device of claim 1 , further comprising a spatial filter that can change the shape of the parallel beam.8. A laser optical head claim 1 , comprising:a housing;a connector located in the housing and for connecting an optical fiber unit;a ...

Device for collimating a light beam, high-power laser, and focusing optical unit and method for collimating a light beam

A device for collimating a light radiation field of a light source (L) having a beam characteristic which is different in a first plane (FAC) from that of a second plane (SAC). The device comprises at least one first collimating lens (10) and a second collimating lens (20). The device has an additional optical element (30) in order to collimate the light radiation field in different planes to the first and to the second plane.

DETECTION LIGHT SOURCE MODULE AND DETECTION DEVICE

A detection light source module and a detection device are provided. The detection light source module includes a light emitting component, a light shape adjusting component, and a single band pass filter. The light emitting component is adapted to provide a light beam. The light shape adjusting component is located on a transmission path of the light beam and is adapted to adjust a light shape of the light beam. The light beam forms a strip lighting region through the light shape adjusting component, wherein the strip lighting region has a plurality of sub-lighting regions. The sub-lighting regions have the same size and do not overlap each other. The single band pass filter is located on the transmission path of the light beam and is located between the light emitting component and the light shape adjusting component. 1. A detection light source module , comprising:a light emitting component, adapted to provide a light beam;a light shape adjusting component, located on a transmission path of the light beam and adapted to adjust a light shape of the light beam, wherein the light beam forms a strip lighting region through the light shape adjusting component, the strip lighting region comprises a plurality of sub-lighting regions that are of the same size and do not overlap each other; anda single band pass filter, located on the transmission path of the light beam and located between the light emitting component and the light shape adjusting component.2. The detection light source module according to claim 1 , wherein the strip lighting region is of a first length in a first direction and of a second length in a second direction claim 1 , and the second length is greater than the first length.3. The detection light source module according to claim 2 , wherein the light shape adjusting component comprises a light incidence surface claim 2 , a side surface claim 2 , and a light emergence surface claim 2 , the side surface connects the light incidence surface and the ...

Solar Tracker With Refraction-Based Concentration

The invention comprises: a structure () supporting at least one refraction-based concentration element () and at least one collector () positioned parallel to one another; and first actuation means operatively connected so as to pivot the structure in relation to a base () about a first axis (El) parallel to the concentration element and to the collector, in order to track a relative movement of the sun. The concentration element is fixed in a stationary position on the structure and the collector is supported in said structure by at least two rocker arms () positioned parallel to one another and connected at the ends thereof to form an articulated quadrilateral mechanism. In addition, second actuation means are operatively connected so as to pivot the arms in relation to the structure about respective second axes (E) adjacent to the concentration element and perpendicular to the first axis, so that the collector can at any time be positioned at a maximum concentration point. 111-. (canceled)12. A solar tracker with refraction-based concentration , comprising a structure which supports at least one refraction concentration element and at least one collector that is mutually parallel thereto , and a first means of actuation operatively connected so as to pivot the structure with respect to a base around a first axis parallel to the refraction concentration element and to the collector in order to track movement relative to the sun , wherein the refraction concentration element is fixed in a stationary position on the structure and the collector is supported on the structure by at least two mutually parallel rocker arms connected to its ends to form an articulated quadrilateral mechanism , and wherein a second means of actuation is operatively connected so as to pivot the rocker arms with regard to the structure around respective second axes adjacent to the refraction-based concentration element and perpendicular to said first axis to place the collector at any time , ...

Light adjustment device, method of preparing the same, and display device

A light adjustment device, a method of preparing the same, and a display device are provided, the light adjustment device includes: light-absorption portions spaced apart from one another, with first gaps each functioning as light ray passages and between each two adjacent light-absorption portions of the light-absorption portions, respectively; first electrodes being transparent and between each two adjacent light-absorption portions of the light-absorption portions respectively and at least partially located on both sides of each of the light ray passages; at least one second electrode being also transparent, each being in a respective one of the first gaps respectively, with second gaps each being between each second electrode and a respective adjacent one of the first electrodes; and transflective portions being electrically polarized and in the second gaps respectively, comprising light-transmitting portions and light-reflecting portions, the light-reflecting portions being steerable to be turned under an electric field force.

LASER-DIODE BAR LIGHTING DEVICE

A lighting device () including at least one laser-diode bar with a plurality of emitters arranged adjacently to one another in a first direction and able to emit sub-beams during operation. The sub-beams having a lower beam divergence In a first direction that forms a slow-axis direction than in a second direction that forms a fast-axis direction and is perpendicular to the first direction. At least some of the emitters having a height offset in relation to the other emitters. A fast collimation means positioned behind the at least one laser-diode bar in a beam-propagation direction perpendicular to the slow-axis direction and the fast-axis direction. Beam transformation means positioned behind the fast-axis collimation means in the beam-propagation direction and designed to rotate the sub-beams through 90° as they pass thorough said means. A prism array positioned behind the beam transformation means in the beam-propagation direction and a number of prism means corresponding to the number of emitters and arranged adjacently to one another in the first direction, each of which has an incident light face and a light output face for one of the sub-beams. The incident light faces and/or the light output faces of the prism means, through which the sub-beams with a height offset pass, are designed such that the Poynting effect can be corrected by the parallelization of said sub-beams. 11. A fighting device () , comprising{'b': 100', '101', '102', '103', '10', '11', '12', '101', '102', '103', '101', '102', '103', '101', '102', '103', '10', '11', '12', '1, 'at least one laser diode bar () with a plurality of emitters (, , ), which are arranged next to one another in a first direction and which can emit sub-beams (, , ) during operation, which sub-beams have a smaller beam divergence in the first direction, which forms a slow-axis direction, than in a second direction orthogonal to the first direction, which forms a fast-axis direction, wherein at least some of the emitters ...

OPTICAL ELEMENT AND LIGHTING APPARATUS

In various embodiments, an optical element is provided. The optical element includes an imaging region with a lens arrangement which is aligned along an optical axis, and a collimation region which surrounds the imaging region to the side of the optical axis. 1. An optical element , comprising:an imaging region with a lens arrangement which is aligned along an optical axis; anda collimation region which surrounds the imaging region to a side of the optical axis.2. The optical element of claim 1 ,wherein the optical element is manageable in integral fashion.3. The optical element of claim 2 ,wherein said optical element is a body produced in integral fashion.4. The optical element of claim 1 ,wherein the lens arrangement is at least one of deformable or adjustable for varying an optical property thereof.5. The optical element of claim 4 ,wherein the lens arrangement comprises a plurality of lenses which are positionable in variable fashion relative to one another.6. The optical element of claim 1 ,wherein the collimation region is embodied as a reflector.7. The optical element of claim 6 ,wherein at least one of the collimation region is embodied as a total internal reflection region or the collimation region has a diffusely or specularly reflecting layer.8. The optical element of claim 1 ,wherein the collimation region has a reflecting surface that widens in a bowl-like manner in a direction of the optical axis.9. The optical element of claim 1 ,wherein a light-entrance face of the collimation region has, or is, a beam-forming face.10. The optical element of claim 1 ,wherein at least one of the imaging region or the collimation region are embodied with rotational symmetry about the optical axis.11. A lighting apparatus claim 1 , comprising an imaging region with a lens arrangement which is aligned along an optical axis; and', 'a collimation region which surrounds the imaging region to a side of the optical axis;, 'an optical element, comprisinga light-producing ...

High-efficiency line-forming optical systems and methods using a serrated spatial filter

High-efficiency line-forming optical systems and methods that employ a serrated aperture are disclosed. The line-forming optical system includes a laser source, a beam conditioning optical system, a first aperture device, and a relay optical system that includes a second aperture device having the serrated aperture. The serrated aperture is defined by opposing serrated blades configured to reduce intensity variations in a line image formed at an image plane as compared to using an aperture having straight-edged blades. 1. A method of performing defect annealing at a defect anneal temperature Tof a semiconductor wafer having a surface that includes a pattern , comprising:{'sub': '2', 'forming from a COlaser a light beam having a wavelength λ of nominally 10.6 microns and a first intensity profile with a Gaussian distribution in at least a first direction;'}passing at least 50% of the light beam in the first direction to form a first transmitted light;focusing the first transmitted light at a Fourier plane to define a second intensity profile having a central peak and first side peaks immediately adjacent the central peak;truncating the second intensity profile within each of the first side peaks with a serrated aperture disposed at the Fourier plane to define a second transmitted light that forms on the surface of semiconductor wafer a first line image having between 1000 W and 3000 W of optical power and an intensity uniformity of within +/−5% over a first line length in the range from 5 mm to 100 mm; and{'sub': 'D', 'scanning the first line image over the surface of semiconductor wafer to locally raise a temperature of the surface of semiconductor wafer to the defect anneal temperature T.'}2222. The method according to claim 1 , wherein the focusing of the first transmitted light is performed with a relay optical system having an optical component with a focal length f that defines the Fourier plane claim 1 , wherein the serrated aperture has a width d claim 1 , ...

Beam shaper with optical freeform surfaces and laser optic with a beam shaper of this kind

A beam shaper is provided that includes two optical elements arranged one behind the other along an optical axis. Each optical element has at least one optically active freeform surface. The optical elements are arranged displaceable by a relative displacement against each other along at least one axis substantially perpendicular to the optical axis. The optically active freeform surfaces have a height profile, which is a polynomial expansion having polynomial coefficients different from zero in finitely many polynomial orders. At least one polynomial coefficient, assigned to a polynomial order greater than three, is different from zero. The height profiles of the at least two freeform surfaces are selected such that input beams distributed rotationally symmetric about the optical axis with a Gaussian beam density profile are diffracted into output beams which are limited in a receiving plane within a rectangular cross section and are uniformly distributed about the optical axis.

HIGH RESOLUTION IMAGING OF EXTENDED VOLUMES

A light sheet optical system comprising means for forming a light sheet using a non-diffractive or quasi non-diffractive and/or propagation invariant beam that has an asymmetric intensity beam profile transverse to the direction of propagation, such as an Airy beam.

LASER SYSTEMS AND OPTICAL DEVICES FOR LASER BEAM SHAPING

Various claims of a multi-laser system are disclosed. In some claims, the multi-laser system includes a plurality of lasers, a plurality of laser beams, a beam positioning system, a thermally stable enclosure, and a temperature controller. Various claims of an optical system for directing light for optical measurements such laser-induced fluorescence and spectroscopic analysis are disclosed. In some claims, the optical system includes a beam shaping element configured to generate an illumination profile having a flat top. 161.-. (canceled)62. An illumination system , comprising:one or more lasers configured to output light having at least one wavelength;one or more beam combiners each aligned to receive light from a corresponding one of the one or more lasers, the one or more beam combiners configured to direct the received light along a path;a focusing optical element configured to receive light from the one or more beam combiners and focus the received light towards a focus point;a diffuser positioned spaced apart from the focus point to receive defocused light from the focusing element, the diffuser configured to diffuse the received defocused light and output diffused light;an actuator coupled to the diffuser and configured to vibrate the diffuser;a collimating optical element configured to receive light output by the diffuser and configured to substantially collimate the light; anda microlens array configured to receive light output by the diffuser and configured to alter the distribution of light.63. The illumination system of claim 62 , wherein the one or more lasers comprises a plurality of lasers.64. The illumination system of claim 62 , wherein the one or more beam combiners comprise one or more dichroic mirrors.65. The illumination system of claim 62 , further comprising at least one filter configured to filter a portion of the light output by a corresponding one of the one or more lasers.66. The illumination system of claim 62 , wherein the diffuser is ...

Broadband optics for manipulating light beams and images

The objective of the present invention is providing optical systems for controlling with propagation of light beams in lateral and angular space, and through optical apertures. Said light beams include laser beams as well as beams with wide spectrum of wavelengths and large divergence angles. Said optical systems are based on combination of diffractive waveplates with diffractive properties that can be controlled with the aid of external stimuli such as electrical fields, temperature, optical beams and mechanical means.

DEVICE FOR HOMOGENIZING A LASER BEAM

Device for homogenizing a laser beam including a first substrate with a first lens array including a plurality of cylindrical lenses and a second substrate with a second cylindrical lens array, which is arranged in the beam path downstream of the first substrate and includes a plurality of cylindrical lenses. Exactly one of the cylindrical lenses of the second lens array is assigned to each of the cylindrical lenses of the first lens array. Center-to-center distances between the cylindrical lenses of the first lens array are greater than the center-to-center distances between the cylindrical lenses of the second lens array. A lens vertex of a central one of the cylindrical lenses of the first lens array is aligned with a lens vertex of a central one of the cylindrical lenses of the first lens array that is assigned thereto. Lens vertices of the other cylindrical lenses of the second lens array and the lens vertices of the cylindrical lenses of the first lens array that are assigned thereto have an outwardly increasing vertex offset proceeding from the center of the second lens array. 1100. A device for homogenizing a laser beam ) , comprising:{'b': 1', '100', '1', '100', '1', '3', '3', '3', '3', '1', '3', '3', '100', '101', '101, 'a first substrate () having a first optically functional interface, through which the laser radiation () can enter the first substrate (), and having a second optically functional interface, through which the laser radiation () can emerge from the first substrate (), wherein at least one of the two optically functional interfaces comprises a plurality of convex cylindrical lenses (, ′) which are arranged alongside one another in a first direction and have cylinder axes oriented parallel to one another and in this way form a first lens array, wherein adjacent cylindrical lenses (, ′) have a pitch (p) and wherein the cylindrical lenses (, ′) are embodied such that they can split the laser radiation () into a plurality of partial beams (, ...

METHOD FOR OPTIMIZING AN INTENSITY OF A USEFUL LIGHT DISTRIBUTION

A method for optimizing an intensity of a useful light distribution includes: providing a light source for emitting a light beam in a z-direction, which defines an optical axis, with a first intensity distribution; providing a beam shaping optical unit and a beam focusing optical unit for generating a second intensity distribution to be used in a target plane, the target plane being inclined by an angle ALPHA relative to a focal plane determined by the beam focusing optical unit; determining a first intensity at a first point and a second intensity at a second point of the second intensity distribution to be used. The points P and P are arranged on different sides of the back focal plane; and displacing the beam shaping optical unit along the y-axis in such a way that the difference between the two intensities and lies within a predefinable limit.

DISPLAY APPARATUS

Disclosed herein is a display apparatus. The display apparatus includes a backlight unit configured to emit light, a display panel positioned in front of the backlight unit, and an optical film positioned in front of the display panel. The optical film includes a base layer positioned adjacent to the display panel, a first refractive layer positioned in front of the base layer and having a pattern including a first inclined portion totally reflecting some of light waves emitted from the backlight unit, and a second refractive layer positioned in front of the first refractive layer and having a lower refractive index than the first refractive layer. 1. A display apparatus comprising:a backlight unit configured to emit a first plurality of light waves, wherein the first plurality of light waves includes a second plurality of light waves;a display panel positioned in front of the backlight unit; andan optical film positioned in front of the display panel, a base layer positioned adjacent to the display panel,', 'a first refractive layer positioned in front of the base layer, wherein the first refractive layer includes a pattern, wherein the pattern includes a first inclined portion, wherein the first inclined portion is configured to totally reflect the second plurality of light waves, and wherein the first refractive layer is associated with a first refractive index, and', 'a second refractive layer positioned in front of the first refractive layer, wherein the second refractive layer is associated with a second refractive index, and wherein the second refractive index is less than the first refractive index., 'wherein the optical film comprises2. The display apparatus of claim 1 , whereinthe first inclined portion is oriented at a first angle with respect to a direction in which the first refractive layer extends, wherein the pattern includes a second inclined portion inclined at a second angle with respect to the direction in which the first refractive layer extends ...

MULTI-MODAL IMAGING SYSTEMS AND METHODS

Multi-modality imaging systems and methods for enabling controllable and/or automated switching between different imaging systems or modes. An imaging system includes a base plate having a first exposed region and a second region, a sample stage configured to hold a sample platform, and a first translation mechanism configured to translate the sample stage on the base plate along a first axis between a first position and a second position. In the first position the sample stage is positioned proximal to the first exposed region, and in the second position, the sample stage is positioned proximal to the second region. An illumination device is configured to illuminate a portion of the first exposed region, and a second translation mechanism is configured to translate the illumination device along a second axis substantially perpendicular to the first axis. 1. An imaging system , comprising:a base plate having a first exposed region and a second region;a sample stage, configured to hold a sample platform;a first translation mechanism, coupled with the base plate and the sample stage and configured to translate the sample stage on the base plate along a first axis between a first position and a second position, wherein when in the first position a first portion of the sample stage is positioned proximal to the first exposed region in the base plate, and when in the second position, the first portion of the sample stage is positioned proximal to the second region of the base plate;an illumination device located proximal to the base plate, and configured to illuminate a portion of the first exposed region in the base plate;a second translation mechanism, coupled with the base plate and the illumination device and configured to translate the illumination device along a second axis, the second axis being substantially perpendicular to the first axis;a first imager located proximal to the base plate on a side opposite the sample stage and configured to image the portion of ...

Device for Generating Laser Radiation Having a Linear Intensity Distribution

The invention relates to a device for generating laser radiation () having a linear intensity distribution (), comprising a plurality of laser light sources for generating laser radiation () and optical means for transforming laser radiation () exiting from the laser light sources into laser radiation () that has a linear intensity distribution () in a working plane (), wherein the laser light sources are constructed as fundamental mode lasers and the device is designed such that each of the laser beams () exiting from the laser light sources does not overlap with itself. 23. The device according to claim 1 , wherein the laser light sources generate laser beams () having a beam quality factor Mof less than 2.0.3. (canceled)4119. The device according to claim 1 , wherein the device is designed in such a way that the linear intensity distribution () has in the working plane () a ratio of length to width of greater than 10.510103a. The device according to claim 1 , wherein only the lateral flanks () of the intensity distributions () of the individual laser beams () overlap in the longitudinal direction (X) of the line.648. The device according to claim 1 , wherein the optical devices comprises collimating and/or imaging lenses ( claim 1 , ).66. The device according to claim 1 , wherein the optical device comprises at least one transformation component () transforming a Gaussian distribution into a top-hat distribution.8663636. The device according to claim 6 , wherein the device comprises a plurality of transformation components () claim 6 , with each one of the transformation components () being assigned to a respective one of the laser light sources in such a way that the laser beams () exiting from a first laser light source pass through a first transformation component () and the laser beams () exiting from a second laser light source pass through a second transformation component ().92. The device according to claim 1 , wherein the several common ferrules () are ...

REFLECTIVE AND REFRACTIVE SURFACES CONFIGURED TO PROJECT DESIRED CAUSTIC PATTERN

Techniques are described for designing and manufacturing a surface that produces a desired image when illuminated by a light source. As described, the desired image may be decomposed into a collection of Gaussian kernels (referred to as Gaussians). A shape of a micropatch lens corresponding to each Gaussian may be determined, and the resulting micropatch lenses may be assembled to form a highly continuous surface that will cast an approximation of the desired image formed form the sum of a plurality of Gaussian caustics. The disclosed techniques may be used to create a design for a light-redirecting surface amenable to milling (or other manufacturing process). 1. A light-redirecting surface , comprising:a plurality of micropatch lenses, wherein each micropatch lens is configured to cast a Gaussian caustic on a projection surface, and wherein the Gaussian caustics sum to form an approximation of a selected image.2. The light-redirecting surface of claim 1 , wherein each Gaussian caustic distributes a substantially equal amount of light energy.3. The light-redirecting surface of claim 1 , wherein the plurality of micropatch lenses are arranged as a substantially continuous surface created by milling a substantially planar face of the light-redirecting surface.4. The light-redirecting surface of claim 1 , wherein one or more of the Gaussian caustics are an anisotropic Gaussian caustic.51. The light-redirecting surface of claim claim 1 , claim 1 , wherein each micropatch lens refracts light in order to create the respective Gaussian caustic.61. The light-redirecting surface of claim claim 1 , claim 1 , wherein each micropatch lens reflects light in order to create the respective Gaussian caustic.7. The light-redirecting surface of claim 1 , wherein the selected image is decomposed into a plurality of Gaussian kernel functions claim 1 , each corresponding to one of the Gaussian caustics.8. The light-redirecting surface of claim 7 , wherein a topology of the light- ...

HOLOGRAPHIC MEMORY DEVICE

To reduce an influence of stray light and stably record/reproduce high-quality data in holographic recording/reproduction. A holographic memory device includes an optical system that guides a reference beam to an optical information recording medium at a desired angle of incidence, a control part that controls the angle of incidence of the reference beam generated in the optical system, and a lens part that images the reference beam in a desired position of the optical information recording medium. Further, at least a first light beam at a first angle and a second light beam at a second angle different from the first angle are output from the optical element, and the optical element is provided so that the first light beam may propagate within an effective diameter of the lens part and the second light beam may propagate to an outside of the effective diameter of the lens part. 1. A holographic memory device comprising:an optical system that generates a reference beam;an optical element that guides the reference beam generated in the optical system to an optical information recording medium at a desired angle of incidence;a control part that controls the optical element and controls the angle of incidence of the reference beam generated in the optical system to the optical information recording medium; anda lens part that images the reference beam controlled in the control part in a desired position of the optical information recording medium,wherein at least a first light beam at a first angle and a second light beam at a second angle different from the first angle are output from the optical element, andthe optical element is provided so that the first light beam may propagate within an effective diameter of the lens part and the second light beam may propagate to an outside of the effective diameter of the lens part.2. The holographic memory device according to claim 1 , wherein the optical element is provided so that an angle θstr formed by the second light beam ...

Illumination optical system and image projection apparatus

The illumination optical system illuminates an illumination surface. The illumination optical system includes a first optical system configured to cause a light flux from a light source to form a light source image, and a second optical system configured to introduce the light flux from the first optical system to the illumination surface. The second optical system includes in order from a first optical system side, a first lens having a positive power, a second lens having a negative power, and a third lens having a positive power. The second optical system satisfies conditions of 0.20≦ν2/ν3≦0.75 and 0.4≦BF/Fall<1.0 where ν2 represents an abbe number of the second lens, ν3 represents an abbe number of the third lens, Fall represents a focal length of the second optical system, and BF represents an air-equivalent distance from the third lens to the illumination surface.

ADAPTIVE OPTICS FOR COMBINED PULSE FRONT END PHASE FRONT CONTROL

In a method and system for controlling the shape of an optical pulse, the two-dimensional shape of the phase front is controlled using a first control device and the shape of the phase front and the two-dimensional shape of the pulse front is controlled using a second control device. The combined effect on the phase front results in a desired overall phase front control and the second device provides the desired overall pulse front control. This enables the phase front control and pulse front control to be decoupled. Correcting for pulse lengthening of femtosecond laser pulses during focusing by a dispersive lens. The spatially varying phase () introduced by the lens can be corrected for by a spatial light modulator like (SLM) a liquid crystal modulator. The spatially varying arrival time at the focus () can be compensated for by a deformable mirror (DM). A controller with a feedback loop and pulse characterization in the focus can compensate for the errors introduced by any dispersive focusing means. 1. A method of controlling the shape of an optical pulse , comprising:controlling the shape of the phase front of the pulse across a two dimensional area using a first control device which does not significantly alter the pulse front shape;controlling the shape of the phase front and the shape of the pulse front of the pulse across a two dimensional area using a second control device;wherein the first and second devices are controlled such that the combined effect on the phase front results in a desired overall phase front control and the second device provides a desired overall pulse front control.2. A method as claimed in claim 1 , comprising imaging the first control device onto the second control device using an optical lens system.3. A method as claimed in claim 1 , wherein the first control device varies the phase of the pulse by an amount within a range of 0 to 2π and the second control device varies the phase with a maximum phase change greater than 2π.4. A ...

ILLUMINATION DEVICE AND METHOD FOR GENERATING ILLUMINATION LIGHT

An illumination device has: a light source for emitting polarized light having a Gaussian beam profile and including a first polarized light component and a second polarized light component orthogonal to each other; and a spiral phase element for imparting a phase modulation amount which increases for each predetermined step amount along a circumferential direction about an optical axis OA to the first polarized light component of transmitted polarized light from the light source and making the beam profile of the first polarized light component a Laguerre-Gaussian beam profile, and forming a composite beam having a top-hat-shaped beam profile in which the second polarized light component of the transmitted polarized light from the light source and the first polarized light component having a Laguerre-Gaussian beam profile are synthesized. 1. An illumination device comprising:a light source which emits polarized light that has a Gaussian beam profile and that includes a first polarized light component and a second polarized light component orthogonal to each other; anda spiral phase element which provides an amount of phase modulation to the first polarized light component of the polarized light passing through the spiral phase element to turn the beam profile of the first polarized light component into a Laguerre-Gauss-like beam profile, where the amount of the phase modulation is increased by a predetermined amount along a circumference direction around an optical axis, and which forms a composite beam that has a top-hat-shaped beam profile and that is synthesized from the second polarized light component of the polarized light passing through the spiral phase element and from the first polarized light component having the Laguerre-Gauss-like beam profile.2. The illumination device according to claim 1 ,wherein the spiral phase element comprises:a liquid crystal layer which includes liquid crystal molecules aligned along a first direction;a first transparent ...

REFLECTIVE OPTICAL BEAM CONDITIONERS WITH INTEGRATED ALIGNMENT FEATURES

A reflective beam conditioner includes a monolithic body having two or more minors and at least one alignment feature. The at least one alignment feature has a predetermined orientation or position with respect to at least one of the two or more mirrors. The two or more minors are configured such that, in use, a beam reflects once sequentially off of each of the mirrors. A method of manufacturing such a reflective beam conditioner includes providing a monolithic body. The method further includes restraining the monolithic body to a machining fixture. The method further includes forming a first minor, a second minor, and an alignment feature in the monolithic body with the monolithic body restrained in the machining fixture. 1. A reflective beam conditioner configured to change the intensity profile , divergence , or Rayleigh range of an exit beam with respect to an incoming beam , the reflective beam conditioner comprising: two or more mirrors; and', 'at least one alignment feature having a predetermined orientation or position with respect to at least one of the two or more mirrors;, 'a monolithic body comprisingwherein the two or more mirrors are configured such that, in use, a beam reflects once sequentially off of each of the mirrors.2. The reflective beam conditioner of claim 1 , wherein: a first mirror having a first axis of rotation, the first mirror being paraboloidal; and', 'a second mirror having a second axis of rotation, the second mirror being paraboloidal, the second axis of rotation having a known orientation with respect to the first axis of rotation;', 'wherein one of the first mirror and the second mirror is convex and the other is concave; and, 'the two or more mirrors comprisethe at least one alignment feature comprises at least one alignment surface.3. The reflective beam conditioner of claim 2 , wherein the at least one alignment surface is orthogonal to the first axis of rotation and the second axis of rotation.4. The reflective beam ...

Optical Field Transformation Methods and Systems

A method of performing coherent transformations of optical fields includes forming a far field distribution of the input optical field. A fraction of the formed far field is diffracted by producing localized discontinuities within said far field. A Fraunhofer diffraction pattern of the diffracted optical field is formed. The Fraunhofer diffraction pattern is modified by producing localized optical path differences within the Fraunhofer diffraction pattern. The transformed output optical field is produced in the far field with respect to the modified Fraunhofer diffraction pattern. 1. A method of performing coherent transformations of optical fields , comprising the following steps:forming a far field distribution of the input optical field;diffracting a fraction of the formed far field by producing localized discontinuities within said far field;forming a Fraunhofer diffraction pattern of the diffracted optical field;modifying the Fraunhofer diffraction pattern by producing localized optical path differences within the Fraunhofer diffraction pattern; andproducing the transformed output optical field in the far field with respect to the modified Fraunhofer diffraction pattern.2. The method according to claim 1 , wherein diffraction of said far field is achieved by producing at least one of localized phase discontinuities and localized amplitude discontinuities.3. The method according to claim 1 , further comprising adjusting the localized discontinuities diffracting the formed far field.4. The method according to claim 3 , further comprising adjusting at least one of lateral dimensions claim 3 , lateral shapes claim 3 , and lateral positions of the localized discontinuities diffracting the far field.5. The method according to claim 3 , further comprising adjusting at least one of localized optical phase discontinuities and localized amplitude discontinuities.6. The method according to claim 1 , further comprising producing said localized discontinuities in the focal ...

BEAM-SHAPING DEVICE

A beam shaping device includes a first phase modulation unit including a phase-modulation type SLM, and displaying a first phase pattern for modulating a phase of input light, a second phase modulation unit including a phase-modulation type SLM, being optically coupled to the first phase modulation unit, and displaying a second phase pattern for further modulating a phase of light phase-modulated by the first phase modulation unit, and a control unit providing the first and second phase patterns to the first and second phase modulation units, respectively. The first and second phase patterns are phase patterns for approximating an intensity distribution and a phase distribution of light output from the second phase modulation unit, to predetermined distributions. 1. A beam shaping device comprising:a first phase modulation unit including a phase-modulation type spatial light modulator, and displaying a first phase pattern for modulating a phase of input light;a second phase modulation unit including a phase-modulation type spatial light modulator, being optically coupled to the first phase modulation unit, and displaying a second phase pattern for further modulating a phase of light phase-modulated by the first phase modulation unit; anda control unit configured to provide the first phase pattern and the second phase pattern to the first phase modulation unit and the second phase modulation unit, respectively, whereinthe first phase pattern and the second phase pattern are phase patterns for approximating an intensity distribution and a phase distribution of light output from the second phase modulation unit, to predetermined distributions.2. The beam shaping device according to claim 1 , wherein the first phase modulation unit and the second phase modulation unit respectively include reflection type spatial light modulators.3. The beam shaping device according to claim 2 , wherein the reflection type spatial light modulator composing the first phase modulation unit ...

LIGHT-EMITTING DEVICE

A light-emitting device includes a light source unit including a plurality of laser light sources; a dioptric system that refracts each light ray input from each of the plurality of laser light sources; a condensing optical system that condenses a plurality of refracted light rays input from the dioptric system, respectively, wherein the dioptric system is configured to refract a plurality of center light beams that are output along optical axes of the plurality of laser light sources, respectively, to proceed in directions each departing from an optical axis of the condensing optical system as proceeding toward the condensing optical system. 1. A light-emitting device comprising:a light source unit including a plurality of laser light sources;a dioptric system that refracts each light ray input from each of the plurality of laser light sources;a condensing optical system that condenses a plurality of refracted light rays input from the dioptric system, respectively,wherein the dioptric system is configured to refract a plurality of center light beams that are output along optical axes of the plurality of laser light sources, respectively, to proceed in directions each departing from an optical axis of the condensing optical system as proceeding toward the condensing optical system.2. The light-emitting device according to claim 1 , wherein the dioptric system includes a plurality of inclined surfaces each having an inclined angle corresponding to each of the plurality of laser light sources.3. The light-emitting device according to claim 2 , wherein the plurality of inclined surfaces are provided at at least one of an incident surface and a light exiting surface of the dioptric system.4. The light-emitting device according to claim 2 , wherein the dioptric system is a single optical component including the plurality of inclined surfaces.5. The light-emitting device according to claim 4 ,wherein the plurality of inclined surfaces are provided at both of an incident ...

LIGHT SOURCE MODULE

A light source module includes: laser light sources; parallel light lenses that converts laser beams from the laser light sources to collimated laser beams; a demagnification optical system including that demagnifies the collimated laser beams; an optical fiber; and a condenser lens that converges and couples the laser beams demagnified by the demagnification optical system with the optical fiber; wherein an Abbe number of each of the parallel light lenses is set to a set value suppressing an output fluctuation from the optical fiber to a predetermined value or less, the set value determined based on: a transverse magnification defined by a focal length of a corresponding one of the parallel light lenses, a demagnification of the demagnification optical system, and a focal length of the condenser lens; and a corresponding one of wavelength shifts of the laser beams generated by the laser light source. 1. A light source module comprising:laser light sources configured to emit laser beams;parallel light lenses configured to convert the laser beams from the laser light sources to collimated laser beams;a demagnification optical system including a convex lens and a concave lens, configured to demagnify the collimated laser beams;an optical fiber; anda condenser lens configured to converge and couple the laser beams demagnified by the demagnification optical system with the optical fiber; whereinan Abbe number of each of the parallel light lenses is set to a set value suppressing an output fluctuation from the optical fiber to a predetermined value or less, the set value determined based on: a transverse magnification defined by a focal length of a corresponding one of the parallel light lenses, a demagnification of the demagnification optical system, and a focal length of the condenser lens; and a corresponding one of wavelength shifts of the laser beams generated by the laser light sources.2. The light source module according to claim 1 , whereinthe laser light sources ...

Optical arrangement of adaptive illumination system with variable illuminating angle and vcm motor

A method and apparatus for illuminating at least one object appearing in a field of view (FOV). An illumination system includes an illumination source configured to provide illumination to illuminate a target of the object. A collimating lens is configured to collimate the illumination and to provide the illumination to a fixed multiple lens array (MLA). The fixed multiple lens array provides the illumination to a movable MLA. The movable MLA is configured to provide the illumination to the target to illuminate the target. The position of the movable MLA may be adjusted to alter the illumination full field angle.

LIGHT CONCENTRATOR STRUCTURES AND METHODS

An arrangement utilizes diffractive, reflective and/or refractive optical elements combined to intensify and homogenize electromagnetic energy, such as natural sunlight in the terrestrial environment, for purposes such as irradiating a target area with concentrated homogenized energy. A heat activated safety mechanism is also described. 1. An arrangement comprising:at least one optical member configured to receive electromagnetic energy incident thereon during normal operational temperatures; andat least one diffractive member, the diffractive member comprising a plurality of diffractive elements, the diffractive elements constructed and configured to diffract and homogenize the incident electromagnetic energy,wherein the at least one diffractive member is configured to concentrate the incident electromagnetic energy into a highly eccentric ellipse which approximates a line.2. The arrangement of claim 1 , comprising:a heat activated safety mechanism configured and arranged to prevent the at least one optical member from being exposed to the incident electromagnetic energy upon the at least one optical member reaching a predetermined maximum temperature.3. The arrangement of claim 2 , wherein the heat activated safety mechanism is configured to remove the at least one optical member from the path of the incident electromagnetic energy or to block the electromagnetic energy from reaching the at least one optical member claim 2 , upon reaching the predetermined maximum temperature.4. The arrangement of claim 3 , wherein the heat activated safety mechanism comprises a spring or lever like member formed from a shape memory material.5. The arrangement of claim 4 , wherein the shape memory material comprises a shape memory alloy claim 4 , the alloy having a composition such that the martensite to austenite phase transition temperature of the alloy is commensurate with the predetermined maximum temperature.6. The arrangement of claim 3 , wherein the spring or lever like ...

LC BEAM BROADENING DEVICE WITH IMPROVED BEAM SYMMETRY

Liquid crystal light beam broadening devices and their manufacture are described. Beneficial aspects of beam broadening devices employed for controlled illumination and architectural purposes are presented including providing symmetric beam broadening, improving the beam intensity profile, beam divergence preconditioning and improving projected beam intensity uniformity. Both beam control devices having in-plane and homeotropic ground state liquid crystal alignment are presented. 1. A liquid crystal (LC) beam broadening device comprising:a first LC sandwich having LC material contained within opposed front and back first substrates to have a homeotropic ground state orientation, the front and the back first substrates each having an arrangement of parallel electrode segments, wherein the segments on the front first substrate extend orthogonally to the segments on the back first substrate;a second LC sandwich having LC material contained within opposed front and back second substrates to have a homeotropic ground state orientation, the front and the back second substrates each having an arrangement of parallel electrode segments, wherein the segments on the front second substrate extend orthogonally to the segments on the back second substrate; andwherein the electrode segments of said first LC sandwich are rotationally offset from being parallel or orthogonal with respect to the electrode segments of said second LC sandwich by about 2 to about 8 degrees.2. The LC beam broadening device as defined in claim 1 , wherein said first LC sandwich and said second LC sandwich share a common substrate.3. The LC beam broadening device as defined in claim 1 , wherein said rotational offset is about 5 degrees.4. A liquid crystal (LC) beam broadening device comprising:a first LC sandwich having LC material contained within opposed front and back first substrates to have a homeotropic ground state orientation, the front and the back first substrates each having an arrangement of ...

POLARIZATION-ADJUSTED AND SHAPE-ADJUSTED BEAM OPERATION FOR MATERIALS PROCESSING

In various embodiments, laser delivery systems feature variable polarizers and beam shapers for altering the polarization and/or shape of the output beam for processing of various materials. The polarization and/or shape of the beam may be varied based on one or more characteristics of the workpiece. 1. A system for processing a workpiece , the system comprising:a beam emitter;a positioning device for varying a position of a beam of the beam emitter with respect to the workpiece;a variable polarizer for varying a polarization of the beam;a beam shaper for varying a shape of the beam; anda controller, coupled to the positioning device, the polarizer, and the beam shaper, for operating the beam emitter cause the beam to traverse a path across at least a portion of the workpiece for processing thereof, and to vary the polarization and/or shape of the beam along the path based at least in part on one or more properties of the workpiece.2. The system of claim 1 , wherein the controller is configured to maintain a linear polarization of the beam having a polarization direction approximately parallel to the path as the beam traverses the path.3. The system of claim 1 , wherein the controller is configured to vary an eccentricity of the polarization of the beam based at least in part on a thickness of the workpiece.4. The system of claim 1 , wherein the controller is configured to vary the polarization of the beam between a linear polarization state and a radial polarization state.5. The system of claim 1 , wherein the variable polarizer comprises a wave plate and a rotation element claim 1 , the rotation element being operated by the controller.6. The system of claim 5 , wherein the wave plate comprises at least one of a half-wave plate or a quarter-wave plate.7. The system of claim 5 , wherein the beam is linearly polarized and the controller operates the rotation element to maintain a polarization direction parallel to the path.8. The system of claim 1 , wherein the ...

Laser assembly that provides an adjusted output beam having symmetrical beam parameters

A laser assembly ( 10 ) for providing a beam ( 20 ) includes a gain chip ( 12 ) and an axisymmetric optical assembly ( 16 ). The gain chip ( 12 ) emits an astigmatic, output beam ( 14 ). The optical assembly ( 16 ) adjusts the output beam ( 14 ) so that an adjusted output beam ( 20 ) has an adjusted first axis divergence angle and an adjusted second axis divergence angle. In certain embodiments, a magnitude of the adjusted first axis divergence angle is approximately equal to a magnitude of an adjusted second axis divergence angle in the far field.

LIGHTING APPARATUS WITH CORRESPONDING DIFFRACTIVE OPTICAL ELEMENT

A lighting apparatus includes a laser source module and a diffractive optical module. The laser source module emits a laser beam. When the laser beam is operated in a transverse mode or a multi-transverse mode, the laser beam has a first laser beam pattern. The diffractive optical module is arranged in front of the laser source module or at a location that receives the laser beam, so that the laser beam is irradiated on the diffractive optical module. The diffractive optical module includes a first structure pattern corresponding to the first laser beam pattern. After the laser beam is diffracted by the first structure pattern, a first structured light with a first structured light pattern is generated. 1. A lighting apparatus , comprising:a laser source module emitting a laser beam, wherein when the laser beam is operated in a transverse mode or a multi-transverse mode, the laser beam has a first laser beam pattern; anda diffractive optical module arranged in front of the laser source module or at a location that receives the laser beam, so that the laser beam is irradiated on the diffractive optical module, wherein the diffractive optical module comprises a first structure pattern corresponding to the first laser beam pattern, wherein after the laser beam is diffracted by the first structure pattern, a first structured light with a first structured light pattern is generated.2. The lighting apparatus according to claim 1 , wherein the laser source module is a semiconductor laser source or a laser diode that has coherence or partial coherence claim 1 , or the laser source module further comprises a non-linear optical crystal or a liquid to produce other light beams with different wavelengths or in different spectra.3. The lighting apparatus according to claim 1 , wherein the first laser beam pattern is a ring-shaped pattern claim 1 , or a center of the first laser beam pattern is a hole without light pattern distribution.4. The lighting apparatus according to claim ...

LIGHT SHAPING ELEMENT AND LIGHT SHAPING ASSEMBLY

A device comprises an enclosure having a rear opening adapted to receive a light beam from a light source, a front opening adapted to emit a modified light beam, and internal walls extending between the rear opening and the front opening. The light beam is modified according to a perimeter of the front opening. A light shaping assembly comprises a two-dimensional array formed of a plurality of such devices, each one of the plurality of devices being adapted to receive a light beam from a corresponding light source. 1. A device , comprising:{'claim-text': ['a rear opening adapted to receive a light beam from a light source,', 'a front opening adapted to emit a modified light beam, and', 'internal walls extending between the rear opening and the front opening;'], '#text': 'an enclosure having:'}the light beam being modified according to a perimeter of the front opening.2. The device of claim 1 , wherein the perimeter of the front opening forms a rectangle.3. The device of claim 2 , wherein an internal perimeter of the enclosure is rectangular.4. The device of claim 1 , wherein the front opening of the enclosure is a plane of focus for the device.5. The device of claim 1 , further comprising a reflective material covering the internal walls of the enclosure.6. The device of claim 1 , wherein the internal walls of the enclosure are made of a reflective material.7. The device of claim 1 , wherein the enclosure further comprises a rear reflector plate claim 1 , the rear opening being formed as a cut-out in the rear reflector plate claim 1 , a face of the rear reflector plate on the inside of the enclosure being covered with a reflective material.8. The device of claim 1 , wherein the enclosure further comprises a rear reflector plate claim 1 , the rear opening being formed as a cut-out in the rear reflector plate claim 1 , the rear reflector plate being made of a reflective material.9. The device of claim 7 , wherein a size of the cut-out in the rear reflector plate is ...

FOCUSING DEVICE AND EUV RADIATION GENERATING DEVICE HAVING SAME

A focusing device for focusing a laser beam in a target area. The focusing device includes a paraboloid mirror configured to widen the laser beam; an ellipsoid mirror or a hyperboloid mirror configured to focus the widened laser beam at a focal position within the target area; and a movement device. The movement device is configured to move the ellipsoid mirror or the hyperboloid mirror relative to the paraboloid mirror, or together with the paraboloid mirror, to change the focal position within the target area. 1. A focusing device for focusing a laser beam in a target area , comprising:a paraboloid mirror configured to widen the laser beam;an ellipsoid mirror or a hyperboloid mirror configured to focus the widened laser beam at a focal position within the target area; anda movement device, which is configured to move the ellipsoid mirror or the hyperboloid mirror relative to the paraboloid mirror, or together with the paraboloid mirror, to change the focal position within the target area.2. The focusing device as claimed in claim 1 , wherein the paraboloid mirror is arranged at a fixed distance from the ellipsoid mirror or the hyperboloid mirror.3. The focusing device as claimed in claim 2 , wherein the movement device is configured to displace the ellipsoid mirror or the hyperboloid mirror together with the paraboloid mirror claim 2 , in at least one spatial direction.4. The focusing device as claimed in claim 1 , wherein the movement device is configured to rotate the ellipsoid mirror or the hyperboloid mirror about a first of its two focal positions.5. The focusing device as claimed in claim 4 , wherein the focal position of the paraboloid mirror coincides with the first focal position of the ellipsoid mirror or the hyperboloid mirror.6. The focusing device as claimed in claim 4 , wherein the ellipsoid mirror or hyperboloid mirror and the paraboloid mirror are attached to a common carrier that is configured to be displaced in at least one spatial direction.7. ...

Defocuser for compact free space communication

Methods, devices, and systems are described for free space optical communication. An example device can comprise a defocuser configured to receive an optical signal from a laser and control a beam divergence of the optical signal. The optical signal can comprise a data signal and a beacon signal. The device can comprise a controller configured to cause the defocuser to adjust the beam divergence based on an operational mode of the laser.

OPTICAL SYSTEM FOR LINE GENERATOR AND LINE GENERATOR

The optical system includes an optical element having a curvature in a first direction alone; and first and second lens array surfaces. Each of the lens array surfaces is provided with plural toroidal lens surfaces arranged in a second direction orthogonal to the first direction, the plural lens surfaces have a curvature mainly in the second direction, any lens surface on one of the lens array surfaces corresponds to one of the toroidal lens surfaces on the other, the direction of a first straight line connecting the vertexes of two toroidal lens surfaces corresponding to each other is orthogonal to the second direction, and in a cross section containing the first straight line and a second straight line that is in the second direction, one of the two toroidal lens surfaces is configured so as to form an imaging surface of the other for the object point at infinity. 1. An optical system for a line generator that generates a line using a light beam , comprising:an optical element having a curvature in a first direction alone; andfirst and second lens array surfaces;where each of the first and second lens array surfaces is provided with plural toroidal lens surfaces arranged in a line in a second direction orthogonal to the first direction, each of the plural toroidal lens surfaces has a curvature mainly in the second direction, any toroidal lens surface on one of the first and second lens array surfaces corresponds to one of the toroidal lens surfaces on the other, the direction of a first straight line connecting the vertexes of two toroidal lens surfaces corresponding to each other is orthogonal to the second direction, and in a cross section containing the first straight line and a second straight line that is in the second direction and orthogonal to the first straight line, one of the two toroidal lens surfaces is configured so as to form an imaging surface of the other for the object point at infinity.2. The optical system for a line generator according to ...

Transmissive Metasurface Lens Integration

Metasurface elements, integrated systems incorporating such metasurface elements with light sources and/or detectors, and methods of the manufacture and operation of such optical arrangements and integrated systems are provided. Systems and methods for integrating transmissive metasurfaces with other semiconductor devices or additional metasurface elements, and more particularly to the integration of such metasurfaces with substrates, illumination sources and sensors are also provided. The metasurface elements provided may be used to shape output light from an illumination source or collect light reflected from a scene to form two unique patterns using the polarization of light. In such embodiments, shaped-emission and collection may be combined into a single co-designed probing and sensing optical system. 1. A method for fabricating one or more metasurface elements or systems comprising:depositing a hard mask material layer on at least one surface of a substrate, wherein the substrate is transparent to light over a specified operational bandwidth;depositing a pattern material layer on the hard mask material layer;patterning the pattern material to form an array pattern atop the hard mask layer, the array pattern comprising one of either a positive or negative reproduction of a metasurface feature array, the metasurface feature array comprising a plurality of metasurface features having feature sizes smaller than the wavelength of light within the specified operational bandwidth and configured to impose a phase shift on impinging light within the plane of plurality of metasurface features;etching the hard mask layer using an anisotropic etch process to form a plurality of voids and raised features corresponding to the array pattern in the hard mask; andremoving any residual pattern material from atop the hard mask layer.2. The method of claim 1 , wherein:the substrate is formed of a material selected from the group consisting of: fused silica, sapphire, borosilicate ...

Contrast enhancing system

A contrast enhancing system is provided comprising: a digital micromirror device (DMD); a light source; a first integrator that receives light from the light source, comprising lateral long and short dimensions, the lateral short dimension at a non-zero angle to the DMD tilt axis; a second integrator that receives and shapes light from the first integrator; a telecentric lens about midway between the integrators that generates fast and slow f-number directions of the light in angle space, respectively corresponding to the lateral long and short dimensions of the first integrator, the slow f-number direction correspondingly at the non-zero angle to the DMD tilt axis, thereby increasing dead-zones between adjacent ones of a DMD illumination path and DMD reflection paths for each of the on, flat and off-state positions; and, at least one optical component that focuses the light along the illumination path from the second integrator onto the DMD.

POWER-SCALABLE NONLINEAR OPTICAL WAVELENGTH CONVERTER

A system includes a nonlinear crystal positioned such that a focus of a laser beam is outside the nonlinear crystal in at least one plane perpendicular to a beam propagation direction of the laser beam. The nonlinear crystal is disposed in a crystal mount assembly. A laser beam may be directed at the nonlinear crystal for wavelength conversion. The system may be used as a deep-UV wavelength converter. 1. A method comprising:generating a laser beam;directing the laser beam at a nonlinear crystal configured for wavelength conversion, wherein the nonlinear crystal is positioned such that a focus of the laser beam is outside the nonlinear crystal in at least one plane perpendicular to a beam propagation direction of the laser beam, wherein the nonlinear crystal is disposed on a crystal mount assembly, and wherein the crystal mount assembly provides an angle stability of greater than 0% and less than or equal to 27% of an angular acceptance range during operation; andnonlinearly converting the laser beam from a first wavelength to a second wavelength with the nonlinear crystal.2. The method of claim 1 , wherein the nonlinearly converting is one of second harmonic generation claim 1 , sum-frequency generation claim 1 , or difference frequency generation.3. The method of claim 1 , further comprising directing the laser beam through beam shaping optics disposed between a laser source and the nonlinear crystal and disposed downstream of the nonlinear crystal in the beam propagation direction.4. The method of claim 1 , further comprising adjusting a beam size of the laser beam in the nonlinear crystal with the crystal mount assembly by adjusting a distance between a center of the nonlinear crystal and the focus.5. The method of claim 1 , wherein the nonlinear crystal is positioned such that the focus of the laser beam is outside the nonlinear crystal in the at least one plane perpendicular to the beam propagation direction of the laser beam with a Rayleigh range configured ...

Projecting apparatus for spreading non-diffracted light

The present invention provides a projecting apparatus. The projecting apparatus comprises: a light source, a lens, and a diffractive optical element (DOE). The light source is utilized for emitting a Gaussian beam. The lens has a focal length, and is utilized for receiving the Gaussian beam and generating a de-focused Gaussian beam, wherein a distance between the light source and the lens is not equal to the focal length. The DOE is designed for the de-focused Gaussian beam, and utilized for receiving the de-focused Gaussian beam and spreading out a non-diffracted light of the de-focused Gaussian beam.

METHOD OF IMPROVING LATERAL RESOLUTION FOR HEIGHT SENSOR USING DIFFERENTIAL DETECTION TECHNOLOGY FOR SEMICONDUCTOR INSPECTION AND METROLOGY

A system that can be used for used for semiconductor height inspection and metrology includes a complementary plate that is used with a beam splitter to create desired astigmatism and to remove chromatic aberration. Simultaneous optimization of lateral resolution and sensitivity can be enabled. The complementary plate can be made of the same material and have the same thickness as the beam splitter. 1. A system comprising:a light source configured to provide light;a stage configured to hold a wafer to receive the light from the light source;a beam splitter; anda complementary plate disposed in a path of the light reflected from the wafer and the beam splitter, wherein the complementary plate is configured to create astigmatism and to remove chromatic aberration.2. The system of claim 1 , wherein the complementary plate is configured to remove at least 99.9% of the chromatic aberration.3. The system of claim 1 , further comprising:a sensor configured to receive the light reflected from the wafer; anda processor in electrical communication with the sensor, wherein the processor is configured to determine a height of an illuminated region on a surface of the wafer relative to a normal surface of the wafer.4. The system of claim 3 , wherein the sensor detects whether the light reflected from the wafer is under-focused or over-focused.5. The system of claim 3 , wherein the sensor comprises two photodiodes claim 3 , wherein the two photodiodes receive different quantities of the light reflected from the wafer when the light reflected from the wafer is under-focused or over-focused.6. The system of claim 3 , wherein the sensor comprises two photodiodes and further comprising:a knife-edge mirror configured to receive light reflected from the wafer, wherein the knife-edge mirror includes a reflective film and an anti-reflection film that are both disposed on the knife-edge mirror thereby forming a boundary between the reflective film and the anti-reflection film, wherein the ...

METHOD AND APPARATUS FOR FIBER-LASER OUTPUT-BEAM SHAPING FOR BEAM COMBINATION

A method and apparatus for combining a plurality of laser beamlets to form a single annular beam using spectral beam combination. This invention includes a plurality of laser sources that emit a plurality of beamlets, wherein each one of the plurality of beamlets has a different wavelength; a beam annularizer that includes a plurality of optical units arranged to receive the beamlets, and configured to convert each beamlet into a respective annular beam that has an annular cross-sectional power profile; a beam-intersection transform element configured to point each respective one of the plurality of annular beams in an angular intersection arrangement toward a first location; and a spectral beam combiner at the first location configured to combine the plurality of wavelengths in the plurality of annular beams into a first annular spectrally combined beam. 1. A system for combining a plurality of laser beamlets to form a single annular beam using beam combination , the system comprising:a plurality of laser sources that emit a plurality of beamlets, wherein each one of the plurality of beamlets has one of a plurality of different wavelengths;a beam annularizer that includes a plurality of optical units arranged to receive the plurality of beamlets, and configured to convert each beamlet into a respective one of a first plurality of annular beams that each has an annular cross-sectional power profile; anda beam combiner configured to receive all of the first plurality of annular beams and to combine the first plurality of annular beams into a first annular combined beam.2. The system of claim 1 , wherein the plurality of laser sources includes a plurality of optical-fiber lasers claim 1 , wherein the plurality of optical units includes a plurality of fiber termination units claim 1 , wherein each one of the plurality of fiber termination units is connected to a respective one of the plurality of optical-fiber lasers claim 1 , and wherein each one of the plurality of ...

Optical apparatus

An optical apparatus includes a structured light generation unit, a conversion lens module, a collimating lens and a casing. The structured light generation unit outputs a structured light. The light beams from the structured light generation unit are expanded by the conversion lens module. The expanded light beams are collimated by the collimating lens. After the light beams pass through the conversion lens module and the collimating lens, the light beams are projected to a projection surface. Consequently, a structured light pattern is formed on the projection surface. All conversion lenses of the conversion lens module have negative optical power. Consequently, the area of the structured light pattern on the projection surface is wider. Moreover, the structured light generation unit and the conversion lens module can be accommodated within the casing having a smaller thickness.

Beam Profile in Particle Counter

A particle counter system is disclosed having a linear diverging lens, preferably a Powell lens, in order to create a top-hat profile without a loss of beam energy. The particle counter system disclosed creates ideal beam intensity distribution across the ribbon of light originating from the laser diode of the particle counter. 1orienting at least one laser diode toward a Powell lens focused toward the particle counter;the at least one laser diode emitting a beam of light through the Powell lens;the Powell lens re-focusing the beam of light, focusing all energy coming from the at least one laser diode towards the particle counter to create a top-hat profile; andthe top-hat profile yields a consistent sample with uniform particle sizes.. A system for improving the beam profile of a particle counter comprising: This application is a non-provisional application of provisional application No. 61/877,900, filed on Sep. 13, 2013, and priority is claimed thereto.The present invention relates to particle detection and counting via the use of a conventional particle counter, and more specifically to the beam profile employed by a particle counter in order to accurately detect and provide information pertaining to airborne particles in the air.As it is known to those skilled in the art, a common approach in conventional particle counter design is a beam clipping design, which is employed to shape the particle counting beam. A cylindrical lens is conventionally used to shape the beam to create a “ribbon” of light that the particles would pass through. Using apertures, the beam is clipped so the shape resembles that of a “top hat” profile. This is so the particles of the same size would have equal reflected energy as it passes through any part of the beam. The truncated Gaussian beam gives a better response than a full Gaussian beam, but there are variations to the signal depending on path which the particle travels through the beam (stronger signal through the center, weaker ...

OPTICAL BEAM SHAPING DEVICE AND SPOT LIGHT USING THE SAME

An optical device that allows the usage of an extended light source in a more compact device is provided. The optical device may be configured to collimate light of a light source () along an optical direction. The optical device () may comprise a source surface (), a forward surface (), a lens body () and a peripheral element (). The source surface is arranged to receive light and may comprise a central portion () and a Fresnel portion (). The Fresnel portion includes at least one tooth () for deflecting light. The forward surface is arranged to output, along the optical direction, at least the deflected light into a collimated light. The source surface and the forward surface delimit the lens body. The peripheral element may be arranged to reflect light internally reflected at the forward surface by total inner reflection towards the optical direction to contribute to the collimated light. 1. A lighting device comprising an extended light source and an optical device ,said extended light source being arranged for emitting light from both centered and non-centered positions,said optical device configured to collimate light of said light source along an optical direction, said optical device comprising:a source surface arranged to receive light, wherein said source surface comprises a central portion and a Fresnel portion including at least one tooth, for deflecting light;a forward surface arranged to output at least the deflected light from the Fresnel portion into a collimated light along said optical direction;a lens body delimited by said source surface and said forward surface; anda peripheral element arranged to reflect light, originating from a non-centered position, internally reflected by total inner reflection at said forward surface towards said optical direction to contribute to said collimated light.2. A lighting device according to claim 1 , wherein said peripheral element is configured to reflect light having been deflected claim 1 , without total ...

WAVEGUIDES WITH IMPROVED INTENSITY DISTRIBUTIONS

An optical waveguide, for use a near-eye or heads-up display system, includes an input-coupler, an intermediate-component and an output-coupler. The input-coupler is configured to couple light corresponding to an image that is incident on the input-coupler, into the optical waveguide and towards the intermediate-component. The intermediate-component can be implemented as a Bragg polarization grating that comprises a stack of birefringent layers configured to diffract the light corresponding to the image that is incident thereon into a zero-order beam having one of right handed circular polarization or left handed circular polarization, and a first-order beam having the other one of right handed circular polarization or left handed circular polarization. The output-coupler is configured to couple, out of the optical waveguide, the light corresponding to the image that travels in the optical waveguide from the input-coupler to the output-coupler via the intermediate-component by way of total internal reflection (TIR). 1. A near-eye or heads-up display system , comprising:an optical waveguide including an input-coupler, an intermediate-component and an output-coupler; anda display engine configured to produce an image and to direct light corresponding to the image towards the input-coupler of the optical waveguide;the input-coupler configured to couple light corresponding to the image, that is incident on the input-coupler, into the optical waveguide and towards the intermediate-component;the intermediate-component configured to perform pupil expansion and direct the light corresponding to the image towards the output-coupler;the output-coupler configured to couple, out of the optical waveguide, the light corresponding to the image that travels in the optical waveguide from the input-coupler to the output-coupler via the intermediate-component by way of total internal reflection (TIR); andthe intermediate-component comprising a Bragg polarization grating.2. The system ...

Image forming apparatus that performs exposure for discharging photoconductive drum

In an image forming apparatus that executes exposure for discharging a photoconductive drum by a light emitting unit by which an electrostatic latent image is formed, a duty ratio of a drive signal for a driving unit that exposes the photoconductive drum for performing discharging of the photoconductive drum is set to be 100%, and it is thereby possible to suppress generation of radiation noise resulting from the drive signal for the discharging.

Transmissive Metasurface Lens Integration

Metasurface elements, integrated systems incorporating such metasurface elements with light sources and/or detectors, and methods of the manufacture and operation of such optical arrangements and integrated systems are provided. Systems and methods for integrating transmissive metasurfaces with other semiconductor devices or additional metasurface elements, and more particularly to the integration of such metasurfaces with substrates, illumination sources and sensors are also provided. The metasurface elements provided may be used to shape output light from an illumination source or collect light reflected from a scene to form two unique patterns using the polarization of light. In such embodiments, shaped-emission and collection may be combined into a single co-designed probing and sensing optical system. 1. An illumination device comprising:a vertical cavity surface emitting laser (VCSEL) array; anda plurality of metasurface elements arranged in a planar array such that light emitted from the VCSEL array passes through the planar array of metasurface elements, andwherein the planar array of metasurface elements collimates light from the VCSEL array and multiplies the VCSEL in the far field.2. The illumination device of claim 1 , wherein the focal length of the planar array of metasurface elements is equal to the distance from the top of the VCSEL array to planar array of metasurface elements.3. The illumination device of claim 1 , wherein the metasurface elements comprise amorphous silicon and the VCSEL array is operating at a wavelength of 940 nm.4. The illumination device of claim 1 , wherein the first polarization is parallel to the second polarization.5. The illumination device of claim 1 , wherein the collimated light from the lens is telecentric across the planar array of metasurface elements.6. An illumination device comprising:a vertical cavity surface emitting laser (VCSEL) array; anda plurality of metasurface elements arranged in a planar array such that ...

Optical Elements with Gradient Refractive Index and Optical Systems Including Such Optical Elements

An optical element includes a first surface and an opposed second surface. A refractive index of the optical element varies from a center of the optical element to a perimeter of the optical element such that the optical element is configured to convert a Gaussian input beam introduced to the first surface into an output beam from the second surface with a substantially flat irradiance profile along at least one axis. The optical element can have a refractive index that varies along an axis perpendicular to the optical axis of the optical element and has a profile that is concave up at a center of the optical element.