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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 22496. Отображено 100.
05-01-2012 дата публикации

Projection lens module of pico projector

Номер: US20120002171A1
Автор: David Tsai, Shin-Gwo Shiue
Принадлежит: Cordic Tech Co Ltd

The projection lens module contains a number of lenses, a stop, a PBS (polarizing beam splitter), and a LCoS (liquid crystal on silicon) panel. The lenses, from outside towards inside, contains a negative first lens, a positive second lens attached to the negative first lens, a negative third lens, a positive fourth lens forming a doublet structure with the negative third lens, and a positive fifth lens. The stop is positioned between the positive second lens and the negative third lens. The PBS is positioned between the positive fifth lens and the LCoS panel, and the positive fifth lens has an area larger than that of the LCoS panel. The LCoS panel is positioned behind the PBS. The projection module is able to overcome the size issue of the projection lens module, to enhance image resolution and to reduce image distortion.

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Номер записи: 1
11-05-2017 дата публикации

Объектив

Номер: RU0000170801U1
Автор: Валерий Викторович Жихарев, Ниталия Ефимовна Кунделева, Ольга Ильинична Панько, Татьяна Евгеньевна Емельянова
Принадлежит: Открытое Акционерное Общество "Пеленг"

Объектив содержит силовой компонент, включающий положительную двусклеенную линзу из двояковыпуклой линзы и отрицательного мениска, одиночную двояковыпуклую линзу, отрицательную двусклеенную линзу из двояковогнутой линзы и положительного мениска, и коррекционный компонент в виде отрицательного мениска, склеенного из двояковогнутой и двояковыпуклой линз. Между силовым и коррекционным компонентами установлен спектроделительный блок, пропускающий излучение в диапазоне 500-900 нм и отражающий излучение длиной волны (1030±30) нм или (1540±30) нм. Расстояние между силовым и коррекционным компонентами составляет не менее 0,4 фокусного расстояния объектива, а сумма их оптических сил не превышает 0,002 по абсолютной величине. Расстояние между одиночной двояковыпуклой линзой силового компонента и его отрицательной двусклеенной линзой отвечает условию:0,04f'<d<0,05f', где f'- фокусное расстояние силового компонента. Технический результат - увеличение поля зрения и фокусного расстояния и повышение качества изображений при длине объектива от его первой поверхности до плоскости изображений не более фокусного расстояния объектива. 3 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 170 801 U1 (51) МПК G02B 9/34 (2006.01) G02B 13/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21)(22) Заявка: 2016146674, 28.11.2016 (24) Дата начала отсчета срока действия патента: 28.11.2016 11.05.2017 (73) Патентообладатель(и): Открытое акционерное общество "Пеленг" (BY) Приоритет(ы): (30) Конвенционный приоритет: 11.12.2015 BY u20150425 Адрес для переписки: 220114, Рес. Беларусь, г. Минск, ул. Макаенка, 25, ОАО "Пеленг" U1, 10.07.2014. RU 81345 U1, 10.03.2009. RU 77457 U1, 20.10.2008. US 6339508 B1, 15.01.2002. 1 7 0 8 0 1 R U (57) Формула полезной модели Объектив, содержащий установленные по ходу луча силовой и коррекционный компоненты, при этом силовой компонент включает положительную двусклеенную линзу, ...

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Номер записи: 2
11-12-2018 дата публикации

Инфракрасная система с двумя полями зрения

Номер: RU0000185562U1
Автор: Виллен Арнольдович Балоев, Владимир Петрович Иванов, Дина Нургазизовна Шарифуллина, Наталья Геннадьевна Нигматуллина, Сергей Владимирович Рагинов
Принадлежит: Акционерное общество &#34;Научно-производственное объединение &#34;Государственный институт прикладной оптики&#34; (АО &#34;НПО ГИПО&#34;)

Полезная модель относится к области оптического приборостроения и касается инфракрасной системы с двумя полями зрения. Система состоит из трех расположенных вдоль оптической оси оптических компонентов и фотоприемного устройства. Первый компонент содержит первую положительную выпукло-вогнутую и вторую отрицательную асферическую линзы. Второй компонент содержит двояковогнутую асферическую линзу и установлен с возможностью перемещения вдоль оптической оси. Третий компонент содержит первую двояковыпуклую и вторую отрицательную асферическую линзы. Для фокусных расстояний f'f'и f'первого, второго и третьего компонентов соответственно и максимального фокусного расстояния системы f'выполняются следующие соотношения: 0,5<f'/ f'<0,7; -0,15<f'/ f'<-0,07; 0,1<f'/ f'<0,2. Технический результат заключается в уменьшении величины перемещения второго компонента и значения коэффициента телеукорочения. 1 ил., 4 табл. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 185 562 U1 (51) МПК G02B 13/14 (2006.01) G02B 15/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G02B 13/14 (2006.01); G02B 15/14 (2006.01) (21)(22) Заявка: 2018128995, 07.08.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: 11.12.2018 (45) Опубликовано: 11.12.2018 Бюл. № 35 Адрес для переписки: 420075, г. Казань, ул. Н. Липатова, 2, АО "НПО "ГИПО" (73) Патентообладатель(и): Акционерное общество "Научно-производственное объединение "Государственный институт прикладной оптики" (АО "НПО ГИПО") (RU) (56) Список документов, цитированных в отчете о поиске: US 6424460 B1, 23.07.2002. US 1 8 5 5 6 2 R U (54) ИНФРАКРАСНАЯ СИСТЕМА С ДВУМЯ ПОЛЯМИ ЗРЕНИЯ (57) Реферат: Полезная модель относится к области первую двояковыпуклую и вторую оптического приборостроения и касается отрицательную асферическую линзы. Для инфракрасной системы с двумя полями зрения. фокусных расстояний f'I f'II и f'III первого, ...

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Номер записи: 3
16-09-2019 дата публикации

Светосильный инфракрасный объектив

Номер: RU0000192401U1
Автор: Александр Соломонович Хитрик, Владимир Андреевич Быстров, Григорий Сергеевич Полищук, Лариса Евгеньевна Левандовская, Михаил Наумович Сокольский
Принадлежит: Акционерное общество &#34;ЛОМО&#34;

Объектив может быть использован в тепловизионных приборах, приемники которых чувствительны в инфракрасной области спектра, в частности в диапазоне спектра 8-14 мкм. Объектив содержит четыре мениска, первый - положительный мениск, обращенный вогнутостью к изображению, второй - положительный мениск, обращенный выпуклостью к изображению, третий - отрицательный мениск, обращенный выпуклостью к изображению, четвертый - положительный мениск, обращенный выпуклостью к объекту. Радиусы кривизны R поверхностей линз и расстояния d между линзами удовлетворяют условиям: 0,76≤(R/R)≤0,8; 0,87≤(R/R=R/R)≤0,94; 0,3f'≤d/f'≤0,43f'; 0,93f'≤(d+d+d)≤lf', где d, d, d- расстояния между первой и второй, второй и третьей, третьей и четвертой линзами соответственно, f' - фокусное расстояние объектива в целом. Технический результат - увеличение относительного отверстия до 1:0,9 при обеспечении требуемого качества изображения по всему полю. 1 з.п. ф-лы, 4 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 192 401 U1 (51) МПК G02B 13/14 (2006.01) G02B 9/34 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G02B 13/14 (2019.05); G02B 9/34 (2019.05) (21)(22) Заявка: 2019113244, 29.04.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 16.09.2019 (73) Патентообладатель(и): Акционерное общество "ЛОМО" (RU) (45) Опубликовано: 16.09.2019 Бюл. № 26 (56) Список документов, цитированных в отчете о поиске: SU 1714562 A1, 23.02.1992. RU 2506616 C1, 10.02.2014. RU 2348059 C1, 27.02.2009. RU 2630194 C1, 05.09.2017. US 4030805 A1, 21.06.1977. 1 9 2 4 0 1 R U (54) СВЕТОСИЛЬНЫЙ ИНФРАКРАСНЫЙ ОБЪЕКТИВ (57) Реферат: Объектив может быть использован в выпуклостью к объекту. Радиусы кривизны R тепловизионных приборах, приемники которых поверхностей линз и расстояния d между линзами чувствительны в инфракрасной области спектра, удовлетворяют условиям: 0,76≤(R1/R2)≤0,8; в частности в диапазоне спектра 8-14 мкм. 0,87≤(R3/R4= ...

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Номер записи: 4
03-02-2020 дата публикации

Телескопическая линза

Номер: RU0000195643U1
Автор: Василиса Викторовна Ежова, Лев Николаевич Андреев
Принадлежит: федеральное государственное автономное образовательное учреждение высшего образования &#34;Национальный исследовательский университет ИТМО&#34; (Университет ИТМО)

Предлагаемая полезная модель относится к оптическому приборостроению, а точнее к телескопическим оптическим системам небольшого увеличения.Предлагаемая телескопическая линза склеена из двух компонентов, выполненных из оптических материалов, у которых разность показателей преломления для средней длины волны не превышает 0,001, а разность коэффициентов средней дисперсии превышает 20.Первая выпуклая поверхность телескопической линзы выполнена асферической второго порядка с уравнением: у=2rz-(1-e)z, где r- радиус в вершине асферической поверхности; e- квадрат эксцентриситета поверхности, изменяющийся в пределах 0÷0,5.В такой телескопической линзе исправлены хроматические аберрации, астигматизм и сферические аберрации, что позволяет ее использовать в качестве наблюдательной оптической системы небольшого увеличения, а также для других целей в оптическом приборостроении. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 195 643 U1 (51) МПК G02B 23/00 (2006.01) G02B 3/04 (2006.01) G02B 13/18 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G02B 23/00 (2019.08); G02B 3/04 (2019.08); G02B 13/0025 (2019.08); G02B 13/18 (2019.08) (21)(22) Заявка: 2019132831, 15.10.2019 (24) Дата начала отсчета срока действия патента: 03.02.2020 Приоритет(ы): (22) Дата подачи заявки: 15.10.2019 (45) Опубликовано: 03.02.2020 Бюл. № 4 1 9 5 6 4 3 R U (54) ТЕЛЕСКОПИЧЕСКАЯ ЛИНЗА (57) Реферат: Предлагаемая полезная модель относится к оптическому приборостроению, а точнее к телескопическим оптическим системам небольшого увеличения. Предлагаемая телескопическая линза склеена из двух компонентов, выполненных из оптических материалов, у которых разность показателей преломления для средней длины волны не превышает 0,001, а разность коэффициентов средней дисперсии превышает 20. Первая выпуклая поверхность телескопической линзы выполнена асферической Стр.: 1 (56) Список документов, цитированных в отчете о поиске: RU 156864 U1, 20.11.2015. RU 148389 U1, 10. ...

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Номер записи: 5
26-01-2012 дата публикации

Image pickup lens and image pickup device using the same

Номер: US20120019706A1
Автор: Masatoshi Yamashita, Nami Nagamori, Takumi Iba
Принадлежит: Panasonic Corp

An image pickup lens capable of providing an angle of view of up to 70° or higher is provided. The image pickup lens can also be reduced in size and various aberrations associated with the lens can be corrected favorably, so that the image pickup lens is compatible with a high-pixel image pickup element. The image pickup lens 7 includes, in order from an object side to an image surface side: a first lens 1 that is a biconvex lens having positive power; a second lens 2 that has negative power and whose lens surface facing the image surface side is concave; a third lens 3 that is a meniscus lens having positive power and whose lens surface facing the image surface side is convex; and a fourth lens 4 that has negative power, whose lens surfaces are both aspherical and whose lens surface facing the image surface side is concave near an optical axis. The image pickup lens 7 satisfies the following conditional expressions (1) and (2), where f is the focal length of the overall optical system, Y′ is the maximum image height, and TL is the overall length of the optical system: 1.20< f/Y′ <1.35  (1) TL/Y′ <2.0  (2).

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Номер записи: 6
02-02-2012 дата публикации

Wide field of view lwir high speed imager

Номер: US20120026382A1
Автор: Eric M. Moskun, Lacy G. Cook
Принадлежит: Raytheon Co

Various embodiments provide an optical system including a first lens group having a plurality of lenses, the first lens group being configured to correct for an axial chromatic aberration; a second lens group having a least one lens, the second lens group being disposed adjacent the first lens group; and a third lens group having a plurality of lenses, the third lens group being configured to correct for a lateral chromatic aberration and field curvature, the third lens group being disposed adjacent the second lens group. The first, second and third lens groups are configured to provide a wide field of view greater than approximately 20 deg., and an f-number of less than approximately F/2 in a wavelength range between approximately 8 μm and approximately 12 μm.

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Номер записи: 7
09-02-2012 дата публикации

Fixed focal length lens having image stabilization function

Номер: US20120033300A1
Автор: Makoto Nakahara
Принадлежит: Canon Inc

A fixed focal length lens has a focal length of a whole system shorter than a back focus. The fixed focal length lens includes an aperture stop, and an image-stabilizing lens unit that moves in a direction including a component of a direction orthogonal to an optical axis to reduce an image blur. The conditions of 0.1<f/|fis|<0.5 and −0.35<Dis/DL<0.25 are met, where f is the focal length of the whole system, fis is a focal length of the image-stabilizing lens unit, Dis is a distance from the aperture stop to a surface farthest from the aperture stop of the image-stabilizing lens unit, and DL is a distance from a first surface closest to an object side to a final surface closest to an image side of the fixed focal length lens. A sign of the distance is positive in a direction from the object side to the image side.

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Номер записи: 8
08-03-2012 дата публикации

Dual field of view refractive optical system with external pupil and internal stabilization

Номер: US20120057223A1
Автор: Lacy G. Cook
Принадлежит: Raytheon Co

Various embodiments provide an optical system including a first lens group including a plurality of lenses, the first lens group being configured to correct for lateral chromatic aberration; and a second lens group including a plurality of lenses, the second lens group being configured to correct for axial chromatic aberration, the second lens group being disposed adjacent the first lens group. The optical system further includes a detector disposed behind the second lens group; a mechanism for switching a configuration of the optical system between a narrow field of view (NFOV) configuration and a wide field of view (WFOV) configuration; and a ray path steering system disposed in front of the first lens group, the ray path steering system comprising a pair of counter-rotating grisms configured to enhance a field of regard of the optical system. The optical system also includes a stabilization system configured to suppress image jitter, the stabilization system including a mechanism for decentering at least one lens in the first lens group or in the second lens group orthogonal to an optical axis of the optical system. A pupil of the optical system is located external to the first and second lens groups for location of a cold shield within a cryo-vac Dewar enclosing the detector.

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Номер записи: 9
29-03-2012 дата публикации

Lens And Applications Thereof

Номер: US20120075725A1
Автор: Donald Rosenberry, Jeremy Huddleston
Принадлежит: Individual

The present invention, in some embodiments, provides a low distortion singlet lens and optical imaging apparatus including the same.

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Номер записи: 10
29-03-2012 дата публикации

Optical system, and imaging apparatus incorporating the same

Номер: US20120075729A1
Автор: Ryosuke Uemura
Принадлежит: Individual

An imaging optical system has, in order from an object side to an image side, a first lens group, an aperture stop, a second lens group and a third lens group. A first lens, in said third lens group, is movable along an optical axis thereby implementing focusing from a focusing-on-infinity state to a focusing-on-a-near-distance state, with satisfaction of: | f (2+3)g /f 1g |<1  (1) −6.0<( R 3gr +R 3gf )/( R 3gr −R 3gf )<3.5  (2) where f (2+3)g is the combined focal length of the second lens group and the third lens group upon focusing on infinity; f 1g is the focal length of the first lens group; R 3gr is the axial radius of curvature of the surface of the most image side of a negative lens component of the third lens group; and R 3gf is the axial radius of curvature of the surface of the most object side of said lens component of the third lens group.

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Номер записи: 11
05-04-2012 дата публикации

Image Pickup Lens, Image Pickup Device Having Image Pickup Lens, And Portable Terminal Having Image Pickup Device

Номер: US20120081596A1
Автор: Elgo Sano, Hiroaki Tanaka, Keiji Matsusaka
Принадлежит: Konica Minolta Opto Inc

An image pickup lens comprises a first lens (L 1 ) having a positive refractive power, an aperture stop (s 3 ), a second lens (L 2 ) having a negative refractive power and having a concave surface facing the image side, a third lens (L 3 ) having a positive refractive power, and a fourth lens (L 4 ) having a negative refractive power and having a concave surface facing the image side. The image pickup lens satisfies predetermined formulae.

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Номер записи: 12
19-04-2012 дата публикации

Optical system with long focal length and optical apparatus having the same

Номер: US20120092779A1
Автор: Satoshi Maetaki
Принадлежит: Canon Inc

An optical system, in order from an object side to an image side, includes a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a third lens unit having a positive or negative refractive power. The first lens unit is configured by a first partial lens unit and a second partial lens unit each having a positive refractive power. The first partial lens unit is configured by a positive single lens, and has at least one aspherical surface. The second partial lens unit is configured by a positive lens and a negative lens, and has a diffraction optical surface of a diffraction optical element rotationally symmetric with reference to an optical axis direction. The second lens unit is a focus lens unit that is movable in the optical axis direction. And a paraxial lateral magnification βasph meets a predetermined condition.

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Номер записи: 13
24-05-2012 дата публикации

Optical imaging system

Номер: US20120127359A1
Автор: Chun-Shan Chen, Hsin-Hsuan Huang, Tsung-Han Tsai
Принадлежит: Largan Precision Co Ltd

An optical imaging system includes, in order from an object side to an image side, a first lens element with a positive refractive power, a second lens element, a third lens element, a fourth lens element with a positive refractive power having an aspheric surface and a fifth lens element with a negative refractive power. An image-side surface of the fifth lens element is concave, and at least one of two surfaces of the fifth lens element is aspheric. The relationship between a sum of thicknesses of all lens elements with refractive powers on an optical axis and a distance on the optical axis between an object-side surface of the first lens element and the image-side surface of the fifth lens element in the optical imaging system can effectively reduce the total length as well as the sensitivity of the optical imaging system while gaining superior resolution.

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Номер записи: 14
23-08-2012 дата публикации

Lens Unit for Infrared Camera and Infrared Camera Using the Same

Номер: US20120212805A1
Автор: Atsushi Koide, Fumiyoshi Nishimura
Принадлежит: Tamron Co Ltd

A lens unit for an infrared camera is provided with one or more infrared transmitting lenses; a lens barrel which houses the infrared transmitting lens via a lens holding frame; and an actuator for performing image fluctuation correction of an infrared transmitting lens serving as a correction lens using magnetic means to prevent image fluctuation of a photographed image. The lens holding frame for the infrared transmitting lens serve as the correction lens and includes a fixing opening for the infrared transmitting lens and a shielding wall standing in an optical axis direction on an outer periphery of the fixing opening for the lens, and a separating space is provided between the correction lens and the lens barrel.

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Номер записи: 15
23-08-2012 дата публикации

Infrared Lens Unit and Infrared Camera System Provided with the Infrared Lens Unit

Номер: US20120212806A1
Автор: Yukiko Shibata
Принадлежит: Tamron Co Ltd

An object of the present invention is to provide an infrared lens unit having a high optical quality and an infrared camera system provided with the infrared lens unit. An infrared lens unit according to the present invention to achieve the object is the infrared lens unit to be attached to an infrared camera-module characterized in comprising a data memory for storing lens data and an image focusing condition is controlled according to the data stored in the data memory and temperature data in the infrared lens unit.

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Номер записи: 16
23-08-2012 дата публикации

Infrared Lens

Номер: US20120212807A1
Автор: Kouji Kawaguchi
Принадлежит: Tamron Co Ltd

An infrared lens has three lens groups put in serial order from a position closer to an object, namely, the foremost or first group of lens pieces of positive refractivity, the succeeding or second group of lens pieces of negative refractivity, and the rearmost or third group of lens pieces of positive refractivity, and a substance of the second group of lens pieces having greater dispersive power than that or those of the first and third groups of lens pieces. The infrared lens assuredly retains sufficient brightness, namely, having an appropriate numerical aperture, but yet no longer suffers chromatic aberration for rays in a wavelength range of 10 μm or so in addition to fully correcting spherical aberration, comatic aberration, and curvature of field, thereby attaining clear and vivid focused images.

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Номер записи: 17
06-09-2012 дата публикации

Image Pickup Optical System and Image Pickup Apparatus Using the Same

Номер: US20120224091A1
Автор: Takuya Ohtsu
Принадлежит: Olympus Corp

An image pickup optical system made of five lenses, includes in order from an object side, an aperture stop, a first lens L 1 having a positive refracting power, a second lens L 2 having a negative refracting power, a third lens L 3 having a positive refracting power, a fourth lens L 4 having a positive refracting power, and a fifth lens L 5 having a negative refracting power. Moreover, an image pickup apparatus includes this image pickup optical system.

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Номер записи: 18
06-09-2012 дата публикации

Method for producing a mirror having at least two mirror surfaces, mirror of a projection exposure apparatus for microlithography, and projection exposure apparatus

Номер: US20120224186A1
Автор: Jochen Hetzler, Ralf Mueller, Wolfgang Singer
Принадлежит: CARL ZEISS SMT GMBH

A mirror (M) of a projection exposure apparatus for microlithography configured for structured exposure of a light-sensitive material and a method for producing a mirror (M). The mirror (M) has a substrate body (B), a first mirror surface (S) and a second mirror surface (S′). The first mirror surface (S) is formed on a first side (VS) of the substrate body (B). The second mirror surface (S′) is formed on a second side (RS) of the substrate body (B), the second side being different from the first side of the substrate body (B). The mirror (M) may be embodied, in particular, such that the substrate body (B) is produced from a glass ceramic material.

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Номер записи: 19
13-09-2012 дата публикации

Image pickup lens, image pickup device using same, and portable device equipped with image pickup device

Номер: US20120229695A1
Автор: Masatoshi Yamashita, Nami Sawada, Takumi Iba
Принадлежит: Panasonic Corp

An image pickup lens compatible with small high-pixel image pickup elements (e.g., from CCD and CMOS image sensors having a pixel pitch of 1.75 μm and a pixel count of 5 mega pixels to CCD and CMOS image sensors having a pixel pitch of 1.4 μm and a pixel count of 8 mega pixels) is provided. An image pickup lens 7 includes, in order from an object side to an image surface side: an aperture stop 5 , a first lens 1 having positive power; a second lens 2 that is a meniscus lens having negative power and whose lens surface facing the image surface side is concave; a third lens 3 that is a meniscus lens having positive power and whose lens surface facing the image surface side is convex; and a fourth lens 4 that has negative power, whose lens surfaces are both aspherical and whose lens surface facing the image surface side is concave near the optical axis. A diffractive optical element is formed on one of the lens surfaces of the first lens 1 or the second lens 2.

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Номер записи: 20
27-09-2012 дата публикации

Optical Lens Assembly for Image Capture

Номер: US20120243109A1
Автор: Ming-Ta Chou, Po-Lun Hsu, Tsung-Han Tsai
Принадлежит: Largan Precision Co Ltd

An optical lens assembly for image capture, in order from an object side to an image side, comprising: a first lens element with positive refractive power having a concave object-side surface and a convex image-side surface, a second lens element with negative refractive power having a concave object-side surfaces and a convex image-side surface, a third lens element with positive refractive power having bi-convex surface. Additionally, the optical lens assembly for image capture satisfies several desirable conditions. By such arrangements, the optical assembly for image capture can effectively correct the aberration and be used as a compact image pickup device for image taking.

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Номер записи: 21
15-11-2012 дата публикации

Image-forming optical system, exposure apparatus, and device producing method

Номер: US20120287413A1
Автор: Hideki Komatsuda
Принадлежит: Nikon Corp

There is provided a reflective image-forming optical system which is applicable to an exposure apparatus using, for example, EUV light and which is capable of increasing numerical aperture while enabling optical path separation of light fluxes. In a reflective imaging optical system ( 6 ) forming an image of a first plane ( 4 ) onto a second plane ( 7 ), the numerical aperture on a side of the second plane with respect to a first direction (X direction) on the second plane is greater than 1.1 times a numerical aperture on the side of the second plane with respect to a second direction (Y direction) crossing the first direction on the second plane. The reflecting imaging optical system has an aperture stop (AS) defining the numerical aperture on the side of the second plane, and the aperture stop has an elliptic-shaped opening of which size in a major axis direction (X direction) is greater than 1.1 times that in a minor axis direction (Y direction).

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Номер записи: 22
22-11-2012 дата публикации

Image capturing optical lens assembly

Номер: US20120293875A1
Автор: Hsin-Hsuan Huang, Tsung-Han Tsai
Принадлежит: Largan Precision Co Ltd

An image capturing optical lens assembly includes, in order from an object side to an image side, a first lens element with positive refractive power having a convex object-side surface and a concave image-side surface, a second lens element with negative refractive power, a third lens element with negative refractive power having a concave object-side surface and a convex image-side surface, and a fourth lens element with refractive power having a concave image-side surface. The object-side surface and the image-side surface of the fourth lens element are aspheric. Either or both of the object-side surface and the image-side surface have at least one inflection point formed thereon.

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Номер записи: 23
06-12-2012 дата публикации

Zoom Lens System, Imaging Device and Camera

Номер: US20120307366A1
Автор: Shinji Yamaguchi, Takakazu Bito, Yasunori TOCHI
Принадлежит: Panasonic Corp

A zoom lens system, in order from an object side to an image side, comprising: a first lens unit having positive optical power; a second lens unit having negative optical power; a third lens unit having positive optical power; and a subsequent lens unit, wherein in zooming from a wide-angle limit to a telephoto limit at the time of image taking, the first lens unit, the second lens unit, and the third lens unit are moved along an optical axis to perform magnification change, and wherein the third lens unit, in order from the object side to the image side, comprises: a third-a lens unit that, at the time of retracting, escapes along an axis different from that at the time of image taking; and a third-b lens unit that moves in a direction perpendicular to the optical axis to optically compensate image blur.

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Номер записи: 24
06-12-2012 дата публикации

Zoom Lens System, Imaging Device and Camera

Номер: US20120307367A1
Автор: Shinji Yamaguchi, Takakazu Bito, Yasunori TOCHI
Принадлежит: Panasonic Corp

A zoom lens system, in order from an object side to an image side, comprising: a first lens unit having positive optical power; a second lens unit having negative optical power; a third lens unit having positive optical power; and a subsequent lens unit, wherein in zooming from a wide-angle limit to a telephoto limit at the time of image taking, the first lens unit, the second lens unit, and the third lens unit are moved along an optical axis to perform magnification change, wherein the third lens unit has at least two air spaces, and the conditions: −4.9<f 1 /f 2 <−3.0 and Z=f T /f W >6.5 (f 1 and f 2 : composite focal lengths of the first and second lens units, f T and f W : focal lengths of the entire system at a telephoto limit and a wide-angle limit) are satisfied.

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Номер записи: 25
20-12-2012 дата публикации

Projection optical system and projector including the same

Номер: US20120320347A1
Автор: Eiji Morikuni, Makoto Otani
Принадлежит: Seiko Epson Corp

A projection optical system which, when projecting an image of an optical modulator onto a projection surface on an enlarged scale, differs the aspect ratio of the image of the optical modulator and the aspect ratio of the image projected onto the projection surface, and includes, in order from the projection surface, a first group which is an enlargement optical system; a second group includes an adjustment optical component with a surface rotationally asymmetrical to an optical axis, when defining at least one direction of the vertical direction and the horizontal direction of the optical modulator as an adjustment direction in which conversion adjustment using compression or extension is performed, the adjustment optical component having at least one optical system which differs in power between the adjustment direction and another direction; and a third group which has a correction optical component with a surface rotationally symmetrical to the optical axis.

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Номер записи: 26
27-12-2012 дата публикации

Zoom Lens System, Imaging Device and Camera

Номер: US20120327272A1
Автор: Takakazu Bito
Принадлежит: Panasonic Corp

A zoom lens system comprising: a positive first lens unit; a negative second lens unit; a positive third lens unit; a fourth lens unit; and an aperture diaphragm provided between the third lens unit and the fourth lens unit, wherein in zooming, the first to third lens units are moved along an optical axis to perform magnification change, the third lens unit includes two or more lens elements and one or more inter-lens-element air spaces, and the conditions: −7.0<f 1 /f 2 <−4.0 and f T /f W >9.0 (f 1 and f 2 : composite focal lengths of the first and second lens units, f W and f T : focal lengths of the entire system at a wide-angle limit and a telephoto limit) are satisfied.

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Номер записи: 27
03-01-2013 дата публикации

Non-planar focal surface lens assembly

Номер: US20130003196A1
Автор: Brian Kevin Guenter, Changyin Zhou, Neel Suresh Joshi
Принадлежит: Microsoft Corp

A lens assembly includes a plurality of component lens elements, and a fiber optic face plate having a back surface and a non-planar front surface. The plurality of component lens elements are configured to direct a focused image onto the non-planar front surface of the fiber optic face plate, and the fiber optic face plate is configured to transmit the focused image through the back surface.

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Номер записи: 28
17-01-2013 дата публикации

Imaging Lens, Imaging Optical Device, and Digital Equipment

Номер: US20130016278A1
Автор: Eigo Sano, Hiroaki Tanaka, Keiji Matsusaka
Принадлежит: Konica Minolta Advanced Layers Inc

An imaging lens system has, from an object side, at least one positive lens element convex to the object side, a negative lens element, and at least one lens element having an aspherical surface. The positive and negative lens elements are arranged next to each other. The formulae 0.1<Ton/Dopn<7, 0.1<(Rona−Ronb)/(Rona+Ronb)<1.5, and 0.3<Y′/TL<0.9 are fulfilled, where Ton represents the axial thickness of the most object-side negative lens element, Dopn represents the axial distance between the most object-side negative lens element and the positive lens element located to the object side of and next to that negative lens element, Rona represents the paraxial radius of curvature of the object-side surface of the most object-side negative lens element, Ronb represents the paraxial radius of curvature of the image-side surface of the most object-side negative lens element, Y′ represents the maximum image height, and TL represents the axial distance from the vertex of the most object-side lens surface to the image surface (in a case where a parallel-plane plate is included, the air equivalent length).

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Номер записи: 29
31-01-2013 дата публикации

Decentered optical system, and image display apparatus and imaging apparatus using the decentered optical system

Номер: US20130027784A1
Автор: Koichi Takahashi
Принадлежит: Olympus Corp

A decentered optical system includes a decentered prism which is located in opposition to the image display device, in which there are at least three optical surfaces mutually decentered with at least two thereof being in rotationally asymmetric shape, and which is filled inside with a medium having a refractive index of greater than 1, and a decentered lens which is interposed between the viewer's eyeball and the decentered prism, and is made up of mutually decentered two surfaces and filled inside with a medium having a refractive index of greater than 1, and in which on the image display device side with respect to an on-axis chief ray incident from the center of the image display device on the center of an exit pupil, there is a lens portion having positive power, and on an opposite side thereof, there is a lens portion having negative power.

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Номер записи: 30
07-02-2013 дата публикации

Imaging optical system, lens unit, and image projection apparatus

Номер: US20130033680A1
Автор: Kazuhiro Inoko
Принадлежит: Canon Inc

An imaging optical system includes a lens unit that includes a plurality of optical elements, and an optical path combining portion that includes a flat plate disposed so as to be inclined with respect to an optical axis of the lens unit, and the lens unit includes a correction portion that has a shape asymmetric with respect to the optical axis in a cross section that is parallel to both a normal of the flat plate and the optical axis.

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Номер записи: 31
14-02-2013 дата публикации

Photographing optical lens assembly

Номер: US20130038947A1
Автор: Ming-Ta Chou, Tsung-Han Tsai
Принадлежит: Largan Precision Co Ltd

A photographing optical lens assembly comprising, in order from an object side to an image side, a first lens element with positive refractive power, a second lens element with negative refractive power, a third lens element with refractive power, a fourth lens element with positive refractive power and a plastic fifth lens element is mentioned. The third lens element comprises a convex object-side surface and a concave image-side surface. The fourth lens element comprises a convex object-side surface and a convex image-side surface. The fifth lens element comprises a concave image-side surface. The surfaces of the third and fifth lens elements are aspheric. The fifth lens element comprises at least one inflection point. By adjusting the refractive power of the third lens element, and adjusting the total length of the photographing optical lens assembly, the total volume of the lens assembly is reduced, and the image quality is improved.

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Номер записи: 32
14-03-2013 дата публикации

Catadioptric system and image pickup apparatus equipped with same

Номер: US20130063650A1
Автор: Kazuhiko Kajiyama, Masayuki Suzuki, Yuji Katashiba
Принадлежит: Canon Inc

A catadioptric unit includes, in order from an object side to an image side, a first optical element including a first transmissive unit having positive refractive power disposed in the vicinity of an optical axis and, on the object side thereof, a first reflective unit disposed at an outer circumference relative to the first transmissive unit and having a reflective surface; and a second optical element including a second transmissive unit having negative refractive power in the vicinity of the optical axis and, on the image side thereof, a second reflective unit disposed at an outer circumference relative to the second transmissive unit and having a reflective surface. Radii of curvature of object-side and image-side surfaces of the second optical element, a thickness along the optical axis and a refractive index of a material of the second optical element are set to satisfy predetermined conditions.

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Номер записи: 33
28-03-2013 дата публикации

WAVELENGTH CONVERSION FILM

Номер: US20130074929A1
Автор: ARUGA Hiroshi, Shimoi Yasuko
Принадлежит: Asahi Glass Company, Limited

To provide a wavelength conversion film which is capable of maintaining an optical wavelength converting function for a long term as compared with conventional wavelength conversion films. 1. A wavelength conversion film comprising a single layered film consisting of a resin composition containing a thermoplastic resin , a wavelength converting material and a nickel(II) dialkyldithiocarbamate , or a laminated film having a wavelength converting layer consisting of the resin composition ,wherein the alkyl group of the nickel(II) dialkyldithiocarbamate is an ethyl group or a butyl group, andthe content of the nickel(II) dialkyldithiocarbamate is from 20 to 250 parts by mass per 100 parts by mass of the wavelength converting material.2. The wavelength conversion film according to claim 1 , wherein the thermoplastic resin is a fluororesin.3. The wavelength conversion film according to claim 1 , wherein the resin composition further contains an inorganic ultraviolet blocking material.4. The wavelength conversion film according to claim 1 , wherein the laminated film further has an ultraviolet blocking layer containing an inorganic ultraviolet blocking material.5. The wavelength conversion film according to claim 1 , wherein the wavelength converting material is a perylene colorant.6. The wavelength conversion film according to claim 1 , wherein the resin composition consists of only the thermoplastic resin claim 1 , the wavelength converting material and the nickel(II) dialkyldithiocarbamate.7. The wavelength conversion film according to claim 3 , wherein the resin composition consists of only the thermoplastic resin claim 3 , the wavelength converting material claim 3 , the nickel(II) dialkyldithiocarbamate and the inorganic ultraviolet blocking material.8. The wavelength conversion film according to claim 1 , wherein the content of the wavelength converting material is from 0.005 to 0.10 mass % per 100 mass % of the resin composition.9. The wavelength conversion film ...

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Номер записи: 34
25-04-2013 дата публикации

OPTICAL ELEMENT AND PRODUCTION METHOD OF THE SAME

Номер: US20130100522A1
Автор: Hirayama Hiroshi, TAKAHASHI Hironori
Принадлежит: Konica Minolta Opto, Inc.

Disclosed is an optical element for use in an optical apparatus having a light source which emits a light flux with a wavelength λ (350 nm≦λ≦450 nm), the optical element containing: a molded portion formed by molding a resin; and one or a plurality of anti-reflection layers formed on the molded portion, wherein at least one of the anti-reflection layers is made of SiO; and an elemental ratio r (r=y/x) designating an ratio of O to Si in the molecule of SiOsatisfies a requirement represented by Formula (1): 1.40≦r≦1.80. 14-. (canceled)5. An optical element for use in an optical apparatus having a light source which emits a light flux with a wavelength λ (350 nm≦λ450 nm) , the optical element comprising:a molded portion formed by molding resin;{'sub': x', 'y, 'one or a plurality of anti-reflection layers formed on the molded portion, wherein at least one of the anti-reflection layers is made of SiO; and'}{'sub': x', 'y, 'claim-text': {'br': None, '1.40≦r≦1.75. \u2003\u2003Formula (1)'}, 'an elemental ratio r (r=y/x) designating a ratio of O to Si in the molecule of SiOsatisfies a requirement represented by Formula (1)6. The optical element described in claim 5 , wherein the resin to form the molded portion is a cyclic olefin resin. This application is based on Japanese Patent Application No. 2008-257151 filed on Oct. 2, 2008 with Japan Patent Office, the entire content of which is hereby incorporated by reference.The present invention relates to an optical element and a production method thereof. In particular, the present invention relates to an optical element enabling to prevent variation of aberration and decrease of transparency and a production method of the optical element.Until now, glass has been generally used as a composition material of an optical element (mainly lens) from the viewpoint that glass has excellent optical characteristics and mechanical hardness. Miniaturization of an optical element has been required with the advance of miniaturization of an ...

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Номер записи: 35
16-05-2013 дата публикации

INFRARED OPTICAL LENS SYSTEM

Номер: US20130120832A1
Автор: LEE Byoung-guy
Принадлежит: SAMSUNG TECHWIN CO., LTD.

An infrared optical lens system including: a first lens which comprises a crystalline material; and a second lens which comprises an amorphous material and is formed by using molding processing, wherein a refractive index of the first lens is greater than that of the second lens, and the first lens and the second lens are disposed in the order from an object to an image. 1. An infrared optical lens system comprising:a first lens which comprises a crystalline material; anda second lens which comprises an amorphous material and is formed by using molding processing,wherein a refractive index of the first lens is greater than that of the second lens, andwherein the first lens and the second lens are disposed in the order from an object to an image.2. The infrared optical lens system of claim 1 , wherein a focal distance of the infrared optical lens system is in the range of about 50 mm to about 150 mm.3. The infrared optical lens system of claim 1 , wherein the first lens comprises at least one aspheric surface.4. The infrared optical lens system of claim 1 , wherein the first lens comprises an aspheric surface that faces the image.5. The infrared optical lens system of claim 1 , wherein the second lens comprises at least one aspheric surface.6. The infrared optical lens system of claim 1 , further comprising a third lens disposed next to a surface of the second lens which faces the image.7. The infrared optical lens system of claim 6 , wherein the third lens comprises an amorphous material.8. The infrared optical lens system of claim 1 , wherein a refractive index of the first lens is from about 3.2 to about 4.1.9. The infrared optical lens system of claim 8 , wherein a refractive index of the second lens is from about 2.45 to about 2.65.10. The infrared optical lens system of claim 1 , wherein a refractive index of the second lens is from about 2.45 to about 2.65.11. The infrared optical lens system of claim 1 , wherein the first lens has a positive refractive power ...

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Номер записи: 36
30-05-2013 дата публикации

Lens for Infrared Cameras

Номер: US20130135713A1
Автор: Kawaguchi Koji
Принадлежит: TAMRON CO., LTD.

This invention is directed to provide an infrared camera lens that is simple in lens configuration and has lens pieces including only spherical surfaces but no aspheric surfaces. The invention is also directed to provide an infrared camera lens of a design that facilitates and implements an airtight environment within the lens barrel because the foremost or first lens closest to the object stays still during focusing, and the entire length of the lens system is unchanged for focusing. The infrared camera lens comprises the foremost or first single spherical lens piece of positive refractivity, the succeeding or second single spherical lens piece of negative refractivity, and the third single spherical lens piece of positive refractivity. At least the second single spherical lens piece of negative refractivity or the third single spherical lens piece of positive refractivity is to be moved for focusing. 1. A lens suitable for infrared cameras , comprising the foremost or first single spherical lens piece of positive refractivity , the succeeding or second single spherical lens piece of negative refractivity , and the third single spherical lens piece of positive refractivity , at least the second single spherical lens piece of negative refractivity or the third single spherical lens piece of positive refractivity being to be moved for focusing.2. The lens suitable for infrared cameras according to claim 1 , wherein the second single spherical lens piece of negative refractivity alone is to be moved for focusing.3. The lens suitable for infrared cameras according to claim 1 , wherein the third single spherical lens piece of positive refractivity alone is to be moved for focusing.7. The lens suitable for infrared cameras according to claim 1 , wherein all the first to fourth lens pieces are made of germanium. The present invention relates to a lens for infrared cameras, and more particularly, to an internal focusing infrared camera lens with a single focal point that ...

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Номер записи: 37
30-05-2013 дата публикации

IMAGE PICKUP LENS FOR SOLID-STATE IMAGE PICKUP ELEMENT

Номер: US20130135754A1
Автор: HASHIMOTO Masaya, Ise Yoshio
Принадлежит: KANTATSU CO., LTD.

An image pickup lens includes a first lens having a positive refractive power with a convex surface facing the object side, a second lens having a negative refractive power with a concave surface facing an image side, a third lens of a meniscus shape having a convex surface facing the object side, a fourth lens of a meniscus shape having a positive refractive power with a convex surface facing the image side, and a fifth lens having a negative refractive power with a concave surface facing the image side, wherein the both surfaces of the fifth lens have an aspherical shape, and the curvature radius of the fourth lens satisfies conditional expression (13) below: 1. An image pickup lens for a solid-state image pickup element , consisting of , in the order from an object side:a first lens, which has a convex surface facing the object side on an optical axis and has a positive refractive power;a second lens, which has a concave surface facing an image side on the optical axis and has a negative refractive power;a third lens, which has a convex surface facing the object side on the optical axis and has a meniscus shape;a fourth lens, which has a convex surface facing the image side on the optical axis, has a positive refractive power, and has a meniscus shape; anda fifth lens, which has a concave surface facing the image side on the optical axis and has a negative refractive power;wherein the object-side surface and the image-side surface of the fifth lens have an aspherical shape that contains at least one inflection point from the center of the lens to the periphery thereof; and {'br': None, 'i': Подробнее

Номер записи: 38
30-05-2013 дата публикации

Image pickup lens for solid-state image pickup element

Номер: US20130135755A1
Автор: Masaya Hashimoto, Yoshio Ise
Принадлежит: Kantatsu Co Ltd

An image pickup lens includes a first lens having a positive refractive power with a convex surface facing the object side, a second lens having a negative refractive power with a concave surface facing an image side, a third lens having a negative refractive power with both surfaces formed from aspheric surface, a fourth lens of a meniscus shape having a positive refractive power with a convex surface facing the image side, and a fifth lens of a meniscus shape having a negative refractive power with a concave surface facing the image side, wherein the curvature radius of the fourth lens satisfies conditional expression (13) below: 1.4< r 7/ r 8<3.0  (13) where r7 is the curvature radius of the object-side surface of the fourth lens, and r8 is the curvature radius of the image-side surface of the fourth lens.

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Номер записи: 39
30-05-2013 дата публикации

IMAGE PICKUP LENS FOR SOLID-STATE IMAGE PICKUP ELEMENT

Номер: US20130135756A1
Автор: HASHIMOTO Masaya, Ise Yoshio
Принадлежит: KANTATSU CO., LTD.

Disclosed is a low-cost, compact image pickup lens for a solid-state image pickup element. The image pickup lens includes, in the order from an object side, a first lens L, which has a convex surface facing the object side on an optical axis and has a positive refractive power; a second lens L, which has a concave surface facing an image side on the optical axis and has a negative refractive power; a third lens L, which has a positive refractive power and has aspheric surfaces on the object side and the image side; a fourth lens L, which has a convex surface facing the image side on the optical axis, has a positive refractive power, and has a meniscus shape; and a fifth lens L, which has a concave surface facing the image side on the optical axis, has a negative refractive power, and has a meniscus shape. 1. An image pickup lens for a solid-state image pickup element , consisting of , in the order from an object side:a first lens, which has a convex surface facing the object side on an optical axis and has a positive refractive power;a second lens, which has a concave surface facing an image side on the optical axis and has a negative refractive power;a third lens, which has a positive refractive power and has aspheric surfaces on the object side and the image side;a fourth lens, which has a convex surface facing the image side on the optical axis, has a positive refractive power, and has a meniscus shape; anda fifth lens, which has a concave surface facing the image side on the optical axis, has a negative refractive power, and has a meniscus shape.3. The image pickup lens according to claim 1 , wherein the first lens claim 1 , the second lens claim 1 , the third lens claim 1 , the fourth lens claim 1 , and the fifth lens are so-called plastic lenses that have at least one aspherical surface and are made of a resin material.4. The image pickup lens according to claim 1 , wherein an aperture stop is positioned on the object side of the first lens.5. The image pickup ...

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Номер записи: 40
06-06-2013 дата публикации

SINGLE FOCAL LENGTH LENS SYSTEM, INTERCHANGEABLE LENS APPARATUS AND CAMERA SYSTEM

Номер: US20130141629A1
Автор: MIYAZAKI Kyoichi, YAMANAKA Takao, YOSHINAGA Shunichiro, ZAITSU Keiichi
Принадлежит: Panasonic Corporation

A single focal length lens system comprising a front lens unit, an aperture diaphragm, and a rear lens unit, wherein the front lens unit is composed of three or less lenses including a negative lens located closest to the object side and a positive lens located on the image side relative to the negative lens, and does not move along an axis in focusing, the rear lens unit includes a focusing lens unit moving along the axis and a fixed lens unit not moving along the axis in focusing, and the conditions: 0.4 Подробнее

Номер записи: 41
06-06-2013 дата публикации

Projection lens system with long back focal length

Номер: US20130141804A1
Автор: An-Tze Lee, Fang-Ying Peng, Hai-Jo Huang, Sheng-An Wang, Xiao-Na Liu
Принадлежит: Hon Hai Precision Industry Co Ltd, Premier Image Technology China Ltd

A projection lens system, in the order from a magnified side to a reduced side, includes a first lens group with negative refraction power and a second lens group with positive refraction power. The projection lens system satisfies the formulas: −1.55<F1/F2<−1.12; wherein F1 is the effective focal length of the first lens group, and F2 is the effective focal length of the second lens group.

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Номер записи: 42
13-06-2013 дата публикации

Method for designing and method for manufacturing diffraction-grating lens

Номер: US20130145608A1
Автор: Takamasa Ando, Tsuguhiro Korenaga
Принадлежит: Panasonic Corp

A method for designing a diffraction grating lens of the present invention is a method for designing a diffraction grating lens having a diffraction grating composed of a plurality of diffraction zones, the method including the steps of: (a) determining widths of the plurality of diffraction zones; and (b) determining an aspherical coefficient of a diffraction surface on which the diffraction grating is provided while the determined widths of the plurality of diffraction zones are fixed, after the step (a).

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Номер записи: 43
13-06-2013 дата публикации

SINGLE FOCAL LENGTH LENS SYSTEM, INTERCHANGEABLE LENS APPARATUS AND CAMERA SYSTEM

Номер: US20130148006A1
Автор: MIYAZAKI Kyoichi, YAMANAKA Takao, YOSHINAGA Shunichiro, ZAITSU Keiichi
Принадлежит: Panasonic Corporation

A single focal length lens system comprising: at least a front lens unit having positive or negative power, and being fixed in focusing; a focusing lens unit having positive power, and moving along an optical axis in focusing; and a rear lens unit having negative power, and being fixed in focusing, wherein the focusing lens unit includes: a cemented lens of a negative lens and a positive lens; and a positive single lens located on the image side relative to the cemented lens and having an aspheric surface, the rear lens unit is composed of one single lens, and the condition: −0.5 Подробнее

Номер записи: 44
20-06-2013 дата публикации

Zoom lens system

Номер: US20130155511A1
Автор: An-Tze Lee, Fang-Ying Peng, Hai-Jo Huang, Sheng-An Wang, Xiao-Na Liu
Принадлежит: Hon Hai Precision Industry Co Ltd, Hongfujin Precision Industry Shenzhen Co Ltd

A zoom lens system includes, in order from the object side to the image side, a first, a second, and a third lens groups. The first lens group includes, in order from the object side to the image side, a first and a second lenses. The second lens group is capable of floating to realize an image stabilizating function and includes, in order from the object side to the image side, a third to sixth lenses. The zoom lens system satisfies various formulas, including 0.3<d2a/D2<0.4, wherein d2a is the distance between image-side surfaces of the fifth lens and of the sixth lens, and D2 is a width of the second lens group along an optical axis of the zoom lens system.

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Номер записи: 45
04-07-2013 дата публикации

Imaging Lens, Imaging Device and Portable Terminal

Номер: US20130169852A1
Автор: Eigo Sano, Yuichi Ozaki
Принадлежит: Konica Minolta Opto Inc

Provided is a small-sized five-element image pickup lens which ensures a sufficient lens speed of about F2 and exhibits various aberrations being excellently corrected. The image pickup lens is composed of, in order from the object side, a first lens with a positive refractive power, including a convex surface facing the object side; a second lens with a negative refractive power, including a concave surface facing the image side; a third lens with a positive or negative refractive power; a fourth lens with a positive refractive power, including a convex surface facing the image side; and a fifth lens with a negative refractive power, including a concave surface facing the image side. The image-side surface of the fifth lens has an aspheric shape, and includes an inflection point at a position excluding an intersection point with the optical axis.

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Номер записи: 46
11-07-2013 дата публикации

Imaging Lens, Imaging Device and Portable Terminal

Номер: US20130176469A1
Автор: Eigo Sano, Yuichi Ozaki
Принадлежит: Konica Minolta Opto Inc

Provided is a small-sized five-element image pickup lens which ensures a sufficient lens speed of about F2 and exhibits various aberrations being excellently corrected. The image pickup lens is composed of, in order from the object side, a first lens with a positive refractive power, including a convex surface facing the object side; a second lens with a negative refractive power, including a concave surface facing the image side; a third lens with a positive or negative refractive power; a fourth lens with a positive refractive power, including a convex surface facing the image side; and a fifth lens with a negative refractive power, including a concave surface facing the image side. The image-side surface of the fifth lens has an aspheric shape, and includes an inflection point at a position excluding an intersection point with the optical axis.

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Номер записи: 47
18-07-2013 дата публикации

Infrared Fixed-Focus Lens

Номер: US20130182316A1
Автор: FUSE Shingo
Принадлежит: TAMRON CO., LTD.

The invention provides an infrared fixed-focus lens of which component lens pieces are made of germanium featured by low chromatic dispersion, and have no surface processed to serve as diffraction optics. The infrared fixed-focus lens comprises the first lens piece disposed closer to an object and of negative refractivity, and the second lens piece disposed closer to the image plane and of positive refractivity. Both the first and second lens pieces are made of germanium. 1. An infrared fixed-focus lens , comprisingthe first lens piece disposed closer to an object and of negative refractivity, andthe second lens piece disposed closer to the image plane and of positive refractivity, both the first and second lens pieces being made of germanium.2. The infrared fixed-focus lens according to claim 1 , wherein the full angle of field ranges from 24 to 55 degrees.3. The infrared fixed-focus lens according to claim 1 , wherein the first lens piece has its front surface closer to the object shaped in convexity and exhibits negative refractive power claim 1 , and the second lens piece has its rear surface closer to the image plane shaped in convexity and exhibits positive refractive power. The present invention relates to an infrared fixed-focus lens, and more particularly, to an infrared fixed-focus lens adopted to suppress spherical aberration at the wide-angle end and suitable to infrared thermography optical systems and surveillance cameras. The term ‘infrared’ used herein means radiations including middle infrared rays of wavelength ranging from 3000 to 5000 nm and far infrared rays of wavelength ranging from 8000 to 14000 nm.As an example of the prior art infrared lenses capable of producing excellent images and sturdy enough to endure severe environments, an infrared optical system suitable for use in surveillance cameras has been proposed which is compatible with infrared rays through far infrared rays, namely, with a wavelength range from 3 μm to 14 μm, and is of ...

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Номер записи: 48
18-07-2013 дата публикации

Objective Lens for Optical Pickup Device, and Optical Pickup Device

Номер: US20130182337A1
Автор: Tateyama Kiyono
Принадлежит: Konica Minolta Advanced Layers, Inc.

An objective lens for an optical pickup device is characterized in that compatibility of three types of optical discs, which are a BD, a DVD, and a CD, may be realized by a common objective lens, and a flare can be created by providing an over-spherical aberration when a third optical disc is used from a size relationship between a pitch on a central region side and a pitch on an intermediate region side across a boundary and a relationship of a direction of a step in the base structures superimposed in a central region and an intermediate region of the objective lens. 120-. (canceled)2224. The objective lens according to claim 21 , wherein claim 21 , when a width of an annular zone of the second base structure closest to the boundary is represented by ΔT and a width of an annular zone of the fourth base structure closest to the boundary is represented by ΔT claim 21 , anda width of the annular zone of each of the first base structure, the second base structure, the third base structure, and the fourth base structure is with the positive sign when the step of the base structure faces opposite to the optical axis and with the negative sign when the step of the base structure faces to the optical axis, {'br': None, 'i': T', '−ΔT, 'Δ42<0\u2003\u2003(2).'}, 'a following equation is satisfied23. The objective lens according to claim 21 , wherein a step of the second base structure in a position closest to the boundary faces to the optical axis.24. The objective lens according to claim 21 , wherein a step of the second base structure in a position closest to the boundary and a step of the fourth base structure in a position closest to the boundary face to a same direction.2513. The objective lens according to claim 21 , wherein a pitch P of the first base structure in a position closest to the boundary and a pitch P of the third base structure in a position closest to the boundary satisfy a following equation (3) in consideration of the sign of the pitch:{'br': None, 'i': ...

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Номер записи: 49
08-08-2013 дата публикации

Camera for recording aerial images from aircraft

Номер: US20130201374A1
Автор: Dirk Döring, Holger Stoldt, Jörn Hildebrandt, Martin Timm, Martin Welzenbach
Принадлежит: HEXAGON TECHNOLOGY CENTER GMBH

A camera, more particularly for recording aerial images from aircraft, comprising a lens and at least one digital, areal image sensor fixed on a carrier element and having a predetermined pixel size, which image sensor has a curvature, more particularly caused by the fixing on the carrier element within a specific tolerance range. The lens at least partly brings about optical compensation of the curvature of the digital areal image sensor.

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Номер записи: 50
15-08-2013 дата публикации

LWIR IMAGING LENS, IMAGE CAPTURING SYSTEM HAVING THE SAME, AND ASSOCIATED METHODS

Номер: US20130208353A1
Автор: Huddleston Jeremy
Принадлежит:

An imaging lens for use with an operational waveband over any subset of 7.5-13.5 μm may include a first optical element of a first high-index material and a second optical element of a second high-index material, that may have a refractive index greater than 2.2 in the operational waveband, an absorption per mm of less than 75% in the operational waveband, and an absorption per mm of greater than 75% in a visible waveband of 400-650 nm. Optically powered surfaces of the imaging lens may include a sag across their respective clear apertures that are less than 10% of a largest clear aperture of the imaging lens. Respective maximum peak to peak thicknesses of the first and second optical elements may be similar in size, for example within 15 percent of each other. Ratios of maximum peak to peak thickness to clear aperture and, separately, to sag are also provided. 1. An imaging lens for use with an operational waveband over any subset of 7.5-13.5 μm , the imaging lens comprising:a first optical element of a first high-index material, the first optical element having an object side surface and an image side surface; anda second optical element of a second high-index material, the second optical element having an object side surface and an image side surface, the object side surface of the second optical element facing the image side surface of the first optical element, whereinat least one of the object side and the image side surfaces of each of the first and second optical elements are optically powered surfaces, each optically powered surface having a sag across a respective clear aperture that is less than 10% of a largest clear aperture of the imaging lens, andthe first and second high-index materials having a refractive index greater than 2.2 in the operational waveband, an absorption per mm of thickness less than 75% in the operational waveband, and an absorption per mm of thickness greater than 75% in a visible waveband of 400-650 nm.2. The imaging lens as ...

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Номер записи: 51
05-09-2013 дата публикации

Multiple Spectral Single Image Sighting System Using Single Objective Lens Set

Номер: US20130229561A1
Автор: Bob Lee Brigance, Danny Robert Schoening, Hugh Robert Bond, Jose Joaquin Aizpuru
Принадлежит: Optex Systems Inc

A sighting system is disclosed, comprising a housing with small upper minor mounted in its upper center, redirecting light from a single objective lens set, and a larger lower mirror mounted coaxially relative to the lens set and upper minor, both mirrors set at 45° and redirecting light at 90° angles to the lens set. The smaller mirror is positioned closer than the lower minor to the lens set. A night camera system is used for receiving an image through the lens set redirected by the lower mirror and amplified through an intensifier before transmission to a video display monitor(s). A day camera system receiving the image from the lens set redirected by the smaller minor transmits the image to the monitor(s) for separate display of the image, enabling simultaneous capture of the optimum amount of light by each camera, maximizing the housing's diametrical space to receive incoming light.

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Номер записи: 52
05-09-2013 дата публикации

OBLIQUE PROJECTION OPTICAL SYSTEM AND PROJECTION TYPE DISPLAY APPARATUS USING THE SAME

Номер: US20130229633A1
Автор: HIRATA Koji, OGURA Naoyuki, YATSU Masahiko
Принадлежит: Hitachi Consumer Electronics Co., Ltd.

A projection type display apparatus including an oblique projection optical system having a plurality of lenses is disclosed. A lens nearest to a projection screen has a vertical effective image area through which a light flux passes. The lens is arranged at a position not including an optical axis shared by the largest number of lenses among the plurality of lenses. A flat mirror for returning the optical path is arranged between the particular lens and the projection screen at a predetermined angle to the optical axis. An enlarged image obtained by the light flux returned by the flat mirror is formed toward a display screen. 142.-. (canceled)43. A projection type display apparatus comprising:a group of lenses consisting of a plurality of lenses for enlarging an image displayed on a display screen of a display device and projecting an enlarged image on a projection screen,wherein the group of lenses comprises a first lens arranged at a position optically nearest to the projection screen, andwherein the first lens has an effective image area through which a light flux of the image is passed and has such a shape that a portion which does not include the effective image area is truncated.44. The projection type display apparatus according to claim 43 ,wherein the effective image area through which the light flux of the image is passed does not include an optical axis shared by a plurality of lenses which do not include at least the first lens among the group of lenses, andwherein the shape of the first lens has such a shape that a portion which does not include the optical axis of the first lens is truncated.45. The projection type display apparatus according to claim 43 , wherein the first lens has a shape asymmetric about the optical axis.46. The projection type display apparatus according to claim 43 , wherein claim 43 , assuming that L is an interval between the first lens and the projection screen and D is a diagonal length of the projection screen claim 43 , a ...

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Номер записи: 53
05-09-2013 дата публикации

Graded index metamaterial lens

Номер: US20130229704A1
Автор: Igor I. Smolyaninov
Принадлежит: BAE Systems Information and Electronic Systems Integration Inc

A lens with a graded index of refraction is presented. The lens is formed out of a sheet of material having a uniform thickness with a top surface and a bottom surface. Elongated openings are formed in the top surface extending downwardly to the bottom surface. Material of the elongated sheet is left between adjacent openings. A width of the material between adjacent openings is less than a wavelength of electromagnet energy the lens is configured to refract. The density and distribution openings varies across the sheet of material so that the refractive index of the lens varies across the sheet of material.

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Номер записи: 54
12-09-2013 дата публикации

FISH EYE LENS SYSTEM AND PHOTOGRAPHING APPARATUS INCLUDING THE SAME

Номер: US20130235467A1
Автор: HEU Min
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A fish eye lens system and a photographing apparatus including the same, the fish eye lens system including, in an order from an object side to an image side: a first lens group having a negative refractive power; an aperture stop; and a second lens group having a positive refractive power, wherein the first lens group includes, in the order from the object side to the image side, a (1-A)-th lens group having a negative refractive power, a (1-B)-th lens group having a negative refractive power, and a (1-C)-th lens group including at least one positive lens, and wherein the (1-B)-th lens group is moved to perform focusing. 1. A fish eye lens system comprising , in an order from an object side to an image side:a first lens group having a negative refractive power;an aperture stop; anda second lens group having a positive refractive power,wherein the first lens group comprises, in the order from the object side to the image side, a (1-A)-th lens group having a negative refractive power, a (1-B)-th lens group having a negative refractive power, and a (1-C)-th lens group comprising at least one positive lens, andwherein the (1-B)-th lens group is moved to perform focusing.2. The fish eye lens system of claim 1 , wherein the (1-A)-th lens group comprises a lens having a negative refractive power.5. The fish eye lens system of claim 4 , wherein the (1-B)-th lens group comprises a lens having a negative refractive power.6. The fish eye lens system of claim 1 , wherein the second lens group comprises at least one aspherical lens.7. The fish eye lens system of claim 1 , wherein the distance between the first lens group and the second lens group is reduced during zooming from a wide angle position to a telephoto position.8. The fish eye lens system of claim 7 , wherein claim 7 , when the fish eye lens system performs zooming claim 7 , the (1-A)-th lens group claim 7 , the (1-B)-th lens group claim 7 , and the (1-C)-th lens group are moved simultaneously.9. The fish eye lens ...

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Номер записи: 55
12-09-2013 дата публикации

ASPHERIC SURFACE MEASURING METHOD, ASPHERIC SURFACE MEASURING APPARATUS, OPTICAL ELEMENT PRODUCING APPARATUS AND OPTICAL ELEMENT

Номер: US20130235472A1
Автор: Furukawa Yasunori, MAEDA Yoshiki, Osaki Yumiko
Принадлежит: CANON KABUSHIKI KAISHA

The method includes: calculating positional and angular magnification distributions of rays reflected by a reference aspheric surface on a light-receiving sensor and on a sensor conjugate surface; measuring a first wavefront of a reference light on the sensor; and calculating a second wavefront of the reference light on the sensor based on a parameter of an optical system. The method includes: moving at least two movable elements for calibration such that a difference between rotationally symmetric components of the first and second wavefronts becomes small; measuring, after the calibration, a third wavefront of the reference light on the sensor; measuring, after the calibration, a fourth wavefront of the measurement light on the sensor; and calculating the profile of the measurement object aspheric surface by using the third and fourth wavefronts, the positional and angular magnification distributions, and the profile of the reference aspheric surface. 1. An aspheric surface measuring method for measuring profile of a measurement object aspheric surface by using output from a light-receiving sensor to which a measurement light projected onto and reflected by the measurement object aspheric surface is introduced through an optical system , the method comprising:a step of providing a reference aspheric surface whose profile has been measured;a step of calculating (a) a positional magnification distribution showing a positional relationship of rays of a reference light, which is projected onto and reflected by the reference aspheric surface and is introduced to the light-receiving sensor through the optical system, between positions on the light-receiving sensor and on a sensor conjugate surface having a conjugate relationship with the light-receiving sensor provided by the optical system and (b) an angular magnification distribution showing an angular relationship of the rays of the reference light between angles on the light-receiving sensor and on the sensor ...

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Номер записи: 56
26-09-2013 дата публикации

Optical Device, Wafer-Scale Package for One Such Optical Device and Corresponding Method

Номер: US20130249034A1
Автор: Luc Andre
Принадлежит: Commissariat a lEnergie Atomique et aux Energies Alternatives CEA

The invention relates to an optical device produced by cutting a wafer-scale package comprising at least one optical module formed from a substrate ( 1 ) pierced with a plurality of through-holes ( 2 ) and optical elements disposed in the holes. According to the invention, at least one of the holes receives two lenses ( 3, 4 ) made from at least one polymer material transparent in the 400 nm-700 nm range, each of the lenses being defined by an external diopter and an internal diopter. The invention is characterised in that a space is formed between the internal diopters of two lenses and in that the substrate contains no polymer material between two adjacent through-holes.

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Номер записи: 57
26-09-2013 дата публикации

PROJECTION OBJECTIVE LENS SYSTEM

Номер: US20130250434A1
Автор: Zhu Lirong
Принадлежит: SHANGHAI MICRO ELECTRONICS EQUIPMENT CO., LTD.

A projection objective lens system includes from an object plane to an image plane: a first lens group (S) with a positive refractive power; a second lens group (S) with a negative refractive power; a third lens group (S) with a positive refractive power; a fourth lens group (S) with a negative refractive power; and a fifth lens group (S) with a positive refractive power being divided into two sub-lens groups. An aperture stop (AS) is provided between the two sub-lens groups. The following conditions are met: 0.12<|L/f|<0.4, and ΔR/R<1%, wherein, f is an effective focal length of the system, L is a distance between the object and image planes, ΔR represents a difference between radii at the aperture stop of a marginal field beam bundle and a central field beam bundle, and R represents a radius at the aperture stop of a central field beam bundle. 1. A projection objective lens system comprising , from an object plane to an image plane:a first lens group having a positive refractive power;a second lens group having a negative refractive power;a third lens group having a positive refractive power;a fourth lens group having a negative refractive power;a fifth lens group having a positive refractive power and including a first sub-lens group and a second sub-lens group; andan aperture stop positioned between the first sub-lens group and the second sub-lens group;wherein the projection objective lens system includes at least two types of optical materials including high refractive index materials having a refractive index of greater than 1.6 at a working wavelength and low refractive index materials having a refractive index of smaller than 1.6 at a working wavelength;wherein all lenses of the first sub-lens group are positive lenses formed of low refractive index materials;wherein the second sub-lens group includes a negative lens which has an aspheric rear surface and is formed of a high refractive index material; and {'br': None, 'i': 'R/R', 'Δ<1%,'}, 'wherein the ...

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Номер записи: 58
26-09-2013 дата публикации

IMAGING LENS SYSTEM

Номер: US20130250439A1
Автор: CHEN Chun-Shan
Принадлежит: LARGAN PRECISION CO., LTD.

This invention provides an imaging lens system including, in order from an object side to an image side: a first lens with positive refractive power having a convex object-side surface; a second lens with negative refractive power; a third lens having a concave image-side surface; a fourth lens with positive refractive power; a fifth lens with negative refractive power having a concave image-side surface, at least one surface thereof having at least one inflection point; and an aperture stop disposed between an imaged object and the third lens. The on-axis spacing between the first lens and second lens is T12, the focal length of the imaging lens system is f, and they satisfy the relation: 0.5<(T12/f)×100<15. 1. An imaging lens system including , in order from an object side to an image side:a first lens element with positive refractive power having a convex object-side surface;a second lens element with negative refractive power having a convex object-side surface and a concave image-side surface;a third lens element;a fourth lens element having a convex image-side surface; anda fifth lens element with negative refractive power having an object-side surface and a concave image-side surface, the object-side and image-side surfaces thereof being aspheric, at least one surface thereof being provided with at least one inflection point;wherein the lens elements with refractive power are the first, second, third, fourth and fifth lens elements; an Abbe number of the first lens element is V1, an Abbe number of the second lens element is V2, and the following relation is satisfied: V1−V2>20.2. The imaging lens system according to claim 1 , wherein the imaging lens system further comprises a stop disposed between an imaged object and the first lens element.3. The imaging lens system according to claim 2 , wherein the fourth lens element has a concave object-side surface.4. The imaging lens system according to claim 1 , wherein the fourth lens element has positive refractive ...

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Номер записи: 59
03-10-2013 дата публикации

IMAGING APPARATUS

Номер: US20130258490A1
Автор: Ishihara Keiichiro
Принадлежит: CANON KABUSHIKI KAISHA

Provided is an imaging apparatus, including: an imaging optical system including a plurality of lenses; and an image plane which is disposed on an image side of the imaging optical system and is curved so that a concave surface thereof faces an object side of the imaging optical system. The imaging optical system includes an aperture stop. In the imaging optical system, a lens closer to the object side than the aperture stop and a lens closer to the image side than the aperture stop have different positive powers. A focal length of the imaging optical system is substantially equal to a distance from an exit pupil of the imaging optical system to the image plane. A radius of curvature of the image plane is substantially equal to the focal length of the imaging optical system. 1. An imaging apparatus , comprising:an imaging optical system including a plurality of lenses; andan image plane which is disposed on an image side of the imaging optical system and is curved so that a concave surface thereof faces an object side of the imaging optical system, wherein:the imaging optical system includes an aperture stop;a lens disposed in the object side of the aperture stop in the imaging optical system and a lens disposed in the image side of the aperture stop in the imaging optical system have different positive powers;a focal length of the imaging optical system is substantially equal to a distance from an exit pupil of the imaging optical system to the image plane; anda radius of curvature of the image plane is substantially equal to the focal length of the imaging optical system.2. An imaging apparatus according to claim 1 , wherein the imaging optical system includes a wave front control element disposed close to the aperture stop.3. An imaging apparatus according to claim 1 , wherein:the imaging optical system includes a first lens and a second lens adjacent to each other;the aperture stop is disposed between the first lens and the second lens;of the first lens and the ...

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Номер записи: 60
03-10-2013 дата публикации

IMAGING LENS

Номер: US20130258500A1
Автор: Matsuoka Kazuo, SUZUKI Hisanori
Принадлежит: KANTATSU CO., LTD.

A compact imaging lens suitable for a high pixel density image pickup device which properly corrects chromatic aberration and other types of aberrations and ensures high image quality, low f-number, and low cost. A first lens, second lens, third lens, fourth lens, and fifth lens are arranged in order from the object side and both sides of all the lenses are aspheric surfaces and a diffractive optical surface with a chromatic aberration correction function is formed on one of the surfaces from the object side surface of the first lens to the object side surface of the second lens and on one of the surfaces from the object side surface of the third lens to the object side surface of the fifth lens. All the lenses are made of a plastic material. 1. An imaging lens for an image pickup device , comprising:a first lens, a second lens, a third lens, a fourth lens, and a fifth lens being arranged in order from an object side,wherein both sides of all the lenses are aspheric surfaces;wherein a diffractive optical surface with a chromatic aberration correction function is formed on one of surfaces from an object side surface of the first lens to an object side surface of the second lens and one of surfaces from an object side surface of the third lens to an object side surface of the fifth lens; andwherein all the lenses are made of a plastic material.2. The imaging lens according to claim 1 ,wherein the first lens is a biconvex lens near an optical axis, the second lens is a lens with negative refractive power, the third lens is a meniscus lens with positive refractive power having a concave surface on the object side near the optical axis, the fourth lens is a meniscus lens with positive refractive power having a concave surface on the object side near the optical axis, and the fifth lens is a lens with negative refractive power having a convex surface on the object side near the optical axis; andwherein an aperture stop is located on the object side surface of the first ...

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Номер записи: 61
17-10-2013 дата публикации

SUPER WIDE ANGLE LENS ARRANGEMENT FOR INFRARED APPLICATIONS

Номер: US20130271852A1
Автор: Schuster Norbert
Принадлежит:

The invention relates to high resolution, super wide angle optical assemblies for IR imaging. More particularly, a wide-angle optical assembly for an IR camera is described, comprising a lens system consisting of an object-side lens () and an image-side lens (), and an aperture stop () on the object-side of the assembly, wherein: the object-side lens () and the image-side lens () are positive meniscus lenses; all centers of vertex radii of the lens surfaces are oriented towards the object-side, defining for each lens a concave surface and a convex surface; the thickness () of the object-side lens () is larger than 0.60 EFL; the thickness () of the image-side lens () is between 0.30 EFL and 0.70 EFL; 0.95 Подробнее

Номер записи: 62
24-10-2013 дата публикации

Wide Angle Lens, Imaging Optical Device and Digital Equipment

Номер: US20130278714A1
Автор: HIROSE Masatoshi
Принадлежит:

A wide angle lens, which forms an image on an image pickup device having a curved imaging surface, has a whole angle of view of 120° or more and comprises a first lens, a second lens and a third lens in this order from an object side. The first lens is a meniscus lens having a convex surface facing the object side, the second lens has a positive power and the third lens has a concave surface facing an image side. The first, the second and the third lenses respectively have at least one aspherical surface. 19-. (canceled)10. A wide angle lens system that forms an image on an image pickup device having a curved imaging surface and has a total angle of view of not less than 120° , comprising , in order from an object side:a first lens element that is a meniscus lens element convex to the object side and has at least one aspherical surface;a second lens element that has at least one aspherical surface and has a positive optical power; anda third lens element that has at least one aspherical surface and is concave to an image surface side.11. The wide angle lens system according to claim 10 , wherein a conditional formula (1) or (2) below is satisfied:{'br': None, 'i': f', '/f<−, '30.2\u2003\u2003(1)'}{'br': None, 'i': f', '/f>, '31.0\u2003\u2003(2)'}wheref3 represents a focal length of the third lens element, andf represents a focal length of the entire lens system.12. The wide angle lens system according to claim 10 , wherein a conditional formula (3) or (4) below is satisfied:{'br': None, 'i': f', 'f, '1/23<−1.5\u2003\u2003(3)'}{'br': None, 'i': f', 'f, '1/23>8.0\u2003\u2003(4)'}wheref1 represents a focal length of the first lens element, andf23 represents a composite focal length of the second lens element and the third lens element.13. The wide angle lens system according to claim 10 , wherein the second lens element is a cemented lens element formed by cementing different materials together.14. The wide angle lens system according to claim 10 , wherein a ...

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Номер записи: 63
24-10-2013 дата публикации

MINIATURE LENS

Номер: US20130279023A1
Автор: Chen Yuan-Chen
Принадлежит:

A miniature lens includes an aperture, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens in order along an optical axis from an object side to an image side. The first lens is a meniscus lens having a positive refractive power, and a convex side thereof faces the object side. The second lens is a biconvex lens having a positive refractive power. The third lens is a meniscus lens having a negative refractive power, and a convex side thereof faces the object side. The fourth lens has a positive refractive power. The fifth lens has a negative refractive power. All the lenses respectively have at least an aspheric side. 1. A miniature lens , in order along an optical axis from an object side to an image side , comprising:an aperture;a first lens, which is a meniscus lens having a positive refractive power, and a convex side thereof faces the object side, wherein at least a side of the first lens is an aspheric side;a second lens, which is a biconvex lens having a positive refractive power, wherein at least a side of the second lens is an aspheric side;a third lens, which is a meniscus lens having a negative refractive power, and a convex side thereof faces the object side, wherein at least a side of the third lens is an aspheric side;a fourth lens having a positive refractive power, wherein at least a side of the fourth lens is an aspheric side; anda fifth lens having a negative refractive power, wherein at least a side of the fifth lens is an aspheric side.2. The miniature lens as defined in claim 1 , wherein both sides of the first lens are aspheric sides.3. The miniature lens as defined in claim 1 , wherein both sides of the second lens are aspheric sides.4. The miniature lens as defined in claim 1 , wherein both sides of the third lens are aspheric sides.5. The miniature lens as defined in claim 1 , wherein both sides of the fourth lens are aspheric sides.6. The miniature lens as defined in claim 1 , wherein the fourth lens is a meniscus ...

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Номер записи: 64
31-10-2013 дата публикации

IMAGING LENS

Номер: US20130286487A1
Автор: Liang Yuan-Fan
Принадлежит:

An imaging lens including the first˜fifth lens arranged in sequence from an object side to an image side is provided. The first lens has at least one aspheric surface. The second lens with negative optical power has at least one aspheric surface and a convex surface facing towards the object side. The third lens with positive optical power has at least one aspheric surface and a concave surface facing towards the object side. The fourth lens with negative optical power has at least one aspheric surface and a concave surface facing towards the image side. The fifth lens with positive optical power has at least one aspheric surface and a convex surface facing towards the object side. By the above arrangement, the imaging lens has a shorter optical total length and a larger aperture for enhancing the image quality. 1. An imaging lens , comprising in sequence from an object side to an image side:a first lens, having at least one aspheric surface;a second lens, having negative optical power and comprising at least one aspheric surface and a convex surface of the second lens is facing toward the object side;a third lens, having positive optical power and comprising at least one aspheric surface and a concave surface of the third lens is facing toward the object side;a fourth lens, having negative optical power and comprising at least one aspheric surface and a concave surface of the fourth lens is facing toward the image side; anda fifth lens, having positive optical power and comprising at least one aspheric surface and a convex surface of the fifth lens is facing toward the object side.2. The imaging lens as claimed in claim 1 , further comprising:an aperture, disposed at a position between a surface of the first lens facing the object side and a surface of the first lens facing the image side.3. The imaging lens as claimed in claim 1 , wherein claim 1 , the fifth lens has at least two inflection points.4. The imaging lens as claimed in claim 1 , wherein claim 1 , the ...

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Номер записи: 65
07-11-2013 дата публикации

ANAMORPHOTIC TELESCOPE

Номер: US20130293885A1
Автор: Kruizinva Borgert, Nijkerk Michiel David, Visser Huibert
Принадлежит:

An anamorphotic telescope has mutually different magnification along directions of minimum and maximum magnification in an image plane. A spectroscope with an elongated input slit directed along one of the directions of maximum and minimum magnification may be located in the image plane. The anamorphotic telescope has a first and second reflector lens with mutually different first and second radii of curvature in directions (y, x) that optically correspond to directions of minimum and maximum magnification. At least one of the first and second reflector lens has a variable radius of curvature in one direction (x), which varies as a function of position in the other direction (y), the variable radius of curvature decreasing in a direction of the angle from the view direction to the light directed by the first reflector lens to the second reflector lens. 1. An anamorphotic telescope , having mutually different magnification along directions of minimum and maximum magnification in an image plane , the anamorphotic telescope comprising a first and second reflector lens , the first reflector lens being oriented to direct light from a view direction of the telescope to the second reflector lens at an angle to the view direction , the second reflector lens being oriented to reflect light from the first reflector lens to the image plane , each of the first and second reflector lens comprising a reflective surface having a shape with mutually different first and second radii of curvature in first and second directions (y , x) that optically correspond different ones of the directions of minimum and maximum magnification in the image plane respectively , wherein at least one of the first and second reflector lens has a variable radius of curvature in the second direction (x) , which varies as a function of position in the first direction (y) , the variable radius of curvature decreasing in the direction of the first direction component of displacement from points along the ...

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Номер записи: 66
07-11-2013 дата публикации

Two Lens Module Including A Plano-Convex Lens

Номер: US20130293970A1
Автор: Lusinchi Jean-Pierre, Qiu Xiaoxiong
Принадлежит: AO Ether Corporation

An optical module () comprises a positive meniscus lens () having a focal length F and comprising a first convex optical surface () and a second concave optical surface (), and a plano-convex lens () having a focal length F and comprising a third flat optical surface () and a fourth convex optical surface () from an object side () to an image side (). The curvatures of the four optical surfaces () are defined by the equation: Zi=CURViYi2/(1+(1+Ki)CURVi2Yi2)½)+(Ai)Yi2+(Bi)Yi4+(Ci)Yi6+(Di)Yi8, and the two lenses are defined by 0.35 Подробнее

Номер записи: 67
14-11-2013 дата публикации

Image sensor module having curved infrared cut-off filter

Номер: US20130300921A1
Автор: Sung-Wook Choi
Принадлежит: SAMSUNG ELECTRONICS CO LTD

An image sensor module includes: an image sensor having an image surface; a plurality of lenses arranged sequentially from an object side to the image surface side, each of the lenses refracting an incident light; and at least one infrared cut-off filter configured to cut off an infrared component from the incident light. At least one surface of the infrared cut-off filter has a concave shape in relation to the object side.

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Номер записи: 68
14-11-2013 дата публикации

AUTOMOBILE WINDOW GLASS

Номер: US20130301118A1
Автор: Kitagawa Takashi, Ogawa Masanobu, Ooe Junzo, Sawaya Takuma
Принадлежит:

The present invention relates to a window glass for a vehicle, attached to a body flange of the vehicle at a circumferential edge portion thereof, including: an infrared ray shielding portion which reflects or absorbs infrared rays on a large part of the window; and electromagnetic wave transmitting portions having a substantially rectangular shape, which transmit at least a predetermined electromagnetic wave, at each of lower end portions on both sides in a width direction of the vehicle. 1. A window glass for a vehicle , attached to a body flange of the vehicle at a circumferential edge portion thereof , comprising:an infrared ray shielding portion which reflects or absorbs infrared rays on a large part of the window; andelectromagnetic wave transmitting portions having a substantially rectangular shape, which transmit at least a predetermined electromagnetic wave, at each of lower end portions on both sides in a width direction of the vehicle.200. The window glass for a vehicle according to claim 1 , wherein when a wavelength in the air at a central frequency of a frequency band of the predetermined electromagnetic wave to be transmitted is λ claim 1 , a shortening coefficient of wavelength in a glass is k (provided that claim 1 , k=0.64) claim 1 , and a wavelength on a glass is λg=λ·k claim 1 ,an upper edge of the electromagnetic wave transmitting portion is spaced 2 λg or more away from the body flange which is positioned at lower side thereof, andan inner lateral edge of the electromagnetic wave transmitting portion is spaced 3.6 λg or more away from the body flange which is positioned sideways thereof.3. The window glass for a vehicle according to claim 1 , wherein an upper edge of the electromagnetic transmitting portion is spaced 170 mm or more away from the body flange which is positioned at lower side thereof claim 1 , andan inner lateral edge of the electromagnetic wave transmitting portion is spaced 300 mm or more away from the body flange which is ...

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Номер записи: 69
14-11-2013 дата публикации

OPTICAL ARRANGEMENT USABLE FOR AN ULTRA WIDE BAND OPTICAL SENSOR

Номер: US20130301119A1
Автор: Aburmad Shimon
Принадлежит: OPGAL OPTRONIC INDUSTRIES LTD.

An optical arrangement of lenses configured for use with an ultra wide band optical sensor is provided herein. The optical arrangement is associated with a back focal plane and further includes a first, a second, a third, a fourth, a fifth, and a sixth lens ordered from first to sixth along a common optical axis such that the first lens is farthest from the back focal plane and the sixth lens is closest to the back focal plane, wherein the first and the second lenses are made of zinc sulfide, the third and the sixth lenses are made of barium fluoride, the fourth lens is made of magnesium oxide, and the fifth lens is made of calcium fluoride, and wherein the lenses are selected to transfer any light within a wavelength range that contains 0.42 μm to 3.6 μm. 1. An optical instrument comprising:an optical arrangement of lenses associated with a back focal plane and further comprising a first, a second, a third, a fourth, a fifth, and a sixth lens ordered from first to sixth along a common optical axis such that the first lens is farthest from the back focal plane and the sixth lens is closest to the back focal plane,wherein the first and the second lenses are made of zinc sulfide, the third and the sixth lenses are made of barium fluoride, the fourth lens is made of magnesium oxide, and the fifth lens is made of calcium fluoride, andwherein the lenses are selected to transfer any light within a wavelength range that contains 0.42 μm to 3.6 μm.2. The optical instrument according to claim 1 , wherein the lenses are located in specified locations along the common optical axis and are further associated each with specified radii claim 1 , wherein the specified locations and the specified radii are further selected such that the optical arrangement has a focal length of between 12 mm to 20 mm.3. The optical instrument according to claim 1 , wherein the lenses are located in specified locations along the common optical axis and are further associated each with specified ...

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Номер записи: 70
28-11-2013 дата публикации

INFRARED-CUT FILTER WITH SAPPHIRE SUBSTRATE AND LENS MODULE INCLUDING THE INFRARED-CUT FILTER

Номер: US20130314772A1
Автор: CHEN GA-LANE, WANG CHUNG-PEI, WEI CHAO-TSANG
Принадлежит:

An IR-cut filter includes a substrate and an infrared filtering film. The substrate is made of sapphire, and includes a first surface and a second surface opposite to the first surface. The infrared filtering film covers the first surface of the substrate and increases the reflectivity in relation to infrared light, thus filtering out the infrared light. The infrared filtering film includes a number of first high refraction index layers and a number of first low refraction index layers alternately stacked on the first surface of the substrate. 1. An IR-cut filter , comprising:a substrate made of sapphire, and comprising a first surface and a second surface opposite to the first surface; and{'sup': 'η', 'an infrared filtering film covering on the first surface of the substrate and configured for increasing reflectivity of infrared lights and filtering the infrared lights, the infrared filtering film comprising a number of first high refraction index layers and a number of first low refraction index layers alternately stacked on the first surface of the substrate; wherein the infrared filtering film is represented by (xHyL), where η is a positive integer, 30≦η≦80, 1 Подробнее

Номер записи: 71
28-11-2013 дата публикации

Imaging lens

Номер: US20130314804A1
Автор: Hitoshi Hirano, Kenichi Kubota, Sayuri Noda, Yoji Kubota, Yoshio Ise
Принадлежит: Kantatsu Co Ltd, Optical Logic Inc

An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens; a fourth lens having negative refractive power; a fifth lens having positive refractive power; and a sixth lens, arranged in this order from an object side to an image plane side. The first lens is formed so that a surface thereof on the object side has a positive curvature radius. The second lens is formed so that a surface thereof on the image plane side has a positive curvature radius. The fifth lens is formed so that a surface thereof on the object side and a surface thereof on the image plane side have negative curvature radii. Each of the third lens, the fourth lens, the fifth lens, and the sixth lens has refractive power weaker than that of each of the first lens and the second lens.

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Номер записи: 72
12-12-2013 дата публикации

Lens module

Номер: US20130329307A1
Автор: Phil Ho Jung, Young Gi Kim
Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a lens module, including: a first lens having positive refractive power, an object-sided surface thereof being convex; a second lens having negative refractive power, an image-sided surface thereof being concave; a third lens having positive refractive power; a fourth lens having negative refractive power, an image-sided surface thereof being convex; and a fifth lens having negative refractive power, an image-sided surface thereof being concave, wherein the fourth lens satisfies Conditional Expression 1, f   4 f < - 3.0 [ Conditional   Expression   1 ] where f is an overall focal distance of an optical system and f4 is a focal distance of the fourth lens.

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Номер записи: 73
19-12-2013 дата публикации

IMAGING LENS

Номер: US20130335622A1
Автор: KWON Dukkeun
Принадлежит: LG INNOTEK CO., LTD.

Disclosed herein is an imaging lens suitable for a camera module using a high resolution imaging sensor, decreasing a flare phenomenon and reducing the sensitivity. The imaging lens comprises, in order from the object side, a first lens having positive (+) refractive force; a second lens having negative (−) refractive force; a third lens having positive (+) refractive force; a fourth lens having positive (+) refractive force; and a fifth lens having negative (−) refractive force, wherein an object side plane of the third lens is convexly formed. 1. An imaging lens , consisting of five lens , in order from an object side to the image side:a first lens having positive (+) refractive power;a second lens having negative (−) refractive power;a third lens having refractive power;a fourth lens having positive (+) refractive power; anda fifth lens having refractive power,wherein an object side plane of the fourth lens is concavely formed at the optical axis, and both surfaces of the fifth lens are aspheric.2. The imaging lens as claimed in claim 1 , wherein each of object side planes and image side planes in the third lens and the fourth lens is aspheric.3. The imaging lens as claimed in claim 1 , wherein an object side plane of the third lens is convexly formed at the optical axis.4. The imaging lens as claimed in claim 1 , wherein an image side plane of the fifth lens is concavely formed at the optical axis.5. The imaging lens as claimed in claim 1 , wherein the fifth lens has at least one inflection point.6. The imaging lens as claimed in claim 1 , wherein a refractive power of the third lens is smaller than that of the first claim 1 , second claim 1 , fourth claim 1 , and fifth lenses.7. The imaging lens as claimed in claim 1 , wherein the imaging lens has a stop on an object side plane of the first lens.8. The imaging lens as claimed in claim 1 , wherein an image side plane of the fourth lens is convexly formed at the optical axis.9. The imaging lens as claimed in ...

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Номер записи: 74
26-12-2013 дата публикации

High-resolution imaging system

Номер: US20130342755A1
Автор: Christian Chomont, Francoise Cau, Michel Pealat, Vincent Duriaud
Принадлежит: Sagem Defense Securite SA

The invention relates to a high-resolution imaging system for recording images of the same scene, that are sampled in a complementary manner. To this end, an image filter ( 2 ) is arranged in an intermediate focusing plane (P 1 ), and a matrix ( 3 ) of microlenses is arranged at a distance from the image filter, with each microlens that is associated with an opening (O 2 ) of the image filter. An image detection matrix ( 9 ) is then optically conjugated with the microlens matrix. The system also comprises a device for moving an intermediate image in relation to the image filter ( 2 ). Such an imaging system is especially suitable for recording high-resolution infrared images.

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Номер записи: 75
02-01-2014 дата публикации

IMAGE CAPTURING OPTICAL LENS ASSEMBLY

Номер: US20140002711A1
Автор: HUANG Hsin-Hsuan, Tsai Tsung-Han
Принадлежит: LARGAN PRECISION CO., LTD.

An image capturing optical lens assembly includes, in order from an object side to an image side, a first lens element with positive refractive power having a convex object-side surface and a concave image-side surface, a second lens element with negative refractive power, a third lens element with negative refractive power having a concave object-side surface and a convex image-side surface, and a fourth lens element with refractive power having a concave image-side surface. The object-side surface and the image-side surface of the fourth lens element are aspheric. Either or both of the object-side surface and the image-side surface have at least one inflection point formed thereon. 1. An image capturing optical lens assembly comprising , in order from an object side to an image side:a first lens element with positive refractive power having a convex object-side surface and a concave image-side surface;a second lens element with negative refractive power;a third lens element with negative refractive power having a concave object-side surface and a convex image-side surface; anda fourth lens element with refractive power having a convex object-side surface and a concave image-side surface, wherein the object-side surface and the image-side surface of the fourth lens element are aspheric, and the fourth lens element has at least one reflection point formed on at least one of the object-side surface and the image-side surface thereof; [{'br': None, 'i': ' Подробнее

Номер записи: 76
02-01-2014 дата публикации

IMAGE PICKUP LENS

Номер: US20140002909A1
Автор: YONEZAWA Tomohiro
Принадлежит:

An image pickup lens includes an aperture stop, a first lens with positive refractive power having a convex object-side surface, a second lens with negative refractive power having a concave image-side surface, a third lens with positive refractive power having a convex image-side surface, a fourth lens with negative refractive power as a double-sided aspheric lens having a concave object-side surface, and a fifth lens with negative refractive power of a meniscus shape as a double-sided aspheric lens having a concave image-side surface, wherein the fifth lens is designed so that the negative refractive power weakens as the distance from the optical axis increases, and wherein the following conditional expression (1) is satisfied: 1. An image pickup lens composed of five lenses for a solid-state imaging element , comprising , in order from an object side to an image side , an aperture stop , a first lens having a positive refractive power with a convex surface facing the object side , a second lens having a negative refractive power with a concave surface facing the image side , a third lens having a positive refractive power with a convex surface facing the image side , a fourth lens having a negative refractive power and having both surfaces formed as aspherical surfaces with a concave surface facing the object side near an optical axis , and a fifth lens having a negative refractive power of a meniscus shape and having both surfaces formed as aspherical surfaces with a concave surface facing the image side near the optical axis , wherein the fifth lens is designed so that the negative refractive power weakens as the distance from the optical axis increases , and wherein the following conditional expression (1) is satisfied:{'br': None, 'i': Подробнее

Номер записи: 77
09-01-2014 дата публикации

OPTICAL IMAGE CAPTURING SYSTEM

Номер: US20140009843A1
Автор: HUANG Hsin-Hsuan, Tsai Tsung-Han
Принадлежит: LARGAN PRECISION CO., LTD.

An optical image capturing system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element with positive refractive power has a convex object-side surface. The second through seventh lens elements all have refractive power. The sixth lens element has an object-side surface and an image-side surface which are both aspheric. The seventh lens element has an object-side surface and an image-side surface which are both aspheric, its wherein the image-side surface of the seventh lens element changes from concave at a paraxial region thereof to convex at a peripheral region thereof. 1. An optical image capturing system comprising , in order from an object side to an image side thereof:a first lens element with positive refractive power having a convex object-side surface;a second lens element with refractive power;a third lens element with refractive power;a fourth lens element with refractive power;a fifth lens element with refractive power;a sixth lens element with refractive power having an object-side surface and an image-side surface which are both aspheric; anda seventh lens element with refractive power having an object-side surface and an image-side surface which are both aspheric, wherein the image-side surface of the seventh lens element changes from concave at a paraxial region thereof to convex at a peripheral region thereof; [{'br': None, 'i': '/f<', '0.1 Подробнее

Номер записи: 78
16-01-2014 дата публикации

IMAGING DEVICE AND ELECTRONIC APPARATUS

Номер: US20140015997A1
Автор: Baba Tomohiko
Принадлежит: SONY CORPORATION

An electronic apparatus includes an imaging device and a signal processing circuit for performing signal processing on an output signal of the imaging device. The imaging device includes one group of lenses, and an imaging element on which an image is formed through the lenses, and the lenses include a first lens having an object side surface in a convex shape projecting to an object side, a transparent body, and a second lens, the first lens, the transparent body, and the second lens being arranged in order from the object side to an image surface side without an air being interposed between the first lens, the transparent body, and the second lens, and the imaging element is curved so as to have a concave surface facing the object side. 1. An imaging device comprising:one group of lenses; andan imaging element on which an image is formed through the lenses;wherein the lenses includea first lens having an object side surface in a convex shape projecting to an object side,a transparent body, anda second lens,the first lens, the transparent body, and the second lens being arranged in order from the object side to an image surface side without an air being interposed between the first lens, the transparent body, and the second lens, andthe imaging element is curved so as to have a concave surface facing the object side.2. The imaging device according to claim 1 ,wherein the transparent body is formed by a glass plate or a plate similar to plastic.3. The imaging device according to claim 1 ,wherein a diaphragm is disposed in the lens group.4. The imaging device according to claim 1 ,wherein an infrared cutoff filter is disposed in the lens group.5. The imaging device according to claim 1 ,wherein the first lens has a doublet structure of a first lens element and a second lens element arranged in order from the object side.6. The imaging device according to claim 5 ,wherein the first lens element is formed by a biconvex lens.7. The imaging device according to claim 1 , ...

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Номер записи: 79
16-01-2014 дата публикации

Lens System

Номер: US20140016188A1
Автор: Liu Hsing-Ya
Принадлежит:

A lens system includes a first lens. The first lens is an IR absorptive lens. The first lens includes a first surface facing the object side, and a second surface facing the image side. 1. A lens system comprising:a first lens, wherein the first lens is an IR absorptive lens and comprises a first surface facing an object side, and a second surface facing an image side.2. The lens system as claimed in claim 1 , wherein a curvature of the second surface is smaller than a curvature of the first surface.3. The lens system as claimed in claim 2 , wherein the first lens further comprising an IR cut thin film claim 2 , the IR cut thin film is coated on the second surface.4. The lens system as claimed in claim 3 , wherein the first lens further comprising an antireflection coating claim 3 , the antireflection coating is coated on the first surface.5. The lens system as claimed in claim 2 , wherein the first lens further comprises an IR cut thin film coated on the first surface.6. The lens system as claimed in claim 5 , wherein the first lens further comprising an antireflection coating coated on the second surface.7. The lens system as claimed in claim 1 , wherein the first lens is made of blue glass.8. The lens system as claimed in further comprising a second lens claim 1 , wherein the first lens and the second lens are arranged in sequence from the object side to the image side.9. The lens system as claimed in claim 8 , wherein the second lens is made of plastic material.10. The lens system as claimed in claim 8 , wherein the second lens is made of glass material. 1. Field of the InventionThe invention relates to a lens system, and more particularly to a lens system including an IR absorptive lens.2. Description of the Related ArtA digital still camera, a digital video camera, or a mobile phone with photograph function generally includes a lens system and an image sensor (e.g. CCD or CMOS), wherein the lens system converges the light which is emitted from an object to the ...

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Номер записи: 80
16-01-2014 дата публикации

Optical lens assembly for image taking

Номер: US20140016211A1
Автор: Tsung-Han Tsai, Wei-Yu Chen
Принадлежит: Largan Precision Co Ltd

An optical lens assembly for image taking includes a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element with positive refractive power includes a convex object-side surface at a paraxial region. The second lens element with negative refractive power includes a concave object-side surface at a paraxial region. The third lens element with refractive power includes a concave object-side surface at a paraxial region and a convex image-side surface at a paraxial region. The fourth lens element made of plastic with negative refractive power includes a concave object-side surface at a paraxial region and an image-side surface. At least one of the object-side surface and the image-side surface of the fourth lens element is aspheric, and the image-side surface of the fourth lens element is concave at a paraxial region and convex at a peripheral region.

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Номер записи: 81
16-01-2014 дата публикации

SMALL-SIZE AND WIDE FIELD-OF-VIEW OPTICAL SYSTEM

Номер: US20140016212A1
Автор: Kim Tae Young
Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Disclosed herein is a small-size and wide field-of-view optical system including: a first lens having negative refractive power, having a shape in which it is concave from the vicinity of a near axis to an object side and becomes convex outwardly, and including a coating layer formed on a surface thereof toward the object side; a second lens having positive refractive power and having a shape in which a surface thereof toward the object side is concave and an upper side thereof is convex; and a third lens having positive refractive power and having a shape in which both sides thereof are convex. 1. A small-size and wide field-of-view optical system comprising:a first lens having negative refractive power, having a shape in which it is concave from the vicinity of a near axis to an object side and becomes convex outwardly, and including a coating layer formed on a surface thereof toward the object side;a second lens having positive refractive power and having a shape in which a surface thereof toward the object side is concave and an upper side thereof is convex; anda third lens having positive refractive power and having a shape in which both sides thereof are convex.2. The small-size and wide field-of-view optical system according to claim 1 , further comprising an aperture stop installed between the second and third lenses claim 1 , wherein the aperture stop blocks unnecessary light from light passing through the optical system.3. The small-size and wide field-of-view optical system according to claim 1 , wherein it satisfies the following Conditional Equation with respect to aberration correction and MTF performance:{'br': None, 'i': D', '/R, '22>0.98\u2003\u2003[Conditional Equation]'}where D2 indicates an interval between the first and second lenses and R2 indicates a radius of curvature of an upper side of the first lens.4. The small-size and wide field-of-view optical system according to claim 2 , wherein it satisfies the following Conditional Equation with ...

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Номер записи: 82
23-01-2014 дата публикации

Projection optical system and projection display apparatus

Номер: US20140022518A1
Автор: Masaru Amano
Принадлежит: Fujifilm Corp

A projection optical system substantially consists of a first optical system composed of a plurality of lens groups and a second optical system composed of one reflection mirror having a convex aspherical surface arranged in this order from the reduction side, in which all optical surfaces constituting the first and second optical systems are formed so as to have rotationally symmetrical shapes around one common axis, the projection optical system is configured such that focus adjustment is performed by individually moving two lens groups in the first optical system along the common axis, and the lens disposed on the most magnification side in the reduction side lens group of the two lens groups is a lens having a convex surface on the magnification side, thereby magnifying and projecting an image formed on a conjugate plane on the reduction side to a conjugate plane on the magnification side.

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Номер записи: 83
30-01-2014 дата публикации

Image capturing lens and image capturing apparatus

Номер: US20140028901A1
Автор: Takayuki Noda
Принадлежит: Fujifilm Corp

Arranging a negative first lens, a positive second lens, a negative third lens, a positive fourth lens, and a positive fifth lens from the object side, in which the image side surface of the fifth lens has an aspherical shape with one or more inflection points and a concave shape toward the image side in a paraxial region, and, when the overall optical length, focal length of the entire lens system, focal length of the first lens, distance between image side surface of the second lens and object side surface of the third lens, refractive index of the second lens, and refractive index of the third lens are taken as TL, f, f1, Dg 2-3 , N2, and N3 respectively, the image capturing lens is configured to simultaneously satisfy conditional expressions (1a): 1.0≦TL/f≦1.8, (2a): 0.09<Dg 2-3 /f, (3a): 0.07<|N2−N3|, and (4a): −35≦f1/f≦−2.3.

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Номер записи: 84
30-01-2014 дата публикации

SWITCHABLE LENS DEVICE, METHOD OF MANUFACTURING THE SAME, AND 2-DIMENSIONAL AND 3-DIMENSIONAL IMAGE DISPLAY DEVICE USING THE SAME

Номер: US20140029087A1
Автор: KIM SungWoo, Lee SeungChul, YOON Ara
Принадлежит:

A switchable lens device, a method of manufacturing the same, and a 2-dimensional (2D) and 3-dimensional (3D) image display device using the same are disclosed. The switchable lens device includes a first base film, a first lens layer which is formed on the first base film, has a first refractive index in a first direction, has a second refractive index less than the first refractive index in a second direction vertical to the first direction, and has concave surfaces, a second lens layer which has convex surfaces filled in the concave surfaces of the first lens layer and has the first refractive index, and a second base film attached to the second lens layer. 1. A switchable lens device comprising:a first base film;a first lens layer which is formed on the first base film, has a first refractive index in a first direction, has a second refractive index less than the first refractive index in a second direction vertical to the first direction, and has concave surfaces;a second lens layer which has convex surfaces filled in the concave surfaces of the first lens layer and has the first refractive index; anda second base film attached to the second lens layer.2. The switchable lens device of claim 1 , wherein a volume of the first lens layer is less than a volume of the second lens layer.3. The switchable lens device of claim 1 , wherein the first base film is formed of a material having a low retardation equal to or less than about 100 nm claim 1 , and isotropic and uniaxial characteristics.4. The switchable lens device of claim 1 , wherein the first lens layer is formed of a ultraviolet (UV) curable liquid crystal material claim 1 , which is reactive mesogen having refractive index anisotropy claim 1 , and the second lens layer is formed of a UV curable resin.5. A 2-dimensional (2D) and 3-dimensional (3D) image display device comprising:a display panel configured to display an image using light linearly polarized in a first direction;a polarization control unit ...

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Номер записи: 85
30-01-2014 дата публикации

LITHIUM CONTAINING GLASS WITH HIGH OXIDIZED IRON CONTENT AND METHOD OF MAKING SAME

Номер: US20140029088A1
Автор: Arbab Mehran, Goodwin George B., Harris Caroline S., Shelestak Larry J.
Принадлежит: PPG Industries Ohio, Inc.

A low infrared absorbing lithium glass includes FeO in the range of 0.0005-0.015 wt %, more preferably 0.001-0.010 wt %, and a redox ratio in the range of 0.005-0.15, more preferably in the range of 0.005-010. The glass can be chemically tempered and used to provide a ballistic viewing cover for night vision goggles or scope. A method is provided to change a glass making process from making a high infrared absorbing lithium glass having FeO in the range of 0.02 to 0.04 wt % and a redox ratio in the range of 0.2 to 0.4 to the low infrared absorbing lithium glass by adding additional oxidizers to the batch materials. A second method is provided to change a glass making process from making a low infrared absorbing lithium glass to the high infrared absorbing lithium glass by adding additional reducers to the batch material. In one embodiment of the invention the oxidizer is CeO. An embodiment of the invention covers a glass made according to the method. 2. The glass composition according to claim 1 , wherein cerium oxide is in the range of 0.01 to 0.15 wt %.3. The glass composition according to claim 1 , wherein the FeO is in the range of 0.001-0.010 wt %.4. The glass composition according to claim 1 , wherein the FeO(total iron) is in the range of 50 to 200 ppm.5. The glass composition according to claim 1 , wherein the redox ratio is in the range of 0.005 to 0.10.6. The glass composition according to claim 1 , wherein the oxidizer is selected from the group of cerium oxide in the range of 0.02 to 0.45 wt % claim 1 , manganese oxide in the range of 0.02 to 0.50 wt % and mixtures thereof.7. The glass composition according to claim 1 , wherein the FeO is in the range of 0.001-0.010 wt %; the total iron is in the range of 50 to 200 ppm; the redox ratio is in the range of 0.005 to 0.10 and the oxidizer is selected from the group of cerium oxide in the range of 0.02 to 0.45 wt % claim 1 , manganese oxide in the range of 0.02 to 0.50 wt % and mixtures thereof.9. The device ...

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Номер записи: 86
30-01-2014 дата публикации

IMAGE CAPTURING LENS AND IMAGE CAPTURING APPARATUS

Номер: US20140029117A1
Автор: NODA Takayuki
Принадлежит: FUJIFILM Corporation

Arranging a negative first lens, a positive second lens, a negative third lens, a positive fourth lens, and a negative fifth lens from the object side, in which the image side surface of the fifth lens has an aspherical shape with one or more inflection points and a concave shape toward the image side in a paraxial region, and, when the focal length of the entire lens system, radius of curvature of the image side surface of the first lens, radius of curvature of the image side surface of the second lens, overall optical length, focal length of jlens, and Abbe number of jlens are taken as f, R2, R4, TL, fj, and vj respectively, the image capturing lens is configured to simultaneously satisfy conditional expressions (1a): −1.5 Подробнее

Номер записи: 87
30-01-2014 дата публикации

FIXED FOCAL LENGTH LENS

Номер: US20140029119A1
Автор: Chou Yu-Hung, Li Shiu-Sheng, LIN YING-HSIU, SU YUAN-HUNG
Принадлежит: YOUNG OPTICS INC.

A fixed focal length lens includes a first lens group and a second lens group. The first lens group is disposed between a magnified side and a minified side and has a negative refractive power. The second lens group is disposed between the first lens group and the minified side and has a positive refractive power. The fixed focal length lens satisfies F/H>0.52, where F is an effective focal length of the fixed focal length, and H is an image height. 1. A fixed focal length lens comprising:a first lens group disposed between a magnified side and a minified side, the first lens group having a negative refractive power; anda second lens group disposed between the first lens group and the minified side, the second lens group having a positive refractive power,wherein the fixed-focus lens satisfies F/H>0.52, F is an effective focal length, and H is an image height.2. The fixed focal length lens as recited in claim 1 , wherein the first lens group comprises a first lens claim 1 , a second lens claim 1 , and a third lens sequentially arranged from the magnified side to the minified side claim 1 , a refractive power of the first lens claim 1 , a refractive power of the second lens claim 1 , and a refractive power of the third lens are sequentially negative claim 1 , negative claim 1 , and negative from the magnified side to the minified side claim 1 , the first lens is an aspheric lens claim 1 , the second lens group comprises a fourth lens claim 1 , a fifth lens claim 1 , a sixth lens claim 1 , a seventh lens claim 1 , an eighth lens claim 1 , a ninth lens claim 1 , and a tenth lens sequentially arranged from the magnified side to the minified side claim 1 , a refractive power of the fourth lens claim 1 , a refractive power of the fifth lens claim 1 , a refractive power of the sixth lens claim 1 , a refractive power of the seventh lens claim 1 , a refractive power of the eighth lens claim 1 , a refractive power of the ninth lens claim 1 , and a refractive power of the ...

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Номер записи: 88
06-02-2014 дата публикации

Optical Imaging Lens Assembly

Номер: US20140036378A1
Автор: HUANG Hsin-Hsuan
Принадлежит: LARGAN PRECISION CO.

An optical imaging lens assembly, sequentially arranged from an object side to an image side along an optical axis, comprising: the first lens element with positive refractive power, the second lens element with negative refractive power having a convex object-side surface and a concave image-side surface, the third lens element with positive refractive power, the fourth lens element with negative refractive power having a concave object-side surface and a convex image-side surface, the fifth lens element with refractive power having a concave image-side surface, and both object-side surface and image-side surface being aspheric, wherein a stop and an image sensor disposed on an image plane are also provided. By such arrangements, the image pickup optical system satisfies conditions related to shorten the total length and to reduce the sensitivity for use in compact cameras and mobile phones with camera functionalities. 1. An optical imaging lens assembly , sequentially arranged from an object side to an image side , comprising:a first lens element with positive refractive power;a second lens element with negative refractive power, having a convex object-side surface and a concave image-side surface;a third lens element with positive refractive power;a fourth lens element with negative refractive power, having a concave object-side surface and a convex image-side surface; anda fifth lens element with refractive power, having a concave image-side surface, and both object-side surface and image-side surface being aspheric, at least one of the object-side surface and the image-side surface having at least one inflection point;{'sub': 3', '4', '3, 'claim-text': [{'br': None, 'i': Подробнее

Номер записи: 89
13-02-2014 дата публикации

SCANNER LENS, IMAGE READER AND IMAGE FORMING DEVICE

Номер: US20140043662A1
Автор: ITOH Masahiro, NAKAYAMA Hirotoshi
Принадлежит:

A scanner lens includes a first lens group with a positive refractive power, having a first positive lens and a second negative lens which are cemented, second to fifth lens groups having a third negative lens, a fourth positive lens, a fifth negative lens, and a sixth negative lens, respectively, arranged in order from an object side to an image side, and an aperture stop disposed between the first and second lens groups. The scanner lens satisfies the following three conditions: 2. A scanner lens according to claim 1 , whereinan incidence surface of the first lens is aspheric.3. A scanner lens according to claim 1 , whereinan image-side surface of the sixth lens is aspheric.4. A scanner lens according to claim 1 , whereinthe sixth lens is made from plastic.5. A scanner lens according to claim 1 , whereinan outer shape of the sixth lens is a strip long in a main scan direction.6. An image reader comprising:an illumination system to illuminate an original document;{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the scanner lens according to , to form a reduced image of a light reflected by the original document illuminated by the illumination system; and'}a line sensor to photoelectrically convert the image of the original document formed by the scanner lens.7. An image reader according to claim 6 , further comprisinga color separator on an optical path of the scanner lens to read a color image of the original document in full color.8. An image reader according to claim 6 , whereinthe illumination system includes an LED as a light source.9. An image forming device comprising the image reader according to . The present application is based on and claims priority from Japanese Patent Application No. 2012-175774, filed on Aug. 8, 2012, the disclosure of which is hereby incorporated by reference in its entirety.1. Field of the InventionThe present invention relates to a scanner lens, an image reader incorporating the scanner lens, and an image forming device ...

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Номер записи: 90
13-02-2014 дата публикации

Infrared-cut filter of low cost and high quality and lens module

Номер: US20140043677A1
Автор: Chung-Pei Wang, Ga-Lane Chen
Принадлежит: Hon Hai Precision Industry Co Ltd

An infrared-cut (IR-cut) filter includes a substrate and an IR-cut film coated on the substrate. The IR-cut consists of thirty-two high-refractive layers and thirty-two low-refractive layers alternately stacked on the substrate. The first high-refractive layer is in contact with the substrate and the first low-refractive layer is coated on the first high-refractive layer. Transmissivity of the IR-cut film at wavelengths from about 400 nm to about 800 nm is greater than about 90%, while transmissivity of the IR-cut film at wavelengths from about 850 nm to about 1300 nm is less than about 1%, and transmissivity of the IR-cut film at wavelength 795 nm is about 50%.

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Номер записи: 91
13-02-2014 дата публикации

Imaging lens and camera module

Номер: US20140043696A1
Автор: Dukkeun Kwon
Принадлежит: LG Innotek Co Ltd

Provided is an imaging lens and a camera module, the device including in an orderly way from an object side, a first lens with positive (+) refractive power; a second lens with negative (−) refractive power; a third lens with negative (−) refractive power; a fourth lens with negative (−) refractive power; and a fifth lens with negative (−) refractive power, wherein the lens is concavely formed at an object side surface.

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Номер записи: 92
20-02-2014 дата публикации

ANNULAR OPTICAL DEVICE

Номер: US20140049836A1
Автор: Palumbo Perry A.
Принадлежит: Hach Company

One embodiment provides an annular optical device (), comprising: an annular meso-optic () including an annulus () centered about an axis of revolution (A); and a secondary optical structure () substantially coaxial within the annulus () of the annular meso-optic (), wherein the secondary optical structure () and the annular meso-optic () are separated by a media () comprising a media refractive index that is lower than a secondary optical structure refractive index, with the secondary optical structure () being configured to hold a specimen to be radiated by impinging electromagnetic radiation directed into the secondary optical structure () substantially along the axis of revolution (A), wherein re-directed radiation from the specimen is allowed into the annular meso-optic () by the secondary optical structure () if an angle of incidence of the re-directed radiation exceeds the angle of Total Internal Reflectance. Other embodiments are described and claimed. 1100. An annular optical device () , comprising:{'b': 1', '11, 'a. an annular meso-optic () including an annulus () centered about an axis of revolution (A); and'}{'b': 2', '11', '1', '2', '1', '12', '2', '2', '1', '2, 'b. a secondary optical structure () substantially coaxial within the annulus () of the annular meso-optic (), wherein the secondary optical structure () and the annular meso-optic () are separated by a media () comprising a media refractive index that is lower than a secondary optical structure refractive index, with the secondary optical structure () being configured to hold a specimen to be radiated by impinging electromagnetic radiation directed into the secondary optical structure () substantially along the axis of revolution (A), wherein re-directed radiation from the specimen is allowed into the annular meso-optic () by the secondary optical structure () if an angle of incidence of the re-directed radiation exceeds the angle of Total Internal Reflectance.'}21. The annular optical device ...

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Номер записи: 93
20-02-2014 дата публикации

PHOTOGRAPHING OPTICAL LENS ASSEMBLY

Номер: US20140049838A1
Автор: CHOU Ming-Ta, TANG Hsiang-Chi
Принадлежит: LARGAN PRECISION CO., LTD.

An photographing optical lens assembly includes, in order from an object side to an image side, a first lens element with refractive power including a convex object-side surface, a second lens element with positive refractive power including a convex image-side surface, a third lens element with positive refractive power including a concave object-side surface and a convex image-side surface, a fourth lens element with negative refractive power, and a fifth lens element with positive refractive power including a convex object-side surface, a concave image-side surface and at least one inflection point. The surfaces of the fifth lens element are aspheric. By adjusting the photographing optical lens assembly, the total length of the photographing optical lens assembly is reduced, the aberration is corrected, and the image quality is improved. 1. A photographing optical lens assembly comprising , in order from an object side to an image side:a first lens element with refractive power comprising a convex object-side surface;a second lens element with positive refractive power comprising a convex image-side surface;a third lens element with positive refractive power comprising a concave object-side surface and a convex image-side surface;a fourth lens element with negative refractive power; anda fifth lens element with positive refractive power comprising a convex object-side surface, a concave image-side surface and at least one inflection point, and both the object-side surface and the image-side surface being aspheric;wherein the photographing optical lens assembly has five lens elements with refractive powers; the photographing optical lens assembly further comprises a stop between the first lens element and the second lens element.2. The photographing optical lens assembly according to claim 1 , further comprising an image plane claim 1 , and the photographing optical lens assembly satisfying the following condition:{'br': None, 'i': ' Подробнее

Номер записи: 94
20-02-2014 дата публикации

IMAGE CAPTURING LENS AND IMAGE CAPTURING APPARATUS PROVIDED WITH THE IMAGE CAPTURING LENS

Номер: US20140049839A1
Автор: SHINOHARA Yoshikazu
Принадлежит: FUJIFILM Corporation

An image capturing lens which substantially consists of five lenses, composed of a first aspherical lens having a convex surface on the object side and a positive refractive power; a second aspherical lens having a concave surface on the image side and a negative refractive power; a third aspherical lens having a positive refractive power near the optical axis; a fourth aspherical lens having a negative refractive power; and a fifth aspherical lens which is a meniscus lens having a concave surface on the image side and a negative refractive power, arranged in this order from the object side, and satisfies predetermined conditional expressions. 3. The image capturing lens of claim 1 , wherein an aperture stop is disposed on the object side of the first lens.4. The image capturing lens of claim 1 , further satisfying a conditional expression given below:{'br': None, 'i': f', 'f, '2.2<3/1<20\u2003\u2003(2-1).'}5. The image capturing lens of claim 1 , further satisfying a conditional expression given below:{'br': None, 'i': f', 'f, '1.1<|4/5|<50\u2003\u2003(3-1).'}6. The image capturing lens of claim 1 , further satisfying a conditional expression given below:{'br': None, 'i': 'd', 'ν4<30\u2003\u2003(4-1).'}8. An image capturing apparatus provided with the image capturing lens of . The present invention relates to an image capturing lens for forming an optical image of a subject on an image sensor, such as a CCD (Charge Coupled Device), CMOS (Complementary Metal Oxide Semiconductor), or the like, and an image capturing apparatus having the image capturing lens mounted thereon to perform image capturing, such as a digital still camera, camera-equipped cell phone, smartphone, tablet terminal, personal digital assistance (PDA), or the like.Recently, along with the spread of personal computers to homes, and the like, digital still cameras capable of inputting image information obtained by imaging a landscape, person, or the like to a personal computer have been spreading ...

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Номер записи: 95
20-02-2014 дата публикации

Lens assembly of optical imaging system

Номер: US20140049840A1
Автор: Tsung-Han Tsai, Wei-Yu Chen
Принадлежит: Largan Precision Co Ltd

A lens assembly of optical imaging system includes a first lens element, a second lens element, and a third lens element. The first lens element with positive refractive power has a convex object-side surface near an optical axis. The second lens element with negative refractive power has a concave object-side surface near the optical axis, and is made of plastic. The object-side surface and the image-side surface of the second lens element are aspheric. The third lens element with negative refractive power has an image-side surface being concave near the optical axis and convex away from the optical axis, and is made of plastic. The object-side surface and the image-side surface of the third lens element are aspheric.

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Номер записи: 96
27-02-2014 дата публикации

IMAGING DEVICE AND IMAGING SYSTEM

Номер: US20140055661A1
Автор: Imamura Norihiro, Korenaga Tsuguhiro, Yamagata Michihiro
Принадлежит: Panasonic Corporation

An imaging apparatus disclosed in the present application includes a lens optical system L, an imaging device N including a plurality of first and second pixels P and P, and an arrayed optical device K, wherein: the lens optical system L includes a first optical region D which primarily passes therethrough light oscillating in a direction of a first polarization axis and a second optical region D which passes therethrough light oscillating in every direction; and the arrayed optical device K makes light having passed through the first optical region D incident on the first pixels P and makes light having passed through the second optical region D incident on the second pixels P 1. An imaging apparatus comprising:a lens optical system;an imaging device including a plurality of first pixels and a plurality of second pixels on which light having passed through the lens optical system is incident; andan arrayed optical device being arranged between the lens optical system and the imaging device and including a plurality of optical elements each having a lens surface, wherein:the lens optical system includes a plurality of optical regions, and the plurality of optical regions include a first optical region which primarily passes therethrough light oscillating in a direction of a first polarization axis and a second optical region which passes therethrough light oscillating in any direction; andthe plurality of optical elements of the arrayed optical device make light having passed through the first optical region incident on the plurality of first pixels and light having passed through the second optical region incident on the plurality of second pixels.2. The imaging apparatus of claim 1 , wherein the first optical region passes therethrough light of a first wavelength band claim 1 , and the second optical region passes therethrough light of a second wavelength band.34.-. (canceled)5. The imaging apparatus of claim 2 , wherein the first wavelength band is a wavelength ...

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Номер записи: 97
06-03-2014 дата публикации

IMAGE PICKUP LENS AND IMAGE PICKUP UNIT

Номер: US20140063323A1
Автор: Nabeta Kenshi, Yamazaki Takayuki
Принадлежит:

An image pickup lens includes: in recited order from object plane toward image plane, a first lens having positive refractive power; a second lens having positive or negative refractive power; a third lens having negative refractive power; a fourth lens having negative refractive power; a fifth lens having positive refractive power; and a sixth lens having negative refractive power and having optical surfaces, an image-sided surface of the optical surfaces having an aspherical shape with one or more inflection points other than an intersection point of the image-sided surface and an optical axis. 1. An image pickup lens comprising:in recited order from object plane toward image plane,a first lens having positive refractive power;a second lens having positive or negative refractive power;a third lens having negative refractive power;a fourth lens having negative refractive power;a fifth lens having positive refractive power; anda sixth lens having negative refractive power and having optical surfaces, an image-sided surface of the optical surfaces having an aspherical shape with one or more inflection points other than an intersection point of the image-sided surface and an optical axis.2. The image pickup lens according to claim 1 , wherein following conditional expression is satisfied claim 1 ,{'br': None, '14≦ν3≦35\u2003\u2003(1)'}where ν3 is an Abbe number of the third lens.3. The image pickup lens according to claim 1 , wherein following conditional expression is satisfied claim 1 ,{'br': None, '20≦ν5≦60\u2003\u2003(2)'}where ν5 is an Abbe number of the fifth lens.4. The image pickup lens according to claim 1 , wherein following conditional expression is satisfied claim 1 ,{'br': None, 'i': f', 'f≦, '0.4≦1to2/1.0\u2003\u2003(3)'}where f is a total focal length of the image pickup lens, andf1to2 is a combined focal length of the first lens and the second lens.5. The image pickup lens according to claim 1 , wherein following conditional expression is satisfied ...

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Номер записи: 98
06-03-2014 дата публикации

LENS MODULE

Номер: US20140063617A1
Автор: CHAE Kyu-Min, PARK Il-Yong
Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

A lens module is disclosed. A lens module in accordance with an embodiment of the present invention includes a first lens, a second lens, a third lens, and a fourth lens that are arranged successively in the direction from an object side to an imaging surface, wherein the first lens has a positive refractive index, the second lens a negative refractive index, the third lens a positive refractive index, and the fourth lens a negative refractive index, wherein the third lens includes a first sub-lens, a second sub-lens, and a third sub-lens that have a positive refractive index, wherein the fourth lens includes a center portion surrounding an optical axis and a peripheral portion surrounding the center portion, wherein the center portion on the imaging surface side is formed in a concave shape and the peripheral portion on the imaging surface side is formed in a convex shape. 1. A lens module , comprising a first lens , a second lens , a third lens , and a fourth lens that are successively arranged in the direction from an object side to an imaging surface ,wherein the first lens has a positive refractive index,wherein the second lens has a negative refractive index,wherein the third lens has a positive refractive index,wherein the fourth lens has a negative refractive index,wherein the third lens comprises a first sub-lens, a second sub-lens, and a third sub-lens that have a positive refractive index,wherein the fourth lens comprises a center portion surrounding an optical axis and a peripheral portion surrounding the center portion, andwherein the center portion on the imaging surface side is formed in a concave shape, and the peripheral portion on the imaging surface side is formed in a convex shape.2. The lens module of claim 1 , satisfying (f/f)<1.0 claim 1 , whereas f is an overall focal length of the lens module claim 1 , and fis a composite focal length of the first sub-lens claim 1 , the second sub-lens and the third sub-lens.3. The lens module of claim 1 , ...

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Номер записи: 99
06-03-2014 дата публикации

OPTICAL IMAGE CAPTURING LENS ASSEMBLY

Номер: US20140063621A1
Автор: CHOU Ming-Ta, Hsueh Chun-Che, Tsai Tsung-Han
Принадлежит: LARGAN PRECISION CO., LTD.

An optical image capturing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with refractive power has a concave object-side surface, and the object-side surface changes from concave at a paraxial region to convex at a peripheral region. The second lens element has refractive power. The third lens element has positive refractive power. The fourth lens element has negative refractive power. The fifth lens element with positive refractive power has a convex object-side surface and a concave image-side surface, wherein the image-side surface changes from concave at a paraxial region to convex at a peripheral region. The object-side surfaces and the image-side surfaces of the first and fifth lens elements are aspheric. 1. An optical image capturing lens assembly comprising , in order from an object side to an image side:a first lens element with refractive power having a concave object-side surface at a paraxial region, wherein the object-side surface of the first lens element changes from concave at the paraxial region to convex at a peripheral region, and the object-side surface and an image-side surface of the first lens element are aspheric;a second lens element with refractive power;to a third lens element with positive refractive power;a fourth lens element with negative refractive power; anda fifth lens element with positive refractive power having a convex object-side surface at a paraxial region and a concave image-side surface at a paraxial region, wherein the image-side surface of the fifth lens element changes from concave at the paraxial region to convex at a peripheral region, and the object-side surface and the image-side surface of the fifth lens element are aspheric.2. The optical image capturing lens assembly of claim 1 , wherein an object-side surface of the fourth lens element is concave at a ...

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Номер записи: 100