КОМПАКТНОЕ УСТРОЙСТВО ГОЛОГРАФИЧЕСКОГО ДИСПЛЕЯ

FIELD: physics.SUBSTANCE: invention relates to formation of holographic images, in particular to a holographic display and a method of forming a holographic image by means of a holographic display. Holographic display has a spatial light modulator with electronic control (EASLM), an array of diffraction optical element (DOE) masks, a controller for controlling operation of the holographic display for forming a holographic image.EFFECT: controller is configured to control EASLM to perform illumination of DOE masks, which must form a set of voxels of a holographic image, by means of their corresponding EASLM pixels, wherein DOE masks are pre-calculated and made.11 cl, 12 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 686 576 C1 (51) МПК G03H 1/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК G03H 1/02 (2019.02); G03H 1/2294 (2019.02); G03H 2001/0216 (2019.02) (21) (22) Заявка: 2017141816, 30.11.2017 (24) Дата начала отсчета срока действия патента: 30.11.2017 29.04.2019 Приоритет(ы): (22) Дата подачи заявки: 30.11.2017 (56) Список документов, цитированных в отчете о поиске: WO 2017017465 A1, 02.02.2017. RU (45) Опубликовано: 29.04.2019 Бюл. № 13 (54) КОМПАКТНОЕ УСТРОЙСТВО ГОЛОГРАФИЧЕСКОГО ДИСПЛЕЯ (57) Реферат: Изобретение относится к области голографического дисплея для формирования формирования голографических изображений, в голографического изображения. Контроллер частности к голографическому дисплею и способу выполнен с возможностью управления EASLM формирования голографического изображения для осуществления подсветки масок DOE, посредством голографического дисплея. которые должны формировать совокупность Голографический дисплей содержит вокселей голографического изображения, пространственный модулятор света с посредством соответствующих им пикселей электронным управлением (EASLM), массив EASLM, при этом маски DOE предварительно масок дифракционных оптических элементов рассчитаны и изготовлены. 2 н. и 9 з.п ...

УСОВЕРШЕНСТВОВАННЫЙ ПОЛИМЕРНЫЙ ЛИСТОВОЙ МАТЕРИАЛ ДЛЯ ПРИМЕНЕНИЯ В ИЗГОТОВЛЕНИИ ПОЛИМЕРНЫХ ЗАЩИЩАЕМЫХ ДОКУМЕНТОВ, ТАКИХ КАК БАНКНОТЫ

Предложен усовершенствованный полимерный листовой материал для применения в изготовлении полимерных защищаемых документов, таких как банкноты. Изобретенный полимерный листовой материал имеет одно или более встроенных и/или наложенных оптических защитных устройств. Также предоставлены полимерные защищаемые документы, сделанные с применением этих усовершенствованных полимерных листовых материалов. 3 н. и 2 з.п. ф-лы, 9 ил.

HOLOGRAPHIC PRINTER

Holographic reconstruction system whith an optical wave tracking means

HOLOGRAPHIC PRINTER

A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. The data are generated entirely by a computer as a 3-D (animated) model or from multiple 2-D camera images taken of a real 3-D(moving) object or scene from a plurality of different camera positions. The data are digitally processed and displayed on a small high resolution spatial light modulator (SLM). A compact low energy pulsed laser is used to record composite holograms. The present invention permits the creation of restricted or full parallax master transmission or reflection type composite holograms, known as H1 holograms, that can be copied using traditional methods. Alternatively the same invention and apparatus permits the direct writing of holograms without the need to pass through the intermediate stage of the H1 transmission hologram.

Viewing system including a holographic optical device allowing images to be displayed in different planes

Viewing systems are provided which include a screen and an optical collimation device including two holographic optical elements working by reflection, the first holographic optical element being closer to the screen, the second holographic optical element being closer to an observer. In the system, the screen displays a first object at a first wavelength and a second object at a second wavelength. Each holographic optical element includes two holographic treatments, each treatment being able to reflect one of the two wavelengths and to transmit the other wavelength. The first holographic element and the second holographic element are arranged such that the image of the first object forms at a first distance from the screen and that the image of the second object forms at a second distance from the screen, different from the first distance.

Focus modulation optical system and holographic display device having the same

A focus modulation optical system and a holographic display device having the focus modulation optical system are disclosed. The holographic display device includes a light source configured to emit a plurality of color lights, a focus modulation optical system including at least one variable focus lens that is configured to change a focusing position of incident light by electrical control of the at least one variable focus lens based on a color of light incident on the variable focus lens, and a spatial light modulator configured to form a holographic image by diffracting light output from the focus modulation optical system.

Polymeric sheet material for use in making polymeric security documents such as banknotes

An improved polymeric sheet material for use in making polymeric security documents such as banknotes is provided. The inventive polymeric sheet material has one or more integrated and/or applied optical security devices. Polymeric security documents made using these improved polymeric sheet materials are also provided.

LIGHTING DEVICE FOR HEADLIGHTS WITH A PHASE MODULATOR

There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam.

Optical system for holographic film exposure

HOLOGRAPHIC STEREOGRAM GENERATING DEVICE

PROBLEM TO BE SOLVED: To provide a holographic stereogram generating device which can generate a holographic stereogram with high light utilization efficiency and superior image uniformity. SOLUTION: The holographic stereogram generating device generates element holograms in order on a hologram recording medium 30 by making the laser light from a laser light source 31 incident on an image display device 4 and then irradiates the hologram recording medium 30 with the light transmitted through the display device 41 as body light and part of the laser light before being transmitted through the display device 41 as reference light. This hologram stereogram generating device is characterized by that a light integrator 63 which makes uniform the intensity of the light made incident on the display device 41 is arranged in the optical path of the laser light traveling to the display device 41. COPYRIGHT: (C)1999,JPO ...

制御可能な偏光デバイス

... 発明により、プリズム機能を有する制御可能な液滴駆動セルによって重ね合わせられた光束により生成された視認領域は、光変調器の前の広角な範囲において追跡される。光束の断面の圧縮の弊害は、プリズムセルにおいて光束が偏向されることにより最小限にされる。複数の非混合物質間の境界面を調整する、プリズムセル(4)及び制御可能な電極を備える制御可能な光偏向デバイスにより、光束(1)は変調される。発明によれば、変調セル(2)の有効領域(3)が変更された強度分布に調整された形状を有する、及びプリズムセル(4)において用いられている物質が境界面において均一な屈折力分布を生成する、の少なくともいずれかとなるように、2次の回折次数の強度を最大限に減少させることにより、視認領域において光束(1)の光路において、変更された強度分布は補正される。発明が用いられる分野は、ホログラムディスプレイのような、様々な形式の変調を実行する光変調装置を含む。 ...

Защищенный носитель информации с оптически переменным эффектом и способ его изготовления

Группа изобретений относится к области защищенной полиграфии и может быть использована при изготовлении банкнот, ценных бумаг, паспортов и другой защищенной полиграфической продукции. Защищенный носитель информации с оптически переменным эффектом включает бумажную, полимерную или комбинированную основу, содержащую зону с нанесенной точечной растровой регулярной и/или нерегулярной структурой. Причем точки, из которых состоит растровая структура, выполнены в виде геометрических фигур, содержащих прямые, ломаные, криволинейные линии, нескольких цветов, а в области растровой структуры нанесен трехмерный растр, выполненный способом металлографского бескрасочного тиснения, и/или конгревного тиснения, и/или блинтового тиснения, и/или рельефной печати, причем при наблюдении зоны под углом 90° от плоскости носителя информации видно равномерно окрашенное поле цветом, образующимся в результате синтеза красок точечной структуры. При этом при наблюдении зоны под острым углом на равномерном поле защитного ...

УСОВЕРШЕНСТВОВАННЫЙ ПОЛИМЕРНЫЙ ЛИСТОВОЙ МАТЕРИАЛ ДЛЯ ПРИМЕНЕНИЯ В ИЗГОТОВЛЕНИИ ПОЛИМЕРНЫХ ЗАЩИЩАЕМЫХ ДОКУМЕНТОВ, ТАКИХ КАК БАНКНОТЫ

Holograms

Holograms

Holograms

Holograms

A Holographic Display Communications System

There is provided a communications system including a holographic display for each of two users, the system operable to enable the two users to communicate over the internet using voice and holographic image over internet protocol, each user using a holographic display, wherein each holographic display is for generating a holographic reconstruction of a three dimensional scene (3D-S), each holographic display comprising a light source, a spatial light modulator (SLM) and an optical system illuminating the SLM, wherein reconstruction of each single object point of the 3D-S only requires a sub-hologram as a subset of the SLM and wherein holographic calculations for encoding the subsets of the SLM with the sub-holograms are executed immediately as soon as single object points in space are available after having been processed by a 3D pipeline.

Holographic display with viewer eye tracking via microprism array

A holographic display includes a spatial light modulator (SLM) and a position detection and tracking system, such that a viewers eye positions are tracked, with variable beam deflection to the viewers eye positions being performed using a microprism array which enables controllable deflection of optical beams. Image beam deflection can be continuously variable, and may use electrowetting technology; beam deflection may be controlled by using variable voltage differences applied to different electrodes on an electro wetting cell array. Micro liquid prisms may be used. Two dimensional (2D) beam deflection may be achieved by using two microprism arrays in series, and prisms can have different deflection angles. Also, lens aberrations and phase discontinuities may be corrected dynamically through SLM encoding. An additional SLM may provide phase compensation for the prism array. Various combinations of transmissive and reflective prism arrays and SLMs are disclosed.

Holographic ROM system

Holograms

holographic display

Pupil expander integrity

A holographic system comprises: a display device comprising a spatial light modulator 540 (e.g., reflective liquid crystal on silicon, LCOS, SLM) to display a diffractive pattern of an image and output spatially modulated light in accordance with the diffractive pattern; a waveguide pupil expander to receive spatially modulated light from the display device at an input port thereof and expand the system viewing window; and controller 502 to respond to a signal indicating mechanical, structural or optical failure of the waveguide pupil expander such as detection of the breakage of glass of the waveguide pupil expander. In response to the failure signal, the controller may prevent further emission of spatially modulated light, e.g., reduce a light source drive signal or switch off the light source; further, light absorbing filler expandable foam material may be released. A viewer tracking system may detect stray (e.g., laser or infrared, IR) light on a monitored viewer’s face, optionally ...

LIGHT-EMITTING DEVICE HAS DIFFRACTIVE STRUCTURES AND SYNTHETIC HOLOGRAM

HOLOGRAPHIC PROCESS Of RECORDING IN ONLY ONE STAGE BY MEANS OF a SYSTEM AFOCAL

홀로그래픽 광학 소자 및 그의 제조방법

... 본 발명은 홀로그래픽 광학 소자 및 그의 제조방법에 관한 것으로, 구체적으로 포토폴리머 수지층에 간섭패턴을 기록하는 과정에서 발생하는 원하지 않는 간섭패턴이 형성되지 않도록 위상차층을 이용하는 홀로그래픽 광학 소자 및 그의 제조방법에 관한 것이다.

improved polymeric sheet material for use in making polymeric security documents, such as bank notes

Photopolymer composition

The present invention provides a photopolymer composition which can more easily provide a photopolymer layer having improved durability against temperature and humidity while having a large refractive index modulation value, a hologram recording medium using the same, an optical element using the hologram recording medium, and a holographic recording method.

OPTICAL SYSTEM

The invention relates to an optical system for imaging a parallel light beam (parallel beam) in a light beam (half-space beam) which propagates in all directions of a half-space, and vice versa. Said optical system comprises a reflector (1) having a parabolically shaped reflecting surface, and a convergent lens (4), the optical axis and a focal point thereof coinciding with the optical axis (B) or the focal point (A) of the reflector (1). The convergent lens (4) and the reflector (1) are thus embodied in such a way that the two marginal beams (C,D) of the reflector (1) and the convergent lens (4) respectively cross the focal point (A) of the reflector (1) at an essentially identical angle. The opening surface of the plane of section through the reflector (1), which is perpendicular to the optical axis (B) of the reflector (1) and contains the focal point (A), constitutes a first reflector opening (2) for the half-space beam. The opening surface of the plane through the reflector (1), which ...

DESPECKLING A COMPUTER GENERATED HOLOGRAM

A method for despeckling the image reproduced by a Computer Generated Hologram (CGH) including reproducing a CGH, and jittering a location of an exit pupil (33,250) of an optical system through which the CGH is imaged, relative to an observer's input pupil (31,255), so as to shift at least some speckles (32,260) out of the exit pupil. A method for despeckling a Computer Generated Holographic movie including computing a first modulation for a first holographic image in a holographic movie, and computing a second modulation for a second holographic image using an initial phase distribution used for calculating the first holographic image as an initial phase distribution used for calculating the second modulation. Related apparatus and methods are also described.

HOLOGRAPHIC RECODING METHOD AND DEVICE

In recording information on a holographic recording medium by using a recording beam, the time required to reset asking servo is shortened, and the data transfer rate is increased. A holographic recorder (10) is disclosed in which the beam diameter of a laser beam from a laser light source (16) is increased and shaped into a parallel beam, the parallel beam is divided diametrically into an object light beam and a reference light beam, the divided object light beam is modulated according to information to be recorded, the object light beam and the reference light beam, kept in their parallel shapes and arranged adjacently to each other, are made to fall on the reflective surface of a rotating polygon mirror (18) by means of a focusing lens (24) having a focal point behind the reflective surface of the polygon mirror (18), and the object light beam and reference light beam are made to fall at different angles on a holographic recording medium (12) moving in the same direction as the scanning ...

Local reference beam generator

A filtering apparatus 30 passes an incident beam of light through a first lens having a first focal length, causing the incident beam of light 32 to be focussed, and then passes the incident beam of light through a pinhole 36 having an opening of a predetermined size. In accordance with one aspect of the invention, the pinhole 36 is spaced from the first lens 34 by a distance which is greater than, or less than, but not equal to the lens' focal length wherein only a portion of the incident beam of light passes through the opening of the pinhole 36. In the illustrated embodiment, the pinhole 36 has a size which is significantly larger than the nominal diffraction limited spot size of the first lens 34. The incident beam of light which passes through the pinhole is then directed toward a second lens 38 having a second focal length. In a preferred embodiment, the second lens 38 is spaced from the pinhole 36 by a distance substantially equal to the second lens' focal length. Because of the ...

METHOD AND APPARATUS FOR DISPLAYING BINOCULAR HOLOGRAM IMAGE

Disclosed herein are a method and apparatus for displaying a binocular hologram image. The method includes generating a light beam of an incident wave field having coherence, expanding the generated light beam to the size of the active area of a display, converging the expanded light beam on the respective positions of the eyes of a user, generating digital hologram content, and displaying a hologram image based on the converged light beam and on the digital hologram content. 1. A method for displaying a binocular hologram image , comprising:generating a light beam of an incident wave field having coherence;expanding the generated light beam to a size of an active area of a display;converging the expanded light beam on respective positions of eyes of a user;generating digital hologram content; anddisplaying a hologram image based on the converged light beam and on the digital hologram content.2. The method of claim 1 , wherein expanding the generated light beam is configured to expand the generated light beam so as to have characteristics of a plane wave field.3. The method of claim 1 , wherein expanding the generated light beam is configured to expand the generated light beam so as to have uniform light intensity.4. The method of claim 1 , wherein converging the expanded light beam comprises:dividing the expanded light beam into two light beams; anddeflecting the two light beams in left and right directions, respectively.5. The method of claim 4 , wherein dividing the expanded light beam is configured to pass the expanded light beam through a beam-dividing diffraction grating claim 4 , which is a transmissive diffraction grating pattern obtained through periodic refractive index modulation claim 4 , thereby dividing the expanded light beam.6. The method of claim 4 , wherein deflecting the two light beams is configured to pass the two light beams through two respective beam-deflecting diffraction gratings claim 4 , which are transmissive diffraction grating patterns ...

IMAGE OBSERVATION APPARATUS

The image observation apparatus introduces an object light, which is at least part of an object illumination light emitted from a light source and projected onto an object and which is reflected by the object, through a first optical waveguide to an image sensor, introduces a reference light, which is emitted from the light source and passes through an optical path different from that of the object light, to the image sensor, and records an interference fringe through the image sensor as a hologram. The apparatus forms the recorded hologram on a spatial light modulator and illuminate the modulator with a hologram illumination light corresponding to the reference light to generate a reconstruction light, and causes the reconstruction light entering a second optical waveguide optically equivalent to the first optical waveguide and exiting from the second optical waveguide to form an object reconstructed image.

HOLOGRAPHIC OPTICAL APPARATUS, HOLOGRAPHIC OPTICAL SYSTEM, AND HOLOGRAPHIC DISPLAY SYSTEM

A holographic optical apparatus includes a beam splitting component, a transmission assembly, a focal length modulation component and an optical element. The beam splitting component splits received light into reference light and signal light that are coherent light, and outputs the reference light and the signal light. The focal length modulation component includes a plurality of local length modulation regions with different focal lengths. The optical element includes a recording medium layer with a plurality of recording regions, and each recording region is located in a light-exit path of a focal length modulation region. The transmission assembly is disposed in a light-exit path of the beam splitting component, transmit the reference light to the plurality of recording regions and transmit the signal light to the plurality of focal length modulation regions.

Holographic recording method and apparatus

ホログラムを作製する方法と装置

... 本発明は、少なくとも第1の光線束(L)が形成されて変調される2つの光線束(L,R)が感光層(22)で干渉し合う、ホログラムを作製する方法と装置に関する。方法の面では前記形成が、光線相互の長さ比率を維持しながら行われる。装置の面では、少なくとも第1の光線束(L)を形成するために第1の光学系が設けられ、この光学系は有利には一対の放物面鏡(18)を含んでいる。 ...

Patent RU2017104544A3

ВУ"? 2017104544” АЗ Дата публикации: 18.03.2019 Форма № 18 ИЗ,ПМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение ж 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2017104544/12(008106) 16.07.2015 РСТЛО52015/040745 16.07.2015 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 62/025,637 17.07.2014 05 Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) УСОВЕРШЕНСТВОВАННЫЙ ПОЛИМЕРНЫЙ ЛИСТОВОЙ МАТЕРИАЛ ДЛЯ ПРИМЕНЕНИЯ В ИЗГОТОВЛЕНИИ ПОЛИМЕРНЫХ ЗАЩИЩАЕМЫХ ДОКУМЕНТОВ, ТАКИХ КАК БАНКНОТЫ Заявитель: ВИЗУАЛ ФИЗИКС, ЛЛС, 95, КРАНЕ СЕКБЮРИТИ ТЕХНОЛОДЖИС, ИНК., ЦЗ 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты (см. Примечания) [ ] приняты во внимание следующие пункты: [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) В420 25/324 (2014.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) В42О 25/00-25/324 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): СМГТРА, РЕРАТБЗ пе, Е$расепе, Соозе, 7-Р]а( Ра, КТРВТУ, РАТЕМТЗСОРЕ, Раеагсв, КОРТО, ОРТО 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ...

УСОВЕРШЕНСТВОВАННЫЙ ПОЛИМЕРНЫЙ ЛИСТОВОЙ МАТЕРИАЛ ДЛЯ ПРИМЕНЕНИЯ В ИЗГОТОВЛЕНИИ ПОЛИМЕРНЫХ ЗАЩИЩАЕМЫХ ДОКУМЕНТОВ, ТАКИХ КАК БАНКНОТЫ

FIELD: metallurgy.SUBSTANCE: disclosed is improved polymer sheet material for use in making polymer protected documents, such as banknotes. Inventive polymer sheet material has one or more built-in and/or superimposed optical protective devices.EFFECT: disclosed are also polymer protected documents made using said improved polymer sheet materials.5 cl, 9 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 689 041 C2 (51) МПК B42D 25/324 (2014.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B42D 25/324 (2019.02) (21)(22) Заявка: 2017104544, 16.07.2015 (24) Дата начала отсчета срока действия патента: Дата регистрации: Приоритет(ы): (30) Конвенционный приоритет: 17.07.2014 US 62/025,637 (43) Дата публикации заявки: 17.08.2018 Бюл. № 23 (56) Список документов, цитированных в отчете о поиске: WO 2012103441 A1, 02.08.2012. US 2010308571 A1, 09.12.2010. WO 2007133613 A2, 22.11.2007. (45) Опубликовано: 23.05.2019 Бюл. № 15 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 17.02.2017 2 6 8 9 0 4 1 (73) Патентообладатель(и): ВИЗУАЛ ФИЗИКС, ЛЛС (US), КРАНЕ СЕКЬЮРИТИ ТЕХНОЛОДЖИС, ИНК. (US) 23.05.2019 R U 16.07.2015 (72) Автор(ы): КАПЕ Самуэл М. (US), КОТЕ Паул Ф. (US), ГОСНЕЛЛ Джонатан Д. (US) US 2015/040745 (16.07.2015) C 2 C 2 (86) Заявка PCT: (87) Публикация заявки PCT: R U 2 6 8 9 0 4 1 WO 2016/011249 (21.01.2016) Адрес для переписки: 107078, Москва, Красноворотский пр-д, 3, стр. 1, к. 18, ООО "Патентно-правовая фирма "Искона-II" (54) УСОВЕРШЕНСТВОВАННЫЙ ПОЛИМЕРНЫЙ ЛИСТОВОЙ МАТЕРИАЛ ДЛЯ ПРИМЕНЕНИЯ В ИЗГОТОВЛЕНИИ ПОЛИМЕРНЫХ ЗАЩИЩАЕМЫХ ДОКУМЕНТОВ, ТАКИХ КАК БАНКНОТЫ (57) Реферат: Предложен усовершенствованный защитных устройств. Также предоставлены полимерный листовой материал для применения полимерные защищаемые документы, сделанные в изготовлении полимерных защищаемых с применением этих усовершенствованных документов, таких как банкноты. Изобретенный полимерных листовых материалов. 3 н. и 2 з.п. фполимерный ...

HOLOGRAPHISCHES REKONSTRUKTIONSSYSTEM MIT EINER OPTISCHEN WELLENNACHFÜHRUNG

Image display systems.

Holographic display

Holograms

HOLOGRAPHIC PRINTER

HOLOGRAPHIC RECONSTRUCTION SYSTEM WITH AN OPTICAL WAVE ADJUSTING

DIGITAL HOLOGRAPHY (DH) SYSTEM FOR RECORDING AND RECONSTRUCTION OF COMPUTER-PROCESSED HOLOGRAM

A method and apparatus for monochrome or color digital holography (DH), which utilizes fiber-optical (FO) technology to illuminate object and reconstruct 3-D object's visible-light image taken in any wavelength or computer-simulated is disclosed. Acousto-optical filter together with a multi-line laser are further used for color holography.

Holographic rom system

An improved polymeric sheet material for use in making polymeric security documents such as banknotes

Lighting device for headlights with a phase modulator

HOLOGRAPHIC IMAGING

DEVICE AND METHOD FOR OBSERVING PARTICLES, IN PARTICULAR SUBMICRON PARTICLES

HOLOGRAPHIC IMAGING

LIGHT-EMITTING DEVICE HAS DIFFRACTIVE STRUCTURES AND SYNTHETIC HOLOGRAM

Dispositif émissif lumineux (100) comportant au moins : - une couche métallique (112) apte à s'échauffer et à propager des ondes de surface consécutives à l'échauffement de la couche métallique, la couche métallique étant structurée telle qu'elle comporte plusieurs motifs de diffraction aptes à réaliser une diffraction des ondes de surface vers des modes de propagation en espace libre, et dans laquelle un hologramme synthétique est codé tel qu'une image de phase de chaque pixel de l'hologramme soit codée par un décalage de position d'un des motifs de diffraction ; - des moyens (104) aptes à chauffer la couche métallique (112).

INCREASING AN AREA FROM WHICH RECONSTRUCTION FROM A COMPUTER GENERATED HOLOGRAM MAY BE VIEWED

A method of enlarging an observation window (330) from which the reconstruction (35,305) from a Computer Generated Hologram (CGH) may be viewed, including reproducing a CGH, and shifting a location of an exit pupil or observation window (330a, 330b) of an optical system reproducing the CGH (10,15,20,25). A method of increasing a viewing angle from which the reconstruction (35,305,705) from a Computer Generated Hologram (CGH) may be seen, including producing a plurality of instances (714,715,716) of a CGH, projecting each one of the instances in a different direction so that a first exit pupil of a first instance is close to a second exit pupil of a second instance. An optical system including a plurality of exit pupils associated with a plurality of optical components, further including a light deflector for jittering a location of a first exit pupil so as to increase an overlap of the first exit pupil with a second exit pupil. Related apparatus and methods are also described.

INCREASING AN AREA FROM WHICH A COMPUTER GENERATED HOLOGRAM MAY BE VIEWED

A method of enlarging an observation window from which a Computer Generated Hologram (CGH) may be viewed, including producing a CGH, and shifting a location of an exit pupil of an optical system producing the CGH. A method of increasing a viewing angle from which a Computer Generated Hologram (CGH) may be seen, including producing a plurality of instances of a CGH, projecting each one of the instances in a different direction so that a first exit pupil of a first instance is close to a second exit pupil of a second instance. An optical system including a plurality of exit pupils associated with a plurality of optical components, further including a light deflector for jittering a location of a first exit pupil so as to increase an overlap of the first exit pupil with a second exit pupil. Related apparatus and methods are also described.

Holographic projector

A projection device having a coherent light beam-generator that generates a light beam and a beam expander disposed to receive the light beam and to emit an expanded light beam. The projection device also includes a digital micro-mirror device disposed to receive a holographic transform of an original image and to display the holographic transform for illumination by the expanded light beam into a holographic light beam with a convergent or focusing lens disposed to receive and modulate the holographic light beam and a liquid crystal plate volumetric image reconstructor that receives the focused holographic light beam and emits a 3-dimensional holographic image of the original image.

Light-emitting device with diffractive structures and a synthetic hologram

A light-emitting device including at least a metal layer able to be heated and to propagate surface waves consecutive to the heating of the metal layer, with the metal layer being structured such that it comprises several diffraction patterns able to carry out a diffraction of the surface waves to free-space propagation modes, wherein a synthetic hologram is encoded such that a phase image of a pixel of the hologram is encoded by an offset in the position of one of the diffraction patterns, and a heater of the metal layer.

HOLOGRAPHIC DISPLAY SYSTEM

A holographic display system includes a light source that emits coherent light; a lateral displacement beam splitter that optically receives the coherent light and generates first reference light and second reference light; a first spatial light modulator (SLM) and a second SLM that optically receive the first reference light and the second reference light respectively, and construct first phase-only function (POF) light and second POF light respectively; a first beam splitter and a second beam splitter that optically receive the first POF light and the second POF light respectively, and generate first split light and second split light respectively; and a plurality of polarizers disposed between the first SLM and the first beam splitter, and between the second SLM and the second beam splitter, respectively.

APPARATUS AND METHOD FOR GENERATING HOLOGRAM BASED ON HUMAN VISUAL SYSTEM MODELING

In the present invention, by providing an apparatus for generating a hologram based on human visual system modeling, including a lens configured to focus light emitted from a three-dimensional (3D) object, a sensor configured to detect the light, an object information obtaining unit configured to obtain object information of the 3D object based on information of the lens and a confusion circle size threshold value corresponding to information of the sensor, and a hologram image generating unit configured to generate a hologram image for the 3D object based on the object information, it is possible to provide a method of generating a hologram based on a human visual system capable of generating image information of a three-dimensional object faster and capable of generating a higher-quality hologram image. 1. An apparatus for generating a hologram based on human visual system modeling , comprising:a lens configured to focus light emitted from a three-dimensional (3D) object;a sensor configured to detect the light;an object information obtaining unit configured to obtain object information of the 3D object based on information of the lens and a confusion circle size threshold value corresponding to information of the sensor; anda hologram image generating unit configured to generate a hologram image for the 3D object based on the object information.2. The apparatus of claim 1 , wherein the object information obtaining unit determines positions of a plurality of planes passing through the three-dimensional object based on the confusion circle size threshold value claim 1 , and obtains the object information of each of the plurality of planes.3. The apparatus of claim 2 , wherein the object information obtaining unit determines a position of a first plane based on the position of the 3D object claim 2 , determines a first focal length of a lens corresponding to the position of the first plane claim 2 , and determines a position of at least one second plane that is ...

HOLOGRAPHIC PRINTER

A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. The data are generated entirely by a computer as a 3-D (animated) model or from multiple 2-D camera images taken of a real 3-D (moving) object or scene from a plurality of different camera positions. The data are digitally processed and displayed on a small high resolution spatial light modulator (SLM). A compact low energy pulsed laser, is used to record composite holograms. The present invention permits the creation of restricted or full parallax master transmission or reflection type composite holograms, known as H1 holograms, that can be copied using traditional methods. Alternatively the same invention and apparatus permits the direct writing of hologram without the need to pass through the intermediate stage of the H1 transmission hologram.

HOLOGRAPHISCHES AUFNAHMESYSTEM

High resolution display

Projection

An image projector displays a computer-generated hologram generated by a processing engine using a display device 403B. The hologram includes a lens function with a first optical power. An optical element 450 with a second optical power is located between the display device and a display plane 405B. A light source 401B provides off-axis illumination of the display device which spatially modulates the light according to the hologram and lens function. The display device and display plane are tilted with respect to the optical element by a first θ and second angle α respectively, the second angle being less than the first angle. The light’s angle of incidence may be less than 30, 20 or 15 degrees. The difference between the first and second angle may be a function of the ratio between the first and second optical power. The optical element may be perpendicular to the light propagation axis. The processing engine may calculate the light modulation pattern in real-time from an input or received ...

Holographic display with communications

Pupil expansion

Holograms

Display system

OPTICAL SYSTEM FOR EXPOSING A HOLOGRAM FILM

Holographic printer

HOLOGRAPHIC RECONSTRUCTION SYSTEM WITH AN OPTICAL WAVEGUIDE

The invention relates to a holographic reconstruction system with spatial light modulation means, modulating interferable light waves from light sour ces (LQ1-LQ4) with at least one video hologram, comprising optical focusing means (LA), focusing the modulated light waves with the reconstructed object light points (OPL) for at least one eye position (EP) for the eyes of obser vers and controllable electro-optical deflector means (DM), which direct the focused modulated light waves with the reconstructed light points to at lea st one eye position in order to reduce the aberrations. Said reconstruction system has the optical focusing means in a field of focusing elements, where in each focusing element is provided with at least one interferable light so urce. The electro-optical deflector means lie in the light path of the inter ferable light waves after the optical focusing mean and have at least one fi eld of deflector elements, which has at least one separately controllable el ectro-optical ...

Using the coherent light illumination device

VIEWING SYSTEM COMPRISING A HOLOGRAPHIC OPTICAL DEVICE FOR DISPLAYING IMAGES IN DIFFERENT PLANES

DEVICE AND METHOD FOR GENERATING AT LEAST ONE HOLOGRAPHIC IMAGE

HOLOGRAPHIC PROCESS Of RECORDING IN ONLY ONE STAGE BY MEANS OF a SYSTEM AFOCAL

La présente invention concerne un procédé holographique d'enregistrement en une seule étape, à partir d'un objet matériel ou d'une scène matérielle, d'une image volumique, orthoscopique, réelle ou partiellement réelle, et de restitution de celle-ci, rendue conformément à son homothétie volumique, soit restituée conformément à ses proportions tridimensionnelles, procédé assurant la fonction que l'onde restituée est identique à l'onde enregistrée. La solution est d'utiliser un système optique centré afocal. L'homothétie volumique, nécessaire à la restitution fidèle de l'objet, est obtenue au moyen d'un système afocal consistant au fait qu'un objet matériel ou une scène matérielle (16) soit localisé sur le lieu du plan focal objet d'une première lentille et qu'une seconde lentille, identique à la première lentille, soit placée sur le plan anti-principal image de cette première lentille ; ce qui produit en conséquence, une image réelle volumique (17) se formant sur le lieu du plan focal image ...

HOLOGRAPHIC DISPLAY WITH MICROPRISM ARRAY

Display system

OPTICAL INFORMATION RECORDING DEVICE, OPTICAL INFORMATION RECORDING/REPRODUCTION DEVICE, OPTICAL INFORMATION RECORDING METHOD, OPTICAL INFORMATION RECORDING/REPRODUCTION METHOD, AND OPTICAL ELEMENT

In this optical information recording/reproduction method: when the drive rate of a phase mask changes during recording, the phase of pixel units of signal light is altered in a manner so that the phase change rate of the pixel units is uniform or at least a uniform amount within a page and among pages, by which means an increase in recording multiplexing number resulting from the homogenization of media consumption during angular multiplexed recording and favorable and stable signal recording are achieved; and while moving an optical element, which adds phase information to a light beam containing information of two-dimensional page data, in a direction perpendicular to the optical axis of the light beam, phase information is added to the light beam and the page data is recorded to a recording medium. The optical information recording/reproduction method is characterized in that when recording page data of at least two differing pages, the information is recorded to the recording medium ...

LASER LOCAL DIMMING FOR PROJECTORS AND OTHER LIGHTING DEVICES INCLUDING CINEMA, ENTERTAINMENT SYSTEMS, AND DISPLAYS

Light from an array of laser light sources are spread to cover the modulating face of a DMD or other modulator. The spread may be performed, for example, by a varying curvature array of lenslets, each laser light directed at one of the lenslets. Light from neighboring and/or nearby light sources overlap at a modulator. The lasers are energized at different energy/brightness levels causing the light illuminating the modulator to itself be modulated (locally dimmed). The modulator then further modulates the locally dimmed lights to produce a desired image. A projector according to the invention may utilize, for example, a single modulator sequentially illuminated or separate primary color modulators simultaneously illuminated. 1. A display , comprising:a light source;a display modulator; anda mid-point redirector configured to direct light emitted from the light source onto the display modulator in an overlapping pattern of illuminated areas;the mid-point redirector further configured to selectively re-direct light axially aligned toward a first area of the display modulator, the re-direction changing the alignment of the light from the first area of the display modulator to a second area of the display modulator different from the first area;wherein the display modulator is energized according to image data, a light field simulation of the overlapping pattern of illuminated areas on the display modulator, and selectively re-directed light.2. The display according to claim 1 , wherein the light selectively re-directed comprises light re-directed from one or more first areas of the display modulator corresponding to one or more relatively dark portions of an image to be modulated to one or more second areas of the display modulator corresponding to one or more relatively bright portions of the image to be modulated.3. The display according to claim 1 , wherein the mid-point redirector comprises an array of optical switches.4. The display according to claim 1 , wherein ...

TRANSMISSIVE HOLOGRAPHIC OPTICAL ELEMENT, METHOD FOR GENERATING THE SAME, AND SCREEN DEVICE INCLUDING TRANSMISSIVE HOLOGRAPHIC OPTICAL ELEMENT

The present invention suggests a holographic optical element which forms a pattern according to a transmissive hologram recording method based on a multi-diverging object beam and a reference beam, a method for generating the same, and a screen device including the holographic optical element. The holographic optical element according to the present invention includes a base film and a pattern which is formed on the base film by using a transmissive hologram recording method based on a multi-diverging object beam and a reference beam.

Vorrichtung zur Herstellung eines Replik-Hologramms, Replik-Hologramm sowie Beleuchtungsvorrichtung für ein Fahrzeug

Vorrichtung zur Herstellung eines Replik-Hologramms, umfassend eine Halterung (1) für ein lichtempfindliches Aufzeichnungsmaterial, in das das Replik-Hologramm einbelichtet werden soll, eine Halterung (1) für ein Masterhologramm (2), sowie eine Belichtungsvorrichtung zur Erzeugung von Licht (18) für die Belichtung des Masterhologramms (2), wobei die Farbe des von der Belichtungsvorrichtung erzeugten Lichts (18) verändert werden kann, und wobei die Belichtungsvorrichtung Optikmittel (6) für die Belichtung des Masterhologramms (2) mit dem von der Belichtungsvorrichtung erzeugten Licht (18) umfasst, die derart ausgebildet sind, dass das von dem Masterhologramm (2) ausgehende Licht auf das Aufzeichnungsmaterial auftrifft, um das Replik-Hologramm herzustellen.

Holograms

Holograms

Communications system including a holographic display

Holographic projector

Method and device for generating holograms

An improved polymeric sheet material for use in making polymeric security documents such as banknotes

An improved polymeric sheet material for use in making polymeric security documents such as banknotes is provided. The inventive polymeric sheet material has one or more integrated and/or applied optical security devices. Polymeric security documents made using these improved polymeric sheet materials are also provided. FIG. 3a 2 10 20 16 1 2 6t FIG. 3(a) ...

An improved polymeric sheet material for use in making polymeric security documents such as banknotes

An improved polymeric sheet material for use in making polymeric security documents such as banknotes is provided. The inventive polymeric sheet material has one or more integrated and/or applied optical security devices. Polymeric security documents made using these improved polymeric sheet materials are also provided. FIG. 3a 2 10 20 16 1 2 6t FIG. 3(a) ...

AN IMPROVED POLYMERIC SHEET MATERIAL FOR USE IN MAKING POLYMERIC SECURITY DOCUMENTS SUCH AS BANKNOTES

An improved polymeric sheet material for use in making polymeric security documents such as banknotes is provided. The inventive polymeric sheet material has one or more integrated and/or applied optical security devices. Polymeric security documents made using these improved polymeric sheet materials are also provided.

HOLOGRAPHIC PRINTER

A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. The data are generated entirely by a computer as a 3-D (animated) model or from multiple 2-D camera images taken of a real 3-D(moving) object or scene from a plurality of different camera positions. The data are digitally processed and displayed on a small high resolution spatial light modulator (SLM). A compact low energy pulsed laser is used to record composite holograms. The present invention permits the creation of restricted or full parallax master transmission or reflection type composite holograms, known as H1 holograms, that can be copied using traditional methods. Alternatively the same invention and apparatus permits the direct writing of holograms without the need to pass through the intermediate stage of the H1 transmission hologram.

HOLOGRAPHIC PRINTER

A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. The data are generated entirely by a computer as a 3-D (animated) model or from multiple 2-D camera images taken of a real 3-D (moving) object or scene from a plurality of different camera positions. The data are digitally processed and displayed on a small high resolution spatial light modulator (SLM). A compact low energy pulsed laser, is used to record composite holograms. The present invention permits the creation of restricted or full parallax master transmission or reflection type composite holograms, known as H1 holograms, that can be copied using traditional methods. Alternatively the same invention and apparatus permits the direct writing of hologram without the need to pass through the intermediate stage of the H1 transmission hologram.

HOLOGRAPHIC DISPLAY

Disclosed is a holographic display including a spatial light modulator (S LM) with pixels, the SLM pixels being on a substrate, the SLM including circ uitry which is on the same substrate as the SLM pixels, the circuitry operab le to perform calculations which provide an encoding of the SLM.

HOLOGRAPHIC DISPLAY

Disclosed is a holographic display including a spatial light modulator, a nd including a position detection and tracking system, such that a viewer's eye positions are tracked, with variable beam deflection to the viewer's eye positions being performed using a microprism array which enables controllab le deflection of optical beams.

HOLOGRAPHIC DISPLAY WITH COMMUNICATIONS

Holographic display with which voice and holographic image over internet protocol (VHIOIP) services or communications are provided.

HOLOGRAPHIC DISPLAY WITH COMMUNICATIONS

HOLOGRAM PREPARING METHOD

A hologram preparing method, wherein an object light including a plurality of images displayed on a spatial light modulation element (6) is beamed together with a reference light onto a recording surface (11) via a lens array (7) consisting of a plurality of lenses disposed in conjunction with individual images (s) included in the object light and reduction optical systems (9, 10) for reducing the object light emitted from the lens array (7), and interference light between the object light and the reference light is recorded on the recording surface (11). Partitions (15) provided between the spatial light modulation element (6) and the lens array (7) to isolate individual images from each other reduces noise.

Advanced Methods of and Apparatus for the Manipulation of Electromagnetic Phenomenon: the Decoding of Genetic Material and the Human Genome (E3)

An advanced method of and apparatus for manipulating electromagnetic spectra, which incorporates a bent tepee or bent pyramidal aligned array of conical or pyramidal inverted sections that have at least two intrinsic angles of differing values aligned co-axially. These are arranged to naturally produce a reference and object waves that impinges on and illuminate a holographic plate or recording means to produce on-axis or in-line transmission and reflection holograms, including real time display. The technology is also applicable to the detection, identification, and/or decoding of genetic material, specifically DNA and the Human Genome.

HOLOGRAM RECORDING DEVICE AND HOLOGRAM RECORDING METHOD

The present disclosure discloses a hologram recording device and a hologram recording method. The hologram recording device comprises an object imaging unit comprising a cavity for accommodating an object whose interior wall is a reflective surface, and a light modulating unit configured to produce incident light and reference light interfering with the incident light and to direct the incident light to the object imaging unit. The cavity is provided with an imaging aperture for imaging of the object and at least one light incidence aperture for allowing the incident light to enter the cavity and irradiate on the object, such that an image of the object is formed at a location corresponding to the imaging aperture outside the cavity, and image light produced upon the imaging of the object interferes with the reference light at the location for recording of an image surface hologram. 1. A hologram recording device , comprising:an object imaging unit comprising a cavity for accommodating an object, an interior wall of the cavity being a reflective surface; anda light modulating unit configured to produce incident light and reference light interfering with the incident light and to direct the incident light to the object imaging unit,wherein the cavity is provided with an imaging aperture for imaging of the object and at least one light incidence aperture for allowing the incident light to enter the cavity and irradiate on the object, such that an image of the object is formed at a location corresponding to the imaging aperture outside the cavity, image light produced upon the imaging of the object interfering with the reference light at the location for recording of an image surface hologram.2. The hologram recording device according to claim 1 , wherein the object imaging unit comprises an upper parabolic mirror and a lower parabolic mirror whose reflective surfaces are arranged opposite to each other claim 1 , the upper parabolic mirror and lower parabolic mirror ...

Lighting Device for Headlights with a Phase Modulator

There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises Fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam.

VIEWING SYSTEM INCLUDING A HOLOGRAPHIC OPTICAL DEVICE ALLOWING IMAGES TO BE DISPLAYED IN DIFFERENT PLANES

Viewing systems are provided which include a screen and an optical collimation device including two holographic optical elements working by reflection, the first holographic optical element being closer to the screen, the second holographic optical element being closer to an observer. In the system, the screen displays a first object at a first wavelength and a second object at a second wavelength. Each holographic optical element includes two holographic treatments, each treatment being able to reflect one of the two wavelengths and to transmit the other wavelength. The first holographic element and the second holographic element are arranged such that the image of the first object forms at a first distance from the screen and that the image of the second object forms at a second distance from the screen, different from the first distance. 1. A viewing system including a screen and an optical collimation device forming the image from this screen at a first distance from said screen , said optical device including two holographic optical elements working by reflection , the first holographic optical element being closer to the screen , the second holographic optical element being closer to an observer , wherein:the screen displaying a first object at a first wavelength and a second object at a second wavelength, the first wavelength being different from the second wavelength;the first holographic optical element includes a first holographic treatment having a first optical power reflecting the first wavelength and transmitting the second wavelength;the first holographic optical element includes a second holographic treatment having a second optical power reflecting the second wavelength and transmitting the first wavelength;the second holographic optical element includes a third holographic treatment having a third optical power reflecting the first wavelength and transmitting the second wavelength;the second holographic optical element includes a fourth holographic ...

Lighting Device for Headlights with a Phase Modulator

There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises Fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam.

Holographic Lidar System and Method

There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises Fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam. 128-. (canceled)29. A method for performing a light detection and ranging (“LIDAR”) measurement on a scene , comprising:providing a beam of incident light;illuminating an addressable spatial light modulator with the beam of incident light;providing, using the spatial light modulator, a selectable phase delay distribution to the beam of incident light with the addressable spatial modulator to provide an exit beam, the phase delay distribution comprising a representation of a pattern of illumination in the hologram domain, andperforming holographic transformation of the pattern of illumination in the hologram domain, such that the phase-modulated light of the exit beam forms an image in the spatial domain; andprojecting the image in the spatial domain to form a pattern of illumination in space, the pattern of illumination in space illuminating the scene.30. The method of claim 29 , further comprising detecting illumination reflected from the scene claim 29 , wherein the detection of illumination reflected from the scene comprises capturing an image of the scene illuminated with the pattern of illumination in space.31. The method of claim 30 , further comprising comparing the captured image with the projected pattern of illumination.32. The method of claim 30 , further comprising detecting an abnormality in the scene based on the detected illumination.33. The method of claim 32 , wherein detecting the abnormality ...

Compound Metaoptics For Amplitude And Phase Control Of Wavefronts

A compound metaoptic is presented. The compound metaoptic is comprised of at least two phase-discontinuous metasurfaces, which can convert an incident light beam to an aperture field with a desired magnitude, phase, and polarization profile. Each of the constitutive metasurfaces is designed to exhibit specific refractive properties, which vary along the metasurface. Furthermore, due to its transmission-based operation, the metaoptic can operate without lenses and be low profile: potentially having a thickness on the order of a few wavelengths or less. A systematic design procedure is also presented, which allows conversion between arbitrary complex-valued field distributions without reflection, absorption or active components. Such compound metaoptics may find applications where a specific complex field distribution is desired, including displaying holographic images and augmented or virtual reality systems. 1. A compound metaoptic , comprising:a first metasurface is configured to receive electromagnetic radiation incident thereon and spatially separated by a distance from a second metasurface;wherein the first metasurface operates to refract the electromagnetic radiation onto the second metasurface without reflection and loss and thereby change the power density distribution of the electromagnetic radiation at surface of the second metasurface;wherein the second metasurface is configured to receive the refracted electromagnetic radiation from the first metasurface and operates to correct the phase of the electromagnetic radiation to match a target phase distribution or a target polarization distribution;wherein the first metasurface and the second metasurface exhibit bianisotropic properties.2. The compound metaoptic of wherein the first metasurface and the second metasurface are surfaces textured at a subwavelength scale in relation to wavelength of the electromagnetic radiation incident thereon.3. The compound metaoptic of wherein the first metasurface and the ...

DISPLAY APPARATUS

The display apparatus of the present disclosure includes an imaging light generating device and an optical system on which imaging light emitted from the imaging light generating device is incident. The optical system includes a first optical unit having positive power, a second optical unit having a positive power and including a first diffraction element, a third optical unit having positive power, and a fourth optical unit having positive power and including a second diffraction element forming an exit pupil, the first optical unit, the second optical unit, the third optical unit, and the fourth optical unit being aligned in order along an optical path of the imaging light. The second diffraction element is constituted of a volume hologram and has, in a cross-sectional view of the volume hologram, interference fringes continuously varying in pitch and inclination thereof from one end toward another end of the second diffraction element. 1. A display apparatus , comprising:an imaging light generating device; andan optical system on which imaging light emitted from the imaging light generating device is incident, whereinthe optical system includes a first optical unit having positive power, a second optical unit having positive power and including a first diffraction element, a third optical unit having positive power, and a fourth optical unit having positive power and including a second diffraction element forming an exit pupil due to the imaging light,the first optical unit, the second optical unit, the third optical unit, and the fourth optical unit being aligned in order along an optical path of the imaging light, andthe second diffraction element is constituted of a volume hologram and has, in a cross-sectional view of the volume hologram, interference fringes continuously varying in pitch and inclination thereof from one end toward another end of the second diffraction element.2. The display apparatus according to claim 1 , whereinthe second diffraction ...

HOLOGRAPHIC RECONSTRUCTION DEVICE AND METHOD

The present disclosure relates to improved holographic reconstruction device and a method. In one aspect, the present disclosure relates to improved holographic reconstruction device and method that can measure a digital hologram regardless of optical characteristics of an object to be measured, by an all-in-one type system integrating a transmissive system that measures an object transmitting light and a reflective system that measures an object reflecting light. 1. A holographic reconstruction device comprising:a first beam splitter configured to split single wavelength light into a first transmitted beam and a second transmitted beam;a plurality of optical mirrors configured to reflect the first transmitted beam toward an object to be measured;a second beam splitter configured to split the second transmitted beam into a first reflected beam and a second reflected beam;an object beam objective lens configured to allow the first transmitted beam to pass through the object or the first reflected beam to pass therethrough;a reference beam objective lens configured to allow the second reflected beam to pass therethrough;a position adjustment mirror configured to transmit the second reflected beam passing through the reference beam objective lens;a recording medium configured to record an interference pattern formed based on two or more of the first transmitted beam, the second transmitted beam, the first reflected beam, or the second reflected beam, entering the second beam splitter; anda processor configured to receive and store an image file generated by converting the interference pattern transmitted from the recording medium, whereinthe processor is configured to selectively acquire a beam transmitting object hologram for the object and a beam reflecting object hologram for the object according to a transmissive mode and a reflective mode.2. The holographic reconstruction device of claim 1 , wherein the beam transmitting object hologram is expressed as a complex ...

DISPLAY WITH OBSERVER TRACKING

The invention relates to a display, in particular an autostereoscopic or holographic display, for representing preferably three-dimensional information, wherein the stereo views or the reconstructions of the holographically encoded objects can be tracked to the movements of the associated eyes of one or more observers in a finely stepped manner within a plurality of zones of the movement region. In this case, the zones are selected by the activation of switchable polarization gratings. 1. A display , in particular an autostereoscopic or holographic display , wherein image views or reconstructions of holographically encoded objects can be tracked to movements of associated eyes of at least one observer , comprising:an illumination unit generating light,at least one polarization grating stack having a stack of optical components comprising at least two switchable or controllable polarization gratings for light deflection,a spatial light modulator for modulating the light of the illumination unit for displaying image information or for reconstructing encoded hologram information,a system controller for driving and synchronizing the switchable and or controllable polarization gratings, the illumination unit and the spatial light modulator,at least one controllable deflection grating having a variable grating period enabling an additional finely stepped light deflection, anddepending on the current position of the eyes of an observer, the illumination unit, the polarization grating stack and/or the controllable deflection grating are drivable by the system controller in such a way that the light of the illumination unit is deflectable in the direction of the eyes of the observer.2. The display as claimed in claim 1 , wherein the polarization grating stack additionally comprises as optical component at least one switchable or controllable birefringent retardation layer.3. The display as claimed in claim 2 , wherein the controllable birefringent retardation layer is ...

IMAGE PROJECTION APPARATUS

An aperture forming member is provided on a light path from a laser light source to a collimator lens, and a plurality of apertures are formed by a plurality of wall bodies of the aperture forming member. The distances between the apertures and the outer surface of an effective beam decrease in the order of L1, L2, and L3. By providing the plurality of apertures, entrance of stray light into a phase conversion array can be prevented. 1. An image projection apparatus comprising:a laser light source;a collimator lens configured to convert laser light emitted from the laser light source into a collimated beam;a phase conversion array configured to phase-convert the collimated beam passing through the collimator lens to generate a hologram image; anda projection portion configured to project the hologram image generated by the phase conversion array,wherein a plurality of apertures are arranged at intervals between the laser light source and the collimator lens in a direction along the optical axis.2. The image projection apparatus according to claim 1 , wherein a gap in a direction perpendicular to the optical axis is provided between the outer surface of an effective beam reaching the collimator lens from the laser light source and each of the apertures claim 1 , and the gap becomes smaller toward the collimator lens.3. The image projection apparatus according to claim 1 , wherein a plurality of wall surfaces facing the laser light source are provided between the laser light source and the collimator lens claim 1 , inner edges of the wall surfaces define the apertures claim 1 , and angles between virtual surfaces extending from the laser light source to the inner edges and the wall surfaces are 90 degrees ±20 degrees or less.4. The image projection apparatus according to claim 3 , wherein the wall surfaces have a light reflection prevention structure or a light absorption structure.5. The image projection apparatus according to claim 1 , wherein a plurality of second ...

LIGHTING DEVICE FOR HEADLIGHTS WITH A PHASE MODULATOR

There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam. 1. A lighting device arranged to produce a controllable light beam for illuminating a scene , the device comprising:an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light;Fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution; andprojection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam,wherein the spatial light modulator is a pixelated spatial light modulator and the device is arranged to widen the angle of illumination by using the higher diffraction orders.2. The lighting device of claim 1 , wherein the projection optics magnify the image.3. The lighting device of claim 1 , wherein the phase delay distribution comprises a representation of the pattern of illumination in the Fourier domain.4. The lighting device of claim 1 , wherein the image is in the spatial domain.5. The lighting device of claim 1 , wherein the Fourier optic is arranged to perform a time-space transformation.6. The lighting device of claim 1 , wherein the Fourier optic is a Fourier lens.7. The lighting device of claim 1 , wherein the Fourier lens has short focal length.8. The lighting device of claim 1 , the spatial light modulator is reflective.9. The lighting device of claim 1 , wherein the spatial light modulator is a liquid crystal on ...

Holographic display device and holographic display method

There is provided a holographic display device, which includes a display panel including plural sub-pixels, wherein each sub-pixel includes plural subdivided pixels, and each subdivided pixel has an adjustable light transmittance; a backlight, configured to provide reference light to the display panel; a phase adjustment layer, including plural transparent phase adjustment components, wherein each phase adjustment component is configured to adjust a phase of a light ray transmitted through the phase adjustment component, and the phase adjustment components corresponding to a single sub-pixel have phase adjustment amounts different from each other; and a controller, configured to obtain a target phase of a light ray to be transmitted through each sub-pixel, and determine a target subdivided pixel, which corresponds to the target phase, in each sub-pixel, and further configured to obtain a target intensity of the light ray, and adjust a light transmittance of the target subdivided pixel.

VARIABLE SHEAR WITH VOLUME HOLOGRAMS

An optical device including a first rigid substrate, a flexible holographic optical element, a transparent flexible material having a variable shear transmission property across an in-plane direction of the flexible holographic optical element, and a second rigid substrate, wherein the flexible holographic optical element and the transparent flexible material are located between the first and second rigid substrates, wherein the variable shear transmission property of the transparent flexible material transmits variable amounts of a shear force applied to the first or second rigid substrates across the in-plane direction of the flexible holographic optical element. 1. An optical device comprising:a first rigid substrate;a flexible holographic optical element;a transparent flexible material having a variable shear transmission property across an in-plane direction of the flexible holographic optical element; anda second rigid substrate, wherein the flexible holographic optical element and the transparent flexible material are located between the first and second rigid substrates; whereinthe variable shear transmission property of the transparent flexible material transmits variable amounts of a shear force applied to the first or second rigid substrates across the in-plane direction of the flexible holographic optical element.2. The optical device of claim 1 , wherein the flexible holographic optical element is a flexible volume Bragg grating.3. The optical device of claim 1 , wherein the flexible holographic optical element is a flexible volume hologram.4. The optical device of claim 1 , wherein the flexible holographic optical element has a non-uniform grating vector.5. The optical device of claim 1 , wherein the variable shear transmission property of the transparent flexible material is achieved at least in part by the transparent flexible material having a variable thickness across the in-plane direction.6. The optical device of claim 1 , wherein the variable ...

Exposure device for recording a hologram, method for recording a hologram, and method for controlling an exposure device for recording a hologram

An exposure device for recording a hologram. The exposure device includes at least one modulation unit, which is designed to generate a modulation beam representing a reference beam and/or an object beam by impressing a modulation representing at least one holographic element of the hologram onto a laser beam. The exposure device also includes at least one reduction unit, which is designed to generate a modified modulation beam using the modulation beam, the modified modulation beam having a smaller beam diameter than the modulation beam. The exposure device further includes at least one objective lens unit, which is designed to direct the modified modulation beam through an immersion medium onto a recording material in order to record the hologram by exposing the recording material to the modified modulation beam.

ILLUMINATION APPARATUS AND DISPLAY APPARATUS

Provided are an illumination apparatus that allows a reduction in thickness and a display apparatus that uses the illumination apparatus. The illumination apparatus includes a laminated illumination portion formed by layering illumination portions that each emit illumination light as a plane wave with a different wavelength. The illumination portions include light sources that emit light of a predetermined wavelength, optical waveguides that propagate the light emitted from the light sources, and gratings that diffract the light propagating through the optical waveguides and emit the light as the illumination light. 1. An illumination apparatus comprising:a laminated illumination portion formed by layering a plurality of illumination portions each configured to emit illumination light as a plane wave with a different wavelength;wherein each illumination portion comprises a light source configured to emit light of a predetermined wavelength, an optical waveguide configured to propagate the light emitted from the light source, and a grating configured to diffract the light propagating through the optical waveguide and emit the light as the illumination light.2. The illumination apparatus of claim 1 , wherein the laminated illumination portion emits the illumination light with a different wavelength from each illumination portion in a same direction.3. The illumination apparatus of claim 1 , wherein the optical waveguide is formed by a single mode optical waveguide.4. The illumination apparatus of claim 1 , wherein the optical waveguide is formed by a slab-type optical waveguide.5. The illumination apparatus of claim 1 , wherein the grating increases in height in a propagation direction of the light that propagates through the optical waveguide.6. The illumination apparatus of claim 1 , wherein in the laminated illumination portion claim 1 , the plurality of illumination portions are layered in a direction of emission of the light claim 1 , in order of decreasing ...

Holographic LIDAR System

There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises Fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam. 128-. (canceled)29. A method for performing a light detection and ranging (“LIDAR”) measurement on a scene , comprising:providing a beam of incident light;illuminating an addressable spatial light modulator with the beam of incident light;providing, using the spatial light modulator, a selectable phase delay distribution to the beam of incident light with the addressable spatial modulator to provide an exit beam, the phase delay distribution comprising a representation of a pattern of illumination in the Fourier domain;performing a frequency-space transformation upon the phase-modulated light of the exit beam to form an image in the spatial domain; andprojecting the image in the spatial domain to form a pattern of illumination in space, the pattern of illumination in space illuminating the scene.30. The method of claim 29 , further comprising detecting illumination reflected from the scene.31. The method of claim 30 , wherein the detection of illumination reflected from the scene comprises capturing an image of the scene illuminated with the pattern of illumination in space.32. The method of claim 31 , further comprising comparing the captured image with the projected pattern of illumination.33. The method of claim 30 , further comprising detecting an abnormality in the scene based on the detected illumination.34. The method of claim 33 , wherein detecting the abnormality comprises identifying differences between a ...

Optical sectioning using a phase pinhole

The present invention relates to an arrangement for the generation of images of optical sections of a three-dimensional (3D) volume in space such as an object, scene, or target, comprising: an illumination unit, an optical arrangement for the imaging of the object onto at least one spatially resolving detector, a scanning mechanism for scanning the entire object and a signal processing unit for the implementation of a method for digital reconstruction of a three-dimensional representation of the object from images of said object as obtained by said detector (which may be in a form of a hologram), wherein the optical arrangement includes a diffractive optical element (herein a phase pinhole), realized using a Spatial Light Modulator (SLM) configured to mimic an actual physical pinhole, while allowing the formation of a three-dimensional representation for a specific point of interest in said object, such that for each scanning position a single hologram or an image is recorded.

Facilitating interactive floating virtual representations of images at computing devices

A mechanism is described for facilitating interactive floating virtual representations of images at computing devices according to one embodiment. A method of embodiments, as described herein, includes receiving a request for a virtual representation of an image of a plurality of images, where the virtual representation includes a three-dimensional (3D) virtual representation that is capable of being floated in mid-air. The method may further include selecting the image to be presented via an image source located at a first angle from an imaging plate, and predicting a floating plane to be located at a second angle from the imaging plate, where the image is communicated from the image source to the floating plane via the imaging plate. The method may further include presenting the virtual representation of the image via the floating plane.

Method and Apparatus for Defect Inspection of Transparent Substrate

A method for defect inspection of a transparent substrate comprises (a) providing an optical system for performing a diffraction process of object wave passing through a transparent substrate, (b) interfering and wavefront recording for the diffracted object wave and a reference wave to reconstruct the defect complex images (including amplitude and phase) of the transparent substrate, (c) characteristics analyzing, features classifying and sieving for the defect complex images of the transparent substrate, and (d) creating defect complex images database based-on the defect complex images for comparison and detection of the defect complex images of the transparent substrate.

ELECTROLUMINESCENT DISPLAY DEVICE

An electroluminescent display device includes a substrate including first, second, and third sub-pixel regions; an interlayer insulating layer and a passivation layer each separately disposed at the first, second, and third sub-pixel regions on the substrate; a reflective electrode disposed on the passivation layer of each of the first, second, and third sub-pixel regions; first, second, and third dielectric layers disposed corresponding to the first, second, and third sub-pixel regions, respectively, on the reflective electrode; a first electrode disposed on each of the first, second, and third dielectric layers; an insulating pattern covering an edge of the first electrode; a light-emitting layer disposed on the first electrode and the insulating pattern and substantially all over the substrate including the first, second, and third sub-pixel regions; and a second electrode disposed on the light-emitting layer, wherein the first, second, and third dielectric layers have different thicknesses. 1. An electroluminescent display device comprising:a substrate including first, second, and third sub-pixel regions;an interlayer insulating layer and a passivation layer each separately disposed at the first, second, and third sub-pixel regions on the substrate;a reflective electrode disposed on the passivation layer of each of the first, second, and third sub-pixel regions;first, second, and third dielectric layers disposed on the reflective electrode and corresponding to the first, second, and third sub-pixel regions, respectively;a first electrode disposed on each of the first, second, and third dielectric layers;an insulating pattern covering an edge of the first electrode;a light-emitting layer disposed on the first electrode and the insulating pattern including the substrate the first, second, and third sub-pixel regions; anda second electrode disposed on the light-emitting layer,wherein each of the first, second, and third dielectric layers has a different thickness.2 ...

Holographic Pattern Generation for Head-Mounted Display (HMD) Eye Tracking Using an Array of Parabolic Mirrors

A system for making a holographic medium for use in generating light patterns for eye tracking includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium, a second set of optical elements configured to transmit the second portion of the light for providing a second wide-field beam, and a plurality of parabolic reflectors optically coupled with the second set of optical elements and configured to receive the second wide-field beam and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium. 1. A system for making a holographic medium for use in generating light patterns for eye tracking , the system including:a light source configured to provide light;a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light;a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium;a second set of optical elements configured to transmit the second portion of the light for providing a second wide-field beam; anda plurality of parabolic reflectors optically coupled with the second set of optical elements and configured to receive the second wide-field beam and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.2. The system of claim 1 , wherein the plurality of parabolic reflectors is arranged in a circular configuration.3. The system of claim 1 , wherein the plurality of ...

Holographic Pattern Generation for Head-Mounted Display (HMD) Eye Tracking Using a Diffractive Optical Element

A system for making a holographic medium for use in generating light patterns for eye tracking includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium and one or more diffractive optical elements configured to receive the second portion of the light and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium. 1. A system for making a holographic medium for use in generating light patterns for eye tracking , the system including:a light source configured to provide light;a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light;a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium; andone or more diffractive optical elements configured to receive the second portion of the light and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.2. The system of claim 1 , wherein the light provided by the light source is coherent light.3. The system of claim 1 , wherein the one or more diffractive optical elements are configured to project a first light pattern of the plurality of separate light patterns onto the optically recordable medium at a first angle claim 1 , and project a second light pattern of the plurality of separate light patterns onto the optically recordable medium at a second angle that is distinct from the first angle.4. The system of claim 1 , ...

HOLOGRAPHIC RECONSTRUCTION DEVICE AND METHOD

The present disclosure relates to improved holographic reconstruction device and a method. In one aspect, the present disclosure relates to improved holographic reconstruction device and method that can measure a digital hologram regardless of optical characteristics of an object to be measured, by an all-in-one type system integrating a transmissive system that measures an object transmitting light and a reflective system that measures an object reflecting light. 1. A holographic reconstruction device comprising:a light source unit configured to emit single wavelength light;a first beam splitter configured to split the single wavelength light emitted from the light source unit into a first transmitted split beam and a second transmitted split beam;a plurality of optical mirrors configured to reflect the first transmitted split beam split by the first beam splitter;a second beam splitter configured to split the second transmitted split beam split by the first beam splitter into a first reflected split beam and a second reflected split beam;an object beam objective lens configured to allow the first transmitted split beam reflected from the plurality of optical mirrors and then transmitted through an object to be measured or the first reflected split beam split by the second beam splitter to pass therethrough;a reference beam objective lens configured to allow the second reflected split beam split by the second beam splitter to pass therethrough;a position adjustment mirror to which the second reflected split beam passing through the reference beam objective lens is transmitted;a recording medium configured to record an interference pattern formed when the first transmitted split beam transmitted through the object to be measured or the first reflected split beam reflected from a surface of the object to be measured and the second reflected split beam passing through the reference beam objective lens and reflected from the position adjustment mirror respectively pass ...

Holographic Pattern Generation for Head-Mounted Display (HMD) Eye Tracking Using a Lens Array

A system for making a holographic medium includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium, a second set of optical elements configured to transmit the second portion of the light through for providing a second wide-field beam, and a plurality of lenses optically coupled with the second set of optical elements configured to receive the second wide-field beam and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium. 1. A system for making a holographic medium for use in generating light patterns for eye tracking , the system including:a light source configured to provide light;a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light;a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium;a second set of optical elements configured to transmit the second portion of the light through for providing a second wide-field beam; anda plurality of lenses optically coupled with the second set of optical elements configured to receive the second wide-field beam and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.2. The system of claim 1 , wherein the plurality of lenses is arranged in a microlens array.3. The system of claim 1 , wherein the plurality of lenses is arranged in a circular configuration.4. The system of claim 1 , wherein the plurality of ...

Holographic Pattern Generation for Head-Mounted Display (HMD) Eye Tracking Using a Prism Array

A system for making a holographic medium includes a light source configured to provide light, and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium, a second set of optical elements configured to transmit the second portion of the light for providing a second wide-field beam, and a plurality of prisms optically coupled with the second set of optical elements and configured to receive the second wide-field beam and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.

Image Display System and Image Display Method

An image display system is provided. The image display system includes: at least one holographic image acquiring device each configured to obtain holographic image information of a scene; an image synthesis device configured to generate holographic image synthesis information based on at least a part of the holographic image information obtained by the at least one holographic image acquiring device; and an image reconstruction device configured to reconstruct a holographic synthetic image in accordance with the holographic image synthesis information. The image display system can synthesize holographic image information to combine several holographic three-dimensional display scenes into one holographic three-dimensional scene, so that the user can perceive display effects almost the same as the real scenes, improving user experience. An image display method is also provided. 1. An image display system , comprising:at least one holographic image acquiring device each configured to obtain holographic image information of a scene;an image synthesis device configured to generate holographic image synthesis information based on at least a part of the holographic image information obtained by the at least one holographic image acquiring device; andan image reconstruction device configured to reconstruct a holographic synthetic image in accordance with the holographic image synthesis information.2. The system of claim 1 , wherein a holographic image acquiring device comprises a light source assembly claim 1 , an optical assembly and an image acquiring device.3. The system of claim 2 , whereinthe light source assembly is configured to emit a first light beam and a second light beam that irradiates the scene, the second light beam is guided to the scene by the optical assembly, the light exiting from the scene impinges on the image acquiring device after interfering with the first light beam and the image acquiring device converts the interference information formed by the ...

AN IMPROVED POLYMERIC SHEET MATERIAL FOR USE IN MAKING POLYMERIC SECURITY DOCUMENTS SUCH AS BANKNOTES

An improved polymeric sheet material for use in making polymeric security documents such as banknotes is provided. The inventive polymeric sheet material has one or more integrated and/or applied optical security devices. Polymeric security documents made using these improved polymeric sheet materials are also provided. 1. An improved polymeric sheet material for use in making polymeric security documents such as banknotes , which is made up of a polymer or polymeric substrate having a thickness greater than or equal to about 60 microns and one or more integrated and/or applied optical security devices which project one or more synthetic images , the one or more optical security devices being integrated and/or applied to all or part of the substrate , wherein when the one or more optical security devices is positioned on or within only a portion of the substrate , an opacifying coating is optionally used to cover remaining portions thereof ,wherein, the improved polymeric sheet material has one or more integrated optical security devices, wherein the one or more integrated optical security devices is made up of an arrangement of image icons and an overlying optionally embedded arrangement of focusing elements that are located on an upper surface of the polymer or polymeric substrate, and a reflective layer that is located directly below the arrangement of image icons and the optionally embedded arrangement of focusing elements on a lower surface of the substrate, wherein the reflective layer is a patterned metal layer in which secondary image icons are formed by patterned dernetallization, wherein when viewing the improved polymeric sheet material, the one or more synthetic images appear with missing areas in the form of the secondary image icons,orwherein, the improved polymeric sheet material has one or more applied optical security devices, wherein the one or more applied optical security devices is made up of an arrangement of image icons and an underlying ...

Optical projector with off-axis diffractive element and conjugate images

In an embodiment, an off-axis hologram is provided. The off-axis hologram creates two, conjugate images which are on either side (off-axis) of the 0-order beam. A Multiple Beam Grating (MBG) is used to both duplicate the conjugate images and to redirect the images along the axis. The 0-order beam is blocked before or at the MBG. The MBG projects the images onto a 3D surface, such as a person's face.

Despeckling a computer generated hologram

A method for despeckling a Computer Generated Hologram (CGH) including producing a CGH, and jittering a location of an exit pupil of an optical system through which the CGH is imaged, relative to an observer's input pupil, so as to shift at least some speckles out of the exit pupil. A method for despeckling a Computer Generated Holographic movie including computing a first modulation of a first holographic image in a holographic movie, and computing a second modulation of a second holographic image using an initial phase distribution used for calculating the first holographic image as an initial phase distribution used for calculating the second modulation. Related apparatus and methods are also described.

INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING SYSTEM, AND NON-TRANSITORY COMPUTER READABLE MEDIUM

An information processing apparatus includes a detector and a reception unit. The detector detects approaching of a user toward an image formed in midair. The reception unit receives an action of the user as an operation in a case where the user approaches the image from a predetermined direction. 1. An information processing apparatus comprising:a detector that detects approaching of a user toward an image formed in midair; anda reception unit that receives an action of the user as an operation in a case where the user approaches the image from a predetermined direction.2. The information processing apparatus according to claim 1 ,wherein the detector has a first detection region located at a first distance from the image in the predetermined direction and a second detection region located at a second distance that is closer to the image than the first detection region.3. The information processing apparatus according to claim 2 ,wherein the reception unit receives the action of the user as the operation in a case where a body part of the user passes through the second detection region after passing through the first detection region.4. The information processing apparatus according to claim 2 ,wherein the first detection region and the second detection region are provided within a length of a finger of the user from the image.5. The information processing apparatus according to claim 1 ,wherein the reception unit does not receive another action as the operation within a predetermined time period from the reception.6. The information processing apparatus according to claim 5 ,wherein the reception unit does not receive another action as the operation until a body part of the user is no longer detected in both of a first detection region and a second detection region after the time period elapses, the first detection region being provided at a first distance from the image in the predetermined direction, the second detection region being provided at a second ...

Method for Recording Gabor Hologram

The present invention is related to an holographic probe device for recording gabor hologram comprising: a coherent optical fiber bundle comprising a distal end and a proximal end; a recording medium optically coupled to the proximal end of the coherent optical fiber bundle; a light source producing in use a single light beam, illuminating the distal end of the coherent optical fiber bundle and the object to be observed. 113. Holographic probe device () for recording gabor hologram comprising:{'b': 6', '106', '206', '1', '101', '201, 'a coherent optical fiber bundle (,,) comprising a distal end (, , ) and a proximal end;'}{'b': 7', '107', '207', '6', '106', '206, 'a recording medium (, , ) optically coupled to the proximal end of the coherent optical fiber bundle (,,);'}{'b': 8', '108', '208', '5', '1', '101', '201', '6', '106', '206', '2, 'a light source (, , ) producing in use a single light beam (), illuminating the distal end (, , ) of the coherent optical fiber bundle (,,) and the object () to be observed.'}2138108208. Holographic probe device () according to wherein the light source ( claim 1 , claim 1 , ) is selected from the group consisting of LED claim 1 , laser claim 1 , and gas discharge tubes.381082085. Holographic probe device according to claim 1 , wherein the light source ( claim 1 , claim 1 , ) comprise an optical fiber for guiding the light from the light source and forming the beam ().47107207. Holographic probe device according to claim 1 , wherein the recording medium ( claim 1 , claim 1 , ) is a CMOS or a CCD image sensor.571072071211221261062067107207. Holographic probe device according to claim 1 , wherein the recording medium ( claim 1 , claim 1 , ) is optically coupled to the proximal end of the coherent optical fiber bundle by either direct contact or by means of a lens ( claim 1 , claim 1 , ) forming an image of the proximal end of the coherent optical fiber bundle ( claim 1 , claim 1 ,) on said recording medium ( claim 1 , claim 1 , ). ...

ILLUMUNATION OF HOLOGRAMS

There is herein defined optics (e.g. an array of optics) forming an optical beam to either produce a collimated or diverging/converging beam emerging from a virtual source point to illuminate a hologram. There is also described an optical beam illuminating a reflection hologram from the front and a further configuration where an optical beam combined with a holographic optical element (HOE) minor enables rear illumination of a reflection hologram. 115-. (canceled)16. A holographic display apparatus comprising:an illumination unit capable of emitting light to illuminate a hologram and form a consequent holographic image,wherein the illumination unit is comprised of an array of individual sub-units, each comprising a light source and corresponding optics, the illumination unit forming an overall collimated, diverging or converging beam.17. The holographic display apparatus according to claim 16 , wherein the illumination unit is comprised of an array of smaller illumination sub-units claim 16 , each comprising a light source and corresponding optics to control its overall output beam shape (e.g. collimated) claim 16 , and wherein the smaller sub-units are “close-packed” claim 16 , or tessellated claim 16 , in an array such that there is no (or negligible) gap between them.18. The holographic display apparatus according to claim 17 , wherein the array of smaller illumination sub-unit is of a periodic structure including that of square claim 17 , rectangular or hexagonal.19. The holographic display apparatus according to claim 16 , wherein the illumination unit comprises an array of sub-units arranged at one edge of a hologram.20. The holographic display apparatus according to claim 16 , wherein the illumination unit forms a beam which is used as light source for either reflection or transmission holograms.21. The holographic display apparatus according to claim 16 , wherein the illumination unit is compact and comprises a plurality or an array of light sources formed ...

Method and apparatus for forming a visible image in space

A device that creates visible light in space comprises of a light source and optics system that result in irradiated visible spectrum light rays with a low intensity such that the light is not visible by the normal observer. Multiple rays of visible-spectrum low-intensity non-visible light intersect. When the constructive intensity of the intersecting light is above the threshold for being visible then light appears at that place. The light rays to and from the visible light remain non-visible. The addition of irradiated visible light results in additional visual effects. The visible light can be moved in space, and form multi-dimensional images and holograms. User and programmable controls, with communication abilities and data storage, can mediate the light source and optics to control the visible image. 1. A device for forming visible light comprising of:a light source,irradiated light rays in the visible spectrum at a non-visible intensity,and an optics system structured to cause multiple light rays to converge;and in a suitable viewing medium, where the light rays travel and intersect, and when the combined light intensity is above the threshold for being visible, light is visible to the observer.2. A device of claim 1 , further comprising of a control system claim 1 , which is a plurality of internal and user controls operative to adjust aspects of the light source and or the optics system.3. A device of claim 1 , wherein the light source comprises of at least one of:a light bulb,a light emitting diode,a laser,electroluminescent material,the display of a computing device,a flame,and plasma.4. A device of claim 1 , further comprising of visible irradiated light rays.5. A device of claim 1 , wherein the light source and or the optics system are operative to adjust mutable aspects of the light rays and visible image including at least one of:path,position,intersection points,focus,frequency/color,intensity,image,and time sequencing.6. A device of claim 1 , ...

Illuminating method using coherent light source

A laser beam (L 50 ) generated by a laser light source ( 50 ) is reflected by a light beam scanning device ( 60 ), and irradiated onto a hologram recording medium ( 45 ). On the hologram recording medium ( 45 ), an image ( 35 ) of a scatter plate is recorded as a hologram by using reference light that converges on a scanning origin (B). The light beam scanning device ( 60 ) bends the laser beam (L 50 ) at the scanning origin (B) and irradiates it onto the hologram recording medium ( 45 ). At this time, scanning is carried out by changing the bending mode of the laser beam with time so that the irradiation position of the bent laser beam (L 60 ) on the hologram recording medium ( 45 ) changes with time. Regardless of the beam irradiation position, diffracted light (L 45 ) from the hologram recording medium ( 45 ) reproduces the same reproduction image ( 35 ) of the scatter plate at the same position. An illumination spot in which speckles are reduced is formed on the light receiving surface (R) of an illuminating object ( 70 ) by the reproduction image ( 35 ) of the hologram.

OPTICAL WAVEGUIDE INCLUDING SPATIALLY-VARYING VOLUME HOLOGRAM

An optical waveguide includes a waveguide body and a spatially-varying volume hologram. The volume hologram increases, in a coordinate direction along the volume hologram, an angle of incidence by which light propagating in the waveguide body via total internal reflection is released from the waveguide body. The optical waveguide may form part of an optical system that includes one or more light sources and/or optical sensors. 1. An optical waveguide , comprising:a waveguide body; anda spatially-varying volume hologram that increases, in a coordinate direction along the spatially-varying volume hologram, an angle of incidence by which light propagating in the waveguide body via total internal reflection is released from the waveguide body.2. The optical waveguide of claim 1 , wherein the waveguide body is a display component and the coordinate direction is a direction of light propagation within the waveguide body for light injected into an edge or corner of the waveguide body by a light source.3. The optical waveguide of claim 1 , wherein the spatially-varying volume hologram continuously maps an angle of injection of light into the waveguide body to a position from which the light is released from the waveguide body.4. The optical waveguide of claim 1 , wherein the waveguide body has a front face and a rear face parallel to and opposing the front face.5. The optical waveguide of claim 4 , wherein the spatially-varying volume hologram is a layer on the rear face and the light is released through the front face.6. The optical waveguide of claim 4 , wherein the spatially-varying volume hologram is a layer on the front face and the light is released through the front face.7. The optical waveguide of claim 4 , wherein the spatially-varying volume hologram is embedded in the optical waveguide and the light is released through the front face.8. The optical waveguide of claim 4 , wherein the front face is substantially planar and the rear face is substantially planar.9. ...

Light homogenization

An optical reflective device for homogenizing light including a waveguide having a first and second waveguide surface and a partially reflective element is disclosed. The partially reflective element may be located between the first waveguide surface and the second waveguide surface. The partially reflective element may have a reflective axis parallel to a waveguide surface normal. The partially reflective element may be configured to reflect light incident on the partially reflective element at a first reflectivity for a first set of incidence angles and reflect light incident on the partially reflective element at a second reflectivity for a second set of incident angles.

HOLOGRAPHIC REPRODUCING APPARATUS AND METHOD, HOLOGRAPHIC IMPLEMENTING DEVICE AND METHOD

The present disclosure relates to a holographic reproducing apparatus comprising: a light source configured to supply a reproducing light beam to be incident to a photorefractive crystal, wherein the photorefractive crystal has holographic images recorded therein in a plurality of different angles respectively; a reflective mirror configured to reflect the reproducing light beam emitted from the light source to the photorefractive crystal; and a driving mechanism connected to the reflective mirror and configured to drive the reflective mirror to move on a plane elliptical arc, the plane elliptical arc is defined by using the light source and the photorefractive crystal as two mathematical focuses and using a predetermined constant, so that an incident angle of the reproducing light beam to be incident to the photorefractive crystal varies to form a plurality of reproducing light beams in different angles to be incident to the photorefractive crystal in sequence. 1. A holographic reproducing apparatus comprising:a light source configured to supply a reproducing light beam to be incident to a photorefractive crystal, wherein the photorefractive crystal has holographic images recorded therein in a plurality of different angles respectively;a reflective mirror configured to reflect the reproducing light beam emitted from the light source to the photorefractive crystal; anda driving mechanism connected to the reflective mirror and configured to drive the reflective mirror to move on a plane elliptical arc, the plane elliptical arc is defined by using the light source and the photorefractive crystal as two mathematical focuses and using a predetermined constant, so that an incident angle of the reproducing light beam to be incident to the photorefractive crystal varies to form a plurality of reproducing light beams in different angles to be incident to the photorefractive crystal in sequence.2. The holographic reproducing apparatus according to claim 1 , wherein claim 1 , ...

HOLOGRAPHIC DISPLAY APPARATUS HAVING STEERABLE VIEWING WINDOW

A holographic display apparatus capable of steering a location of a viewing window according to a location of an observer is disclosed. The holographic display apparatus includes a light source; a spatial light modulator configured to modulate incident light and thereby reproduce the holographic image; a spatial filter configured to transmit only the holographic image; an eye tracker configured to track a pupil location of an observer; and a controller configured to adjust locations of the light source and the spatial filter in response to a change in the pupil location of the observer received from the eye tracker. The controller is configured to move the light source and the spatial filter simultaneously in the same direction by the same distance. 1. A holographic display apparatus comprising:a light source configured to output light;a spatial light modulator configured to modulate incident light and thereby reproduce a holographic image;a first lens configured to collimate light incident thereon from the light source;a second lens configured to focus the light modulated by the spatial light modulator;a retroreflective mirror configured to reflect collimated light incident thereon from the first lens and thereby change a travel direction of the light incident thereon by 180 degrees;a spatial filter configured to transmit only the holographic image;an eye tracker configured to track a pupil location of an observer; anda controller configured to adjust locations of the light source and the spatial filter in response to information identifying a change in the pupil location of the observer received from the eye tracker.2. The holographic display apparatus of claim 1 , wherein the light source and the spatial filter are disposed in a focal plane of the second lens claim 1 , andwherein the light source is disposed on an optical axis of the first lens and the spatial filter is disposed on an optical axis of the second lens.3. The holographic display apparatus of claim 1 ...

Holographic display

A holographic display includes: a light source; at least one beam steerer configured to control a propagation direction of a beam emitted from the light source; an optical element configured to condense a beam passing through the at least one beam steerer; and a spatial light modulator configured to form a three-dimensional (3D) image by modulating a beam passing through the at least one beam steerer.

Optical information recording device, optical information recording and reproducing device, optical information recording method, optical information recording and reproducing method, and optical element

The optical information recording and reproducing method realizes an increased number of multiplexing in recording and favorably stabilized signal recording in a manner of uniforming media consumption in angle-multiplexed recording by changing a phase of signal light on a pixel basis in a manner in which the speed of a phase change on a pixel basis is constant or is greater than or equal to a certain speed in a page and between pages when the driving speed of a phase mask changes at the time of recording. The optical information recording and reproducing method, while moving an optical element that adds phase information to a light flux which includes two-dimensional page data information in a direction that is perpendicular to an optical axis of the light flux, records the page data on the recording medium by adding the phase information to the light flux.

VOLUME HOLOGRAPHIC ELEMENT, VOLUME HOLOGRAPHIC ELEMENT MANUFACTURING METHOD, AND DISPLAY DEVICE

In a process of manufacturing the volume holographic element, a holographic material layer is irradiated with reference light from the side of a second substrate in the oblique direction, and the holographic material layer is vertically irradiated with object light from the side of a first substrate in an interference exposure process. Since a first translucent anti-reflective layer is formed on the first surface of the first substrate, it is difficult that a situation in which the reference light is reflected in the first surface in the oblique direction occurs. In addition, since a second translucent anti-reflective layer is formed on the second surface of the second substrate, it is difficult that a situation in which the object light is reflected in the second surface occurs. 1. A volume holographic element , comprising:a first translucent substrate;a second translucent substrate that faces the first translucent substrate;a first holographic material layer that is arranged between the first translucent substrate and the second translucent substrate; anda first translucent anti-reflective layer that is arranged on a first surface of the first translucent substrate, the first surface is a surface opposite to the first holographic material layer.2. The volume holographic element according to claim 1 , further comprising:a second translucent anti-reflective layer that is arranged on a second surface of the second translucent substrate, the second surface is a surface opposite to the first holographic material layer.3. The volume holographic element according to claim 2 , further comprising:the first holographic material layer, the first translucent substrate, and the second translucent substrate are bent on one side of a thickness direction.4. The volume holographic element according to claim 1 , further comprising:a first translucent film that is arranged between the second translucent substrate and the first holographic material layer; anda first translucent ...

LIGHT HOMOGENIZATION

An optical reflective device for homogenizing light including a waveguide having a first and second waveguide surface and a partially reflective element is disclosed. The partially reflective element may be located between the first waveguide surface and the second waveguide surface. The partially reflective element may have a reflective axis parallel to a waveguide surface normal. The partially reflective element may be configured to reflect light incident on the partially reflective element at a first reflectivity for a first set of incidence angles and reflect light incident on the partially reflective element at a second reflectivity for a second set of incident angles. 1. A device for homogenizing light , comprising:a waveguide having a first waveguide surface and a second waveguide surface parallel to the first waveguide surface; anda partially reflective element located between the first waveguide surface and the second waveguide surface, the partially reflective element having a reflective axis parallel to a waveguide surface normal.2. The device of claim 1 , wherein the partially reflective element is configured to reflect light incident on the partially reflective element at a first reflectivity for a first set of incidence angles and to reflect light incident on the partially reflective element at a second reflectivity for a second set of incident angles claim 1 , the first reflectivity being different from the second reflectivity.3. The device of claim 1 , wherein:the waveguide comprises a first layer having parallel plane surfaces and a second layer having parallel plane surfaces;the device further comprising an interior plane surface of the parallel plane surfaces of the first layer abuts an interior plane surface of the parallel plane surfaces of the second layer;wherein the first waveguide surface is a plane surface of the first layer opposite the interior plane surface of the parallel plane surfaces of the first layer; andthe second waveguide ...

HOLOGRAPHIC DISPLAY APPARATUS HAVING STEERABLE VIEWING WINDOW

A holographic display apparatus capable of steering a location of a viewing window according to a location of an observer is disclosed. The holographic display apparatus includes a light source; a spatial light modulator configured to modulate incident light and thereby reproduce the holographic image; a spatial filter configured to transmit only the holographic image; an eye tracker configured to track a pupil location of an observer; and a controller configured to adjust locations of the light source and the spatial filter in response to a change in the pupil location of the observer received from the eye tracker. The controller is configured to move the light source and the spatial filter simultaneously in the same direction by the same distance. 1. A holographic display apparatus comprising:a light source configured to output light;a spatial light modulator configured to modulate incident light and thereby reproduce a holographic image;a lens configured to collimate light incident thereon from the light source and to focus light incident thereon from the spatial light modulator;a retroreflective mirror configured to reflect collimated light incident thereon from the lens and thereby change a travel direction of the light incident thereon by 180 degrees;a spatial filter configured to transmit only the holographic image;an eye tracker configured to track a pupil location of an observer; anda controller configured to adjust locations of the light source and the spatial filter in response to information identifying a change in the pupil location of the observer received from the eye tracker.2. The holographic display apparatus of claim 1 , wherein the light source and the spatial filter are adjacent to each other in a focal plane of the lens.3. The holographic display apparatus of claim 1 , further comprising a stage claim 1 , wherein the light source and the spatial filter are mounted on the stage.4. The holographic display apparatus of claim 1 ,wherein the light ...

STRUCTURED ILLUMINATION MICROSCOPE AND IMAGE PROCESSING METHOD USING THE SAME

A structured illumination microscope includes a holographic image generator that generates a holographic image at a position overlapping an observation object. The structured illumination microscope further includes an image sensor that senses an interference image generated by overlapping the observation object with the holographic image. The structured illumination microscope additionally includes an image recovery processor that recovers an image of the observation object by comparing received data of the holographic image to received data of the interference image. 1. A structured illumination microscope comprising:a holographic image generator that generates a holographic image at a position overlapping an observation object;an image sensor that senses an interference image generated by overlapping the observation object with the holographic image; andan image recovery processor that recovers an image of the observation object by comparing received data of the holographic image to received data of the interference image.2. The structured illumination microscope of claim 1 , wherein the holographic image generator includes:a light source that provides light;a beam expander that expands a beam width of the light from the light source;a spatial light modulator that receives the expanded light to generate the holographic image; anda controller that transmits a signal to the spatial light modulator to generate the holographic image.3. The structured illumination microscope of claim 2 , wherein the holographic image generator further includes a reflector that reflects the light from the light source to overlap the holographic image with the observation object.4. The structured illumination microscope of claim 3 , wherein the holographic image generator further includes a condensing lens that reduces a size of the holographic image.5. The structured illumination microscope of claim 2 , wherein the light source includes a laser.6. The structured illumination microscope ...

Method To Translate A Non-Collimated Optical Beam

The present disclosure relates to systems and methods for translating optical beams. 1. A translational beam system comprising:a belt disposed to be translated along at least one axis, wherein the belt comprises a plurality of lenses coupled thereto; anda spatial light modulator configured to cause an object beam to pass through one or more of the plurality of lenses as the belt is translated, wherein that the one or more lenses cause the object beam to converge or diverge.2. The system of claim 1 , wherein the plurality of lenses are arranged in a sequence based on at least the direction of translation of the belt.3. The system of claim 1 , further comprising a plurality of rollers configure to cause the translation of the belt.4. The system of claim 1 , wherein the translation of the belt is continuous.5. The system of claim 1 , wherein the plurality of lenses comprise one or more holographic lenses.6. The system of claim 1 , further comprising:a holographic recording material, wherein the belt is spaced from the holographic recording material, wherein the plurality of lenses comprise one or more holographic lenses, wherein the spatial light modulator is configured to cause the object beam to pass through the one or more holographic lenses such that the one or more holographic lenses focus the object beam onto the holographic recording material; anda light source configured to cause a reference beam to be incident on the holographic recording material such that the holographic recording material stores information based on interference between the reference beam and the object beam.7. The system of claim 6 , wherein the holographic recording material comprises a photorefractive screen.8. The system of claim 6 , wherein the belt comprises one or more apertures configured to allow the reference beam to pass therethrough.9. The system of claim 6 , wherein the belt comprises one or more slit apertures configured to allow the reference beam to pass therethrough.10. The ...

LIGHT FIELD DISPLAY SYSTEM FOR VEHICLE AUGMENTATION

A light field (LF) display system for augmentation of a vehicle. The LF display system includes LF display modules that form a surface (e.g., interior and/or exterior) of a vehicle. The LF display modules each have a display area and are tiled together to form a seamless display surface that has an effective display area that is larger than the display area. The LF display modules present holographic content from the effective display area.

DISPLAY ARTICLE

A display article () includes a plurality of display areas (, and to ). Display areas adjacent to each other differ in at least one of an average hue, an average brightness and an average chroma and a first object to be displayed () is formed by a combination of the plurality of display areas (, and to ). At least one of the display areas (to ) includes a Fourier transform hologram (R, Y) configured to convert incident ray from a point light source or a laser light source into a second object to be displayed. 16-. (canceled)7. A display article comprising a plurality of display areas , wherein:display areas adjacent to each other differ in at least one of an average hue, an average brightness and an average chroma, and a first object to be displayed is formed by a combination of the plurality of display areas,at least one of the display areas includes a Fourier transform hologram configured to convert incident ray from a point light source or a laser light source into a second object to be displayed.8. The display article according to claim 7 , whereinthe Fourier transform hologram is an amplitude hologram.9. The display article according to claim 7 , whereinthe number of the display areas is three or more.10. The display article according to claim 7 , whereinthe plurality of display areas each have a pattern of interference fringes and function as a hologram,the display areas adjacent to each other differ in at least one of an average hue and an average chroma and each display area is perceived discretely from another display area adjacent to it, thereby the first object to be displayed is formed by a combination of the plurality of display areas,each display area includes a Fourier transform hologram configured to convert incident ray from a point light source or a laser light source into a second object to be displayed, andeach display area includes a colorant.11. The display article according to claim 7 , wherein{'sub': 'ab', 'a color difference ΔE*in the L*a*b* ...

Photopolymer composition

A photopolymer composition comprising a polymer matrix or a precursor thereof including a reaction product between (i) a (meth)acrylate-based (co)polymer in which a silane-based functional group is located in a branched chain and an equivalent weight of the silane-based functional group is 300 g/eq to 2000 g/eq, and (ii) a linear silane crosslinking agent; a photoreactive monomer; and a photoinitiator, a hologram recording medium using the same, an optical element using the hologram recording medium, and a holographic recording method. The photopolymer composition can more easily provide a photopolymer layer having improved durability against temperature and humidity while having a large refractive index modulation value.

Holographic display device and operating method thereof

Holographic display device and operation method thereof are provided. A holographic display device includes a light source device including a plurality of, light sources; and an imager including a plurality of imaging regions each corresponding to one light source. The imager includes at least one spatial light modulator configured to receive light from the plurality of light sources to form a plurality of holographic images.

HOLOGRAMS

There are provided volume holograms and combinations of lenticular lenses and holograms in particular for security applications. In embodiments, a volume hologram comprises a holographic medium () including a first optical interference structure which, upon illumination, replays a first image (); wherein the first image includes a lenticular lens layer () including an array of lenticules and a lenticular image layer () including first () and second () interlaced images corresponding with the array of lenticules. 1. A volume hologram including a holographic medium ,the holographic medium including a first optical interference structure which upon illumination replays a first image; andthe first image including a lenticular lens layer including an array of lenticules and a lenticular image layer including first and second interlaced images corresponding with the array of lenticules.2. A hologram according to claim 1 , wherein the first interlaced image includes first data and wherein the second interlaced image includes second data.3. (canceled)4. A hologram according to claim 2 , wherein the first and/or second data includes security claim 2 , verification claim 2 , validation claim 2 , identification and/or authentication data.57-. (canceled)8. A hologram according to claim 2 , wherein the first and second data contain co-encrypted elements.9. A hologram according to claim 1 ,wherein the first optical interference structure replays the first image upon illumination with a first wavelength of light; andwherein the holographic medium further includes a second optical interference structure which replays a second image upon illumination with a second wavelength of light.10. A hologram according to claim 1 ,wherein the first optical interference structure replays the first image upon illumination at a first angle; andwherein the holographic medium further includes a second optical interference structure which replays a second image upon illumination at a second angle.11 ...

LIGHT HOMOGENIZATION

An optical reflective device for homogenizing light including a waveguide having a first and second waveguide surface and a partially reflective element is disclosed. The partially reflective element may be located between the first waveguide surface and the second waveguide surface. The partially reflective element may have a reflective axis parallel to a waveguide surface normal. The partially reflective element may be configured to reflect light incident on the partially reflective element at a first reflectivity for a first set of incidence angles and reflect light incident on the partially reflective element at a second reflectivity for a second set of incident angles. 1. An optical system comprising:a waveguide;an input coupler on the waveguide, wherein the input coupler is configured to couple light into the waveguide and wherein the waveguide is configured to propagate the light via total internal reflection;an output coupler on the waveguide, wherein the output coupler is configured to couple the light out of the waveguide;a cross coupler on the waveguide, wherein the cross coupler is configured to redirect the light coupled into the waveguide by the input coupler; anda partially reflective element on the waveguide between the cross coupler and the output coupler, wherein the partially reflective element is configured to, prior to the light being coupled out of the waveguide by the output coupler, transmit a first portion of the light while reflecting a second portion of the light.2. The optical system of claim 1 , wherein the waveguide comprises first and second waveguide substrates and a medium layer between the first and second waveguide substrates.3. The optical system of claim 2 , wherein the first waveguide substrate has a surface facing the medium layer and wherein the partially reflective element comprises a coating on the surface of the first waveguide substrate.4. The optical system of claim 3 , wherein the cross coupler comprises holograms in the ...

HOLOGRAPHIC REPRODUCING APPARATUS AND METHOD, HOLOGRAPHIC IMPLEMENTING DEVICE AND METHOD

A holographic reproducing apparatus includes: a photorefractive crystal configured to have holographic images recorded in a plurality of different angles respectively; and a light source configured to supply a plurality of reproducing light beams to be incident to the photorefractive crystal in different angles, wherein the reproducing light beams have a same frequency and a same optical length as a reference light beam used when the holographic images are formed. In the holographic reproducing apparatus, each of the holographic images can be presented in different angles without interference therebetween, so that observers in a plurality of orientations can view the holographic images recorded in the photorefractive crystal, thus the problem that the viewing angle is unique in the holographic reproducing procedure is addressed. 120-. (canceled)21. A holographic reproducing apparatus comprising:a light source configured to supply reproducing light beams to be incident to a photorefractive crystal in different angles, wherein the photorefractive crystal have holographic images recorded therein in a plurality of different angles respectively, and the reproducing light beams have a same frequency and a same optical length as a reference light beam used when the holographic images are formed.22. The holographic reproducing apparatus according to claim 21 , further comprising a first driving mechanism claim 21 , wherein the light source is connected to the first driving mechanism claim 21 , and the first driving mechanism is configured to drive the light source to move on a circular arc with the photorefractive crystal as a center.23. The holographic reproducing apparatus according to claim 21 , further comprising a reflective mirror claim 21 , wherein the reflective mirror is arranged on an optical path of the reproducing light beam between the light source and the photorefractive crystal claim 21 , and the reflective mirror is configured to reflect the reproducing ...

HOLOGRAPHIC DISPLAY

Disclosed is a holographic display including a spatial light modulator (SLM) with pixels, the SLM pixels being on a substrate, the SLM including circuitry which is on the same substrate as the SLM pixels, the circuitry operable to perform calculations which provide an encoding of the SLM. 1. A holographic display device comprising:a spatial light modulator on which a hologram is provided and which is configured to reconstruct a three-dimensional scene comprising object points, where an object point occluded by another object point along a line of sight is considered within the hologram generation process.2. The holographic display device of claim 1 , wherein the three-dimensional scene is observable from at least one virtual observer window claim 1 , where the at least one observer window is separated into at least two segments.3. The holographic display device of claim 2 , wherein each object point is computed and reconstructed separately for different lines of sight according to the segments within the at least one virtual observer window claim 2 , where each object point is then visible or not visible when observing from different locations within the at least two segments of the at least one virtual observer window.4. The holographic display device of claim 1 , wherein for each object point a subhologram is computed claim 1 , where all subholograms generate the hologram in which the three-dimensional scene is encoded.5. The holographic display device of claim 4 , wherein an object point is encoded in different subholograms for different lines of sight from the at least one virtual observer window.6. The holographic display device of claim 2 , wherein the size of a segment of the at least one virtual observer window is about the size of a pupil of an eye of an observer.7. The holographic display device of claim 1 , wherein the three-dimensional scene is observable from at least one virtual observer window claim 1 , where for the at least one virtual observer ...

BACKLIGHT DEVICE, HOLOGRAPHIC DISPLAY INCLUDING THE SAME, AND METHOD OF MANUFACTURING HOLOGRAPHIC OPTICAL ELEMENT HAVING A MULTILAYERED STRUCTURE

A backlight device having a light guide, a first holographic optical element and a second holographic element are provided. The light guide plate guides light emitted by a light source towards the first holographic optical element. The first holographic optical element, which has a multi-layered structure, is provided on a first side of the light guide plate and reflects the light according to the wavelength ranges based on the characteristics of the multi-layered structure. The second holographic optical element, which concentrates light reflected by the first holographic optical element onto at least two points is provided on a second side of the light guide plate perpendicular to the first side. 1. A method of manufacturing a holographic optical element , the method comprising:attaching a first layer to a substrate;dividing the first layer into a plurality of areas and sequentially recording holograms by using light of a first color;attaching a second layer to the first layer; andrecording holograms on the second layer by using light of a second color and light of a third color.2. The method of claim 1 , further comprising performing pre-exposure on the first layer by using a light source that has a low coherence. This application is a Divisional application of U.S. application Ser. No. 15/691,091, filed Aug. 30, 2017, which claims priority from Korean Patent Application No. 10-2016-0150336, filed on Nov. 11, 2016 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.Exemplary embodiments relate to a backlight device for displaying holographic three-dimensional (3D) images, a holographic display that includes the backlight device, and a method of manufacturing a holographic optical element.As many 3D films have recently been released, much research has been carried out on technology related to apparatuses for displaying 3D images. Well-known methods of forming 3D images include a stereoscopic ...

Display with nanostructure angle-of-view adjustment structures

A display may have an array of pixels. Each pixel may have a light-emitting diode such as an organic light-emitting diode or may be formed from other pixel structures such as liquid crystal display pixel structures. The pixels may emit light such as red, green, and blue light. An angle-of-view adjustment layer may overlap the array of pixels. During operation, light from the pixels passes through the angle-of-view adjustment layer to a user. The viewing angle for the user is enhanced as the angular spread of the emitted light from the pixels is enhanced by the angle-of-view adjustment layer. The angle-of-view adjustment layer may be formed from holographic structures recorded by applying laser beams to a photosensitive layer or may be formed from a metasurface that is created by patterning nanostructures on the display using printing, photolithography, or other patterning techniques.

Optical waveguide including spatially-varying volume hologram

An optical waveguide includes a waveguide body and a spatially-varying volume hologram. The volume hologram increases, in a coordinate direction along the volume hologram, an angle of incidence by which light propagating in the waveguide body via total internal reflection is released from the waveguide body. The optical waveguide may form part of an optical system that includes one or more light sources and/or optical sensors.

Increasing an area from which reconstruction from a computer generated hologram may be viewed

Waveguide structure, back light unit including the same, and display apparatus including the waveguide structure

Provided is a waveguide structure (15) including an output grating (500), a polarization conversion element (410) provided parallel to the output grating (500), and a polarization separation element (310) provided between the output grating (500) and the polarization conversion element (410), wherein the polarization separation element (310) is configured to transmit, to the output grating (500), light (L1) having a first polarization direction among light incident on the polarization separation element (310), and reflect, to the polarization conversion element (410), light (L2) having a second polarization direction different from the light having the first polarization direction among the light incident on the polarization separation element (310).(Fig. 13)

Light homogenization

An optical reflective device for homogenizing light including a waveguide having a first and second waveguide surface and a partially reflective element is disclosed. The partially reflective element may be located between the first waveguide surface and the second waveguide surface. The partially reflective element may have a reflective axis parallel to a waveguide surface normal. The partially reflective element may be configured to reflect light incident on the partially reflective element at a first reflectivity for a first set of incidence angles and reflect light incident on the partially reflective element at a second reflectivity for a second set of incident angles.

Holographic wide field of view display

A head-mounted display device comprises a rendering engine configured to generate a hologram representative of a three-dimensional object. The hologram includes depth information that causes the three-dimensional object to be rendered with a focus that is determined by the depth information. The device also includes a spatial light modulator that modulates light from a light source as indicated by the hologram. A switchable hologram comprises multiple stacked switchable gratings. Each of the stacked switchable gratings is associated with one or more resulting exit pupil locations on a viewing surface. The system also comprises an eye tracker configured to map a viewing direction of a user's eye to a viewing location on the viewing surface. A processor is configured to activate a particular switchable grating within the switchable transmission hologram that is associated with an exit pupil location that aligns with the viewing location.

Backlight device, holographic display including the same, and method of manufacturing holographic optical element having a multilayered structure

A backlight device having a light guide, a first holographic optical element and a second holographic element are provided. The light guide plate guides light emitted by a light source towards the first holographic optical element. The first holographic optical element, which has a multi-layered structure, is provided on a first side of the light guide plate and reflects the light according to the wavelength ranges based on the characteristics of the multi-layered structure. The second holographic optical element, which concentrates light reflected by the first holographic optical element onto at least two points is provided on a second side of the light guide plate perpendicular to the first side.

Light homogenization

An optical reflective device for homogenizing light including a waveguide having a first and second waveguide surface and a partially reflective element is disclosed. The partially reflective element may be located between the first waveguide surface and the second waveguide surface. The partially reflective element may have a reflective axis parallel to a waveguide surface normal. The partially reflective element may be configured to reflect light incident on the partially reflective element at a first reflectivity for a first set of incidence angles and reflect light incident on the partially reflective element at a second reflectivity for a second set of incident angles.

Holographic pattern generation for head-mounted display (HMD) eye tracking using an array of parabolic mirrors

A system for making a holographic medium for use in generating light patterns for eye tracking includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium, a second set of optical elements configured to transmit the second portion of the light for providing a second wide-field beam, and a plurality of parabolic reflectors optically coupled with the second set of optical elements and configured to receive the second wide-field beam and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.

Holographic pattern generation for head-mounted display (HMD) eye tracking using a diffractive optical element

A system for making a holographic medium for use in generating light patterns for eye tracking includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium and one or more diffractive optical elements configured to receive the second portion of the light and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.

显示装置和产生图像的方法

本发明提供显示装置和产生图像的方法。来自激光光源的阵列的光被扩展以便覆盖DMD或者其它调制器的调制面。该扩展可以例如通过变化的曲率阵列的小透镜来被执行，每个激光对准到小透镜之一。来自相邻和/或附近的光源的光在调制器处交迭。激光器以不同的能量/亮度水平被通电使得照射调制器的光本身被调制(局部地调光)。调制器然后进一步调制局部调光的光以便产生期望的图像。根据本发明的投影仪可以利用例如顺序地照射的单个调制器或者同时照射的分离的原色调制器。

Holographic pattern generation for head-mounted display (HMD) eye tracking using a prism array

A system for making a holographic medium includes a light source configured to provide light, and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium, a second set of optical elements configured to transmit the second portion of the light for providing a second wide-field beam, and a plurality of prisms optically coupled with the second set of optical elements and configured to receive the second wide-field beam and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.

Holographic pattern generation for head-mounted display (HMD) eye tracking using a lens array

A system for making a holographic medium includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium, a second set of optical elements configured to transmit the second portion of the light through for providing a second wide-field beam, and a plurality of lenses optically coupled with the second set of optical elements configured to receive the second wide-field beam and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.

全息显示装置及电子设备

本申请涉及显示技术领域，具体而言，涉及一种全息显示装置及电子设备。该全息显示装置可包括光源、光传输结构、第一光子晶体组及空间光调制器，光传输结构具有入光区域和出光区域；第一光子晶体组设于入光区域，第一光子晶体组包括多种光子晶体，以用于将光源发出的光分成多种不同颜色的光线，且多种不同颜色的光线经入光区域传输至光传输结构内，并经出光区域射出；空间光调制器设于出光区域，用于对从出光区域射出的多种不同颜色的光线进行调制，以形成全息图像。该技术方案可简化全息显示装置的结构，减小全息显示装置的体积，从而利于全息显示装置集成到电子设备中。

Hologramų spausdinimo būdas ir įrenginys

Variable shear with volume holograms

An optical device including a first rigid substrate, a flexible holographic optical element, a transparent flexible material having a variable shear transmission property across an in-plane direction of the flexible holographic optical element, and a second rigid substrate, where the flexible holographic optical element and the transparent flexible material are located between the first and second rigid substrates, where the variable shear transmission property of the transparent flexible material transmits variable amounts of a shear force applied to the first or second rigid substrates across the in-plane direction of the flexible holographic optical element.

Pupil expansion

Holographic pattern generation for head-mounted display (hmd) eye tracking using a diffractive optical element

A system for making a holographic medium for use in generating light patterns for eye tracking includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium and one or more diffractive optical elements configured to receive the second portion of the light and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.

Hologram duplication method

A hologram duplication method is disclosed which makes it easy to duplicate a large number of holograms from a volume-recorded hologram, particularly from a hologram recorded in a recording medium of the disk type or the card type. N card type master recording media are prepared, and data pages are individually recorded on the N disk type master recording media without being multiplexed by changing the angle of a reference light beam among the N disk type master recording media. Thereafter, the data page recorded on each of the disk type master recording media is recorded on a common disk type duplication recording medium so that the data pages are N-multiplex recorded finally on the disk type duplication recording medium.

도광 구조, 이를 포함하는 백라이트 유닛, 및 이를 포함하는 디스플레이 장치

도광 구조는 출력 그레이팅, 출력 그레이팅과 평행하게 배치되는 편광 변환 요소, 및 출력 그레이팅과 편광 변환자 사이에 제공되는 편광 분리 요소를 포함하되, 편광 분리 요소는 편광 분리 요소에 입사하는 광의 제1 편광 방향을 갖는 광을 출력 그레이팅에 전달하고, 제1 편광 방향을 갖는 광과 다른 제2 편광 방향을 갖는 광을 편광 변환 요소로 반사한다.

Material de lámina polimérico mejorado para su uso en la obtención de documentos de seguridad poliméricos tales como billetes de banco

Material de lámina polimérico mejorado (10) para su uso en la obtención de documentos de seguridad poliméricos tales como billetes de banco, que está compuesto por un polímero o sustrato polimérico (12) que tiene un grosor mayor de o igual a aproximadamente 60 micrómetros (μm) y uno o más dispositivos de seguridad ópticos integrados que proyectan una o más imágenes sintéticas, estando integrados el uno o más dispositivos de seguridad ópticos en la totalidad o parte del sustrato (12), en el que el uno o más dispositivos de seguridad ópticos integrados están alineados con una o más ventanas transparentes y una o más regiones opacas sobre el sustrato y están compuestos por una disposición de elementos de enfoque híbridos refractantes/reflectantes metalizados (52) situada por debajo de una primera disposición de iconos de imagen sobre una superficie superior del sustrato, y una segunda disposición de iconos de imagen situada directamente por debajo de la primera disposición de iconos de imagen y la disposición de elementos de enfoque híbridos refractantes/reflectantes metalizados (52) sobre una superficie inferior del sustrato, en el que una o más regiones opacas están situadas en la segunda disposición de iconos de imagen, en el que se proyectan una o más imágenes sintéticas por el material de lámina polimérico bajo luz reflejada y en luz transmitida, en el que la una o más regiones opacas permiten una vista de luz reflejada, y en el que la una o más ventanas transparentes permiten una vista de luz transmitida, que domina la vista de luz reflejada.

头戴式透视显示器及记录体积全息透镜的方法

本申请公开了一种头戴式透视显示器及记录体积全息透镜的方法。更具体地，本申请涉及头戴式透视显示器，该头戴式透视显示器使用记录的基板引导的全息连续透镜(SGHCL)和具有窄光谱带源或激光照射的微型显示器。体积SGHCL的高衍射效率产生非常高的虚拟图像亮度。

Device and method for generating hologram

본 발명에서는 3차원 객체로부터 방출되는 광을 집속시키고, 광을 검출하며, 광을 집속시키는 렌즈에 대한 정보 및 광을 검출하는 센서에 대한 정보에 대응하는 착란원 크기의 임계값을 결정하고, 착란원 크기의 임계값에 기반하여, 3차원 객체를 통과하는 복수의 평면의 위치를 결정하며, 복수의 평면마다 3차원 객체에 대한 객체 정보를 획득하고, 객체 정보에 기반하여, 3차원 객체에 대한 홀로그램 영상을 생성함으로써, 인간의 시각적 시스템에 대한 모델링에 기초한 피사계 심도 개념을 이용함으로써, 3차원 객체에 대한 영상 정보를 더 빠르게 획득할 수 있으면서, 보다 더 높은 화질의 홀로그램 영상을 생성할 수 있는 인간 시각 시스템을 모델링한 홀로그램 생성 방법을 제공할 수 있다. In the present invention, a threshold value of the size of a circle of confusion is determined by focusing light emitted from a three-dimensional object, detecting the light, and corresponding information about a lens for focusing the light and information about a sensor for detecting the light, and Based on the threshold value of the circle size, the position of a plurality of planes passing through the three-dimensional object is determined, object information about the three-dimensional object is obtained for each of the plurality of planes, and based on the object information, the three-dimensional object is By generating a holographic image, by using the concept of depth of field based on modeling for the human visual system, image information about a three-dimensional object can be acquired faster and a higher quality holographic image can be generated. It is possible to provide a method for generating a hologram by modeling the visual system.

Holographic display

화소를 가진 공간 광변조기(SLM)를 포함하며, 상기 SLM 화소는 기판상에 있고, 상기 SLM은 상기 SLM 화소와 동일한 기판상에 있는 회로를 포함하고, 상기 회로는 상기 SLM의 인코딩을 제공하는 계산을 수행하도록 동작하는 홀로그래픽 디스플레이가 제공된다. Wherein the SLM pixel is on a substrate and the SLM comprises circuitry on the same substrate as the SLM pixel, the circuit comprising a calculation that provides the encoding of the SLM Lt; RTI ID = 0.0 > a < / RTI >

입체영상 표시장치

본 발명은 입체영상 표시장치에 관한 것으로서, 특히, 이미지패널기억 홀로그래픽광학소자(IPM-HOE)로부터 반사된 광이, 평행광 상태로 이미지패널조명 광학소자(IPI-HOE)에 조사될 수 있도록, 이미지패널기억 홀로그래픽광학소자(IPM-HOE)와 이미지패널조명 광학소자(IPI-HOE)의 사이에 평판형 거울(Mirror)을 구비한, 입체영상 표시장치를 제공하는 것을 기술적 과제로 한다. 이를 위해 본 발명에 따른 입체영상 표시장치는, 이미지가 출력되는 이미지 패널; 상기 이미지 패널 전면에 백라이트(Back Light)를 공급하기 위한 이미지패널조명 홀로그래픽광학소자(IPI-HOE); 평행광(Collimated Beam)을 발생시키는 광원; 상기 IPI-HOE의 형태를 기억하고 있으며, 상기 광원으로부터 출력된 광을 반사시키기 위한 이미지패널기억 홀로그래픽광학소자(IPM-HOE); 및 평판형태의 거울로 구성되어 상기 IPM-HOE로부터 반사되어온 광을 상기 IPI-HOE로 반사시킬 수 있는 평판형 거울을 포함한다.

显示系统和显示方法

提供了一种显示系统和显示方法。所述显示系统包括投影单元和眼部追踪单元。所述投影单元包括投影光源、投影透镜和空间光调制器；在所述投影透镜的光轴方向上，所述投影透镜包括与所述空间光调制器重叠的第一透镜部分和不与所述空间光调制器重叠的第二透镜部分。所述眼部追踪单元包括相机；所述相机的成像光路穿过所述第二透镜部分。本发明实施例的显示系统和显示方法能够有利地使用在包括全息显示的显示领域中，简化光学设计，获得紧凑和高效的光学系统。

プロジェクタ、ならびにシネマ、エンターテイメントシステム、ディスプレイを含む他の発光装置のためのレーザ光源の局所的調光

光瞳扩展器

一种显示装置，包括图片生成单元、波导光瞳扩展器和观看者跟踪系统。图片生成单元包括第一和第二显示通道、控制器。第一和第二显示通道分别布置成输出第一和第二颜色的第一和第二空间调制光。第一和第二空间调制光分别对应于第一和第二图片。波导光瞳扩展器包括一对平行反射表面。波导光瞳扩展器限定输入端口和观看窗口。输入端口布置为接收第一和第二空间调制光。第一反射表面的反射率由渐变涂层提供。渐变涂层部分地透射第一和第二颜色的光。渐变涂层的透射率是非消色差的。观看者跟踪系统布置为确定观看窗口内的观看位置。控制器布置为基于由观看者跟踪系统确定的观看位置来将从观看位置看到的第一和第二图片的色彩平衡保持为基本恒定。

Lighting device

用于制造聚合物安全文件的改善的聚合物片材

本申请提供了一种用于制造聚合物安全文件例如银行票据的改善的聚合物片材。本发明的聚合物片材具有一个或更多个集成和/或施加的光学安全设备。还提供了使用这些改善的聚合物片材制造的聚合物安全文件。

Lighting device for headlights with a phase modulator

提供了一种被配置成生成用于照亮场景的可控光束的照明设备。该设备包括被配置成向入射光的光束提供可选择的相位延迟分布的可寻址空间调光器。该设备还包括被配置成接收来自空间调光器的经相位调制的光并且形成光分布的傅立叶光学器件。该设备还进一步包括被配置成投射光分布以形成作为所述可控光束的照明图案的投影光学器件。

Holographic display and holographic image forming method

公开了一种全息显示器以及由所述全息显示器执行的形成全息图像的方法。全息显示器包括电可寻址空间光调制器(EASLM)；在EASLM上布置的衍射光学元件(DOE)掩模阵列；以及控制器，被配置为操作全息显示器以形成全息图像，其中，所述控制器还被配置为：寻址EASLM，以通过打开对应的EASLM像素来对形成全息图像体素集合所需的DOE掩模阵列进行背光照明。

Local dimming of laser light sources for projectors and other light emitting devices including cinema, entertainment systems, displays

Display device

显示装置。图像的亮度不均和颜色不均较少。本发明的显示装置具有：图像光生成装置；光学系统，从图像光生成装置射出的图像光入射至该光学系统。光学系统具有沿着图像光的光路依次配置的第1光学部、第2光学部、第3光学部以及第4光学部，第1光学部具有正屈光力，第2光学部包含具有正屈光力的第1衍射元件，第3光学部具有正屈光力，第4光学部包含具有正屈光力并形成出射光瞳的第2衍射元件。第2衍射元件由体积全息元件构成，在体积全息元件的剖视图中，干涉条纹的间距和斜率从第2衍射元件的一端朝向另一端连续地发生变化。

Optical module

레이저 광원(50)이 생성한 레이저빔(L50)을, 광빔 주사 장치(60)에 의해 반사시켜, 홀로그램 기록 매체(45)에 조사한다. 홀로그램 기록 매체(45)에는, 주사 기점(B)에 수렴하는 참조광을 사용하여 산란판의 이미지(35)를 홀로그램으로 기록 한다. 광빔 주사 장치(60)는, 레이저빔(L50)을 주사 기점(B)에서 굴곡시켜 홀로그램 기록 매체(45)에 조사한다. 이 때, 레이저빔의 굴곡 태양을 시간에 따라 변화시켜, 굴곡된 레이저빔(L60)의 홀로그램 기록 매체(45)에 대한 조사 위치가 시간에 따라 변화하도록 주사한다. 빔의 조사 위치에 관계없이, 홀로그램 기록 매체(45)로부터의 회절광(L45)은, 동일한 산란판의 재생 이미지(35)를 동일한 위치에 재생한다. 조명 대상물(70)의 수광면(R)에는, 홀로그램의 재생 이미지(35)에 의해 스펙클이 억제된 조명 스폿이 형성된다. The laser beam L50 generated by the laser light source 50 is reflected by the light beam scanning device 60 and irradiated onto the hologram recording medium 45. [ In the hologram recording medium 45, the image 35 of the scattering plate is recorded as a hologram using the reference light converging on the scanning point B. The light beam scanning device 60 bends the laser beam L50 at the scanning point B and irradiates the hologram recording medium 45 with the laser beam L50. At this time, the bending mode of the laser beam is changed with time, and the irradiation position of the bent laser beam L60 with respect to the hologram recording medium 45 changes with time. Regardless of the irradiation position of the beam, the diffracted light L45 from the hologram recording medium 45 reproduces the reproduced image 35 of the same scatter plate at the same position. On the light receiving surface (R) of the illumination target (70), an illumination spot in which the speckle is suppressed is formed by the reproduction image (35) of the hologram.