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 ...

Verfahren zum Schreiben holographischer Pixel

Die Erfindung betrifft ein Verfahren zum Schreiben holographischer Pixel in einem Holographic Recordable Film, welcher eine photochemisch und/oder photophysikalisch durch Belichtung veränderbare Photokomponente enthält, wobei der Holographic Recordable Film über einem Reflexionsmaster positioniert wird, wobei ein Primärlichtstrahl auf den Holographic Recordable Film gelenkt wird, wobei der Primärlichtstrahl den Holographic Recordable Film durchdringt und an dem Reflexionsmaster zu einem Reflexionslichtstrahl reflektiert wird und wobei der Primärlichtstrahl und der Reflexionslichtstrahl in dem Holographic Recordable Film innerhalb einer Interferenzzone interferieren und die Photokomponente in der Interferenzzone das holographische Pixel bildend verändern. Sie ist dadurch gekennzeichnet, dass zwischen dem Holographic Recordable Film und dem Reflexionsmaster ein Transmissionshologramm angeordnet wird und dass das Transmissionshologramm den Primärlichtstrahl und/oder den Reflexionslichtstrahl mit der Maßgabe beugt, dass die Interferenzzone eine größere laterale Fläche, bezogen auf Richtungen orthogonal zur Flächennormalen des Holographic Recordable Films, aufweist als in Abwesenheit des Transmissionshologramms. The invention relates to a method for writing holographic pixels in a holographic recordable film containing a photochemically and / or photophysically photo-changeable photocomponent, wherein the holographic recordable film is positioned over a reflection master whereby a primary light beam is directed onto the holographic recordable film, wherein the primary light beam penetrates the holographic recordable film and is reflected at the reflection master to a reflected light beam and wherein the primary light beam and the reflected light beam in the holographic recordable film interfere within an interference zone and the photocomponent in the interference zone changes the holographic pixel. It is characterized in that a transmission hologram is arranged between ...

Improvements in or relating to holograms

An integral direct viewing hologram device and an article useful in the manufacture of hologram devices are predicated upon a particular set of components grouped according to a number of permutations. The hologram device comprises a venetian blind film having a hologram embossed on or bonded onto one surface and a plane grating embossed on or bonded onto the other surface, and the article useful in the manufacture of hologram devices comprises a venetian blind film with a plane grating embossed or bonded on one side.

IMPROVEMENTS IN OR RELATING TO HOLOGRAMS

This invention is predicated upon a particular set of components which may be grouped according to a number of permutations each of which has a specific application. <??>A hologram viewing apparatus, an integral direct viewing hologram device and an article useful in the manufacture of hologram devices are provided by this invention. <??>The hologram viewing apparatus comprises a housing (20) enclosing a light source (21) which illuminates a screen located in or on a wall of the housing (20), the screen consisting of at least a plane grating (28). <??>The integral direct viewing hologram device comprises a venetian blind film (10) having a hologram (11) embossed on or bonded onto one surface and a plane grating (28) embossed or bonded onto the other surface. The device can be direct viewed in white light and a multi-coloured image can be produced by the provision of a plurality of holograms (11, 12) which are made using different coloured light. <??>The article useful in the manufacture of hologram devices comprises a venetian blind film embossed on one side with a plane grating.

Sub-micron 3d holographic lithpgraphy

HOLOGRAPHIC OPTICAL DEVICES

The invention provides a holographic optical device, including a light-transmissive substrate (6); a first holographic optical element (H1) carried by the substrate; at least one second holographic optical element (H2) carried by the substrate laterally of the first holographic optical element, and at least one third holographic optical element (H3) carried by the substrate laterally displaced from the first and second holographic optical elements; wherein the center of at least one of the first, second or third holographic optical elements is located outside a single, straight line.

NEAR EYE 3D DISPLAY WITH SEPARATE PHASE AND AMPLITUDE MODULATORS

Augmented reality glasses include near eye displays the include sources of imagewise amplitude modulated light optical coupled to spatial phase modulators or active zone plate modulators and optically coupled to eye coupling optics. The sources of imagewise amplitude modulated light can include emissive 2D display panels or light sources coupled to imagewise amplitude modulators. The eye coupling optics can include volume holographic diffraction gratings.

MADE SAFE DOCUMENT, SYSTEM OF MANUFACTURE AND SYSTEM OF READING OF CEDOCUMENT

SETUPAND METHODS FOR STORING DATA IN AND READING OUT DATA FROM A HOLOGRAPHIC STORAGE ARRANGEMENT.

A setup for storing data in and reading out data from a holographic storage medium comprises a light source (12) for emitting light (14) having a wavelength γ, a modulator (16) for modulating the light emitted by the light source, projection means (18) for forming a signal beam (20) from the modulated light and for focusing the signal beam into the holographic storage medium (26) and a light source (12) for emitting a reference beam (22, 32) into the holographic storage medium, the reference beam having a wavelength γ. The setup comprises a grating (28) and a γ/4-layer (30) arranged such that the incident reference beam (22, 32) is diffracted by the grating, upon which the diffracted beam (34) again travels through the γ/4-layer. © KIPO & WIPO 2009 ...

HOLOGRAM VIEWING ARRANGEMENT AND ALIGNMENT DEVICE

The present invention relates to a hologram viewing arrangement, to an alignment device, to a display device, to a device for aligning first and second members and to a device for aligning an optical beam with a desired target. A hologram viewing arrangement comprising a pixellated phase mask substrate (20) and a pixellated hologram display substrate (40), wherein the hologram display substrate is arranged to store data representing at least two distinct images (3a - 3d) , the arrangement being such that disposing the phase mask in a first position with respect to the display substrate enables one of the at least two images to be visible and disposing the phase mask in a second position with respect to the display substrate enables another of the at least two images to be visible.

ПОЛИУРЕТАНОВЫЕ КОМПОЗИЦИИ НА ОСНОВЕ ФОРПОЛИМЕРА ДЛЯ ИЗГОТОВЛЕНИЯ ГОЛОГРАФИЧЕСКИХ СРЕД

FIELD: chemistry. SUBSTANCE: claimed invention relates to polyurethane composition for production of holographic media. Composition contains: (A) polyisocyanate component, which contains at least one polyurethane prepolymer with terminal NCO-groups exclusively on base of oligomeric or polymeric dysfunctional compounds, reaction-able with respect to isocyanates, with average molecular weights from 200 to 10000 g/mole, in which NCO-groups are bound with primary residues, (B) polymers, reaction-able with respect to isocyanates, (C) compounds, which contain groups, which when exposed to actinic irradiation react with ethylene-unsaturated compounds with polymerisation (radiation - solidified groups), and themselves do not contain NCO-groups, (D) stabilisers of radicals and (E) photoinitiators, with compounds, applied in component C), having refractive index n D   20 >1.55. Also described are: method of producing medium of recording of visual holograms, application of such medium and method of hologram recording. EFFECT: obtaining novel polyurethane composition, in which good compatibility of polymeric matrix with recording monomer and other components, contained in composition is ensured, which leads to improvement of hologram brightness. 12 cl, 2 dwg, 7 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C08G 18/10 C08G 18/32 C08G 18/48 C08G 18/66 C08G 18/67 C08G 18/78 ФЕДЕРАЛЬНАЯ СЛУЖБА C08L 75/04 ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ G03F 7/00 G11B 7/245 (12) ОПИСАНИЕ (21)(22) Заявка: (13) 2 515 549 C2 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2011116997/04, 24.09.2009 (24) Дата начала отсчета срока действия патента: 24.09.2009 01.10.2008 EP 08017273.7 R U Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): ВАЙЗЕР Марк Штефан (DE), РЕЛЛЕ Томас (DE), БРУДЕР Фридрих-Карл (DE), ФЭККЕ Томас (DE), ХЕНЕЛЬ Деннис (DE), ДЕРР Зебастиан (DE), ШТЁККЕЛЬ Николас (DE) (43) Дата публикации заявки: 10.11.2012 Бюл. ...

ПОЛИУРЕТАНОВЫЕ КОМПОЗИЦИИ НА ОСНОВЕ ФОРПОЛИМЕРА ДЛЯ ИЗГОТОВЛЕНИЯ ГОЛОГРАФИЧЕСКИХ СРЕД

FIELD: chemistry. SUBSTANCE: claimed invention relates to polyurethane composition for production of holographic media. Composition contains: (A) polyisocyanate component, which contains at least one polyurethane prepolymer with terminal NCO-groups exclusively on base of oligomeric or polymeric dysfunctional compounds, reaction-able with respect to isocyanates, with average molecular weights from 200 to 10000 g/mole, in which NCO-groups are bound with primary residues, (B) polymers, reaction-able with respect to isocyanates, (C) compounds, which contain groups, which when exposed to actinic irradiation react with ethylene-unsaturated compounds with polymerisation (radiation - solidified groups), and themselves do not contain NCO-groups, (D) stabilisers of radicals and (E) photoinitiators, with compounds, applied in component C), having refractive index n D   20 >1.55. Also described are: method of producing medium of recording of visual holograms, application of such medium and method of hologram recording. EFFECT: obtaining novel polyurethane composition, in which good compatibility of polymeric matrix with recording monomer and other components, contained in composition is ensured, which leads to improvement of hologram brightness. 12 cl, 2 dwg, 7 ex Сс9 2515549 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ С08С С08С С08С С08С С08С С08С СО8Г, СОЗЕ СПИВ ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (19) (11) 3% 5х 5х << << & 5 (13) : ах $ ВО хо ео (50) МПК 18/10 18/32 18/48 18/66 18/67 18/78 75/04 7/00 7/245 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (12) СКОРРЕКТИРОВАННОЕ ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ Примечание: библиография отражает состояние при переиздании (21)(22) Заявка: 2011116997/04, 24.09.2009 (24) Дата начала отсчета срока действия патента: 24.09.2009 Приоритет(ы): (30) Конвенционный приоритет: 01.10.2008 ЕР 08017273.7 (43) Дата публикации заявки: 10.11.2012 Бюл. № 31 (45) Опубликовано: 10.05.2014 (15) Информация о ...

ПОЛИУРЕТАНОВЫЕ КОМПОЗИЦИИ НА ОСНОВЕ ФОРПОЛИМЕРА ДЛЯ ИЗГОТОВЛЕНИЯ ГОЛОГРАФИЧЕСКИХ СРЕД

... 1. Полиуретановая композиция, содержащая: ! A) полиизоцианатный компонент, содержащий по меньшей мере один полиуретановый форполимер с терминальными NCO-группами исключительно на основе диолов, у которого NCO-группы являются связанными с первичными остатками, ! B) полимеры, реакционноспособные по отношению к изоцианатам, ! C) соединения, содержащие группы, которые при действии актиничного излучения реагируют с этиленненасыщенными соединениями с полимеризацией (радиационно отверждаемые группы), а сами не содержат NCO-групп, ! D) стабилизаторы радикалов, ! Е) фотоинициаторы, ! F) при необходимости катализаторы, ! G) при необходимости, вспомогательные вещества и добавки. ! 2. Полиуретановая композиция по п.1, отличающаяся тем, что в А) используются NCO-функциональные форполимеры с уретановыми, аллофанатными, биуретовыми и/или амидными группами. ! 3. Полиуретановая композиция по п.1, отличающаяся тем, что в А) в качестве форполимеров с изоцианатными группами используются уретаны, алофанаты ...

Holographic optical devices

LIGHT MODULATION DEVICE FOR A DISPLAY FOR REPRESENTING TWO- AND/OR THREE-DIMENSIONAL IMAGE CONTENT

For displaying two and/or three-dimensional Image display of the content of the optical modulator device

Method of, using a skew mirror and method of manufacturing the same

COMPACT HOLOGRAPHIC DISPLAY DEVICE

A holographic display device (15) comprises an OLED array (12) writing onto an OASLM (13), the OLED array and OASLM forming adjacent layers. The OASLM encodes a hologram and a holographic reconstruction is then generated by the device when an array of read beams (10) illuminates the OASLM. The OASLM is suitably controlled by the OLED array. An advantage of the device is that it lends itself to compactness.

Holographic optical devices

The invention provides a holographic optical device, including a light-transmissive substrate (6); a first holographic optical element (H1) carried by the substrate; at least one second holographic optical element (H2) carried by the substrate laterally of the first holographic optical element, and at least one third holographic optical element (H3) carried by the substrate laterally displaced from the first and second holographic optical elements; wherein the center of at least one of the first, second or third holographic optical elements is located outside a single, straight line.

Compact holographic display device

A holographic display device comprises an OLED array writing onto an OASLM, the OLED array and OASLM forming adjacent layers. The OASLM encodes a hologram and a holographic reconstruction is then generated by the device when an array of read beams illuminates the OASLM. The OASLM is suitably controlled by the OLED array. An advantage of the device is that it lends itself to compactness.

Non-reactive fluoro compound and photopolymer composition comprising the same

A photopolymerizable composition including: a polymer matrix or a precursor thereof containing a reaction product of an acrylate-based polyol and a compound containing at least one isocyanate group; a photoreactive monomer; and a non-reactive fluoro compound and a photoinitiator; a hologram recording medium produced from the composition; an optical element including the hologram recording medium; and a method of recording a hologram using the photopolymerizable composition.

OPTICAL COMPONENT USED FOR FLAME EFFECT IN HEATING APPARATUS

An optical display apparatus comprises a non-isotropic holographic diffusing screen (1), a light source (3) for projecting a pattern of light onto the screen, and a reflector (2). The screen has the property of being substantially transparent, except for light from the source (3) which is diffused, diffracted and then reflected back through the screen by the reflector (2). The screen (1) is substantially transparent to the reflected light. The apparatus can be used as a decorative display, for advertising purposes and in a flame effect fire. The pattern of light projected from the source is configured to achieve the desired optical effect.

Compact three dimensional image display device

EXAMINATION SAFETY MEMBER

Near eye 3D display with separate phase and amplitude modulators

Augmented reality glasses include near eye displays the include sources of imagewise amplitude modulated light optical coupled to spatial phase modulators or active zone plate modulators and optically coupled to eye coupling optics. The sources of imagewise amplitude modulated light can include emissive 2D display panels or light sources coupled to imagewise amplitude modulators. The eye coupling optics can include volume holographic diffraction gratings.

HOLOGRAM OPTICAL ELEMENT AND SURFACE LIGHT SOURCE DEVICE USING IT

A thin hologram optical element being high in light transmittance and excellent to handle, and a surface light source device using it. A hologram optical element which has a small wavelength dependency by a bending angle, and prevents the spectral separation of a white light incident from an oblique direction to allow the light to exit after bent in a vertical direction. A hologram optical element, wherein when lights having three wavelengths, λ1, λ2, λ3, are incident at an angle Θi in a transmitting diffraction lattice - where λ1, λ2, λ3 are respectively in the ranges, 0.46<=λ1<=0.50 μm (blue light), 0. 53<=λ2<=0.57 μm (green light), 0.60<=λ 3<=0.64 μm (red light), a diffraction angle that maximizes the diffraction efficiency of each wavelength falls within a range, - 5° to +5°. © KIPO & WIPO 2007 ...

Method and device for the layered production of thin volume grid stacks, and beam combiner for a holographic display

본 발명은 노출광의 미리 설정된 파장(λ)에 감응하는 적어도 하나의 광감성 층을 포함하는 기록 매체(AZM)에서 노광에 의해 적어도 하나의 체적 격자(VG)의 층상 형성을 위한 방법 및 장치에 관한 것이다. 각각의 체적 격자(VG)는 기록 매체(AZM)에서 간섭성 광의 적어도 2개의 간섭 파면(WF1, WF2)에 의해 형성되고, 상기 파면들은 기록 매체(AZM)에서 미리 설정된 깊이(z)에 미리 설정된 각도(2θ)로 간섭 콘트라스트와 중첩된다. 기록 매체(AZM)에서 체적 격자(VG)의 굴절률- 및/또는 투과율 변조의 깊이(z)와 두께는 광 전파(z) 방향으로 간섭 파면(WF1, WF2)의 공간적 및/또는 시간적 간섭도(Γ)에 의해 조절된다. 또한, 본 발명은 홀로그래픽 디스플레이를 위한 빔 컴바이너 및 효율이 증가한 태양광 모듈에 관한 것이다. The present invention relates to a method and apparatus for layer formation of at least one volume grating (VG) by exposure in a recording medium (AZM) comprising at least one light-sensitive layer responsive to a predetermined wavelength will be. Each of the volume gratings VG is formed by at least two interference wavefronts WF1 and WF2 of coherent light in the recording medium AZM and the wavefronts are preset in the recording medium AZM at a predetermined depth z Is superimposed on the interference contrast at an angle (2 [theta]). The depth z and the thickness of the refractive index-and / or transmittance modulation of the volume grating VG in the recording medium AZM are determined by the spatial and / or temporal interference of the interference wavefronts WF1 and WF2 in the direction of the light propagation z Γ). The present invention also relates to a beam combiner for a holographic display and a solar module with increased efficiency.

선형적으로 평행하게 배열된 전극들에 기초한 가변 회절 소자를 포함한, ２차원 및/또는 ３차원 이미지 내용을 표시하기 위한 디스플레이용 광 변조 장치

본 발명은 2차원 및/또는 3차원 이미지 내용 또는 이미지 시퀀스를 표시하기 위한 디스플레이용 광 변조 장치(10)에 관한 것이다. 광 변조 장치(10)는 광 변조기(12) 및 제어 장치(14)를 포함한다. 실질적으로 콜리메이트된 광 파동 장(16)의 위상 및/또는 진폭은 광 변조기(12)에 의해 광 변조기(12)의 위치에 따라 변화될 수 있다. 광 변조기(12)는 제어 장치(14)에 의해 제어될 수 있다. 본 발명에 따라 광 파동 장(16)의 전파 방향으로 볼 때 광 변조기(12) 후방에 하나 이상의 회절 장치(20, 38)가 배치된다. 회절 장치(20, 38)는 가변 회절 구조(22)를 갖는다. 광 변조기(12)에 의해 변화된 광 파동 장(16)이 상기 회절 구조(22)에 의해 가변적이고 미리 정해질 수 있는 방식으로 회절될 수 있다. 본 발명은 또한 디스플레이, 및 광 변조 장치의 제조 방법에 관한 것이다.

Lighting unit for a holographic reconstruction system

An apparatus for the reconstruction of computer-generated video holograms has the object of reconstructing bandwidth-limited holograms (5) with high luminance and image quality in a display having low installation depth, low weight, and reduced effort during production. The apparatus has a focal center field (2) having diffractive optical elements (DOE 1...3), which conduct coherent light after modulation by a light modulator matrix (SLM), which is coded using a video hologram, to an eye position (4), wherein said light reconstructs a three-dimensional scene in the space spanned by the viewing window and said light modulator 10 (SLM).

System and method for replicating volume holograms

The present invention offers increased efficiency and quality in the duplication of a master hologram utilizing an improved method of contact printing. This improved method of contact printing employs a polymer-dispersed liquid crystal (PDLC) recording medium as the duplication blank and/or the master hologram material. The optical qualities of the PDLC material described herein provide an improved method of duplication using single beam contact printing regardless of the material comprising the master hologram. Thus, master holograms originally recorded using highly complex optical geometries (e.g., computer generated holograms) are capable of duplication without the need for multiple beam power/intensity balancing and long recording times. The improved hologram contact printing method described herein works with virtually any type of master hologram, including both reflection and transmission holograms.

Compact holographic display device

A holographic display device comprises a first OLED array writing onto a first OASLM, the first OLED array and the first OASLM forming adjacent layers, and a second OLED array writing onto a second OASLM, the second OLED array and the second OASLM forming adjacent layers. The first and the second OASLMs encode a hologram and a holographic reconstruction is generated by the device when an array of read beams illuminates the first and second OASLMs and the first and second OASLMs are suitably controlled by the first and second OLED arrays. Advantages include that this device permits independent control of phase and amplitude, and the device lends itself to compactness.

INSPECTION SECURITY ELEMENT

Optische holographische Vorrichtung

Holografische Folie und Verfahren zur Herstellung derselben sowie Beleuchtungseinrichung und Hinterleuchtungseinrichtung

Holografische Folie (100), deren Transmissions- und/oder Reflexionseigenschaften entlang zumindest einer ihrer Haupterstreckungsrichtungen periodisch variieren und die dazu ausgebildet ist, von einer Vielzahl periodisch angeordneter Leuchtmittel (200) abgestrahltes und auf die holografische Folie (100) auftreffendes Licht (20, 26) aus mindestens einem ersten Wellenlängenbereich zumindest teilweise zu transmittieren (22, 28), wobei- die holografische Folie (100) eine erste Vielzahl periodisch angeordneter Bereiche umfasst, welche als Reflexionshologramme (12) ausgebildet sind, und- die holografische Folie (100) eine zweite Vielzahl periodisch angeordneter Bereiche umfasst, welche als Transmissionshologramme (14) ausgebildet sind, und wobei die Transmissionshologramme (14) jeweils ringförmig um eines der Reflexionshologramme (12) herum angeordnet sind.

HOLOGRAPHIC DEVICE

An optical element comprises at least one specially prepared substrate containing at least one holographic device applied or incorporated in the substrate thus producing a holographic interference pattern capable of producing an image and means whereby the application of light rays or heat falling on the device initiate or confirm a change in the substrate or the holographic device or both so as to alter the holographic image. The element can be incorporated into a bottle closure or other such container to provide tamper indication. A second holographic device may act as a magnifying optical element for a first hologram. ...

Compact three dimensional image display device

HOLOGRAM KINETOSCOPE; UNIFORM MECHANISM FOR THE DIRECT VIEW OF HOLOGRAMMEN; TO THE PRODUCTION OF HOLOGRAMMEN APPLIED ARTICLE.

OPTICAL HOLOGRAPHIC DEVICES

SECURE DOCUMENT, SYSTEM FOR MAKING SAME AND SYSTEM FOR READING SAID DOCUMENT

HOLOGRAMS

LIGHT MODULATOR DEVICE USED FOR A DISPLAY FOR THE PRESENTATION OF TWO- AND/OR THREE-DIMENSIONAL IMAGE CONTENTS

The invention relates to a light modulation device (10) for a display for representing two- and/or three-dimensional image content or image sequences. The light modulation device (10) comprises a light modulator (12) and a controller (14). The phase and/or the amplitude of a light wave field (16), which is substantially collimated, can be varied by means of the light modulator (12) depending on the location of the light modulator (12). The light modulator (12) can be actuated by means of the control device (14). According to the invention, in the direction of propagation of the light wave field (16), at least one diffracting unit (20, 38) is arranged downstream of the light modulator (12). The diffracting unit (20, 38) has a variable diffracting structure (22). By means of the diffracting structure (22), the light wave field (16) varied by the light modulator (12) can be diffracted in a variable and predeterminable manner. Further, the present invention relates to a display and a method for producing a light modulation device.

PREPOLYMER-BASED POLYURETHANE FORMULATIONS FOR PRODUCING HOLOGRAPHIC MEDIA

Illumination unit for a holographic reconstruction system

HOLOGRAPHIC FILM AND METHOD FOR PRODUCING IT

Described is a holographic film (100) whose transmission and/or reflection properties vary periodically along at least one of its directions of principal extent, said film being designed for at least partial transmission (22, 28) of light (20, 26) of at least one first wavelength range that is irradiated from a multiplicity of periodically disposed illuminants (200) and that impinges on the holographic film (100). Also described are a lighting means (300), a backlighting means and a method for producing a holographic film (100).

DIFFRACTIVE DEVICE WITH ENHANCED ANTI-COPYING PROTECTION

When a diffractive device (2) is illuminated by a light source, it generates one or more diffraction images which are observable from particular ranges of viewing angles around the device. The device comprises a substrate (6), a diffractive structure (3) embossed into or adhered onto the substrate, a first substantially transparent layer (7) over the diffractive structure, light splitting means (8, 10, 11) over the first substantially transparent layer, and a second substantially transparent layer (9) over the light splitting means. The light splitting means protects the diffractive device against replication using near field or far field imaging procedures which require coherent light illumination.

APPARATUS AND METHOD FOR DISPLAYING TRANSMISSION AND REFLECTION HOLOGRAMS

There is herein described apparatus and methods for displaying holograms. At least one aspect of the invention is to provide a compact and self-contained lighting system for a display hologram, which can produce high quality images and which is substantially insensitive to stray light.

２次元及び３次元の少なくともいずれかの画像コンテンツ提示用ディスプレイに用いられる光変調デバイス

A HOLOGRAM VIEWING APPARATUS, AN INTEGRAL DIRECT VIEWING HOLOGRAM DEVICE AND AN ARTICLE USEFUL IN THE MANUFACTURE OF HOLOGRAM DEVICES

Compact three dimensional image display device

MADE SAFE DOCUMENT, SYSTEM OF MANUFACTURE AND SYSTEM OF READING OF THIS DOCUMENT

The invention concerns a document comprising at least a drawing or an information produced, for example, by printing. Said document further comprises a hologram representing part of the document. The hologram of the document is recorded by a system comprising a pre-recorded or electrically controllable optical modulator (23) wherein is recorded the image of part at least of the document. Said modulator is designed to be associated with a photosensitive material film (21). A first reference wave (R) illuminates the photosensitive material film. A second incident wave (I) on said modulator (23) and producing a third object wave (O) is also transmitted with the photosensitive material film to interfere in said film with the reference wave (R).

Plastic films comprising a two curable adhesive layer for the UV- protection of holograms in photopolymer film composites

METHOD AND DEVICE FOR THE LAYERED PRODUCTION OF THIN VOLUME GRID STACKS, AND BEAM COMBINER FOR A HOLOGRAPHIC DISPLAY

The invention relates to a method and to a device for the layered production of at least one volume grid (VG) in a recording medium (AZM) by exposure to light, which comprises at least one light sensitive layer which is sensitized for a predeterminable wavelength (λ) of the exposure light. Each volume grid (VG) is generated in the recording medium (AZM) by at least two interference capable wave fronts (WF1, WF2) of coherent light, which are superimposed at a predeterminable depth (z) at a predeterminable angle (2θ) in the recording medium (AZM) with a predeterminable interference contrast V(z). The depth (z) and the thickness of the refractive index and/or transparency modulation of a volume grid (VG) in the recording medium (AZM) are adjusted in the direction of light propagation (z) by a depth dependent control of the spatial and/or temporal coherence degree (Г) of the interfering wave fronts (WF1, WF2). The invention further relates to a beam combiner for a holographic display and to ...

HOLOGRAPHIC DISPLAY AND HOLOGRAPHIC IMAGE FORMING METHOD

A holographic display and a method, performed by the holographic display, of forming a holographic image are disclosed. The holographic display includes an electrically addressable spatial light modulator (EASLM); a diffractive optical element (DOE) mask array arranged on the EASLM; and a controller configured to operate the holographic display to form a hologram image, wherein the controller is further configured to address the EASLM to backlight the DOE mask array required to form a set of hologram image voxels by turning on a corresponding EASLM pixel.

EXPOSURE APPARATUS AND METHODS

Durchsichtssicherheitselement

Die Erfindung betrifft ein Durchsichtssicherheitselement (20) für Sicherheitspapiere, Wertdokumente und dergleichen, das zumindest ein erstes (24) und ein zweites Sicherheitsmerkmal (34) aufweist, die auf gegenüberliegenden Seiten des Sicherheitselements (20) angeordnet sind, wobei erfindungsgemäß vorgesehen ist, dass - das erste Sicherheitsmerkmal (24) ein in Reflexion erkennbares Sicherheitsmerkmal mit einem elektromagnetische Strahlung beeinflussenden Gittermuster (28) aus einer Vielzahl von Strichgitterlinien ist und - das zweite Sicherheitsmerkmal (34) ein in Transmission strahlformendes optisches Element ist.

Compact three dimensional image display device

Holograms

Inspection security element

The invention relates to an inspection security element (20) for security papers, value documents, and the like, comprising at least a first security characteristic (24) and a second security characteristic (34) located on opposite sides of the security element (20), wherein, according to the invention, the first security characteristic (24) is a security characteristic recognizable in reflection having a grid pattern (28) that can influence electromagnetic radiation, the pattern comprising a plurality of ruled grating lines, and the second security characteristic (34) is an optical element forming radiation in transmission.

HOLOGRAPHIC FOIL AND METHOD FOR PRODUCING SAME

Described is a holographic film (100) whose transmission and/or reflection properties vary periodically along at least one of its directions of principal extent, said film being designed for at least partial transmission (22, 28) of light (20, 26) of at least one first wavelength range that is irradiated from a multiplicity of periodically disposed illuminants (200) and that impinges on the holographic film (100). Also described are a lighting means (300), a backlighting means and a method for producing a holographic film (100).

Außenleuchteinrichtung für ein Kraftfahrzeug

Die Erfindung betrifft eine Außenleuchteinrichtung (30) für ein Kraftfahrzeug (40) sowie ein Kraftfahrzeug (40) mit einer derartigen Außenleuchteinrichtung (30). Die Außenleuchteinrichtung (30) umfasst eine Designblende (31) sowie zumindest eine Erfassungseinrichtung (10) mit einer Bilderfassungseinrichtung (35) und einem Trägermedium (12). Das Trägermedium (12) ist als Lichtleiter ausgebildet, an dem ein Einkoppelbereich (16) und ein Auskoppelbereich (18) bereitgestellt sind. Das Trägermedium (12) mit dem Einkoppelbereich (16) und dem Auskoppelbereich (18) ist flächig und an eine Oberflächenform (33) der Designblende (31) angepasst ausgebildet. Der Einkoppelbereich (16) und der Auskoppelbereich (18) sind jeweils als holografisches Element (14) ausgebildet. Licht (100), das aus einer Umgebung auf die Außenleuchteinrichtung (30) fällt, wird über den Einkoppelbereich (16) in das Trägermediums (12) eingekoppelt, mittels interner Reflektion zu dem Auskoppelbereich (18) transportiert und dort ...

Hologram viewing device

Compact three dimensional image display device

REACTIVE HOLOGRAPHIC DEVICES

Pseudo-collimated illumination derived from and array of light sources

VIEWING OF HOLOGRAMS

HOLOGRAMS

This invention is predicated upon a particular set of components which may be grouped according to a number of permutations each of which has a specific application. A hologram viewing apparatus, an integral direct viewing hologram device and an article useful in the manufacture of hologram devices are provided by this invention. The hologram viewing apparatus comprises a housing enclosing a light source which illuminates a screen located in or on a wall of the housing, the screen consisting of at least a plane grating. The integral direct viewing hologram device comprises a venetian blind film having a hologram embossed on or bonded onto one surface and a plain grating embossed or bonded onto the other surface. The device can be direct viewed in white light and a multi-coloured image can be produced by the provision of a plurality of holograms which are made using different coloured light. The article useful in the manufacture of hologram devices comprises a venetian blind film embossed ...

HYBRID DISPLAY APPARATUS HAVING OPTICAL FUNCTIONAL PATTERN STRUCTURE

Holographic optical devices

The invention provides a holographic optical device, including a light-transmissive substrate; a first holographic optical element carried by the substrate; at least one second holographic optical element carried by the substrate laterally of the first holographic optical element, and at least one third holographic optical element carried by the substrate laterally displaced from the first and second holographic optical elements; wherein the center of at least one of the first, second or third holographic optical elements is located outside a single, straight line.

Compact three dimensional image display device

Skew mirrors, methods of use, and methods of manufacture

An optical reflective device referred to as a skew mirror, having a reflective axis that need not be constrained to surface normal, is described. Examples of skew mirrors are configured to reflect light about substantially constant reflective axes across a relatively wide range of wavelengths. In some examples, a skew mirror has substantially constant reflective axes across a relatively wide range of angles of incidence. Exemplary methods for making and using skew mirrors are also disclosed. Skew mirrors include a grating structure, which in some examples comprises a hologram.

LIGHT MODULATOR DEVICE USED FOR A DISPLAY FOR THE PRESENTATION OF TWO- AND/OR THREE-DIMENSIONAL IMAGE CONTENTS

HOLOGRAPHIC OPTICAL DEVICES

The invention provides a holographic optical device, including a light-transmissive substrate (6); a first holographic optical element (H1) carried by the substrate; at least one second holographic optical element (H2) carried by the substrate laterally of the first holographic optical element, and at least one third holographic optical element (H3) carried by the substrate laterally displaced from the first and second holographic optical elements; wherein the center of at least one of the first, second or third holographic optical elements is located outside a single, straight line.

PREPOLYMER-BASED POLYURETHANE FORMULATIONS FOR PRODUCING HOLOGRAPHIC MEDIA

The present invention relates to novel polyurethane compositions advantageously suited for producing holographic media for, among others, data storage, but also for a variety of optical applications.

METHOD OF FORMING AN IMAGE AND IMAGE PROJECTION DEVICE

INSPECTION SECURITY ELEMENT

The invention relates to an inspection security element (20) for security papers, value documents, and the like, comprising at least a first security characteristic (24) and a second security characteristic (34) located on opposite sides of the security element (20), wherein, according to the invention, the first security characteristic (24) is a security characteristic recognizable in reflection having a grid pattern (28) that can influence electromagnetic radiation, the pattern comprising a plurality of ruled grating lines, and the second security characteristic (34) is an optical element forming radiation in transmission.

Multiemulsion transparency providing separate phase and amplitude control

Method and apparatus for making a hologram that controls both the amplitude and the phase of a reconstructing beam of light at each point on the surface of the hologram. The hologram is a transparency made from a conventional, color reversal photographic film that has multiple emulsion layers that are each selectively photosensitive to light of different wavelengths. The desired image to be produced from the hologram is initially processed into a matrix of Fourier transformed amplitude coefficients and a matrix of Fourier transformed phase coefficients. The hologram is made by first exposing the photographic film to an illumination pattern of the Fourier amplitude coefficients using light having a spectrum to which one of the emulsions is selectively photosensitive. The film is next exposed to an illumination pattern of the Fourier phase coefficients using light having a wavelength to which another emulsion of the film is selectively photosensitive. Two separate exposures are made on the ...

Exposure apparatus and methods

A light beam collimated by illumination optics (4) from a radiation source (6) illuminates the surface of a wave front modulator (8) such as an Spatial Light Modulator (SLM) or Computer Generated Hologram photomask (CGH). The resulting wave travels via projection optics (10) to the substrate (12), passing through a projection lens assembly (14). The SLM (8) is programmed or CGH configured with a modulation pattern that is determined by the substrate (12) topography and desired pattern. The substrate topography is provided by Digital Holography (DH) surface profilometery performed by a DH microscope (18), which provides geometrical or topographical input to the CGH calculation routines (16). An arrangement for vertical or sloping surface patterning has a grating (22) superimposed onto the CGH pattern (24) to generate +1 and 1 orders. The SLM or CGH may be configured: using Fresnel patterns to provide an extended depth of field of the projected wave front; by encoding line segments of the ...

Light modulation device for a display for representing two- and/or three-dimensional image content

The invention relates to a light modulation device for a display for representing two- and/or three-dimensional image content or image sequences. The light modulation device comprises a light modulator and a controller. The phase and/or the amplitude of a light wave field, which is substantially collimated, can be varied by means of the light modulator depending on the location of the light modulator. The light modulator can be actuated by means of the control device. According to the invention, in the direction of propagation of the light wave field, at least one diffracting unit is arranged downstream of the light modulator. The diffracting unit has a variable diffracting structure. By means of the diffracting structure, the light wave field varied by the light modulator can be diffracted in a variable and predeterminable manner. Further, the present invention relates to a display and a method for producing a light modulation device.

MOBILE TELEPHONY SYSTEM COMPRISING HOLOGRAPHIC DISPLAY

Blocking zero-order light in phase shift hologram generation

A method of forming an image comprising providing a device 20 for imparting respective phase-shifts to different regions of an incident wavefront. The phase shifts give rise to an image in a replay field, 170 and causing zero-order light to be focused into a region between the replay field 170 and the device. Light from laser 12 is focused by lens 130 upon a reflecting device, such as a mirror 140. Reflected light is directed via lens 160 to spatial light modulator (SLM) 20. Image information is therefore provided light at an imaging plane 170, whilst zero-order light is returned to the reflecting device to reduce unwanted noise in the replay field.

Holographic windows

Diffractive device with enhanced anti-copying protection

DIFFRACTION OPTICS DIFFUSING SCREEN LAMINATE FOR FULL COLOR ON-AXIS VIEWING

DIFFRACTION OPTICS DIFFUSING SCREEN LAMINATE FOR FULL COLOR ON-AXIS VIEWING ABSTRACT OF THE DISCLOSURE An optical screen module for full-color, on-axis viewing is described. The module has a transmission holographic optical element, a louver filter, and a diffraction optics diffusion screen. Input light is diffracted off-axis by the transmission holographic element, passed through the louver filter and rediffracted on-axis by the diffusion screen The module can handle full-color light because the dispersion in the transmis-sion hologram is compensated by that in the diffusion screen. The louver filter blocks the undiffracted zero-order light while allowing the light diffracted by the transmission hologram to pass through.

LIGHT MODULATOR DEVICE USED FOR A DISPLAY FOR THE PRESENTATION OF TWO- AND/OR THREE-DIMENSIONAL IMAGE CONTENTS

The invention relates to a light modulation device (10) for a display for representing two- and/or three-dimensional image content or image sequences. The light modulation device (10) comprises a light modulator (12) and a controller (14). The phase and/or the amplitude of a light wave field (16), which is substantially collimated, can be varied by means of the light modulator (12) depending on the location of the light modulator (12). The light modulator (12) can be actuated by means of the control device (14). According to the invention, in the direction of propagation of the light wave field (16), at least one diffracting unit (20, 38) is arranged downstream of the light modulator (12). The diffracting unit (20, 38) has a variable diffracting structure (22). By means of the diffracting structure (22), the light wave field (16) varied by the light modulator (12) can be diffracted in a variable and predeterminable manner. Further, the present invention relates to a display and a method for producing a light modulation device.

System and method for controlling displaying image based user recognition using transparent screen

DYE COMPOUND AND PHOTOPOLYMER COMPOSITION

Unreactive fluoro compound and photopolymer composition comprising the same

The present invention relates to a photopolymerizable composition including: a polymer matrix or a precursor thereof containing a reaction product of an acrylate-based polyol and a compound containing at least one isocyanate group; a photoreactive monomer; and a non-reactive fluoro compound represented by a specific chemical formula and a photoinitiator, a hologram recording medium produced from the composition, an optical element including the hologram recording medium, and a method of recording a hologram using the photopolymerizable composition.

APPARATUS AND METHOD FOR DISPLAYING TRANSMISSION AND REFLECTION HOLOGRAMS

There is herein described apparatus and methods for displaying holograms. At least one aspect of the invention is to provide a compact and self-contained lighting system for a display hologram, which can produce high quality images and which is substantially insensitive to stray light.

Holograms

Optical processing

A modular routing node includes a single input port and a plurality of output ports. The modular routing node is arranged to produce a plurality of different deflections and uses small adjustments to compensate for wavelength differences and alignment tolerances in an optical system. An optical device is arranged to receive a multiplex of many optical signals at different wavelengths, to separate the optical signals into at least two groups, and to process at least one of the groups adaptively.

OPTICAL PROCESSING

A modular routing node includes a single input port and a plurality of output ports. The modular routing node is arranged to produce a plurality of different deflections and uses small adjustments to compensate for wavelength differences and alignment tolerances in an optical system. An optical device is arranged to receive a multiplex of many optical signals at different wavelengths, to separate the optical signals into at least two groups, and to process at least one of the groups adaptively.

METHOD OF FORMING AN IMAGE AND IMAGE PROJECTION DEVICE

Processing method

OPTICAL COMPONENT DISPLAY & HEATING APPARATUS

Inspection security element

SETUPAND METHODS FOR STORING DATA IN AND READING OUT DATA FROM A HOLOGRAPHIC STORAGE ARRANGEMENT.

A setup for storing data in and reading out data from a holographic storage medium comprises a light source (12) for emitting light (14) having a wavelength λ, a modulator (16) for modulating the light emitted by the light source, projection means (18) for forming a signal beam (20) from the modulated light and for focusing the signal beam into the holographic storage medium (26) and a light source (12) for emitting a reference beam (22, 32) into the holographic storage medium, the reference beam having a wavelength λ. The setup comprises a grating (28) and a λ/4-layer (30) arranged such that the incident reference beam (22, 32) is diffracted by the grating, upon which the diffracted beam (34) again travels through the λ/4-layer.

Funktionalisierte Scheibe für ein Fahrzeug

Es wird eine funktionalisierte Scheibe für ein Fahrzeug bereitgestellt,wobei die Scheibe (1) einen transparenten Basiskörper (6) mit einer Vorderseite (7) und einer Rückseite (8) aufweist,wobei der Basiskörper (6) einen teiltransparenten Einkoppelbereich (4) und einen davon in einer ersten Richtung (R1) beabstandeten Auskoppelbereich (5) aufweist,wobei der Einkoppelbereich (4) eine diffraktive Struktur umfasst, die von einem zu detektierenden Objekt kommende und auf die Vorderseite (7) treffende Strahlung nur einen Teil so umlenkt, dass der umgelenkte Teil als eingekoppelte Strahlung im Basiskörper (6) durch Reflexionen bis zum Auskoppelbereich (5) propagiert und auf den Auskoppelbereich (5) trifft,wobei der Auskoppelbereich (5) von der auf ihn treffenden eingekoppelten Strahlung mindestens einen Teil so umlenkt, dass der umgelenkte Teil aus dem Basiskörper (6) über die Vorderseite (7) oder Rückseite (8) austritt, um auf das Detektorsystem (2) zu treffen.

HOLOGRAPHIC DEVICES AND USES THEREOF

Skew mirrors, methods of use, and methods of manufacture

An optical reflective device referred to as a skew mirror, having a reflective axis that need not be constrained to surface normal, is described. Examples of skew mirrors are configured to reflect light about substantially constant reflective axes across a relatively wide range of wavelengths. In some examples, a skew mirror has substantially constant reflective axes across a relatively wide range of angles of incidence. Exemplary methods for making and using skew mirrors are also disclosed. Skew mirrors include a grating structure, which in some examples comprises a hologram.

홀로그래피 매체의 제조를 위한 예비중합체-기재 폴리우레탄 제제

... 본 발명은 특히 데이터 저장뿐 아니라 다양한 광학적 적용을 위한 홀로그래피 매체의 제조에 유리하게 적합한 신규 폴리우레탄 조성물에 관한 것이다.

WAVEGUIDE, WAVEGUIDE MANUFACTURING APPARATUS, WAVEGUIDE MANUFACTURING METHOD, AND VIDEO DISPLAY DEVICE USING THE SAME

Provided is a waveguide having a light diffraction unit that diffracts incident light by a multiplex-recorded hologram, in which, in the light diffraction unit, a plurality of holograms having different angles with respect to an incident surface of the waveguide are formed, and when certain parallel light beams are incident, different wavelengths are diffracted by the plurality of holograms. 1. A waveguide comprising a light diffraction unit that diffracts incident light by a multiplex-recorded hologram ,wherein, in the light diffraction unit, a plurality of holograms having different angles with respect to an incident surface of the waveguide are formed, and when certain parallel light beams are incident, different wavelengths are diffracted by the plurality of holograms.2. The waveguide according to claim 1 , further comprising a transmission-type incident prism.3. The waveguide according to claim 1 , further comprising an internal plane reflection prism.4. The waveguide according to claim 1 , further comprising a transmission-type incident prism and an internal plane reflection prism.5. The waveguide according to claim 1 , wherein the light diffraction unit has a two-layer structure of at least a cover layer and a medium layer claim 1 , and a ratio of wavelength dependency of refractive indexes of the cover layer and the medium layer is not constant.6. A manufacturing apparatus for a waveguide having a light diffraction unit that diffracts incident light by a multiplex-recorded hologram claim 1 , comprising:a light source unit;a light splitting unit;a light reflection unit;a recording prism; anda recording medium interposed between the recording prism,wherein lights split by the light splitting unit intersect again by rotation of the light reflection unit to form an interference fringe plane that is multiplex-recorded in the recording medium, andwherein the recording prism has a rotation mechanism, and a central axis of the rotation mechanism is in the ...

SKEW MIRRORS, METHODS OF USE, AND METHODS OF MANUFACTURE

An optical reflective device referred to as a skew mirror, having a reflective axis that need not be constrained to surface normal, is described. Examples of skew mirrors are configured to reflect light about a constant reflective axis across a relatively wide range of wavelengths. In some examples, a skew mirror has a constant reflective axis across a relatively wide range of angles of incidence. Exemplary methods for making and using skew mirrors are also disclosed. Skew mirrors include a grating structure, which in some examples comprises a hologram. 1. A skew mirror comprising: the grating structure is configured to reflect first incident light, the first incident light being incident upon the grating medium at a specific site and having a first wavelength and a first internal angle of incidence relative to grating medium surface normal;', 'the first incident light is principally reflected by the grating medium as first reflected light, the first reflected light having the first wavelength and a first internal angle of reflection relative to the surface normal;', 'the first incident light and the first reflected light are bisected by a first reflective axis having a first reflective axis angle relative to the surface normal;', 'the grating structure is further configured to reflect second incident light, the second incident light being incident on the grating medium at the specific site and having a second wavelength and a second internal angle of incidence relative to the surface normal;', 'the second incident light is principally reflected by the grating medium as second reflected light, the second reflected light having the second wavelength and a second internal angle of reflection relative to the surface normal;', 'the second incident light and the second reflected light are bisected by a second reflective axis having a second reflective axis angle relative to the surface normal;', 'the first internal angle of incidence is the same as the second internal ...

Skew mirrors, methods of use, and methods of manufacture

An optical reflective device referred to as a skew mirror, having a reflective axis that need not be constrained to surface normal, is described. Examples of skew mirrors are configured to reflect light about a constant reflective axis across a relatively wide range of wavelengths. In some examples, a skew mirror has a constant reflective axis across a relatively wide range of angles of incidence. Exemplary methods for making and using skew mirrors are also disclosed. Skew mirrors include a grating structure, which in some examples comprises a hologram.

Digital infrared holograms

Embodiments are directed to an apparatus for creating a scene comprising: a plurality of micro-mirrors configured to rotate between an off position and at least two on positions to generate a plurality of holograms, and a processor configured to select positions for the micro-mirrors based on an input specification of the scene.

REDUCED BANDWIDTH HOLOGRAPHIC NEAR-EYE DISPLAY

Examples are disclosed that relate to holographic near-eye display systems. One example provides a near-eye display device, comprising a diverging light source, an image producing dynamic digital hologram panel configured to receive light from the diverging light source and form an image. The near-eye display device also includes and a combiner comprising a holographic optical element positioned to receive light from the dynamic digital hologram panel and to redirect the light toward an eyebox, the holographic optical element being positioned between the eyebox and a view of an external environment to combine a view of the image formed by the dynamic digital hologram panel and the view of the external environment. 1. A near-eye display device , comprising:a diverging light source (DLS);an image-producing Dynamic Digital Hologram (DDH) panel configured to receive light from the DLS and form an image; anda combiner that uses digitally generated diffractive optics positioned to receive light from the image-producing DDH panel and to redirect the light toward an eyebox, the combiner being positioned between the eyebox and a view of an external environment to combine a view of the image formed by the DDH panel and the view of the external environment.2. The near-eye display device of claim 1 , wherein the digitally generated diffractive optics comprises an optical copy of a digitally generated diffractive optic.3. The near-eye display device of claim 1 , wherein the digitally generated diffractive optics comprise a plurality of Bragg holograms.4. The near-eye display device of claim 3 , wherein the plurality of Bragg holograms are configured to preferentially reflect wavelengths of light corresponding to wavelengths of light diffracted by a Computer Generated Hologram (CGH).5. The near-eye display device of claim 4 , wherein the plurality of Bragg holograms are located in physically separate layers.6. The near-eye display device of claim 4 , wherein the plurality of ...

Holographic windows

We describe a window assembly comprising: a window pane comprising a glass or plastic sheet; and a layer of holographic recording medium attached to said glass or plastic sheet; wherein said layer of holographic recording medium has recorded within the medium a volume hologram configured to direct light incident onto said glass or plastic sheet to propagate within a thickness of said glass or plastic sheet. In embodiments the volume hologram is fabricated by recording a transmission hologram and shrinking the recorded hologram to convert the transmission hologram to an edge-directing hologram configured to direct light in a direction to be totally internally reflected within the window pane, for example at greater than 40°, 50°, 60°, 70°, 75° or 80° to a normal to the surface of the hologram.

OPTICAL DEVICE AND METHOD OF OUTPUTTING LIGHT BY USING THE SAME

Provided are an optical device and a method of outputting light using the optical device. The optical device includes a waveguide, a first diffraction grating receiving at least a portion of light incident on the waveguide and a second diffraction grating receiving a light diffracted from the first diffraction grating, wherein the first diffraction grating and the second diffraction grating are provided in or on the waveguide, the light diffracted from the first diffraction grating is diffracted, in three-dimensional directions, from the second diffraction grating, and at least a portion of the light diffracted in the three-dimensional directions is output to an outside of the waveguide. 1. An optical device comprising:a waveguide;a first diffraction grating receiving at least a portion of light incident on the waveguide; anda second diffraction grating receiving a light diffracted from the first diffraction grating,wherein the first diffraction grating and the second diffraction grating are provided in or on the waveguide,the light diffracted from the first diffraction grating is diffracted, in three-dimensional directions, from the second diffraction grating, andat least a portion of the light diffracted in the three-dimensional directions is output to an outside of the waveguide.2. The optical device of claim 1 , wherein the second diffraction grating includes gratings of a pattern based on directions of grating vectors corresponding to sides of a polyhedron inscribed in a sphere claim 1 , andwherein the light diffracted from the first diffraction grating to the second diffraction grating is diffracted in the three-dimensional directions based on a sum of a one dimensional direction of the light diffracted from the first diffraction grating to the second diffraction grating and the directions of the grating vectors.3. The optical device of claim 1 , wherein the second diffraction grating includes gratings of a pattern recorded based on (n+1) beams of light ...

Optical Processing

A modular routing node includes a single input port and a plurality of output ports. The modular routing node is arranged to produce a plurality of different deflections and uses small adjustments to compensate for wavelength differences and alignment tolerances in an optical system. An optical device is arranged to receive a multiplex of many optical signals at different wavelengths, to separate the optical signals into at least two groups, and to process at least one of the groups adaptively.

Skew mirrors, methods of use, and methods of manufacture

An optical reflective device referred to as a skew mirror, having a reflective axis that need not be constrained to surface normal, is described. Examples of skew mirrors are configured to reflect light about substantially constant reflective axes across a relatively wide range of wavelengths. In some examples, a skew mirror has substantially constant reflective axes across a relatively wide range of angles of incidence. Exemplary methods for making and using skew mirrors are also disclosed. Skew mirrors include a grating structure, which in some examples comprises a hologram.

Light modulator device used for a display for the presentation of two- and/or three-dimensional image contents

The invention relates to a light modulation device for a display for representing two- and/or three-dimensional image content or image sequences. The light modulation device comprises a light modulator and a controller. The phase and/or the amplitude of a light wave field, which is substantially collimated, can be varied by means of the light modulator depending on the location of the light modulator. The light modulator can be actuated by means of the control device. According to the invention, in the direction of propagation of the light wave field, at least one diffracting unit is arranged downstream of the light modulator. The diffracting unit has a variable diffracting structure. By means of the diffracting structure, the light wave field varied by the light modulator can be diffracted in a variable and predeterminable manner. Further, the present invention relates to a display and a method for producing a light modulation device.

Optical Processing

A modular routing node includes a single input port and a plurality of output ports. The modular routing node is arranged to produce a plurality of different deflections and uses small adjustments to compensate for wavelength differences and alignment tolerances in an optical system. An optical device is arranged to receive a multiplex of many optical signals at different wavelengths, to separate the optical signals into at least two groups, and to process at least one of the groups adaptively. 1. An optical routing module having at least two inputs and at least one output and operable to select between the inputs , the module comprising:a reflective Spatial Light Modulator (SLM) having a two-dimensional array of controllable elements, a dispersion device, an optical device, and circuitry constructed and arranged to control the controllable elements of the SLM to determine what is output, wherein:the dispersion device is disposed to receive light from said at least two inputs and is constructed and arranged to angularly disperse light beams of different centre wavelengths;the optical device is disposed to receive the angularly dispersed light beams from the dispersion device, to direct the light beams to respective different two-dimensional groups of controllable elements of the SLM and to spatially distribute the light beams from the dispersion device by wavelength as input light beams both across the SLM and within each of the two-dimensional groups, thereby to form light beams having spatially separated centre wavelengths at the SLM;the SLM is disposed to receive one or more input light beams having spatially separated centre wavelengths from the optical device and to form one or more emergent reflected output light beams, and is operable to steer the one or more emergent reflected output light beams away from the input light beams; andthe optical device and dispersion element are further disposed such that all wavelengths selected for routing to an output are ...

DIGITAL INFRARED HOLOGRAMS

Embodiments are directed to an apparatus for creating a scene comprising: a plurality of micro-mirrors configured to rotate between an off position and at least two on positions to generate a plurality of holograms, and a processor configured to select positions for the micro-mirrors based on an input specification of the scene. 1. A method comprising:receiving an input specification of a scene;selecting a position for a plurality of micro-mirrors based on the input specification to generate a plurality of holograms,wherein the micro-mirrors are configured to rotate between an off position and at least two on positions,wherein the input specification requests holograms to be generated for use as a beam-shaper for a laser, and wherein the holograms implement beam-shaping for the laser.2. The method of claim 1 , wherein each of the micro-mirrors comprises a lip proximate to an apex of the micro-mirror.3. The method of claim 1 , wherein the at least two on positions correspond to rotation of a given micro-mirror at angles relative to the off position.4. The method of claim 3 , wherein the angles correspond to discrete angles.5. The method of claim 3 , wherein the angles correspond to angles selected from a continuous range of angles.6. The method of claim 1 , further comprising:sequencing the holograms; andapplying a light source to each of the sequenced holograms in turn.7. The method of claim 6 , wherein the holograms are sequenced at a rate that is selected so that a person perceiving the scene may interpret output images generated by transitions between the holograms to be smooth.8. The method of claim 1 , wherein the input specification requests a generation of decoy versions of an actual object present in the scene claim 1 , and wherein the holograms correspond to the decoy versions.9. An apparatus for creating a scene claim 1 , comprising:a plurality of micro-mirrors configured to rotate between an off position and at least two on positions to generate a ...

Spatial deposition of resins with different functionality on different substrates

Techniques disclosed herein relate to optical devices. Resins with different optical properties can be deposited in different areas to provide increased optical functionality. It can be difficult to design a single photopolymer material that meets several technical requirements. Different resins can be deposited on the same substrate to make a single film with spatially varying properties. Different resins can also be applied to different substrates in a stack. By using different resins, an optical component can be made that meets several technical requirements.

Spatial deposition of resins with different functionality

Techniques disclosed herein relate to optical devices. Resins with different optical properties can be deposited in different areas to provide increased optical functionality. It can be difficult to design a single photopolymer material that meets several technical requirements. Different resins can be deposited on the same substrate to make a single film with spatially varying properties. Different resins can also be applied to different substrates in a stack. By using different resins, an optical component can be made that meets several technical requirements.

LIGHT MODULATOR DEVICE FOR A DISPLAY FOR REPRESENTING TWO- AND/OR THREE-DIMENSIONAL IMAGE CONTENT

The invention relates to a light modulation device for a display for representing two- and/or three-dimensional image content or image sequences. The light modulation device comprises a light modulator and a controller. The phase and/or the amplitude of a light wave field, which is substantially collimated, can be varied by means of the light modulator depending on the location of the light modulator. The light modulator can be actuated by means of the control device. According to the invention, in the direction of propagation of the light wave field, at least one diffracting unit is arranged downstream of the light modulator. The diffracting unit has a variable diffracting structure. By means of the diffracting structure, the light wave field varied by the light modulator can be diffracted in a variable and predeterminable manner. Further, the present invention relates to a display and a method for producing a light modulation device. 1. A device for displaying a hologram image comprising:a light modulator device configured to display the hologram image,an illumination device disposed at one side of the light modulator device for providing light,a first diffraction device disposed at one side of the light modulator device for providing a diffractive structure along a direction rotated by a presettable angle to the horizontal line,a second diffraction device disposed at one side of the first diffraction device facing away from the spatial light modulator device for providing a diffractive structure along a direction rotated by a presettable angle to the horizontal line.2. The device according to claim 1 , wherein the directions of the diffractive structures of the first diffraction device and the second diffraction device are oriented at right angles to each other.3. The device according to claim 1 , wherein wherein the first diffraction device deflects light from the light modulator device in a direction perpendicular to the direction of its diffractive structure ...

Method and apparatus for recording and displaying edge-illuminated holograms

Methods and apparatus for recording and displaying edge-illuminated holograms. Disclosed is a method for producing holograms whereby the reference beam, when recording, and the illumination beam, when displaying the hologram, impinge on the edge of the cover plate placed over the hologram. Edge-illumination of holograms makes possible holographic displays which fit in a volume having very little depth.

Display hologram

A display hologram structure including a display hologram configured for reconstruction with a playback beam having a predetermined wavefront configuration, and a light configuring hologram that provides playback illumination for the display hologram pursuant to diffraction of an off-axis playback beam that does not have the predetermined wavefront configuration, and wherein the playback illumination provided by the light configuring hologram has the predetermined wavefront configuration.

System and method for replicating volume holograms

The present invention offers increased efficiency and quality in the duplication of a master hologram utilizing an improved method of contact printing. This improved method of contact printing employs a polymer-dispersed liquid crystal (PDLC) recording medium as the duplication blank and/or the master hologram material. The optical qualities of the PDLC material described herein provide an improved method of duplication using single beam contact printing regardless of the material comprising the master hologram. Thus, master holograms originally recorded using highly complex optical geometries (e.g., computer generated holograms) are capable of duplication without the need for multiple beam power/intensity balancing and long recording times. The improved hologram contact printing method described herein works with virtually any type of master hologram, including both reflection and transmission holograms.

Agile holographic optical phased array device and applications

A device that provides light beam switching, agile steering of the light beam over a range of angles, and generation of arbitrary wavefront shapes with high spatial and temporal resolution. The agile device can include a volume diffractive structure comprising Bragg planes having one refractive index and the Bragg planes separated by regions containing an active optical medium. Electrodes (which may be the Bragg planes themselves, or may be arrayed adjacent to the active optical medium) are used to control the electric field intensity and direction across the structure, and thereby control the diffraction efficiency of the structure and the local phase delay imposed on a diffracted wavefront. Means are provided for addressing the many thousands of electrodes required for precise and rapid wavefront control. Applications include free-space atmospheric optical communications, near-eye displays, direct-view 3D displays, optical switching, and a host of other applications.

Compact holographic edge illuminated wearable display

There is provided a wearable display comprising a light source emitting light of a first wavelength; a first SBG device having a front side and a rear side; first and second transparent plates sandwiching said SBG device; independently switchable transparent electrode elements applied to the opposing surfaces of said transparent plates, a means for spatio-temporally modulating light from the light source to provide image light and a means for coupling the image light into the light guide formed by the two transparent plates and the SBG device. The SBG device comprises a multiplicity of selectively switchable grating regions. The SBG device diffracts image into the pupil of an eye.

Skew mirrors, methods of use, and methods of manufacture

An optical reflective device referred to as a skew mirror, having a reflective axis that need not be constrained to surface normal, is described. Examples of skew mirrors are configured to reflect light about a constant reflective axis across a relatively wide range of wavelengths. In some examples, a skew mirror has a constant reflective axis across a relatively wide range of angles of incidence. Exemplary methods for making and using skew mirrors are also disclosed. Skew mirrors include a grating structure, which in some examples comprises a hologram.

A system and method for replicating volume holograms

The present invention offers increased efficiency and quality in the duplication of a master hologram using contact printing methods using a single laser beam (33) from a single laser source (31). The improvement uses a polymer dispersed liquid crystal (PDLC) recording medium as the duplication blank (35) and/or the master hologram (37). The optical qualities of the PDLC recording medium allows the recording of highly complex optical patterns, such as computer generated hologram, without the need for multiple beam power/intensity balancing or long recording times. The contact printing method allows the recording of transmission hologram as well as the duplication of reflection holograms as shown in figure 4.

Secured document, system for manufacturing same and system for reading this document

A document includes at least one drawing or data produced, for example, by printing. In addition, this document includes a hologram representing part of the document. The hologram of this document is recorded using a system including a prerecorded or electrically controllable optical modulator in which the image of at least part of the document is recorded. This modulator is designed to be combined with a layer of photosensitive material. A first reference wave illuminates the layer of photosensitive material. A second wave incident on the modulator and giving rise to a third object wave is also transmitted to the layer of photosensitive material in order to interfere with the reference wave in this layer.

Reduced bandwidth holographic near-eye display

Examples are disclosed that relate to holographic near-eye display systems. One example provides a near-eye display device, comprising a diverging light source, an image producing dynamic digital hologram panel configured to receive light from the diverging light source and form an image. The near-eye display device also includes and a combiner comprising a holographic optical element positioned to receive light from the dynamic digital hologram panel and to redirect the light toward an eyebox, the holographic optical element being positioned between the eyebox and a view of an external environment to combine a view of the image formed by the dynamic digital hologram panel and the view of the external environment.

Skew mirrors, methods of use, and methods of manufacture

An optical reflective device referred to as a skew mirror, having a reflective axis that need not be constrained to surface normal, is described. Examples of skew mirrors are configured to reflect light about a constant reflective axis across a relatively wide range of wavelengths. In some examples, a skew mirror has a constant reflective axis across a relatively wide range of angles of incidence. Exemplary methods for making and using skew mirrors are also disclosed. Skew mirrors include a grating structure, which in some examples comprises a hologram.

Reduced bandwidth holographic near-eye display

Examples are disclosed that relate to holographic near-eye display systems. One example provides a near-eye display device, comprising a diverging light source, an image producing dynamic digital hologram panel configured to receive light from the diverging light source and form an image. The near-eye display device also includes and a combiner comprising a holographic optical element positioned to receive light from the dynamic digital hologram panel and to redirect the light toward an eyebox, the holographic optical element being positioned between the eyebox and a view of an external environment to combine a view of the image formed by the dynamic digital hologram panel and the view of the external environment.

A Hologram Display Apparatus and A Method of Producing a Holographic Image Using the Same

여기서는 홀로그램을 디스플레이하기 위한 장치 및 방법이 설명된다. 본 발명의 적어도 하나의 태양은 고품질 이미지를 생성할 수 있고, 실질적으로 미광에 대해 둔감성인 홀로그램을 디스플레이하기 위한 컴팩트하고 자체-포함된 광 시스템을 제공하는 것이다. An apparatus and method for displaying a hologram will now be described. At least one aspect of the present invention is to provide a compact, self-contained optical system for displaying holograms that are capable of producing high quality images and substantially insensitive to stray light.

Display device integrated with fingerprint sensor using holographic optical element

본 발명은 지문 센서 일체형 표시장치에 관한 것으로, 디스플레이 패널 상에 배치된 투명 기판과, 광원으로부터의 빛을 상기 투명 기판으로 조사하는 입광 소자를 구비한다. 상기 입광 소자의 위치에서 홀로그램 소자를 통해 특정 형태의 시각 정보가 재생된다. The present invention relates to a fingerprint sensor integrated display device, comprising: a transparent substrate disposed on a display panel; and a light incident element irradiating light from a light source to the transparent substrate. At the position of the light incident element, a specific type of visual information is reproduced through the hologram element.

Holographic display device comprising magneto-optical spatial light modulator

A holographic display device comprising at least one magneto-optical spatial light modulator (MOSLM). The holographic display device may comprise a first MOSLM and a second MOSLM, the first and second MOSLMs encoding a hologram and a holographic reconstruction being generated by the device. An advantage of the device is fast encoding of holograms.

使用全息光学元件的显示器及其方法

公开了一种使用全息光学元件的显示器及其方法。该指纹传感器集成显示器包括：显示面板，在所述显示面板上显示输入图像；透明基板，所述透明基板被设置在所述显示面板上；以及光入射元件，所述光入射元件被配置为将来自光源的光照射到所述透明基板上。特定类型的视觉信息通过所述光入射元件的位置处的全息元件来再现。

홀로그램 디스플레이 장치 및 이를 이용한 홀로그래픽 이미지를 생성하는 방법

여기서는 홀로그램을 디스플레이하기 위한 장치 및 방법이 설명된다. 본 발명의 적어도 하나의 태양은 고품질 이미지를 생성할 수 있고, 실질적으로 미광에 대해 둔감성인 홀로그램을 디스플레이하기 위한 컴팩트하고 자체-포함된 광 시스템을 제공하는 것이다.

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。

Skew mirror, method of use and method of manufacture

本发明涉及斜交镜、使用方法和制造方法，具体提供了被称为斜交镜的光学反射设备，所述设备具有不需要被限制为表面法线的反射轴。斜交镜的示例被配置为在相对较宽的波长范围内关于基本恒定的反射轴反射光。在一些示例中，斜交镜在相对较宽的入射角范围内具有基本恒定的反射轴。还公开了用于制造和使用斜交镜的示例性方法。斜交镜包括光栅结构，其在一些示例中包括全息图。

Prepolymer-based polyurethane formulations for producing holographic media

본 발명은 특히 데이터 저장뿐 아니라 다양한 광학적 적용을 위한 홀로그래피 매체의 제조에 유리하게 적합한 신규 폴리우레탄 조성물에 관한 것이다. The present invention relates to novel polyurethane compositions which are particularly suited to the storage of data as well as to the production of holographic media for various optical applications.

Inclined mirrors, application method and manufacturing method

本发明提供了被称为斜交镜的光学反射设备，所述设备具有不需要被限制为表面法线的反射轴。斜交镜的示例被配置为在相对较宽的波长范围内关于基本恒定的反射轴反射光。在一些示例中，斜交镜在相对较宽的入射角范围内具有基本恒定的反射轴。还公开了用于制造和使用斜交镜的示例性方法。斜交镜包括光栅结构，其在一些示例中包括全息图。

Compound hologram

Hologramic identification system

A SYSTEM FOR IDENTIFYING GOODS AND THE LIKE CONSISTING IN MAKING AN ORIGINAL REFLECTION HOLOGRAM OF A PLURALITY OF INFORMATION DATA RELATIVE TO SUCH GOODS, DIVIDING THE HOLOGRAM INTO A PLURALITY OF ELEMENTARY CHIPS EACH INCLUDING THE TOTALITY OF THE INFORMATION RECORDED IN THE ORIGINAL HOLOGRAM AND ATTACHING ONE CHIP, BY ADHESIVE OR THE LIKE, TO EACH ARTICLE OF THE GOODS. THE INFORMATION RECORDED IN THE CHIP IS ILLEGIBLE AND CAN BE RECONSTRUCTED ONLY BY MEANS OF AN APPROPRIATE VIEWER DECODER.

Compact holographic display device

A holographic display device (910) comprises a first OLED array (91, 92) writing onto a first OASLM (95-98), the first OLED array and the first OASLM forming adjacent layers, and a second OLED array (906, 907) writing onto a second OASLM (901, 903), the second OLED array and the second OASLM forming adjacent layers. The first and the second OASLMs encode a hologram and a holographic reconstruction is generated by the device when an array of read beams (909) illuminates the first and second OASLMs and the first and second OASLMs are suitably controlled by the first and second OLED arrays. Advantages include that this device permits independent control of phase and amplitude, and the device lends itself to compactness.

Hologram recording film with additional information and recording method thereof

Apparatus and method for displaying transmission and reflection holograms

There is herein described apparatus and methods for displaying holograms. At least one aspect of the invention is to provide a compact and self-contained lighting system for a display hologram, which can produce high quality images and which is substantially insensitive to stray light.

Optical processing

A modular routing node includes a single input port and a plurality of output ports. The modular routing node is arranged to produce a plurality of different deflections and uses small adjustments to compensate for wavelength differences and alignment tolerances in an optical system. An optical device is arranged to receive a multiplex of many optical signals at different wavelengths, to separate the optical signals into at least two groups, and to process at least one of the groups adaptively.

Holographic foil and method of making the same

Es wird eine holografische Folie (100) beschrieben, deren Transmissions- und/oder Reflexionseigenschaften entlang zumindest einer ihrer Haupterstreckungsrichtungen periodisch variieren und die dazu ausgebildet ist, von einer Vielzahl periodisch angeordneter Leuchtmittel (200) abgestrahltes und auf die holografische Folie (100) auftreffendes Licht (20, 26) aus mindestens einem ersten Wellenlängenbereich zumindest teilweise zu transmittieren (22, 28). Es werden außerdem eine Beleuchtungseinrichtung (300), eine Hinterleuchtungseinrichtung sowie ein Verfahren zur Herstellung einer holografischen Folie (100) beschrieben. A holographic film (100) is described whose transmission and / or reflection properties vary periodically along at least one of its main directions of extension and which is designed to emit light emitted by a multiplicity of periodically arranged illuminants (200) and impinging on the holographic film (100) (20, 26) from at least a first wavelength range at least partially to transmit (22, 28). An illumination device (300), a backlighting device and a method for producing a holographic film (100) are also described.

Mobile telephony system comprising holographic display

A mobile telephony system comprising a calling party mobile telephone with an imaging system and a display. The imaging system is operable to capture an image of the calling party. The calling party mobile telephone sends an image of the calling party to a called party mobile telephone over a wireless link, and the called party mobile telephone locally generates a holographic reconstruction of the calling party using a holographic display that is encoded with a hologram. An advantage is that a mobile telephone call may be held in which one party views a holographic reconstruction of the other party.

Optical processing

Hybrid display apparatus having optical functional pattern structure

본 명세서는 광기능성 패턴 구조물, 이를 포함하는 진위 판별 장치 및 이의 제조방법에 관한 것이다. The present specification relates to a photofunctional pattern structure, an authenticity determination apparatus including the same, and a method of manufacturing the same.

Lightwave correction for holographic projection systems

Skew mirror, method of use and method of manufacture

本发明提供了被称为斜交镜的光学反射设备，所述设备具有不需要被限制为表面法线的反射轴。斜交镜的示例被配置为在相对较宽的波长范围内关于基本恒定的反射轴反射光。在一些示例中，斜交镜在相对较宽的入射角范围内具有基本恒定的反射轴。还公开了用于制造和使用斜交镜的示例性方法。斜交镜包括光栅结构，其在一些示例中包括全息图。

Non-reactive fluorine-based compound and a photopolymerizable composition containing the same

Optical wave correction for a holographic projection system

Optical device and method of outputting light by using the same

Provided are an optical device and a method of outputting light using the optical device. The optical device includes a waveguide, a first diffraction grating receiving at least a portion of light incident on the waveguide and a second diffraction grating receiving a light diffracted from the first diffraction grating, wherein the first diffraction grating and the second diffraction grating are provided in or on the waveguide, the light diffracted from the first diffraction grating is diffracted, in three-dimensional directions, from the second diffraction grating, and at least a portion of the light diffracted in the three-dimensional directions is output to an outside of the waveguide.

Compact holographic display device

A holographic display device (910) comprises a first OLED array (91, 92) writing onto a first OASLM (95-98), the first OLED array and the first OASLM forming adjacent layers, and a second OLED array (906, 907) writing onto a second OASLM (901, 903), the second OLED array and the second OASLM forming adjacent layers. The first and the second OASLMs encode a hologram and a holographic reconstruction is generated by the device when an array of read beams (909) illuminates the first and second OASLMs and the first and second OASLMs are suitably controlled by the first and second OLED arrays. Advantages include that this device permits independent control of phase and amplitude, and the device lends itself to compactness.

Optical processing

To operate an optical device comprising an SLM with a two-dimensional array of controllable phase-modulating elements groups of individual phase-modulating elements are delineated, and control data selected from a store for each delineated group of phase-modulating elements. The selected control data are used to generate holograms at each group and one or both of the delineation of the groups and the selection of control data is/are varied. In this way upon illumination of the groups by light beams, light beams emergent from the groups are controllable independently of each other.

Optical processing

A modular routing node includes a single input port and a plurality of output ports. The modular routing node is arranged to produce a plurality of different deflections and uses small adjustments to compensate for wavelength differences and alignment tolerances in an optical system. An optical device is arranged to receive a multiplex of many optical signals at different wavelengths, to separate the optical signals into at least two groups, and to process at least one of the groups adaptively.

Holographic windows

We describe a window assembly (100) comprising: a window pane (102) comprising a glass or plastic sheet; and a layer of holographic recording medium (104) attached to said glass or plastic sheet; wherein said layer of holographic recording medium has recorded within the medium a volume hologram (106) configured to direct light incident onto said glass or plastic sheet to propagate within a thickness of said glass or plastic sheet, preferably to a photovoltaic element (120). In embodiments the volume hologram is fabricated by recording a transmission hologram and shrinking the recorded hologram to convert the transmission hologram to an edge-directing hologram configured to direct light in a direction to be totally internally reflected within the window pane, for example at greater than 40°, 50°, 60°, 70°, 75° or 80° to a normal to the surface of the hologram.

Compact holographic edge illuminated wearable display

There is provided a wearable display comprising a light source emitting light of a first wavelength; a first SBG device having a front side and a rear side; first and second transparent plates sandwiching said SBG device; independently switchable transparent electrode elements applied to the opposing surfaces of said transparent plates, a means for spatio-temporally modulating light from the light source to provide image light and a means for coupling the image light into the light guide formed by the two transparent plates and the SBG device. The SBG device comprises a multiplicity of selectively switchable grating regions. The SBG device diffracts image into the pupil of an eye.

Prepolymer-based polyurethane formulations for producing holographic media

The present invention relates to novel polyurethane compositions advantageously suited for producing holographic media for, among others, data storage, but also for a variety of optical applications.

Holographic display device

一种包含2D光源阵列中的光源(L51、L52……)、2D透镜阵列中的透镜(L1、L2……)、空间光调制器(SLM)和分束器的全息显示装置，在该装置中，每个透镜有m个光源，且该光源是m对一地对应于透镜，分束器将离开SLM的光线分成两束，一束照明用于m只左眼的虚拟观察者窗口(VOWL)，另一束照明用于m只右眼的虚拟观察者窗口(VOWR)。在一个例子中，m＝1。优点是：2D编码具有垂直和水平聚焦以及垂直和水平移动视差。

Compact holographic display device

A holographic display device (15) comprises an OLED array (12) writing onto an OASLM (13), the OLED array and OASLM forming adjacent layers. The OASLM encodes a hologram and a holographic reconstruction is then generated by the device when an array of read beams (10) illuminates the OASLM. The OASLM is suitably controlled by the OLED array. An advantage of the device is that it lends itself to compactness.

Optical processing

To operate an optical device comprising an SLM with a two-dimensional array of controllable phase-modulating elements groups of individual phase-modulating elements are delineated, and control data selected from a store for each delineated group of phase-modulating elements. The selected control data are used to generate holograms at each group and one or both of the delineation of the groups and the selection of control data is/are varied. In this way upon illumination of the groups by light beams, light beams emergent from the groups are controllable independently of each other.

Setupand methods for storing data in and reading out data from a holographic storage arrangement.

A setup for storing data in and reading out data from a holographic storage medium comprises a light source (12) for emitting light (14) having a wavelength λ, a modulator (16) for modulating the light emitted by the light source, projection means (18) for forming a signal beam (20) from the modulated light and for focusing the signal beam into the holographic storage medium (26) and a light source (12) for emitting a reference beam (22, 32) into the holographic storage medium, the reference beam having a wavelength λ. The setup comprises a grating (28) and a λ/4-layer (30) arranged such that the incident reference beam (22, 32) is diffracted by the grating, upon which the diffracted beam (34) again travels through the λ/4-layer.

Apparatus for displaying reflection holograms

Secure document, system for making same and system for reading said document

The invention concerns a document comprising at least a drawing or an information produced, for example, by printing. Said document further comprises a hologram representing part of the document. The hologram of the document is recorded by a system comprising a pre-recorded or electrically controllable optical modulator (23) wherein is recorded the image of part at least of the document. Said modulator is designed to be associated with a photosensitive material film (21). A first reference wave (R) illuminates the photosensitive material film. A second incident wave (I) on said modulator (23) and producing a third object wave (O) is also transmitted with the photosensitive material film to interfere in said film with the reference wave (R).

Hologram viewing device and hologram device

This invention is predicated upon a particular set of components which may be grouped according to a number of permutations each of which has a specific application. <??>A hologram viewing apparatus, an integral direct viewing hologram device and an article useful in the manufacture of hologram devices are provided by this invention. <??>The hologram viewing apparatus comprises a housing (20) enclosing a light source (21) which illuminates a screen located in or on a wall of the housing (20), the screen consisting of at least a plane grating (28). <??>The integral direct viewing hologram device comprises a venetian blind film (10) having a hologram (11) embossed on or bonded onto one surface and a plane grating (28) embossed or bonded onto the other surface. The device can be direct viewed in white light and a multi-coloured image can be produced by the provision of a plurality of holograms (11, 12) which are made using different coloured light. <??>The article useful in the manufacture of hologram devices comprises a venetian blind film embossed on one side with a plane grating.

Viewing of holograms

This invention is predicated upon a particular set of components which may be grouped according to a number of permutations each of which has a specific application. <??>A hologram viewing apparatus, an integral direct viewing hologram device and an article useful in the manufacture of hologram devices are provided by this invention. <??>The hologram viewing apparatus comprises a housing (20) enclosing a light source (21) which illuminates a screen located in or on a wall of the housing (20), the screen consisting of at least a plane grating (28). <??>The integral direct viewing hologram device comprises a venetian blind film (10) having a hologram (11) embossed on or bonded onto one surface and a plane grating (28) embossed or bonded onto the other surface. The device can be direct viewed in white light and a multi-coloured image can be produced by the provision of a plurality of holograms (11, 12) which are made using different coloured light. <??>The article useful in the manufacture of hologram devices comprises a venetian blind film embossed on one side with a plane grating.

Spatial deposition of resins with different diffractive functionality on different substrates

Techniques disclosed herein relate to diffractive optical devices (430,440,1104). It is difficult to design a single photopolymer material that meets several technical requirements (e.g., high dynamic range, low absorption & haze, good resolution, sensitivity across visible spectrum, etc.). To solve this problem, different resins (1110,1120, 1130) with different optical properties are applied to different substrates (1112,1122,1132) in a stack (1104). By using different resins, an optical component can be made that meets extended technical requirements.

Illumination of holograms

本文限定了光学器件(例如光学器件的阵列)，所述光学器件(例如光学器件的阵列)形成光束以产生从虚拟源点发出的准直的或发散的/会聚的光束从而对全息图进行照明。还描述了光束从前面对反射全息图进行照明，以及光束与全息光学元件(HOE)镜结合能够实现对反射全息图的后面照明的另一构造。

Diffraction optics diffusing screen laminate for full color on-axis viewing

Hologram lights

여기에 홀로그램을 조명하기 위해 가상의 점원으로부터 방출되는 시준되거나 또는 발산/수렴하는 빔을 생성하도록 광학 빔을 형성하는 광학기들(예. 광학기들의 어레이)이 정의된다. 또한 앞에서 반사 홀로그램을 조명하는 광학 빔 및 홀로그래픽 광학 요소(HOE) 미러와 조합되는 광학 빔이 반사 홀로그램의 배면 조명을 가능하게 하는 추가적인 구성이 기술된다.

Optical device with lanimate display for displaying color images

Secured document, system for manufacturing same and system for reading this document

A document includes at least one drawing or data produced, for example, by printing. In addition, this document includes a hologram representing part of the document. The hologram of this document is recorded using a system including a prerecorded or electrically controllable optical modulator in which the image of at least part of the document is recorded. This modulator is designed to be combined with a layer of photosensitive material. A first reference wave illuminates the layer of photosensitive material. A second wave incident on the modulator and giving rise to a third object wave is also transmitted to the layer of photosensitive material in order to interfere with the reference wave in this layer.

Functionalised disk for a vehicle

The invention relates to a functionalised disk for a vehicle. The disk (1) comprises a transparent base body (6) which has a front side (7) and a rear side (8). The base body (6) has a semitransparent incoupling region (4) and an outcoupling region (5), which is arranged at a distance from the incoupling region in a first direction (R1). The incoupling region (4) has a diffactive structure which deflects only one part of radiation coming from an object to be detected and impacting upon the front side (7), in such a way that the deflected part propagates as incoupled radiation in the base body (6) up to the outcoupling region (5) by means of reflections and impacts upon the outcoupling region (5). The outcoupling region (5) deflects at least one part of the incoupled radiation impacting upon the outcoupling region (5) in such a way that the deflected part exits the base body (6) via the front side (7) or the rear side (8) in order to impact upon the detector system (2).

Prepolymer-based polyurethane formulations for producing holographic media

본 발명은 특히 데이터 저장뿐 아니라 다양한 광학적 적용을 위한 홀로그래피 매체의 제조에 유리하게 적합한 신규 폴리우레탄 조성물에 관한 것이다. The present invention relates to novel polyurethane compositions which are particularly suited to the storage of data as well as to the production of holographic media for various optical applications.

Skew Mirrors, Methods of Use, and Methods Of Manufacture

An optical reflective device referred to as a skew mirror, having a reflective axis that need not be constrained to surface normal, is described. Examples of skew mirrors are configured to reflect light about a constant reflective axis across a relatively wide range of wavelengths. In some examples, a skew mirror has a constant reflective axis across a relatively wide range of angles of incidence. Exemplary methods for making and using skew minors are also disclosed. Skew mirrors include a grating structure, which in some examples comprises a hologram.

Optical Systems with Resolution-Enhancing Holographic Elements

An electronic device may include an optical system that redirects light from a display module towards an eye box along an optical path. The optical path may include a holographic coupler and a resolution-enhancing holographic element. The holographic element may include a first set of holograms and the coupler may include a second set of holograms. The first set of holograms may be characterized by a first set of selectivity curves having first primary lobes. The second set of holograms may be characterized by a second set of selectivity curves having second primary lobes that overlap the first primary lobes. This may configure the holographic element to narrow the second selectivity curves by diffracting some of the light out of the optical path, thereby optimizing the resolution of images in the light provided to the eye box.

Hologram Viewing Arrangement and Alignment Device

The present invention relates to a hologram viewing arrangement, to an alignment device, to a display device, to a device for aligning first and second members and to a device for aligning an optical beam with a desired target. A hologram viewing arrangement comprising a pixellated phase mask substrate ( 20 ) and a pixellated hologram display substrate ( 40 ), wherein the hologram display substrate is arranged to store data representing at least two distinct images (3 a -3 d ), the arrangement being such that disposing the phase mask in a first position with respect to the display substrate enables one of the at least two images to be visible and disposing the phase mask in a second position with respect to the display substrate enables another of the at least two images to be visible.

変化するデューティサイクルを有する周期的なパターンを印刷するための方法および装置

Method and appararus for printing a periodic pattern with a varying duty cycle

A method for forming a surface-relief grating with a desired spatial variation of duty cycle in a layer of photoresist, which method comprises providing a first mask (31) bearing a high-resolution grating of linear features (32), arranging said first mask at a first distance from a substrate (33), providing a second mask (28) bearing a variable-transmission grating of opaque and transparent linear features (27) that has a designed spatial variation of duty cycle, arranging said second mask at a distance before the first mask such that the linear features of the variable-transmission grating are orthogonal to the linear features of the high-resolution grating, illuminating the second mask while varying the first distance according to displacement Talbot lithography and also displacing the second mask at an angle to its linear features such that there is substantially no component of modulation with the period of the variable-transmission grating in the energy density distribution that exposes the photoresist.

별개의 위상 및 진폭 변조기들을 갖는 근안 3d 디스플레이

증강 현실 안경은, 공간 위상 변조기들 또는 활성 존 플레이트 변조기들에 광학적으로 커플링되고 눈 커플링 광학기들에 광학적으로 커플링된 이미지별 진폭 변조된 광의 소스들을 포함하는 근안 디스플레이들을 포함한다. 이미지별 진폭 변조된 광의 소스들은 이미지별 진폭 변조기들에 커플링된 광 소스들 또는 발광 2D 디스플레이 패널들을 포함할 수 있다. 눈 커플링 광학기들은 볼륨 홀로그래픽 회절 격자들을 포함할 수 있다.