US20040246547A1 - Replay optics for holographic displays - Google Patents
Replay optics for holographic displays Download PDFInfo
- Publication number
- US20040246547A1 US20040246547A1 US10/488,185 US48818504A US2004246547A1 US 20040246547 A1 US20040246547 A1 US 20040246547A1 US 48818504 A US48818504 A US 48818504A US 2004246547 A1 US2004246547 A1 US 2004246547A1
- Authority
- US
- United States
- Prior art keywords
- slm
- light
- replay
- optics
- illuminating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 230000004075 alteration Effects 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 230000003362 replicative effect Effects 0.000 claims description 6
- 230000001594 aberrant effect Effects 0.000 claims description 4
- 238000005286 illumination Methods 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000001427 coherent effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000010076 replication Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- XKRFYHLGVUSROY-UHFFFAOYSA-N argon Substances [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000007794 visualization technique Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/22—Processes or apparatus for obtaining an optical image from holograms
- G03H1/2294—Addressing the hologram to an active spatial light modulator
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/32—Holograms used as optical elements
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/22—Processes or apparatus for obtaining an optical image from holograms
- G03H1/2249—Holobject properties
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/22—Processes or apparatus for obtaining an optical image from holograms
- G03H1/2286—Particular reconstruction light ; Beam properties
- G03H2001/2292—Using scanning means
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
- G03H1/2645—Multiplexing processes, e.g. aperture, shift, or wavefront multiplexing
- G03H2001/2655—Time multiplexing, i.e. consecutive records wherein the period between records is pertinent per se
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
- G03H1/30—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique discrete holograms only
- G03H2001/306—Tiled identical sub-holograms
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2210/00—Object characteristics
- G03H2210/30—3D object
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2223/00—Optical components
- G03H2223/19—Microoptic array, e.g. lens array
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2225/00—Active addressable light modulator
- G03H2225/20—Nature, e.g. e-beam addressed
- G03H2225/25—Optically addressed SLM [OA-SLM]
Definitions
- the present invention relates to replay optics for holographic displays and in particular to replay optics for generating a three dimensional image from an illuminated spatial light modulator.
- a three-dimensional image may be presented by forming an interference pattern or hologram on a planer surface.
- the three-dimensional image is visible when the hologram is appropriately illuminated.
- CGHs computer generated holograms
- Interest is perhaps most intense in the medical and design fields where the need for realistic visualisation techniques is great.
- a computer generated hologram involves the generation of a matrix of data values (each data value corresponding to a light transmission level) which simulates the hologram which, might otherwise be formed on a real planer surface.
- the matrix is applied to a Spatial Light Modulator (SLM) which may be, for example, a two-dimensional array of liquid crystal elements or of acousto-optic modulators.
- SLM Spatial Light Modulator
- Coherent light is directed onto the SLM using for example a laser such that the resulting output, either reflected from the SLM or transmitted through the SLM, is a modulated light pattern.
- An example of an SLM is an Electrically Addressable SLM (EASLM).
- the SLM In order to produce a three-dimensional image of usable size and viewing angle, the SLM typically has to have a large number of pixels, e.g. 10 10 . In addition, the pixels of the SLM must be positioned relative to one another with a high degree of accuracy. The device must also be capable of modulating coherent light, e.g. produced by a laser. These requirements are extremely demanding and expensive to achieve in practice.
- FIG. 1 One approach is presented in GB2330471A and is illustrated schematically in FIG. 1.
- This document describes a holographic display technique, which is referred to as Active TilingTM, and involves the use of a relatively small EASLM 1 in combination with a relatively large Optically Addressable Spatial Light Modulator (OASLM) 2 .
- This part of the system comprises the so-called “replicating” optics.
- the holographic matrix is subdivided into a set of sub-holograms, with the data for each sub-hologram being passed in turn to the EASLM 1 .
- the EASLM 1 is illuminated from one side with incoherent light 3 .
- the OASLM 2 comprises a sheet of bistable liquid crystal (in one example the liquid crystal is a ferroelectric liquid crystal) which is switched from a first to a second state by incident light.
- Replicating optics 4 disposed between the EASLM 1 and the OASLM 2 , cause the output of the EASLM 1 (i.e. light transmitted through the EASLM 1 ) to be stepped across the rear surface of the OASLM 2 .
- the bistable nature of the OASLM liquid crystal means that the portion or “tile” 5 of the OASLM 2 onto which a sub-holographic image is projected, remembers that image until such time as the OASLM is reset by the application of an electrical voltage.
- the CGH displayed on the OASLM 2 is “read” using an arrangement such as that illustrated in FIG. 2.
- This arrangement is referred to as the “replay” optics.
- the OASLM 2 is typically illuminated with a plane wave originating from a point source 15 and the reflected light is focused down by replay optics 7 , 8 to form a 3D image.
- Normal incidence illumination is achieved with the use of a beam splitter 5 , although a slight off axis angle of illumination may alternatively be used.
- large collimating optics 6 are required to provide a large illumination wavefront.
- the need for a beam splitter 5 and collimating optics 6 adds to the cost of the system as high quality, large aperture (large FOV) optics are expensive. To reduce costs, lower quality optics may be used. However this will result in poorer performance.
- a holographic display comprising:
- a spatial light modulator SLM, arranged to display a set of tiled holographic images
- illuminating means for illuminating a surface of the SLM
- replay means for focusing light reflected from the SLM surface to present a three dimensional image
- the illuminating means comprises a light source appearing at a DC spot position of the replay means.
- the SLM is an optically addressable spatial light modulator, OASLM, and is located in front of replicating optics arranged to illuminate a rear surface of the OASLM with light corresponding to said holographic images. More preferably, an electrically addressable spatial light modulator, EASLM, is located behind the replicating optics and is arranged to display each of said holographic images in sequence.
- the SLM may be an EASLM which, being electrically addressed, does not require the use of replicating optics.
- said light source comprises a mirror
- the illuminating means further comprises a laser or other light generating means arranged to direct light onto the mirror.
- the light source may comprise a laser or other light generating means.
- the use of a mirror enables a more compact system to be produced, enhancing the viewer's ability to access the 3D image.
- said illuminating means is arranged to provide at the DC spot an aberrated point source.
- the aberration may be such that it negates aberrations in the replay optics so as to produce substantially plane wave illumination of the SLM.
- the illuminating means preferably comprises aberrating optics in front of the light generating means. Using this mechanism, it is possible to use lower quality replay optics and/or improve perceived image quality.
- the illuminating means comprises one or more optical elements for introducing aberrations into the light emanating at the point source.
- a holographic display comprising:
- a spatial light modulator SLM, arranged to display one or more holographic images
- replay means for focusing light reflected from the SLM surface to present a three dimensional image
- a light source for illuminating a surface of the SLM and arranged to provide an aberrated point source appearing substantially at a DC spot position of the replay means so as to compensate for aberrations in the replay optics.
- the light source may comprise light generating means such as a laser.
- the light generating means may be located at the DC spot, or the light source may additionally comprise a mirror located near the DC spot, with light from the light generating means being directed at the mirror which reflects the light into the replay optics.
- a spatial light modulator SLM forming part of a holographic display
- the aberrations may be introduced into the light so that the light which is incident on said surface of the SLM to illuminate the SLM is substantially in the form of a plane wave.
- FIG. 1 illustrates replication optics of an Active TilingTM holographic display system
- FIG. 2 illustrates replay optics of an Active TilingTM holographic display system
- FIG. 3 illustrates replay optics of a holographic display system with a point source appearing to be located at the DC spot
- FIG. 4 illustrates in detail a modified light source for use in replay optics of a holographic display system
- FIG. 5 illustrates modified replay optics for use in a holographic display system and comprising the modified light source of FIG. 4.
- FIG. 3 illustrates a simplified replay system comprising a single lens 7 arranged to direct light to and from the surface of an optically addressable spatial light modulator (OASLM) 2 which forms part of the holographic display of FIG. 1 (it will be appreciated that in practice the replay optics may comprise further lenses and optical components).
- FIG. 3 illustrates the DC spot position 10 of the replay optics, this being the point at which specularly reflected light from the OASLM 2 (illuminated with a plane wave) comes to a focus.
- a point source of light 11 which may comprise a laser is located off axis, with light from the point source being directed onto the reflecting surface of a mirror 12 .
- the mirror 12 is oriented at an angle of 45 degrees to the optical axis of the replay optics.
- the point source 11 and the mirror 12 are arranged with respect to one another such that the light reflected by the mirror 12 appears to originate from the DC spot position 10 .
- FIG. 3 traces the light rays through the replay optics.
- the light originating from the point source 11 tends to be incident on the surface of the OASLM 2 as a plane wave.
- the CGH image displayed on the OASLM 2 appears as a three dimensional image at an image point 13 .
- the conjugate image (appearing beneath the optical axis as viewed in FIG. 3) and DC spot may be blocked by the mirror 12 and the point source 11 (and possibly an additional block not illustrated in FIG. 3).
- the illumination wavelength is 514.5 nm (corresponding to an Argon ion laser).
- the large lens is spherical plano-convex, 30 mm thick with a radius of curvature of 1100 mm, made from BK7 glass.
- the lens has a focal length (f) of 2.11 m at a wavelength of 514.5 nm
- the hologram is 280 ⁇ 160 mm with 7 ⁇ 7 um pixels.
- the replay is based on an f-f system where the lens is a distance f from hologram.
- Holograms are complicated diffraction gratings.
- the replay of a single image point by a hologram can readily be simulated by considering the propagation of a wavefront through (or reflected from) a grating. This process was used in the simulation of the replay from a hologram using ZEMAXTM.
- the minimum spatial light modulation period (or grating period) in the hologram is 14 um which yields a diffraction angle of 2.1°. Rays diffracted at this angle were considered to form the image point.
- a point light source is positioned such that its reflection in a small mirror coincides with the DC spot position.
- the production of such a point source would be simple for one skilled in the art, e.g. illuminating a microscope objective with a laser beam. This is equivalent to introducing a spherical wavefront into the system. This wave front is propagated by ray tracing through the lens to the hologram. At the hologram, both the specularly reflected rays (which produce the DC spot) and the diffracted rays (that produce the image point) are calculated. These are propagated back through the lens to the image region. The intersects of these rays on a plane at the desired image point are determined. This yields a spot diagram that indicates how small an image point is produced (generally, a smaller spot is more desirable).
- the insert A shown in FIG. 3 illustrates the spot produced at the image point with a point light source located at the DC spot, as simulated by the ZEMAXTM system.
- the relatively large size of this spot is a result of imperfections, i.e. aberrations, in the replay optics. It is possible to compensate for the effects of the aberrations by introducing aberrations into the light emanating from the point source.
- FIG. 4 illustrates one possible sequence of optical components 14 for introducing aberrations into the point source light, and which would be located between the point source 11 and the mirror 12 .
- the exact nature of the optical components may be determined by for example analysing the spot pattern A produced by the replay optics in the absence of the compensating optics 14 . It is noted that at least a part of the compensation may be designed into the mirror 12 .
- FIG. 5 illustrates replay optics incorporating compensating optics 15 which introduces an optimised wavefront into the system.
- a single plano-convex aspheric lens illuminated with a plane wave, is used to produce the wavefront.
- the lens is 17.9 mm thick, made from BK7 glass, and has a base radius of curvature of 48.3 mm.
- ZEMAXTM was programmed to optimise the profile of the aspheric lens to minimise the image spot size. A reduced spot size is clearly demonstrated in the insert B.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Holo Graphy (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/494,766 US7317564B2 (en) | 2001-08-30 | 2006-07-28 | Replay optics for holographic displays |
US11/943,557 US7602539B2 (en) | 2001-08-30 | 2007-11-20 | Replay optics for holographic displays |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0120981A GB2379347A (en) | 2001-08-30 | 2001-08-30 | Replay optics for holographic displays |
GB0120981.6 | 2001-08-30 | ||
PCT/GB2002/003839 WO2003021306A2 (en) | 2001-08-30 | 2002-08-21 | Replay optics for holographic displays |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/494,766 Continuation US7317564B2 (en) | 2001-08-30 | 2006-07-28 | Replay optics for holographic displays |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040246547A1 true US20040246547A1 (en) | 2004-12-09 |
Family
ID=9921192
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/488,185 Abandoned US20040246547A1 (en) | 2001-08-30 | 2002-08-21 | Replay optics for holographic displays |
US11/494,766 Expired - Lifetime US7317564B2 (en) | 2001-08-30 | 2006-07-28 | Replay optics for holographic displays |
US11/943,557 Expired - Lifetime US7602539B2 (en) | 2001-08-30 | 2007-11-20 | Replay optics for holographic displays |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/494,766 Expired - Lifetime US7317564B2 (en) | 2001-08-30 | 2006-07-28 | Replay optics for holographic displays |
US11/943,557 Expired - Lifetime US7602539B2 (en) | 2001-08-30 | 2007-11-20 | Replay optics for holographic displays |
Country Status (6)
Country | Link |
---|---|
US (3) | US20040246547A1 (de) |
EP (1) | EP1421416B1 (de) |
AT (1) | ATE456814T1 (de) |
DE (1) | DE60235246D1 (de) |
GB (1) | GB2379347A (de) |
WO (1) | WO2003021306A2 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060181682A1 (en) * | 2003-01-21 | 2006-08-17 | Miller Richard J | Image projection device and method |
US11693364B2 (en) | 2017-11-30 | 2023-07-04 | Samsung Electronics Co., Ltd. | Holographic display and holographic image forming method |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2379347A (en) * | 2001-08-30 | 2003-03-05 | Holographic Imaging Llc | Replay optics for holographic displays |
US7525541B2 (en) * | 2004-04-05 | 2009-04-28 | Actuality Systems, Inc. | Data processing for three-dimensional displays |
GB0512179D0 (en) * | 2005-06-15 | 2005-07-20 | Light Blue Optics Ltd | Holographic dispaly devices |
KR101367573B1 (ko) | 2005-12-22 | 2014-02-25 | 시리얼 테크놀로지즈 에스.에이. | 홀로그래픽 재구성 장면에서의 불균일한 밝기 인식의 보정 방법 |
KR101442848B1 (ko) * | 2005-12-22 | 2014-09-22 | 시리얼 테크놀로지즈 에스.에이. | 비디오 홀로그램용 디스플레이 장치에 화상 내용을멀티모드로 표시하기 위한 방법 및 멀티모드 디스플레이장치 |
JP5128582B2 (ja) | 2006-05-12 | 2013-01-23 | シーリアル テクノロジーズ ソシエテ アノニム | ホログラフィック投影システム及び方法 |
US7701381B2 (en) * | 2008-07-18 | 2010-04-20 | Raytheon Company | System and method of orbital angular momentum (OAM) diverse signal processing using classical beams |
WO2012062681A1 (de) * | 2010-11-08 | 2012-05-18 | Seereal Technologies S.A. | Anzeigegerät, insbesondere ein head-mounted display, basierend auf zeitlichen und räumlichen multiplexing von hologrammkacheln |
US9513600B2 (en) * | 2012-11-08 | 2016-12-06 | Panasonic Intellectual Property Management Co., Ltd. | Display device using computer generated hologram |
US9310769B2 (en) | 2013-03-28 | 2016-04-12 | Disney Enterprises, Inc. | Coarse integral holographic display |
CN110083043A (zh) * | 2019-05-20 | 2019-08-02 | 上海格乐丽雅文化产业有限公司 | 一种3d全息成像方法 |
USD1038082S1 (en) | 2021-07-14 | 2024-08-06 | Sky Cp Limited | Remote control |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5164848A (en) * | 1989-11-03 | 1992-11-17 | Gec Marconi Limited | Helmet mounted display |
US5963667A (en) * | 1996-03-26 | 1999-10-05 | Olympus Optical Co., Ltd. | Multiplexing optical system and feature vector transformation apparatus using the same; feature vector detecting and transmitting apparatus; and recognition and classification system using these apparatuses |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0656555B1 (de) * | 1993-12-01 | 2003-03-19 | Sharp Kabushiki Kaisha | Display für dreidimensionale Bilder |
GB2330471A (en) * | 1997-10-15 | 1999-04-21 | Secr Defence | Production of moving images for holography |
GB2350963A (en) * | 1999-06-09 | 2000-12-13 | Secr Defence | Holographic Displays |
GB2379347A (en) * | 2001-08-30 | 2003-03-05 | Holographic Imaging Llc | Replay optics for holographic displays |
-
2001
- 2001-08-30 GB GB0120981A patent/GB2379347A/en not_active Withdrawn
-
2002
- 2002-08-21 DE DE60235246T patent/DE60235246D1/de not_active Expired - Lifetime
- 2002-08-21 US US10/488,185 patent/US20040246547A1/en not_active Abandoned
- 2002-08-21 WO PCT/GB2002/003839 patent/WO2003021306A2/en not_active Application Discontinuation
- 2002-08-21 EP EP02765003A patent/EP1421416B1/de not_active Expired - Lifetime
- 2002-08-21 AT AT02765003T patent/ATE456814T1/de not_active IP Right Cessation
-
2006
- 2006-07-28 US US11/494,766 patent/US7317564B2/en not_active Expired - Lifetime
-
2007
- 2007-11-20 US US11/943,557 patent/US7602539B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5164848A (en) * | 1989-11-03 | 1992-11-17 | Gec Marconi Limited | Helmet mounted display |
US5963667A (en) * | 1996-03-26 | 1999-10-05 | Olympus Optical Co., Ltd. | Multiplexing optical system and feature vector transformation apparatus using the same; feature vector detecting and transmitting apparatus; and recognition and classification system using these apparatuses |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060181682A1 (en) * | 2003-01-21 | 2006-08-17 | Miller Richard J | Image projection device and method |
US7470028B2 (en) * | 2003-01-21 | 2008-12-30 | Richard J Miller | Image projection device and method |
US20090122266A1 (en) * | 2003-01-21 | 2009-05-14 | F. Poszat Hu, Llc | Image projection device and method |
US7798650B2 (en) | 2003-01-21 | 2010-09-21 | Miller Richard J | Image projection device and method |
US11693364B2 (en) | 2017-11-30 | 2023-07-04 | Samsung Electronics Co., Ltd. | Holographic display and holographic image forming method |
Also Published As
Publication number | Publication date |
---|---|
US20080186546A1 (en) | 2008-08-07 |
GB0120981D0 (en) | 2001-10-24 |
WO2003021306A2 (en) | 2003-03-13 |
ATE456814T1 (de) | 2010-02-15 |
US20070053034A1 (en) | 2007-03-08 |
WO2003021306A3 (en) | 2003-04-17 |
EP1421416A2 (de) | 2004-05-26 |
EP1421416B1 (de) | 2010-01-27 |
DE60235246D1 (de) | 2010-03-18 |
US7317564B2 (en) | 2008-01-08 |
US7602539B2 (en) | 2009-10-13 |
GB2379347A (en) | 2003-03-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7317564B2 (en) | Replay optics for holographic displays | |
US6760135B1 (en) | Holographic displays | |
KR20090021264A (ko) | 영상 형성 방법 및 영상 투사 장치 | |
KR20090027751A (ko) | 장면 재구성용 홀로그래픽 투사 장치 | |
US7379219B2 (en) | Method and apparatus for illuminating a computer generated hologram | |
US11853006B2 (en) | Light engine | |
WO2024175047A1 (zh) | 一种多角度同时照明的全息近眼显示装置和眼瞳箱扩展方法 | |
Kollin et al. | Optical engineering challenges of the virtual retinal display | |
JP2009540353A (ja) | エレクトロホログラフィックディスプレイにおける実効画素ピッチを低減する方法及び低減された実効画素ピッチを含むエレクトロホログラフィックディスプレイ | |
CN116339099A (zh) | 计算光学系统的虚拟图像的全息图的方法 | |
CN116300081B (zh) | 紧凑型平视显示器及其波导 | |
US20230367115A1 (en) | Compact head-up display and waveguide therefor | |
KR20240133542A (ko) | 광학 시스템 | |
CN118348762A (zh) | 全息投影仪和方法 | |
CN117075347A (zh) | 一种大眼瞳箱全息近眼显示装置和显示方法 | |
Lin | The Application of Volume Holographic Optical Elements for Computer-generated Hologram Technique | |
GB2621599A (en) | Hologram waveguiding | |
KR20240110478A (ko) | 홀로그래픽 프로젝터 | |
KR20240143808A (ko) | 디스플레이 장치용 드라이버 | |
KR20240143809A (ko) | 디스플레이 장치용 드라이버 | |
KR20230156259A (ko) | 헤드-업 디스플레이 | |
CN117111305A (zh) | 一种大视场角全息近眼显示装置和显示方法 | |
CN117980794A (zh) | 全息系统及其光瞳扩展器 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HOLOGRAPHIC IMAGING LLC, MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PAYNE, DOUGLAS;REEL/FRAME:015663/0268 Effective date: 20040211 |
|
AS | Assignment |
Owner name: QINETIQ LIMITED, UNITED KINGDOM Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HOLOGRAPHIC IMAGING LLC;REEL/FRAME:017366/0295 Effective date: 20051212 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |
|
AS | Assignment |
Owner name: F. POSZAT HU, LLC, DELAWARE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:QINETIQ LIMITED COMPANY;REEL/FRAME:019148/0233 Effective date: 20070327 |