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1. 发明公开

EP4400915A1 A HOLOGRAPHIC PROJECTOR AND METHOD 审中-实审
公开(公告)号：EP4400915A1
公开(公告)日：2024-07-17
申请号：EP23204585.6
申请日：2023-10-19
申请人： Envisics Ltd.
发明人： BOARDMAN, Edward , SMEETON, Timothy , MALIN-CLEGG, Hugo , BURNHAM, Daniel , COLE, Alexander
IPC分类号： G03H1/22 , G03H1/32
CPC分类号： G03H1/2294 , G03H1/2205 , G03H1/32 , G03H2223/1320130101 , G03H2223/1420130101 , G03H2223/2320130101 , G03H2223/2620130101 , G03H2223/5520130101 , G03H2227/0320130101 , G03H2223/1820130101 , G03H2223/1620130101
摘要： There is provided holographic projector comprising a display device arranged to form a holographic wavefront by spatially modulating light in accordance with a hologram of a picture displayed thereon. The holographic projector further comprises a magnification system comprising a first lens and a second lens. The first lens is arranged form a holographic reconstruction of the picture by focusing the holographic wavefront towards / substantially at a front focal plane of the first lens. The holographic reconstruction of the picture comprises a plurality of pixels. The holographic projector further comprises a kinoform being disposed between the first lens and the second lens and being arranged to apply a phase-delay to each pixel of the holographic reconstruction such that the phase-delay applied to each pixel is different to the phase-delay of the adjacent pixels. The holographic projector further comprises a movement assembly arranged to move the kinoform such that a plurality of different phase-delays are applied to each pixel of the holographic reconstruction within the integration time of the human eye. The kinoform comprises an array of zones and is arranged such that the width and / or the height of each zone is substantially equal to the distance between adjacent pixels of the holographic reconstruction.

2. 发明公开

EP3486696A1 ILLUMINATION DEVICE, PROJECTION DEVICE, AND PROJECTION-TYPE DISPLAY DEVICE 有权
公开(公告)号：EP3486696A1
公开(公告)日：2019-05-22
申请号：EP18214351.1
申请日：2011-09-08
申请人： Dai Nippon Printing Co., Ltd.
发明人： TAKANOKURA, Tomoe , ISHIDA, Kazutoshi , KURASHIGE, Makio , OOYAGI, Yasuyuki
IPC分类号： G02B5/18 , G02B5/32 , G02B26/10 , G02B27/48 , G03B21/20 , G03B33/06 , G03H1/32 , H04N9/31
摘要： Provided is an illumination device comprising an optical element including a hologram recording medium which is configured to diffract first coherent light beams having a first wavelength range so as to reproduce first images of a scattering plate; and diffract second coherent light beams having a second wavelength range which is different from the first wavelength range so as to reproduce second images of the scattering plate; and an irradiation device configured to irradiate the optical element with light beams having different wavelength ranges so as to allow the first coherent light beams and the second coherent light beams to scan the hologram recording medium, wherein the optical element includes a first hologram element and a second hologram element, the first and second hologram elements being arranged side by side on one plane so as to constitute the hologram recording medium as a computer generated hologram recording medium, wherein the first hologram element is provided corresponding to the first coherent light beams having the first wavelength range and is configured to diffract the first coherent light beams so as to illuminate an illuminated zone having a pattern, wherein the second hologram element is provided corresponding to the second coherent light beams having the second wavelength range and is configured to diffract the second coherent light beams so as to illuminate the illuminated zone having the pattern, and wherein the irradiation device and the optical element are arranged such that: the first coherent light beams incident from the irradiation device on respective positions of the hologram recording medium are diffracted by the hologram recording medium and illuminate the same illuminated zone; and the second coherent light beams incident from the irradiation device on respective positions of the hologram recording medium are diffracted by the hologram recording medium and illuminate the same illuminated zone.

3. 发明公开

EP3404452A1 PROJECTION TYPE IMAGE DISPLAY APPARATUS AND CORRESPONDING METHOD 有权
公开(公告)号：EP3404452A1
公开(公告)日：2018-11-21
申请号：EP18182384.0
申请日：2010-09-07
申请人： Dai Nippon Printing Co., Ltd.
发明人： KURASHIGE, Makio , ISHIDA, Kazutoshi , TAKANOKURA, Tomoe , OYAGI, Yasuyuki
IPC分类号： G02B5/02 , G02B3/00 , G02B5/32 , G03H1/00 , G03H1/22 , G03H1/32 , G02B27/48 , G03B21/20 , G03B33/06 , H04N9/31
摘要： A projection type image display apparatus that carries out image display by projecting light onto a screen (400), comprising:
a spatial light modulator (200); an illumination unit (110) that supplies illumination light (L46) to the spatial light modulator (200); and a projection optical system (300) that projects the image onto the screen, wherein:
the illumination unit (110) includes: a hologram recording medium (46) on which an image (35) of a scatter plate (30) is recorded, a coherent light source (50) that generates a coherent light beam (L50), and
a light beam scanning device (65) that irradiates the light beam (L65) onto the hologram recording medium while moving the light beam (L65) parallel, and
the spatial light modulator (200) is disposed at a production position of the reproduction image (35) of the scatter plate (30) obtained from the hologram recording medium (46); and corresponding illumination method.

4. 发明授权

EP2720089B1 Illumination device, projection device, and projection-type image display device 有权转让
公开(公告)号：EP2720089B1
公开(公告)日：2018-08-15
申请号：EP13002139.7
申请日：2011-09-08
申请人： DAI NIPPON PRINTING CO., LTD.
发明人： Kurashige, Makio , Ishida, Kazutoshi , Takanokura, Tomoe , Ooyagi, Yasuyuki
IPC分类号： G02B27/28 , G02B27/48 , G02B21/14 , G03B21/40 , G03B35/18 , G03H1/00 , G02B5/02 , G03B21/20 , G03H1/22 , G03H1/32 , G03B21/14
CPC分类号： G03B21/14 , F21V9/14 , G02B5/0252 , G02B27/286 , G02B27/48 , G03B21/2033 , G03B21/2066 , G03B21/2073 , G03B21/208 , G03B21/40 , G03B35/18 , G03H1/0005 , G03H1/20 , G03H1/22 , G03H1/2286 , G03H1/32 , G03H2222/31 , G03H2222/36
摘要： Provided is an illumination device for a projection device, which is appropriate to stereoscopic display and allows speckles to be inconspicuous. The illumination device includes: an optical element (50) which including a hologram recording medium (55) including a first zone Z1 and a second zone Z2 and can reproduce an image 5 of a scattering plate 6; an irradiation device (60) which irradiates the optical element with a coherent light beam such that the light beam is allowed to scan the hologram recording medium; and a polarization control unit (70) provided on an optical path of the light beam to an illuminated zone (LZ). The light beams incident on respective positions of the hologram recording medium are allowed to reproduce the image superimposed on the illuminated zone. The polarization control unit (70) controls polarization of the light beams such that the light beam incident on the first zone to travel toward the illuminated zone and the light beam incident on the second zone to travel toward the illuminated zone are configured with different polarization components.

5. 发明公开

EP2615496A4 ILLUMINATION DEVICE, PROJECTION DEVICE, AND PROJECTION-TYPE IMAGE DISPLAY DEVICE 有权
标题翻译：照明装置，投影设备和投影影像显示装置
公开(公告)号：EP2615496A4
公开(公告)日：2016-03-09
申请号：EP11823653
申请日：2011-09-08
申请人： DAINIPPON PRINTING CO LTD
发明人： TAKANOKURA TOMOE , ISHIDA KAZUTOSHI , KURASHIGE MAKIO , OOYAGI YASUYUKI
IPC分类号： G02B5/18 , G02B5/32 , G02B26/10 , G02B27/09 , G02B27/48 , G03B21/20 , G03B33/06 , G03H1/22 , G03H1/32 , H04N9/31
CPC分类号： G02B27/0944 , G02B5/1842 , G02B5/32 , G02B26/105 , G02B27/48 , G03B21/14 , G03B21/2033 , G03B21/2066 , G03B21/208 , G03B21/28 , G03B33/06 , G03B33/12 , G03H1/02 , G03H1/32 , G03H2001/2292 , H04N5/89 , H04N9/3111 , H04N9/3129 , H04N9/3161
摘要： Provided is an illumination device which illuminates an illuminated zone with a plurality of coherent light beams having mutually different wavelength ranges, so that it is possible to allow speckles to be inconspicuous. A illumination device (40) is configured to include an optical element (50) including a hologram recording medium (55) and an irradiation device (60) which illuminates the optical element with a plurality of coherent light beams having mutually different wavelength ranges so as to allow a first and second coherent light beams (La, Lb) having different wavelength ranges to scan the hologram recording medium of the optical element. The first coherent light beams incident on respective positions of the hologram recording medium are allowed to reproduce an image (5) superimposed on an illuminated zone, and the second coherent light beams incident on the respective positions of the hologram recording medium are allowed to reproduce an image superimposed on the illuminated zone.

6. 发明公开

EP2644966A4 SURFACE LIGHTING DEVICE AND BACKLIGHT DEVICE 失效
标题翻译：表面照明和背光装置
公开(公告)号：EP2644966A4
公开(公告)日：2015-07-15
申请号：EP11843234
申请日：2011-11-25
申请人： DAINIPPON PRINTING CO LTD
发明人： KURASHIGE MAKIO , OOYAGI YASUYUKI
IPC分类号： F21S2/00 , F21V8/00 , F21Y101/02 , G02B5/32 , G02F1/1335 , G02F1/13357 , G03H1/22 , G03H1/32
CPC分类号： G02B6/0013 , G02B5/32 , G02B6/0023 , G02B6/003 , G02B6/0031 , G02B6/0066 , G02F1/133615 , G03H1/32 , G03H2001/2292
摘要： A plane illumination apparatus has an optical device, an irradiation unit, and a light guide plate. The irradiation unit makes the coherent light beams scan the surface of the optical device, the light guide plate comprises a light take-out portion to take out coherent light beams to outside while making coherent light beams propagate between a first end face on which coherent light beams from the optical device are incident and a second end face provided to face the first end face, the specific zone is provided inside the light take-out portion or along the first end face, or along the second end face, the light take-out surface is a third end face that is connected to the first and second end faces, and the irradiation unit is provided at a rear side of a fourth end face that is an opposite side to the light take-out surface.

7. 发明公开

EP2703886A4 PROJECTION DEVICE AND PROJECTION CONTROL DEVICE 有权
标题翻译：投影装置和投影控制装置
公开(公告)号：EP2703886A4
公开(公告)日：2014-11-05
申请号：EP12777365
申请日：2012-04-19
申请人： DAINIPPON PRINTING CO LTD
发明人： KURASHIGE MAKIO , TANIGUCHI YUKIO , OOYAGI YASUYUKI
IPC分类号： G03B21/00 , G02B5/32 , G02B27/48 , G03B21/14 , G03B21/20 , G03B21/22 , G03H1/02 , G03H1/04 , G03H1/22 , G03H1/32
CPC分类号： G03B21/2066 , G02B5/32 , G02B26/105 , G02B27/48 , G03B21/142 , G03B21/2033 , G03B21/208 , G03H1/0402 , G03H1/2286 , G03H1/2294 , G03H1/32 , G03H2001/0439 , G03H2001/2292 , H04N9/3129
摘要： A projection apparatus has an optical device configured to be capable of diffusing coherent light beams, an irradiation unit configured to irradiate the coherent light beams to the optical device so that the coherent light beams scan the optical device, a light modulator that is illuminated by coherent light beams incident on and diffused at respective points of the optical device from the irradiation unit, a projection optical system configured to project a modulated image generated by the light modulator onto a scattering plane, and an intermediate optical system provided between the optical device and the light modulator, configured to restrict an diffusion angle of coherent light beams diffused by the optical device.
摘要翻译：投影装置具有配置为能够漫射相干光束的光学装置，被配置为将相干光束照射到光学装置以使相干光束扫描光学装置的照射单元，被相干光照射的光调制器入射并在来自照射单元的光学装置的各个点处扩散的光束;投影光学系统，被配置为将由光调制器产生的调制图像投影到散射面上;以及中间光学系统，设置在光学装置与光调制器，被配置为限制由光学器件扩散的相干光束的扩散角。

8. 发明公开

EP2791736A1 VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG EINES HOLOGRAPHISCHEN BILDSCHIRMES FÜR ELEKTRONISCHE AUFPROJEKTION 审中-公开
标题翻译：方法和制造装置中的全息屏电子前投影
公开(公告)号：EP2791736A1
公开(公告)日：2014-10-22
申请号：EP12816251.8
申请日：2012-12-04
申请人： Airbus Defence and Space GmbH
发明人： HALLDORSSON, Thorsteinn , PRÜCKLMEIER, Andreas , BABST, Ulrich , HOCHENBLEICHER, Gerhard , KLEPZIG, Christian
IPC分类号： G03H1/32 , G03H1/04 , G02B5/32 , G02B27/48 , G03B21/56 , G02B27/10 , G03H1/30
CPC分类号： G03H1/0476 , G02B5/32 , G02B27/106 , G02B27/48 , G03B21/60 , G03H1/30 , G03H1/32 , G03H2001/0439 , G03H2001/0478 , G03H2001/0482 , G03H2001/2271 , G03H2222/18 , G03H2222/33 , G03H2222/36 , G03H2227/03 , H04N9/3161
摘要： The invention relates to a method and a device (48) for producing screen holograms for front projection involving covering the screen (14, 96) with individual holographic image pixels (72), wherein the screen pixels (72) are provided by combining at least one first lighting beam (20) and one second lighting beam (22) and different angle alignments of at least one of the lighting beams (22) using different radiation directions.
摘要翻译：本发明涉及一种方法和一种装置（48），用于生产屏全息图前投影涉及覆盖与个别全息图像像素worin屏幕像素（72）通过至少组合所提供的屏幕（14，96）（72）一个第一照明光束（20）和一个第二照明光束（22），并使用不同的辐射方向上的照明光束中的至少一个（22）的不同的角度对准。

9. 发明公开

EP2615363A4 ILLUMINATION DEVICE USING COHERENT LIGHT SOURCE 有权
标题翻译：与相干光源照明装置
公开(公告)号：EP2615363A4
公开(公告)日：2014-10-15
申请号：EP10857013
申请日：2010-09-07
申请人： DAINIPPON PRINTING CO LTD
发明人： KURASHIGE MAKIO
IPC分类号： F21S2/00 , F21Y101/02 , G02B5/02 , G02B5/32 , G02B27/48 , G03B21/00 , G03B21/20 , G03B33/06 , G03H1/00 , G03H1/22 , G03H1/26 , G03H1/32 , H04N9/31
CPC分类号： G03H1/32 , F21V5/004 , F21V14/00 , F21V14/04 , F21Y2101/00 , F21Y2115/10 , F21Y2115/30 , G02B3/08 , G02B5/0252 , G02B5/32 , G02B27/48 , G03B21/2033 , G03B21/208 , G03B33/06 , G03H1/0005 , G03H1/02 , G03H1/0244 , G03H1/0248 , G03H1/0402 , G03H1/22 , G03H1/2286 , G03H2001/0204 , G03H2001/0212 , G03H2001/0216 , G03H2001/0413 , G03H2001/0415 , G03H2001/0428 , G03H2001/0439 , G03H2001/045 , G03H2001/2292 , G03H2001/262 , G03H2222/36 , H04N9/3129
摘要： A laser beam (L50) generated by a laser light source (50) is reflected by a light beam scanning device (60), and irradiated onto a hologram recording medium (45). On the hologram recording medium (45), an image (35) of a scatter plate is recorded as a hologram by using reference light that converges on a scanning origin (B). The light beam scanning device (60) bends the laser beam (L50) at the scanning origin (B) and irradiates it onto the hologram recording medium (45). At this time, scanning is carried out by changing the bending mode of the laser beam with time so that the irradiation position of the bent laser beam (L60) on the hologram recording medium (45) changes with time. Regardless of the beam irradiation position, diffracted light (L45) from the hologram recording medium (45) reproduces the same reproduction image (35) of the scatter plate at the same position. An illumination spot in which speckles are reduced is formed on the light receiving surface (R) of an illuminating object (70) by the reproduction image (35) of the hologram.

10. 发明公开

EP1303796A2 SYSTEMS AND METHODS FOR SPECKLE REDUCTION THROUGH BANDWIDTH ENHANCEMENT 有权
标题翻译：装置和一种用于减少SPECKLESMUSTERN BY增加带宽
公开(公告)号：EP1303796A2
公开(公告)日：2003-04-23
申请号：EP01951016.3
申请日：2001-07-10
申请人： CORPORATION FOR LASER OPTICS RESEARCH
发明人： MANNI, Jeffrey, Glenn , MARTINSEN, Robert, Jens
IPC分类号： G03H1/32 , G02B27/48
CPC分类号： H04N9/3161 , G02B27/48 , H04N9/315
摘要： A laser imaging system with reduced speckle is disclosed. The laser imaging system includes spatially superpositioned 1-D arrays or alternatively 2-D arrays of independent emitters of laser radiation, with each emitter having a spectral bandwidth Δμi centered at some arbitrary wavelength μ0i. The elements of the array are allowed, by design, to have a slightly different central wavelength, thereby creating an ensemble bandwidth ΔΜ which is much greater than the bandwidth Δμi of any individual emitter in the array. The resulting increased bandwidth reduces speckle in a displayed image.

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