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公开(公告)号：US20200166754A1
公开(公告)日：2020-05-28
申请号：US16630648
申请日：2018-07-12
发明人： Norbert LEISTER , Bo KROLL , Gerald FUTTERER
摘要： A display device for representing two-dimensional and/or three-dimensional objects or scenes, having at least one spatial light modulation device having pixels for modulating light, at least one optical system, and at least one light guiding device. Light beams originating from the individual pixels of the spatial light modulation device are incident on the at least one light guiding device at different angles on average in relation to the surface of the at least one light guiding device and can be coupled therein, whereby a coupling angular spectrum is definable. The light beams propagating in the at least one light guiding device can be coupled out of the at least one light guiding device at different angles on average in relation to an observer region, whereby a decoupling angular spectrum is definable. The decoupling angular spectrum is enlarged in comparison to the coupling angular spectrum.
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公开(公告)号：US20170357098A1
公开(公告)日：2017-12-14
申请号：US15687585
申请日：2017-08-28
发明人： Bo KROLL , Gerald FUTTERER , Norbert LEISTER , Stephan REICHELT , Ralf HAUSSLER
IPC分类号： G02B27/22 , G02B27/00 , G03H1/02 , H04N13/04 , G03H1/22 , G02F1/29 , G02B26/08 , G02B5/32 , G03H1/26 , G02F1/13
CPC分类号： G02B27/22 , G02B5/32 , G02B26/08 , G02B27/0093 , G02B27/2214 , G02B27/225 , G02F1/1313 , G02F1/292 , G03H1/02 , G03H1/22 , G03H1/2205 , G03H1/2294 , G03H1/2645 , G03H1/265 , G03H2001/0212 , G03H2001/221 , G03H2001/2223 , G03H2001/2236 , G03H2001/2242 , G03H2001/2292 , G03H2001/2655 , G03H2001/266 , G03H2222/34 , G03H2222/36 , G03H2225/33 , G03H2226/05 , H04N13/305 , H04N13/31 , H04N13/32 , H04N13/322 , H04N13/366
摘要： For comfortable viewing of a 3-D scene at various viewing angles, a display having a large tracking range for a variable viewer distance is required. A controllable light-influencing element deflects light in coarse steps in a viewer range. Within said steps, the light is deflected by a further controllable light-influencing element continuously or with fine gradation. The light modulation device is suitable in holographic or autostereoscopic displays for guiding the visibility ranges of the image information to be displayed so as to follow the eyes of the viewers.
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公开(公告)号：US20160327906A1
公开(公告)日：2016-11-10
申请号：US15109421
申请日：2015-01-05
发明人： Gerald FUTTERER
IPC分类号： G03H1/22 , G02B26/08 , G03H1/02 , G02B26/06 , G02F1/1335
CPC分类号： G03H1/2294 , G02B26/06 , G02B26/0833 , G02F1/133553 , G02F2001/133538 , G02F2001/133616 , G02F2203/50 , G03H1/02 , G03H1/2205 , G03H1/2286 , G03H2001/0224 , G03H2001/0858 , G03H2222/18 , G03H2222/35 , G03H2223/16 , G03H2223/19 , G03H2223/20 , G03H2223/22 , G03H2223/24 , G03H2225/22 , G03H2225/24 , G03H2225/33 , G03H2225/34 , G03H2225/36 , G03H2225/55
摘要： The invention relates to a display device for holographic reconstruction. The display device comprises a spatial light modulator device having combined phase modulating pixels and amplitude modulating pixels, an illumination unit generating sufficiently coherent light and arranged to illuminate of the spatial light modulator device and a reflection plane. The device being arranged such that light enters the spatial light modulator device and passes both the phase modulating pixel and the amplitude modulating pixel of the spatial light modulator device. The light is reflected by the reflection plane in between.
摘要翻译： 本发明涉及一种用于全息重建的显示装置。 显示装置包括具有组合的相位调制像素和幅度调制像素的空间光调制器装置，照明单元产生足够相干的光并被布置成照亮空间光调制器装置和反射平面。 该装置被布置成使得光进入空间光调制器装置并且通过空间光调制装置的相位调制像素和幅度调制像素。 光线之间的反射平面反射。
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公开(公告)号：US20130188391A1
公开(公告)日：2013-07-25
申请号：US13739323
申请日：2013-01-11
发明人： Gerald FUTTERER
IPC分类号： F21V8/00
CPC分类号： G02B6/0031 , G02B6/0026 , G02B6/0028 , G02B6/005 , G09F13/04 , G09F13/14 , G09F13/18
摘要： The invention relates to an optical arrangement having a light source, which emits a beam, and having a light guide, which has a light-guiding layer, in which the coupled-in beam is guided between two substantially mutually opposite surface-type reflection layers. The optical arrangement is characterized in that the optical light paths of the individual rays of the beam, in particular at least of the marginal rays, from the light source to impingement on one of the reflection layers are substantially of equal length.
摘要翻译： 本发明涉及一种光学装置，其具有发射光束的光源，并且具有导光体，该导光体具有光导层，其中耦合光束在两个基本相互相对的表面型反射层之间被引导 。 光学装置的特征在于，来自光源的光束的各个光线，特别是至少边缘光线的光学光路径到达一个反射层上的冲击基本上是相等的长度。
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5.发明申请公开(公告)号：US20220229335A1
公开(公告)日：2022-07-21
申请号：US17711207
申请日：2022-04-01
IPC分类号： G02F1/1343 , G02F1/1347 , G02F1/29 , G03H1/02 , G03H1/22 , G02B30/20 , G02B30/00
摘要： 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.
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公开(公告)号：US20210223738A1
公开(公告)日：2021-07-22
申请号：US16066803
申请日：2016-12-23
发明人： Gerald FUTTERER
IPC分类号： G03H1/26
摘要： The invention relates to a display device for holographic reconstruction of two-dimensional and/or three-dimensional objects. The objects include a plurality of object points. The display device comprises an illumination unit, a spatial light modulator device and a separator. The illumination device emits sufficiently coherent light. Sub-holograms of object points to be displayed are encoded in pixels of the spatial light modulator device. The separator is provided for separating adjacent point spread functions in an eye of an observer generated by the sub-holograms of adjacent object points such that the adjacent point spread functions are mutually incoherent.
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公开(公告)号：US20190271942A1
公开(公告)日：2019-09-05
申请号：US16416414
申请日：2019-05-20
发明人： Gerald FUTTERER
摘要： A holographic display with an illumination device, an enlarging unit and a light modulator. The illumination device includes at least one light source and a light collimation unit, the light collimation unit collimates the light of the at least one light source and generates a light wave field of the light that is emitted by the light source with a specifiable angular spectrum of plane waves, the enlarging unit is disposed downstream of the light collimation unit, seen in the direction of light propagation, where the enlarging unit includes a transmissive volume hologram realising an anamorphic broadening of the light wave field due to a transmissive interaction of the light wave field with the volume hologram, and the light modulator is disposed upstream or downstream of the anamorphic enlarging unit, seen in the direction of light propagation.
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公开(公告)号：US20190121291A1
公开(公告)日：2019-04-25
申请号：US16301839
申请日：2017-05-17
发明人： Norbert LEISTER , Ralf HAUSSLER , Gerald FUTTERER
摘要： The invention relates to a method for generating holograms for encoding in a spatial light modulation device for a holographic display for representing a two- and/or three-dimensional scene. The two- and/or three-dimensional scene is decomposed into object points and encoded in a hologram, which is subdivided into subholograms, in the spatial light modulation device. The object points of the scene are encoded into encoding regions on the spatial light modulation device. A size and/or shape of the encoding region is selected in relation to a size and/or shape of a subhologram, assigned to the encoding region, in such a way that crosstalk of higher diffraction orders in a virtual visibility region is reduced.
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9.发明申请公开(公告)号：US20220326654A1
公开(公告)日：2022-10-13
申请号：US17844404
申请日：2022-06-20
摘要： A three-dimensional light modulator, of which the pixels are combined to form modulation elements. Each modulation element can be coded with a preset discrete value such that three-dimensionally arranged object points can be holographically reconstructed. The light modulator is characterized in that assigned to the pixels of the modulator are beam splitters or beam combiners which, for each modulation element, combine the light wave parts modulated by the pixels by means of refraction or diffraction on the output side to form a common light beam which exits the modulation element in a set propagation direction.
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公开(公告)号：US20220236692A1
公开(公告)日：2022-07-28
申请号：US17717087
申请日：2022-04-10
发明人： Gerald FUTTERER
摘要： An illumination device for illuminating a spatial light modulator device. Sub-holograms are used for encoding a hologram into the spatial light modulator device. The Illumination device includes at least one light source for emitting light for illuminating the spatial light modulator device and a beam shaping unit. The beam shaping unit provides a flat-top plateau-type distribution of an absolute value of a complex degree of mutual coherence of the light in a plane of the spatial light modulator device to be illuminated. The flat-top plateau-type distribution of the absolute value of the complex degree of mutual coherence has a shape that is at least similar to a shape of the largest sub-hologram used for encoding of object points into the spatial light modulator device.
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