公开(公告)号：US20200379272A1

公开(公告)日：2020-12-03

申请号：US16901432

申请日：2020-06-15

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Bo KROLL ,  Norbert LEISTER ,  Gerald FUTTERER ,  Robert MISSBACH ,  Stephan REICHELT

IPC: G02B30/00 ,  G03H1/22 ,  G02F1/1343 ,  G02F1/29 ,  G02F1/1347 ,  G03H1/02

Abstract: 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.

公开(公告)号：US20190278225A1

公开(公告)日：2019-09-12

申请号：US16356084

申请日：2019-03-18

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Gerald FUTTERER ,  Norbert LEISTER ,  Ralf HAUSSLER ,  Grigory LAZAREV

IPC: G03H1/08 ,  G02B27/12 ,  G02B5/32

Abstract: 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.

公开(公告)号：US20160313695A1

公开(公告)日：2016-10-27

申请号：US15191596

申请日：2016-06-24

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Gerald FUTTERER

IPC: G03H1/02 ,  G02F1/1334 ,  F21V8/00 ,  G03H1/22 ,  G02B5/32 ,  G02B27/00

CPC classification number: G03H1/0248 ,  G02B5/32 ,  G02B6/0046 ,  G02B27/0037 ,  G02F1/13342 ,  G02F1/133524 ,  G02F1/133621 ,  G02F1/136277 ,  G02F2201/02 ,  G03H1/0891 ,  G03H1/2205 ,  G03H1/2286 ,  G03H1/2294 ,  G03H1/30 ,  G03H2001/0224 ,  G03H2001/2236 ,  G03H2001/2239 ,  G03H2001/2242 ,  G03H2001/2292 ,  G03H2222/12 ,  G03H2222/22 ,  G03H2222/34 ,  G03H2223/12 ,  G03H2223/14 ,  G03H2223/16 ,  G03H2223/19 ,  G03H2223/22 ,  G03H2223/23 ,  G03H2225/11 ,  G03H2227/03

Abstract: 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.

Abstract translation: 具有照明装置，放大单元和光调制器的全息显示器。 所述照明装置包括至少一个光源和光准直单元，所述光准直单元准直所述至少一个光源的光，并且产生由所述光源发射的具有可指定角频谱的光的光波场 的平面波，放大单元设置在光准直单元的下游，在光传播的方向上看，放大单元包括透射体全息图，其实现由于光的透射相互作用而导致的光波场的变形扩展 具有体积全息图的波场，并且光调制器设置在变形扩大单元的上游或下游，从光传播的方向看。

公开(公告)号：US20160313556A1

公开(公告)日：2016-10-27

申请号：US15199652

申请日：2016-06-30

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Gerald FUTTERER

IPC: G02B27/01 ,  G03H1/26 ,  G02B27/22 ,  G02B27/00 ,  G06T15/50 ,  G02B27/58 ,  G02F1/29 ,  G02B5/32 ,  F21V8/00 ,  H04N13/04 ,  G03H1/22 ,  G02B26/12

Abstract: The invention relates to a display device, in particular a head-mounted display or hocular, having a spatial light modulator and a controllable light-deflecting device for generating a multiple image of the spatial light modulator, which consists of segments, the multiple image being produced at least with a predefinable number of segments which determines the size of a visible area within which a 3D-scene holographically encoded in the spatial light modulator can be reconstructed for observation by an eye of an observer.

公开(公告)号：US20220326654A1

公开(公告)日：2022-10-13

申请号：US17844404

申请日：2022-06-20

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Gerald FUTTERER ,  Norbert LEISTER ,  Ralf HAUSSLER ,  Grigory LAZAREV

IPC: G03H1/08 ,  G02B5/32 ,  G02B27/12

Abstract: 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.

公开(公告)号：US20220236692A1

公开(公告)日：2022-07-28

申请号：US17717087

申请日：2022-04-10

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Gerald FUTTERER

IPC: G03H1/22 ,  G02B5/02 ,  G02B27/09 ,  G03H1/32 ,  G02B5/32 ,  G03H1/04

Abstract: 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.

公开(公告)号：US20210278694A1

公开(公告)日：2021-09-09

申请号：US17315949

申请日：2021-05-10

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Bo KROLL ,  Norbert LEISTER ,  Gerald FUTTERER ,  Robert MISSBACH ,  Stephan REICHELT

IPC: G02B30/00 ,  G02F1/1343 ,  G02F1/1347 ,  G02F1/29 ,  G03H1/02 ,  G03H1/22

Abstract: 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.

公开(公告)号：US20190094803A1

公开(公告)日：2019-03-28

申请号：US16080728

申请日：2017-03-02

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Gerald FUTTERER

IPC: G03H1/22 ,  G02B27/09 ,  G02B5/02 ,  G03H1/04

Abstract: The invention refers to 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 comprises 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.

公开(公告)号：US20190086598A1

公开(公告)日：2019-03-21

申请号：US16085365

申请日：2017-03-16

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Gerald FUTTERER

IPC: G02B5/32 ,  G06F3/01 ,  F21V8/00 ,  G02F1/1335 ,  G02B27/01

CPC classification number: G02B5/32 ,  G02B6/0031 ,  G02B6/0035 ,  G02B6/0063 ,  G02B6/0068 ,  G02B27/0101 ,  G02B27/0103 ,  G02B27/0172 ,  G02B27/48 ,  G02B2027/0107 ,  G02B2027/0125 ,  G02B2027/0174 ,  G02F1/133615 ,  G02F1/133621 ,  G06F3/013

Abstract: The invention refers to an apparatus for generating two-dimensional and/or three-dimensional objects. The apparatus comprises at least one spatial light modulator device for modulating incident light and an optical system. The optical system is designed and arranged such that a segmentation of wave fields is provided in a plane, where the plane in which the segmentation of the wave fields is provided differs with a plane that comprises object points. Adjacent segmented wave fields do have a mutual overlap. The apparatus also comprises a scanning device which couples light waves into a beam expanding waveguide with outcoupling gratings.

公开(公告)号：US20160202593A1

公开(公告)日：2016-07-14

申请号：US15075870

申请日：2016-03-21

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Bo KROLL ,  Gerald FUTTERER ,  Norbert LEISTER ,  Stephan REICHELT ,  Ralf HAUSSLER

IPC: G02F1/29 ,  G02B27/22 ,  G03H1/22 ,  G02B27/00

CPC classification number: 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

Abstract: 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.

Abstract translation: 为了在各种视角下舒适地观看3-D场景，需要具有用于可变观看者距离的较大跟踪范围的显示器。 可控的光影响元件在观察者范围内以粗略的步骤偏转光。 在所述步骤中，光被连续地或具有细微等级的另外可控的光影响元件偏转。 光调制装置适用于全息或自动立体显示器，用于引导要显示的图像信息的可视范围，以便跟随观看者的眼睛。