公开(公告)号：US11953683B2

公开(公告)日：2024-04-09

申请号：US17027027

申请日：2020-09-21

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Gerald Futterer

IPC: G02B27/14 ,  F21V8/00 ,  G02B5/32 ,  G02B26/12 ,  G02B27/00 ,  G02B27/01 ,  G02B27/58 ,  G02B30/27 ,  G02F1/29 ,  G03H1/22 ,  G03H1/26 ,  G06T15/50 ,  H04N13/344 ,  G03H1/04

CPC classification number: G02B27/0103 ,  G02B5/32 ,  G02B6/0016 ,  G02B26/12 ,  G02B27/0037 ,  G02B27/0172 ,  G02B27/0179 ,  G02B27/58 ,  G02B30/27 ,  G02F1/292 ,  G03H1/2205 ,  G03H1/2294 ,  G03H1/26 ,  G03H1/268 ,  G06T15/50 ,  H04N13/344 ,  G02B2027/0134 ,  G02B2027/0187 ,  G02F1/29 ,  G03H2001/0491 ,  G03H2001/2236 ,  G03H2001/2284 ,  G03H2001/2292 ,  G03H2001/2297 ,  G03H2001/2655 ,  G03H2223/19 ,  G03H2223/21 ,  G03H2225/11 ,  G03H2225/25 ,  G03H2225/33 ,  G03H2225/55 ,  G03H2225/60 ,  G03H2226/05

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：US11340457B2

公开(公告)日：2022-05-24

申请号：US16630648

申请日：2018-07-12

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Norbert Leister ,  Bo Kroll ,  Gerald Futterer

IPC: G02B27/01 ,  G02B5/18 ,  F21V8/00 ,  G02B27/00

Abstract: 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.

公开(公告)号：US11294246B2

公开(公告)日：2022-04-05

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: G02F1/1343 ,  G02F1/1347 ,  G02F1/29 ,  G03H1/02 ,  G03H1/22 ,  G02B30/20 ,  G02B30/00 ,  G02F1/1335 ,  G03H1/26

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：US11002982B2

公开(公告)日：2021-05-11

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: G02B27/22 ,  G02B30/00 ,  G02F1/1343 ,  G02F1/1347 ,  G02F1/29 ,  G03H1/02 ,  G03H1/22 ,  G02F1/1335 ,  G03H1/26

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：US10394189B2

公开(公告)日：2019-08-27

申请号：US15109421

申请日：2015-01-05

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Gerald Futterer

IPC: G03H1/22 ,  G02F1/1335 ,  G02B26/06 ,  G03H1/02 ,  G02B26/08 ,  G03H1/08

Abstract: 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.

公开(公告)号：US11675426B2

公开(公告)日：2023-06-13

申请号：US14361743

申请日：2012-12-03

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Gerald Futterer

IPC: G06F3/01 ,  G02B27/00 ,  G02B30/26 ,  G01S5/16 ,  H04N13/366

CPC classification number: G06F3/013 ,  G02B27/0093 ,  G02B30/26 ,  G01S5/16 ,  H04N13/366

Abstract: The present invention relates to a measurement method in which, by predetermined illumination by means of a display device, in particular a holographic or autostereoscopic display device, with an intensity distribution of the illumination light in a plane of a light source image, a first location of an object, in particular an observer of the display device, is marked, and wherein the relative position of the first location in relation to a second location of the object is determined in a coordinate system of a camera.

公开(公告)号：US11385594B2

公开(公告)日：2022-07-12

申请号：US16416414

申请日：2019-05-20

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Gerald Futterer

IPC: G03H1/02 ,  G03H1/22 ,  G03H1/08 ,  G02B5/32 ,  F21V8/00 ,  G02B27/00 ,  G02F1/1334 ,  G02F1/1335 ,  G03H1/30 ,  G02F1/13357 ,  G02F1/1362

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.

公开(公告)号：US11366426B2

公开(公告)日：2022-06-21

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: G03H1/12 ,  G03H1/08 ,  G02B5/32 ,  G02B27/12 ,  G03H1/02 ,  G02F1/1335 ,  G02F1/13363

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：US10782522B2

公开(公告)日：2020-09-22

申请号：US15199652

申请日：2016-06-30

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Gerald Futterer

IPC: G02B27/14 ,  G02B27/01 ,  H04N13/344 ,  G02B5/32 ,  G03H1/22 ,  G03H1/26 ,  G02B30/27 ,  G06T15/50 ,  F21V8/00 ,  G02B26/12 ,  G02B27/00 ,  G02B27/58 ,  G02F1/29 ,  G03H1/04

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：US10698149B2

公开(公告)日：2020-06-30

申请号：US16085365

申请日：2017-03-16

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Gerald Futterer

IPC: G02B5/32 ,  G02B6/00 ,  G02B27/01 ,  G02F1/13 ,  G09G3/20 ,  F21V8/00 ,  G02B27/48 ,  G02F1/13357 ,  G06F3/01

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.