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：US10146180B2

公开(公告)日：2018-12-04

申请号：US14755781

申请日：2015-06-30

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Norbert Leister ,  Gerald Fuetterer ,  Bo Kroll ,  Hagen Stolle

IPC: G03H1/00 ,  G03H1/22 ,  G02B5/32 ,  G02B26/08 ,  G03H1/08 ,  G03H1/32 ,  H04N9/31 ,  G03B21/00 ,  H04N13/04

Abstract: A projection device is provided for displaying at least one of a two-dimensional and three-dimensional scene or of content. The projection device comprises an illumination device, at least two spatial light modulator devices and an optical system. The illumination device comprises at least one light source for generating a holographic illumination. One of said spatial light modulator devices is designed as spatial light modulator device modulating at least the phase of the light for the holographical generation of illumination patterns. This spatial light modulator device as first spatial light modulator device is followed by a second spatial light modulator device. The optical system is disposed to illuminate the second spatial light modulator device with a predefinable light distribution generated by the first spatial light modulator device.

公开(公告)号：US11835721B2

公开(公告)日：2023-12-05

申请号：US16757483

申请日：2018-10-17

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Norbert Leister ,  Bo Kroll

IPC: G03H1/00 ,  G02B27/01 ,  H04N13/383 ,  H04N13/339 ,  G02B27/00

CPC classification number: G02B27/0172 ,  G02B27/0093 ,  H04N13/339 ,  H04N13/383 ,  G02B2027/0109 ,  G02B2027/0145 ,  G02B2027/0147 ,  G02B2027/0174

Abstract: The invention relates to a display device for representing two-dimensional and/or three-dimensional objects or scenes. The display device comprises at least one illumination device for emitting sufficiently coherent light, at least one spatial light modulation device for modulating incident light, and at least one optical system. The at least one optical system is provided for multiple imaging of the at least one spatial light modulation device and for generating virtual viewing windows in accordance with the number of images of the at least one spatial light modulation device. The individual images of the at least one spatial light modulation device are combined with one another as segments and form a field of view. The field of view comprises at least one high-resolution holographic segment and at least one low-resolution holographic segment.

公开(公告)号：US10761481B2

公开(公告)日：2020-09-01

申请号：US15928891

申请日：2018-03-22

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Bo Kroll ,  Robert Missbach ,  Alexander Schwerdtner

IPC: G03H1/04 ,  G03H1/02 ,  G03H1/22 ,  G09G3/20 ,  G03H1/08 ,  G03H1/26 ,  G06F3/01 ,  G02B26/08 ,  G03H1/00 ,  G03H1/32

Abstract: Disclosed is a holographic display including a spatial light modulator (SLM) with pixels, the SLM pixels being on a substrate, the SLM including circuitry which is on the same substrate as the SLM pixels, the circuitry operable to perform calculations which provide an encoding of the SLM.