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    APPARATUS AND METHOD FOR COMPUTING HOLOGRAM DATA
    2.
    发明公开
    APPARATUS AND METHOD FOR COMPUTING HOLOGRAM DATA 审中-公开

    公开(公告)号：US20230315014A1

    公开(公告)日：2023-10-05

    申请号：US18020791

    申请日：2021-08-06

    申请人： SEEREAL TECHNOLOGIES S.A.

    发明人： Enrico ZSCHAU ,  Johannes PLEIKIES ,  Robert MISSBACH

    IPC分类号： G03H1/22 ,  G03H1/08

    CPC分类号： G03H1/2294 ,  G03H1/0891 ,  G03H2226/05 ,  G03H2226/02

    摘要： The invention relates to a preprocessing circuit for at least one hologram computation circuit that comprises an input interface device for receiving data of a scene to be displayed, a processing device for defined processing of the received data and for converting the data into a system-independent format with incorporation of specific parameters required for displaying the scene, and an output interface device for outputting and transmitting the converted data to at least one hologram computation circuit. An apparatus for computing a hologram for displaying a scene by means of a holographic display apparatus is also disclosed. The apparatus comprises at least one spatial light modulation device and a preprocessing circuit as described, and at least one hologram computation circuit for computing a hologram and for encoding the hologram for the at least one spatial light modulation device.

    METHOD FOR GENERATING A HEAD UP DISPLAY FOR AN AIRCRAFT USING VIDEO HOLOGRAMS IN REAL TIME WITH THE HELP OF SUB-HOLOGRAMS
    4.
    发明申请
    METHOD FOR GENERATING A HEAD UP DISPLAY FOR AN AIRCRAFT USING VIDEO HOLOGRAMS IN REAL TIME WITH THE HELP OF SUB-HOLOGRAMS 有权

    公开(公告)号：US20230025687A1

    公开(公告)日：2023-01-26

    申请号：US17957118

    申请日：2022-09-30

    申请人： SEEREAL TECHNOLOGIES S.A.

    发明人： Enrico ZSCHAU ,  Armin SCHWERDTNER ,  Bo KROLL ,  Alexander SCHWERDTNER

    IPC分类号： G03H1/22 ,  G03H1/08

    摘要： A method for generating video holograms in real time for a holographic playback device comprising at least one light modulator means, into which a scene divided into object points is encoded as an entire hologram and can be seen as a reconstruction from a visibility region, which is located within a periodicity interval of the reconstruction of the video hologram, the visibility region defining a subhologram together with each object point of the scene to be reconstructed, and the entire hologram being generated from a superposition of contributions of subholograms, is characterized in that for each object point the contributions of the subholograms in the entire reconstruction of the scene can be determined from at least one look-up table.

    DISPLAY APPARATUS WITH A REDUCED POWER CONSUMPTION
    5.
    发明申请
    DISPLAY APPARATUS WITH A REDUCED POWER CONSUMPTION 有权

    公开(公告)号：US20220247982A1

    公开(公告)日：2022-08-04

    申请号：US17595402

    申请日：2020-05-14

    申请人： SEEREAL TECHNOLOGIES S.A.

    发明人： Bo KROLL ,  Norbert LEISTER ,  Jacob FUGAL ,  Robert MISSBACH

    IPC分类号： H04N9/31

    摘要： The invention relates to a display apparatus which comprises an illumination device for emitting light, a spatial light modulation device for modulating incident light, an optical system and a control device. The optical system is provided for generating at least one image of the spatial light modulation device as a segment, where the optical system further comprises a deflection device for directing the image of the spatial light modulation device to a defined position in the field of view of a user. The control device is coupled to the illumination device and the deflection device and embodied to switch the illumination device on the basis of a control of the deflection device.

    LIGHT MODULATION DEVICE FOR A DISPLAY FOR REPRESENTING TWO- AND/OR THREE-DIMENSIONAL IMAGE CONTENT
    6.
    发明申请
    LIGHT MODULATION DEVICE FOR A DISPLAY FOR REPRESENTING TWO- AND/OR THREE-DIMENSIONAL IMAGE CONTENT 有权

    公开(公告)号：US20220229335A1

    公开(公告)日：2022-07-21

    申请号：US17711207

    申请日：2022-04-01

    申请人： SEEREAL TECHNOLOGIES S.A.

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

    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.

    Display device for enlarging the field of view
    7.
    发明授权
    Display device for enlarging the field of view 有权

    公开(公告)号：US11340457B2

    公开(公告)日：2022-05-24

    申请号：US16630648

    申请日：2018-07-12

    申请人： SEEREAL TECHNOLOGIES S.A.

    发明人： Norbert Leister ,  Bo Kroll ,  Gerald Futterer

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

    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.

    DISPLAY DEVICE AND METHOD FOR OPTIMIZING THE IMAGE QUALITY
    9.
    发明申请
    DISPLAY DEVICE AND METHOD FOR OPTIMIZING THE IMAGE QUALITY 有权

    公开(公告)号：US20210223738A1

    公开(公告)日：2021-07-22

    申请号：US16066803

    申请日：2016-12-23

    申请人： SEEREAL TECHNOLOGIES S.A.

    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.