中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

116 records (took 0.025 seconds)

    ANALYTIC METHOD FOR COMPUTING VIDEO HOLOGRAMS IN REAL TIME
    41.
    发明申请
    ANALYTIC METHOD FOR COMPUTING VIDEO HOLOGRAMS IN REAL TIME 有权
    实时计算视频HOLOGRAMS的分析方法

    公开(公告)号：US20130250049A1

    公开(公告)日：2013-09-26

    申请号：US13887755

    申请日：2013-05-06

    Applicant: SEEREAL TECHNOLOGIES S.A.

    Inventor： Alexander SCHWERDTNER

    IPC: G03H1/08

    CPC classification number: G03H1/08 ,  G03H1/0808 ,  G03H1/22 ,  G03H1/2294 ,  G03H2001/0833 ,  G03H2210/452

    Abstract: An analytical method for computing a video hologram for a holographic reproduction device having at least one light modulation means is disclosed, wherein a scene split into object points is encoded as a whole hologram and can be seen as a reconstruction from a visibility region, located within a periodicity interval of the reconstruction. The visibility region, together with each object point of the scene to be reconstructed, defines a subhologram and the whole hologram is generated from a superposition of subholograms, wherein the complex hologram values of a subhologram are determined from the wave front of the respective object point to be reconstructed in a modulator region of the light modulation means, by calculating and evaluating the transmission or modulation functions of an imaging element formed in the modulator region. The object point to be reconstructed is located in the focal point of the imaging element.

    Abstract translation: 公开了一种用于计算具有至少一个光调制装置的全息再现装置的视频全息图的分析方法，其中分割成对象点的场景被编码为整个全息图，并且可以被看作是位于内部的可视区域的重建 重建的周期性间隔。 可见度区域与要重建的场景的每个对象点一起定义了一个亚全息图，并且整个全息图是从亚像线叠加产生的，其中从相应对象点的波前确定亚全息图的复数全息图值 通过计算和评估在调制器区域中形成的成像元件的透射或调制功能，在光调制装置的调制器区域中重构。 要重建的对象点位于成像元件的焦点处。

    Light modulation device having high light efficiency
    42.
    发明授权
    Light modulation device having high light efficiency 有权

    公开(公告)号：US12292646B2

    公开(公告)日：2025-05-06

    申请号：US17787495

    申请日：2020-12-17

    Applicant: SEEREAL TECHNOLOGIES S.A.

    Inventor： Norbert Leister ,  Bo Kroll

    IPC: G02F1/1335 ,  G02F1/13363 ,  G02F1/1337 ,  G02F1/1347 ,  G02F1/1362 ,  G03H1/22

    Abstract: The invention relates to a light modulation device having pixels. Essentially, the one half of the pixels are reflective and the other half of the pixels are transmissive. The reflective pixels are arranged in alternation with the transmissive pixels in the same substrate plane. The light modulation device also has a backplane, which has transistors and data lines for conducting signals to the pixels. Each pixel is assigned at least one transistor and at least two data lines. The transistors and the data lines of each adjacent pair of a reflective pixel and a transmissive pixel are arranged under the reflective pixel.

    Method and device for encoding complex-value signals for the reconstruction of three-dimensional objects
    45.
    发明授权
    Method and device for encoding complex-value signals for the reconstruction of three-dimensional objects 有权

    公开(公告)号：US11754972B2

    公开(公告)日：2023-09-12

    申请号：US16071096

    申请日：2017-01-18

    Applicant: SEEREAL TECHNOLOGIES S.A.

    Inventor： Stefan Reichelt ,  Norbert Leister ,  Anne Frauenhofer

    IPC: G03H1/08 ,  G03H1/16 ,  G03H1/32 ,  G06T9/00

    CPC classification number: G03H1/0808 ,  G03H1/16 ,  G03H1/32 ,  G06T9/00 ,  G03H2001/0816

    Abstract: A method for encoding complex-valued signals of a computer-generated hologram into a phase-modulating optical element for the reconstruction of a three-dimensional object, and to a computer program product for encoding complex-valued signals of a computer-generated hologram, and to a holographic display for the reconstruction of a three-dimensional object. The object is to reduce the effort on encoding a complex-valued spatial distribution by an iteration method on the basis of phase encoding, so that the computer-generated hologram resulting therefrom can be represented more rapidly and with the same or an improved reconstruction quality. In particular, the convergence during the iterative optimization is intended to be accelerated. This is achieved by a method in which degrees of freedom of the hologram plane as well as the reconstruction plane are used for optimizing the iteration method for rapid convergence and maximization of the diffraction efficiency in the signal range.

    Beam divergence and various collimators for holographic or stereoscopic displays
    47.
    发明授权
    Beam divergence and various collimators for holographic or stereoscopic displays 有权

    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.

    DISPLAY DEVICE AND METHOD FOR PRODUCING A LARGE FIELD OF VISION
    49.
    发明申请
    DISPLAY DEVICE AND METHOD FOR PRODUCING A LARGE FIELD OF VISION 有权

    公开(公告)号：US20210191123A1

    公开(公告)日：2021-06-24

    申请号：US16757483

    申请日：2018-10-17

    Applicant: SEEREAL TECHNOLOGIES S.A.

    Inventor： Norbert LEISTER ,  Bo KROLL

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

    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.

    HEAD-UP DISPLAY
    50.
    发明申请
    HEAD-UP DISPLAY 有权

    公开(公告)号：US20210165215A1

    公开(公告)日：2021-06-03

    申请号：US16770689

    申请日：2018-12-05

    Applicant: SEEREAL TECHNOLOGIES S.A.

    Inventor： Ralf HAUSSLER

    IPC: G02B27/01

    Abstract: The invention relates to a head-up display device for representing information in a field of view of an observer. The head-up display device comprises at least one projection device, a deflection device which comprises at least one deflection element at which incident light beams are deflected, a sensor device, and a control device. The sensor device is used for detecting data of at least one test beam which is incident on the deflection device. The control device is used for determining at least one aberration caused by the deflection device and for determining at least one correction signal in real time.

Patent Agency Ranking