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    Holographic display device having reduced chromatic aberration
    2.
    发明授权
    Holographic display device having reduced chromatic aberration 有权

    公开(公告)号：US11774752B2

    公开(公告)日：2023-10-03

    申请号：US17107290

    申请日：2020-11-30

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Hoon Song ,  Hongseok Lee ,  Young Kim ,  Jungkwuen An ,  Kanghee Won ,  Chilsung Choi

    IPC: G02B27/00 ,  G03H1/22

    CPC classification number: G02B27/0068 ,  G03H1/2286 ,  G03H2001/221 ,  G03H2001/2234 ,  G03H2222/18

    Abstract: A holographic display device includes a light source configured to emit light, the light including first light of a first wavelength, second light of a second wavelength, and third light of a third wavelength; a spatial light modulator configured to form a holographic pattern to modulate the light emitted from the light source and to produce a holographic image; and a focusing optical system configured to focus the holographic image. The focusing optical system includes a fixed-focus optical system having a fixed focal length, and a variable focus optical system having a focal length that is changed by electrical control. The fixed-focus optical system is configured to focus the first light of the first wavelength, the second light of the second wavelength, and the third light of the third wavelength on different positions, respectively, on an optical axis to cancel a chromatic aberration by the variable focus optical system.

    Geometric phase optical element and three-dimensional display apparatus including the same
    3.
    发明授权
    Geometric phase optical element and three-dimensional display apparatus including the same 有权

    公开(公告)号：US11635633B2

    公开(公告)日：2023-04-25

    申请号：US17036837

    申请日：2020-09-29

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Young Kim ,  Soonbum Kwon ,  Byonggwon Song ,  Jungkwuen An ,  Kanghee Won ,  Hongseok Lee ,  Jong-Young Hong

    IPC: G02B30/25 ,  G02F1/13 ,  G02F1/1335

    Abstract: A geometric phase optical element and a three-dimensional display apparatus including the same are provided. The geometric phase optical element includes: a liquid crystal layer; a first electrode on a surface of the liquid crystal layer; and a second electrode on another surface of the liquid crystal layer, wherein, when no voltage is applied to the first and second electrodes, the liquid crystal layer is configured such that a phase difference according to an arrangement of the liquid crystal is π and light transmitted through the liquid crystal layer is diffracted by a first deflection angle, and when a first voltage that causes the phase difference according to the arrangement of the liquid crystal to become π/2 is applied to the first and second electrodes, the liquid crystal layer is configured such that the light transmitted through the liquid crystal layer is diffracted by a second deflection angle.

    HOLOGRAPHIC DISPLAY DEVICE
    5.
    发明申请
    HOLOGRAPHIC DISPLAY DEVICE 有权

    公开(公告)号：US20220308526A1

    公开(公告)日：2022-09-29

    申请号：US17502316

    申请日：2021-10-15

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Hyeonseung Yu ,  Hoon Song ,  Jungkwuen An ,  Hongseok Lee

    IPC: G03H1/22

    Abstract: A holographic display device is provided. The holographic display device includes a spatial light modulator for representing a partial complex domain and reproducing a hologram by diffracting light, and a processor for controlling the spatial light modulator. The processor controls the spatial light modulator by employing an algorithm for calculating hologram information according to the representation of the partial complex domain of the spatial light modulator.

    GEOMETRIC PHASE OPTICAL ELEMENT AND THREE-DIMENSIONAL DISPLAY APPARATUS INCLUDING THE SAME
    6.
    发明申请
    GEOMETRIC PHASE OPTICAL ELEMENT AND THREE-DIMENSIONAL DISPLAY APPARATUS INCLUDING THE SAME 有权

    公开(公告)号：US20210302757A1

    公开(公告)日：2021-09-30

    申请号：US17036837

    申请日：2020-09-29

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Young Kim ,  Soonbum Kwon ,  Byonggwon Song ,  Jungkwuen An ,  Kanghee Won ,  Hongseok Lee ,  Jong-Young Hong

    IPC: G02B30/25 ,  G02F1/1335

    Abstract: A geometric phase optical element and a three-dimensional display apparatus including the same are provided. The geometric phase optical element includes: a liquid crystal layer; a first electrode on a surface of the liquid crystal layer; and a second electrode on another surface of the liquid crystal layer, wherein, when no voltage is applied to the first and second electrodes, the liquid crystal layer is configured such that a phase difference according to an arrangement of the liquid crystal is π and light transmitted through the liquid crystal layer is diffracted by a first deflection angle, and when a first voltage that causes the phase difference according to the arrangement of the liquid crystal to become π/2 is applied to the first and second electrodes, the liquid crystal layer is configured such that the light transmitted through the liquid crystal layer is diffracted by a second deflection angle.

    Method and apparatus for processing holographic image
    9.
    发明授权
    Method and apparatus for processing holographic image 有权

    公开(公告)号：US10775742B2

    公开(公告)日：2020-09-15

    申请号：US15271351

    申请日：2016-09-21

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Juwon Seo ,  Wontaek Seo ,  Hoon Song ,  Jungkwuen An ,  Hongseok Lee

    IPC: G03H1/08 ,  G03H1/26 ,  G03H1/22 ,  G06K9/00 ,  G06F3/01

    Abstract: An apparatus and method for processing a holographic image. The apparatus calculates a first calculation result with respect to an image for the left eye and a first calculation result with respect to an image for the right eye and stores the results at different memory addresses of a storage. Thereafter, the apparatus calculates values of a waveform of light to be modulated by a spatial light modulator by performing a second calculation that uses all of the first calculation results stored in the storage. An image window of the image for the left eye and an image window of the image for the right eye are spatially separated from each other by the apparatus in a viewing window of a hologram image reproduced via the spatial light modulator.

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