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    Beam deflector and three-dimensional display device including the same
    21.
    发明授权
    Beam deflector and three-dimensional display device including the same 有权

    公开(公告)号：US10962796B2

    公开(公告)日：2021-03-30

    申请号：US16206555

    申请日：2018-11-30

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Hoon Song ,  Jungkwuen An ,  Young Kim ,  Kanghee Won

    IPC: G02B30/26 ,  G02F1/29 ,  G02B30/34 ,  G02B27/00

    Abstract: A beam deflector and a three-dimensional (3D) display device including the beam deflector are provided. The beam deflector includes a first deflector configured to controllably deflect incident light having a first polarization state in a first horizontal direction; a half-wave plate configured to rotate a polarization of light transmitted by the first deflector by 90°; and a second deflector configured to controllably deflect light transmitted by the half-wave plate having the first polarization state in a second horizontal direction that is different from the first horizontal direction.

    Beam modulator and display apparatus using the same
    23.
    发明授权
    Beam modulator and display apparatus using the same 有权

    公开(公告)号：US10274755B2

    公开(公告)日：2019-04-30

    申请号：US15102400

    申请日：2014-12-10

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Seunghoon Han ,  Kanghee Won ,  Hongseok Lee ,  Jaeeun Jung

    IPC: G02B5/30 ,  G02F1/01 ,  G02F1/29 ,  G03H1/02 ,  G03H1/08 ,  G03H1/22 ,  G02B27/22 ,  G02B27/28 ,  G02F1/1335 ,  G02F1/1347 ,  G02F1/13363

    Abstract: Disclosed are a beam combining/splitting modulator, a display apparatus including the same, and a spatial light modulation method. The beam combining/splitting modulator includes a light modulator including first and second modulation regions for modulating light, a polarization converter disposed at a side of an emitting surface of the light modulator and including a first transmissive region for polarizing and converting light incident from the first modulation region to have a first polarization and a second transmissive region for polarizing and converting light incident from the second modulation region to have a second polarization, a birefringence modulator disposed at the side of an emitting surface of the polarization converter and switching between a first state in which birefringence occurs and a second state in which birefringence does not occur, and a polarizer disposed at the side of an emitting surface of the birefringence modulator.

    Holographic display device having reduced chromatic aberration
    25.
    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
    26.
    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.

    GEOMETRIC PHASE OPTICAL ELEMENT AND THREE-DIMENSIONAL DISPLAY APPARATUS INCLUDING THE SAME
    29.
    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.

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