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    BACKLIGHT UNIT AND HOLOGRAPHIC DISPLAY APPARATUS INCLUDING THE SAME
    11.
    发明申请
    BACKLIGHT UNIT AND HOLOGRAPHIC DISPLAY APPARATUS INCLUDING THE SAME 有权

    公开(公告)号：US20220196900A1

    公开(公告)日：2022-06-23

    申请号：US17693974

    申请日：2022-03-14

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Chilsung CHOI ,  Hoon Song ,  Jungkwuen An ,  Hongseok Lee

    IPC: F21V8/00 ,  G03H1/08 ,  G03H1/22 ,  G02B30/25

    Abstract: A backlight unit may include: a light source providing coherent light; a light guide plate having a light entrance surface on which light from the light source is incident and a light exit surface through which the light is output; a plurality of diffraction gratings (for example, a first input grating, a second input grating, and a third input grating) that are arranged in different regions of the light guide plate to sequentially diffract the light from the light source such that that the beam width of the light may increase as the light propagates in the light guide plate; and a diffraction grating (for example, an output grating) that diffracts and outputs the light having an increased beam width in a direction toward the outside of the light guide plate.

    Backlight unit and holographic display apparatus including the same
    13.
    发明授权
    Backlight unit and holographic display apparatus including the same 有权

    公开(公告)号：US11307343B2

    公开(公告)日：2022-04-19

    申请号：US16675387

    申请日：2019-11-06

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Chilsung Choi ,  Hoon Song ,  Jungkwuen An ,  Hongseok Lee

    IPC: G02B27/00 ,  F21V8/00 ,  G03H1/08 ,  G03H1/22 ,  G02B30/25

    Abstract: A backlight unit may include: a light source providing coherent light; a light guide plate having a light entrance surface on which light from the light source is incident and a light exit surface through which the light is output; a plurality of diffraction gratings (for example, a first input grating, a second input grating, and a third input grating) that are arranged in different regions of the light guide plate to sequentially diffract the light from the light source such that that the beam width of the light may increase as the light propagates in the light guide plate; and a diffraction grating (for example, an output grating) that diffracts and outputs the light having an increased beam width in a direction toward the outside of the light guide plate.

    HOLOGRAPHIC DISPLAY APPARATUS AND OPERATING METHOD THEREOF
    16.
    发明申请
    HOLOGRAPHIC DISPLAY APPARATUS AND OPERATING METHOD THEREOF 有权

    公开(公告)号：US20220066391A1

    公开(公告)日：2022-03-03

    申请号：US17172196

    申请日：2021-02-10

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Geeyoung SUNG ,  Daeho Yang ,  Hongseok Lee

    IPC: G03H1/22 ,  G03H1/08 ,  G02B27/01

    Abstract: A holographic display apparatus and a holographic display method are provided. The holographic display apparatus determines a representative depth from 3D image data; calculates a computer generated hologram (CGH) corresponding to the representative depth on the 3D image data; obtains the modulated CGH by modulating a phase of the CGH to increase an eye box; modulates a light according to the modulated CGH and generates a hologram image; and forms the generated hologram image at the representative depth.

    Optical device with reduced chromatic aberration and display device including the same
    18.
    发明授权
    Optical device with reduced chromatic aberration and display device including the same 有权

    公开(公告)号：US11237316B2

    公开(公告)日：2022-02-01

    申请号：US17034923

    申请日：2020-09-28

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Jong-Young Hong ,  Hoon Song ,  Jungkwuen An ,  Hongseok Lee

    IPC: F21V8/00

    Abstract: An optical device includes a first backlight configured to output first light of a first wavelength through a first output coupler, a first lens disposed to face the first output coupler and having a focal length with respect to the first light, a second backlight including a second output coupler, the second backlight being configured to output second light of a second wavelength through the second output coupler, a second lens disposed to face the second output coupler and having different focal lengths with respect to the first light and the second light, a third backlight including a third output coupler, the third backlight being configured to output third light of a third wavelength through the third output coupler, and a third lens disposed to face the third output coupler and having different focal lengths with respect to the first light, the second light, and the third light.

    Image display device capable of multi-depth expression
    20.
    发明授权
    Image display device capable of multi-depth expression 有权

    公开(公告)号：US11187896B2

    公开(公告)日：2021-11-30

    申请号：US16835763

    申请日：2020-03-31

    Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

    Inventor： Bongsu Shin ,  Jesung Koh ,  Dongjin Kim ,  Geeyoung Sung ,  Hongseok Lee

    IPC: G02B27/00 ,  G02B27/01

    Abstract: An image display device includes a display device configured to modulate light to form an image, a light transmitting unit that transmits the image formed by the display device to eyes of a viewer and includes a focusing member, a driving unit that applies a driving force to a central position of the display device in a direction to change a distance between the display device and the light transmitting unit in the direction, a processor configured to control the display device, a connector disposed between one end of the display device and the processor, the connector connecting the display device to the processor, and a tilt prevention unit that applies an elastic force in the direction to the one end of the display device and to another end of the display device opposite to the one end.

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