Near-eye display devices
    3.
    发明授权

    公开(公告)号:US11988845B2

    公开(公告)日:2024-05-21

    申请号:US17183486

    申请日:2021-02-24

    CPC classification number: G02B27/0961 G02B27/0172 G02B2027/011

    Abstract: A near-eye display device, comprising: a pixel island assembly, comprising a plurality of light-emitting elements; and a microlens array assembly, comprising a microlens array and an optical surface member, the optical surface member having an optically transmissive free-form surface, a planar total-reflection surface and an optically reflective free-form surface, each surface of which intersects with other two surfaces; wherein light emitted by the pixel island assembly enters the optical surface member through the optically transmissive free-form surface, is reflected by the planar total-reflection surface and by the optically reflective free-form surface in sequence, and then exits the optical surface member through the microlens array.

    Display device and method for controlling display device

    公开(公告)号:US11156890B2

    公开(公告)日:2021-10-26

    申请号:US16642629

    申请日:2019-03-29

    Abstract: A display device and a method for controlling the display device are disclosed. The display device includes a backlight module and a liquid crystal cell on a light emitting side of the backlight module. The liquid crystal cell includes a first electrode, a second electrode disposed in a first direction opposite to the first electrode, a liquid crystal layer between the first electrode and the second electrode, and a diffractive optical element in the liquid crystal layer. A refractive index of the diffractive optical element is equal to a short-axis refractive index of a liquid crystal in the liquid crystal layer. The liquid crystal cell is divided into a first portion where the liquid crystal molecules are capable of rotating in a first plane and a second portion in a second direction perpendicular to the first direction where liquid crystal molecules are capable of rotating in a first plane.

    Display device
    6.
    发明授权

    公开(公告)号:US11640020B2

    公开(公告)日:2023-05-02

    申请号:US16765583

    申请日:2019-04-22

    Abstract: A display device is disclosed, and the display device includes a display layer and a lens layer; the lens layer is provided on a light emergent side of the display layer, and includes at least one grating compound lens unit; the display layer includes at least one display pixel set, and the display pixel set is configured to emit light for imaging toward the grating compound lens unit during display; the grating compound lens unit is configured to optically image the display pixel set; and the grating compound lens unit is further configured to deflect the light for imaging, to make an image-space central visual field direction of the grating compound lens unit intersect with an extension direction of an optical axis of the grating compound lens unit, so that the display device has one or more viewpoints.

    Transparent display substrate and transparent display device

    公开(公告)号:US11537004B2

    公开(公告)日:2022-12-27

    申请号:US17423008

    申请日:2020-06-08

    Abstract: A transparent displaying base plate and a transparent displaying device. The transparent displaying base plate includes a displaying layer (2) and a liquid-crystal grating layer (3) provided on one side of the displaying layer (2), the displaying layer (2) includes black matrixes (15) and displaying regions (A) defined by the black matrixes (15), the liquid-crystal grating layer (3) is provided with a backlight unit on one side that is further away from the displaying layer (2), and the backlight unit includes a backlight layer for exiting backlight light rays to the displaying layer (2), and at least a light focusing layer for focusing the backlight light rays directly facing the positions of the displaying regions (A) to the black matrixes (15).

    LED backlight structure and manufacturing method thereof

    公开(公告)号:US11262618B1

    公开(公告)日:2022-03-01

    申请号:US17212832

    申请日:2021-03-25

    Abstract: The present disclosure relates to an LED backlight structure having a backlight side and a light outgoing side opposite to each other, including: an LED array on a transparent substrate; a transparent encapsulation layer on a side of the transparent substrate with the LED array, and configured to encapsulate the LED array; wherein the LED array is configured to emit light, the LED backlight structure further includes: a reflection layer on a backlight side of the transparent substrate and configured to reflect light to the light outgoing side; and a first microstructure layer on the light outgoing side of the transparent substrate and the LED array, wherein the first microstructure layer is configured to scatter light incident on a surface of the first microstructure layer, so that a part of light passes through the first microstructure layer, and the rest of light is reflected by the first microstructure layer.

    Color dispersion apparatus and spectrometer

    公开(公告)号:US11256012B2

    公开(公告)日:2022-02-22

    申请号:US16483910

    申请日:2019-02-27

    Abstract: The present disclosure relates to a dispersion apparatus. The dispersion apparatus may include an optical substrate; a grating layer on a first side of the optical substrate; and a light outlet layer on a second side of the optical substrate, the second side opposite the first side of the optical substrate. The grating layer is configured to perform dispersion of incident light into first-order diffracted beams having target wavelengths and transmit the first-order diffracted beams into the optical substrate, and wherein a diffraction angle of each of the first-order diffracted beams having the target wavelengths is smaller than a total reflection angle between the optical substrate and air. The light outlet layer is configured to extract the first-order diffracted beams having the target wavelengths in the optical substrate.

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