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    Interocular distance measurement method and correction method
    1.
    发明授权
    Interocular distance measurement method and correction method 有权

    公开(公告)号：US12192436B2

    公开(公告)日：2025-01-07

    申请号：US17922076

    申请日：2021-04-15

    Applicant: KYOCERA CORPORATION

    Inventor： Kaoru Kusafuka

    IPC: H04N13/366 ,  G02B27/01 ,  G02B30/32 ,  G06T7/70 ,  H04N13/31 ,  H04N13/327 ,  H04N13/363

    Abstract: An interocular distance measurement method is implementable by a three-dimensional display device including a display, a barrier, a detector, and a controller. The display displays a parallax image. The barrier provides parallax between eyes of a user. The detector detects a position of a face of the user. The method includes displaying an image, detecting a first position, detecting a second position, and calculating an interocular distance. The displaying an image includes displaying an image for interocular distance measurement. The detecting a first position includes detecting a first position of the face of the user in response to an instruction from the user. The detecting a second position includes detecting a second position of the face of the user in response to an instruction from the user. The calculating an interocular distance includes calculating an interocular distance of the user based on the first and the second positions.

    Three-dimensional display apparatus, head-up display system, and mobile body
    5.
    发明授权
    Three-dimensional display apparatus, head-up display system, and mobile body 有权

    公开(公告)号：US10921588B2

    公开(公告)日：2021-02-16

    申请号：US16620411

    申请日：2018-05-29

    Applicant: KYOCERA Corporation

    Inventor： Kaoru Kusafuka

    IPC: G02B30/30 ,  G02B27/01

    Abstract: A three-dimensional display apparatus includes a display panel and an optical element. The display panel includes a display surface. The display surface extends in a first direction, extends in a second direction orthogonal to the first direction. The first direction corresponds to a parallax direction of user's eyes seeing an image. The display surface curves around a central axis extending in the second direction. The display surface includes subpixels arranged in a grid pattern in the first direction and the second direction within the display surface. The optical element is arranged along the display surface, and the optical element includes strip-shaped regions, each of which extends in a certain direction. The optical element is configured to define a beam direction of image light emitted from the subpixels. The display surface forms an arc in a cross-section that is orthogonal to the second direction. A position of an eye box, in the first direction, is set to a position within a distance r sin θ from the center of the arc. The r represents a diameter of the arc. The θ represents an angle formed by a linear line connecting between a first direction edge of the display panel and a center of the arc and a linear line connecting between a first direction center of the display panel and the center of the arc viewed in the second direction. The eye box is an acceptable range of a position of the user's eyes when the user sees the image.

    Vehicular head-up display apparatus having first and second luminance areas
    6.
    发明授权
    Vehicular head-up display apparatus having first and second luminance areas 有权

    公开(公告)号：US10453426B2

    公开(公告)日：2019-10-22

    申请号：US16064357

    申请日：2016-12-21

    Applicant: KYOCERA Corporation

    Inventor： Satoshi Kawaji ,  Yusuke Hayashi ,  Kaoru Kusafuka

    IPC: G09G5/14 ,  B60K35/00 ,  G02B27/01 ,  G09G5/02 ,  G09G3/00 ,  G09G5/37

    Abstract: A vehicular head-up display apparatus comprises a light source apparatus, a display panel, an optical member, and a controller. The display panel is configured to change illumination light from the light source apparatus into display light on a display surface. The optical member is configured to guide the display light from the display panel to a certain space. The display surface includes a first luminance area displayable at a first luminance, and a second luminance area displayable at a second luminance which is lower in luminance than the first luminance. The controller is configured to selectively display information in the first luminance area and the second luminance.

    Display device, head-up display, and moving body
    10.
    发明授权
    Display device, head-up display, and moving body 有权

    公开(公告)号：US11543714B2

    公开(公告)日：2023-01-03

    申请号：US17261718

    申请日：2019-07-26

    Applicant: KYOCERA Corporation

    Inventor： Kaoru Kusafuka ,  Mitsuhiro Murata

    IPC: G02F1/1347 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1345 ,  G02F1/1362

    Abstract: A display device includes: a first panel including a first image-forming surface for forming a first image visually recognized by a user and a plurality of first pixels; a second panel including a second image-forming surface for forming a second image visually recognized by the user and a plurality of second pixels; and a half-wavelength plate located between the first image-forming surface and the second image-forming surface. The half-wavelength plate includes an optical axis, is configured to be capable of transmitting incident light from either one panel of the first panel and the second panel, and of emitting light as emission light to the other panel. A polarization direction of the emission light from the half-wavelength plate is determined based on a polarization direction of the incident light on the half-wavelength plate and a direction of the optical axis.

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