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    HEAD-UP DISPLAY AND MOVING BODY WITH HEAD-UP DISPLAY MOUNTED THEREON
    2.
    发明申请
    HEAD-UP DISPLAY AND MOVING BODY WITH HEAD-UP DISPLAY MOUNTED THEREON 审中-公开

    公开(公告)号：US20200301141A1

    公开(公告)日：2020-09-24

    申请号：US16892397

    申请日：2020-06-04

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： SATOSHI KUZUHARA ,  HIROAKI OKAYAMA

    IPC: G02B27/01 ,  B60R11/02

    Abstract: A head-up display is configured to project an image on a transparent reflection member to cause an observer to visually recognize a virtual image, and includes a display device configured to display the image, and a projection optical system configured to project the image displayed by the display device as the virtual image for the observer. The projection optical system is configured to form an image as an intermediate image, and includes a first lens configured to condense light, and a first optical element configured to diffuse light. The first lens and the first optical element are disposed in this order along an optical path from the display device. The first lens is inclined with respect to a reference beam which is defined as a beam reaching a center of a viewpoint region of the observer and corresponding to a center of the virtual image.

    HEAD-UP DISPLAY AND MOVING BODY EQUIPPED WITH HEAD-UP DISPLAY
    5.
    发明申请
    HEAD-UP DISPLAY AND MOVING BODY EQUIPPED WITH HEAD-UP DISPLAY 审中-公开

    公开(公告)号：US20180045958A1

    公开(公告)日：2018-02-15

    申请号：US15797143

    申请日：2017-10-30

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： SATOSHI KUZUHARA ,  HIROAKI OKAYAMA

    IPC: G02B27/01 ,  G03B21/14 ,  B60K35/00 ,  G03B21/28

    Abstract: A head-up display projects an image on a transparent reflective member to allow an observer to visually recognize a virtual image. The head-up display includes a display device and a projection optical system. The projection optical system includes a refractive optical system and a concave mirror. The display device displays the image. The projection optical system projects the image displayed on the display device to a visual point of an observer. The refractive optical system includes at least one optical element. The concave mirror has a concave reflection surface. The refractive optical system is positioned on an optical path between the display device and the concave mirror. In the refractive optical system, an incident surface of a lens element having negative power into which light of the image displayed on the display device is incident is concave.

    HEAD-UP DISPLAY
    7.
    发明申请
    HEAD-UP DISPLAY 审中-公开

    公开(公告)号：US20180314064A1

    公开(公告)日：2018-11-01

    申请号：US16026109

    申请日：2018-07-03

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： KEN'ICHI KASAZUMI ,  TOSHIYA MORI ,  HIROAKI OKAYAMA ,  SATOSHI KUZUHARA ,  YOSUKE ASAI

    IPC: G02B27/01 ,  G02B3/08 ,  B60K35/00

    CPC classification number: B60K35/00 ,  G02B3/08 ,  G02B27/01

    Abstract: A head-up display includes an optical system that radiates light forming a projected image toward an eye box. The eye box is a predetermined range in which eyes of an observer are assumed to be present. The optical system includes a Fresnel lens having a bumpy surface having a sawtooth-shaped cross-section. The bumpy surface is formed concentrically around an optical axis, and formed by alternately disposing first surfaces as light condensing surfaces that allow incident light to converge toward a focal point, and second surfaces as wall surfaces that do not allow the incident light to converge toward the focal point. The second surfaces are inclined with respect to the optical axis of the Fresnel lens at an angle to reflect the incident light striking the wall surfaces, in a direction toward outside of a range of the eye box.

    DISPLAY DEVICE, DISPLAY METHOD AND DISPLAY MEDIUM
    8.
    发明申请
    DISPLAY DEVICE, DISPLAY METHOD AND DISPLAY MEDIUM 审中-公开

    公开(公告)号：US20180188530A1

    公开(公告)日：2018-07-05

    申请号：US15738645

    申请日：2016-06-13

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： KEN'ICHI KASAZUMI ,  TOSHIYA MORI ,  HIROAKI OKAYAMA ,  SATOSHI KUZUHARA

    IPC: G02B27/01 ,  G02B27/00 ,  G09G3/00

    Abstract: To provide a display device that can suppress generation of a double image. Display device includes plate-shape windshield having translucency and a projection unit that projects light expressing an image onto windshield such that the light is reflected toward a user by windshield. The projection unit changes a display distance between an eye of the user and a position of an image visually recognized as a virtual image by the user through windshield by the light projection. Windshield is formed such that a wedge angle that is of an angle formed between a front side and a back side at a region located at any level of windshield is continuously decreased with increasing level.

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