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    HEAD-UP DISPLAY AND MOBILE BODY EQUIPPED WITH HEAD-UP DISPLAY
    11.
    发明申请
    HEAD-UP DISPLAY AND MOBILE BODY EQUIPPED WITH HEAD-UP DISPLAY 审中-公开

    公开(公告)号：US20200379252A1

    公开(公告)日：2020-12-03

    申请号：US16998378

    申请日：2020-08-20

    Applicant: Panasonic Intellectual Property Management Co., Ltd

    Inventor： Satoshi KUZUHARA ,  Hiroaki OKAYAMA

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

    Abstract: A head-up display of the present disclosure projects a display image on a transparent reflecting member. The head-up display includes: a display device that displays the display image; and a projection optical system that projects the display image displayed on the display device. On an assumption that light reaching a center of a viewpoint region of the observer and corresponding to a center of the virtual image is reference light, the projection optical system includes a prism element that has an incident surface, a reflection surface, and an emitting surface different from the incident surface sequentially in an optical path from the display device. The emitting surface is inclined to the reference light. An inclination amount θ2 of the reference light emitted from the emitting surface with respect to the emitting surface lies in a range of 15°

    HEAD-UP DISPLAY AND VEHICLE
    13.
    发明申请
    HEAD-UP DISPLAY AND VEHICLE 审中-公开

    公开(公告)号：US20170248786A1

    公开(公告)日：2017-08-31

    申请号：US15597804

    申请日：2017-05-17

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Satoshi KUZUHARA ,  Hiroaki OKAYAMA

    IPC: G02B27/01 ,  B60K35/00

    CPC classification number: G02B27/0101 ,  B60K35/00 ,  B60K2370/1529 ,  B60K2370/23 ,  B60K2370/334 ,  B60K2370/347 ,  B60K2370/39 ,  B60K2370/693 ,  G02B27/01 ,  G02B2027/011 ,  G02B2027/0118 ,  G02B2027/013 ,  G06T19/006

    Abstract: A light beam that is emitted from a center of display surface and reaches a center of a viewing area is referred to as reference light beam. An intersection of reference light beam with reflective surface of first reflective element is referred to as reference intersection point. A plane including reference light beam incident on first reflective element and reference light beam reflected by first reflective element is referred to as a reference plane. An intersection line of reflective surface of first reflective element with the reference plane is referred to as reference intersection line. A tangent plane of reflective surface of first reflective element at reference intersection point is referred to as reference tangent plane. Respective heights from two points, vertically upper point and vertically lower point, which are equidistant from reference intersection point on reference tangent plane, to reflective surface of first reflective element are referred to as a sag. When perpendiculars intersect with reference intersection line, a sag at point is greater than a sag at point.

    OPTICAL SYSTEM AND IMAGE DISPLAY DEVICE
    14.
    发明公开
    OPTICAL SYSTEM AND IMAGE DISPLAY DEVICE 审中-公开

    公开(公告)号：US20230408746A1

    公开(公告)日：2023-12-21

    申请号：US18240764

    申请日：2023-08-31

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Satoshi KUZUHARA ,  Kazuhiro MINAMI ,  Hiroaki OKAYAMA

    IPC: F21V8/00 ,  G02B27/00

    CPC classification number: G02B6/0016 ,  G02B27/0075 ,  G02B6/0036 ,  G02B27/0172

    Abstract: An optical system includes: a projection optical system for projecting an image light ray output from a display element and forming an image; and a light guide including an in-coupling region for guiding the ray to an inside of the guide and allowing it to travel in a first axis direction within the guide, and a propagation region for allowing the ray from the in-coupling region to propagate in the direction of the first axis, and allowing part of the ray to travel in a predetermined direction including a directional component of a second axis perpendicular to the first axis. In an optical path of the ray, a distance from the projection optical system to an entrance pupil of the projection optical system relative to the element in a plane perpendicular to the first axis is longer than a distance from the projection optical system to the in-coupling region.

    HEAD-UP DISPLAY AND MOVING BODY WITH HEAD-UP DISPLAY MOUNTED THEREON
    15.
    发明公开
    HEAD-UP DISPLAY AND MOVING BODY WITH HEAD-UP DISPLAY MOUNTED THEREON 审中-公开

    公开(公告)号：US20230161156A1

    公开(公告)日：2023-05-25

    申请号：US18095313

    申请日：2023-01-10

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Satoshi KUZUHARA ,  Hiroaki OKAYAMA

    IPC: G02B27/01 ,  B60R11/02

    CPC classification number: G02B27/0101 ,  B60R11/0229 ,  G02B2027/0187 ,  B60R2300/205 ,  G02B2027/0183 ,  B60R2011/0026

    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
    16.
    发明申请
    HEAD-UP DISPLAY 有权

    公开(公告)号：US20210109348A1

    公开(公告)日：2021-04-15

    申请号：US17128417

    申请日：2020-12-21

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Satoshi KUZUHARA ,  Hiroaki OKAYAMA

    IPC: G02B27/01 ,  G02B13/18 ,  G02B17/08 ,  B60K35/00

    Abstract: A head-up display for displaying an image as a virtual image to an observer includes a projection optical system that includes a lens element and a reflecting mirror. A light beam reaching a center of a viewpoint region of the observer and corresponding to a center of the virtual image is defined as a reference light beam. The lens element is inclined with respect to the reference light beam. The lens element includes an entrance surface on which light of the image is incident, an exit surface from which light of the image emerges, a first edge portion, and a second edge portion. The second edge portion is inclined so that, when light emitted from the image travels through the entrance surface, the second edge portion, and the exit surface in this order, light emerging from the exit surface reaches below a central portion of the reflecting mirror.

    HEAD-UP DISPLAY AND MOBILE BODY EQUIPPED WITH HEAD-UP DISPLAY
    17.
    发明申请
    HEAD-UP DISPLAY AND MOBILE BODY EQUIPPED WITH HEAD-UP DISPLAY 有权

    公开(公告)号：US20210018750A1

    公开(公告)日：2021-01-21

    申请号：US17060706

    申请日：2020-10-01

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Satoshi KUZUHARA ,  Hiroaki OKAYAMA

    IPC: G02B27/01 ,  G02B13/18 ,  G02B17/08 ,  B60K35/00

    Abstract: A head-up display includes a display device and a projection optical system; the projection optical system includes first and second optical elements arranged in order of an optical path from the image; and when optical paths corresponding to an upper end and a lower end of the virtual image are defined as an upper ray and a lower ray, respectively, and a diverging effect and a converging effect are defined as being negative and positive, respectively, the first and the second optical elements satisfy conditional expressions P_u1−P_l1 0 (where P_u1 denotes a local power of the first optical element acting on the upper ray, P_l1 denotes a local power of the first optical element acting on the lower ray, P_u2 denotes a local power of the second optical element acting on the upper ray, P_l2 denotes a local power of the second optical element acting on the lower ray).

    DISPLAY DEVICE
    18.
    发明申请
    DISPLAY DEVICE 审中-公开

    公开(公告)号：US20200004015A1

    公开(公告)日：2020-01-02

    申请号：US16570203

    申请日：2019-09-13

    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

    Inventor： Ken'ichi KASAZUMI ,  Toshiya MORI ,  Hiroaki OKAYAMA ,  Satoshi KUZUHARA ,  Hiroyuki FURUYA ,  Hiroshi GOTOU ,  Akira KUROZUKA

    IPC: G02B27/01 ,  B60K35/00 ,  G02B26/10

    Abstract: A display device is provided and may include a light source that emits a light beam, a scanner that causes the light beam to scan, a movable screen in which an image is formed by transmitting the light beam from scanner, an optical system configured to project the image on a display medium, and a driver configured to cause the movable screen to reciprocate in moving directions. The image includes a first image and a second image. The movable screen reciprocates in a posture inclined with respect to the moving directions such that a second end of the movable screen is positioned closer to the scanner than a first end of the movable screen. The scanner forms the second image in the movable screen while the movable screen moves such that a forming direction of the second image is inclined with respect to a direction approaching the scanner.

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