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    Projection type image display apparatus for improving illumination of a light source
    1.
    发明授权
    Projection type image display apparatus for improving illumination of a light source 有权

    公开(公告)号：US10295895B2

    公开(公告)日：2019-05-21

    申请号：US15770096

    申请日：2015-10-22

    申请人： MAXELL, LTD.

    发明人： Shuichi Sakamoto ,  Kazuo Shikita ,  Hiroyuki Nakamura

    IPC分类号： G03B21/20 ,  G03B21/00 ,  G03B21/14 ,  G02B27/09 ,  G02B27/30

    摘要： The purpose of the present invention is to provide a projection type image display apparatus which is simple in configuration, low in price, and improved in reliability and brightness of an illumination light source. The present invention is a projection type image display apparatus provided with: a lamp; a reflector that reflects a light flux emitted from the lamp; a collimating lens that collimates the light reflected by the reflector; a light modulation device that modulates the collimated light to output the modulated light; and a projection lens that projects the modulated light. The reflector is configured to prevent the lamp from being irradiated with the reflected light of the light flux emitted from the lamp, and the collimating lens is formed of one biconcave lens having concave surfaces on both the incident side and the exit side.

    Vehicular lighting apparatus
    2.
    发明授权
    Vehicular lighting apparatus 有权

    公开(公告)号：US10100995B2

    公开(公告)日：2018-10-16

    申请号：US15501383

    申请日：2014-09-30

    申请人： MAXELL, LTD.

    发明人： Koji Hirata ,  Masahiko Yatsu ,  Hiroyuki Kajikawa ,  Hiroyuki Nakamura

    IPC分类号： F21S41/24 ,  F21S8/10 ,  F21S41/125 ,  F21S41/20 ,  F21S41/13 ,  F21S41/141 ,  G03B21/14 ,  F21Y105/10 ,  F21Y113/13 ,  F21Y115/10 ,  B60Q1/04

    摘要： A vehicular lighting apparatus which is relatively small, lower in cost, and superior in recognizeability of an object illuminated by a head lamp includes a composite lens element that is a light guide element constructed by molding a translucent resin substantially into a plate-like shape; a planar light-emitting unit that emits light; an optical system that transforms planar light from the light-emitting unit into linear light and that causes the linear transformed light to be incident on a rear side face of the light guide element; and a diffraction lens formed on the rear side face of the light guide element on which the linear transformed light is incident, and condensing the linear transformed light. The light condensed by the lens means is emitted from a front side face of the light guide element onto a road surface in front of the vehicle.

    Vehicular lighting apparatus
    9.
    发明授权
    Vehicular lighting apparatus 有权

    公开(公告)号：US10066802B2

    公开(公告)日：2018-09-04

    申请号：US15501349

    申请日：2014-09-30

    申请人： MAXELL, LTD.

    发明人： Koji Hirata ,  Masahiko Yatsu ,  Hiroyuki Kajikawa ,  Hiroyuki Nakamura

    IPC分类号： F21S41/24 ,  F21S8/10 ,  G03B29/00 ,  G03B21/20 ,  F21S41/25 ,  F21S41/141 ,  F21S41/32 ,  F21W101/10 ,  F21Y115/10 ,  F21Y105/10 ,  F21W102/00

    摘要： A vehicular lighting apparatus that is relatively small, low cost, superior in mountability, and offers a superior design. The vehicular lighting apparatus may include a composite lens element that is a light guide element constructed by molding a translucent resin substantially into a plate-like shape; a planar light-emitting unit that emits illumination light; an optical system that transforms planar light from the light-emitting unit into linear light and that causes the linear transformed light to be incident on a rear side face of the light guide element; and a diffraction lens formed on the rear side face of the light guide element on which the linear transformed light is incident, and condensing the linear transformed light. The light condensed by the lens means is emitted from a front side face of the light guide element onto a road surface in front of the vehicle.

    Projection video display device
    10.
    发明授权
    Projection video display device 有权

    公开(公告)号：US10986317B2

    公开(公告)日：2021-04-20

    申请号：US16622376

    申请日：2017-07-12

    申请人： Maxell, Ltd. ,  Hitachi Industry & Control Solutions, Ltd.

    发明人： Hiroyuki Nakamura ,  Kazuo Shikita ,  Satoshi Nakayama ,  Nobutaka Hotta ,  Hiroyuki Shinji

    IPC分类号： H04N9/31 ,  G03B21/14

    摘要： A projection video display device includes a projection video display main body (main body) including a light source and a video display element and generating a video to be projected, a portrait converter that rotates the video generated by the main body around an optical axis by 90°, and a projection lens that magnifies and projects the video rotated by the portrait converter. The main body rotates directions of OSD (On Screen Display) images and in the video generated by the video display element to an opposite direction to or in the same direction as a rotation direction of the video by the portrait converter by 90°. Accordingly, the OSD image can be displayed in a direction in which it is easy for the user to see in portrait projection screens.