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公开(公告)号：US20230139776A1
公开(公告)日：2023-05-04
申请号：US17974878
申请日：2022-10-27
发明人： Toshiaki MORI , Yoichi MATSUOKA , Koichiro ENDO
摘要： A light guide includes a rod-shaped first light guide portion including a prism surface including a prism to reflect internally propagating light and output the light to an outside along a lengthwise direction thereof, a rod-shaped second light guide portion including a light intake portion to take in light from a light source, and a rod-shaped intermediate light guide portion between the first light guide portion and the second light guide portion provided such that side surfaces thereof are connected to side surfaces of the first light guide portion and the second light guide portion. A thickness of the intermediate light guide portion is smaller than a thickness of the first light guide portion and a thickness of the second light guide portion. A side surface of the intermediate light guide portion on a side of the prism surface is continuous with the prism surface in a same plane.
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公开(公告)号：US20170276323A1
公开(公告)日：2017-09-28
申请号：US15433860
申请日：2017-02-15
发明人： Yukihiko UMEDA , Koichiro ENDO
CPC分类号： F21V13/04 , F21V5/04 , F21V7/0025 , F21V7/0066 , F21V7/04 , F21V15/01 , F21V21/08 , F21Y2115/10
摘要： An illuminating device includes a light source having a light-source optical axis, a lens that is located substantially parallel to the light-source optical axis such that a surface of the lens faces the light-source optical axis, the lens extending to a position rearward of the light source in a direction of the light-source optical axis, and a light reflecting portion located so as to be opposed to a front side of the light source, the light reflecting portion being adapted to reflect emitted light of the light source obliquely rearward of the light source, and reflect the emitted light toward the lens.
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