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1. (WO2015122304) OPTICAL UNIT AND VEHICULAR LIGHTING

Pub. No.:    WO/2015/122304    International Application No.:    PCT/JP2015/052851
Publication Date: Fri Aug 21 01:59:59 CEST 2015 International Filing Date: Tue Feb 03 00:59:59 CET 2015
IPC: F21S 8/12
F21S 8/10
F21Y 101/02
Applicants: KOITO MANUFACTURING CO.,LTD.
株式会社小糸製作所
Inventors: TANAKA, Hidetada
田中 秀忠
NAKAZAWA, Misako
中澤 美紗子
YAMAMURA, Satoshi
山村 聡志
Title: OPTICAL UNIT AND VEHICULAR LIGHTING
Abstract:
The optical unit (120) is provided with a light source (112), a rotating reflector (140) rotating around a rotation axis, and a projection lens (130) having an entrance surface (130b) wherefrom reflected light from the rotating reflector (140) enters. In a circumferential direction to the rotation axis, the rotating reflector (140) has a plurality of blades (142), each having a reflective surface for reflecting light emitted from the light source during a rotation for a predetermined angle to form a desired light distribution pattern. A shade (160) is provided between the projection lens (130) and the rotating reflector (140). Light that enters the projection lens (130) exit surface (130a) with a predetermined angular range and is focused by the projection lens to be directed toward the rotating reflector (140) reflective surface is at least partially blocked by the shade (160).