Invention Grant
- Patent Title: Vehicle headlamp
- Patent Title (中): 车头灯
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Application No.: US11881427Application Date: 2007-07-27
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Publication No.: US07690818B2Publication Date: 2010-04-06
- Inventor: Kenichi Takada , Yusuke Nakada , Masashi Tatsukawa
- Applicant: Kenichi Takada , Yusuke Nakada , Masashi Tatsukawa
- Applicant Address: JP Tokyo
- Assignee: Koito Manufacturing Co., Ltd.
- Current Assignee: Koito Manufacturing Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Osha • Liang LLP
- Priority: JP2006-207656 20060731
- Main IPC: F21V7/06
- IPC: F21V7/06

Abstract:
A vehicle headlamp includes a projection lens through which an optical axis passes. The optical axis extends in a front-and-rear direction of a vehicle. The vehicle headlamp includes a light source disposed on a rear side of a rear focal point of the projection lens; a reflector which reflects a direct light from the light source toward a front direction so as to become close to the optical axis; a shade disposed between the projection lens and the light source and having an edge portion positioned near the rear focal point of the projection lens; and an auxiliary reflector disposed between the projection lens and a shade. The auxiliary reflector reflects a part of the light reflected by the reflector toward the projection lens such that an upward irradiation light is irradiated from the projection lens. The shade shields a part of the light reflected by the reflector and a part of the direct light emitted from the light source and forms a cutoff line of a light distribution pattern. A space is provided between the auxiliary reflector and the shade so as to maintain a light quantity of at least 75% of a main light distribution obtained by the light reflected from the reflector.
Public/Granted literature
- US20080025036A1 Vehicle headlamp Public/Granted day:2008-01-31
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