Invention Grant
- Patent Title: Vehicle lamp unit
- Patent Title (中): 车灯单元
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Application No.: US12544826Application Date: 2009-08-20
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Publication No.: US08092058B2Publication Date: 2012-01-10
- Inventor: Masashi Tatsukawa
- Applicant: 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: JP2008-212900 20080821
- Main IPC: B60Q1/04
- IPC: B60Q1/04 ; F21V11/00

Abstract:
There is provided a vehicle lamp unit. The vehicle lamp includes: a projection lens disposed on an optical axis extending in a vehicle longitudinal direction; a semiconductor light emitting element comprising a light emitting surface having an almost rectangular shape and disposed behind a rear focal point of the projection lens such that a long side of the light emitting surface is substantially perpendicular to the optical axis; and a reflector comprising a reflection surface having an almost oval shape. A first focal point of the reflector is located on the rear focal point of the projection lens, and a second focal point of the reflector is located on the semiconductor light emitting element, and a minimum distance between the reflection surface and a rear corner portion of the light emitting surface is in a range of about 0.3 millimeters (mm) to about 3 mm.
Public/Granted literature
- US20100046244A1 VEHICLE LAMP UNIT Public/Granted day:2010-02-25
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