Invention Grant
- Patent Title: Vehicular headlamp having a columnar light guide
- Patent Title (中): 车载前照灯具有柱形光导
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Application No.: US13075771Application Date: 2011-03-30
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Publication No.: US08632232B2Publication Date: 2014-01-21
- Inventor: Kazuki Okui , Akio Inoue
- Applicant: Kazuki Okui , Akio Inoue
- 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: JP2010-824499 20100331
- Main IPC: B60Q1/00
- IPC: B60Q1/00 ; F21V9/00 ; F21V11/00

Abstract:
A vehicle lamp includes, within a lamp chamber formed by a lamp body and a front cover, a light source, a columnar light guide having an incident portion at the end thereof in the vicinity of the light source, and an annular reflecting portion arranged in the vicinity of the light source side of the incident portion. The columnar light guide guides incident light from the light source, which enters via the incident portion, and irradiates the incident light from a light-emitting portion on a front side. The annular reflecting portion reflects light with a large emission angle, which has not been able to directly enter the incident portion from the light source, toward the incident portion. The light source is arranged on a central axis of the annular reflecting portion.
Public/Granted literature
- US20110242830A1 VEHICLE LAMP Public/Granted day:2011-10-06
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