PROJECTION-TYPE HEAD LAMP FOR VEHICLE,申请号JP19960271035-传众专利搜索

PROJECTION-TYPE HEAD LAMP FOR VEHICLE

申请公布号：JPH10119637(A)

申请号：JP19960271035

申请日期：1996.10.14

申请公布日期：1998.05.12

申请人：

KOITO MFG CO LTD

发明人：HAYAKAWA MICHIHIKO

分类号：B60Q1/04;F21S8/12;F21V5/04;F21V8/00;F21V13/00;(IPC1-7):B60Q1/04;F21M3/05

主分类号：B60Q1/04

摘要：<p>PROBLEM TO BE SOLVED: To provide light distribution with good visibility in a simple and compact structure by using an optical fiber for a light source device. SOLUTION: A head lamp has a light source device A to guide light from a light source 12 provided outside a body 30 through an optical fiber 20 into the body 30, a projection lens 50 arranged in front of the light emission end 23 of the optical fiber in the body 30 and a light distribution pattern forming shade 40 provided in front of the light emission end 23 and at the backward focal point of the projection lens 50. Plural convex lenses 51, 52, 53 with different focal distances as vertically continuous single stage multi-lenses form the projection lens 50, so that the number of parts are reduced, the body is made smaller and a large diffused light distribution pattern with a small quantity of light formed by the convex lens 51 with a short focal distance and a gathered light distribution pattern with a great quantity of light formed by convex lenses 52, 53 with long focal distances are combined to form a light distribution pattern excellent in modulation and visibility.</p>