发明名称 |
Lamp unit for forming a cut-off line and vehicular headlamp using the same |
摘要 |
A lamp unit for a vehicular headlamp includes a projection lens disposed on an optical axis extending in a vehicle longitudinal direction and a semiconductor light-emitting element having a light-emitting chip with a lower end edge formed linearly. The semiconductor light-emitting element is disposed in the rear of the projection lens facing forward so as to position the lower end edge 24 a 1 on the optical axis. The projection lens projects light from a point on the optical axis of the lower end edge within a vertical cross section as parallel light, and projects light from a point on the optical axis of the lower end edge within a horizontal cross section as diffused light.
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申请公布号 |
US7204627(B2) |
申请公布日期 |
2007.04.17 |
申请号 |
US20040940112 |
申请日期 |
2004.09.14 |
申请人 |
KOITO MANUFACTURING CO., LTD. |
发明人 |
ISHIDA HIROYUKI |
分类号 |
F21V1/00;F21S8/10;F21S8/12;F21V5/00;F21W101/10;F21Y101/02 |
主分类号 |
F21V1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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