发明名称 |
Lamp reflector unit |
摘要 |
A lamp reflector unit to be used for projection purposes and comprising a reflector body and a light source accommodated therein. The reflector body is covered with a reflective layer extending from the top of the reflector body up to a distance from the largest circumferential edge of the reflector body. The distance is between 3 mm and 10 mm, dependent on the desired angle of divergence of the reflected beam light rays.
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申请公布号 |
US4181930(A) |
申请公布日期 |
1980.01.01 |
申请号 |
US19770823401 |
申请日期 |
1977.08.10 |
申请人 |
U S PHILIPS CORP |
发明人 |
MEWISSEN, JAN A C;VAN BEEK, FERDINANDUS M J |
分类号 |
G03B21/14;F21V7/20;H01K7/02;(IPC1-7):F21V7/00;F21V1/22 |
主分类号 |
G03B21/14 |
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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