发明名称 |
REFLECTORINRICHTING VOOR EEN ELECTRISCHE SMALLE-STRAAL-LAMP MET EEN ONGEVEER PUNTVORMIGE LICHTBRON. |
摘要 |
1527274 Lamps FA HOFFMEISTERLEUCHTEN KG 30 June 1976 [18 July 1975] 27342/76 Heading F4R A lamp comprises a parabolic main reflector 1 having a central opening 1e to receive the neck of a bulb 3 and a hemispherical auxiliary reflector 4 removably mounted in front of the bulb to reflect a proportion of the light back on to the main reflector, the auxiliary reflector having a central opening 4a in front of the bulb. Light emerging directly through the opening 4a is controlled by a parabolic reflective screen 4b integral with the auxiliary reflector and confocal with the main reflector. The reflector 4 is carried by a lever 6 pivoted at 8 to a circular band 5 mounted inside a cylindrical extension 1c of the main reflector, and can be pivoted downwardly against the action of a spring 7 to enable the bulb to be inserted or removed. The bulb or the auxiliary reflector may be axially adjustable to vary the shape of the light beam. In a modification the reflector 4 is mounted in the centre of a lattice or grating supported by the extension 1c. |
申请公布号 |
NL179610(B) |
申请公布日期 |
1986.05.01 |
申请号 |
NL19760007789 |
申请日期 |
1976.07.14 |
申请人 |
HOFFMEISTER-LEUCHTEN KG. TE LUEDENSCHEID, BONDSREPUBLIEK DUITSLAND. |
发明人 |
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分类号 |
F21V7/00;F21V11/06;F21V17/00;F21V17/04;F21V17/16;F21V19/02;F21V29/00 |
主分类号 |
F21V7/00 |
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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