发明名称 |
High voltage movie light and incandescent lamp unit for use therewith |
摘要 |
A high voltage movie light including a plastic holder, a pair of spaced-apart incandescent lamp units positioned within the holder, and means for electrically connecting the lamp units to an external power source. Each lamp unit comprises a formed glass reflector and a tungsten-halogen lamp located within the reflector and having a planar, dual filament structure therein. The lamp units are positioned within the holder such that the planes occupied by the respective dual filament structures intersect at a predetermined angle, e.g. 90 to 110 degrees, in order that the light output from each unit will be centered on a respective diagonal of the rectangular subject field being illuminated by the movie light. Each unit produces a bimodal intensity distribution, thus further assuring increased illumination levels on the subject field. An incandescent lamp unit suitable for use in the movie light is also disclosed.
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申请公布号 |
US4169237(A) |
申请公布日期 |
1979.09.25 |
申请号 |
US19780939930 |
申请日期 |
1978.09.06 |
申请人 |
GTE SYLVANIA INCORPORATED |
发明人 |
ENGLISH, GEORGE J.;LEVIN, ROBERT E.;FLEMING, RAYMOND T. |
分类号 |
F21V7/04;F21S10/00;F21V7/09;F21V7/22;G03B21/20;H01K1/32;H01K7/02;(IPC1-7):H01K1/14 |
主分类号 |
F21V7/04 |
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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