Illumination – Light source and modifier – Including reflector
Patent
1981-05-21
1983-11-15
Walsh, Donald P.
Illumination
Light source and modifier
Including reflector
353 78, 353 79, 353119, 355 67, 355119, 362 97, 362223, 362263, 362374, 362297, F21V 700
Patent
active
044159587
ABSTRACT:
A lighting device for uniformly illuminating transparencies. The device comprises an open-ended, rectangular parallelepiped-shaped housing having specularly reflective interior surfaces and a partially reflecting/diffusing opal glass screen positioned over the housing open end. An elongated electronic flash tube is mounted within the housing in a manner whereby a substantially uniform illumination is provided at the exterior surface of the opal glass screen when the flash tube is fired.
REFERENCES:
patent: 4200392 (1980-04-01), Suatek
patent: 4329045 (1982-05-01), Rees
Caufield Francis J.
Polaroid Corporation
Walsh Donald P.
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