Structural unit comprising a reflector and a halogen cycle incan

Details Structural unit comprising a reflector and a halogen cycle incan Structural unit comprising a reflector and a halogen cycle incan

1981-11-09

1984-08-21

Demeo, Palmer C.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

362347, 362350, H01J 6133, F21V 700

Patent

active

044672390

ABSTRACT:
To reduce the accuracy requirements and permit greater tolerance in placing f a filament of a halogen cycle incandescent lamp (2) of low wattage, for examle 200 W, within a reflector, particularly to provide a source for projection of super-8 mm film on a ground-glass screen surface, the reflector is positioned in a range in accordance with the hyperbolic equations:

REFERENCES:
patent: 3381575 (1968-05-01), Levin
IES Lighting Handbook Fourth Ed., 1966 pp. 6-10 to 6-611.

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