Projection lamp comprising single ended arc discharge lamp and a

Details Projection lamp comprising single ended arc discharge lamp and a Projection lamp comprising single ended arc discharge lamp and a

1980-07-02

1983-05-31

Smith, Alfred E.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Polarizer or special ray transmission

313639, 313792, 313564, 313113, 362293, H01J 516, H01J 6140

Patent

active

043862926

ABSTRACT:
A projection lamp comprises a single-ended metal halide arc discharge lamp disposed within a curved reflector and an interference filter disposed in front of the reflector, the filter being highly transmissive of visible light and reflective of radiation for which the metal halide, in molten salt form, is highly absorptive.

REFERENCES:
patent: 3528725 (1970-09-01), Barkley
patent: 3704928 (1972-12-01), Coombs et al.
patent: 3974410 (1976-08-01), Collins et al.
patent: 4095881 (1978-06-01), Maddox
patent: 4302699 (1981-11-01), Keeffe et al.

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