Incandescent projection lamp with internal reflector having ligh

Details Incandescent projection lamp with internal reflector having ligh Incandescent projection lamp with internal reflector having ligh

1977-01-13

1979-04-17

Kominski, John

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

362296, 362347, H01J 516

Patent

active

041503163

ABSTRACT:
An incandescent projection lamp which includes a reflector located within the lamp's envelope at an established distance from a biplanar filament structure. The lamp provides bidirectional light output with the reflector having an opening therein for defining the light output in one of the directions.

REFERENCES:
patent: 1637429 (1927-08-01), Stewart
patent: 2261001 (1941-10-01), Muldoon
patent: 2810321 (1957-10-01), Ulffers
patent: 3025424 (1962-03-01), Wiley et al.
patent: 3555338 (1971-01-01), Scoledge
patent: 3622832 (1971-11-01), Schlessel

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