Incandescent lamp with infrared filter

Details Incandescent lamp with infrared filter Incandescent lamp with infrared filter

1975-03-28

1977-04-12

Kominski, John

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Polarizer or special ray transmission

313113, 313220, 350 1, H01J 6140

Patent

active

040177580

ABSTRACT:
The thermal radiation which is emitted by an electric incandescent lamp is eliminated according to the invention by providing an incandescent lamp with a filter which transmits visible light and which reflects infrared radiation, which filter consists of an interference filter and a heavily doped metal oxide filter which is disposed at the side of the interference filter which is remote from the filament body.

REFERENCES:
patent: 2692350 (1954-10-01), Arnott
patent: 3174067 (1965-03-01), Bahrs
patent: 3188513 (1965-06-01), Hansler
patent: 3209188 (1965-09-01), Freeman
patent: 3279317 (1966-10-01), Ploke
patent: 3288989 (1966-11-01), Cooper
patent: 3325666 (1967-06-01), Bird et al.
patent: 3400288 (1968-09-01), Groth
patent: 3514174 (1970-05-01), Gans et al.
patent: 3531313 (1970-09-01), Dates
patent: 3781077 (1973-12-01), Groth

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