Electric lamp provided with an interference filter

Details Electric lamp provided with an interference filter Electric lamp provided with an interference filter

1986-06-05

1988-03-29

Moore, David K.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Polarizer or special ray transmission

313315, H01J 508, H01K 132

Patent

active

047346140

ABSTRACT:
The electric lamp according to the invention has a lamp vessel (1) of glass having an SiO.sub.2 content of at least 95% by weight, in which an electric element (3) is arranged. The lamp vessel is coated with an interference filter (5) of alternating layers of SiO.sub.2 and Nb.sub.2 O.sub.5.

REFERENCES:
patent: 3962062 (1976-06-01), Ingrey
patent: 4652789 (1987-03-01), Kawakatsu et al.

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