Electric discharge lamp apparatus for light source of automotive

Details Electric discharge lamp apparatus for light source of automotive Electric discharge lamp apparatus for light source of automotive

1993-05-18

1995-02-28

Coles, Sr., Edward L.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Polarizer or special ray transmission

313635, H01J 6140

Patent

active

053940504

ABSTRACT:
In an electric discharge lamp apparatus for a car lighting instrument in which an arc tube forming a light source body and mounted on the front of an insulating base is surrounded by an ultraviolet-ray shielding globe constituted by a glass globe body whose surface is covered with a ZnO film, a waterproof SiC film is further formed on the ZnO film. The SiC film prevents the ZnO film from separating and peeling due to erosion caused by water droplets forming due to condensation or the like, and also prevents the ZnO film from becoming dull due to reaction with moisture.

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