High pressure discharge lamp with arc tube heat shield

Details High pressure discharge lamp with arc tube heat shield High pressure discharge lamp with arc tube heat shield

1986-03-26

1987-03-17

DeMeo, Palmer C.

Electric lamp and discharge devices

With temperature modifier

Double wall, jacket or casing for envelope

313 44, 313634, 313 42, H01J 6130, H01J 6152

Patent

active

046510486

ABSTRACT:
A high-pressure discharge lamp provided with a cylindrical shield near an end and around and at a certain distance from the discharge envelope. The cylindrical shield is electrically insulated from current-conveying parts, so that migration of filling constituents through the wall of the discharge envelope is counteracted.

REFERENCES:
patent: 2315286 (1943-03-01), Hays, Jr. et al.
patent: 4037129 (1977-07-01), Zack et al.
patent: 4173728 (1979-11-01), Witting
patent: 4230964 (1980-10-01), Bhalla
patent: 4423353 (1983-12-01), Ogata et al.

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