High efficacy electrodeless high intensity discharge lamp

Details High efficacy electrodeless high intensity discharge lamp High efficacy electrodeless high intensity discharge lamp

1989-05-08

1990-11-20

Wieder, Kenneth

Electric lamp and discharge devices

With gas or vapor

With particular gas or vapor

313643, 315248, 315344, H01J 6118

Patent

active

049721208

ABSTRACT:
Improved efficacy and color rendition are achieved in a high intensity discharge, solenoidal electric field (HID-SEF) lamp by using a novel combination of fill ingredients, including lanthanum halide, sodium halide, cerium halide, and xenon or krypton as a buffer gas. The preferred lamp structure is that of a short cylinder having rounded edges in order to achieve isothermal lamp operation and further efficacy improvement.

REFERENCES:
patent: 3334261 (1967-08-01), Butler et al.
patent: 4591759 (1986-05-01), Chalek et al.
patent: 4783615 (1988-11-01), Dakin
patent: 4810938 (1989-03-01), Johnson et al.

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