UV absorbing fused quartz and its use for lamp envelopes

Details UV absorbing fused quartz and its use for lamp envelopes UV absorbing fused quartz and its use for lamp envelopes

1994-09-26

1996-10-29

O'Shea, Sandra L.

Electric lamp and discharge devices

With gas or vapor

Envelope composition

313493, H01J 1716

Patent

active

055699790

ABSTRACT:
Fused quartz containing europium oxide, titanium dioxide and cerium oxide has been found to be effective for absorbing UV radiation while transmitting visible light radiation. Uses for this material include lamp envelopes and shrouds for halogen-incandescent lamps and metal halide arc discharge lamps which emit both UV and visible light radiation.

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patent: 5028967 (1991-07-01), Yamada et al.
patent: 5196759 (1993-03-01), Parham et al.
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