Electric lamp

Details Electric lamp Electric lamp

1995-11-06

1997-04-08

O'Shea, Sandra L.

Electric lamp and discharge devices

With gas or vapor

Envelope with particular structure

313636, 313634, H01J 1716, H01J 6130, H01J 6135

Patent

active

056191022

ABSTRACT:
The electric lamp has a quartz glass lamp vessel (10) in which an electric element (3, 4) is accommodated. The lamp vessel locally has a light-absorbing, non reflective coating (11, 12). The coating mainly consists of 2 to 10% by weight of glass which is free of lead oxide and has a softening point between 600.degree. and 700.degree. C. Iron 50 to 60% by weight, primarily in metallic form, and manganese oxide, 30 to 55% by weight, are dispersed therein.

REFERENCES:
patent: 4061946 (1977-12-01), Schreurs

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