Electric lamp with light-absorbing coating, precursor...

Details Electric lamp with light-absorbing coating, precursor... Electric lamp with light-absorbing coating, precursor...

2007-11-06

2011-10-18

Hines, Anne (Department: 2879)

Electric lamp and discharge devices

With gas or vapor

Having electrode exterior to envelope

C313S623000, C313S627000, C313S635000, C313S636000, C313S642000

Reexamination Certificate

active

08040065

ABSTRACT:
An electric lamp is described, which has a quartz glass lamp vessel (10) accommodating an electric element (3, 4). The lamp vessel locally has a light-absorbing, non-reflective coating (11, 12). The coating mainly consists of iron, iron oxide, silicon, and silicon dioxide, the ratio of the weight percentages of iron (compounds) and silicon (compounds) being in the range of 0.17<=iron (compounds)/silicon (compounds)<-12, and the ratio of the weight percentages of silicon and silicon dioxide being in the range of 0.5<=silicon/silicon dioxide<=50.

REFERENCES:
patent: 3961968 (1976-06-01), Wales
patent: 5619102 (1997-04-01), Scholler
patent: 2837280 (1980-03-01), None
patent: 3827451 (1989-10-01), None
patent: 0708978 (1996-05-01), None
patent: 1422491 (1976-01-01), None
patent: 9531001 (1995-11-01), None
patent: 9615548 (1996-05-01), None

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