Efficiency arc discharge lamp

Details Efficiency arc discharge lamp Efficiency arc discharge lamp

1974-07-15

1976-01-06

Brody, Alfred L.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

313116, H01J 6140, H01J 516

Patent

active

039315363

ABSTRACT:
The arc tube of an electric discharge lamp is surrounded by a reflective filter. The filter selectively reflects arc discharge radiation outside the visible range to which the arc tube wall is transparent and to which the arc plasma is optically thick, so that the reflected radiation is preferentially absorbed by the plasma and not by the arc tube wall.

REFERENCES:
patent: 2963611 (1960-12-01), Meister et al.
patent: 3162785 (1964-12-01), Scoledge et al.
patent: 3221198 (1965-11-01), Der Wal et al.
patent: 3400288 (1968-09-01), Groth
patent: 3485343 (1969-12-01), Jorgensen

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