Metal vapor lamp having internal coating for extending condensat

Details Metal vapor lamp having internal coating for extending condensat Metal vapor lamp having internal coating for extending condensat

1979-12-26

1982-07-13

Krawczewicz, Stanley T.

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For plural electrodes of discharge device

313220, 313227, H01J 1716, H01J 6130

Patent

active

043396860

ABSTRACT:
The coating on the inside of a metal halide lamp for promoting the formation of a liquid condensate film consists of particles of a refractory oxide in generally block-like or spherical or fiber-like shapes. Block-like or spherical particles should be laid down as monolayers with the distances between particles being of the order of the particle dimensions. Fiber-like particles may be also laid down as a monolayer or, alternatively, in a coating several diameters thick to form "fiber piles" having a free volume for holding liquid which is much greater than the volume of the fibers.

REFERENCES:
patent: 3234421 (1966-02-01), Reiling
patent: 3619682 (1971-11-01), Lo et al.
patent: 3935495 (1976-01-01), Scott, Jr. et al.
patent: 4161672 (1979-07-01), Cap et al.
Waymouth, The Effects of Arc Tube Geometry, Electric Discharge Lamps, 1971, pp. 231-234.

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