Electric lamp and discharge devices – With gas or vapor – Envelope with particular structure
Patent
1979-12-20
1986-03-04
DeMeo, Palmer C.
Electric lamp and discharge devices
With gas or vapor
Envelope with particular structure
313636, H01J 6135
Patent
active
045742189
ABSTRACT:
In a high intensity metal halide discharge lamp, means are provided associated with the interior surface of the envelope to promote the formation and spreading of a liquid film of condensate thereon. Such a film can lower the color temperature as a result of pressure broadening and self-reversal of the sodium line, and also by acting as a color correcting filter. The film-promoting means may be a coating which imparts an irregularity to the surface such that the reduction in exposed surface area by coverage with a uniform liquid film is energetically favored. Alternatively, a chemically different surface better wetted by the metal halide dose may be used.
REFERENCES:
patent: 2568459 (1951-09-01), Noel
patent: 3153169 (1964-10-01), Bauer
patent: 3350598 (1967-10-01), Corbin et al.
patent: 3379302 (1968-04-01), Burggraaf et al.
patent: 3488540 (1970-01-01), Villain et al.
patent: 3619682 (1971-11-01), Lo et al.
patent: 4047067 (1977-09-01), Clausen
patent: 4161672 (1979-07-01), Cap et al.
"Electric Discharge Lamps," by John F. Waymouth, MIT Press 1971, pp. 231-234-The Effects of Arc Tube Geometry.
Bateman, Jr. Robert L.
Soules Thomas F.
DeMeo Palmer C.
General Electric Company
Herkamp N. D.
Jacob Fred
Schlamp Philip L.
LandOfFree
Metal vapor lamp having internal means promoting condensate film does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Metal vapor lamp having internal means promoting condensate film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal vapor lamp having internal means promoting condensate film will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1595701