Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1981-09-28
1984-05-01
Demeo, Palmer C.
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313 47, 313112, 313113, H01J 6135, H01J 6140, H01J 6152
Patent
active
044463979
ABSTRACT:
A high intensity discharge lamp is provided with means for reflecting infrared radiation from the hot central portion of the arc tube onto the cooler end portions of the tube. The infrared reflective means may be provided by one or more infrared reflecting shields surrounding a portion of the arc tube or by an indentation in the outer glass envelope of the lamp.
REFERENCES:
patent: 2254845 (1941-09-01), Gustin et al.
patent: 2799791 (1957-07-01), Honing et al.
patent: 3662203 (1972-05-01), Kuhl et al.
patent: 4278910 (1981-07-01), Keeffe et al.
Johnson Peter D.
Silverstein Seth D.
Davis Jr. James C.
DeMeo Palmer C.
General Electric Company
Snyder Marvin
Steinberg William H.
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