Protective ultraviolet-transmitting sleeve for fluorescent lamp

Details Protective ultraviolet-transmitting sleeve for fluorescent lamp Protective ultraviolet-transmitting sleeve for fluorescent lamp

1976-06-04

1977-09-13

Demeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313112, 240 114R, H01J 6140, H01J 6142

Patent

active

040485374

ABSTRACT:
A protective shield for an ultraviolet-emitting fluorescent lamp comprising a tubular sleeve coaxially surrounding the lamp envelope and formed of a plastic material, such as a fluorocarbon resin of a fluorinated ethylene-propylene, which has a spectral transmittance of at least about 80 percent of the ultraviolet radiation emitted from the lamp over the wavelength range from about 320 to 400 nanometers and substantially maintains such transmittance, along with mechanical integrity, after at least about 1000 hours of lamp operation.

REFERENCES:
patent: 2382939 (1945-08-01), Koch
patent: 3157812 (1964-11-01), Friedman et al.
patent: 3673401 (1972-06-01), Du Pont
patent: 3720826 (1973-03-01), Gilmore et al.
patent: 3787382 (1974-01-01), Wright et al.
patent: 3798481 (1974-03-01), Pollara
patent: 3808495 (1974-04-01), Win

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