Radiant energy – Radiant energy generation and sources – With radiation modifying member
Patent
1989-02-27
1990-09-25
Berman, Jack I.
Radiant energy
Radiant energy generation and sources
With radiation modifying member
2504941, 2504921, 313487, 128396, A61N 506, H01J 6148
Patent
active
049595512
ABSTRACT:
A fluorescent lamp and system for providing cosmetic tanning. The lamp includes a first ultraviolet-emitting phosphor disposed on a portion of the circumference of the interior of an ultraviolet-transmitting glass envelope. A second ultraviolet-emitting phosphor is disposed on the remaining portion the lamp envelope. The lamp further includes bases having electrical contacts extending therefrom and lying in a plane which passes through the demarcation lines formed between the first and second ultraviolet-emitting phosphors. In one embodiment, the proportions of UVB to UVA from the same light source are about 1.6 percent and 4.2 percent. In another aspect of the invention, a suntanning system includes an external reflector positioned adjacent the fluorescent lamp. The external reflector is effective in maintaining approximately the same irradiance level in the UVA region independent of the rotational alignment of the lamp.
REFERENCES:
patent: 3466443 (1969-09-01), Roesler et al.
patent: 3676728 (1972-07-01), Schreurs
patent: 4645969 (1987-02-01), Hoffman
patent: 4703224 (1987-10-01), Rattray et al.
Berman Jack I.
Bessone Carlo S.
GTE Products Corporation
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