The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 30, 1990
Filed:
May. 07, 1990
Steven C Schlitt, Merrimac, MA (US);
GTE Products Corporation, Danvers, MA (US);
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.