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:
Aug. 08, 2000
Filed:
Feb. 02, 1998
Mark D Winsor, Seattle, WA (US);
Winsor Corporation, Tumwater, WA (US);
Abstract
A small fluorescent lamp having improved efficiency is described. The lamp includes a lamp body having a serpentine channel therein. The serpentine channel is arcuate in cross section with a fluorescent coating covering the serpentine channel but not the lamp cover to produce an aperture effect. The serpentine channel is reflective such that the cross section forms an aperture effect lamp to improve efficiency. Efficiency is further improved by raising the pressure within the lamp to 70-120 torr. Further efficiency is obtained by limiting the depth of the serpentine channel relative to the width of the serpentine channel such that the electrical discharge is confined within a small cross sectional area. In one embodiment, secondary housings are attached to the lower surface of the lamp to conceal the electrodes beneath the lamp, thereby improving the uniformity of the lamp.