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:
Jan. 04, 1994
Filed:
Apr. 03, 1992
Kurt Zwirner, Melrose, MA (US);
John Stark, Upper Falls, MA (US);
Dolan-Jenner Industries, Inc., Woburn, MA (US);
Abstract
A linear lighting system includes a rod made of a material such as glass surrounded by an outer layer of cladding of lower refractive index than the glass. The rod is ground flat on one side to produce a flat rough surface with the texture oriented transverse to the longitudinal axis of the rod. Light from a light source enters the rod at one end of the rod. As the light propagates down the rod, it is scattered by the rough flat surface. Some of the scattered light strikes the rounded surface at an angle which allows it to pass through the cladding and escape the rod, thus producing uniform linear lighting emitted from the round side of the rod.