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:
Jul. 10, 1979
Filed:
Aug. 01, 1977
Thomas W Dey, Rochester, NY (US);
James D Howe, St. Louis, MO (US);
Eugene C Letter, Rochester, NY (US);
Bausch & Lomb Incorporated, Rochester, NY (US);
Abstract
A luminaire useful in illuminating a task area and having particular application for roadway lighting includes a monochromatic light source which is preferably a low pressure sodium lamp which can be an elongated tubular light source disposed within a housing defined by a reflector having a configured reflection surface to principally control light distribution along the length of the roadway with the lamp being at least partially surrounded and in a specific embodiment totally surrounded by a cylindrical tube acting as a substrate for a multilayer interference mirror to principally control light distribution across or transverse to the roadway. This combination of elements, in particular cooperation with their specific configurations, provides a predetermined light pattern on a task surface such as the example roadway.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile