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. 09, 1977
Filed:
Jun. 28, 1976
John Richard Dean, Memphis, TN (US);
International Telephone and Telegraph Corporation, New York, NY (US);
Abstract
Disclosed is an outdoor luminaire employing as its external lens, panels of one-way reflecting glass. During the day, or with the interior lamp unlit, the panels provide an opaque outer surface reflective of the surroundings. With the lamp lit, the panels act merely as lenses passing the light emitted by the interior lamp. In order to make the luminaire opaque, diagonal baffles are provided to extend from each corner of the luminaire toward the lamp and lamp prismatic refractor. These baffles tend to produce four separate compartments with opaque interior walls to prevent the lamp and internal components from being visible when the lamp is unlit. By making the baffles reflective, a further enhancement of the internal masking is effected while further enhancing the optical characteristics of the luminaire when lit.