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, 2006
Filed:
Aug. 20, 2004
Frank M. Sharp, Dallas, TX (US);
Arthur D. Heald, Plano, TX (US);
Michael J. Zalta, Richardson, TX (US);
Frank M. Sharp, Dallas, TX (US);
Arthur D. Heald, Plano, TX (US);
Michael J. Zalta, Richardson, TX (US);
Lailai Capital Corp., City of Industry, CA (US);
Abstract
A traffic signal () having a reflector () having a plurality of reflective surfaces () directing incident ambient light received from the signal lens () to a photodetector (). The reflector is disposed proximate and about a plurality of LEDs () which are pulse width modulated by an integrated controller () to generate light which is also transmitted through the lens. The photodetector senses the incoming ambient light when the LEDs are in the 'off' mode. Incident ambient light is focused by a lens to overfill the reflector and LEDs, and the photodetector is positioned within the redirected incident ambient light from the lens.