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:
Mar. 21, 2017
Filed:
Sep. 03, 2015
Liang Fang, Peachtree City, GA (US);
William Lee Shiley, Senoia, GA (US);
James Moan, Peachtree City, GA (US);
James Christopher Andrews, Mabelton, GA (US);
Liang Fang, Peachtree City, GA (US);
William Lee Shiley, Senoia, GA (US);
James Moan, Peachtree City, GA (US);
James Christopher Andrews, Mabelton, GA (US);
COOPER TECHNOLOGIES COMPANY, Houston, TX (US);
Abstract
Dimming or illumination control of an LED-based lighting fixture can utilize a combination of pulse width modulation and constant current reduction. A light emitting diode driver can implement pulse width modulation to control light over a first light intensity range and constant current reduction over a second light intensity range. The first light intensity range can be less intense than the second light intensity range. Thus, the driver can practice constant current reduction for dimming at higher light intensities and pulse width modulation for dimming at lower light intensities.