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. 13, 2013
Filed:
Mar. 01, 2011
Yuan-ching Chen, Kaohsiung, TW;
Hsueh-chih Chang, Changhua County, TW;
Hung-lieh HU, Hsinchu, TW;
Hsiang-chi Chung, Hsinchu County, TW;
Yuan-Ching Chen, Kaohsiung, TW;
Hsueh-Chih Chang, Changhua County, TW;
Hung-Lieh Hu, Hsinchu, TW;
Hsiang-Chi Chung, Hsinchu County, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A lighting system for dim ambience has at least one light source module, implemented in an ambience. The light source module has multiple light emitting units. Each unit is respectively controlled to produce a luminance. A luminance detecting unit detects a photonic luminance and a luminance ratio. A processing and operation module calculates a mesopic luminance according to the photonic luminance and the luminance ratio. When the photonic luminance is less than a dim-light setting value, a power control information is obtained by a fitness operation with a given condition set. The power control information is corresponding to an optimized mesopic luminance after fitness. A control unit receives the power control information to modulate the luminance of the light emitting units.