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:
Apr. 05, 2011
Filed:
Apr. 09, 2007
Rustam Abdulaev, Suwon-si, KR;
Hoon Choi, Hwaseong-si, KR;
Rustam Abdulaev, Suwon-si, KR;
Hoon Choi, Hwaseong-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An LED-based optical system and a method of compensating for aging thereof are provided. The LED-based optical system includes LED blocks composed of a predetermined number of LEDs; a sensor which senses output values of the respective LED blocks; and a control block which generates compensation rates by comparing initial output values of the respective LED blocks in an initial state with comparison output values of the LED blocks sensed by the sensor at a comparison time point, and controls current being supplied to the respective LED blocks in accordance with the compensation rates.