Led-based optical system and method of compensating for aging thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsRustam ABDULAEV, Hoon CHOI
Life of this patent
Estimating the term…
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.
Claims32
An LED-based optical system comprising:
- LED blocks each 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 based on the sensed output values and controls current being supplied to the respective LED blocks in accordance with the compensation rates.
A method of compensating for aging of an LED-based optical system, comprising:
- generating initial output values of LED blocks each composed of a predetermined number of LEDs in an initial state;
- generating comparison output values of the LED blocks by sensing output values of the LED blocks at a comparison time point;
- generating specified compensation rates by comparing the initial output values with the comparison output values;
- and
- compensating outputs of the LED blocks based on the specified compensation rates.
Dependencies are inferred from the claim text.