Patent ID: 9301363
Filing Date: 2016-03-29
CPC Classification: H05B

Claim Text:
1. A circuit comprising: a voltage source; a light-emitting diode (LED) having a desired minimal intensity level associated therewith, the desired minimal intensity level being correlated to a pre-defined LED set-point temperature; a thermal sensor in proximity to the LED and adapted to sense a temperature proximal to the LED; a current regulator interoperably coupled to the voltage source, the thermal sensor, and the LED; wherein, responsive to a sensed temperature greater than the pre-defined LED set-point temperature, current supplied to the LED is increased in a step-wise manner from an original current level to an increased current level; wherein an LED illumination intensity to be not less than the minimal intensity level at the increased current level; and wherein, responsive to a sensed temperature less than a second pre-defined LED temperature, current supplied to the LED is decreased in a step-wise manner from the increased current level to the original current level, the second pre-defined LED temperature being less that the pre-defined LED set-point temperature.