Other

Klan Shin Lee

Kheng Leng Tan

Thye Linn Mok

Yew Cheong Kuan

Su Lin Oon

Wen Ya Ou

Norfidathul Aizar Abdul Karim

Fakhrul Arifin Mohd Afif

Sundar Natarajan Yoganandan

Slew It Pang

A light source is disclosed. The light source has a light-emitting chip that includes an LED that generates light in an active region thereof. The LED emits a light signal in a forward direction, and infrared radiation generated in the active region is emitted in a side direction in the form of a first infrared signal. The first light signal is determined by a first drive signal coupled to the LED. The light source also includes an infrared detector positioned to collect a portion of the infrared signal. The infrared detector generates a heat signal indicative of the amount of infrared radiation detected. A controller generates the drive signal so as to maintain the heat signal at a first target value. In light sources having LEDs that emit in different spectral ranges, the infrared detectors can all detect heat in the same spectral range.

Light source utilizing an infrared sensor to maintain brightness and color of an LED device

Growing community of inventors

S.P.U., Penang, Malaysia

Klan Shin Lee