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AssigneeAvago Technologies ECBU IP (Singapore) Pte. Ltd.
InventorsSundar Yoganandan, Thye Mok, Kian Lee, Norfidathul Karim, Su Oon, Siew Pang, Kheng Tan, Fakhrul Afif, Wen Ou, Yew Kuan
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A light source and a method for operating the same are disclosed. The light source includes a light emitter and a controller. The light emitter generates light in response to a control signal coupled thereto. The light emitter is characterized by an age related to the amount of light that has been cumulatively generated by the light emitter, the generated light for a given control signal changing with the age. The controller measures the age of the light emitter and generates the control signal based on the desired light intensity and the measured age of the light emitter. In one embodiment, the controller stores an age value for the light emitter, and the controller determines the control signal in response to an input signal specifying a desired light intensity from the light emitter, the controller updating the age value each time the control signal is determined.
A light source comprising:
A light source comprising:
A method for operating a light source comprising a light emitter that emits light at an intensity determined by a control signal, said method comprising:
The method of 9 wherein said calibration constant is determined by measuring the rate of aging of said light emitter at the time of manufacturer.
Dependencies are inferred from the claim text.