| 摘要 |
A light sensing apparatus and method for luminaire calibration are provided. Since the lighting frequencies of LEDs are modulated in sequence and a light sensing unit is activated and deactivated periodically, the light intensity received from each LED channel can be measured in sequence. In particular, only the light signals from one channel at one time can be sensed. Further, the received light signals for each channel are compared with the ideal value, and the result can be used for LEDs' calibration. According to the preferred embodiment of the invention, the sensing apparatus includes a plurality of LEDs, regulators, and single light sensing unit for retrieving the light intensities without any switching circuit should be installed. After that, the signals will be transmitted into a driving controller that can switch the light sensing unit, and the light sensing unit can measure the light intensities in a specific period.
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