Optical Sensor Device Calibration

An optical sensor device configured to perform detection of an object, comprising:

• a light-emitting element configured to emit light to the object;
• a light-receiving element configured to sense reflected light from the object;
• a temperature sensor configured to provide a temperature signal in response to an ambient temperature;
• a temperature compensation unit coupled to the temperature sensor to read the temperature signal and configured to perform a temperature compensation process to generate a compensated signal strength;
• and
• an analyzer coupled to the temperature compensation unit and configured to receive the compensated signal strength to process and to generate a detection result,
• wherein the temperature compensation process comprises:
• receiving a first signal strength (SS_OFF) when the light-emitting element is turned off;
• receiving a second signal strength (SS_ON) when the light-emitting element is activated;
• obtaining a compensation factor according to the temperature signal;
• and
• generating the compensated signal strength based on the first signal strength (SS_OFF), the second signal strength (SS_ON), and the compensation factor.