Function Explanation：
The main function of the light sensor is to sense the intensity of light, and feedback to the handheld device, automatically adjust the brightness of the screen, so as to achieve the purpose of saving electricity.
Work Principle：
Light sensor is made up of two components, which uses cast light modulator to focus light, then transmits light through lens, and then receive it to sensor, the sensor receives the light signal into electrical signal, the telecommunication signals can be made to further more different kinds of switch and control action, its basic principle is to cast light modulator covered by the light to do the action of received signal to complete all kinds of automation control.
Usage Introduction:
At present, light sensors are widely used in mobile phones, tablets and other devices.
The light sensor is located in the middle part of Mi logo and the receiver (the same position as the distance sensor). After turning on the "automatic brightness adjustment" function of the phone, when the light sensor feels the external light is strong, the screen will automatically light up, which can display good visual effect even in the outdoor.When the sensor senses low ambient light, the screen darkens, saving power and protecting eyes.