光照度传感器采用热点效应原理，最主要是使用了对弱光性有较高反应的探测部

The illuminance sensor adopts the principle of hot spot effect, and the most important thing is to use detection components that have a high response to low light. These sensing elements are actually like the photosensitive matrix of a camera. There is a winding electroplating type multi-contact thermopile inside, and the surface Coated with a black coating with high absorptivity, the hot junction is on the sensing surface, and the cold junction is located in the body, and the hot and cold junctions generate a thermoelectric potential.

Lightness sensors use the principle of hot spot effect, the most important is the use of weak light has a higher reaction to the detection components, these induction originals are actually like the camera's photosensitive matrix, the interior has a winding electroplating multi-contact thermoelectric reactor, its surface is coated with a high absorption rate of black coating, hot contacts in the induction surface, and cold junctions are located in the body, hot and cold contacts produce temperature difference potential.

In fact, the most sensitive point of the sensor is the heat sensitive point, which is located on the surface of the body potential.<br>