Anti glare coating technology is used to coat non reflective transparent film on glass, which can inhibit up to 99% light reflection. It can realize the function of turning on anti glare function immediately after the car starts, automatically detect the environment light, and identify according to the light intensity of the rear of the car. When the ambient light is lower than the set value and the rear light intensity is higher than the set value, the rearview mirror will start automatically The engraving changes from the total reflection state to the dark green anti glare state. After the strong light is reflected by the mirror, it is no longer dazzling and achieves the effect of electrochromism.