Optical pointer with illuminance control device

The utility model discloses an optical pointer device with a light illuminating degree controlling device, comprising a light source, an optical sensor mode used to receive the reflection light generated after the light source projects on a working surface, meanwhile getting an image and a parameter, a central processing unit which receives the optical sensor mode and receives the parameter, after calculation, a feedback controlling signal is generated, a current controller, which connects the central processing unit, receives the feedback controlling signals and changes the current to control the illuminating strength of the light source. The above structure makes the optical pointer device can effectively increase the quality of the image and improve the controlling preciseness of the computer cursor.