Backlight source detection tool and automatic adjusting method thereof

The invention discloses a backlight source detection tool. The backlight source detection tool comprises a base and a controller, an angle sensor and two supporting arms are arranged in the middle ofthe base, one end of one supporting arm is fixedly connected with a rotating shaft of the angle sensor, one end of the other supporting arm is rotationally connected with the rotating shaft of the angle sensor, and the other ends of the two supporting arms are each provided with an automatic clamping jaw; servo motors are arranged at the two ends of the base respectively, output shafts of the servo motors are fixedly connected with lead screws, the lead screws are in threaded connection with sliding blocks, and the sliding blocks at the two ends are in sliding connection with the two supporting arms respectively; and the servo motors are electrically connected with the controller. The invention further discloses an automatic adjusting method of the backlight source detection tool. According to the backlight source