Device for automatically adjusting LD current turn-off delay of projector and control method

The invention discloses a device for automatically adjusting the LD current turn-off delay of a projector, and the device comprises the projector, a projection screen, a brightness testing module anda controller, the controller is connected with the brightness testing module, the controller and the brightness testing module communicate through a communication protocol, and the controller and theprojector are connected and communicate through the communication protocol; wherein the projector outputs a black field signal and projects the black field signal to a projection screen, the brightness test module measures the brightness of the screen and transmits brightness data to the controller, and the controller outputs LD current turn-off delay data to the projector after calculation. According to the device for automatically adjusting the LD current waveform of the projector, after a corresponding software method is added, the problem that the LD current waveform of a part of machinesand reset pulses of a part