Method and device for detecting assembly precision of camera module

The invention discloses a method and device for detecting the assembly precision of a camera module, and the method comprises the steps: firstly adjusting the centers of a light-transmitting graphic card, a cross laser instrument and a 3D camera to be aligned through the cross laser instrument, and then carrying out the alignment of the centers of a light-transmitting graphic card, the cross laser instrument and the 3D camera according to the principle that the colors of objects at different distances in a scanning image of the 3D camera are not consistent. The purpose that the 3D camera is parallel to the light-transmitting graphic card and the centers of the 3D camera and the light-transmitting graphic card are aligned is achieved by adjusting the light-transmitting graphic card, then the camera module to be tested is operated similarly so that the camera module to be tested is parallel to the 3D camera and the centers of the camera module to be tested are aligned, and finally a picture of the light-transmi