Method for detecting and adjusting assembly angle of optical image-splitting optical element

The invention discloses a method for detecting and adjusting the assembly angle of an optical image-splitting optical element, which comprises the following steps of: assembling the optical image-splitting optical element to an optical camera system or replacing an optical element in the optical camera system, and shooting to obtain an optical image, more than two sub-pictures of the optical image are arranged according to a certain rule; detecting whether deviation exists between the sub-picture distribution and preset distribution or not; if yes, adjusting the assembly angle between the optical image-splitting optical element and the optical camera system; and locking the angle between the optical image-splitting optical element and the optical camera system. According to the method and the device, the distribution condition of all pictures in the shot optical image is detected, and the assembly angle between the optical image splitting optical element and the optical camera system is adjusted according to