External field laser optical axis deviation detection device and method

The invention discloses an outfield laser optical axis deviation detection device and method, and belongs to the field of photoelectric measurement. The outfield laser optical axis deviation detection device comprises a light spot instrument, an optical filter, a detected photoelectric system and a target; the target is located right in front of the tested photoelectric system, and the light spot instrument and the tested photoelectric system are located at the same horizontal height and are placed in parallel; the tested photoelectric system comprises a display screen, an aiming shaft, a laser assembly and a visible light assembly; the optical axis of the visible light assembly intersects with the optical axis of the laser assembly at infinity. The aiming shaft is an electronic telescopic optical system, the display screen is provided with an image by the electronic telescopic optical system, and an electronic cross division is arranged in the center of the display screen and is used for accurate aiming or i