The utility model discloses a pop-up light shield based on a memory
metal spring, which relates to the technical field of light shields of optical systems, and comprises a fixed shield and a pop-up shield, the end part of one side of the fixed shield is provided with a plurality of mounting plates, and the plurality of mounting plates are uniformly arranged along the outer circumference of the fixed shield; a plurality of first limiting flanges are arranged at the end part of the other side of the fixed cover; a plurality of limiting guide rails are arranged on the inner wall of the pop-up cover, and each limiting guide rail is in sliding connection with the corresponding first limiting
flange; the side face, close to the pop-up cover, of the mounting plate is connected with the end, away from the fixed cover, of the pop-up cover through a memory
metal spring, the memory
metal spring is arranged in a heating
pipe in a sleeved mode, one end of the heating
pipe is connected with the mounting plate, and the other end of the heating
pipe is bonded to the pop-up cover. The self-unfolding mechanism adopts a self-unfolding mode of the memory metal spring, is simple in structure and convenient to deploy, and has better movement stability and higher unfolding precision.