Galvanometer motor

A galvanometer motor, comprising:

• a stator, wherein the stator comprises a housing and a drive coil mounted inside the housing;
• a rotor, wherein the rotor comprises a rotating shaft and a galvanometer lens, a pair of radially magnetized magnetic poles are at the middle of the rotating shaft, two ends of the rotating shaft are rotatably mounted inside the housing, and one end of the rotating shaft extends outside the housing and is connected to the galvanometer lens;
• and
• a sensor board, wherein the sensor board is fixed on an inner wall of the housing and is at one end of the housing that is farther away from the galvanometer lens, the sensor board is mounted with one or more magnetic sensors, and the one or more magnetic sensors are configured to sense a magnetic field signal generated by the pair of magnetic poles, to obtain absolute positions of the rotating shaft and the galvanometer lens,
• wherein a first restrictive member is mounted on the housing, a second restrictive member is connected to the rotating shaft, and the first restrictive member and the second restrictive member restrict fit each other, wherein a central angle formed by a first limit position, a second limit position, and an axis of the rotating shaft is less than 90°.