Movable lens apparatus

The utility model relates to a movable lens device. The device comprises a lifting mechanism which uses a micro-nut mechanism and a guiding mechanism which uses dense planting ball bearing. The lifting mechanism uses the micro-nut mechanism provides driving for vertical linear motion of the lens and has the characteristics of high positioning precision, self-locking, convenient installation and disassembling and strong changeability and the like; and the guiding mechanism which uses dense planting ball bearing can lead the lens to do vertical linear motion and guarantees the inclination of the linear motion and the linear precision. The utility model can realize the mobility of the lens and lead the lens to achieve micron-sized position precision and positioning precision on the single degree of freedom linear motion.