Disassembling and assembling positioning mechanism of optical lens

The invention discloses an optical lens dismounting positioning mechanism which comprises an optical lens body and a lens connecting piece, a connecting sleeve, an internal thread and an external thread are used in cooperation, the connecting sleeve and the lens connecting piece can be in threaded connection, and a positioning hole, a positioning plate and a locking assembly are used in cooperation. The connecting sleeve can be locked and positioned, the situation that the optical lens body deviates or accidentally falls off in the using process is avoided, the using stability can be improved, the contact area of the locking rod and the lens connecting piece can be reduced through the spherical part arranged at the end of the locking rod, and therefore friction generated during threaded connection is reduced, and the service life of the optical lens is prolonged. According to the optical lens connecting piece, the sliding ring and the annular sliding groove are used in cooperation, the effect of limiting the