Optical lens precision testing device

The invention discloses an optical lens precision testing device, which belongs to the technical field of optical lens detection, and comprises a base, and a fixed bracket and a placement seat which are arranged at the top of the base, a displacement assembly used for moving the placement seat is arranged at the top of the base, and a moving block of the displacement assembly is connected to the bottom of the placement seat; a positioning assembly for fixing a lens is arranged on the surface of the placement seat; the top of the placement seat is movably connected with a movable clamping plate through an adjusting screw rod; a graduated scale plate is arranged on the surface of the fixed support, fixed plates are arranged on the upper and lower sides of the graduated scale plate, and the surface of each fixed plate is connected with a test assembly for detecting a lens; the device can be adjusted according to the sizes of different lenses, the positioning stability of the lenses is further improved, the preci