Optical element mounting structure

The utility model provides an optical element installation structure which comprises an installation base plate and an installation seat located at the bottom of an optical element, a circular truncated cone is fixedly arranged at the top of the installation base plate, a coaxial rotary table is arranged at the top of the circular truncated cone, and a limiting sleeve which is in up-down elastic sliding connection is arranged on the circular truncated cone in a sleeved mode. A notch is formed in the peripheral wall of the rotary table, two arc plates with opposite inner arc surfaces are fixedly connected to the bottom of the mounting base, and a limiting rod matched with the notch for use is fixedly connected between the two arc plates. The round table and the rotary table are arranged on the mounting bottom plate, the two arc plates and the limiting rod between the two arc plates are arranged at the bottom of the mounting seat, so that the mounting bottom plate can be quickly butted with the mounting bottom