Lens structure

The invention discloses a lens structure which comprises a lens cone, a lens module arranged in the lens cone and a diaphragm detachably installed in the lens cone. The inner wall of one end of the lens barrel is circumferentially and concavely provided with at least two rotary clamping groove structures at intervals, each rotary clamping groove structure comprises a mounting guide notch and a limiting groove which are communicated with each other, and the limiting grooves and the mounting guide notches are distributed in a staggered manner in the circumferential direction; at least two clamping parts in one-to-one correspondence with the rotary clamping groove structures are arranged on the peripheral wall of the diaphragm; when the diaphragm is installed, the diaphragm is rotated, and the clamping part slides into the limiting groove from the corresponding installation guide notch and is limited in the limiting groove. Compared with a cover cap mode, the structure is compact, the size is small, and the occu