Lens structure

The utility model belongs to the technical field of optical imaging, and discloses a lens structure, the lens structure comprises a lens barrel, a fixing ring and a diaphragm adjusting assembly, the periphery of the lens barrel is provided with a first slot and a clamping groove, and the first slot penetrates through the lens barrel along the radial direction of the lens barrel; the fixing ring comprises a central hole, a second slot communicated with the central hole is formed in the peripheral part of the fixing ring, a clamping block is convexly arranged on the hole wall of the central hole, the lens barrel penetrates through the central hole, the first slot and the second slot coincide in the radial direction of the lens barrel, and the clamping block is clamped in the clamping groove; the diaphragm adjusting assembly passes through the first slot and the second slot. The lens structure provided by the utility model is convenient to assemble, effectively ensures that the diaphragm adjusting assembly is fi