Lens detection device

The invention discloses a lens detection device. The lens detection device comprises a first detection device, the lens detection device is used for detecting the center thickness of a lens and is arranged above a carrier, and the lens detection device further comprises a second detection device which is arranged on the periphery of the carrier and is used for detecting the outer diameter error ofthe lens, the second detection device comprises more than or equal to four pneumatic displacement sensors, the pneumatic displacement sensors are positioned on the periphery of the carrier and are arranged at intervals along the circumferential direction of the carrier, each pneumatic displacement sensor is a displacement sensor with a detection end which can move along the radial direction of the lens to until to be in contact with the edge of the lens, and each pneumatic displacement sensor is radially adjustably connected to the base through a mounting device. According to the invention, the center thickness and t