Lens clamping device and recognition system and method

The invention discloses a lens clamping device and an identification system and method.The lens clamping device comprises an adsorption assembly and a background plate, the adsorption assembly penetrates in the axial direction to form a light channel, the background plate blocks the corresponding end of the light channel, a first identification enhancing face is formed on the front side face of the adsorption assembly, and a second identification enhancing face is formed on the front side face of the background plate; when a lens is adsorbed to the front end of the adsorption assembly, the first recognition enhancement surface and the second recognition enhancement surface both face the lens, and at least part of the projection of the edge of a shell of the lens on the first recognition enhancement surface falls into an area limited by the first recognition enhancement surface. And the projection of the light through hole of the lens on the second identification enhancement surface completely falls into an ar