The assembly position of the lens is fixed with metal wire, nylon wire and screws by means of grooves or holes, which affects the cutting of the lens and the shape of the glasses. Connect the left and right lens rings or directly connect with the lens. The bridge of the nose is either directly placed on the nose or supported on the nose through the stipules.

A pair of glasses frame is usually composed of mirror ring, nose support, pile head, mirror foot and other main parts. In addition to the above parts, there are also foot sleeve, bracket screw, hinge screw, etc.