After the glass lens approximate body is softened at high temperature, it is pressed into a shape with a precision mold. The aspheric glass lens has the inherent good refractive index, dispersion characteristics, and environmental adaptability of glass. In addition, the aspheric characteristics can better correct distortion and isometric off-axis aberrations, thereby reducing the number of optical components used, simplifying the system structure, and improving the imaging quality of the optical system.