Precise temperature control method for lens surface of large-aperture transmission-type optical lens and optical lens

The invention relates to a large-aperture transmission-type optical lens surface precise temperature control method and an optical lens, and solves the technical problems that in the prior art, when an ITO heating film is plated on the surface of a lens for heating, local hot spots exist, local thermal deformation of lens glass is caused, thermal light dispersion is caused, and the imaging quality is affected. The device comprises a lens assembly, an ITO conductive film, an auxiliary voltage-regulating heater and a light shield, the ITO conducting film is divided into conducting channels, a bonding pad is arranged at the intersection point of the center line of each conducting channel and the ITO conducting film, and the auxiliary voltage-regulating heater is connected with the bonding pads and used for externally connecting auxiliary resistors to the conducting channels; as the sum of the channel resistance and the auxiliary resistance is equal, the current on each conductive channel is equal; a temperature