Cleaning of mildew on the optical lens with an economical and ordinary Diode laser

Laser cleaning of the mildew on the optics lens with economical and ordinary Diode laser has been studied in this paper. Mucor and Penicillium are the simples tested in the experiments. The mechanism of laser cleaning them is thermal effect through the interacting of photon and mildew.It is demonstrated that Mucor which contaminates lens is more easily cleaned off than Penicillium. With appropriate laser energy density and dosing time, it is possible to removal the mildew form the lenses without any damage . The paper recommends an economical, effective; environmentally-friendly cleaning method which is easy implemented in technology, which is worthy to be applied in the field of cleaning optical instruments.