The process of processing optical materials such as crystals, glass (optical glass), and optical resins used for making various types of concave-convex lenses and prisms into lenses, prisms, and other optical parts as needed is called optical processing, and it includes both manual grinding and mechanical processing. Optical glass or resin sheet, cut into a material suitable for processing the shape of the spectacle lens is the spectacle lens blank.
Because the laser has a series of advantages such as good directionality, high energy and good monochromaticity, since its introduction in the sixties, it has been highly valued in the field of scientific research, promoting the rapid development of many fields, especially the application of laser in the processing field. Traditional laser processing machine in industrial products, has been widely used in recent years in the laser micro-processing has also been widely emphasized.
Laser micromachining is of great significance in the production of electronic devices, medical and automotive products with complex structures of small holes or tiny grooves. Because the diameter of the holes and grooves in these products is getting smaller and smaller, and the tolerances of these dimensions are getting tighter and tighter. Only lasers are able to meet all the requirements placed on micromachined parts from 1 μm to 1 mm. The small thermal action area of laser machining allows accurate control of the machining range and depth, ensuring high repeatability, good edges and wide versatility [1].