Manufacturing method of vacuum coating equipment glass lens

           

1, the previous method: to melt and good optical glass having a diameter of lens diameter to be machined slightly larger in the molding process of the glass rod, and then cut according to the thickness of the lens sheet. Get the specialized machining equipment, according to the requirements of processing into finished products. Machining process mainly: coarse, medium grinding, fine grinding, grinding, polishing, annealing. Coarse to fine grinding of materials are mainly various grit silicon carbide. Polishing method, in the case of less demanding, can be polished by a flame. Advanced lenses must mechanically polishing material is generally cerium oxide.

2, the present method is the first molding die pressing. Mainly in order to reduce waste caused by the original method of processing and improve work efficiency. Methods are: to determine the quality of molten glass good quality according to the lens, to a certain temperature, the viscous state of the glass in a mold, press-molding, the final annealing.

The results in two ways: First, once in place, molded products can achieve the dimensional accuracy requirements. Minimal defects can be compensated by the coating. The mold is very high, as far as I know is not currently available. This product can meet most needs. Accuracy is mainly affected by the lens mold precision. Second is the high precision moldings blank, and then press the above original machining methods, but the processing small amounts, can significantly improve production efficiency. Demanding precision products use this method. Lens is mainly affected by the machining precision instrument precision.