The Basic Processing Flow of Optical Lenses

Optical cold processing process

• The first step: milling and grinding is to remove the uneven bubbles and impurities on the surface of the lens, which plays a molding role (about 0.05-0.08)

• The second step is the precision grinding process, which eliminates the damaged layer of the milled lens and fixes the R value.

• The third step is the polishing process, which involves polishing the finely ground lens in one go. The main purpose of this process is to improve the appearance.

• The fourth step is cleaning, which involves removing the polishing powder from the surface of the polished lens to prevent it from being crushed.

• The fifth step is edge grinding, also known as coring, which involves grinding the original outer diameter of the lens to the specified outer diameter.

• The sixth step is coating, which is to coat the surface of the lens that needs to be coated with one or more layers of colored film or other films.

• The seventh step is to apply ink, which is to apply a layer of black ink on the outer edge of the lens to prevent reflection.

• The eighth step is bonding, which involves combining two lenses with opposite R values and the same outer diameter material with adhesive.

• Special processes: multi piece processing (disc processing) and small spherical processing (20 axis) wire cutting according to different production processes.

• There may be slight differences in the art and process, such as the order of ink coating and bonding.