Lens, a transparent material with one or more curved surfaces made of optical materials such as glass or resin. After grinding, it is often assembled with the eyeglass frame to form glasses, which is used to correct the vision of users and obtain clear vision. There are many ways to classify lenses, which can be classified according to the materials, functions and surface treatment technology of lenses.

HCVAC vacuum optical coating machine is applied to lens, lens, digital camera, smart phone, projector, filter and other industries. It is specially designed for the production of optical thin film products with few layers but high production capacity and high efficiency. The antireflection film can reduce the surface reflected light of lens and increase the transmission light. When there are many lenses, they must be low reflection. In addition to multilayer films, double-layer films with specific wavelengths are also used on MgF2 monolayer and laser head, which can be coated on plastic products at low temperature.