At present, the mainstream lens coating machine is an electron gun evaporation type. Under vacuum conditions, the electron gun is used to emit electrons, melt the material, form a high-energy material molecule emission, and finally deposit on the lens surface. The thickness of the control film is generally 2 kinds, crystal vibrator The control uses the vibration frequency control, and the optical electrode value method is optically controlled.
What are the benefits of lens coating?
There are two main types of lens coating: one is anti-reflection coating, which is to coat multiple layers of transparent materials with different refractive index and different thickness on the front surface of the lens, and use the principle of light interference to reduce the extra reflected light on the lens surface. After the lens is added with anti-reflection film, the permeability to light will increase, the wearer feels that the glare is reduced, and the sight is more real and bright. The other is to add hard coating, mainly used for resin lenses. It is generally added to the front surface of the lens to enhance the wear resistance of the resin lens, and at the same time the light permeability is also enhanced. When cleaning the lens with hard coating, users should first wash the front and back surfaces of the lens with clean water, and then dry it with a clean soft cloth. Take care not to wipe the lens when it is dry. If the ordinary lens can be seen clearly, there is no need to add a film. If it is added, the resin lens can be added with an anti-reflection film or a hard film. The glass cutting machine generally only adds an anti-reflection film.
