The reflection of the lens can reduce the light transmittance and form an interference image on the retina, which affects the quality of the image and the appearance of the wearer. For example, the appearance of the lens is obviously vortex, and the eyes of the wearer cannot be seen by the opposite light. The coated lens is to use the new technology of optical film and vacuum to coat a certain thickness of single-layer or multi-layer optical film, so that the lens can obtain some new excellent performance that was not originally available, so as to improve the ability of the lens to reflect light. The effect of enhancing or reducing light transmission increases the light transmittance of the lens to 98%. The coating layer mainly includes hard film, multilayer anti-reflection film, anti-fouling film and so on.
The main functions of each layer are: 1) Add hard film: increase the hardness of the lens surface to make it more wear-resistant. 2) Anti-reflection film: increase the visible light transmittance of the lens and the performance of anti-ultraviolet and anti-radiation. 3) Anti-fouling film: Due to the technical requirements of anti-reflective film, the film has large inter-molecular gaps, and the surface of the lens is easy to hold dirt and dirt. The material of the anti-fouling film has small molecular particles and small gaps between molecules, making the surface of the lens more compact. Bright and clean, with added functions such as waterproof, anti-fog, dust-proof, and anti-pollution. Therefore, the main advantages of lens coating are: Coated glasses can reduce the reflected light on the surface of the lens, see clearly, reduce the reflected light on the mirror surface, increase the light transmittance, and also solve the problem of taking pictures under strong light with glasses, and also increase the aesthetics. Coated glasses can prevent damage to eyesight caused by ultraviolet, infrared and X-rays. Wearing coated glasses is not easy to fatigue. The eyesight of the staff in front of the fluorescent screen can be protected. If the ordinary lens can be seen clearly, there is no need to add a film. If you want to add, the resin lens can be added with an anti-reflective film or a hard film. The glass lens generally only has an anti-reflective film. The coated lenses appearing on the market are generally treated with a multi-layer film to make them have multiple functions. Pay attention to the detailed description of the lens when purchasing.