What Kinds Of Films Are On The Glasses?

The eye is a very important visual organ for human beings, and its structure is very sophisticated and complex. There are various kinds of "membranes" in human eyes, and each type of membrane has its own unique function. The importance of "membranes" to the eyes is evident. But not only the eyes, but also there are "films" on glasses, and there are many types. The "films" of glasses are not so much a film, but are actually a special microstructure in nature, but because the structure is continuous and the thickness is very thin (molecular level), so It is called "membrane" vividly. Different glasses "films" have different microscopic molecular structures and bring different protective effects.

Anti-fog film

Anti-fog film is also called hydrophilic nano film layer, which can overcome the surface tension of water droplets and greatly reduce the chance of mist generation. When the lens with this kind of film layer is used together with a special lens cloth, a good and long-lasting anti-fogging effect can be achieved by rubbing it.

To put it simply, the anti-fog film does not repel water droplets, but arranges the water mist molecules on the lens surface closer and smoother, forming a "water film" with good light transmission.

Waterproof membrane

The waterproof film is a very thin top film that can make the surface of the lens hydrophobized. It is difficult for oil and water droplets to stay on the surface of the lens and fall off automatically, so it has a waterproof and antifouling effect. The principle is the same as the rolling of water drops on the lotus leaf .

The surface of the waterproof membrane is actually small bumps. The gaps between the bumps are too small, smaller than water molecules, so that when water molecules fall on it, they can’t be "embedded" in the gaps. Rolled down under the action of gravity.

The essence of the waterproof membrane is to reduce the contact area between water and oil and the lens, so that the oil and water droplets are not easy to adhere to the surface of the lens.

Dustproof "film"

The dustproof function of the lens, due to the i-technology technology, makes the molecular structure of the lens surface denser, and dust cannot "infiltrate". The principle is actually similar to that of a waterproof membrane.

Anti-reflective film

Anti-reflective film is also called anti-reflection film, that is, by coating multiple layers of transparent materials with different refractive indexes and different thicknesses on the front surface of the lens, the principle of light interference is used to reduce the excess reflected light on the surface of the lens.

After the anti-reflection coating is added to the lens, the light permeability will increase, the wearer will feel that the glare is reduced, and the vision is more realistic and bright.

Wear resistant film

In order to improve the wear resistance of the lens, it is necessary to use a hardening liquid containing organic matrix and inorganic ultrafine particles to plate a hard film on the surface of the lens, so that the surface of the lens has both toughness and hardness. This film is a wear-resistant film, which can reduce scratch damage.

Anti-ultraviolet & anti-blue film

The medium and long-wave ultraviolet rays in the sun are very harmful to human eyes and skin. Independent research has shown that 50% of the ultraviolet rays that enter the human eye are reflected by the back surface of the lens. Similarly, studies have found that blue-violet light in the wavelength range of 415-455 nanometers is the most harmful to retinal cells.

In order to deal with the damage of ultraviolet and blue-violet light to human eyes, a technology called "broad-spectrum coating" came into being. The biggest advantage of this "membrane" structure is that it can intelligently filter harmful light and pass normal light.

It is precisely because of these different glasses film layers that our eyes have been protected accordingly. When choosing glasses, we must pay more attention to the film layer on each eye and choose the film that our eyes need in order to get Better protection.