Modern people, due to watching TV, computers, reading, etc., make glasses myopia. When many friends are equipped with mirrors, they are often disturbed by various types of lenses. Today, I would like to ask Xiaobian to introduce the lens ...
What are the glasses lenses
Modern people, due to long -term watching TV, computers, reading, etc., make glasses myopia. When many friends are equipped with mirrors, they are often disturbed by various types of lenses. Today, I would like to ask the editor to introduce the types of the lens? China? China? China? China? China? China.
Generally, the lens coating has green membrane, golden film, purple -red film, blue film, yellow -green film and other membrane layers.
The anti -radiation resistance of the blue film is better.However, the light transmission rate is not as good as the green film.The transmission of green membrane is better.But wear is not as resistant to blue film.
There are two main types of lens plus films: one is anti -reflective membrane, that is, by plating a multi -layer of different refractive indexes and different thickness of transparent materials with different thicknesses on the front surface of the lens, the principle of light interference is used to reduce the excess reflection light on the surface of the lens.After the lens is added with anti -reflective membrane, the permeability of the light will increase, the wearer feels that the glare is reduced, and the vision will be more real and brighter.The other is a hard membrane, which is mainly used for resin lenses.It is generally added to the front surface of the lens, which enhances the resistance of the resin lens, and the permeability of the light is also enhanced.
Because the surface of radiation -proof lens is plated with a blue -proof radiating film layer, there are some blue colors on the surface of the lens on the left and right shaking lenses.
1. Add a hard membrane.It uses silica hard technology on the surface of the lens to make its abrasion resistance close to glass.The strong membrane plating is thicker, about 3 to 5 μm.For coated resin lenses, the sound of the desktop tap and the color brightness of the lens can be identified.Sounds with crisp sound and bright edges are treated hard.
2. Reduce the reject membrane.Using the principle of light interference, a metal plating layer of the 1/4 light wave length thickness on the surface of the lens is plated on the surface of the lens, so that all the light is used through the lens without reflection, and the ultraviolet rays below 380nm and infrared above 700nm can be removed. Filter the strong light under the strong light.Dazzling glare, removing fantasy, and reducing lens vortex and increasing aesthetics.At present, the thickness of the multi -layer reducing membrane is about 0.3 μm. Mostly, high -purity metal oxide materials such as titanium oxide and oxide are used to achieve a good reflection effect by plating the surface of the resin lens through the evaporation process.After reducing the reflective membrane, there will be residual colors, which are mostly green.For lenses that need to be harder, first hardened treatment and then reduced reflection membrane.
3. Anti -polluting membrane.The material of the anti -polluting membrane is mainly fluoride, which can cover the porous reducing retractable layer, and can reduce the contact area of ??water and oil and lens, so that oil and water droplets are not easy to adhere to the surface of the lens. Therefore, it is also called a waterproof film.EssenceThe method of vacuum coating is mostly vacuum -plated.The membrane layer is thinner, about 0.005 to 0.01 μm.
4. Anti -radiation film.Anti -radiation matter is a metal compound that forms a barrier on the surface of the lens.According to the principle of electromagnetic interference shielding, the conductive membrane layer is plated on the surface of the lens with a special coating process, which can reflect and absorb low -frequency radiation and microwave radiation, eliminating potential heat fever caused by low -frequency radiation to prevent visual fatigue.
5. Polarized film.The polarizer in the eye lens is divided into two types. One is the relatively thick polarized film that is relatively thick in the middle of the lens. The edge of such a lens presents a very obvious "sandwich" state.One is a new type of polarizer attached to the surface of the lens. This lens is more beautiful.
6. Anti -UV film.Can block harmful ultraviolet rays in the sun.
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