Which material is better for the lens of glasses, is it resin or glass

1. Glass lens.

Glass lenses are more commonly used and are more scratch-resistant than lenses made of other materials, but their relative weight is also heavier.

2. Polymer resin lenses.

Polymer resin lenses are lighter than glass lenses and are impact resistant and unbreakable, but because of their lower hardness, they are more prone to scratches than glass.

Disadvantages of plastic lenses:

1.Easy to scratch: Plastic lenses have less scratch resistance than glass lenses, but they can be improved by case hardening, but the effect is limited.

2.The thickness is thicker than that of glass lenses: it is human nature to love beauty, and lenses that are too thick are very attractive, and people with deep myopia are more afraid of the road. Although there has been a lot of improvement recently, it is still much thicker than glass lenses.

3.It is easy to deform during framing: this is due to the fact that the density of plastic lenses is lower than that of glass lenses.

4.Not resistant to high temperatures: Although the resin is a thermosetting material, once the multilayer film is coated, the surface of the multilayer film may crack due to high temperatures.

The advantages of glass lenses are good clarity and light transmittance, and the lenses are more scratch-resistant, but there are two very bad shortcomings that lead to a very low market share, the lenses are heavy and fragile, and the advantages of resin lenses are light in weight, strong in impact resistance, safe and durable, but the lenses are easy to scratch, and the advantages of resin lenses are greater on the whole.

Look at the effect, with the user group, the popularity of resin tablets is higher.

Plastic lenses. It is an optical lens made of resin. There are many kinds of materials, which have their own unique advantages compared to glass lenses:

1. Light. Generally plastic lenses are, while optical glass.

2. Impact resistance.

Strong. The impact resistance of plastic lenses is generally 8 10kg cm2, which is several times that of glass, so it is not easy to break, safe and durable.

3. Good light transmittance. in visible light.

area, the light transmittance of the resin lens.

Similar to glass; Infrared light.

zone, slightly higher than glass; In the ultraviolet region, starting from 0 4um, the light transmittance decreases with the decrease of wavelength, and the light with a wavelength less than 0 3um is almost completely absorbed.

4. Low cost. Injection-molded lenses can be mass-produced by manufacturing a single precision mold, saving processing costs and time.

5. Able to meet special needs. Such as aspherical lenses.

It is not difficult to make, but glass lenses are very difficult to do.

Plastic lenses are good. Because the plastic lens is light and thin, for patients with a large degree of myopia, you can consider choosing plastic lenses, which have a high refractive index, can be made thinner, and the weight is relatively light, and the wearing comfort is better.

Features of plastic lensesIt can prevent dents, and the general high-heat and small-volume substances are easy to cause dents and spots in the glass sheet, but if it touches the plastic lens, it will automatically pop open, and will not cause any marks on the surface of the lens.

The thermal conductivity of anti-fog plastic lenses is lower than that of glass, and it is not easy to produce blurred phenomena due to steam and hot water, and even if it is blurred, it will fade quickly, and it can block ultraviolet rays almost completely and completely block ultraviolet rays with a wavelength of less than 350mm, and the effect is far better than that of glass lenses.

At present, most of the plastic lenses on the market are used. Because plastic lenses are light and thin, for patients with large myopia, they can consider using plastic lenses, which have a high refractive index, can be made relatively thinner, and are relatively light in weight and comfortable to wear.

In addition, plastic lenses are safer, like children because they are lively and active, and the plastic lenses will not break when they are hit by external forces, and the glass lenses are easy to accidentally hurt the eyes after forming fragments.

However, plastic lenses are not resistant to high temperatures and abrasion, and are prone to scribing, so patients need to replace them regularly.

I think plastic lenses are better because when the lenses accidentally fall to the ground, the plastic lenses don't break, but the glass lenses shatter and you can get stuck in your feet.

Is it better to have a glass lens or a resin lens, and the optical characteristics of a resin lens: 1The surface gloss and smoothness of plastic lenses are in no way inferior to those of ordinary glass lenses.

2.The refractive index of plastic lenses is lower than that of ordinary glass lenses, so plastic lenses of the same power are thicker. 3.

The dispersion of plastic lenses is very similar to that of glass lenses. 4.The see-through rate of plastic lenses is 92%, which is more than 2% higher than that of general glass lenses

The surface is prone to scratches, and the coating is better, and the glass lens is heavier and fragile, but it is not easy to scratch. If it is a primary and secondary school student, it is best to use resin to prevent the lens from breaking and scratching the eyes.

Glass lenses: high refractive index and high definition, but easy to fall and relatively heavy.

Plastic lenses: light, good toughness, not easy to fall, refractive index is lower than glass lenses, but most people choose plastic lenses, the price is more suitable;

Plastic lenses and glass lenses are the two types of lenses that are common and popular. Of course, glass lenses appeared a little earlier than plastic lenses, but at present, the use rate of plastic lenses is higher than that of glass lenses, and glass lenses have gradually replaced them.

At present, most spectacle lenses on the market are made of resin, which is lighter and more resistant to falls than glass lenses, and coated plastic lenses are better than glass lenses.

Therefore, the two are better than plastic lenses.

The former is better. Because the former is durable, safe, and trustworthy.

Personally, I think it is better to have plastic lenses.

Hello dear, happy to answer your <>

If you compare plastic lenses with glass lenses, I personally think that plastic lenses are better. It is thinner than glass lenses, for patients with large myopia, you can consider using plastic lenses, which have a high refractive index, and can be made thinner, and the weight is relatively light, and the wearing comfort is better. In addition, the safety of plastic lenses is higher, like children because they are lively and active, and the plastic lenses will not break when they are hit by external forces, while the glass lenses are easy to hurt the eyes by mistake after forming fragments.

Pros:1Lightweight and comfortable to wear; 2.

Good impact resistance, not easy to break; 3.Good anti-ultraviolet performance, which can effectively prevent ultraviolet hedging damage to the eyes; 4.**Relatively convenient, more economical than glass lenses.

Cons: 1It is easy to scratch and needs to be replaced regularly; 2.

It is not resistant to high temperature and is easy to deform; 3.It has poor scratch resistance and is susceptible to corrosion by chemicals. Glass lenses:

Pros:1Strong scratch resistance, not easy to scratch; 2.

High temperature resistance, not easy to deform; 3.Good light transmittance, not easy to produce color difference; 4.Long service life.

Cons: 1Heavy weight, not comfortable to wear; 2.

Poor impact resistance and easy to break; 3.**Relatively high and more expensive than plastic lenses; 4.UV protection is poor, and additional UV coating is required.

Therefore, the choice between plastic lenses and glass lenses needs to be chosen according to the actual situation and needs of the individual. For example, if you need to wear it for a long time, have a wide range of motion, or need to do outdoor sports, it is recommended to choose plastic lenses; If you need more protection and a longer lifespan, you can opt for glass lenses. Hope mine can help you. 