Is it better to have a purple or green film for spectacle lenses, just went to the optical store

This should be distinguished according to their own eye habits, generally for outdoor sports more, you can choose purple film, purple film anti-ultraviolet.

Better, above the degree is recommended to be green.

Film, green film has better light transmittance and anti-reflection, which is currently the most commonly used.

The highest-end lenses are all yellow-green film, the color of the yellow-green film is relatively light, the light transmittance is high, the reflected light is reduced, and the reflection is prevented. Blue film lenses are the first radiation-proof lenses to come out, and the light transmittance is relatively poor, and sometimes you can even feel the blue color when you wear it. Nowadays, the green film is relatively large, and there are high, medium and low grades and various refractive indices.

Green film is relatively good for the eyes. Because it is close to the color of nature, the eyes will quickly fit.

Each coating has its own characteristics. The green film is a more common film, and it is also the most practical, we all know that seeing green things often relaxes the eyes, so the green film can make our eyes see more easily. The blue film is often referred to as anti-radiation lenses, which can effectively block the damage of electromagnetic waves to the eyeball.

The price of yellow film is relatively high, and the film layer of many high-end lenses is yellow, because the spectral range of green and blue is relatively wide, and the spectrum is slightly deviated from the green and blue, which can be completed by ordinary coating equipment. The yellow-green spectral range is relatively narrow, and the slight deviation of the spectrum will show different colors, and the requirements for equipment and process are relatively high, only coating equipment like LEYBOLD can be completed, and the color of the film is very light, indicating that there is little reflected light, and the quality of the lens is naturally high.

If you want to open an optical store, the investment is generally 5-100,000 yuan, and the cost of joining a brand optical store is usually between 10-200,000 yuan, and the higher can reach more than 500,000 yuan. In the case of limited funds, if you want to join to get help, it is recommended to choose the brand, some of which are free of franchise fees, and there will not be much investment. And it is easier to open the market, which can better introduce later consumption.

Overall, green film is better.

Generally speaking, green film is a more advanced and complex film system than blue film and purple film, the anti-permeability pass-band is wider and flat, and the anti-permeability valley point is in the visible spectrum** (so it shows green).

At present, except for the blue film produced by Essilor, which does not have electromagnetic wave blocking, other blue film resin sheets are conventional, and almost all of them have this function. There are some varieties of green film, and some varieties do not, but the anti-reflection effect of green film is higher and the appearance is beautiful. There are several types of lens coatings, such as green film, blue film, and purple red film.

Generally speaking, blue and green film lenses can increase the comfort of the eyes and are better for eye protection. In addition, the higher the refractive index, the thinner the spectacle lens, the better the light transmittance, and the refractive index of glasses on the market is now divided into several types.

Disadvantage of non-coated lenses:

1. Reflection and refraction. When light passes through the front and back surfaces of uncoated lenses, refraction and reflection will occur at the same time, and this refraction and reflection phenomenon will have some undesirable effects. For example, when others look at the eyes of a person who wears glasses, they cannot see the eyes at all, but can only see a white light on the surface of the lens; In addition, the refraction and reflection of uncoated lenses can make it impossible for the wearer to take pictures with clear eyes, which will affect the aesthetics.

2. Due to the different curvature of the front and back of the uncoated lens, the internal reflection between the front and rear surfaces will cause a virtual image near the apogee spherical surface, which will affect the normal vision, and over time, it will cause irreversible damage to the eyes.

3. It is easy to wear and corrode, which is very easy to understand, and lenses without coating protection are easy to produce scratches when wiping.

The ** of the lens is not determined by the color of the membrane. It is determined by the brand, quality, refractive index, coating process, etc. of the lens. And now most of the green film on the market, so that the blue film is more special, scarce is expensive, and the blue film generally has some functions, such as radiation resistance, so it may be high.

Full-cycle vision health management.

Summary. Hello! The main differences between green film and purple film are:

1. Different light transmittances

The light transmittance of the green film lens is relatively high among all coated lenses, and its light transmittance has reached, while the light transmittance of the purple film is lower than that of the green film.

2. The effect is different

The green film has a certain effect on relieving eye fatigue, because the green light can play a role in relieving the fatigue of glasses on the eyeballs, and there will be no uncomfortable feeling when wearing it for a long time. Purple film can effectively prevent radiation from mobile phones and TVs and other products, but if you wear it for a long time, it is easy to feel eye fatigue.

3. Security is different:

The green film protects against a variety of glare rays such as ultraviolet and infrared rays, which can damage the eyes. The purple film has a strong ability to prevent radiation, but it does not have the ability to filter harmful glare, and the anti-ultraviolet function is relatively low.

4. Different wear resistance:

The permeability zone of the green film is wider and flatter, and the film system is more advanced and complex, so the wear resistance is relatively low. The abrasion resistance of purple film is higher than that of green film.

Glasses are divided into green film and purple film, why purple film is easy to see fatigue.

Hello! The main differences between green film and purple film are 1. Different light transmittance: the light transmittance of green film lens is relatively high among all coated lenses, and its light transmittance has reached.

2. The effect is different: the green film has a certain effect of relieving eye fatigue, because the green light can play a role in relieving the fatigue of glasses on the eyeballs, and there will be no uncomfortable feeling when wearing it for a long time. Purple film can effectively prevent radiation from mobile phones and TVs and other products, but if you wear it for a long time, it is easy to feel eye fatigue.

3. Different safety: the green film can be used to prevent a variety of glare such as ultraviolet and infrared rays that can damage the eyes. The purple film has a strong ability to prevent radiation, but it does not have the ability to filter harmful glare, and the anti-ultraviolet function is relatively low.

4. Different wear resistance: the permeability pass zone of the green film is wider and flatter, and the film system is more advanced and complex, so the wear resistance is relatively low. The abrasion resistance of purple film is higher than that of green film.

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No, no. No more pro-<>

1. Green film lenses can prevent blue light.

Nowadays, people are increasingly using mobile phones to surf the Internet, and most people also accept yellow-green Heng Guang, Therefore, green film lenses are more suitable, anti-blue light can play a protective role in the eyes, and the effect is very good In daily life, you should be careful not to overuse your eyes, reduce long-term exposure to mobile phone screens and computer screens, and perform eye exercises frequently.

2. Is green light film better than blue light film for eye protection?

In addition to having general hardening, anti-fouling, anti-reflection, anti-radiation and other functions, the green film also has excellent UV resistance, which is suitable for people who work outdoors for a long time. In addition to the general hardening, anti-fouling, anti-reflection and anti-ultraviolet rays, the blue film is also very resistant to radiation, and it is suitable for computer workers and other people who are more affected by radiation.

The highest-end lenses are all yellow-green film, the color of the yellow-green film is relatively light, the lens with high light transmittance, reduced reflected light, anti-reflective, and blue film is the earliest anti-radiation lens, and the light transmittance is relatively poor, and sometimes you can even feel the blue color when you wear it. Nowadays, the green film is relatively broad, and there are high, medium and low forest files and various refractive indices.

Glass lenses are more scratch-resistant than lenses made of other materials, but their relative weight is also heavier, and their refractive index is relatively high: ordinary lenses, ultra-thin lenses: above, up to.

The main raw material for glass lenses is optical glass. It has a higher refractive index than plastic lenses, so glass lenses are thinner than plastic lenses at the same power. The light transmittance and mechanical and chemical properties of glass lenses are relatively good, with a constant refractive index and stable physical and chemical properties.

Lenses without color leakage are called optical white sheets, and the pink lenses in this wax line colored film are called Crockel lenses (red lenses). Crocksel lenses absorb ultraviolet rays and absorb bright light slightly.

The glass sheet has superior optical properties, is not easy to scratch, and has a high refractive index. The higher the refractive index, the thinner the lens. However, the glass is fragile and the material is on the heavy side.

The right one is the best. You can't simply say that green film or yellow film is better, depending on which one you need and which one is suitable.

Features of green and yellow film spectacle lenses:

1. Green film lenses are more common in life, but green film is divided into several different lenses, green film anti-ultraviolet lenses, green film double anti-lenses, and green film aspherical lenses.

2. Yellow film, also known as ** film, most of them are spherical lenses, which are relatively high-grade lenses in double anti-radiation (anti-radiation, anti-ultraviolet) lenses, with high hardness, wear-resistant and waterproof. Light transmittance is the best among coated lenses.

Now there are blue light spectacle lenses on the market, which are widely popular.

Nowadays, lenses are generally green film, distinguish whether the lens is good or not, don't just look at the color of the film, like Essilor lenses are light green, lighter than most films. But it's good! The coating of the lens is multi-layered, anti-fog, anti-reflective, wear-resistant, anti-radiation, and anti-ultraviolet.

In addition, I personally recommend green film instead of blue film, the biggest difference between blue film and green film is that the light transmittance of green film lens is as high as above, while the light transmittance of blue film lens is not as good as green film, only reached. However, in terms of wear resistance and scratch resistance, the wear resistance of blue film lenses is much higher than that of green film lenses, and at the same time, blue film lenses also have anti-electromagnetic wave radiation from computers, televisions, mobile phones, etc., which is more comprehensive in the performance of eye protection.

Compared with green film lenses, blue film lenses filter harmful strong light and have lower UV protection performance, unlike green film lenses, which can prevent 100% ultraviolet rays, infrared rays and a variety of harmful glare from damaging the eyes, and the damage to the eyes is relatively small. Therefore, in terms of safety performance, green film lenses can prevent macular degeneration and cataract and other eye diseases in the eye due to blue film lenses, and truly prevent vision impairment and vision loss.

The biggest advantage of green film lenses is that in addition to safety, the wearing comfort is also better, because green is closer to nature, and there will be no uncomfortable feeling when worn for a long time, while blue film lenses are easy to cause eye fatigue if worn for a long time, so green film lenses are more comfortable to wear than blue film lenses.

Yes, green film is currently the most used lens.

In addition to the general hardening, anti-fouling, anti-reflection, anti-radiation and other functions, the green film lens has outstanding anti-ultraviolet ability, which is suitable for people who have been engaged in outdoor work for a long time.

Now optical lenses are basically used with coated lenses, green film is currently the most used lenses, coated lenses can not only protect against ultraviolet rays, and computer generated electromagnetic waves, radiation! It can also increase the light transmission of the lens! Makes it clearer to see things for me!