Do polarizers protect against UV rays, and how to tell if sunglasses are UV resistant

The primary function of polarized sunglasses is to prevent ultraviolet rays and filter polarized light, and good polarized sunglasses lenses can block more than 90% of ultraviolet rays from penetrating. Polarized sunglasses with the "UV400" Best UV Blocking logo have the best UV protection.

Polarizers are lenses made according to the principle of polarization of light, which can exclude and filter scattered light in the beam, protect against ultraviolet rays, and filter polarized light. A good polarizer can achieve the effect of not distorting the color of the surrounding environment, clear edges of objects, effectively identifying different color signal lights, and reducing ultraviolet rays that irradiate the pupil.

In fact, it is not whether the polarizing layer is UV-proof, but whether the polarized lens substrate is UV-proof.

The composition of the polarizer is generally that the middle layer is the polarizing film, the outer side is laminated with TAC composite (some lenses do not have it), and then the outer layer is the lens substrate. The key to UV protection is the substrate.

Polarizers are definitely UV resistant.

Summary. Anti-polarizing glasses are a type of glasses that are specifically designed to reduce or prevent eye strain. Their special lenses filter out polarized light from reflected light from water, snow, glass, and more, reducing glare and enhancing contrast and clarity.

These glasses are suitable for outdoor activities such as driving, fishing, skiing, and mountaineering, as well as indoor work that requires long periods of time to look at a screen, such as using a computer for a long time.

Anti-polarizing glasses are a kind of eyewear chain that specializes in reducing or preventing eye strain. Their special lenses filter out polarized light from reflected light from water, snow, glass, and more, reducing glare and enhancing contrast and clarity. These glasses are suitable for outdoor activities such as driving, fishing, skiing, and mountaineering, as well as indoor work that requires long periods of time to look at a screen, such as using a computer for a long time.

Can you add, I don't quite understand it.

In addition to the functions mentioned above, anti-polarizing glasses also have the following characteristics:1UV protection:

The lenses of anti-polarizing glasses can filter out more than 99% of ultraviolet rays, protect the eyes from ultraviolet damage, and prolong the healthy life of the eyes. 2.Soft and comfortable:

The lens material of anti-polarizing glasses is generally PC material, which is flexible, not easy to break, and light and comfortable to wear. 3.Beautiful and practical:

Anti-polarizing glasses have a sleek and beautiful design, but they are also practical and functional, making them suitable for people of all ages. In general, anti-polarizing glasses are an efficient, practical and beautiful glasses, which can effectively protect eye health and reduce eye fatigue, and are essential for many outdoor sports enthusiasts and people who use computers for a long time.

Most of the current lenses have the function of UV protection, which is actually a coating, and polarizers are a way to allow light to enter the eye in only one direction for sunglasses! If you usually wear glasses with colorless glasses, you can use UV protection, and if you go out, you can choose polarized sunglasses, the effect is more comfortable than ordinary sunglasses! Sunglasses have a better UV protection effect than polarizers.

Polarizing glasses provide another mechanism for eye protection. The reflected light of the asphalt road is a special polarized light. The difference between this reflected light and light coming directly from the sun or any artificial light source is a matter of order.

Polarized light is formed by waves that vibrate in one direction, while ordinary light is formed by waves that vibrate in a non-directional direction, like a group of people who walk in disorder and a group of soldiers marching in a neat pace. Generally speaking, reflected light is an orderly light. Polarized lenses are particularly effective at blocking this light because its filtering properties are at work.

These lenses only allow polarized waves that vibrate in a certain direction to pass through, as if the light is "combed". For road reflections, the use of polarizing glasses can reduce the transmission of light because it does not allow light waves that vibrate parallel to the road to pass through. In fact, the long molecules of the filter layer are directed horizontally and can absorb horizontally polarized light.

In this way, most of the reflected light is eliminated without the entire illumination of the surroundings being reduced.

Eccentric afterfinger lens is a kind of glasses that can prevent ultraviolet rays, and it has the function of filtering light. In general, light rays in nature contain light waves in many directions and vibrational states, some of which are made up of ultraviolet rays. These ultraviolet rays are extremely harmful to our eyes and **.

Through its special material and structure, polarizers can limit the light to only one direction and filter out the ultraviolet rays in it. In this way, when people wear polarizers, they can comfortably and naturally ** the surrounding scenery, and at the same time, it can effectively prevent the damage of ultraviolet rays.

In addition to the advantages of UV protection, polarizers also have the advantage of filtering out dazzling light from the reflective surface and the water surface, thereby reducing people's eye fatigue and improving the visual experience such as driving and water sports.

To sum up, polarizers, as an important glasses for UV protection, are particularly important in today's life. If you want to buy anti-ultraviolet glasses, it is recommended to choose polarizers with better effect, which can better resist the damage of ultraviolet rays, and at the same time can also protect your eyesight and make our eyes healthier.

Solution: Method one, look at the label of the sunglasses.

Sunglasses with anti-ultraviolet function, generally Sakura Brigade has the following ways to express it:

Marked "UV400": This means that the cut-off wavelength of the lens to ultraviolet is 400nm, that is, the maximum value of its spectral transmittance max( ) below the wavelength ( ) below 400nm is not greater than 2%;

Labeled "UV", "UV-proof": This means that the cut-off wavelength of the lens to UV is 380nm, that is, the maximum value of its spectral transmittance below 380nm max( ).

Not more than 2%;

Labeled "100% UV absorption": This means that the lens has 100% UV absorption, i.e. its average transmittance in the UV range is not greater than that.

Method 2: Use banknote + banknote detector pen to verify.

In the absence of instruments, ordinary people can also detect whether sunglasses have the function of anti-ultraviolet rays.

Take a banknote, put the sunglasses lens on the anti-counterfeiting watermark, use a money detector or money detector to take a picture on the lens, if you can still see the watermark, it means that the sunglasses are not UV-proof, if you can't see, it means that the sunglasses are UV-proof.