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We should pay attention to identification when purchasing polarized sunglasses. In fact, the difference and identification methods between polarized glasses and sunglasses are relatively simple.

As long as the two polarized lenses are stacked vertically if the light is not transparent, it means that it is a true polarized lens. Because the special design of the polarized lens only allows parallel light to pass through the lens, when the two lenses are stacked vertically, most of the light will be blocked.

To talk about polarizers and sunglasses, we must first introduce some knowledge of polarizers and sunglasses.

The difference between polarized glasses and sunglasses

Both polarizers and general sunglasses have the effect of preventing ultraviolet rays and reducing the intensity of light, but general sunglasses do not have the function of isolating or converting polarized light. This is the difference between polarizers and sunglasses. Therefore, the price of general sunglasses is relatively cheaper than polarizers.

In fact, polarizers are also considered to be a category of sunglasses, but polarizers are a relatively high-end category of sunglasses. Polarizers have an effect that ordinary sunglasses do not have. This effect effectively blocks and filters out all kinds of polarized light that are harmful to the eyes.

The so-called polarized light is the irregular reflection of light generated when light passes through uneven roads, water surfaces, etc., also called glare. When these rays of light directly irradiate people's eyes, it will make people's eyes feel uncomfortable and easily fatigued, and cannot see objects for a long time, and the clarity of the objects they see is obviously not enough.

The polarizer uses the linear molecular arrangement inside its lens to filter and exclude all kinds of glare that damage the eyes, that is, the polarizer passes through the linear molecular arrangement in its lens to reflect those irregular reflections. The light has been combed again, and the light thrown into the eyes is clearer and more natural.

The main purpose of the polarizer

The main purpose of polarizers is to protect the eyes from damage under certain conditions. However, for people who are not very demanding, ordinary sunglasses can be used, because the price of polarized sunglasses is slightly higher than that of ordinary sunglasses.

Of course, if you are a car owner who needs to drive, it is better to wear polarized sunglasses when driving, because driving often encounters various glare, polarized sunglasses can block part of the glare, and can also filter out the ground or The strong light reflected from the opposite car body makes the field of vision clearer, reduces visual fatigue, and is conducive to safe driving.

Special reminder: For friends who often engage in outdoor sports such as fishing, skiing, and vacations, it is more appropriate to wear polarized glasses.