The difference between polarized and unpolarized Sunglasses
Even though many sunglasses brands have launched polarized sunglasses, there are still many friends who can't tell the difference between polarized and non-polarized sunglasses! So, do you know the difference between polarized and unpolarized sunglasses?
Polarized sunglasses just like EXLANSS EL-6301 Bamboo Sunglasses can filter out this kind of light, absorb only the reflected light of the object itself, truly present what you see, make the field of vision clearer, and reduce visual fatigue. In addition, due to its high-efficiency filter layer, polarized sunglasses can block 99% of ultraviolet rays, which can effectively reduce the damage of ultraviolet rays to the eyes.
Unpolarized sunglasses generally only have the two basic functions of blocking strong light and filtering ultraviolet rays, and their efficiency in filtering ultraviolet rays is low. But do you know that in our daily life, in addition to strong light and ultraviolet rays, irregular diffuse reflection light will be generated when light passes through uneven roads, water surfaces, etc., which will cause blurred vision and fatigue of human eyes.
The main differences between polarized sunglasses and non-polarized sunglasses are as follows:
1. Different functions
Polarized sunglasses can effectively filter glare, scattered light, and refracted light, only absorb the reflected light of the object itself, and truly present what you see; non-polarized sunglasses generally only have the basic functions of blocking strong light and filtering ultraviolet rays, and filtering ultraviolet rays. of lower efficiency.
2. The principle is different
The principle of polarized sunglasses is to use the linear molecular arrangement inside the lens to filter and eliminate all kinds of glare that damage the eyes; non-polarized sunglasses are ordinary lenses plus very fine metal powder to filter strong light and avoid sunlight. too much to affect the line of sight.
3. Different effects
Polarized sunglasses can improve people's vision, reduce eye fatigue, and can also block ultraviolet rays, so that the eyes are protected from ultraviolet rays; non-polarized sunglasses have no effect on reducing visual fatigue.
The method to judge whether the sunglasses are polarized glasses: Rotate the sunglasses up 45 degrees clockwise, if the color of the lens has changed, after turning the sunglasses back to the original position, the color returns to normal, then it can be judged as polarized sunglasses; if no matter how There is no change in the color of the rotating lenses, which means that they are non-polarized sunglasses.
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The difference between polarizers and sunglasses
What is a polarizer
Polarizer is a lens made according to the polarization principle of light, which is used to exclude and filter the direct light in the beam, so that the light can be put into the visual image of the eye on the light transmission axis of the right track, so as to make the field of vision clear and natural.
What are sunglasses
Sunglasses, also known as sunglasses, are used for shading. People usually adjust the luminous flux by adjusting the pupil size in the sun. When the light intensity exceeds the adjustment ability of the human eye, it will cause damage to the human eye. Therefore, in outdoor activity places, especially in summer, sunshades need to be used to block the sun, so as to reduce the fatigue caused by eye adjustment or the injury caused by strong light stimulation.
The difference between polarizer and sunglasses
Polarizers and sunglasses are different in several aspects: first, they have different functions. Ordinary Sunglasses weaken all light, but glare and refracted light will also enter the eyes. The polarizer will refract the glare and scattered light, only absorb the reflected light of the object itself, reduce the fatigue of the driver's license, increase the color saturation, and play a role in nourishing the eyes. The second is that they block ultraviolet rays in different degrees. The barrier rate of ordinary sunglasses is quite low, while polarizers can reach 99%. Driving requires very strict vision. It is recommended to wear real polarizers to ensure driving safety.
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What are the functions of polarizer
The main uses of polarizers are ski glasses, fishing glasses, polarizing driving glasses, outdoor sports glasses and golf glasses. Polarizers work by selectively filtering light from one direction to reduce the intensity of light in the sky.
When driving, you won't be bothered by the sunlight and many reflections from the vehicle in front; When fishing, the water waves shine in the sunshine, but they don't feel uncomfortable at all, but feel comfortable and carefree; When skiing, you don't have to worry about reflection and ultraviolet rays, and you can glide as much as you like; When it rains, the traffic signs on the rainy road are clearly displayed in front of you; When you are on vacation, you can enjoy the sunshine, beach and leisure time.
The polarizer is composed of a lens body and a rotatable rear seat frame connected with it. The lens body is composed of a grating made of very fine crystal glass. When rotating, the grating of the polarizer blocks the polarized light that is not parallel to it. Therefore, the polarizer can control and select the number of reflected light parallel to it (this reflected light is polarized light). This is why the polarizer can eliminate or weaken the reflection of non-metallic surface. But most polarizers are a little blue. At the same time, part of the non polarized light with the same vibration direction as the polarized light will be blocked when using and shooting. In order to avoid the color of the picture being too dull, it is generally necessary to increase the exposure by more than one gear.
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