[Guide] For many people, sunglasses are one of the indispensable weapons in summer. Whether you are going to the beach for swimming or going for an outdoor outing, wearing a pair of chic sunglasses will make you more fashionable.
So what is the difference between polarized vs non polarized sunglasses? How to tell if sunglasses are polarized? Gogogo, let us continue to look down together!
Especially in summer, to better protect their eyes and avoid being damaged by the sun's ultraviolet rays, people will buy glasses to block the light and prevent ultraviolet rays. Sunglasses and polarized lenses are the types we choose. So, what is the difference between normal sunglasses and polarized sunglasses?
The difference between polarized sunglasses and non polarized sunglasses
Even though many sunglasses brands have launched polarized sunglasses, many friends still don’t know the difference between polarized and non-polarized sunglasses! So, do you know the difference between polarized and non-polarized sunglasses?
Non-polarized sunglasses generally only have the two basic functions of shielding strong light and filtering ultraviolet rays, thus their efficiency in filtering ultraviolet rays is relatively low. But do you know that in our daily life, in addition to strong light and ultraviolet light, the light will generate irregular diffuse reflections by passing through uneven roads, water surfaces, which will cause blurred vision and eye fatigue.
What does polarized sunglasses mean? Polarized sunglasses can filter out this kind of light, only absorb the reflected light of the object itself, and truly present what you see, making the field of vision clearer, thereby reducing visual fatigue. In addition, because of its high-efficiency filter layer, polarized sunglasses have a blocking rate of 99% against ultraviolet rays, which can effectively reduce the damage of ultraviolet rays to the eyes.
It is not difficult for us to find out: in the final analysis, polarized sunglasses are a kind of sunglasses, but it has an extra function to filter out the glare. In our daily life, if we are in an environment with more glare, we can choose this kind of polarized sunglasses, to better protect our eyes and avoid being damaged by strong light. One of the functional differences between polarized sunglasses and non-polarized sunglasses is whether they can block and filter glare.
In terms of function, the difference between polarized sunglasses and normal sunglasses is that the former can directly filter out the strong scattering of glare, while normal sunglasses only use the dimming effect of colors to reduce the strength of the sun's ultraviolet rays with other harmful rays a bit. It has a weakening effect, but it cannot completely block the harmful light to the eyes.
How to distinguish if sunglasses are polarized?
How do we distinguish between polarized sunglasses and non-polarized sunglasses? As long as we stack the polarized lens and non-polarized lens together vertically, when light transmission occurs, then they are non-polarized sunglasses. The polarized lens has a special design that only allows parallel light to pass through the lens, so it will not transmit light when the lens is stacked vertically. If there is a phenomenon of opaque, then it belongs to polarized sunglasses.
Another way to distinguish is to rotate the sunglasses 45° clockwise upwards. If the color of the lens changes at this time, and the color of the sunglasses returns to normal after turning the sunglasses back to the original position, then it can be judged that the sunglasses are polarized. And if you can’t see the change in the color of the sunglasses lens no matter how you turn it, then you can judge that the sunglasses are not polarized.
Which is better? Polarized vs Non-Polarized Sunglasses
Since sunglasses distinguish between polarized and non-polarized lenses, so how do select them?
People usually adjust the light flux by adjusting the size of their pupils in the sun, and when the light intensity exceeds the adjustment ability of the human eyes, it will cause damage to the human eyes. Therefore, when outdoor activities are in summer, many people will wear a pair of sunglasses to reduce the damage to the eyes caused by the glare.
Generally speaking, for outdoor sports in a short time, non-polarized sunglasses can already hold your needs. And if you are driving, fishing, traveling, skiing, we suggest that you can choose more powerful polarized sunglasses! Because polarized sunglasses have polarizing properties, they can perfectly protect your eyes when you are active for a long time under strong light.
What is the role of polarized sunglasses?
Polarized sunglasses are a new type of sunglasses derived from more and more people's needs. Many driving friends will buy a pair of polarized sunglasses for themselves. So what is the role of polarized sunglasses?
Before introducing the role of polarized sunglasses, let's first get to know the light in our lives. In our daily life, in addition to strong light and ultraviolet light, when light passes through uneven roads, water surfaces, and other places, irregular diffuse reflection light, that is, glare.
The appearance of glare can make the human eyes feel discomfort and fatigue, and affect the clarity of viewing objects, and bring a lot of trouble to people's life and travel, especially driving drivers, it is deeply affected.
At this time, there is a place for polarized sunglasses. 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. Hence, polarized sunglasses can improve people's vision, reduce eye fatigue, and thus play a role in eye protection. In addition, polarized sunglasses can also block all the ultraviolet rays, so that the eyes are free from the damage of ultraviolet rays.
How to buy polarized sunglasses?
After knowing the benefits of polarized sunglasses, you can decide it was time to start with a pair of polarized sunglasses. So, do you know how to buy polarized sunglasses? Come on Mark!
1. Be sure to choose high-quality polarized sunglasses. Good polarized sunglasses can completely block ultraviolet rays.
2. When choosing polarized sunglasses, you should also follow the principle of non-distortion of the surrounding environment color, clear edges of the object, and the ability to effectively identify different color signal lights.
3. Before buying polarized sunglasses, remember to try them on to determine if you feel unwell, dizzy, have a headache, dry or tingling eyes.
4. When choosing polarized sunglasses, you should also pay attention to the protective function of the frame. High-quality polarized sunglasses frames curve perfectly around your ears, which can effectively prevent foreign objects from irritating the eyes during outdoor sports.