Polarized sunglasses vs. non-polarized sunglasses
“As summer approaches, ultraviolet rays become more and more intense, and sunglasses have become a must-have protective item.”
The naked eye cannot see any difference between ordinary sunglasses and polarized sunglasses in appearance, while ordinary sunglasses can only reduce the intensity of light and cannot effectively remove bright reflections and glare from all directions.
Polarized sunglasses, because of their polarizing properties, can completely block dazzling glare caused by various factors such as scattering, refraction, and reflection. It can completely block ultraviolet rays that are harmful to human eyes, so that when people are active under strong light for a long time, the eyes will not get tired easily, achieving the function of truly protecting the eyes, and making things seen more clearly and three-dimensionally.
How polarized sunglasses work
Polarizers are made according to the principle of polarization of light. We know that when the sun is projected on the road or water, it directly stimulates the eyes, making the eyes feel blinding, tired, and unable to see things for long. Especially when you are driving a car, outdoor recreational activities, not only affect our work and entertainment emotions, and even affect our judgment of the image and cause danger; Long-term exposure to direct sunlight can also lead to a rapid decline in vision, resulting in nearsightedness, farsightedness, astigmatism or cataracts.
The special effect of the polarizer is to effectively exclude and filter the scattered light in the beam, so that the field of view is clear and natural. Like the principle of blinds, the light is adjusted to the same direction of light and enter the room, naturally making the scene look soft and not dazzling.
Regular sunglasses
Lenses are dyed lenses or lenses with color-changing functions. Most of them can only block sunlight and ultraviolet rays, but cannot completely bloPolarized sunglassesck harmful rays and cannot protect against glare.
Polarized sunglasses
The lens has the function of polarizing light. On the basis of effectively blocking sunlight and ultraviolet rays, it also has a polarizing film layer that can block light in a certain direction, thereby preventing glare and protecting eyes.
What are the benefits of wearing polarized sunglasses?
It effectively reduces glare and reflected light! Improve vision clarity and comfort. Usage scenarios: highways, asphalt roads, water, rainy days, snowy areas. Suitable for outdoor photography, driving and riding, snow skiing, fishing, swimming, golfing, etc.
How to identify polarized sunglasses?
Verify the polarization function, this can be done by yourself! All it takes is an electronic screen and unknown sunglasses.
Make sure the screen is always on, put the lenses of the sunglasses facing the screen horizontally, observe the brightness of the screen through the lenses, and rotate the unknown sunglasses at the same time.
If you see the screen turning black as the sunglasses rotate, you have polarized sunglasses. This is caused by polarized sunglasses filtering the light emitted by the screen in scattered directions. If there is no change, they are not polarized sunglasses.
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Post time: Sep-12-2023