What is a polarizer?
Polarizers are manufactured based on the principle of polarization of light. We know that when the sun is projected on the road or on the water, it directly irritates the eyes, making the eyes feel dazzled, tired, and not looking good. Especially when you are driving a car and doing outdoor recreation, it not only affects our work and entertainment emotions, but also affects our judgment on the object and causes danger; long-term exposure to direct sunlight can cause a sharp drop in vision. Form myopia, hyperopia, astigmatism or cataracts.
What is sunglasses?
Also known as a sun visor for shading. In the sun, people usually adjust the pupil size to adjust the luminous flux. When the light intensity exceeds the eye's ability to adjust, it will cause harm to the human eye. Therefore, in outdoor activities, especially in the summer, sunshades are needed to block the sunlight to reduce the fatigue caused by eye adjustment or the damage caused by strong light stimulation.
The difference between polarizer and sunglasses
1. Different effects
Ordinary sunglasses take all the light into the eye by dyeing the dyed color on the dyed lens, but all glare, refracted light and scattered light enter the eye and cannot achieve eye-catching.
One of the functions of polarized lenses is to filter out glare, scattered light, and refracted light, and absorb only the reflected light of the object itself, presenting what is actually seen, allowing the driver to improve vision, reduce fatigue, increase color saturation, and have clearer vision. It plays the role of keeping eye and eye protection.
2. Different principles
Ordinary dyed lenses use their dyeing to block all light. The objects they see change the original color of the object, what color the lens is, and what color the object is covered. In particular, wearing it to drive, the recognition of the traffic lights produced a huge color difference, and the green light is not recognized. Become a traffic hazard.
The polarizer is the principle of polarized light, and the object seen does not change color. When the vehicle is driving at a high speed, after entering the tunnel, the light in front of the ordinary sunglasses is immediately dimmed, and the road ahead is severely invisible, and the polarizer does not affect.
3. The degree of blocking UV rays is different
Strong ultraviolet light is the invisible killer of human beings. The polarizer is born for this purpose. The blocking rate of ultraviolet light is 99%, and the blocking rate of ordinary dyed lenses is quite low.
Which is better for polarizers and sunglasses?
Sunglasses are known and known because they are resistant to ultraviolet light. The polarizer is even more powerful than sunglasses. It is more resistant to ultraviolet light. More importantly, it can resist glare and give the eyes a clear view. You can say that you can travel and drive. The polarizer is definitely good for you. helper. Compared with the polarizer, ordinary sunglasses can only reduce the intensity of light, and can not effectively remove the reflection of the bright surface and the glare in all directions; in addition to the UV protection and the reduction of the intensity of the light, the polarizer can effectively filter the glare.
So in summary, short-term activities such as going out for entertainment can choose sunglasses. For long-term driving, entertainment and other activities, it is best to choose a more powerful polarizer, but polarizers are generally more expensive than sunglasses, depending on everyone. In terms of consumption level, in short, you must choose to wear your own glasses with comfort.