In recent years, with the concept of low-carbon, healthy life deeply rooted in the people's mind, cycling also shows a rapid growth trend. As an important equipment in cycling, sports riding goggles, like helmets, have become a must for more and more cycling enthusiasts. Sports riding mirror can not only effectively prevent the accidental injury caused by mosquitoes and flying sand during riding, but also effectively prevent ultraviolet rays and improve the visual effect, so as to improve the riding comfort. Now follow 360 common sense net to understand!
Many riders tend to choose sports glasses with polarized function when they choose sports cycling glasses. I've asked many cycling enthusiasts about the reasons. The answers are mainly as follows: anti ultraviolet (functional), more comfortable (comfortable) than other lenses, and better polarizers (reputation of riders).
Basic principle of polarizer
Polarizers use the principle of light polarization. We know that when sunlight is projected on the road or water surface, it directly stimulates the eyes, making them feel dazzled, tired and unable to see things for a long time. The function of the polarizer is to effectively eliminate and filter the scattered light in the beam, so that the light can be put into the visual image of the eye on the right light transmission axis, so that the field of vision is clear and natural. Just like the principle of blinds, the light is adjusted into the same direction and enters the room, naturally making the scenery look soft without dazzling.
Under what conditions do polarizers need to be used?
Polarizers don't only need to be worn in summer, they actually have to be used all year round. Wear it on a sunny day and on a cloudy day. Don't think that the sun is not strong and the weather is not hot in overcast days, so take it lightly, and unconsciously, it will irradiate more harmful ultraviolet rays. Just because the sun is not strong doesn't mean it won't hurt your eyes, and riding glasses can also prevent wind, sand and insects, so it's better to wear them.
How to choose a qualified polarizer?
1. First consideration of quality: the primary function of polarizer is to prevent ultraviolet and filter polarized light. A good polarizer lens can block more than 90% of UV penetration. You can choose a polarizer with the "UV400" logo to block the best ultraviolet rays; poor polarizers, such as dark ones, will increase the size of the pupil as the light entering the human eye darkens, and the UV light entering the eye will increase, increasing the damage to the eyes.
2. Real and natural vision: the color selection of polarizing lens shall be based on the principle that the color of the surrounding environment is not distorted, the edge of the object is clear and can effectively identify different color signal lamps. Especially as a polarizer for riding, it can ensure riding safety. The color of the lenses is gray, brown and green, because the lenses with these colors absorb infrared and ultraviolet rays well, which can improve the visual contrast and clarity, especially in the case of severe air pollution or foggy conditions.
3. Correct processing: the light barrier function of polarizing lens comes from the polarizing film in the lens, just like the louver in our home. If the louver assembly is not horizontal, people outside the window can easily see the scenery in the house through the louver. At present, the latest standard related to polarizers in China is QB 2659-2004 about the axial position deviation of polarizing lenses. The specific description is as follows: the axial position of polarizing lenses installed behind the frame should be in the horizontal direction, and the deviation should not exceed ± 5 ° and the mutual difference between the two lenses should not exceed 6 °. That is to say, the horizontal deviation of each lens shall not exceed 5 ° and the sum of absolute deviation values of two lenses shall not exceed 6 °. Otherwise, the effect of the lens is greatly reduced, even worse than the ordinary PC sports lens.
Of course, the polarizing lenses used in sports glasses also have a lot to do with the process of the lenses themselves, such as TAC (sandwich) type polarizing lenses, PC (polycarbonate) integrated polarizing lenses, nylon (nylon) polarizing lenses, NXT color changing polarizing lenses and many other types, with different processes and different prices. You can choose the one that suits you in your ability~
The difference between ordinary sunglasses and riding glasses
If you are sweating, you will find that there is a clear difference between ordinary sunglasses and cycling glasses. The heat your body sends out will atomize a pair of ordinary sunglasses, and your sweat will make the ordinary Sunglasses slide or even fall. But the rubber non slip nose bracket of riding glasses will ensure that your glasses are firmly on your face, and even if you are more active, they will not slide down. Recently, more and more high-end riding glasses will add air vents between lenses and frames, making them cooler and more comfortable to use, without fogging!