Views:13 Author:Site Editor Publish Time: 09-16-2019 Origin:Site
The user can test the lens if it is polarized function with the test card.
The user can use the card which packed with cycling sunglasses to check the lens of the sunglasses if it is polarized or not.
The user can not see the fish on the test card before they wearing the polarized lens sunglasses, but they can see the fish after they wearing the polarized lens sunglasses clearly.
Ultraviolet-proof test.
We can know if the lens with UV400 function after testing with the testing instrument.
Before testing,the lights was showed:UV400 and 188900 all light turn on.
After testing, all the lights turned off and showed UV400, it is the standard UV400.
All the lights turned off
Think about where you will wear them. If you are buying your glasses for a specific sport, such as cycling, this should be easy for you
If you motorcycle frequently you should definitely get prescription motorcycle sunglasses or goggles—luckily, we're here to help you narrow down the one that suits you best.
Aside from your helmet, goggles are one of the most important pieces of riding gear you wear.
The U.S. Military issued rigorous ballistic tests that protective eyewear worn by military personnel have to pass.
A low VLT number such as 15 percent means less eye fatigue on sunny days. And a high VLT number such as 70 percent means better color and depth perception on low-light days.
The single most important thing to look for when buying casual sunglasses to protect your eyes is a sticker or tag indicating that they block 100 percent of UV rays.
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