During driving, the driver will receive reflected light and glare (such as water surface glare and light glare) from various objects on the road or in front of him. The driving mirror can filter out unnecessary light, make the vision clearer and drive safer. According to the transmission score, driving mirrors are divided into daily mirrors and night vision mirrors.
Generally, it can be divided into daily use type and night use type. The daily use type refers to the glasses that can prevent glare and strong light, and the lens color is mostly dark, such as gray, tea, grey green and other colors. The light transmittance of the daily use lens is more than 8%. The night use type generally refers to the glasses that can prevent the glare of the headlights of the opposite vehicles and increase the brightness at the same time, that is to say, they can prevent the light and not block the road surface, and can increase the brightness and sight distance at the same time. The transmittance of night lens is more than 75%. Lens materials are generally divided into resin polarizing, PC polarizing and other types. With the development of science and technology, more and more new materials are used in lens manufacturing, such as nylon lens, NXT lens, nano polarized lens, etc. The production of professional driving glasses must conform to the standard of motor vehicle driver's glasses of the people's Republic of China (qb2659), rather than the standard of sunglasses (qb2457 and gb10810.3).
