Correct Way to Open: Cool High Reflection Sunglasses!
1.Is the lens as bright as a mirror and cool? The beach and snow are the only ones that can be used
Consumers wearing sunglasses not only need to ensure that the intensity of the transmitted light is reduced to reduce eye irritation, but also to ensure a certain amount of light transmission, which can effectively distinguish object details and colors. Therefore, whether the transmittance is too high or too low is not in compliance with the requirements. The light projection ratio, traffic signal projection ratio, and signs of some products do not meet the standard requirements, and these unqualified indicators will affect driving safety. The main manifestation is that the hang tag for purchasing sunglasses does not indicate the category and transmittance level of the sunglasses according to the standard requirements. Without this information, consumers cannot choose sunglasses based on their own usage environment. Some high reflection film sunglasses, although labeled as sunshades, indicate that they belong to special purpose sunglasses based on their detected light transmittance. They are only suitable for use in environments with strong light radiation such as snow, desert, and beach, and are not suitable for daily wear, let alone as driving glasses. Some consumers, when choosing sunglasses as driving glasses, will face. serious safety hazards due to their ability to recognize traffic signals.
2.The darker the color, the more UV resistant it is? UV protection function is "standard"
Many consumers have a preference for dark lenses when choosing sunglasses, believing that they can better block ultraviolet rays. Consumers should approach merchant promotion rationally and not pay special attention to the indicator of UV protection. The choice of shade for sunglasses lenses should depend on the location of the desired activity. Sunglasses should be able to effectively block strong summer light, and the color of the glasses should have a certain depth. However, for cyclists or drivers, do not choose lenses that are too dark in color. As a driving mirror, it is necessary to choose Class 2 sun visors or light colored sunglasses with slightly lighter colors, so as to meet the driving requirements in various environmental changes.
How to choose? Learn the transmittance level first
The transmittance index of sunglasses directly affects the safety of the wearer while driving, so let's first learn about transmittance. According to the standard, the transmittance of sunglasses is divided into four levels, and the higher the level, the higher the light blocking rate. The usual categories of sunglasses are: light colored sunglasses, sunshades, and special purpose sunglasses. Light colored sunglasses have a transmittance level of Class 1, and the lens color is the lightest, suitable for most daily life. Sunvisors include transmittance level 2 and transmittance level 3, with relatively dark lenses that are only used in strong sunlight, especially in scorching summer environments. Special purpose sunglasses have a transmittance level of 4, with the darkest lens color, and are only suitable for use in skiing, deserts, beaches, and other situations.
Knowing the meaning represented by different transmittance ratios, when choosing sunglasses, you can choose different categories of sunglasses according to your actual needs. Currently, among the sunglasses sold in the market, if the logo is qualified, it will indicate three categories: light colored sunglasses, sunshades, and special purpose sunglasses. Light colored sunglasses are suitable for when the sunlight is not strong; Sunvisors can block most of the strong sunlight; If you are preparing to go skiing, beach, desert and other strong sunlight conditions, you can choose special purpose sunglasses, but these sunglasses are only suitable for use when the sunlight is particularly strong. Once you enter a dark indoor environment, immediately remove the sunglasses, and these sunglasses are also not suitable for driving.
For sunglasses, the most important thing is that the color of the lenses should not have any deviation and should not cause color distortion in the surrounding environment. How should consumers judge the quality of a pair of sunglasses? Before wearing sunglasses, observe objects in red, green, yellow, and other colors. Then, wear sunglasses and observe the same object. The colors observed twice should not be biased, otherwise it will reduce the ability to recognize traffic signals.
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