u003cbru003eThe color of glasses
The color of the lens is best in light gray or light smoke, because it is a pure color. Followed by green, amber or yellow, blue. Red is only suitable for special work, and dark-colored lenses are suitable for sunbathing or snow. According to the claims of the Illinois Blindness Prevention Union in the United States: the best colors for sunglasses are smoky gray and green. These colors of sunglasses can reduce the sensitivity of the color to a minimum. Wearing pink, yellow, orange, red, and violet sunglasses can cause excessive eye fatigue. Under strong sunlight, fatigue can cause blurred vision. As a result of this claim, many airplane and car drivers began to switch to smoky gray and green sunglasses. 1. Lens color types and their respective characteristics (1) Gray lens: Gray lens can absorb any color spectrum evenly, so the scene will only become darker, but there will be no obvious chromatic aberration, showing a real and natural feeling. It belongs to the neutral color system. (2) The brown lenses filter out a large amount of blue light, which can improve the visual contrast and clarity, and the effect is better when worn under severe air pollution or foggy conditions. (3) The green lens greatly increases the green light reaching the eyes while absorbing light, so it has a cool and comfortable feeling and is suitable for people who are prone to eye fatigue. (4) Blue-gray lenses are similar to gray lenses and belong to neutral lenses, but the color is darker and the visible light absorption rate is higher. (5) The surface of mercury lens adopts high-density mirror coating. Such lenses absorb more reflected visible light and are suitable for outdoor sports people. (6) Strictly speaking, this type of lens is not a sunglasses lens, because it hardly reduces visible light, but in foggy and twilight hours, yellow lens can improve the contrast and provide more accurate vision, so it is also called night glass. Some young people wear 'sunglasses' with yellow lenses as decoration. (7) Light blue and light pink lenses are also more decorative than practical lenses. 2. The color depth of the lens The color depth of the lens only affects the visible light absorption performance, and has nothing to do with the anti-ultraviolet ability. Because ultraviolet light is invisible, the anti-ultraviolet ability depends on the lens material, not the color depth. Some resin sheets are colorless and transparent, but still can 100% UV resistant. Some sunglasses are made of progressive color resin lenses, that is, the upper and lower depths are shallow, until they are close to colorless. Such sunglasses can block sunlight from the upper and the front when worn outdoors, and can still look close indoors or in the car. If the light-colored progressive color is worn by middle-aged women, it will have a good decorative effect.
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