Sunglasses Lens structure – glasses factory

Glasses factory and manufacturer – Stained lenses

The color of sunglasses determines which part of the spectrum the lens can absorb. Glasses factory and manufacturers use different colors to produce specific effects.

1. Gray is a good universal color. It reduces the brightness and has the least color distortion. Grey lenses provide glare protection, making them ideal for driving and general use.
2. Yellow or gold lenses reduce blue light while allowing more light of other frequencies to pass through the lens. Because blue light can bounce and disperse a lot of light, it can produce a glare effect called blue haze. In fact, yellow removes the blue part of the spectrum, making everything bright and clear. That’s why snow blind sunglasses are generally yellow. These colors can distort color perception a little, so sunglasses of these colors are not suitable for activities that require accurate color identification.

Lens product in glasses supplier

3. Amber and Brown are also good universal colors. They reduce the glare effect and, in addition to ultraviolet light, their unique molecules can absorb colors with higher frequencies, such as blue. Studies have shown that long-term exposure to near ultraviolet light (such as blue and purple) is one of the pathogenic factors of cataract. These sunglasses, like yellow lenses, cause color distortion, but increase contrast and clarity.
4. Green lenses can filter out some blue light and reduce glare effect. In all colors of the lens, green lens can provide the highest contrast and maximum visual acuity, so it is very popular.
5. On a green or blue background, purple and rose lenses provide the best object contrast. So they are a good choice for hunting and water skiing.

Many manufacturers of sunglasses use a process called constant density to dye their lenses. This is the oldest Sunglasses manufacturing process, and the entire glass or polycarbonate mixture material has the same color. Therefore, in the process of manufacturing lenses, the color is inside the lens. Coating a layer of light absorbing molecules on the surface of pure polycarbonate is also a dyeing method. The most common way to dye polycarbonate lenses is to immerse the lenses in a special liquid containing dye, which will be slowly absorbed by the plastic. If you want to make the color darker, you just need to extend the time the lens is immersed in the liquid.