The Basic Components of Sunglasses

Sunglass serves as shielding our eyes from the sunshine apart from some other decorative purposes. Luminous flux can normally be adjusted by adjusting the size of the pupil when a person is exposed to the sunshine. As the sunshine is so strong that it extends the range of adjustment, it would do harms to our eyes. As a result, we should wear sunglasses outdoors to shield our eyes from the sunshine.

Today, I am going to focus on a brief introduction of the structure of the sunglass.
1. Tinct lens
The color of the lens of the sunglass identifies the range of spectrum. Each color of the lens serves as a specific effect. Usually, the colors of the lens include grey, yellow, amber, brown, green as well as blue. Let us take grey for example. As the most usual color, grey can reduce the brightness of light while losing the real image to the minimum. Additionally, grey lens provides protection from glare, making it the best choice for a driver along his journey.
2. Anti-scratch protective layer
Glass is naturally anti-scratch. For plastic, it is not this case. To solve this problem, sunglass manufacturers developed a series of approaches to coat the lens with a transparent and solid membrane on it. Through ionization techniques, the membrane on the surface of the lens is very thin and wearable.
3. Antireflective coating
Reflected glare is a usual problem for the sunglass. Reflected glare means the light going through the sunglass is reflected at the back of it to your eyes. Therefore, antireflective coating serves as reducing the reflection from the lens. Like anti-scratch protective layer, it is also a thin and solid membrane.
4. Anti-ultraviolet radiation coating
Ultraviolet radiation does the greatest harm for our eyes. A good anti -ultraviolet radiation coating can eliminate all of the ultraviolet radiation, giving your eyes the best protection. The extent to which the sunglass can protect your eyes from ultraviolet radiation is marked on the sunglass label.