BONA Самые популярные оптовые линзы для солнцезащитных очков CR39 с защитой от царапин
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- Supplier: Danyang Bo Na Optical Glasses Co. Ltd.
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Products Description
Item | Base | Coating | Diamater |
1.499 sunglass lens | 2/4/6/8 | UC/HC/HMC/REVO/MIRROR | 70/75/80MM |
Thickness | Brand | Producing time | Monomer |
1.8MM | BONA | 15~20 days | CR39 |
Sunglasses offer protection against excessive exposure to light, including its visible and invisible components.
The most widespread protection is against ultraviolet radiation, which can cause short- term and long-term ocular problems and various forms of eye cancer.
The most widespread protection is against ultraviolet radiation, which can cause short- term and long-term ocular problems and various forms of eye cancer.
1) Not all sunglasses block 100 percent of UV rays. If you're unsure about the level of UV protection your sunglasses provide, take them to your eye doctor or optician for an evaluation. Many eye care professionals have instruments such as
spectrophotometers that can measure the amount of visible light and UV radiation your lenses block. Almost all sunglasses block a portion of HEV rays, but some tints block more blue light than others. Blue-blocking sunglass lenses usually are bronze, copper or reddish-brown in color.
spectrophotometers that can measure the amount of visible light and UV radiation your lenses block. Almost all sunglasses block a portion of HEV rays, but some tints block more blue light than others. Blue-blocking sunglass lenses usually are bronze, copper or reddish-brown in color.
2) Remember to wear sunglasses even when you're in the shade. Although shade reduces your UV and HEV exposure to some degree, your
eyes still will be exposed to UV rays reflected from buildings, roadways and other surfaces.
eyes still will be exposed to UV rays reflected from buildings, roadways and other surfaces.
Hard coating | AR coating/Hard multi coating | Super hydrophobic coating |
make the uncoated lenses are easily subjicted andexposed to scratches | protect the lens effectively from reflection, enhance functional and charity of your vision | make the lenswaterproof, antistatic, anti slip and oil resistance |
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