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Product Description
| 1.59 PC Blue Blcok HMC Optical Lens | |
| Index | 1.59 |
| Diameter | 65/73 mm |
| Monomer | Polycarbonate |
| Specific Gravity | 1.20 |
| Abbe value | 32 |
| Transmission | > 97% |
| Guarantee | 5-year |
| Hard and AR coating for both lens surface, suitable for people who spend a lot working with computer, mobile phone, laptop. Tablet PC | |
Product Features
 | What is blue light? Blue light is a form of visible light with a wavelength in the range from 380nm to 500nm. It has a very short wavelength, and so produces a higher amount of energy. Studies suggest that over time exposure to the blue end of the light spectrum could cause serious long-term damage to eyes. |
Where is blue light? Blue light is actually everywhere. Sources of blue light include the sun, digital screens (TV, computer, laptop, smart phone and tablet), electronic devices, fluorescent and LED lighting. |  |
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