1.49 index lens is an entry-level optical lens primarily made from CR-39 material,This is a standard index, meaning it bends light less efficiently than higher-index options. CR-39 plastic known for excellent optical clarity and good scratch resistance with a coating. It with low chromatic aberration (minimal color fringing), lightweight compared to glass. So it is best for: Low to moderate prescriptions. It's a cost-effective choice for simple, single-vision glasses.
Product specification
| Place of Origin | Jiangsu, China |
| Brand | RISEE/OEM |
| Lenses Material | Resin |
| Lenses Color | Clear |
| Refractive Index | 1.49 |
| Diameter | 55/65/70/75 |
| Abbe Value | 58 |
| Specific Gravity | 1.32 |
| Transmittance | >97 |
| Coating Choice | UC/HC/HMC/SHMC |
| Coating color | Green, Blue, Gold |
| Power Range | SPH: 0.00~-8.00 +0.25~+8.00 CYL: -0.25~-6.00 |
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