1）The feature of CR39 lens ①The better among other index lenses in hardness and toughness , high impact resistance . ②The more easily tinted than other index lenses. ③The higher transmittance as compared with other index lenses . ④The higher ABBE value providing the most comfortable visual experience . ⑤The more reliable and consistent lens product physically and optically . ⑥The more popular in the middle level countries.2）What's the importance of a good semi-finished lens to RX production? ①High qualified rate in power accuracy and stability ② High qualified rate in cosmetics quality ③High optical features ④ Good tinting effects and hard-coating/AR coating results ⑤Realize the maximum production capacity ⑥Punctual delivery Not just superficial quality, semi-finished lenses are more focus on the internal quality, such as precise and stable parameters, especially for the popular freeform lens.
3）What is the difference between HC, HMC and SHC？
| Hard coating | AR coating/Hard multi coating | Super hydrophobic coating |
| makes the uncoated lens hard and increases the abrasion resistance | increases the transmittance of the lens and reduces surface reflections | makes the lens waterproof, antistatic, anti slip and oil resistance |
| 1.60 semi-finished optical lens | |
| Model: | 1.60 optical lens |
| Place of Origin: | Jiangsu, China |
| Brand: | SETO |
| Lenses Material: | Resin |
| Bending | 50B/200B/400B/600B/800B |
| Function | semi-finished |
| Lenses Color | Clear |
| Refractive Index: | 1.60 |
| Diameter: | 70/75 |
| Abbe Value: | 32 |
| Specific Gravity: | 1.26 |
| Transmittance: | >97% |
| Coating Choice: | UC/HC/HMC |
| Coating color | Green |