- Packaging Details 1.56 hmc lens packing: envelops packing (For choice): 1)standard white envelops 2)OEM with customer's LOGO, have MOQ requirement cartons: standard cartons:50CM*45CM*33CM(Every carton can include around 500 pairs lens,21KG/CARTON) Port：SHANGHAI
● Polycarbonate lens is a good choice if you play sports, work where your eyeglasses could easily get damaged because it's highly resistant to impact. ● Also it is a good protection for children who are tough on their specs. ● It's lighter than glass lens, making it more comfortable to wear for long periods of time.Index: 1.499, 1.56,1.60, 1.67, 1.71，1.74, 1.76，1.59 PC Polycarbonate 1.Single Vision Lenses 2. Bifocal/Progressive lenses 3. Photochromic Lenses 4. Blue Cut Lenses 5. Sunglasses/Polarized lenses 6. Rx lenses for single vision, bifocal, freeform progressive AR treatment: Anti-fog, Anti-Glare, Anti-virus, IR, AR coating color.| Place of Origin: | Jiangsu, China | Brand Name: | Convox |
| Model Number: | 1.59 SF PC | Lenses Material: | Resin |
| Vision Effect: | Photochromic | Coating: | EMI, HMC |
| Lenses Color: | Clear | Product Name： | 1.59 SF PC POLYCARBONATE HMC |
| Other Name | 1.59 SF PC POLYCARBONATE HMC | Design: | Aspheric |
| Material: | Acrylic | Color: | Clear |
| Multi color: | GREEN | Transmittance: | 98~99% |
| Abrasion Resistance: | 6~8H | HS CODE: | 90015099 |
| Port: | Shanghai |
----Hardness: One of the best quality in hardness and toughness, high impact resistance. ----Transmittance:One of the highest transmittance as compared with other index lenses. ----ABBE: One of the highest ABBE value providing the most comfortable visual experience. ----Consistency: One of the most reliable and consistent lens product physically and optically.
Semi-finished lens is the raw blank used to produce the most individualized RX lens according to thepatient's prescription. Different prescription powers request for different semi-finished lens types or base curves. The semi-finished lenses are produced in a casting process. Here, liquid monomers are first poured into moulds. Various substances are added to the monomers, e.g. initiators and UV absorbers. The initiator triggers a chemical reaction that leads to hardening or "curing" of the lens, while the UV absorber increases the UV absorption of the lenses and prevents yellowing.
What are the advantages and disadvantages of polycarbonate spectacle lenses?
Polycarbonate lenses are made by injection moulding. These lenses have good impact resistance and therefore are ideal for children, sports and industrial purposes. It also has good UV protection and a higher refractive index than CR39. The disadvantages of polycarbonate lenses include the fact that their abrasion resistance is poor, but when an anti scratch coating is added to this the impact resistance is reduced slightly. These types of lenses cannot be tinted easily.