CR39 White 1.499 Flat-top Uncoated Prescription Eyeglass Lenses For Bifocal Vision Without coating
I. Specifications:
| Production | 1.499 FT-28 UC |
| Monomer | CR39 |
| Diameter | 70MM |
| Abbe value | 58 |
| Specific Gravity | 1.32 |
| Transmission | >97% |
| Flat top segment | 28 |
| Guarantee years | 5 years |
| Power range | SPH: 0.00~+-20.00 CYL: 0.00~-6.00 |
II. Features:
● CR-39 lenses use the imported CR-39 raw monomer, which is one of the longest history of resin materials and the most widely sold lens in middle level country.
1) Hardness: The better other 1.56/1.61/1.67/1.74 index lenses in hardness and toughness, high impact resistance.
2) Tintable: The more easily tinted than 1.56/1.61/1.67/1.74 index lenses.
3) Transmittance: The higher transmittance as compared with other 1.56/1.61/1.67/1.74 index lenses.
4) ABBE: The higher ABBE value providing the most comfortable vision.
● The advantage of the FT bifocal lens.
| 1) This is a very convenient type of lens that allows the wearer to focus on objects both at close range and far range through a single lens. 2)This type of lens is designed to enable viewing of objects in the distance, at close range and in the intermediate distance with corresponding changes in power for each distance. |  |
● How bifocal lens work?
 | Bifocal lenses are perfect for people suffering from presbyopia- a condition in which a person experiences blurred or distorted near vision while reading a book. To correct this problem of distant and near vision, bifocal lenses are used. They feature two distinct areas of vision correction, differentiated by a line across the lenses. The top area of the lens is used for seeing distant objects while the bottom part corrects the near-vision |
III. Technical Data:
IV. Producing Process:
V. Packing&Shipping:
| Envelop |
| Choice 1 | Choice 2 |
| White envelop | color envelop with customer design weight: 157g size: 9*9*9cm |
| Outer box |
| standard export paper carton 38cm*48cm*35cm(0.064 CBMS) |
| Finished lens | Semi-finished lens |
| about 500 pairsper carton, 21kgs | about 100 pairs per carton, 15kgs |
| Lead time |
| Depend on the quantity |
| Carrier |
| We can choose for you or offer us your cooperative company |
| All the numbers provided above are estimated number,the actual numbers need to be measured according to the order you make |
VI. FAQ:
1. Q: Are your company a manufacturer or a trade company?
A: We are a manufacturer with many years exporting experience. Our factory is located in Jiangsu province.
2. Q: How can I get sample from you ?
A: Just send us your requirements , then we will send samples accordingly .
3. Q: Can your products be customized?
A: We accept OEM &ODM orders. Actually most of our products are customized. We will try our best to fulfill your requirements about the material, the size, the printing.
4. Q: How many days will samples be finished? How about mass products?
A: Generally, we need 5-7 days to finish the sample production.
As for the mass products, it depends on your order quantity.
5. Q: Do you have stock products to sell?
A: Yes.We have a lot of inventory .
Product Tags:
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White 1.499 Index Flat Top Bifocal Lenses Without Coating CR39 Material Images
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