Uncoated 1.499 Flat-top UC Prescription Eyeglass Lenses For Far And Near Vision
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
● Why need the bofical lenses?
The aging process includes changes in vision that makes everyday reading more difficult than usual because of the loss of one’s ability to focus naturally. This condition is called presbyopia. It is often relieved by wearing special reading glasses. People who have been wearing prescription eyeglasses because of nearsightedness or farsightedness will need bifocals or eyeglasses with two different lens powers to help them see objects at different distances.
| Bifocals have two different lens powers that aid in seeing objects at various distances once the aging process reduces your ability to do so. These are usually prescribed to adults older than 40 years, although some children and younger adults may also need them for focusing problems, which strain the eyes while reading. |  |
● The advantages of the bifocal lenses.
Some presbyopes opt for progressive multifocal lenses, which gradually change powers from the top portion to the bottom of the lens, without lines to separate them. However, conventional bifocals offer some advantage over progressive lenses, such as providing wider lenses for computer work and reading compared to progressive lenses. Special purpose bifocals are also available for computer work and other tasks requiring powerful near and intermediate vision.
 | Bifocals have two different lens powers that aid in seeing objects at various distances once the aging process reduces your ability to do so. These are usually prescribed to adults older than 40 years, although some children and younger adults may also need them for focusing problems, which strain the eyes while reading. |
III. Technical Data
IV. The production of the UC
V. Packing & Shipping
| Envelope | Carton | Lenses Pair | Size | Weight | Lead Time |
| Choice 1 | White Envelope | Stand Export Carton | Finished optical lens: 1 pcs/envelope, 500 pairs/carton | 38*48*35 cm | 21 KG | Depend on the order quantity |
| Choice 2 | Your design with your logo | Semi-finished optical lens: 1 pcs/envelope, 100 pairs/carton | 15 KG |
| Carrier | We can choose for you or you offer us your cooperative company |
| Payment terms | 30% T/T in advance, the balance before shipment |
| All the numbers provided above are estimated number, the actual number 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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UC Coating Flat Top Bifocal Lenses 1.499 Index Over 97% Transmission Images
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