Jiangsu Aogang Optical Glasses Co., Ltd.
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CR39 1.499 Flat-top White Prescription Optical Lenses Without Coating For Bifocal Vision
I. Specifications:
| Production | 1.499 FT-28 UC LENS |
| Monomer | CR39 |
| Diameter | 70mm |
| Abbe Value | 57 |
| Specific Gravity | 1.33 |
| Transmission | >96% |
| Flat top segment | 28mm |
| Guarantee years | 3~5 years |
| Power range | SPH: 0.00~+-3.00 ADD: +1.00~+3.50 |
II. Flat Top Bifocal Lens:
Bifocals have the unique ability to give two lens powers so that you can see both near and far. The bottom portion of the lens is used for seeing up close like with reading or computer work. The top portion is for distance but some people do not need it so sometimes that portion has no prescription in it at all. It will vary with each person.
Flat top 28 bifocals are still bifocals but a little different in how they are created. These lenses are also called straight top lenses and how they work is that they are a fused bifocal. These have a D-shaped near segment that has a 90 degree rotation which makes the D face upwards. Another reason they are called flat-top 28 bifocals is that the near seg is 28mm wide, which makes it easy to remember. These are the most popular flat top bifocals. |  |
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. 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 | |
V. Our factory:
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 .