CR39 1.499 Uncoated Flat Top Bifocal Lenses In Semi Finished Lens Blanks
I. Technical Data:
| 1.499 S/F FLAT TOP BIFOCAL BLANKS |
| MARTERIAL REFRACTIVE INDEX=1.499 TOOLING INDEX=1.530 |
| Diameter(mm) | Nominal
Curve | Front
Radius | T.C | Back
Radius | BACK
T.C | CT/ET | Frong sag
Ring 50mm | RX Range
Recommended |
| ɸ70 | 200B | 234.27 | 2.26 | 94.93 | 5.58 | 10.0/14.0 | 1.34 | -5.25Dto-8.00D |
| ɸ70 | 400B | 127.62 | 4.15 | 94.93 | 5.58 | 10.0/12.0 | 2.47 | +2.00Dto-5.00 |
| ɸ70 | 600B | 87.18 | 6.08 | 161.04 | 3.29 | 9.0/6.0 | 3.66 | 0.00Dto+4.00D |
| ɸ70 | 800B | 66.49 | 7.97 | 161.04 | 3.29 | 13.0/6.0 | 4.88 | -4.25Dto+6.00D |
II. The classic bifocal product for presbyopes:
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.
- As their name suggests, bifocal eyeglass lenses have two lens powers — one for distance and one for near.
- The lower half of a bifocal lens contains the near segment for reading and other close-up tasks. The rest of the lens is usually a distance correction, but sometimes has no correction at all in it, if you have good distance vision.
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 | - When people inch closer to forty, they may find that their eyes are not adjusting to distances as they used to, the lens of the eyes begin to lose flexibility. It becomes difficult to focus on close objects. This condition is called presbyopia. It can be managed to a large extent with the use of bifocals.
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III. Benefits of flat top bifocal lenses for wearer:
- Two different segment sizes to meet individual requirements
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- Reduced reflections due to curved segment top
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- Segment fusing or molding on front surface and inner toric surface design ensure excellent optical quality and cosmetically attractive lenses
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- Wide selection available: various material, photochromic bifocal lenses and sunglass lenses
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- Aogang bifocals are made from one of the highest quality materials, in Uncoated, Hard-Coated and Hard-Multi-Coated varieties.
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IV. Factory Pictures:
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. Our service:
1. Our Customer service will begin to track the product processing every day until you receive the goods and verify the product quality when you finish the payment.
2. Online via SKYPE,Whatsapp;Also through mail, voice phone, message could contact us at any time!
3. Follow up the case, record the entire process. Solution will be provide with 24 hours.
Meanwhile,the problem complaint will be reported to QC department.
QC will find defect from which department ,who is in charge to identify responsibility.
4. Collect and record all the voice from each customer respond , suggestion, requirement.
5. We own the best after-sale service,if any problems happen,our team will do our best to solve for customers.
Product Tags:
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Bifocal Semi Finished Lens Blanks , Flat Top CR39 1.499 Ophthalmic Blanks Images
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