CR39 Multifocal Semi Finished Lens Blanks 1.499 Index Progressive AR Coating
CR-39 1.499 Progressive AR Coating Semi Finished Lens Blanks For Multifocal Lens
I. Technical Data:
| CR-39 Semi Finished Progressive(14mm) Lens | |
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Material: CR-39 Index Resin(Ne=1.499, Abbe=58, Specific Gravity=1.32) Add Power: +1.00 to +3.50 in 0.25D steps Corridor Lenghth=14mm |
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| CONVEX SURFACE | CONCAVE SURFACE | |||||||
| Mominal Curve | Actual Curve |
Sag (sagitta: 40mm) |
Sag (sagitta:50mm) |
Radius | Radius | CT(mm) | ET(mm) | Dia(mm) |
| 2.00 | 2.68 | 1.07 | 1.67 | 185.95 | 126.50 | 10.5 | 12.5 | 75 |
| 4.00 | 4.04 | 1.61 | 2.52 | 123.53 | 83.00 | 9.8 | 13.2 | |
| 6.00 | 6.01 | 2.40 | 3.78 | 83.03 | 83.00 | 10.7 | 11.0 | |
| 8.00 | 7.34 | 2.94 | 4.65 | 68.00 | 83.00 | 12.4 |
10.0 |
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Add Prism(Down):
| ADD | 1.00 | 1.25 | 1.50 | 1.75 | 2.00 | 2.25 | 2.50 | 2.75 | 3.00 | 3.25 | 3.50 |
| Prism | 0.66 | 0.83 | 0.99 | 1.16 | 1.32 | 1.49 | 1.65 | 1.82 | 1.98 | 2.15 | 2.31 |
Prescription Range:
| Nominal Base Curve | Recommended Diopter in Base | Cylinder |
| 2.00 | -10.00 to -4.25 | 0~-6.00 |
| 4.00 | -4.00 to +2.00 | 0~-6.00 |
| 6.00 | +2.25 to +4.50 | 0~-6.00 |
| 8.00 | +4.75 to +7.00 | 0~-6.00 |
II. Progressive lens:
- What are progressive lens?
Progressive lenses offer no-line, multi-focal viewing zones for the most convenient vision correction. If you are over 40 and having difficulty with your vision, chances are you are experiencing presbyopia, the common gradual loss of near vision. But there is good news: you have more choices today than ever before. You don't have to carry a separate pair of glasses for reading or wear lined bifocal lenses like your parents did. Now, you can have no line bifocal reading glasses.
| Progressive lenses offer a smooth transition from distance vision through intermediate vision to near vision, and they supply all the in-between corrections as well. This means that instead of having just two different viewing zones (near and distant), like with bifocals, progressive lenses have progressive powers of correction (from bottom to top), easing eye strain and providing he most natural vision correction. |  |
- Advantages of progressive lens:
- Natural, clear and balanced vision from far to near
- Low astigmatism provides visual comfort and easy adaptation
- Larger far zone and comfortable reading zone
III. AR Coating:
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The most important benefits of anti-reflective (AR) coating may be the unseen advantage–relief from fatigue and eyestrain caused by glare. AR does have a big cosmetic advantage, but removing the distracting reflections and ghost images that contribute to eyestrain clearly is a bigger benefit. Being more comfortable in anything we do is a benefit, especially when wearing glasses.
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IV. Packing&Shipping:
| Envelop | Choice 1 | Choice 2 |
| White envelop |
color envelop with customer design weight: 157g size: 9*9*9cm |
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| Outer box | standard export paper carton 38cm*48cm*35cm(0.064 CBMS) | |
| about 500 pairs of finished lenses per carton, 21kgs | about 100 pairs of semi-finished lensesper carton, 15kgs | |
| Lead time | Depend on the quantity | |
| Carrier | We can choose for you or offer us your cooperative company | |
| Payment terms | 30% T/T in advance, the balance before shippment | |
V. Our production equipment and warehouse:
VI. FAQ:
1. Are your company a manufacturer or a trade company?
We are a manufacturer with many years exporting experience. Our factory is located in Jiangsu province.
2. How can I get sample from you?
Just send us your requirements, then we will send samples accordingly.
3. Can your products be customized?
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. How many days will samples be finished? How about mass products?
Generally, we need 5-7 days to finish the sample production.
As for the mass products, it depends on your order quantity.
5. Do you have stock products to sell?
Yes.We have a lot of inventory.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.