High Index 1.74 ASP UV400 Protection Semi Finished Lens Blanks With Uncoating For High Power
I. Techinical Data:
| 1.74 High Index Semi Finished Aspherical Lens |
| Material: 1.74 Index Resin(Ne=1.738, Abbe value=32, Specific gracity=1.47) |
| CONVEX SURFACE | CONCAVE SURFACE | | | |
| Mominal Curve | True Curve | Sag(sagitta: 40mm) | Sag(sagitta: 50mm) | Radius | Radius | CT(mm) | ET(mm) | Dia(mm) |
| 1.738 | 1.530 |
| 0.50 | 0.42 | 0.30 | 0.114 | 0.18 | 1,757.14 | 62.74 | 5.00 | 14.9 | 70 |
| 1.00 | 0.84 | 0.60 | 0.227 | 0.36 | 878.60 | 103.60 | 5.00 | 10.8 | 75 |
| 2.00 | 1.88 | 1.35 | 0.508 | 0.79 | 392.75 | 111.52 | 5.00 | 9.5 |
| 3.00 | 2.87 | 2.06 | 0.775 | 1.21 | 256.80 | 135.88 | 5.00 | 7.6 |
| 4.00 | 3.93 | 2.82 | 1.060 | 1.66 | 187.68 | 121.07 | 5.50 | 7.6 |
| 5.00 | 4.97 | 3.57 | 1.339 | 2.10 | 148.49 | 124.88 | 6.00 | 7.2 |
| 6.00 | 5.95 | 4.27 | 1.603 | 2.51 | 124.03 | 6.50 | 6.6 |
| 7.00 | 7.08 | 5.08 | 1.909 | 3.00 | 104.24 | 7.00 | 6.2 | 70 |
| 8.00 | 8.03 | 5.77 | 2.166 | 3.41 | 91.91 | 7.50 | 5.7 |
| 9.00 | 8.99 | 6.46 | 2.428 | 3.83 | 82.09 | 166.97 | 8.50 | 4.8 |
| 10.00 | 10.12 | 7.27 | 2.738 | 4.32 | 72.92 | 9.50 | 4.7 |
II. Features:
| ----Semi Finished Lens. The starting point for freeform production is a semi-finished lens, also known as a puck due to its resemblance to an ice hockey puck. These are produced in a casting process that is also used to manufacture stock lenses. The semi-finished lenses are produced in a casting process. Here, liquid monomers are first poured into moulds. Various substances are added to the monomers, e.g. initiators and UV absorbers. The initiator triggers a chemical reaction that leads to hardening or "curing" of the lens, while the UV absorber increases the UV absorption of the lenses and prevents yellowing. |  |
---- 1.74 index lens.
1). Impact resistance: 1.74 high index lenses meet FDA standard, can pass the falling spere test, have higher resistance to scratches and impact
2). Design: It approaches flat base curve, can offer people amazing visual comfort and aesthetic appeal
3). UV protection: 1.74 single vision lenses have UV400 protection, that means full protection against UV rays, including UVA and UVB, protect your eyes everytime and everywhere.
 | 4) Higher index lenses bend light at a steeper angle than lesser index versions. The ‘index’ is the result given as a number: 1.56,1.61,1.67 or 1.74 and the higher the number, the more light is bent or 'slowed down'. Therefore, these lenses have less curvature for the same focal power requiring less lens substance/material. |
5). Aspherical shape: Aspherical lenses are thinner and lighter than spherical lenses, relieving the visual fatigue caused by oppression effectively. In addition, they also can reduce aberration and distortion, give people more comfortable visual effect.
6). Super Hydrophobic Coating: It also called crazil coating, can make the surface of the lenses super hydrophobic, smudge resistance, anti static, anti scratch, reflection and oil, etc.
III. Our company file:
IV. 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. Why Choose Us:
| 1 | 1) If you need the samples, we will check the samples fee and the shipping cost, and we will delivery the samples to you in three days after we receive the payment. 2) If you do not need the samples, we can send the price list to you. |
| 2 | If you are satisfied with our samples or the price list, you can show us your order list. |
| 3 | We will do a proforma invoice which show you the total cost including the goods fee, shipping cost, the size of the lenses and some other important information. |
| 4 | We will start the order when we receive your despoit, the 30% of the total cost. |
| 5 | We need about 15~40 days to produce the order which up to your quantity, and keep update the producing process to you in time. |
| 6 | When we finish the producing, we will inform you to pay for the rest of the money. And we will delivery to you asap when we receive the balance. |
| 7 | We will offer the tracking number and the documents for you to clearance at customs. |
Product Tags:
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UV400 Protection 1.74 High Index Lenses , Uncoated Eyeglass Lens Blanks For High Power Images
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