Active Member
|
[China]
Address: East of Nongangxiao, Situ Town, Danyang City, Jiangsu Province, China
Contact name:Richard Mao
Jiangsu Aogang Optical Glasses Co., Ltd. |
|
|
Hard coating CR39 1.499 Single VisionSemi Finished Lens Blanks With
Anti Scratch Optical Lens
I. Technical Data:
| CR39 1.499 Semi Finished Lens | ||||||||
| Material: 1.499 Index Resin(Ne=1.50, Abbe value=57, Specific gravity=1.33 ) | ||||||||
Diameter (mm) | Nominal Curve | Front Radius | T.C | Back Radius | BACK T.C | CT/ET | Frong sag Ring (50mm) | RX Range Recommended |
| ɸ70 | 100B | 1921.45 | 0.28 | 87.43 | 6.06 | 8.3/15.5 | 0.16 | -7.25Dto-10.00D |
| ɸ70 | 200B | 265.36 | 2.00 | 102.68 | 5.16 | 8.3/12.0 | 1.18 | -5.25Dto-7.00D |
| ɸ70 | 400B | 130.23 | 4.07 | 102.68 | 5.16 | 9.7/11.0 | 2.42 | +2.00Dto-5.00 |
| ɸ70 | 500B | 105.56 | 5.02 | 139.54 | 3.80 | 8.0/6.5 | 3.00 | +3.00Dto-3.00 |
| ɸ70 | 600B | 87.37 | 6.07 | 139.54 | 3.80 | 10.2/7.8 | 3.65 | 0.00Dto+4.00D |
| ɸ70 | 700B | 76.02 | 6.97 | 139.54 | 3.80 | 10.0/6.0 | 4.23 | +2.00Dto+5.00D |
| ɸ70 | 800B | 64.79 | 8.18 | 90.92 | 5.83 | 9.5/6.8 | 5.02 | +4.25Dto+6.00D |
| ɸ70 | 900B | 57.12 | 9.28 | 87.25 | 6.07 | 10.7/6.0 | 5.76 | +6.25Dto+8.00D |
| ɸ70 | 1000B | 51.74 | 10.24 | 87.25 | 6.07 | 13.5/7.2 | 6.44 | +8.25Dto+10.00D |
| ɸ70 | 1200B | 43.38 | 12.22 | 87.25 | 6.07 | 15.0/5.0 | 7.93 | +10.00Dto+12.00D |
| Production | 1.499 semi finished single vision lens |
| Monomer | PPG |
| Diameter | 55/65/70mm |
| Coating Choice | HC |
| Abbe value | 58 |
| Specific Gravity | 1.32 |
| Transmission | >96% |
| Guarantee years | 5 years |
| Power range | Base: 50~1000 |
II. 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.
III. CR39 Features:
1 ) . The better among other index lenses in hardness and toughness , high impact resistance .
2 ) . The more easily tinted than other index lenses.
5 ) . The more reliable and consistent lens product physically and optically . 6 ) . The more popular in the middle level countries . |  |
IV. Hard Coating:
 | Hard Coating is also named anti-scratch coating, can protect uncoated lenses from impact and scratch resistance. |
V. Production Process:
VI. 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) | |
| 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 | |
VII. The order process:
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.
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.
