CR39 1.499 Uncoated Optical Blanks Single Vision 58 Abbe Value PPG Material

White CR39 1.499 Single Vision Semi Finished Lens Blanks With Uncoated Optical Lenses

I. Specifications:

II. Semi Finished lens:

1. The definition and production of semi-finished lenses

Semi-finished lens is the raw blank used to produce the most individualized RX lens according to thepatient's prescription. Different prescription powers request for different semi-finished lens types or base curves.

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.

2. Minus and plus semi-finished lenses

Lenses with different dioptric powers can be made from one semi-finished lens. The curvature of the front and back surfaces indicates whether the lens will have a plus or minus power.

Semi-finished lens is the raw blank used to produce the most individualized RX lens according to the patient's prescription. Different prescription powers request for different semi-finished lens types or base curves.

III. 1.499 CR39 UC:

Aogang CR-39 lenses use the true value of imported CR-39 monomer, the longest history of resin material and the most widely sold lens in middle level country. This determines that Aogang CR-39 lenses have the most outstanding optical features:

----Hardness: The best among other index lenses in hardness and toughness, high impact resistance.

----Tintable: The most easily tinted than other index lenses.

----Transmittance: The highest transmittance as compared with other index lenses.

----ABBE: The highest ABBE value providing the most comfortable visual experience.

----Consistency: The most reliable and consistent lens product physically and optically.

IV. Company pictures:

V. Packing & Shipping

Packing: 1. Envelope: a) standard white envelope b) color envelope with customer design (Weight: 157g, Size: 9*9*9cm) 2. Outer Box a) standard export paper carton (Size: 38*48*35cm, 0.064CBMS) b) Include about 500 pairs of finished lens (Weight: about 21kg) or include about 100 pairs of 100 semi finished lens (Weight: about 15kg) Shipping 1. Samples: a) Delivery time: 3-7 days (by Fedex, DHL, UPS, TNT etc.) b) Sample is free, but according to our company rule, the shipping cost need to be assumed by customers. 2. Batch Goods: a) Delivery time: 10-30 days (depend on your quantity, by air, sea or express) b) Carrier: We can choose for you or offer us your cooperative company

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 .

optical lens blanks

semi finished lenses

CR39 1.499 Uncoated Optical Blanks Single Vision 58 Abbe Value PPG Material Images