|Place of Origin:||China|
|Brand Name:||Aogang Optics|
|Model Number:||Polycarbonate Lens Blanks|
|Minimum Order Quantity:||100 pairs|
|Packaging Details:||1) Standard white envelope 2) color envelop with customer design|
|Delivery Time:||10~30 days, depend on your quantity|
|Payment Terms:||L/C, D/A, D/P, T/T, Western Union, MoneyGram, Paypal|
|Supply Ability:||40,000 pieces per day|
|Monomer:||Polycarbonate||Flat Top Segment:||28|
|Abbe Value:||42||Specific Gravity:||1.15|
|Transmission:||> 97.5%||Power Range:||BASE:400, ADD:+100~+350|
Semi-finished 1.59 Flat Top Polycarbonate Lens Blanks With Hard Coating For Eyeglasses
I. Technical Data:
|SEMI-FINISHED PC FLAT TOP BIFOCALS|
|Sage @50mm||Sage @40mm||Center Thickness (mm)||Edge Thickness (mm)||True Curve @1.530||Back Curve||Dseignand SuggestedRX Range|
|Flat Top Segment||28|
|Power Range||BASE: 400, ADD: +100~+350|
1. Polycarbonate Lens
|Polycarbonate lens is made of a thermoplastic polymer of the carbonate group. It is about 10 times more impact resistant than normal plastic or glass lenses. Polycarbonate lenses are preferred over glass lenses by eyewear users, sportsmen and other eye protector users because of its lightweight, ultra violet (UV) and impact resistance properties.
Polycarbonate was discovered in 1953 and was first introduced to the market in 1958. It was used by the astronauts in 1970s as helmet visors. In the 1980s industries started to use polycarbonate as an alternative to standard plastic or glass eyewear. Polycarbonate lenses are a smart choice for those active in sports, hazardous job environments, in fashion eyewear and especially for children.
2. Flat Top Bifocal Lens
Bifocal lenses are lenses with two reading areas, that are separated by a visible line, which distinguishes these lenses from the new progressive lines which do not have a visible line. The most common bifocal lenses are designed with a half-moon shaped reading area in the bottom half of the lens, called a "flat top".
Bifocal lenses are the most cost effective way to create a lens with two viewing areas. In the past, most bifocal lenses were made with a distance and a reading area; nowadays, people are making bifocals with an intermediate area for computer and pad use, together with either a distance area or a reading area.
Lens coatings can enhance the durability, performance and appearance of your eyeglass lenses. This is true whether you wear single vision, bifocal or progressive lenses.
Hard Coating can also be called HC coating, is to enhancethe hardness of the lens to prevent the substrate scratch.
V. Packing & Shipping
|Envelope||Choice 1||Choice 2|
|White Envelope||Your design with your logo|
|Carton||Stand Export Carton (Size:38*48*35 cm)|
|Lenses Pair||Finished optical lens: 1 pcs/envelope, 500 pairs/carton||Semi-finished optical lens: 1 pcs/envelope, 100 pairs/carton|
|Weight||21 KG||15 KG|
|Lead Time||Depend on the order quantity|
|Carrier||We can choose for you or you offer us your cooperative company|
|Payment terms||30% T/T in advance, the balance before shippment|
|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. We are a manufacturer with many years exporting experience. All lenses are exported to European countries, Japan, Korea, North and South America, Middle East, Southeast Asia and Africa market. We guarantee the quality to all buyers all over the world, and got a high reputation about quality from buyers in the past 8 years exporting time.
2. We will begin to track the product processing every day until you receive the goods and verify the product quality when you finish the payment. You could contact us via Internet chat tools anytime, for example Skype, Whatsapp.
3. Our producing process is in vacuum dust-free shop, like prepare material, mixed material and take out .Four times quality checking during production process to contral lens quality.
4. 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 and the printing.
Peggy Lu: +8615052975513 (WhatsApp)