cr39 1.499 single vision/bifocal/progressive lenses semi finished optical lens blanks

Please contact us for any semi-finished lens you are interested in.

I. Product Specification

1.49 semi-finished single vision optical lens
Index	Diameter	Monomer
1.49	70mm	CR39
Abbe value	Specific Gravity	Transmission
58	1.32	> 97%
Coating Choice	Power range
UC/HC/HMC	ADD: +100~ +350,  Base: 2/4/6/8

II. Product Features

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.

Rather than just the cosmetic quality, semi-finished lenses are more about the inner quality, such as precise and stable parameters, especially for the prevailing freeform lens.

1) High qualified rate in power accuracy, tability, cosmetics quality 2) High optical features 3) Good tinting effects and hard-coating/AR coating results 4) Realize the maximum production capacity 5) Punctual delivery

3. Coating Choice

Hard coating	AR coating/Hard multi coating	Super hydrophobic coating
make the uncoated lenses are easily subjicted andexposed to scratches	protect the lens effectively from reflection, enhance functional and charity of your vision	make the lens waterproof, antistatic, anti slip and oil resistance

III. Product Display

IV. About Us

Jiangsu Aogang Optical eatablished in 1996, we are a professional optical lens manufacturer with more than 20 years of experience in China and over 10 years of exporting experience, covering the areas 12000 square meters and having more than 300 employees.

A wide range of product catalog is one of our advantages including index 1.499,1.56,1.60,1.67,1.74,1.59 PC , finished single vision, bifocal, progressive, photochromic, semi-finished lens and so on, which can guarantee meeting different requirment of our customers. For now, our products have been exported to more than 50 countries over Europe, Asia, Oceania, North and South America and Africa . We are deslious to build business relationship with you. Aogang Optical aims at serving your company.

Exhibition:

V. Packing and Shipping

Choice 1
Envelope	Carton	size
White Envelope	Stand Export Carton	38cm*48cm*35cm
Choice 2
Your design with your logo
Type	Lenses Pair	Weight
Finished lens	about 500 pairs	21KGS
Semi-finished lens	about 100 pairs	15KGS
Lead time	Depend on the quantity
Depend on the quantity	We can choose for you or offer us your cooperative company
All the numbers provided above are estimated number,the actual numbers need to be measured according to the order you make

VI. FAQ

Q. How many days will samples be finished? How about mass products?

A. Generally, we need 1~2 days to finish the sample production. As for the mass products, it depends on your order quantity.

Q. How can I get sample from you?

A. Just send us your requirements, then we will send samples accordingly.

Q. What is the MOQ of optical lens?

A. No MOQ for customer if optical lens is in stock.

Q. How do you control lens quality?

A. Producing process is in vacuum dust-free shop, like prepare material, mixed material and take out . Four times quality checking during production process.

Q. How about your optical lens production ability per day?

A. About 20000 pairs/day.

Q. Are you a factory?

A. Yes, we are a professional optical lens manufactruer in China, and have a factory in Danyang city, Jiangsu province.

If you have any problems,  please contact us or visit our official website.

VII. Contact Us