China Eyeglass Lens Companies Hot Selling Cr39 1.499 Semi Finished Sf UC Single Vision Lens Uncoated Eyeglasses Lens Ophthalmic Lens

• Function: for Presbyopic, for Astigmia, UV Protection, for Myopia
• Material: Cr39
• Coating: Hc,Hmc,Shmc,Green,Blue
• Abbe Value: 58
• Specific Gravity: 1.32
• Power Range: Sph:0.00~-6.00,0.00~+6.00 Cyl:0.00~-6.00
• Model NO.: Semi Finished 1.499 Single Vision
• Diameter: 70mm
• Transmission: > 97%
• Keywords: Sf Cr 39 1.499 UC Lens

Product Description

SEMI-FINISHED 1.499 SINGLE VISION

Blank Size	Normal Base	Back	C/T(mm)	E/T(mm)	Rad	Sag
(MM)	Curve	Curve(D)
70MM	0.50C	6.75	7.4	14.00	901.724	0.220
70MM	1.00C	6.75	7.2	13.40	523.000	0.380
70MM	2.00C	6.75	7.0	11.80	261.500	0.770
70MM	4.00C	5.60	10.5	10.96	142.119	1.410
70MM	6.00C	5.60	8.0	6.97	89.708	2.260
70MM	8.00C	6.75	8.2	6.20	64.727	3.165
70MM	10.00C	6.75	11.0	5.60	54.309	3.810

The definition of semi finished lens:

Semi-finished lenses is the most primitive state of the lens, the customer can buy finished semi-finished lenses according to the required degree of finished lenses to polish, so only semi-finished lenses camber, there is no degree. Different prescription powers request for different semi-finished lens types or base curves.
 

Single vision
 

Single vision or view lenses are generally used for correcting one field of vision, namely distance, intermediate (computer) or near. Younger individuals will be able to wear their single vision lenses all day whereas some older individuals will require different pairs for different tasks.

Coating Choices
 

Hard Coating(HC): To enhance the hardness of the lens to prevent the substrate scratch

Anti-reflection Coating(HMC/ AR): To protect the lens effectively from reflection, enhancing functional and charity of your vision

FAQ:
1. Are your company a manufacturer or a trade company?
We are a manufacturer with many years exporting experience. Our factory is located in Jiangsu province.

2. Can your products be customized?
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.

3. How can I get sample from you?
Just send us your requirements, then we will send samples accordingly.

4. How many days will samples be finished? How about mass products?
Generally, we need 5-7 days to finish the sample production.As for the mass products, it depends on your order quantity.

5. How do you control lens quality?
Producing process is in vacuum dust-free shop, like prepare material, mixed material and take out .Four times quality checking during production process.