Semi-Finished Cr39 1.499 Flat Top Bifocal Hmc Sf FT-28 Eyeglasses Optical Lenses

• Function: for Presbyopic, for Astigmia, UV Protection, for Myopia
• Material: Cr 39
• Abbe Value: 58
• Specific Gravity: 1.32
• Coating Choice: Hc, Hmc, Green,Blue
• Power Range: Sph:0.00~+3.00 0.00~-2.00 Add:+1.00~+3.00
• Model NO.: SF 1.499 FT-28 HMC
• Diameter: 70/28mm
• Transmission: > 97%
• Guarantee: 3~5 Years
• Key Word: Sf Cr39 1.499 Flat Top Bifocal Lens
• Brand: Seesen

Product Description

SEMI-FINISHED 1.499 FLAT-TOP LENS

MATERIAL REFRACTIVE INDEX = 1.499                       TOOLING INDEX = 1.530
Diameter	Nominal Curve	front Radius	T.C	Back Radius	Back T.C	CT/ET	Front Sag Ring 50mm	RX Range Recommened
70mm	200B	234.27	2.26	94.93	5.58	10/14	1.34	-5.25D~-8.00D
70mm	400B	127.62	4.15	94.93	5.58	10/12	2.47	+2.00D~-5.00D
70mm	600B	87.18	6.08	161.04	3.29	9/6	3.66	0.00D~+4.00D
70mm	800B	66.49	7.97	161.04	3.29	13/6	4.88	+4.25D~-6.00D

Bifocal lenses are perfect for people suffering from presbyopia- a condition in which a person experiences blurred or distorted near vision while reading a book.
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.