China Factory Semi-Finished 1.56 Photochromic Hmc Eyeglasses Lens Ophthalmic Lens

• Customization: Available
• Function: for Presbyopic, for Astigmia, UV Protection, for Myopia
• Material: Nk55, Imported From Japan
• Model NO.: semi-finished 1.56 Photochromic HMC
• Coating: Hc,Hmc,Shmc,Green,Blue
• Abbe Value: 42
• Specific Gravity: 1.16
• Power Range: Sph: -20.00~+11.00 Cyl: 0.00~-6.00
• Diameter: 65/70mm
• Transmission: > 97%
• Guarantee: 3~5 Years
• Keywords: Sf 1.56 Photochromic Transtion Lens
• Brand: Seesen

Product Description

What is the photochromic lens?
Photochromic lenses are eyeglass lenses that are clear (or nearly clear) indoors and darken automatically when exposed to sunlight. Other terms sometimes used for photochromic lenses include "light-adaptive lenses" and "variable tint lenses."


SEMI-FINISHED 1.56 PHOTOCHROMIC HMC LENS

MATERIAL REFRACTIVE INDEX = 1.552                     TOOLING INDEX = 1.530
Diameter	Nominal Curve	T.C	Rad	Back Curve	E.T	C.T	Sag (50mm)	RX Range Recommened
70mm	plano	0.04	11250.02	6	13.5	6	0	-8.00D/-12.00D
70mm	50	53	1000.22	6	12.7	6	0.3	-7.00D/-10.00D
70mm	100	103	511.8	6	12.1	6	0.6	-6.00D/-8.00D
70mm	200	205	258.01	6	11	6	1.27	-5.25D/-8.00D
70mm	400	401	132.16	6	10	8	2.18	-2.25D/-5.00D
70mm	500	498	106.32	6	7.1	7	2.98
70mm	600	604	87.71	6	8	8	3.57	+2.00D/-2.00D
70mm	700	710	74.57	6	7	9	4.25	+1.00D/+2.00D
70mm	800	795	66.67	6	7	9.5	4.9	+2.25D/+5.00D
70mm	1000	1000	52.99	4	5	12	6.27	+5.25D/+8.00D
70mm	1200	1200	44.16	4	5	15	7.75

About the Photochromic Lens:

Coating Choice:



About our Factory
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.