Sf Photogray/Brown 1.56 Optic Eyeglasses Lens Photochromic Prescription Lenses

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

Product Description

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	6.00	13.50	6.00	0.00	-8.00D/-12.00D
70mm	50	53	1000.22	6.00	12.70	6.00	0.3	-7.00D/-10.00D
70mm	100	103	511.80	6.00	12.10	6.00	0.6	-6.00D/-8.00D
70mm	200	205	258.01	6.00	11.00	6.00	1.27	-5.25D/-8.00D
70mm	400	401	132.16	6.00	10.00	8.00	2.18	-2.25D/-5.00D
70mm	500	498	106.32	6.00	7.10	7.00	2.98
70mm	600	604	87.71	6.00	8.00	8.00	3.57	+2.00D/-2.00D
70mm	700	710	74.57	6.00	7.00	9.00	4.25	+1.00D/+2.00D
70mm	800	795	66.67	6.00	7.00	9.50	4.90	+2.25D/+5.00D
70mm	1000	1000	52.99	4.00	5.00	12.00	6.27	+5.25D/+8.00D
70mm	1200	1200	44.16	4.00	5.00	15.00	7.75

Photochromic lens:

 

Photochromic lenses - lenses that are clear indoors and darken when exposed to sunlight - offer a convenient way to protect your eyes outdoors from UV rays and bright light without having to carry around a pair of sunglasses.

 

The molecules in photochromic technology work by reacting to UV light. However, temperature can have an effect on the reaction time of the molecules.
 

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.