Optical Lenses of Eyeglasses1.67 Spin Photochromic Hmc Photochromic Eyeglass Lenses Transition Lens

• Customization: Available
• Function: for Presbyopic, for Astigmia, UV Protection, for Myopia
• Material: Mr-7,Imported From Korea
• Model NO.: 1.67 spin photochromic HMC
• Coating: Hc,Hmc,Shmc,Green,Blue
• Abbe Value: 32
• Specific Gravity: 1.35
• Power Range: Sph: 0.00~+-15.00 Cyl: 0.00~-6.00
• Diameter: 65/70/75mm
• Transmission: > 97%
• Keywords: 1.67 Spin Photochromic Hmc

Product Description

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."



What is the photochromic lens?
 

Photochromic lenses typically will not darken inside a vehicle because the windshield glass blocks most UV rays.

1.67 photochromic lens

Product Name	1.67  Spin Photochromic HMC Lens
Diameter	65/70/75MM
Monomer	MR-7,Imported From Korea
Abbe value	32
Specific Gravity	1.35
Power Range	SPH: 0.00~+-15.00 CYL: 0.00~-6.00

About the Coating


Comparison of physical properties of lenses

	MR-8	MR-7	MR-174	Polycarbonate(PC)	NK-55	CR39
Referactive Index	1.61	1.67	1.74	1.59	1.56	1.49
Abbe Value	41	32	33	32	37.5	58
Specific Gravity	1.30	1.35	1.47	1.20	1.28	1.32
Diameter	65/70/75	65/70/75	65/70/75	65/70/75	55/60/65/72	55/60/65/70
Impact Resistance	Good	Good	Good	Good	Good	Good
Static Load Resistance	Good	Good	Good	Good	Good	Good

Why do we wear the photochormic glass?

About Our Company:
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.