Danyang High Quality Fast Change 1.61 Spin Photochromic Hmc Transition Optical Lenses

• Function: for Presbyopic, for Astigmia, UV Protection, for Myopia
• Material: Mr-8 (Imported From Korea)
• Abbe Value: 41
• Specific Gravity: 1.30
• Power Range: Sph: 0.00~ -6.00, 0.00~ +6.00 Cyl: 0.00~ -6.00
• Photochromic Color: Grey/Brown
• Model NO.: 1.61 spin photochromic HMC
• Diamater: 65/70/75mm
• Keywords: 1.61 Spin Photochromic Hmc
• Brand Name: Seesen

Product Description

What are the photochromic lens?

Photochromic lenses are made of many lens materials including plastic, glass or polycarbonate. They are typically used as sunglasses that conveniently switch from a clear lens indoors, to a sunglasses depth tint when outdoors, and vice versa.



1.61 photochromic lens

Product Name	Diameter	Monomer
1.61 Spin Photochromic HMC Eyeglasses Optical Lenses	65/70/75MM	MR-8 (imported from Korea)
Abbe value	Specific Gravity	Power Range
41	1.30	SPH: 0.00~ -6.00, 0.00~ +6.00 CYL: 0.00~ -6.00

About the Coating
Depending on the layers of coating, lenses differ in functionality. Coating consists of much technicality as much as lenses do, here is ' how lens coating works ' for your reference. 
 

Hard Coating: To protect the uncoated lenses from scratch resistance.

AR Coating/Hard Multi Coating: To protect the lens effectively from reflection, enhance functional and charity of your vision

Super Hydrophobic Coating/Crazil Coating: To make the lens waterproof, antistatic , anti slip and oil resistance. 

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

Advantages of the photochromic lens

Reduced costs - buying a single pair of dual purpose photochromic glasses that can provide vision for both indoors when clear and providing sunglasses protection outside is more cost effective than buying two separate pairs.

About the Custom Service:


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.