Danyang Optical Lens Manufacturer Photochromatic 1.56 Photogrey Transition Optical Lens

• Customization: Available
• Function: for Presbyopic, for Astigmia, UV Protection, for Myopia
• Material: Nk55, Imported From Japan
• Model NO.: 1.56 photochromic HMC EMI
• 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
• Refractive: 1.56
• Diameter: 65/70mm
• Brand: Seesen

Product Description

 
Photochromic film lenses are available in nearly all lens materials and designs, including high indexes , bifocal and progressive. An added benefit of photochromic lenses is that they shield your eyes from 100 percent of the sun's harmful UVA and UVB rays.

Because a person's lifetime exposure to sunlight and UV radiation has been associated with cataracts later in life, it's a good idea to consider photochromic lenses for children's eyewear as well as for eyeglasses for adults.




1.56 Photochromic Lens

Product Name	1.56 Photochromic Lens
Diameter	65/70MM
Monomer	NK55 (imported from Japan)
Abbe value	42
Specific Gravity	1.16
Power Range	SPH: -20.00~+11.00 CYL: 0.00~-6.00
Guarantee	3~5 year

About the Photochromic lenses

Indoor Protective Lens	Outdoor Protective Lens
In the room or at night, the lenses color are basically transparent, the same as the ordinary lenses, like high light transmission performance, relieve visual fatigue,make you see the world more clear.	Lens under the action of ultraviolet light in the sun color, ultraviolet dark color change, deep, shallow light-colored ultraviolet light, isolated from UV damage, anytime, anywhere to protect your eyes.

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

 About the Coating Choice:


About the Advantages:


About our Factory




FAQ:

Q. How many days will samples be finished? How about mass products?

A. Generally, we need 1~2 days to finish the sample production. As for the mass products, it depends on your order quantity.

 

Q. How can I get sample from you?

A. Just send us your requirements, then we will send samples accordingly.

 

Q. What is the MOQ of optical lens?

A. No MOQ for customer if optical lens is in stock.

 

Q. How do you control lens quality?

A. Producing process is in vacuum dust-free shop, like prepare material, mixed material and take out .Four times quality checking during production process.

  

Q. How about your optical lens production ability per day?

A. About 20000 pairs/day.

 

Q. Are you a factory?

A. Yes, we are a professional optical lens manufactruer in China, and have a factory in Danyang city, Jiangsu province.