Basic Info.
Model NO.
1.56 UV420 blue cut photochromic HMC
Specific Gravity
1.28
Power Range
Sph: -20.00~+11.00 Cyl: 0.00~-6.00
Diameter
65/70mm
Transmission
> 97%
UV Value
UV420
Keywords
Blue Cut Photochromic Lens
Trademark
Seesen
Origin
Danyang, China
Product Description
Definition of blue light: It's part of the visible light spectrum, which comes from both the sun and artificial light sources like digital screens and fluorescent lights. This type of light gets absorbed deep in the eye, making it potentially impacting to long-term vision.
1.56 UV420 Blue Cut Photochromic lens
| Product Name | 1.56 UV420 Blue Cut Photochromic HMC |
| Diameter | 65/70MM |
| Monomer | 1.56 UV420 Blue Cut Photochromic HMC |
| Abbe value | 40 |
| Specific Gravity | 1.28 |
| Power Range | SPH: -20.00~+11.00 CYL: 0.00~-6.00 |
How To Protect Your Eyes From Harmful Blue Light?
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. |
About the Coating Choice:
Hard Coating:
The uncoated lenses are easily subjicted and exposed to scratches, so the hard coating can help the lenses be destoried.
Hard Multi Coating
It also called AR coating, means coat another anti-reflective coating on the hard coating . It can perfectly reduce harmful ray and enhance the vision effect..
Super hydrophobic coating:
Also called crazil coating, can make the lenses waterproof, antistatic, anti slip and oil resistance which can keep half one year ~one year
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 Advantages:
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.