Basic Info.
Model NO.
1.56 UV420 Blue Cut Round Top HMC
Specific Gravity
1.28
Diameter
70mm
Segment
28mm
Power Range
Sph: 0.00~-2.00 ,0.00~+3.00, Add: +1.00~+3.00
Refractive Index
1.56
Keywords
1.56 Round Top Rt-28 Bifocal Lens
Trademark
Seesen
Origin
Danyang, China
Product Description
1.56 UV420 Blue Cut Round top Optical Lens
| Product Name | Diameter | Monomer |
| 1.56 UV420 Blue Cut Round top Optical Lens | 70mm | NK55 (imported from Japan) |
| Abbe value | Specific Gravity | Power Range |
| 40 | 1.28 | SPH: 0.00~-2.00 ,0.00~+3.00, ADD: +1.00~+3.00 |
Details:
Round Top Bifocal
Bifocal lens can be called a multi purpose lens. It has 2 different fields of vision in one visible lens. The larger of the lens usually has the prescription necessary for you to see for distance.
What is blue light?
Blue light is, in fact, the harmful rays that emit especially from the digital screens such as a computer, laptops, tablets and game stations that people use a lot in daily life. So we need blue light filter lenses.
In fact, studies show overexposure to blue light may be linked to eye strain, increased risk of macular degeneration, and sleep cycle disruption. One of the ways that you can reduce your exposure to blue light is by wearing glasses with blue light blocking lenses.
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.