Factory Eyeglass Lenses Optical Lens 1.56 UV420 Blue Cut Round Top Hmc Wholesale Eyeglass Lens

• Customization: Available
• Function: for Presbyopic, for Astigmia, UV Protection, for Myopia
• Material: Nk55, Imported From Japan
• Model NO.: 1.56 UV420 Blue Cut Round Top HMC
• Abbe Value: 40
• 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
• Brand: Seesen

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

Comparison of physical properties of lenses

Visual Effect	Type	Diameter(mm)	Coat
	Spheric	55/65/70/72	UC, HC, HCT, HMC, SHMC
Single Vision
	Aspheric	65/70	UC, HC, HMC, SHMC
	UV400	65/72	UC, HC, HMC, SHMC
	Round Top	70/28	UC, HC, HMC
Bifocal
	Flat Top	70/28	UC, HC, HMC
Progressive		75/12&14	UC, HC, HMC, SHMC
Photochromic		65/70	HC, HMC, SHMC
Blue Cut		65/72	HC, HMC, SHMC

Details:


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.


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.

About the Coating:
About the Custom Service:


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.