What is blue light?
Generally, scientists say the visible light spectrum comprises electromagnetic radiation with wavelengths ranging from 380 nanometers (nm) on the blue end of the spectrum to about 700 nm on the red end. (By the way, a nanometer is one billionth of a meter - that's 0.000000001 meter!)
Blue light generally is defined as visible light ranging from 380 to 500 nm. Blue light sometimes is further broken down into blue-violet light (roughly 380 to 450 nm) and blue-turquoise light (roughly 450 to 500 nm).
So approximately one-third of all visible light is considered high-energy visible (HEV) or "blue" light.
UV420 Lens
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Blue Cut Lenses
Blue cut lenses feature a special coating that reflects harmful blue light and restricts it from passing through the lenses of your eyeglasses. Blue light is emitted from computer and mobile screens and long term exposure to this type of light increases the chances of retinal damage. Hence, wearing eyeglasses having blue cut lenses while working on digital devices is a must as it may help in reducing the risk of developing eye related problems.
Finished Lens Power Range
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1.56 Blue Cut UV420 FSV |
|
1.56 Blue Cut UV420 ASP FSV |
Diam |
Sph. |
Cyl.(-) |
Diam |
Sph. |
Cyl.(-) |
65mm |
+0.25 ~ +6.00 |
0.00 ~ -4.00 |
65mm |
+0.25 ~ +6.00 |
0.00 ~ -4.00 |
70mm |
0.00 ~ -6.00 |
0.00 ~ -4.00 |
70mm |
0.00 ~ -6.00 |
0.00 ~ -4.00 |
-6.25 ~ -8.00 |
0.00 ~ -2.00 |
-6.25 ~ -8.00 |
0.00 ~ -2.00 |
-8.25 ~ -10.00 |
0.00 |
-8.25 ~ -10.00 |
0.00 |
1.60 Blue Cut UV420 ASP FSV |
|
1.67 Blue Cut UV420 ASP FSV |
Diam |
Sph. |
Cyl.(-) |
Diam |
Sph. |
Cyl.(-) |
65mm |
+0.25 ~ +6.00 |
0.00 ~ -4.00 |
65mm |
+2.25 ~ +8.00
|
0.00 ~ -4.00 |
70mm |
+0.25~ +2.00
|
0.00 ~ -4.00 |
70mm |
+2.25 ~ +6.00
|
0.00 ~ -2.00 |
+2.25 ~ +6.00
|
0.00 ~ -2.00 |
+0.25 ~ +2.00
|
0.00 ~ -4.00 |
-6.25 ~ -8.00
|
0.00 ~ -4.00 |
-6.25~ -10.00
|
0.00 ~ -4.00 |
-8.25 ~-10.00
|
0.00 ~ -2.00 |
-10.25 ~ -12.00
|
0.00 ~ -2.00 |
-10.25 ~ -12.00
|
0.00 |
-12.25 ~ -15.00
|
0.00 |
75mm |
0.00 ~ -6.00
|
0.00 ~ -4.00 |
75mm |
0.00 ~ -6.00
|
0.00 ~ -4.00 |
About the Coating
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Anti-Reflective
- Eliminate reflections, Increase the transmission!
- Decreases unwanted glare, eliminating ghost image.
- Makes the lenses appear somewhat invisible.
Anti-Smudge
- High contact angle, repel oil and water, make lenses more stain-resistant.
- Super-cleanable.
Anti-Static Electricity/Anti-Radiation
- Help relieving digital eye strain.
- Stay Clean, repels dust articles.
• Innovation of technology, blocking glares
Adopting Mitsui Chemical's NeoContrast technology, the lens contains a blocking glare ingredient to achieve a brighter and high- definition vision through clear colors with contrast.
It can reduce the strong sunlight in the day and the glare from roads during night driving. The front object is clearer to be seen by
you when driving which secures your safety, so you can enjoy the wonderful scenery.
About our Factory
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WDO (WEIHAI DINGXIN OPTICAL) is one of the most Potential Finished and Semi-Finished Optical Lenses factory located in Weihai City, China.
Our Key & Advantage Products:
Single Vision Lens:CR-39;1.56;1.60;1.67;1,74
Bifocal Lens: CR-39; 1.56;1.60
Progressive Lens: CR-39; 1.56; 1.60
Functional Lens: Blue Cut, Photochromic; Photomagic +UV420cut, Polarized; Polycarbonate
RX Service: Free Form; Special Coating; Special Power Range
Optical Equipment;Frames
About the Packages & shipping
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• Exquisite private customized packaging to meet all your requirements
Quality Assurance
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Q1: Is your company a trading company or a factory?
A: We are professional optical lens factory.Our company was established in 1998 with covering 24400 spm and 280 employees.
Q2: What is the time of shipment?
A: It is depended on the order quantity and requirement. Normally, it will take one week for sample lenses , and will take 1 month for bulk lenses.
Q3: How do you control the lens quality?
A: We have 4 Quality Checking step to control quality. Uncoated, Hard Coating, AR coating, every production step we have professional quality checking. Before shipment we have extra quality control.
Q4: Could you provide samples for customers checking the quality before they place the order?
A: Yes, of course. when you make the regular order we will return your samples cost. Detail can contact with our sales.
Q5: What are your payment terms?
A: Our payment term is 30% deposit before production and balance payment before the shipment. You can pay by T/T, L/C, Alipay, Western Union ,Paypal and Etc.
Q6: Can you use customized envelope for me?
A:Yes, we can design your brand envelope Free envelops order MOQ:5000 pairs. If less than 5000 pairs, you also can pay the cost 200$ for one design with 5000pairs envelops. Also we have better quality or special requirement for envelops with charge.