Оптические линзы против синего света 1 56 прогрессивные синие UV420 HMC линза для очков с синими блоками

Сохранить в закладки 1601005244952:


Цена:2,20 $ - 3,00 $*

Количество:

  • В избранное

Описание и отзывы

Характеристики






I. Specifications:





 








































Refractive index




Diameter




Coating




Specific Gravity




Transmission




1.56




70 mm




AR Coating




1.28




96%




Monomer




Abbe Value




Corridor




Power Range




NK55




35




12mm




SPH: -200~+300    ADD: +1.00~-+3.00
















 





YOU HAD GOOD REASONS TO SWITCH TO PROGRESSIVES, SUCH AS…


* You couldn’t focus as well with your single vision readers when viewing your computer screen at work or at home
* It was driving you crazy taking off your reading glasses every time you needed to see far away
* Your profession or career required you to switch focus between distance and near vision all day long
* Your neck was getting achy craning towards your computer with your single vision reading glasses or bifocals

All of these are valid reasons to switch to progressive lenses and make your life easier. In the beginning there may be a small adjustment period, but it will be well worth it. Plus, with the orientation pamphlet included in your purchase, the transition to progressives will be even smoother.




 










 





Progressives vs. Bifocals
















Bifocals


Bifocals divide their different zones with visible lines, and don’t have the seamless gradations between powers that progressives do.


When you look at a bifocal lens, you’ll be able to see the distinct field meant for near vision; it’s often a half-moon-shaped area positioned at the bottom of the lens.



















Progressives


Progressive lenses have zero lines disrupting the surface of the lens. They also cover a much wider range of powers than bifocals.


A person wearing bifocals might struggle to see something at an intermediate (think: arm’s-length) distance away, because there’s
no “in-between” zone on the lens—there are only distance- and near-vision zones. With progressives, you’ll almost always be able to find the right power for your vision needs.











 


 

Check that your vision is in focus for each zone on your lenses.



 




When you wear progressive lenses, you have 3 different prescriptions that let you transition from seeing at a distance, at mid-range, and nearby. As long as you can clearly see through each lens zone at the proper distance, then your lenses are perfectly fit for you.[1] * Distance zone: Keep your head straight and look at an object at least 40 inches (100 cm) away through the top portion of your lenses.


* Mid-range (intermediate) zone: Hold a book or newspaper in front of you at arm’s length. Slowly tilt
your head back until the words are clear on the page.



* Near zone: Hold a book within 15 inches (38 cm) of your face and tilt your head back to look through
the bottom of your lenses.




* It’s normal for your peripheral vision to look a little distorted on the left and right sides of your
lenses.


 






















Why need progressive lens with blue block?


 




Blue lights nowadays is everywhere, anti-blue Progressive Lenses are ideal for indoor and outdoor activities, such as watching TV, playing on the computer, reading books and reading newspapers, and also suitable for outdoor walks, driving, traveling and daily wear throughout the year.



 






















 

III. Packing and Shipping





 






























































Envelope




Carton




Carton  Size




Choice 1: White Envelope




 


Standard Export Carton




 


50cm*50cm*32cm




Choice 2: Color Envelope with your design




Per Carton




Lens Type




Lenses Pair




Weight




Finished lens




around 500 pairs




22.5kgs




Semi-finished lens




137.5 pairs




19.5kgs




Lead time




Regular Products 




15-20 DAYS




Also Depend On The Order Quantity




Special Products 




25-30 DAYS


































 

IV. About US





 











































V. FAQ










* Q: Is YOULI a manufacturer or a trading company?

A: YOULI is a large-scale manufacturer specialized in lens field more than 35 years.




* Q: Could you provide samples to check 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 people.




* Q: Can you use customized envelope for me?

A: Yes, we provide OEM service and we can design your brand envelope.




* Q: 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.




* Q: What is the time of shipment?

A: It is depended on the order quantity and requirement. Usually, it will take around 7~15 days for 5000 pairs, 20 days for 50000 pairs.

If normal stock lens with white envelope, we can finish in 3 days. Our daily production quantity is 280,000 PCS, so we

can ship out fresh lens in short time.






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