High Index 1.74 Super Hydrophobic Coating Cr39 Single Vision Lenses
With Ultra Thin
|1.74||MR-174 , imported from Korea||31|
1). Thickness: It uses the world's thinnest plastic lens material
In the same dipoter SPH: -5.00
1.74 is up to 36% thinner than 1.56 material---NK55
1.74 is up to 24% thinner than 1.61 ( 1.60 ) material---MR-8
1.74 is up to 5% thinner than 1.67 material---MR-7
2). Impact resistance: 1.74 high index lenses meet FDA standard,
can pass the falling spere test, have higher resistance to
scratches and impact
3). Design: It approaches flat base curve, can offer people amazing
visual comfort and aesthetic appeal
4). UV protection: 1.74 single vision lenses have UV400 protection,
that means full protection against UV rays, including UVA and UVB,
protect your eyes everytime and everywhere.
5). Aspherical shape: Aspherical lenses are thinner and lighter
than spherical lenses, relieving the visual fatigue caused by
oppression effectively. In addition, they also can reduce
aberration and distortion, give people more comfortable visual
6). Super Hydrophobic Coating: It also called crazil coating, can
make the surface of the lenses super hydrophobic, smudge
resistance, anti static, anti scratch, reflection and oil, etc.
III. High index lens vs Standard index lens:
There are many different types, options and materials that high
index lenses can be made from and all have different features and
benefits depending on your needs, budget and prescription.
- Understanding Index of Refraction:
The index of refraction; is the speed of light in a vacuum divided
by the speed of light in a material.
The refractive index is the extent to which light is refracted when
it enters a medium. The greater the index the more refraction
occurs. Air has an index of 1.0, water is 1.3 and many type of
glass are around 1.5.
- Higher index lenses bend light at a steeper angle than lesser index
The ‘index’ is the result given as a number: 1.56,1.61,1.67 or 1.74
and the higher the number, the more light is bent or 'slowed down'.
Therefore, these lenses have less curvature for the same focal
power requiring less lens substance/material.
The result being high index lenses are thinner than lesser versions
but achieve the same focal power.
- High Index Lenses Thickness Comparison:
1.60 High Index Lenses are on average 20% thinner than ordinary
1.67 High Index Lenses are on average 35% thinner than ordinary
1.74 High Index Lenses are on average 50% thinner than ordinary
This example shows the difference in thickness for high index
IV. Our factory:
|curing oven||lens cleaning machine|
|lens cleaning machine||hard coating machine|
|AR coating machine||Our factory building|
|Envelops||1) standard white envelop|
2) color envelop with customer design
weight: 157g size: 9*9*9cm
|Outer box||standard export paper carton 38cm*48cm*35cm ( 0.064 CBMS )|
|Include around 500 pairs of finished lenses, 21kgs|
|Include around 100 pairs of semi finished lenses, 15kgs|
|Samples||By Fedex, DHL, UPS, TNT etc.|
|Delivery time: within 3 days|
|Batch goods||By air, sea, express|
|Delivery time: 10-30 days, depend on your quantity|
|Carrier||We can choose for you or offer us your cooperative company|
|Payment terms||30% T/T in advance, the balance before shippment|
VII. Our service:
1. Our Customer service will begin to track the product processing
every day until you receive the goods and verify the product
quality when you finish the payment .
2. Online via SKYPE, Whatsapp; Also through mail, voice phone,
message could contact us at any time!
3. Follow up the case, record the entire process. Solution will be
provide with 24 hours.
Meanwhile, the problem complaint will be reported to QC department.
QC will find defect from which department, who is in charge to
4. Collect and record all the voice from each customer respond,
5. We own the best after-sale service, if any problems happen, our
team will do our best to solve for customers.