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Danyang factory price 1.56 blue cut uv420 progressive HMC multifocal photochromic eyeglasses lenses
Danyang factory price 1.56 blue cut uv420 progressive HMC multifocal photochromic eyeglasses lenses
Danyang factory price 1.56 blue cut uv420 progressive HMC multifocal photochromic eyeglasses lenses
Danyang factory price 1.56 blue cut uv420 progressive HMC multifocal photochromic eyeglasses lenses
Danyang factory price 1.56 blue cut uv420 progressive HMC multifocal photochromic eyeglasses lenses
Danyang factory price 1.56 blue cut uv420 progressive HMC multifocal photochromic eyeglasses lenses
Danyang factory price 1.56 blue cut uv420 progressive HMC multifocal photochromic eyeglasses lenses
Danyang factory price 1.56 blue cut uv420 progressive HMC multifocal photochromic eyeglasses lenses

Danyang factory price 1.56 blue cut uv420 progressive HMC multifocal photochromic eyeglasses lenses

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Price:$0.50 - $5.00

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Product Overview

Description





Products Description




1.56 UV420 Blue Cut Photogrey Progressive HMC
1.56 UV420 Blue Cut Photogrey Progressive HMC
Coating Choice
UC/ HC/HMC/SHMC/UV400/UV420
Diameter
75mm
UV Protection
UV 420
TRANSMISSION
> 97%
Specific Gravity
1.28
Guarantee
3-5 Years
Abbe Value
40
Monomer
NK 55
Power Range
SPH:0.00~+3.00 0.00~-2.00 ADD:+1.00~+3.00




The multifocal design of progressive lenses offers these important benefits:

* It provides clear vision at all distances (rather than at just two or three distinct viewing distances).
* It eliminates bothersome "image jump" caused by bifocals and trifocals. This is where objects abruptly change in clarity and apparent position when your eyes move across the visible lines in these lenses.
* Because there are no visible "bifocal lines" in progressive lenses, they give you a more youthful appearance than bifocals or trifocals. (This reason alone may be why more people today wear progressive lenses than the number who wear bifocal and trifocals combined.)


Other Products


Specification
MR-8
MR-7
MR-174
Polycarbonate(PC)
NK-55
CR-39
Refractive
Index
1.61

1.67
1.74
1.59
1.56
1.499/1.50
Abbe Number
(ve)
41
32
33
32
37.5
58
Specific Gravity
1.30
1.35
1.47
1.20
1.28
1.32
Diameter
65/70/75
65/70/75
65/70/75
65/70/75
55/60/65/72
55/60/65/70
Impact
Resistance
Good
Good
OK
Good
OK
OK
Static Load
Resistance
Good
Good
OK
Good
Poor
Good








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