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  • 1.59 PC round top bifocal hard and ar coating HMC eyeglasses prescription lenses RT 28 eyewear lens
1.59 PC round top bifocal hard and ar coating HMC eyeglasses prescription lenses RT 28 eyewear lens
1.59 PC round top bifocal hard and ar coating HMC eyeglasses prescription lenses RT-28 eyewear lens
1.59 PC round top bifocal hard and ar coating HMC eyeglasses prescription lenses RT-28 eyewear lens
1.59 PC round top bifocal hard and ar coating HMC eyeglasses prescription lenses RT-28 eyewear lens
1.59 PC round top bifocal hard and ar coating HMC eyeglasses prescription lenses RT-28 eyewear lens
1.59 PC round top bifocal hard and ar coating HMC eyeglasses prescription lenses RT-28 eyewear lens
1.59 PC round top bifocal hard and ar coating HMC eyeglasses prescription lenses RT-28 eyewear lens
1.59 PC round top bifocal hard and ar coating HMC eyeglasses prescription lenses RT-28 eyewear lens

1.59 PC round top bifocal hard and ar coating HMC eyeglasses prescription lenses RT 28 eyewear lens

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Product Overview

Description





Products Description




1.59 PC RT-28 HMC

Coating Choice
UC/ HC/HMC/SHMC/UV400/UV420
Diameter
70mm
Abbe Value
32
Specific Gravity
1.20
TRANSMISSION
> 97%
Guarantee
3-5 Years
Monomer
Polycarbonate
Usage
Eyes Protection.Radiation Proof
Power Range
SPH:0.00~+3.00 ADD: +75~+350






PC lenses are the most impact resistant lenses in the world. The polycarbonate material is used in space shuttle viewing Windows and bullet-proof glass. The impact resistance of polycarbonate lenses is 60% higher than glass, 10% higher than ordinary lenses, and 100% UV resistance.






The lower half of a bifocal lens contains the near segment for reading and other close-up tasks. The rest of the lens is usually a distance correction, but sometimes has no correction at all in it, if you have good distance vision.


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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