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Prescription Lens Optical Glasses Lenses Plastic Lenses Resin Lenses
| Price | $120.00 |
|---|---|
| Min Order | 1 Piece |
| Availability | In Stock |
| Shipping From | Jiangsu, China |
| Popularity | 512 people viewed |
Model NO.:
1.49/1.56/1.61/1.67/1.74
Function:
for Presbyopic, for Astigmia, UV Protection, for Myopia
Age Group:
All People
Gender:
Unisex
Suitable for Face:
All Kinds of Faces
Material:
Plastic
Type:
Anti-Reflective Lens
Coating:
HMC
Lenses Color:
White and Grey
Ar Coating:
Green/Blue
Trademark:
No
Transport Package:
Cartons
Specification:
0.07CBM/carton
Origin:
Danyang, Jiangsu, China
HS Code:
9001509900
Product Description
MOQ: 1 pair
All kinds of prescription optical lenses
Index 1.49/1.56/1.61/1.67/1.74
We can supply UC/HC/HMC/SHMCWhite/Grey/Brown/Grey Anti-blue/Brown Anti-blue
Delivery time:2-3 days
Please don't hesitate to contact us!
What is Lens Index?
The lens index refers to the index of refraction (otherwise known as refractive index) of lens material for eyewear. It is a relative measurement number that describes how efficiently the material bends light. Light refraction will depend on how quick light itself passes through the lens. Refractive Index
Lens materials are classified on their refractive index. This refractive index is the ratio of the speed of light when it travels through air to the speed of light when it passes through the lens material. It is an indication of how much light is bent as it travels through the lens. Light is refracted, or bent, at the front surface of the lens, then again as it exits the lens.A denser material bends light more, so not as much material is needed to achieve the same refractive effect as a less dense material. Hence the lens can be made thinner, and also lighter.
With regular eyeglasses lenses, the center of the glasses is thinner and the outer edges are thicker to facilitate refraction which is what makes prescription glasses work! High index lenses have a higher index of refraction than regular lenses, which means they don't need to be as thick around the edges to be effective.
High-index lenses mean that the lens itself can be both thinner and lighter. This allows your glasses to be as fashionable and comfortable as possible. High-index lenses are particularly beneficial if you have a strong eyeglass prescription for nearsightedness, farsightedness, or astigmatism. However, even those with a low eyeglass prescription can benefit from high index lenses.
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