Factory made hot-sale Single Vision Eyeglasses - 1.71 Single Vision HMC Optical lenses – Boris
Factory made hot-sale Single Vision Eyeglasses - 1.71 Single Vision HMC Optical lenses – Boris Detail:
Production Details
Place of Origin: | Jiangsu | Brand Name: | BORIS |
Model Number: | High Index Lens | Lenses Material: | KR |
Vision Effect: | Single Vision | Coating Film: | HC/HMC/SHMC |
Lenses Color: | White(indoor) | Coating Color: | Green/Blue |
Index: | 1.71 | Specific Gravity: | 1.38 |
Certification: | CE/ISO9001 | Abbe Value: | 37 |
Diameter: | 75/70/65mm | Design: | Aspherical |
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.
Production Introduction
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.
1.71 is a counterattack product. In general, the higher the refractive index, the lower the Abbe number. The 1.67 Abbe number is 32, the 1.74 is 33, and the 1.71 can do 37. The counterattack is successful. The Abbe number is high, the dispersion is low, which is simply clearer.1.67 is much cheaper than 1.74, but it is too thick in terms of height. 1.74 is indeed thin, but the price is relatively high, the middle span is relatively large. Many friends can only choose 1.67 for their wallet. And 1.71 fills that gap.
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High quality Very first,and Consumer Supreme is our guideline to offer the most beneficial service to our consumers.At present, we're attempting our greatest to be among the top exporters in our area to fulfill buyers far more need to have for Factory made hot-sale Single Vision Eyeglasses - 1.71 Single Vision HMC Optical lenses – Boris , The product will supply to all over the world, such as: Sweden, Islamabad, Brazil, Our professional engineering group will always be ready to serve you for consultation and feedback. We are able to also offer you with absolutely free samples to meet your requirements. Finest efforts will likely be produced to give you the ideal service and goods. For anyone who is thinking about our company and merchandise, please contact us by sending us emails or contact us quickly. As a way to know our merchandise and firm. lot more, you can come to our factory to find out it. We'll always welcome guests from all over the world to our business to build company relations with us. Please feel free to get in touch with us for business and we believe we are going to share the top trading practical experience with all our merchants.
By Daisy from Macedonia - 2017.03.28 16:34
A good manufacturers, we have cooperated twice, good quality and good service attitude.
By Patricia from Czech republic - 2018.02.21 12:14