Free sample for Sunglasses - 1.56 Porgressive HMC optical lenses – Boris
Free sample for Sunglasses - 1.56 Porgressive HMC optical lenses – Boris Detail:
Production Details
| Place of Origin: | Jiangsu | Brand Name: | BORIS |
| Model Number: | Progressive Lens | Lenses Material: | NK-55 |
| Vision Effect: | Single Vision | Coating Film: | UC/HC/HMC/SHMC |
| Lenses Color: | White | Coating Color: | Green/Blue |
| Index: | 1.56 | Specific Gravity: | 1.28 |
| Certification: | CE/ISO9001 | Abbe Value: | 38 |
| Diameter: | 75/70mm | Design: | Crossbows and others |
Progressive lenses are developed on the basis of bifocal lenses. That is to say, in the transition between the upper and lower focal lengths, the grinding technology is used to gradually transition between the two focal lengths, that is, the so-called progressive. It can be said that the progressive lens is a multi-focal length lens. When the wearer observes far/near objects, in addition to not having to remove the glasses, the movement of sight between the upper and lower focal lengths is also progressive. That clear dividing line between focal lengths. The only disadvantage is that there are different levels of interference areas on both sides of the progressive film, which will create a sense of swimming in the peripheral vision.
Production Introduction
What are progressive lenses?
Wearing progressive lenses helps the wearer see clearly at any distance without the need to change glasses. Progressive lenses are an alternative to bifocal or trifocal lenses to correct refractive errors such as presbyopia (farsightedness that develops with age and is a common problem in people over 40).
The principle of progressive lenses
Progressive lenses have different power zones from top to bottom on the front. The seamless connection between the powers of the lens allows the wearer to look straight ahead to see distant objects, look down to see objects at intermediate distances, and look down to help the wearer read or perform other activities that use near vision without having to change many pairs glasses.
Advantages of progressive lenses
People often choose progressive lenses for aesthetics, as two areas of different power can be clearly seen from a bifocal (or trifocal) lens. Progressive lenses replace this design with seamless power changes, avoiding the visual incoherence caused by moving the gaze up and down when wearing bifocal or trifocal lenses, and can really help the wearer improve vision.
Product Process
Product Video
Product detail pictures:
Related Product Guide:
We aim to find out high quality disfigurement in the generation and provide the most effective services to domestic and abroad clients wholeheartedly for Free sample for Sunglasses - 1.56 Porgressive HMC optical lenses – Boris , The product will supply to all over the world, such as: Montreal, Slovakia, Johor, Welcome to visit our company, factory and our showroom where displays various hair products that will meet your expectation. Meanwhile, it is convenient to visit our website, and our sales staff will try their best to provide you the best service. Please contact us if you need more information. Our aim is to help customers realize their goals. We are making great efforts to achieve this win-win situation.
By Janice from France - 2018.04.25 16:46
We have been cooperated with this company for many years, the company always ensure timely delivery ,good quality and correct number, we are good partners.
By Diana from Milan - 2017.09.29 11:19
-
Special Price for Photochromic Sunglasses - 1....
-
100% Original Polycarbonate Lens Material - 1....
-
Hot sale Polychromatic Lenses - 1.56 Porgressi...
-
Reasonable price Photochromic Readers - 1.56 B...
-
Wholesale Polarised Transition Lenses - 1.74 M...
-
Factory best selling Polycarbonate Lens Means -...