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1.59 Blue Cut PC Progressive Photochromic Gray HMC Optical lenses
The so-called functional lens refers to special glasses that can bring certain favorable characteristics to the eyes of specific people in specific environments and stages, and can change the visual feeling and make the line of sight more comfortable, clear and soft.
Color-changing lenses: the pursuit of fashion sense, suitable for myopia, hyperopia, astigmatism, and want to wear sunglasses at the same time. Hanchuang full-color lenses change color quickly indoors and outdoors, resist UV and blue light, simply not too cool!
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1.56 Blue cut Progressive Photochromic Gray HMC Optical lenses
Progressive multifocal glasses were invented 61 years ago. Multifocal glasses solved the problem that middle-aged and elderly people need different luminosity to see objects at different distances and need to change glasses frequently. A pair of glasses can see far, fancy, also can see close. The matching of multifocal glasses is a systematic project, which requires much more technology than the matching of monocal glasses. Optometrists not only need to understand optometry, but also need to understand products, processing, adjustment of mirror frame, measurement of face bend, forward Angle, eye distance, pupil distance, pupil height, calculation of center shift, after-sales service, deep understanding of multi-focus principles, advantages and disadvantages, and so on. Only a comprehensive expert can comprehensively consider for customers, in order to match the right multi-focal glasses.
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1.59 PC Blue cut Bifocal Invisible Photochromic Gray HMC Optical lenses
As the name suggests, a bifocal mirror has two luminosity. Generally, it is used to see the distance, such as driving and walking; The following is to see the near luminosity, to see the near, such as reading, playing mobile phone and so on. When bifocal lens just came out, it was indeed regarded as the Gospel of myopia + presbyopia, eliminating the trouble of frequent pick and wear, but as people use, it is found that the shortcomings of bifocal lens also have many.
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1.56 Blue Cut Bifocal Flat Top Photochromic Gray HMC Optical lenses
Color-changing glasses can change color with the light, such as brown or ink in the outdoor strong light, and transparent in the indoor, can play a protective role in the eyes, especially in the prevention of ultraviolet radiation and blue light filtering is of great help.
For people with myopia who need to wear sunglasses to go out, color-changing glasses can save the burden of replacing myopic glasses and sunglasses, and can also solve the problem that some women are not easy to carry multiple glasses without pockets.
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1.59 pc Blue Cut Photochromic Gray HMC Optical lenses
We all know that lenses play a decisive role in a suitable pair of glasses, so when choosing lenses, we should make choices according to our work, life needs and working environment. For example, students, drivers, doctors, etc., such people have high visual requirements for color and distance.
Therefore, when choosing lenses, colorless and transparent lenses should be preferred.
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1.74 Blue Cut Spin Photochromic Gray HMC Optical lenses
Resin lens is the lens formed by chemical synthesis and polishing with resin as raw materials. Resin lens has obvious advantages, its weight is light, wearing more comfortable; Secondly, the resin lens has strong impact resistance and is not fragile and safer; At the same time, the resin lens also has a good light transmission; In addition, resin lenses are easy to be reprocessed to meet special needs. Finally, coupled with the innovation and improvement of coating process, resin lenses also have good wear resistance, so they have become the mainstream of lenses in the market.
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1.71 Blue Cut Spin Photochromic Gray HMC Optical lenses
The quality of substrate determines the durability of the lens and the reliability of the coating. Good substrate clear and bright, long use time and not easy to yellow; And some lenses do not use for a long time on the yellow, or even coating off. Good lens without any scratches, scratches, hairy surface, pitting, lens oblique to meet the light observation, the finish is very high. There is no spot, stone, stripe, bubble, crack inside the lens, and the light is bright.
The higher the refractive index, the thinner the lens, and the higher the price.
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1.67 Blue cut Spin Photochromic Gray HMC Optical lenses
good lens, material is the key
The material of a pair of lenses plays a decisive role in their transmittance, durability and Abbe number (the rainbow pattern on the surface of the lens). It can carry out in-depth research and development on materials, with controllable quality and excellent performance.
film layer, make the lens easy to wear
Good lens film layer can give the lens more excellent performance, not only the optical performance such as transmittance has been greatly improved, its hardness, wear resistance, durability will be greatly improved.
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1.61 Blue Cut Spin Photochromic Gray HMC Optical lenses
Resin is a hydrocarbon (hydrocarbon) exudate from plants, especially conifers, valued for other special chemical structures. Resin can be divided into two kinds of natural resin and synthetic resin, and the resin lens is the lens formed by chemical synthesis and polishing with resin as raw materials. Resin lens has obvious advantages, its weight is light, wearing more comfortable; Secondly, the resin lens has strong impact resistance and is not fragile and safer; At the same time, the resin lens also has a good light transmission; In addition, resin lenses are easy to be reprocessed to meet special needs. Finally, coupled with the innovation and improvement of coating process, resin lenses also have good wear resistance, so they have become the mainstream of lenses in the market.
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1.56 Blue Cut Photochromic Gray HMC Optical lenses
Lens is a transparent material with one or more curved surfaces made of optical materials such as glass or resin. After polishing, it is often assembled into glasses with a glass frame to correct the user’s vision and obtain a clear field of vision.
The thickness of the lens mainly depends on the refractive index and degree of the lens. Myopic lenses are thin in the center and thick around the edges, while hyperopic lenses are the opposite. Usually the higher the degree, the thicker the lens; The higher the refractive index, the thinner the lens
