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1.56 Bifocal Blue Cut 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 really regarded as the good news for people with myopia + presbyopia, which dispenses with the trouble of frequent picking and wearing.
Bifocal lens piece removed the trouble of myopia and presbycusis frequent pick and wear, see far and near can see clearly, the price is also cheaper.
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1.56 Progressive Blue Cut HMC Optical lenses
A Progressive lens is a multi-focal lens. Unlike traditional reading glasses and double-focal reading glasses, progressive lenses don’t have the fatigue of having to constantly adjust the focus of the eye when using double-focal lenses, nor do they have a clear dividing line between the two focal lengths. Wear comfortable, beautiful appearance, gradually become the best choice of presbyopia crowd.
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1.59 PC Bifocal Invisible Blue Cut HMC Optical lenses
Bifocal lenses or bifocal lenses are lenses that contain two correction areas at the same time and are mainly used to correct presbyopia. The far area corrected by the bifocal lens is called the far area, and the near area is called the near area and the reading area. Usually, the distal region is large, so it is also called the main film, and the proximal region is small, so it is called the sub-film.
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1.59 PC Progressive Blue Cut HMC Optical lenses
PC lens general resin lenses are hot solid material, that is, the raw material is liquid, heated to form solid lenses. PC film is also known as “space film”, “space film”, the chemical name of polycarbonate, is a thermoplastic material.
PC lens has a strong toughness, not broken (2cm can be used for bulletproof glass), so it is also called safety lens. The specific gravity per cubic centimeter PC lens is only 2 grams, which is the lightest material used for lenses at present. PC lens manufacturer is the world’s leading Esilu, its advantages are reflected in the lens aspheric treatment and hardening treatment.
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1.59 PC Blue Cut HMC Optical lenses
PC lenses, general resin lenses are thermosetting materials, that is, the raw material is liquid, heated to form solid lenses. PC piece is also called “space piece”, “space piece”, the chemical name is polycarbonate fat, is thermoplastic material. That is, the raw material is solid, heated after shaping into lenses, so this lens will be overheated after the finished product will be deformed, not suitable for high humidity and heat occasions.
PC lens has a strong toughness, not broken (2cm can be used for bulletproof glass), so it is also called safety lens. The specific gravity is only 2 grams per cubic centimeter, making it the lightest material currently used for lenses.
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1.71 Blue Cut HMC Optical lenses
Blue blocking glasses are glasses that prevent blue light from irritating your eyes. Special anti-blue light glasses can effectively isolate ultraviolet and radiation and can filter blue light, suitable for computer or TV mobile phone use.
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1.67 MR-7 Blue Cut HMC Optical lenses
Anti-blue light lenses with a blocking rate of more than 20% according to the ISO standard are recommended for daily use of LED digital display devices such as televisions, computers, pads and mobile phones. The anti-blue light lens with the blocking rate of more than 40% according to the ISO standard is recommended to be worn by people who watch the screen for more than 8 hours a day. Because the anti-blue light glasses filter part of blue light, the picture will be yellow when viewing objects, it is recommended to wear two pairs of glasses, one pair of ordinary glasses for daily use, and one pair of anti-blue light glasses with a blocking rate of more than 40% for the use of LED display digital products such as computers. Flat (no degree) anti-blue light glasses are very popular among non-myopic users, specially for computer office wear, and gradually become a fashion.
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1.74 Blue Coat HMC Optical lenses
Eyeglass 1.74 means the lens with refractive index of 1.74, which is the one with the highest refractive index on the market, and the one with the thinnest lens thickness. Other parameters being equal, the higher the refractive index, the thinner the lens, and the more expensive it will be. If the degree of myopia is more than 800 degrees, it is considered to be ultra-high myopia, and a refractive index of 1.74 is suitable.
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1.61 MR-8 Blue Cut Single Vision HMC Optical lenses
1.60 means that the refractive index of the lens is 1.60, the higher the refractive index, the thinner the lens of the same degree.
MR-8 is a polyurethane resin lens.
1. Among all 1.60 lenses, its optical performance is relatively excellent, and the Abbe number can reach 42, which means that the clarity and fidelity of seeing things will be higher;
2. Its tensile strength can reach 80.5, which is better than ordinary lens materials;
3. Its heat resistance can reach 100℃, the performance is relatively stable, the proportion is also relatively low.
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1.56 FSV Blue Block HMC Blue Coating Optical lenses
Blue Block Lens, we also call it Blue Cut Lens or UV420 Lens.And it has two kinds different blue block lens, one is material blue block lens, this kind is block the blue light by material;another one is adding a blue block coating to block the blue light.Most customers choose material blue block lens, because it’s cheaper and easy to check its block function, just need a blue light pen is enough.
