-
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.
-
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.
-
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.
-
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.
-
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.
-
1.71 Single Vision HMC Optical lenses
1.71 lens Full name 1.71 refractive index lens, with high refractive index, high transmittance, high Abbe number characteristics, in the case of the same myopia degree, can significantly reduce the thickness of the lens, reduce the quality of the lens, at the same time, make the lens more pure and bright, not easy to disperse rainbow grain. It is found that adding cyclic sulfide resin into the lens material can improve the refractive index of the lens, but too much cyclic sulfide resin will lead to the reduction of light transmittance and material cracking. By precisely controlling the content of ring sulphur resin in 1.71KR resin, the 1.71 lens achieves high refractive index and abbe number while ensuring good light transmittance, low dispersion and clearer vision.
-
1.56 Single Vision HMC
Lens, lens is also called mirror center, is the painting center after mounting, suitable for clamping in the mirror frame, so it is called mirror center. Its form can be horizontal, vertical, is a simple, convenient installation.
Classification: Lenses can be divided into the following four types according to different materials:
Resin lens special lens space lens glass lens
-
1.49 Single Vision UC
The refractive index of the lens, 1.49, 1.56, 1.60, 1.67, 1.71, 1.74 on the upper mark of the lens refers to the refractive index of the lens. For myopic glasses, the higher the refractive index of the lens, the thinner the edge of the lens, on the premise that other parameters are the same.
-
CR39 Sunglasses lenses
Sunglasses are a kind of vision care products to prevent the damage to human eyes caused by strong sunlight. With the improvement of people’s material and cultural level, sunglasses can be used as special accessories for beauty or personal style.
-
1.74 MR-174 FSV High Index HMC optical lenses
Generally,when we talk the index of resin lens, it’s from 1.49 – 1.56 – 1.61 – 1.67 – 1.71 – 1.74. So the same power, 1.74 is the thinnest, the higher the power, the more obvious the effect.
-
1.67 MR-7 FSV High Index HMC optical lenses
1.67 index lens usually has two kinds materials,MR-7 material and MR-10 material.
But MR-7 material is the more widely used and best known material than MR-10 material.
-
1.61 MR-8 FSV High Index HMC optical lenses
1.61 index lens usually separate two kinds,1.61 MR-8 lens and 1.61 Acrylic lens.
1.61 MR-8 lens will be more comfortable when wearing,because of its good Abbe Value:41.
