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Wholesale Discount Reading With Progressive Lenses - 1.67 MR-7 FSV High Index HMC optical lenses – Boris

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  • Wholesale Discount Reading With Progressive Lenses - 1.67 MR-7 FSV High Index HMC optical lenses – Boris
  • Wholesale Discount Reading With Progressive Lenses - 1.67 MR-7 FSV High Index HMC optical lenses – Boris
  • Wholesale Discount Reading With Progressive Lenses - 1.67 MR-7 FSV High Index HMC optical lenses – Boris

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we are able to provide good quality items, aggressive rate and best shopper assistance. Our destination is You come here with difficulty and we provide you with a smile to take away for Single Vision Distance Prescription, High Prescription Lenses, Transition Lenses In Car, We will empower people by communicating and listening, Setting an example to others and learning from experience.
Wholesale Discount Reading With Progressive Lenses - 1.67 MR-7 FSV High Index HMC optical lenses – Boris Detail:

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Production Details

Place of Origin: Jiangsu Brand Name: BORIS
Model Number: High Index Lens Lenses Material: MR-7
Vision Effect: Single Vision Coating Film: UC/HC/HMC/SHMC
Lenses Color: White(indoor) Coating Color: Green/Blue
Index: 1.67 Specific Gravity: 1.35
Certification: CE/ISO9001 Abbe Value: 32
Diameter: 80/75/70/65mm Design: Asperical

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MR-7 is generally used to make high-level lenses, with a refractive index of 1.677. Enjoy better visual quality than ever, even with height numbers. Compared to traditional lenses, the MR-7 is thinner and safer. MR-7 is also a material with better dyeing effect at present. Some colored lenses and myopia sunglasses are the best choice for this material.

Production Introduction

The refractive index of MR-7 and MR-10 materials reaches 1.67, and the production of high-level lenses is lighter and thinner. The thermal deformation temperature of MR-7 is 85 degrees, and that of MR-10 is 100 degrees. Both MR-7 and MR-10 are 1.67 refractive index lens materials. MR-7 is easier to dye than MR-10, so MR-7 is more suitable for myopia sunglasses, or fashion lenses. MR-10 lenses have higher hardness, better high temperature resistance, and higher processability. They are often used in workshops and custom lens processing.

3

Most of today’s spectacle lenses are based on resin lenses. Generally, in the case of poor heat resistance, the film on the surface of the lens will crack, which is caused by thermal expansion. Compared with the reflective film of the lens, the degree of thermal expansion of the base material is serious, and the degree of thermal expansion of the reflective film and the base material is different, and the film crack will occur.

Based on this consideration, MR-10 avoided this problem from the beginning of material design, and through continuous improvement, became a material with good heat resistance and low thermal expansion coefficient.

First, as the temperature increases, the thermal expansion coefficient tends to increase, but the thermal expansion coefficient of MR-10 is 25% smaller than that of general 1.67 materials. Compared with the general 1.67 material, MR-10 has less thermal expansion, is not prone to cracks, and is relatively less affected by heat.

Second, when the temperature is 95°C, a large number of cracks appear on the conventional 1.67 lens, while the MR-10 is completely unaffected.

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Wholesale Discount Reading With Progressive Lenses - 1.67 MR-7 FSV High Index HMC optical lenses – Boris detail pictures

Wholesale Discount Reading With Progressive Lenses - 1.67 MR-7 FSV High Index HMC optical lenses – Boris detail pictures

Wholesale Discount Reading With Progressive Lenses - 1.67 MR-7 FSV High Index HMC optical lenses – Boris detail pictures

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Our company sticks into the basic principle of Quality is definitely the life of the business, and status may be the soul of it for Wholesale Discount Reading With Progressive Lenses - 1.67 MR-7 FSV High Index HMC optical lenses – Boris , The product will supply to all over the world, such as: Afghanistan, belarus, Porto, We take measure at any expense to achieve essentially the most up-to-date equipment and approaches. The packing of nominated brand is our a further distinguishing feature. The products to assure years of trouble-free service has attracted a great deal customers. The solutions are obtainable in improved designs and richer assortment, they're created scientifically of purely raw supplies. It readily available in a variety of designs and specifications for your selection. The most recent kinds are a great deal better than the preceding one particular and they are quite popular with lots of prospects.
    • It is not easy to find such a professional and responsible provider in today's time. Hope that we can maintain long-term cooperation.
    5 Stars By Carol from Uruguay - 2018.02.04 14:13
    We have been engaged in this industry for many years, we appreciate the work attitude and production capacity of the company, this is a reputable and professional manufacturer.
    5 Stars By Gary from Paris - 2018.06.30 17:29

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