OEM Supply Glass Eyeglasses - 1.67 MR-7 FSV High Index HMC optical lenses – Boris
OEM Supply Glass Eyeglasses - 1.67 MR-7 FSV High Index HMC optical lenses – Boris Detail:
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 |
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.
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.
Product Process
Product Video
Product detail pictures:
Related Product Guide:
We always follow the principle Quality Very first, Prestige Supreme. We have been fully committed to delivering our customers with competitively priced high-quality products and solutions, prompt delivery and experienced services for OEM Supply Glass Eyeglasses - 1.67 MR-7 FSV High Index HMC optical lenses – Boris , The product will supply to all over the world, such as: Canada, Mexico, Sydney, They are sturdy modeling and promoting effectively all over the world. Never ever disappearing major functions within a quick time, it's a have to for you of fantastic good quality. Guided by the principle of Prudence, Efficiency, Union and Innovation. the corporation. ake an excellent efforts to expand its international trade, raise its organization. rofit and raise its export scale. We are confident that we have been going to have a bright prospect and to be distributed all over the world in the years to come.
By Dinah from Spain - 2018.11.04 10:32
The manufacturer gave us a big discount under the premise of ensuring the quality of products, thank you very much, we will select this company again.
By Elma from Anguilla - 2018.07.12 12:19