To nearsighted patient, glasses is the safeguard of eyesight health. Lens regards glasses function as the core of the mechanism, its structure basically includes base piece with velar layer two parts, among them the specific function that velar layer turns lens with Yu Jiang, and base piece the material qualitative carrier that serves as lens, bearing the weight of the optical function of lens (the) such as number of refractive index, Abbe, light transmittance, it is the crucial essential factor that decides lens character. However, in market of high-end lens raw material, KOC of the Korea below company limited of Japanese Mitsui chemistry and banner almost forestall market of raw material of lens of Gao Sheshu fat, domestic lens manufacturer still is faced with foreign enterprise “ to block the problem of neck ” .
Through the research that lasts for years and development, new material Inc. mastered beneficial abundant to get together stage by stage the core technology of material of sulfur mellow optics, the crucial monomer —— that begins production to lose colophony lens high from 2018 gets together sulfur is mellow, broke day Han to be opposite the long-term monopoly that breaks market of lens raw material high, the ability of own to promoting lens of our country high end material safeguard, speech power that masters market of Gaoshe lens raw material has important sense. Current, beneficial abundant new material already to much home industry business of famous lens production offers money.
Of colophony lens material evolve
Glasses lens material was experienced by optical glass, CR-39, PC/ of a few acting material such as colophony of Yakeli, polyurethane evolve, 20 centuries 60 to 80 time, colophony lens exceeds glass to make the main material of glasses lens quickly. Because lens refractive index increases, the meeting is aggravating phenomenon of its chromatic dispersion, reduce lens Abbe number, because this looks from the development course of colophony lens, its material is qualitative basically undertake improvement along the method that increases number of Abbe of refractive index, give attention to two or morethings.
Of colophony lens material evolve into the history
generation: CR-39(is low lose lens)
Xi propyl 2 pleasant are mellow ester of 2 carbonic acid, namely the CR-39 material with common now people, original at going up by American PPG company 40 time develop the century, apply at glasses lens material gradually, improved the defect with vitreous brittle material. The Abbe number of CR-39 lens is higher, optical performance is superior, refractive index is 1.49, had become at present low the most extensive data is used in losing lens. Fall in same degree normally, the refractive index of lens is lower, lens jumps over massiness, refractive index is only the CR-39 lens of 1.49 will naturally bring the problem that deserves to wear massiness to consumer, because this seeks the lens data of higher refractive index,made the focal point that after this studies.
The 2nd generation: Lens of the Gaoshe in Yakeli, PC()
20 centuries 70 to 80 time, yakeli and PC are used at glasses lens material gradually, refractive index is in 1.56 ～ 1.6 between, material of lens of the 2nd acting colophony from this open, become at present in the representative material of refractive index lens. The proportion of PC material is small and anti-impact properties is strong, but Abbe number is inferior, it is only 29 the left and right sides. Yakeli (PMMA, get together methylic acrylic acid armour ester) use as glasses lens material, cost is cheap, convenient treatment, but its Abbe number is inferior, and anti-impact properties is poorer.
The 3rd generation: Polyurethane material (lose lens high)
1987, mitsui chemistry uses polyurethane data at glasses lens first, name for “MR“ lens material, open the times of lens of high refractive index, namely material of lens of the 3rd acting colophony. Current, mitsui chemistry had rolled out MR-8, MR-7/10, MR-174 to wait get together material of lens of sulfur ammonia ester, refractive index chooses limits but from 1.6 to 1.74, those who satisfied customer is different deserve to wear demand. Compare with phase of data of traditional colophony lens, material of this kinds of lens has refractive index tall, chromatic dispersion light, wear-resisting mixes low, quality fight percussive advantage, in the meantime, below the condition that carries tall light transmittance, the haze index of material, ultraviolet ray cuts off the function such as ability also got promotion, already became an industry to change the first selection material of glasses lens high at present. The relevant function index of each lens material is as follows quite:
Performance of material of different type optics is comparative
Get together the manufacturing technology of lens of sulfur ammonia ester
Get together the demand of lens of sulfur ammonia ester to the index such as the purity of monomer material, chroma, refractive index is extremely high, what production of material of lens of domestic tall reflection needs monomer to count an import basically. Current, production of this lens material uses one-time hot solidify to shape craft, can divide to get together beforehand content production, aggregate solidify two technology measure. In get together beforehand content stage of production, fundamental chemistry raw material mixes according to certain recipe proportion, complementary with activator, specific temperature, environment, after reacting via the polymerization of proper time, generate relatively of macromolecule get together beforehand content. In lens solidify phase, get together beforehand content by infuse lens mould, below specific temperature, environment, via the aggregate solidify of proper time, the lens that forms solid state base piece.
Get together technological process of lens of sulfur ammonia ester, get together sulfur alcohol and ester of different cyanic acid are its base piece core raw material of production. Specific technological process is as follows: Of ① monomer make up: Ester of cyanic acid of A constituent different and B constituent get together what sulfur alcohol mixes juice of; ② makings is pouring with solidify: Use a program to warm up oven first time warms up solidify; ③ flies a model, grind an edge, clean; ④ 2 times solidify: ⑤ of; of lens internal stress eliminates to add hard, plated film in 2 solidify furnace: The purpose reachs light transmittance to raise exterior wearability.
Lens produces technological process
Get together lens of sulfur ammonia ester basically used sulfur atom to be had already relatively Gao Maer refrangibility, have the quality of inferior element chromatic dispersion again, through getting together sulfur alcohol guides sulfur atom colophony lens, count in contented Abbe > below the premise of 30, increase lens refractive index considerably. Current, get together to basically supply manufacturer of sulfur alcohol to be KOC of the Korea below Mitsui chemistry company limited and banner, beneficial Inc. of Feng Xincai makings, two companies all are mastering core technology, technology of the quality control of the product, application all reachs world outstanding level. The main supplier of ester of different cyanic acid has 10 thousand China division of Mitsui of chemical, Japan, Germany is thought of achieve wait for an enterprise, compare at getting together sulfur is mellow, lens production manufacturer is had to ester of different cyanic acid more alternative.
Get together sulfur alcohol is homebred the process that replace
Regard a decision as the crucial material of lens refractive index, get together sulfur alcohol is long-term by forestall of place of foreign head company, foreign company mastered the price that changes lens data market high almost completely to counterpoise. Get together of sulfur alcohol homebred change replace a process, in promoted our country to new material provides independently and ensure ability while, have important sense to the development of colophony lens industry.
Beneficial abundant new material regards Yu Guangxue of a focusing as the enterprise of research and development of new material product, production and sale, already developed now get together sulfur is mellow 504, material of monomer of lens of glasses of high refractive index of two 405 1.60/1.67, broke abroad the long-term forestall that to getting together sheet of lens of sulfur mellow optics expects, the get togethering of beneficial Feng Xincai sulfur mellow material is successive already 3 years selected " Shandong province emphasis is new material head batch uses demonstrative guidance list " .
In addition, beneficial abundant new material still is had get together the manufacturing technology with relevant data of colophony of sulfur aether optics, this material is production 1.71, the crucial monomer of lens of colophony of 1.74 refractive index, new material of abundant of the beneficial inside two years will undertake predicting future unit go into operation, realize industrialized production, in order to satisfy the requirement that the market changes material of colophony lens monomer to freeboard.
Lens brim ply is inferior refractive index is average lens thin 1/3
Combatting impact strength is common lens 6 times
Future, present high degree to turn trend and promotion of dweller consumption level as nearsighted patient, the lens of Gao Sheshu fat of lighter, thinner, clearer ” will become “ the inevitable demand of average consumer, and the business that beneficial Feng Xincai can produce monomer of Gaoshe lens key exclusively as home, also breaking through new generation to inspect smooth data with technical force, all-around the vision that protects people is healthy.
