Nantong Lyusen Environmental Protection Purification Material Co., Ltd.

1.56 Semi-Finished Flat Top Bifocal Lens Wholesale

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  • 1.56 Semi-Finished Flat Top Bifocal Lens
  • 1.56 Semi-Finished Flat Top Bifocal Lens
  • 1.56 Semi-Finished Flat Top Bifocal Lens
  • 1.56 Semi-Finished Flat Top Bifocal Lens
  • 1.56 Semi-Finished Flat Top Bifocal Lens
  • 1.56 Semi-Finished Flat Top Bifocal Lens
  • 1.56 Semi-Finished Flat Top Bifocal Lens
  • 1.56 Semi-Finished Flat Top Bifocal Lens

1.56 Semi-Finished Flat Top Bifocal Lens

Flat-top lens were used to correct two different eye prescriptions. Bifocals were easy to spot – they had a line dividing the lens in two, with the upper half for distance vision, and the lower half for reading. The semi-finished lens are produced in a casting process. Here, liquid monomers are first poured into moulds. Various substances are added to the monomers, e.g. initiators and UV absorbers. The initiator triggers a chemical reaction that leads to hardening or “curing” of the lens, while the UV absorber increases the UV absorption of the lens and prevents yellowing.

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1.56 flat-top semi-finished optical lens
Model: 1.56 optical lens
Place of Origin: Jiangsu, China
Brand: SETO
Lenses Material: Resin
Bending 200B/400B/600B/800B
Function flat-top & semi-finished
Lenses Color Clear
Refractive Index: 1.56
Diameter: 70
Abbe Value: 34.7
Specific Gravity: 1.27
Transmittance: >97%
Coating Choice: UC/HC/HMC
Coating color Green
About
Nantong Lyusen Environmental Protection Purification Material Co., Ltd.
Jiangsu Green Stone Optical Co.Ltd.

Jiangsu Green Stone Optical Co., Ltd. is a professional optical lens manufacturer with strong combination of  R&D, production and sales. We have production base of 65000 square meters and more than 350 employees. With introduction of complete sets of advanced equipment, new production technology and moulds, we sell our optical lenses not only in the domestic market, but also export to the world.
Our lens products involves almost all types of lenses. Product range covers 1.499, 1.56, 1.60, 1.67, 1.70 and 1.74 index, including single vision,bifocal, progressive, blue cut, Photochromic, blue cut photochromic, Infrared cut etc. with HC, HMC and SHMC treatment. Besides finished lens, We also manufactures semi-finished blanks. The products are registered with CE&FDA and our production certified by ISO9001& ISO14001 standards.
We positively introduce excellent management technology, comprehensively import Corporate Identity System and enhance the external image of company and brand. 

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