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You wake up, reach for your glasses on the bedside table, and put them on before your feet touch the floor. That is exactly how most eye care professionals recommend treating your...
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1.56 Semi-Finished Flat Top Bifocal Lens Custom
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.
About
Jiangsu Green Stone Optical Co., Ltd.
Jiangsu Green Stone Optical Co., Ltd. is professional China 1.56 Semi-Finished Flat Top Bifocal Lens Suppliers and Custom 1.56 Semi-Finished Flat Top Bifocal Lens Factory with strong combination of R&D, production and sales.
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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What Is Presbyopia and Why Do You Need Multifocal Lenses? Picture this: you are holding a restaurant menu at arm's length, squinting at the print, or you just bumped your phone's ...
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You are past 40, and something has changed. The menu at your favorite restaurant suddenly seems dimmer. The phone you once read easily now has to be held at arm's length. After a ...
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If you are over 45 and have started holding menus and text messages farther from your eyes to read them, you have probably heard that progressive lenses are the modern fix for pres...
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What Is a Progressive Lens in Eyeglasses? You are reading this because near vision has started to feel unreliable, or because someone told you that progressive lenses are the mode...
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Add: No. 988 Yingchun Road, Industry Zone, Danyang,Jiangsu,China -
Email: [email protected] / [email protected] -
phone: +86 13306102698
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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.
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OEM/ODM 1.56 Semi-Finished Flat Top Bifocal Lens Factory
OEM/ODM 1.56 Semi-Finished Flat Top Bifocal Lens Factory