Shanghai Wei Xing Optical Co., Ltd. is a wholly-owned subsidiary of Zhejiang Wei Xing Industrial Development Co., Ltd., with an investment of more than 60 million yuan, introducing world-advanced production equipment and first-class testing instruments with high starting point and high investment. At present, it has formed an international advanced resin lens production line and technology, specializing in the production and sales of a full range of optical glasses products, such as 1.499, 1.56 middle refraction, 1.60 high refraction, color change, progressive multifocal, color blindness correction glasses and laser protection glasses.
The company has passed the ISO 9001/ISO14001certification, and its products have passed the GB, TUV and CE certification and the FDA approval. Adhering to the business philosophy of "promoting production by development, creating brands by quality, welcoming the market by service and managing benefits", the company strives to build the first brand in China optometry field, and is willing to join hands with customers at home and abroad to create a better future.
Lens type
The main raw material of glass lens is optical glass. Its refractive index is higher than that of resin lens, so glass lens is thinner than resin lens at the same degree. Glass lens has good light transmittance and mechanical and chemical properties, constant refractive index and stable physical and chemical properties. A lens without color is called an optical white disk (white disk), and a pink disk in a colored disk is called a Croce lens (red disk). Croxair lenses can absorb ultraviolet rays and slightly absorb strong light.
Resin is a kind of hydrocarbon secretion from many plants, especially conifers. Because of its special chemical structure, it can also be used as latex paint and adhesive, so it is paid attention to. It is a mixture of various polymer compounds, so it has different melting points. Resin can be divided into natural resin and synthetic resin.
The above contents refer to Baidu Encyclopedia-Wei Xing Lens.