Shi Fei lens is divided into two series, one is Shifei ultra-clean film lens, and the other is Shifei ultra-hard EP film lens.
Two kinds of lenses in Shi Fei series are introduced in detail below: Shifei super hard water film is the latest resin lens coating made of new coating materials. On the basis of the original water-based function of the coating, the oily function of the coating is increased, so that the dustproof, waterproof and anti-pollution functions of the lens are three times higher than those of ordinary resin lenses. The water production performance can be continuously wiped 10000 times; After continuous heating for 200 hours, the performance is basically unchanged.
trait
1: The unique patented hard water film has strong oil stain resistance and wear resistance, and the lens is not easy to stain and peel off.
2. It is completely UV-resistant, and the UV-resistance of aspheric varieties with 1.56 and above is as high as 395 (sampling measurement is 400); The ultraviolet resistance of eTV 1.56 is only 370, that of Cosmos 1.59 is only 385, that of eTV 1.67 is 396, and that of Jing Rui is 400.
3. Completely prevent electromagnetic radiation, only computer chips have this function; Essilor lenses do not have this function, nor does TAG Heuer lenses, nor do ordinary resins and apertures.
4. The edge of each lens has watermark anti-counterfeiting mark, which is not easy to forge; Moreover, the anti-counterfeiting marks of lenses with different refractive indexes are also different, which is convenient for identification. Ultra-clean film series lens is the latest research achievement obtained by Kemi Liangshan, South Korea, and its film won the gold medal of technological innovation in South Korea, which was exhibited for the first time at the 2009 International Milan Exhibition.