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　 General Conditions
　 CR-39 Hard Resin Lens
　 1.56 Middle Index Hard
　　Resin Lens
　 1.56 Photochromic Hard
　　Resin Lens
　 1.59 Polycarbonate Lens
　 1.61 Hi - Index Hard
　　Resin Lens
　 Mineral White 1.523
　　Optical Lens
　 Mineral 1.7/1.8/1.9
　　Hi-index Lens
　 Mineral Photochromic Lens
　 Sunlens & polarized lens
 
  Mineral Photochromic Lens
 
 
 
Refraction index Nd=1.523
Abbe value 56
Density 2.41 g/cm3
PhotoGray Extra (PGX) & PhotoBrown (PBX) glass from CORNING available
Can be used equally well throughout the year, in and out of doors, in all climates and for many different activities
High original transmittance, high rate of darkening in the sun
AR multi-coating and AR+EMI coating available in greenish and bluish color
Absorb UV-ray and provide effective protection for the eyes
 
  Slim Photo - Dia60mm (Grey & Brown)
  Regular Photo - Dia65mm (Grey & Brown)
  PGX & PBX - Dia65mm (Grey & Brown)
  Photo Bifocal - Dia65mm (Grey & Brown)

PGX, PhotoGray Extra, PBX, PhotoBrown Extra and CORNING are registered trademarks of Corning Inc.
Copyright© 2010 Y & S (Beijing) Opto-Electro Industries Ltd. All Rights Reserved.