General Conditions
  CR-39 Hard Resin Lenses
  1.56 Middle Index Hard
  Resin Lenses
  1.56 Photochromic Hard
  Resin Lenses
  1.59 Polycarbonate
  1.61/1.67 Hi-Index Hard
  Resin Lenses
  Mineral White 1.523
  Optical Lenses
  Mineral 1.7/1.8/1.9
  Hi-index Lenses
  Mineral Photochromic
  Sunlens & Polarized
  Quality Control of Lenses
  Package of Lenses
 1.56 Photochromic Hard Resin Lenses
Refraction index Nd=1.56 & Nd=1.60
Abbe value 42 (Nd=1.56) & 41 (Nd=1.60)
Density 1.16 g/cm3 (Nd=1.56) & 1.28 g/cm3 (Nd=1.60)
Can be used well throughout the year, both indoor and outdoor, in all climates and for many different activities.
Clear background color, high original transmittance, high rate of darkening in the sun.
High rate of fading out of the sun, thorough fading capability.
Grey and brown color available.
High scratch resistance, super-hard protection coating available.
HMC+EMI coating available in greenish and bluish color. Super Hydrophobic also available.
Absorbing UV-ray and providing effective protection to the eyes.
  Photo 156 - Dia65mm & Dia70mm (Grey & Brown)
  Photo 156 - Progressive & Bifocal (Grey & Brown)
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