・ Refraction index Nd=1.523.
・ Abbe value 56.
・ Density 2.41 g/cm3.
・ Used well throughout the year, both indoor and outdoor, in all climates and for many different activities.
・ High original transmittance, high rate of darkening in the sun.
・ AR multi-coating and AR+EMI coatings are available in greenish and bluish colors.
・ Absorbing UV-ray and providing effective protection to the eyes.