Optical glass for polarizing optical system, production...

Optical glass for precision molding

Optical glass for precision molding

Optical glass for precision molding

Optical glass for precision press molding and optical element

Optical glass having a low specific gravity

Optical glass having a negative anomalous dispersion

Optical glass having an anomalous dispersion

Optical glass having n.sub.D =1.63.+-.(1.5.times.10.sup.-2), v.s

Optical glass of negative anomalous partial dispersion in the bl

Optical glass suffering little change in refractive index by...

Optical glass suffering little change in refractive index by...

Optical glass suffering little change in refractive index by...

Optical glass suffering little change in refractive index by...

Optical glass suitable for mold forming

Optical glass with negative anomalous partial dispersion

Optical glass with refractive index 1.60, an abbe number 58, wit

Optical glass with refractive indexes of 1.60-1.69 and Abbe numb

Optical glass with refractive indices>1.90, Abbe numbers>2

Optical glass with varying refraction index