Optical glass type S-LAL21: improved chemical durability and mechanical strength properties.

Type Code nc nd nF ng vd s.g. Coloring
S-LAL21 703524 1.69895 1.70300 1.71237 1.71976 52.38 3.85 395/320

S-LAL21 improved chemical durability

S-LAL21 is an optical glass with improved chemical durability, specifically water and acid resistance, and mechanical strength properties. These characteristics make it ideal for use in automotive applications, as well as Projectors, Interchangeable Photographic lenses, and various others.


  • Improved chemical durability
  • Ideal for use in automotive, projectors, photographic lenses and others