Optical glass type S-LAL54Q: improved chemical durability and mechanical strength and has the lowest CTE amongst all glass types.

Type Code nc nd nF ng vd s.g. Coloring
S-LAL54Q 651562 1.64747 1.65100 1.65905 1.66532 56.24 3.36 385/-

S-LAL54Q has improved chemical durability

S-LAL54Q is an optical glass with improved water resistance, acid resistance, and mechanical strength. With this improved chemical durability, S-LAL54Q is an ideal material for use in Projectors, Interchangeable Photographic lenses, and various other applications.


  • Excellent chemical durability
  • High mechanical strength
  • Lowest CTE among OHARA optical glasses