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S-LAH63Q is an optical glass with high refractive indices and the smallest positive dn/dT value within the LAH glass family.

In aAutomotive camera lens systems, the focal length is often a fixed distance. Refractive index fluctuations within the optical system should certainly be a consideration, since cars are used in environments where the temperature range can vary widely from below zero in colder climates to more that 50°C inside a car on a summer day. LAH glass types generally have large positive dn/dT values. However since S-LAH63Q has a dn/dT close to zero, the refractive indices fluctuations due to temperature change can be adjusted efficiently. In addition to Automotive camera lens systems, S-LAH63Q can also be used for Projectors, Interchangeable Photographic lenses, and various other applications.


  • Smallest positive dn/dT value within the LAH glass family.
  • Equivalent to S-LAH63 for nd and vd. Different dn/dT can be selected from glasses with the same refractive index.


Type Code nc nd nF ng vd s.g. Coloring
S-LAH63Q 804396 1.79840 1.8044 1.81872 1.83043 39.58 4.45 415/345


S-LAH63Q Supporting

S-LAH63Q Supporting

S-LAH63Q Supporting

Glass Products