S-LAH52Q is an optical glass with extremely large positive dn/dT. In Automotive camera lens systems, the focal length is often a fixed distance. Refractive index fluctuations within the optical system should certainly be a consideration, as 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. Since many optical glasses have low dispersion and negative dn/dT values, the refractive indices fluctuations due to temperature change can be adjusted efficiently when these materials are combined with S-LAH52Q. In addition to Automotive camera lens systems, S-LAH52Q can also be used for Projectors, Interchangeable Photographic lenses, and various other applications.