Optical glass type S-LAM73: highest refractive index among glass types with negative dn/dT.
Type | Code | nc | nd | nF | ng | vd | s.g. | Coloring |
---|---|---|---|---|---|---|---|---|
S-LAM73 | 794371 | 1.78732 | 1.79360 | 1.80872 | 1.82119 | 37.09 | 4.45 | 415/350 |
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 positive dn/dT values, the refractive indices fluctuations due to temperature change can be adjusted efficiently when these materials are combined with S-LAM73. In addition to Automotive camera lens systems, S-LAM73 can also be used for Projectors, Interchangeable Photographic lenses, and various other applications.
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