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S-LAH52Q has positive dn/dT
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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.
Advantages
- Extremely large positive dn/dT
- Can be used for automotive camera lenses, projectors and photographic interchangable lenses
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Comparison
Type |
Code |
nc |
nd |
nF |
ng |
vd |
s.g. |
Coloring |
S-LAH52Q |
800422 |
1.79389 |
1.79952 |
1.81282 |
1.82356 |
42.24 |
4.47 |
390/335 |
S-LAH52 |
800422 |
1.79388 |
1.79952 |
1.81281 |
1.82355 |
42.2 |
4.41 |
40/34 |


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