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Optical constants of SUMITA - LaK (Lanthanum crown)
K-LaK7

Wavelength: µm
 (0.365 – 1.548)  
 

Other optical constants

logX   logY   eV

Dispersion formula

$$n^2=2.6805890-1.0513873\text{×}10^{-2}λ^{2}+1.7140176\text{×}10^{-2}λ^{-2}+8.5811085\text{×}10^{-5}λ^{-4}+2.1348318\text{×}10^{-5}λ^{-6}-7.4091988\text{×}10^{-7}λ^{-8}$$

Comments

Refractive index is relative to air at standard conditions; Wavelength in dispersion formula is as measured in air and expressed in micrometers

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

References

Sumita Optical Glass Data Book

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