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Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK54

Wavelength: µm
 (0.290 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.94175946-0.0126663226λ^{2}+0.0243839518λ^{-2}-0.000490360525λ^{-4}+0.000138790487λ^{-6}-7.39070455\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: 6.53e-06 1.91e-08 -1.92e-10 5.37e-07 5.42e-10 0.217
n_d: 1.734000
V_d: 51.494023
glass_code: 734515
density: 4.01 g/cm3
coefficient_of_thermal_expansion_1: 5.1e-06 K-1
coefficient_of_thermal_expansion_2: 7.4e-06 K-1
ΔP_gF: -0.0091
climatic_resistance: 1.0

References

CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)

Data

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

INFO

CDGM Glass Co., Ltd.

CDGM Glass Co., Ltd. is a leading optical glass supplier in China with a worldwile distribution network.

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