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Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK51A

Wavelength: µm
 (0.280 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.82348938-0.0126281485λ^{2}+0.0212484444λ^{-2}-0.000445653258λ^{-4}+0.0001038003λ^{-6}-4.7255594\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: -1.57e-07 1.4e-08 -2.98e-11 5.62e-07 8.34e-10 0.148
n_d: 1.696800
V_d: 55.534184
glass_code: 697555
glass_status: standard
density: 3.56 g/cm3
coefficient_of_thermal_expansion_1: 6.3e-06 K-1
coefficient_of_thermal_expansion_2: 8.1e-06 K-1
ΔP_gF: -0.0065
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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