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Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF55

Wavelength: µm
 (0.350 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.01845855-0.0104580593λ^{2}+0.0288640175λ^{-2}+0.000697086524λ^{-4}+6.35741467\text{×}10^{-06}λ^{-6}+2.82444289\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: -2.5e-06 2.11e-08 -8.33e-11 7e-07 -1.49e-10 0.249
n_d: 1.762004
V_d: 40.106913
glass_code: 762401
density: 4.3 g/cm3
coefficient_of_thermal_expansion_1: 8.2e-06 K-1
coefficient_of_thermal_expansion_2: 9.5e-06 K-1
ΔP_gF: -0.004
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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