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Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF1

Wavelength: µm
 (0.340 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.81903533-0.0164493508λ^{2}+0.0136602235λ^{-2}+0.0024815081λ^{-4}-0.000258533047λ^{-6}+1.30918358\text{×}10^{-05}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 1e-06 2.31e-08 -1.6e-10 5.94e-07 -4.95e-10 0.215
n_d: 1.693631
V_d: 49.233011
glass_code: 694492
density: 3.85 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 7.1e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.5e-06 K-1
ΔP_gF: -0.0045
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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