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Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF51

Wavelength: µm
 (0.340 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.82740564-0.0113834621λ^{2}+0.0217208712λ^{-2}+0.000385985738λ^{-4}+1.31857828\text{×}10^{-05}λ^{-6}+6.83783132\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -2.02e-06 1.89e-08 -1.3e-10 4.46e-07 1.77e-10 0.281
n_d: 1.700000
V_d: 48.109868
glass_code: 700481
density: 3.82 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 8e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 9.4e-06 K-1
ΔP_gF: -0.0038
climatic_resistance: 2.0

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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