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Optical constants of CDGM - LAF (Lanthanum flint)
D-LAF050

Wavelength: µm
 (0.290 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.0588612-0.014713037λ^{2}+0.023619508λ^{-2}+0.00067085861λ^{-4}-2.760135\text{×}10^{-05}λ^{-6}+2.1299817\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 4.02e-06 1.48e-08 -2.59e-11 7.08e-07 1.19e-10 0.135
n_d: 1.768419
V_d: 49.290155
glass_code: 768493
density: 4.51 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 5.7e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.4e-06 K-1
ΔP_gF: -0.0109
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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