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Optical constants of CDGM - LAF (Lanthanum flint)
D-LAF50

Wavelength: µm
 (0.300 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.07490611-0.0115747081λ^{2}+0.0253759637λ^{-2}+0.000221233049λ^{-4}+3.69552724\text{×}10^{-05}λ^{-6}-1.22052174\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 1.23e-06 1.11e-08 -3.15e-11 6.13e-07 1.44e-09 0.228
nd: 1.774002
Vd: 49.604291
glass_code: 774496
density: 4.93 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 7.3e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.9e-06 K-1
dPgF: -0.007
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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