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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF90

Wavelength: µm
 (0.370 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.81589583-0.0188810016λ^{2}+0.0545200672λ^{-2}+0.00508907678λ^{-4}-0.000444175735λ^{-6}+5.0454684\text{×}10^{-05}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -2.21e-06 1.4e-08 -4.36e-11 1.1e-06 1.62e-09 0.284
nd: 2.000689
Vd: 25.435062
density: 4.74 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 7e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.7e-06 K-1
dPgF: 0.0113

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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