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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF68B

Wavelength: µm
 (0.340 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.43418261-0.0106199538λ^{2}+0.0400046303λ^{-2}-0.000637942235λ^{-4}+0.000216353029λ^{-6}-8.49876445\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 3.45e-07 1.47e-08 -7.21e-11 7.69e-07 2.19e-10 0.208
nd: 1.883004
Vd: 40.806875
glass_code: 883408
density: 5.53 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.8e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.4e-06 K-1
dPgF: -0.0067
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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