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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF67

Wavelength: µm
 (0.350 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.43595778-0.014299558λ^{2}+0.036984078λ^{-2}+0.00131399739λ^{-4}-2.83852011\text{×}10^{-05}λ^{-6}+5.77405361\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 3.08e-06 6.74e-09 -7.29e-11 1.03e-06 2.1e-09 0.185
nd: 1.883850
Vd: 37.205485
glass_code: 884372
density: 5.5 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.7e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.5e-06 K-1
dPgF: -0.0045
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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