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Optical constants of CDGM - LAF (Lanthanum flint)
D-LAF79

Wavelength: µm
 (0.340 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.9216709-0.016405602λ^{2}+0.024564777λ^{-2}+0.0010630152λ^{-4}-3.3184678\text{×}10^{-05}λ^{-6}+4.2899849\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
nd: 1.730774
Vd: 40.525060
glass_code: 731405
density: 3.21 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 9e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 1.11e-05 K-1
dPgF: -0.0041
climatic_resistance: 3.0

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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