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Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK3

Wavelength: µm
 (0.320 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.98365374-0.0123163831λ^{2}+0.0255848948λ^{-2}-0.000570810681λ^{-4}+0.000147648023λ^{-6}-7.54741056\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
nd: 1.746934
Vd: 51.008591
glass_code: 747510
density: 4.08 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.4e-06 K-1
dPgF: -0.0119
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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