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Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK61

Wavelength: µm
 (0.280–2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula

$$n^2=2.96883578-0.0137037464λ^{2}+0.0224806873λ^{-2}+0.00013022706λ^{-4}+3.52478352\text{×}10^{-05}λ^{-6}-1.34827056\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 3.47e-06 1.55e-08 -6.52e-11 4.66e-07 6.39e-10 0.22
nd: 1.740999
Vd: 52.676196
glass_code: 741526
density: 4.1 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 5.8e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.2e-06 K-1
dPgF: -0.0096
climatic_resistance: 1.0

References

CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets

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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