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Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF54

Wavelength: µm
 (0.330 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula

$$n^2=3.14470202-0.010105906λ^{2}+0.0343096974λ^{-2}-0.000833127912λ^{-4}+0.000217008428λ^{-6}-8.70147899\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 6.31e-06 2.13e-08 9.75e-11 1.02e-06 2.29e-10 0.077
nd: 1.799519
Vd: 42.253294
glass_code: 800422
density: 4.51 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 5.7e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 7e-06 K-1
dPgF: -0.0064
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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