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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF75B

Wavelength: µm
 (0.360 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{0.322804345λ^2}{λ^2-0.055262706}+\frac{2.16371144λ^2}{λ^2-0.0124574436}+\frac{1.59867722λ^2}{λ^2-108.245897}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -2.36e-06 1.27e-08 -2.37e-11 9.1e-07 1.21e-09 0.262
nd: 1.903660
Vd: 31.418411
glass_code: 904314
density: 4.56 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 7e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 8.8e-06 K-1
dPgF: 0.0021

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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