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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF90

Wavelength: µm
 (0.370 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{0.494167183λ^2}{λ^2-0.0602358038}+\frac{2.31375143λ^2}{λ^2-0.0137149187}+\frac{2.2792987λ^2}{λ^2-148.088436}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -2.2e-06 1.4e-08 -1.91e-11 1.04e-06 1.38e-09 0.29
nd: 2.000690
Vd: 25.425752
density: 4.74 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 7e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 8.7e-06 K-1
dPgF: 0.0117

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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