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Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF50B

Wavelength: µm
 (0.300 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.17461263λ^2}{λ^2-82.6267633}+\frac{1.65889744λ^2}{λ^2-0.0080512806}+\frac{0.413174064λ^2}{λ^2-0.026961264}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 2.17e-06 1.36e-08 -3.28e-11 5.95e-07 8.86e-10 0.161
nd: 1.772500
Vd: 49.598996
glass_code: 773496
glass_status: standard
density: 4.24 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 5.8e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 7.5e-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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