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Optical constants of CDGM - LAF (Lanthanum flint)
H-LAFL5

Wavelength: µm
 (0.350–2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.26562517λ^2}{λ^2-102.654797}+\frac{1.8132477λ^2}{λ^2-0.011161487}+\frac{0.173525791λ^2}{λ^2-0.0541388764}$$

Conditions & Spec sheet

n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -2.04e-07 2.8e-08 -1.11e-10 6.56e-07 -8.41e-10 0.272
nd: 1.753670
Vd: 37.491665
glass_code: 754375
density: 3.71 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 7e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.4e-06 K-1
dPgF: 0.0001
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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