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Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF1

Wavelength: µm
 (0.340 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.1615525λ^2}{λ^2-106.692961}+\frac{1.49000619λ^2}{λ^2-0.0073654243}+\frac{0.317836401λ^2}{λ^2-0.0313945298}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 1e-06 2.31e-08 -1.6e-10 5.94e-07 -4.95e-10 0.215
nd: 1.693620
Vd: 49.193837
glass_code: 694492
density: 3.85 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 7.1e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 8.5e-06 K-1
dPgF: -0.0028
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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