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Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF55

Wavelength: µm
 (0.350 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.73920103λ^2}{λ^2-0.00974400845}+\frac{1.16162575λ^2}{λ^2-111.118099}+\frac{0.279488106λ^2}{λ^2-0.0423325277}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -2.76e-06 1.53e-08 -4.05e-11 7.53e-07 5.1e-10 0.241
nd: 1.762000
Vd: 40.105472
glass_code: 762401
density: 4.3 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 8.2e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 9.5e-06 K-1
dPgF: -0.0027
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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