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Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK2A

Wavelength: µm
 (0.302 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{0.914808038λ^2}{λ^2-82.3260698}+\frac{1.00522491λ^2}{λ^2-0.004505044}+\frac{0.803415958λ^2}{λ^2-0.018371342}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -5.16e-06 1.42e-08 -4.62e-11 5.61e-07 5.14e-10 0.155
nd: 1.692110
Vd: 54.539198
glass_code: 692545
density: 3.94 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 8e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 9.7e-06 K-1
dPgF: -0.0048
climatic_resistance: 2.0

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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