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Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK3

Wavelength: µm
 (0.320–2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.27801447λ^2}{λ^2-90.6830082}+\frac{1.19473815λ^2}{λ^2-0.0181704833}+\frac{0.793028102λ^2}{λ^2-0.00108737276}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
nd: 1.746930
Vd: 50.950085
glass_code: 747510
density: 4.08 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 6e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 7.4e-06 K-1
dPgF: -0.0085
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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