RefractiveIndex.INFO

Refractive index database


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Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK67

Wavelength: µm
 (0.300 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula

$$n^2=2.7410828-0.016285022λ^{2}+0.015866919λ^{-2}+0.0010819231λ^{-4}-7.7131038\text{×}10^{-05}λ^{-6}+4.033333\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
nd: 1.670003
Vd: 51.758578
glass_code: 670517
density: 3.73 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: -0.004

References

CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)

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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