RefractiveIndex.INFO

Refractive index database


Shelf

Book

Page

Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK12

Wavelength: µm
 (0.290 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{0.786703112λ^2}{λ^2-0.00202073208}+\frac{1.21770392λ^2}{λ^2-86.703479}+\frac{1.04086924λ^2}{λ^2-0.0163643393}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -1.86e-07 1.39e-08 -1.79e-11 4.74e-07 4.36e-10 0.167
nd: 1.696800
Vd: 56.175305
glass_code: 697562
density: 3.71 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 6.4e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 8e-06 K-1
dPgF: -0.0071
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.

External links


Glass

External links