RefractiveIndex.INFO

Refractive index database


Shelf

Book

Page

Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK1

Wavelength: µm
 (0.290 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{0.964886701λ^2}{λ^2-91.193933}+\frac{0.468480585λ^2}{λ^2-0.0205810529}+\frac{1.23722796λ^2}{λ^2-0.00608509423}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -5.01e-06 2.49e-08 -4.65e-11 5.72e-07 -7.93e-10 0.06
nd: 1.659500
Vd: 57.347260
glass_code: 660574
density: 3.94 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 7.7e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 8.7e-06 K-1
dPgF: -0.0021
climatic_resistance: 4.0

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