Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK50A
Wavelength:
µm
(0.290–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.759437631λ^2}{λ^2-0.0022319671}+\frac{1.16056755λ^2}{λ^2-91.0466256}+\frac{0.92336083λ^2}{λ^2-0.0158590987}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 5.6e-07 1.06e-08 -4.91e-11 3.57e-07 6.22e-10 0.245
nd: 1.651600
Vd: 58.403057
glass_code: 652584
density: 3.5 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.3e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.2e-06 K-1
dPgF: -0.005
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets