Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK7A
Wavelength:
µm
(0.280 – 2.400)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=2.87982167-0.0147537347λ^{2}+0.0188595645λ^{-2}+0.000746887433λ^{-4}-6.23723325\text{×}10^{-05}λ^{-6}+3.88098485\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 2.45e-06 1.45e-08 -7.86e-11 2.61e-07 4.57e-10 0.292
nd: 1.713004
Vd: 53.868142
glass_code: 713538
glass_status: standard
density: 3.74 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.5e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.3e-06 K-1
dPgF: -0.0119
climatic_resistance: 1.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)