Optical constants of CDGM - FK (Fluor crown)
H-KF6
Wavelength:
µm
(0.340 – 2.400)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=2.26924681-0.0111135716λ^{2}+0.010955079λ^{-2}+0.000811179449λ^{-4}-7.07180723\text{×}10^{-05}λ^{-6}+4.69509667\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -5.94e-07 1.77e-08 -1.13e-10 5.53e-07 9.82e-10 0.212
n_d: 1.517419
V_d: 52.189003
glass_code: 517522
density: 2.47 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.8e-06 K-1
ΔP_gF: 0.0005
climatic_resistance: 1.0
References
CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)