Optical constants of CDGM - FK (Fluor crown)
H-FK71A
Wavelength:
µm
(0.280–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.1034791-0.0050373404λ^{2}+0.00629672175λ^{-2}+0.000223232867λ^{-4}-2.25577913\text{×}10^{-05}λ^{-6}+1.15904431\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -2.19e-05 -1.02e-08 -3.61e-11 4.81e-07 1.36e-09 0.08
nd: 1.456498
Vd: 90.470884
glass_code: 457905
glass_status: preferred
density: 3.64 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 1.36e-05 K-1
- temperature_range: 20 300 °C
coefficient: 1.74e-05 K-1
dPgF: 0.0415
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets