Optical constants of CDGM - FK (Fluor crown)
H-FK71
Wavelength:
µm
(0.280–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.22226661λ^2}{λ^2-0.014065122}+\frac{0.880444178λ^2}{λ^2-0.004204574}+\frac{0.797848915λ^2}{λ^2-171.029818}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -2.16e-05 -5.35e-09 -8.74e-12 3.15e-07 2.57e-10 0.172
nd: 1.456500
Vd: 90.273821
glass_code: 457903
density: 3.63 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 1.36e-05 K-1
- temperature_range: 20 300 °C
coefficient: 1.67e-05 K-1
dPgF: 0.0429
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets