Optical constants of CDGM - FK (Fluor crown)
D-FK95
Wavelength:
µm
(0.280–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.973027043λ^2}{λ^2-0.004919458}+\frac{0.077363216λ^2}{λ^2-0.01820094}+\frac{0.687944956λ^2}{λ^2-159.44609}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -2.24e-05 -5.6e-09 -9.96e-12 3.32e-07 4.01e-12 0.182
nd: 1.437800
Vd: 94.523389
glass_code: 438945
density: 3.52 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 1.43e-05 K-1
- temperature_range: 20 300 °C
coefficient: 1.69e-05 K-1
dPgF: 0.0487
climatic_resistance: 1.0
Comments
anneal rate:4°C/h
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets