Optical constants of CDGM - FK (Fluor crown)
D-FK95-25
Wavelength:
µm
(0.280–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.989211963λ^2}{λ^2-0.005065907}+\frac{0.060141262λ^2}{λ^2-0.019705386}+\frac{0.685377886λ^2}{λ^2-158.935083}$$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: 1.437440
Vd: 94.438841
glass_code: 437944
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: 0.0486
climatic_resistance: 1.0
Comments
anneal rate:25°C/h
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets