Optical constants of SUMITA - CaFK
K-CaFK95
Wavelength:
µm
(0.270 – 2.000)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=2.0408226-0.0045471403λ^{2}+0.0058631038λ^{-2}+0.00012966471λ^{-4}-1.1902639\text{×}10^{-05}λ^{-6}+6.9279944\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -2.06e-05 -5.62e-09 -2.69e-11 3.17e-07 3.49e-10 0.174
nd: 1.43425
Vd: 95.0
glass_code: 434950
density: 3.54 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 1.29e-05 K-1
- temperature_range: 20 300 °C
coefficient: 1.67e-05 K-1
dPgF: 0.0483
climatic_resistance: 1.0
acid_resistance: 4.0
References
SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book