Optical constants of SUMITA - SK (Dense crown)
K-SK5
Wavelength:
µm
(0.280–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.4895419-0.011359477λ^{2}+0.012448401λ^{-2}+0.00055781133λ^{-4}-5.0555753\text{×}10^{-05}λ^{-6}+2.8679508\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 20.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 2.52e-06 1.71e-08 -2.45e-10 3.45e-07 4.68e-10 0.211 nd: 1.58913 Vd: 61.2 glass_code: 589612 density: 3.32 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 5.4e-06 K-1 - temperature_range: 20 300 °C coefficient: 6.7e-06 K-1 dPgF: -0.0012 acid_resistance: 2.0
References
SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book