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