Optical constants of SUMITA - SKF
K-SKF6
Wavelength:
µm
(0.320–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.2505164-0.0088684142λ^{2}+0.012260534λ^{-2}+0.00042234633λ^{-4}-2.1095054\text{×}10^{-05}λ^{-6}+2.2440064\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -9.67e-06 1.6e-08 -1.08e-10 4.97e-07 6.44e-11 0.231
nd: 1.51200
Vd: 52.1
glass_code: 512521
density: 2.51 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 9.5e-06 K-1
- temperature_range: 20 300 °C
coefficient: 1e-05 K-1
dPgF: 0.0035
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