Optical constants of SUMITA - SSK (Very dense flint)
K-SSK9
Wavelength:
µm
(0.340 – 2.000)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=2.5737917-0.0093452955λ^{2}+0.017645209λ^{-2}+0.00035765081λ^{-4}+1.1614434\text{×}10^{-06}λ^{-6}+1.16034\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -3.89e-06 1.55e-08 -1.07e-10 6.07e-07 4.29e-10 0.203
nd: 1.62012
Vd: 49.8
glass_code: 620498
density: 3.29 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8.3e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.8e-06 K-1
dPgF: -0.0004
climatic_resistance: 2.0
acid_resistance: 3.0
References
SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book