Optical constants of SUMITA - SSK (Very dense flint)
K-SSK4
Wavelength:
µm
(0.270–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.5720683-0.010564186λ^{2}+0.015625643λ^{-2}+0.00040593207λ^{-4}-1.3424134\text{×}10^{-05}λ^{-6}+6.4355621\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 1.84e-06 1.42e-08 -1.94e-10 5.13e-07 7.12e-10 0.198
nd: 1.61765
Vd: 55.1
glass_code: 618551
density: 3.39 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.1e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.4e-06 K-1
dPgF: -0.0045
climatic_resistance: 2.0
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