Optical constants of SUMITA - VC
K-VC90
Wavelength:
µm
(0.330–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.3299316-0.013661207λ^{2}+0.034088332λ^{-2}+0.0010979548λ^{-4}-2.7983676\text{×}10^{-05}λ^{-6}+5.172898\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.39e-07 1.31e-08 -1.78e-10 7.82e-07 9.78e-10 0.232
nd: 1.85280
Vd: 39.0
glass_code: 853390
density: 4.98 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.7e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.4e-06 K-1
dPgF: -0.0056
climatic_resistance: 1.0
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