Optical constants of SUMITA - VC
K-VC179(M)
Wavelength:
µm
(0.340–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.1342666-0.013761215λ^{2}+0.028817199λ^{-2}+0.00082006501λ^{-4}-5.3846865\text{×}10^{-06}λ^{-6}+2.2272066\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 5.81e-06 1.54e-08 -1.28e-10 7.89e-07 6.03e-10 0.215
nd: 1.79441
Vd: 41.9
glass_code: 799418
density: 4.65 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.1e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8e-06 K-1
dPgF: -0.0058
climatic_resistance: 1.0
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