Optical constants of SUMITA - VC
K-VC91(M)
Wavelength:
µm
(0.350–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.4226561-0.014620569λ^{2}+0.037712137λ^{-2}+0.0019015089λ^{-4}-0.00011042813λ^{-6}+1.2477487\text{×}10^{-05}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.08e-06 1.12e-08 -9.02e-11 8.61e-07 1.32e-09 0.245
nd: 1.88175
Vd: 34.9
glass_code: 887350
density: 4.87 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.7e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.5e-06 K-1
dPgF: -0.0025
climatic_resistance: 1.0
acid_resistance: 1.0
References
SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book