Optical constants of SUMITA - GIR
K-GIR79
Wavelength:
µm
(0.350–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.3195074-0.0085801253λ^{2}+0.039978521λ^{-2}+0.0014465322λ^{-4}-3.0453007\text{×}10^{-05}λ^{-6}+7.8005005\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 7.61e-06 2.08e-08 -1.25e-10 1.18e-06 1.01e-09 0.239
nd: 1.85588
Vd: 33.0
glass_code: 856330
density: 5.14 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.1e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.3e-06 K-1
dPgF: -0.0017
climatic_resistance: 1.0
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