Optical constants of SUMITA - PSF
K-PSFn1(M)
Wavelength:
µm
(0.380–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.418365-0.015830577λ^{2}+0.056024892λ^{-2}+0.0042907055λ^{-4}-0.00027089374λ^{-6}+4.8560287\text{×}10^{-05}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -3.11e-06 1.75e-08 -2.81e-10 1.25e-06 1.62e-09 0.307
nd: 1.89945
Vd: 21.3
glass_code: 907212
density: 4.15 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.4e-06 K-1
- temperature_range: 20 300 °C
coefficient: 1.02e-05 K-1
dPgF: 0.0238
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