Optical constants of SUMITA - SFLD
K-SFLD8
Wavelength:
µm
(0.360–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.7609221-0.011601354λ^{2}+0.029309701λ^{-2}+0.0012957192λ^{-4}-3.6971081\text{×}10^{-05}λ^{-6}+9.8723481\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -9.37e-07 1.62e-08 -1.83e-10 7.05e-07 1.05e-09 0.299
nd: 1.68893
Vd: 31.1
glass_code: 689311
density: 2.94 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.7e-06 K-1
dPgF: 0.0062
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