Optical constants of SUMITA - SFLD
K-SFLD1
Wavelength:
µm
(0.360–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.8465679-0.01179579λ^{2}+0.032766631λ^{-2}+0.0014514223λ^{-4}-4.8225155\text{×}10^{-05}λ^{-6}+1.2981324\text{×}10^{-05}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: -2e-06 1.26e-08 -4.49e-10 9.35e-07 1.09e-09 0.27
nd: 1.71736
Vd: 29.5
glass_code: 717295
density: 3.03 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 8.2e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 9.7e-06 K-1
dPgF: 0.0075
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