Optical constants of SUMITA - SFLD
K-SFLD6
Wavelength:
µm
(0.370–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.1176009-0.012108189λ^{2}+0.044689743λ^{-2}+0.0016574765λ^{-4}+4.1984442\text{×}10^{-05}λ^{-6}+1.29135\text{×}10^{-05}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -6.59e-06 1.77e-08 -2.13e-10 1.11e-06 8.72e-10 0.277
nd: 1.80518
Vd: 25.4
glass_code: 805254
density: 3.4 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 9.3e-06 K-1
- temperature_range: 20 300 °C
coefficient: 1.07e-05 K-1
dPgF: 0.0136
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