Optical constants of SUMITA - LaSF (Lanthanum dense flint)
K-LaSFn21
Wavelength:
µm
(0.360–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=3.3040338-0.016019748λ^{2}+0.037645989λ^{-2}+0.0021532464λ^{-4}-0.00020498123λ^{-6}+2.7623217\text{×}10^{-05}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 20.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 3.35e-06 1.38e-08 -2.07e-11 8.23e-07 1.31e-09 0.268 nd: 1.85000 Vd: 32.4 glass_code: 850324 density: 3.99 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 6e-06 K-1 - temperature_range: 20 300 °C coefficient: 7.6e-06 K-1 dPgF: 0.0085 climatic_resistance: 1.0 acid_resistance: 3.0
References
SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book