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Optical constants of SCHOTT - LaSF (Lanthanum dense flint)
N-LASF46B
Wavelength:
µm
(0.365 – 2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{2.17988922λ^2}{λ^2-0.0125805384}+\frac{0.306495184λ^2}{λ^2-0.0567191367}+\frac{1.56882437λ^2}{λ^2-105.316538}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 5.98e-06 1.3e-08 -3.5e-12 9.13e-07 1.24e-09 0.267
nd: 1.90366
Vd: 31.32
glass_code: 904313.451
glass_status: standard
density: 4.51 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.97e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.11e-06 K-1
dPgF: 0.0045
climatic_resistance: 1.0
stain_resistance: 0.0
acid_resistance: 3.3
alkali_resistance: 1.0
phosphate_resistance: 1.0
Comments
suitable for precision molding
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets