Optical constants of SCHOTT - LaK (Lanthanum crown)
P-LAK35
Wavelength:
µm
(0.3–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.3932426λ^2}{λ^2-0.00715959695}+\frac{0.418882766λ^2}{λ^2-0.0233637446}+\frac{1.043807λ^2}{λ^2-88.3284426}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 20.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -1.9e-06 7.99e-09 7.76e-12 5.64e-07 6.57e-10 0.185 nd: 1.6935 Vd: 53.2 glass_code: 693532.385 glass_status: standard density: 3.848 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 8.13e-06 K-1 - temperature_range: 20 300 °C coefficient: 9.68e-06 K-1 dPgF: -0.0061 climatic_resistance: 2.0 stain_resistance: 5.0 acid_resistance: 53.3 alkali_resistance: 1.3 phosphate_resistance: 4.3
Comments
suitable for precision molding
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets