Optical constants of OHARA - LAM (Lanthanum, medium-index)
L-LAM60
Wavelength:
µm
(0.31–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.47574184λ^2}{λ^2-0.0073695}+\frac{0.496132743λ^2}{λ^2-0.0251891746}+\frac{1.23796236λ^2}{λ^2-98.0306651}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 2.32e-06 7.99e-09 -3.51e-11 6.6e-07 8.15e-10 0.191 nd: 1.743198 Vd: 49.295578 glass_code: 743493 density: 4.2 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 7.4e-06 K-1 - temperature_range: 20 300 °C coefficient: 9.2e-06 K-1 dPgF: -0.0088 climatic_resistance: 3.0 acid_resistance: 51.2 phosphate_resistance: 2.0
Comments
Low Softening Temperature
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets