Optical constants of OHARA - LAH (Lanthanum, high-index)
L-LAH83
Wavelength:
µm
(0.31–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.82331579λ^2}{λ^2-0.00911468875}+\frac{0.548625885λ^2}{λ^2-0.032841967}+\frac{1.63182855λ^2}{λ^2-123.611174}$$Conditions & Spec sheet
n_absolute: false wavelength_vacuum: false temperature: 25.0 ℃ thermal_dispersion: - type: "Schott formula" coefficients: 3.99e-06 9.76e-09 -1.73e-11 7.56e-07 7.71e-10 0.225 nd: 1.864000 Vd: 40.577742 glass_code: 864406 glass_status: special density: 5.29 g/cm3 thermal_expansion: - temperature_range: -30 70 ℃ coefficient: 6.8e-06 K-1 - temperature_range: 20 300 ℃ coefficient: 8e-06 K-1 dPgF: -0.0089 climatic_resistance: 3.0 acid_resistance: 3.2 phosphate_resistance: 1.0
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