Optical constants of OHARA - LAH (Lanthanum, high-index)
L-LAH85V
Wavelength:
µm
(0.340–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.97460503λ^2}{λ^2-0.0101854258}+\frac{0.361903592λ^2}{λ^2-0.0384829118}+\frac{1.38433241λ^2}{λ^2-103.713627}$$Conditions & Spec sheet
n_absolute: false wavelength_vacuum: false temperature: 25.0 ℃ thermal_dispersion: - type: "Schott formula" coefficients: 5.8e-06 1.01e-08 -1.47e-11 7.72e-07 7.64e-10 0.232 nd: 1.854000 Vd: 40.378368 density: 5.25 g/cm3 thermal_expansion: - temperature_range: -30 70 ℃ coefficient: 6.3e-06 K-1 dPgF: -0.0073 climatic_resistance: 4.0 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