Optical constants of OHARA - LAM (Lanthanum, medium-index)
L-LAM72
Wavelength:
µm
(0.29 – 2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.50483297λ^2}{λ^2-0.0075034233}+\frac{0.433346414λ^2}{λ^2-0.026900952}+\frac{1.2714921λ^2}{λ^2-95.7631272}$$Conditions & Spec sheet
n_absolute: false wavelength_vacuum: false temperature: 25.0 ℃ nd: 1.733099 Vd: 48.896607 glass_code: 733489 glass_status: special density: 3.89 g/cm3 thermal_expansion: - temperature_range: -30 70 ℃ coefficient: 6.6e-06 K-1 - temperature_range: 20 300 ℃ coefficient: 8e-06 K-1 dPgF: -0.0093 climatic_resistance: 3.0 acid_resistance: 51.2 phosphate_resistance: 1.2
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