Optical constants of OHARA - LAH (Lanthanum, high-index)
L-LAH87
Wavelength:
µm
(0.300–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.44196269λ^2}{λ^2-0.00731826717}+\frac{0.617507311λ^2}{λ^2-0.0245370775}+\frac{1.21890079λ^2}{λ^2-105.976009}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 6.1e-06 9.05e-09 -1.35e-11 7.87e-07 7.19e-10 0.19 nd: 1.770300 Vd: 47.401904 glass_status: preferred density: 4.34 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 7.1e-06 K-1 dPgF: -0.0086 climatic_resistance: 2.0 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