Optical constants of OHARA - BSM (Borosilicate, medium-index)
BSM22
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.35097λ^2}{λ^2-0.007454835}+\frac{0.2324447λ^2}{λ^2-0.02949403}+\frac{1.179λ^2}{λ^2-131.6202}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 5.3371e-06 0.0 0.0 0.0 0.0 0.0 nd: 1.622296 Vd: 53.186644 glass_code: 622532 glass_status: preferred density: 3.68 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 6.4e-06 K-1 - temperature_range: 20 300 °C coefficient: 7.7e-06 K-1 dPgF: -0.0015 acid_resistance: 51.2 phosphate_resistance: 2.0
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets