Optical constants of OHARA - BSM (Borosilicate, medium-index)
BSM9
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.095086λ^2}{λ^2-0.005354893}+\frac{0.4642304λ^2}{λ^2-0.02206781}+\frac{1.203056λ^2}{λ^2-133.3129}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 5.615e-06 0.0 0.0 0.0 0.0 0.0 nd: 1.614047 Vd: 54.971106 glass_code: 614550 glass_status: preferred density: 3.6 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 6.1e-06 K-1 - temperature_range: 20 300 °C coefficient: 7.2e-06 K-1 dPgF: -0.0015 acid_resistance: 5.2 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