Optical constants of OHARA - BSM (Borosilicate, medium-index)
BSM2
Wavelength:
µm
(0.350 – 0.9)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.540784-0.00928151λ^{2}+0.01490321λ^{-2}+0.0003779065λ^{-4}-1.245295\text{×}10^{-05}λ^{-6}+7.093602\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_absolute: false wavelength_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: -4.2303e-06 0.0 0.0 0.0 0.0 0.0 nd: 1.607379 Vd: 56.815789 glass_code: 607568 glass_status: preferred density: 3.54 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 6.3e-06 K-1 - temperature_range: 20 300 °C coefficient: 7.5e-06 K-1 dPgF: -0.001
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets