Optical constants of OHARA - BSM (Borosilicate, medium-index)
BSM23
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.5600597-0.0097457249λ^{2}+0.015970594λ^{-2}+0.00066802115λ^{-4}-4.4172822\text{×}10^{-05}λ^{-6}+3.1024931\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false wavelength_is_vacuum: false temperature: 25.0 °C thermal_dispersion: - type: "Schott formula" coefficients: 2.882e-06 0.0 0.0 0.0 0.0 0.0 nd: 1.614839 Vd: 51.172377 glass_code: 615512 glass_status: preferred density: 3.45 g/cm3 thermal_expansion: - temperature_range: -30 70 °C coefficient: 7.1e-06 K-1 - temperature_range: 20 300 °C coefficient: 8.2e-06 K-1 dPgF: -0.0012 acid_resistance: 4.2 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