Optical constants of OHARA - BSM (Borosilicate, medium-index)
BSM6
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.5601339-0.009371199λ^{2}+0.015290933λ^{-2}+0.00040740566λ^{-4}-2.1956285\text{×}10^{-05}λ^{-6}+1.5738984\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 5.096e-06 0.0 0.0 0.0 0.0 0.0
nd: 1.613749
Vd: 56.365919
glass_code: 614564
glass_status: preferred
density: 3.6 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.6e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.7e-06 K-1
dPgF: -0.0021
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