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Optical constants of OHARA - BSM (Borosilicate, medium-index)
BSM10
Wavelength:
µm
(0.365 – 0.9)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.589111-0.009879155λ^{2}+0.01555047λ^{-2}+0.0003664276λ^{-4}-1.829782\text{×}10^{-05}λ^{-6}+1.460153\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 2.8381e-06 0.0 0.0 0.0 0.0 0.0
nd: 1.622799
Vd: 57.063643
glass_code: 623571
glass_status: preferred
density: 3.65 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.8e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8e-06 K-1
dPgF: -0.0025
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets