Optical constants of OHARA - BSM (Borosilicate, medium-index)
BSM7
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.5432134-0.0102068λ^{2}+0.013983216λ^{-2}+0.00045963235λ^{-4}-3.2963243\text{×}10^{-05}λ^{-6}+1.9413424\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 2.929e-06 0.0 0.0 0.0 0.0 0.0
nd: 1.607291
Vd: 59.375631
glass_code: 607594
glass_status: preferred
density: 3.51 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.5e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.6e-06 K-1
dPgF: -0.0017
acid_resistance: 51.2
phosphate_resistance: 2.2
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets