Optical constants of OHARA - BSL (Borosilicate, low-index)
BSL22
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.2739528-0.0091160058λ^{2}+0.01226882λ^{-2}-0.00031677862λ^{-4}+6.0075221\text{×}10^{-05}λ^{-6}-2.8098187\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 3.313e-06 0.0 0.0 0.0 0.0 0.0
nd: 1.518206
Vd: 65.039654
glass_code: 518650
glass_status: preferred
density: 2.52 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: -0.0036
acid_resistance: 1.0
phosphate_resistance: 1.0
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets