Optical constants of OHARA - BSL (Borosilicate, low-index)
BSL3
Wavelength:
µm
(0.3 – 2.4)
Derived optical constants
n
k
logX
logY
eV
Dispersion formula
$$n^2=2.2187568-0.010447185λ^{2}+0.0095904498λ^{-2}+0.00028540943λ^{-4}-1.9183741\text{×}10^{-05}λ^{-6}+9.7004548\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false λ_is_vacuum: false temperature: 25.0 °C coefficients_of_thermal_dispersion: 4.431e-06 0.0 0.0 0.0 0.0 0.0 n_d: 1.498308 V_d: 65.026785 glass_code: 498650 glass_status: preferred density: 2.36 g/cm3 coefficient_of_thermal_expansion_1: 5.8e-06 K-1 coefficient_of_thermal_expansion_2: 6.5e-06 K-1 ΔP_gF: -0.004 acid_resistance: 3.0 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