Optical constants of OHARA - BPH (Borophosphate, high-index)
BPH35
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.6413378-0.012997513λ^{2}+0.02125189λ^{-2}+0.00074166905λ^{-4}-1.9814508\text{×}10^{-05}λ^{-6}+3.0698879\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false wavelength_vacuum: false temperature: 25.0 ℃ thermal_dispersion: - type: "Schott formula" coefficients: 9.051e-06 0.0 0.0 0.0 0.0 0.0 nd: 1.644496 Vd: 40.817749 glass_code: 645408 glass_status: preferred density: 3.46 g/cm3 thermal_expansion: - temperature_range: -30 70 ℃ coefficient: 4.8e-06 K-1 - temperature_range: 20 300 ℃ coefficient: 6.2e-06 K-1 dPgF: -0.0067 acid_resistance: 52.1 phosphate_resistance: 4.2
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets