Optical constants of OHARA - BPH (Borophosphate, high-index)
BPH45
Wavelength:
µm
(0.3–2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.8619065-0.012425617λ^{2}+0.02988917λ^{-2}+0.0010370691λ^{-4}+1.6015692\text{×}10^{-06}λ^{-6}+4.4595212\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 1.198e-05 0.0 0.0 0.0 0.0 0.0
nd: 1.718502
Vd: 33.515702
glass_code: 719335
glass_status: preferred
density: 4.16 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.7e-06 K-1
- temperature_range: 20 300 °C
coefficient: 6.9e-06 K-1
dPgF: -0.0009
acid_resistance: 52.0
phosphate_resistance: 4.3
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets