Optix.eXpert is our new website that aims at connecting optical professionals with employers looking to outsource optics related work. Sign up and fill out a short form to start offering your service!
Optical constants of OHARA - BAL (Barium, low-index)
S-BAL2
Wavelength:
µm
(0.34 – 2.4)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.30923813λ^2}{λ^2-0.00838873953}+\frac{0.114137353λ^2}{λ^2-0.0399436485}+\frac{1.17882259λ^2}{λ^2-140.257892}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 25.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -4.92e-06 1.14e-08 -3.59e-11 5.24e-07 7.01e-10 0.247
nd: 1.570989
Vd: 50.799858
glass_code: 571508
density: 2.89 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 9.1e-06 K-1
- temperature_range: 20 300 °C
coefficient: 1.09e-05 K-1
dPgF: -0.0005
climatic_resistance: 3.0
acid_resistance: 1.0
phosphate_resistance: 1.0
Comments
Recommended
References
OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets