BAF12 by Hoya

Obsolete Unknown Environmentally Dangerous

BAF12 by Hoya is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.639302 and a Vd of 45.070071. It has dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.334–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.334–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength

No transmission data available.

Transmission Calculator
Valid wavelength range: 0.334–2.325 µm
Optical Properties
Refractive Index (nd) 1.639302
Abbe Number (Vd) 45.070071
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.62958 - 0.00945177\,\lambda^2 + 0.0189164\,\lambda^{-2} + 0.000865568\,\lambda^{-4} - 5.91806 \times 10^{-5}\,\lambda^{-6} + 5.27569 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) —
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) —
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
BAF12 Sumita 1.6393 45.0
BAM12 Ohara 1.6393 44.878032
S-BAM12 Ohara 1.6393 44.872804
C48-46 Corning 1.647747 46.227993
N-BAF51 Schott 1.65224 44.96
BAF51 Schott 1.652242 44.930457
C38-42 Corning 1.637752 42.433862
N-KZFS11 Schott 1.63775 42.41
K-BaF9 Sumita 1.64328 47.8
BAF9 Sumita 1.64328 47.8
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
BAF23 Hoya 1.652238 44.922169
ATF4 Hoya 1.653757 44.723072
E-BAF8 Hoya 1.62374 47.05
BAF8 Hoya 1.623739 47.054197
BAF9 Hoya 1.643278 47.941673
LAF45 Hoya 1.61396 44.29
ADF40 Hoya 1.6134 44.290061
ADF10 Hoya 1.613102 44.361138
E-ADF10 Hoya 1.6131 44.36
ADF4 Hoya 1.612498 44.873885
Compare Glasses
    Compare Selected