BAF2 by Hoya

Obsolete Unknown Environmentally Dangerous

BAF2 by Hoya is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.56965 and a Vd of 49.392725. 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) 1.56965
Abbe Number (Vd) 49.392725
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.41913 - 0.00825587\,\lambda^2 + 0.0148125\,\lambda^{-2} + 0.00063948\,\lambda^{-4} - 3.94014 \times 10^{-5}\,\lambda^{-6} + 2.94212 \times 10^{-6}\,\lambda^{-8}}$$
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
BAF2 CDGM 1.569703 49.435926
H-BAF2 CDGM 1.5697 49.452646
BAL2 Ohara 1.570989 50.797474
S-BAL2 Ohara 1.570989 50.799858
BAF1 Sumita 1.5569 48.5
KZFN1 Schott 1.551149 49.637723
BAFN6 Schott 1.589 48.45
BAL7 Ohara 1.58875 51.179278
KZFS6 Schott 1.591965 48.509579
N-BAF3 Schott 1.58272 46.64
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
BAFL2 Hoya 1.570989 50.858935
SBF1 Hoya 1.551151 49.517289
FEL3 Hoya 1.560125 47.090971
BAF6 Hoya 1.589003 48.543984
BAF3 Hoya 1.58267 46.462286
BAFL3 Hoya 1.571348 52.982526
ADF1 Hoya 1.564997 52.958253
FEL4 Hoya 1.561379 45.226718
BAFL6 Hoya 1.589036 52.935166
LAF50 Hoya 1.60199 50.21
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