BAF11 by Hoya

Special Very Rare Environmentally Dangerous

BAF11 by Hoya is a special optical glass with a very rare melt frequency. It transmits from 0.33 to 1.55 µm with an nd of 1.66672 and a Vd of 48.3. It has medium thermal expansion (CTE of 7.2×10⁻⁶/K), good chemical resistance, and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.36501–1.5296 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.36501–1.5296 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.330–1.550 µm
Optical Properties
Refractive Index (nd) 1.66672
Abbe Number (Vd) 48.3
Dispersion Formula Schott
Wavelength Range 0.36501 — 1.5296 µm
$$n(\lambda) = \sqrt{2.7273 - 0.0134702\,\lambda^2 + 0.0148093\,\lambda^{-2} + 0.00196153\,\lambda^{-4} - 0.000197877\,\lambda^{-6} + 1.08511 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.2
TCE 100/300°C (10-6/K) 8.7
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[5.78791 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.63
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance 1
Acid Resistance 2
Alkali Resistance —
Phosphate Resistance —
Notes

Not in a position to accept new order because of discontinuation.

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
BAH11 Ohara 1.666718 48.317266
S-BAH11 Ohara 1.666718 48.325247
BAF11 Sumita 1.66672 48.4
BAFN11 Schott 1.666721 48.421391
H-ZBAF16 CDGM 1.66672 48.421731
C67-48 Corning 1.666698 48.434395
BAFN3 Sumita 1.66422 49.2
K-BaFn3 Sumita 1.66422 49.2
K-LCV93 Sumita 1.6652 47.3
CALCITE Generic IR 1.658643 48.541403
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
BAF21 Hoya 1.66422 48.941939
BAF10 Hoya 1.67003 47.2
LAFL20 Hoya 1.68248 48.197606
LACL9 Hoya 1.6779 50.551353
BACED5 Hoya 1.65844 50.86
LAFL1 Hoya 1.686004 49.347081
BAF9 Hoya 1.643278 47.941673
LAFL23 Hoya 1.689 49.475821
LACL4 Hoya 1.669603 51.65903
BAF13 Hoya 1.668916 44.911265
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