BAH11 by Ohara

Obsolete Unknown Environmentally Dangerous

BAH11 by Ohara is an obsolete optical glass. It transmits from 0.40 to 0.90 µm with an nd of 1.666718 and a Vd of 48.317266. It has medium thermal expansion (CTE of 7.4×10⁻⁶/K) and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.365–0.9 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.365–0.9 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.400–0.900 µm
Optical Properties
Refractive Index (nd) 1.666718
Abbe Number (Vd) 48.317266
Dispersion Formula Schott
Wavelength Range 0.365 — 0.9 µm
$$n(\lambda) = \sqrt{2.71757 - 0.00866623\,\lambda^2 + 0.0211629\,\lambda^{-2} + 0.000153077\,\lambda^{-4} + 3.22731 \times 10^{-5}\,\lambda^{-6} + 6.60227 \times 10^{-8}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.4
TCE 100/300°C (10-6/K) 8.5
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[3.0607 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.81
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
BAF11 Hoya 1.66672 48.3
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
BAF21 Hoya 1.66422 48.941939
BAFN3 Sumita 1.66422 49.2
K-BaFn3 Sumita 1.66422 49.2
K-LCV93 Sumita 1.6652 47.3
CALCITE Generic Birefringent 1.658643 48.541403
Similar Glasses (Ohara)
Glass Manufacturer nd Vd Compare
S-BAH11 Ohara 1.666718 48.325247
BAH10 Ohara 1.670029 47.253429
S-BAH10 Ohara 1.670029 47.230916
BSM25 Ohara 1.658441 50.861723
S-BSM25 Ohara 1.658441 50.877554
S-LAL56 Ohara 1.677898 50.722184
LAL56 Ohara 1.677898 50.723364
BAM9 Ohara 1.643279 47.850606
BAH13 Ohara 1.668921 44.987354
S-LAM59 Ohara 1.697002 48.516066
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