BAH26 by Ohara

Obsolete Unknown Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.3–2.4 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.3–2.4 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.350–0.900 µm
Optical Properties
Refractive Index (nd) 1.667551
Abbe Number (Vd) 41.927521
Dispersion Formula Schott
Wavelength Range 0.3 — 2.4 µm
$$n(\lambda) = \sqrt{2.71372 - 0.00934815\,\lambda^2 + 0.0221907\,\lambda^{-2} + 0.00074155\,\lambda^{-4} - 2.18722 \times 10^{-5}\,\lambda^{-6} + 3.82101 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.5
TCE 100/300°C (10-6/K) 8.8
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[4.645 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.8
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance 51
Alkali Resistance —
Phosphate Resistance 2
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
BASF6 Schott 1.667551 41.931404
BAFD6 Hoya 1.66755 41.933458
BASF6 Sumita 1.66755 41.9
ZBAF17 CDGM 1.667554 41.957211
BASF57 Schott 1.651474 41.901823
C55-40 Corning 1.6555 40.115717
ADF8 Hoya 1.686498 42.863902
BASF12 Schott 1.669979 39.200523
BASF12 Sumita 1.66998 39.2
N-KZFS5 Schott 1.65412 39.7
Similar Glasses (Ohara)
Glass Manufacturer nd Vd
BAH32 Ohara 1.669979 39.279752
S-BAH32 Ohara 1.669979 39.271035
BPH5 Ohara 1.654115 39.687638
S-NBH5 Ohara 1.654115 39.682794
BAH13 Ohara 1.668921 44.987354
BPH35 Ohara 1.644496 40.817749
BAH30 Ohara 1.650158 39.390461
BAH54 Ohara 1.695 42.167111
S-BAH54 Ohara 1.695 42.167111
S-NBH52V Ohara 1.673 38.256077
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