BAL14 by Ohara

Obsolete Unknown Environmentally Dangerous

BAL14 by Ohara is an obsolete optical glass. It transmits from 0.36 to 0.90 µm with an nd of 1.568832 and a Vd of 56.339266. It has medium thermal expansion (CTE of 7.3×10⁻⁶/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: 0.360–0.900 µm
Optical Properties
Refractive Index (nd) 1.568832
Abbe Number (Vd) 56.339266
Dispersion Formula Schott
Wavelength Range 0.365 — 0.9 µm
$$n(\lambda) = \sqrt{2.422 - 0.00920016\,\lambda^2 + 0.0137404\,\lambda^{-2} + 0.000348582\,\lambda^{-4} - 1.66465 \times 10^{-5}\,\lambda^{-6} + 1.31375 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 7.3
TCE 100/300°C (10-6/K) 8.5
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.08
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
BAK4 Schott 1.56883 56.130661
H-BAK7A CDGM 1.568828 56.127804
B69-56 Corning 1.568797 56.044859
H-BAK7GT CDGM 1.56883 56.041308
H-BAK7 CDGM 1.56883 56.041308
BAC4 Hoya 1.56883 56.04
BAK4 Sumita 1.56883 56.0
N-BAK4HT Schott 1.56883 55.98
N-BAK4 Schott 1.56883 55.98
BAC6 Hoya 1.574441 56.357089
Similar Glasses (Ohara)
Glass Manufacturer nd Vd Compare
S-BAL14 Ohara 1.568832 56.363897
S-BAL11 Ohara 1.572501 57.74298
BAL11 Ohara 1.572501 57.760854
BAL15Y Ohara 1.556711 58.679177
BAL15 Ohara 1.556711 58.689461
BAL3 Ohara 1.571351 52.968158
S-BAL3 Ohara 1.571351 52.952106
BAL42 Ohara 1.583126 59.373789
S-BAL42 Ohara 1.583126 59.374673
L-BAL42 Ohara 1.583126 59.385694
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