BAL3 by Ohara

Obsolete Unknown Environmentally Dangerous

BAL3 by Ohara is an obsolete optical glass. It transmits from 0.35 to 0.90 µm with an nd of 1.571351 and a Vd of 52.968158. It has medium thermal expansion (CTE of 9.7×10⁻⁶/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: 0.350–0.900 µm
Optical Properties
Refractive Index (nd) 1.571351
Abbe Number (Vd) 52.968158
Dispersion Formula Schott
Wavelength Range 0.365 — 0.9 µm
$$n(\lambda) = \sqrt{2.42618 - 0.00781539\,\lambda^2 + 0.0147662\,\lambda^{-2} + 0.000366904\,\lambda^{-4} - 1.05269 \times 10^{-5}\,\lambda^{-6} + 1.03937 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 9.7
TCE 100/300°C (10-6/K) 11.8
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-3.144 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.14
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
BAFL3 Hoya 1.571348 52.982526
BALF3 Sumita 1.57135 53.0
ADF1 Hoya 1.564997 52.958253
BAFL4 Hoya 1.579572 53.705963
BALF4 Schott 1.579569 53.708241
H-BAF3 CDGM 1.57957 53.711637
N-BALF4 Schott 1.57956 53.87
BPG2 Sumita 1.5592 53.9
K-BPG2 Sumita 1.5592 53.9
B58-53 Corning 1.557511 52.533062
Similar Glasses (Ohara)
Glass Manufacturer nd Vd Compare
S-BAL3 Ohara 1.571351 52.952106
S-BAL2 Ohara 1.570989 50.799858
BAL2 Ohara 1.570989 50.797474
BAL7 Ohara 1.58875 51.179278
BAL5 Ohara 1.547393 53.550738
BAL14 Ohara 1.568832 56.339266
S-BAL14 Ohara 1.568832 56.363897
S-BAL11 Ohara 1.572501 57.74298
BAL11 Ohara 1.572501 57.760854
SSL2 Ohara 1.529441 51.722557
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