BAL42 by Ohara

Obsolete Unknown Environmentally Dangerous

BAL42 by Ohara is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.583126 and a Vd of 59.373789. It has dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.334–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.334–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength

No transmission data available.

Transmission Calculator
Valid wavelength range: 0.334–2.325 µm
Optical Properties
Refractive Index (nd) 1.583126
Abbe Number (Vd) 59.373789
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.46861 - 0.00999378\,\lambda^2 + 0.0131158\,\lambda^{-2} + 0.000450523\,\lambda^{-4} - 3.15703 \times 10^{-5}\,\lambda^{-6} + 1.73074 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) —
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) —
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
D-ZK2 CDGM 1.58313 59.381686
SK12 Sumita 1.58313 59.3
SK12 Schott 1.583131 59.448822
BACD12 Hoya 1.583129 59.459639
M-BACD12 Hoya 1.58313 59.46
MC-BACD12 Hoya 1.58313 59.46
MP-BACD12 Hoya 1.58313 59.46
H-ZK2 CDGM 1.58313 59.460082
D-ZK2-25 CDGM 1.58241 59.308255
D-ZK2A-25 CDGM 1.58229 59.453631
Similar Glasses (Ohara)
Glass Manufacturer nd Vd Compare
S-BAL42 Ohara 1.583126 59.374673
L-BAL42 Ohara 1.583126 59.385694
L-BAL42P Ohara 1.58593 59.248294
L-BAL43 Ohara 1.585729 59.69698
S-BAL35R Ohara 1.58913 60.960312
S-BAL35 Ohara 1.58913 61.135024
L-BAL35 Ohara 1.58913 61.152601
BAL35 Ohara 1.58913 61.182174
L-BAL35P Ohara 1.59208 60.993997
BAL35Y Ohara 1.58913 61.233033
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