BAL2 by Ohara
Obsolete
Unknown
Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Optical Properties
| Refractive Index (nd) | 1.570989 |
|---|---|
| Abbe Number (Vd) | 50.797474 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.365 — 0.9 µm |
$$n(\lambda) = \sqrt{2.42431 - 0.00858474\,\lambda^2 + 0.0147204\,\lambda^{-2} + 0.000550456\,\lambda^{-4} - 3.17074 \times 10^{-5}\,\lambda^{-6} + 2.42076 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 10.0 |
|---|---|
| TCE 100/300°C (10-6/K) | 11.6 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[4.152 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.1 |
|---|---|
| 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 | |
|---|---|---|---|---|
| BAFL2 | Hoya | 1.570989 | 50.858935 | |
| H-BAF2 | CDGM | 1.5697 | 49.452646 | |
| BAF2 | CDGM | 1.569703 | 49.435926 | |
| BAF2 | Hoya | 1.56965 | 49.392725 | |
| BAFL3 | Hoya | 1.571348 | 52.982526 | |
| BALF3 | Sumita | 1.57135 | 53.0 | |
| ADF1 | Hoya | 1.564997 | 52.958253 | |
| BALF50 | Schott | 1.588931 | 51.371228 | |
| B58-53 | Corning | 1.557511 | 52.533062 | |
| KZFN1 | Schott | 1.551149 | 49.637723 |
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| S-BAL2 | Ohara | 1.570989 | 50.799858 | |
| S-BAL3 | Ohara | 1.571351 | 52.952106 | |
| BAL3 | Ohara | 1.571351 | 52.968158 | |
| BAL7 | Ohara | 1.58875 | 51.179278 | |
| BAL5 | Ohara | 1.547393 | 53.550738 | |
| S-BAM3 | Ohara | 1.582673 | 46.423175 | |
| BAM3 | Ohara | 1.582673 | 46.423092 | |
| BAM5 | Ohara | 1.607289 | 49.188575 | |
| PBL2 | Ohara | 1.54072 | 47.23368 | |
| S-TIL2 | Ohara | 1.54072 | 47.227127 |