BAC2 by Hoya
Obsolete
Unknown
Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
No transmission data available.
Optical Properties
| Refractive Index (nd) | 1.539961 |
|---|---|
| Abbe Number (Vd) | 59.721586 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{2.33668 - 0.00850037\,\lambda^2 + 0.0125446\,\lambda^{-2} + 0.000141709\,\lambda^{-4} + 9.33908 \times 10^{-6}\,\lambda^{-6} - 3.19755 \times 10^{-7}\,\lambda^{-8}}$$
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 | |
|---|---|---|---|---|
| H-BAK2 | CDGM | 1.53996 | 59.724182 | |
| N-BAK2 | Schott | 1.53996 | 59.71 | |
| BAK2 | Schott | 1.53996 | 59.708588 | |
| BAK2 | Sumita | 1.53996 | 59.7 | |
| B39-59 | Corning | 1.539505 | 59.712433 | |
| S-BAL12 | Ohara | 1.539956 | 59.462478 | |
| BAL12 | Ohara | 1.539955 | 59.454008 | |
| H-BAK1 | CDGM | 1.53028 | 60.466139 | |
| H-K11 | CDGM | 1.52638 | 60.15737 | |
| ZK1 | Schott | 1.533149 | 57.980912 |