BAC1 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) | 1.572497 |
|---|---|
| Abbe Number (Vd) | 57.488684 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{2.43251 - 0.00829832\,\lambda^2 + 0.01461\,\lambda^{-2} + 1.53973 \times 10^{-7}\,\lambda^{-4} + 3.72758 \times 10^{-5}\,\lambda^{-6} - 1.76217 \times 10^{-6}\,\lambda^{-8}}$$
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 | |
|---|---|---|---|---|
| H-BAK8 | CDGM | 1.5725 | 57.486797 | |
| B72-57 | Corning | 1.572498 | 57.494511 | |
| BAK1 | Sumita | 1.5725 | 57.5 | |
| BAK1 | Schott | 1.5725 | 57.54931 | |
| N-BAK1 | Schott | 1.5725 | 57.55 | |
| S-BAL11 | Ohara | 1.572501 | 57.74298 | |
| BAL11 | Ohara | 1.572501 | 57.760854 | |
| BAK50 | Schott | 1.567736 | 57.990411 | |
| S-BAL14 | Ohara | 1.568832 | 56.363897 | |
| BAL14 | Ohara | 1.568832 | 56.339266 |
Similar Glasses (Hoya)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| BAC6 | Hoya | 1.574441 | 56.357089 | |
| BAC4 | Hoya | 1.56883 | 56.04 | |
| BAC5 | Hoya | 1.556708 | 58.562365 | |
| 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 | |
| BACD13 | Hoya | 1.59181 | 58.308789 | |
| BACD11 | Hoya | 1.56384 | 60.83 | |
| BAFL4 | Hoya | 1.579572 | 53.705963 |