BAF8 by Sumita
Obsolete
Very Rare
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) | 1.62374 |
|---|---|
| Abbe Number (Vd) | 47.1 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.27 — 2.0 µm |
$$n(\lambda) = \sqrt{2.58253 - 0.00932098\,\lambda^2 + 0.0182951\,\lambda^{-2} + 0.000527322\,\lambda^{-4} - 1.41044 \times 10^{-5}\,\lambda^{-6} + 2.14836 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 8.2 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.66 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 4 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| BAM8 | Ohara | 1.62374 | 47.09722 | |
| BAF8 | Hoya | 1.623739 | 47.054197 | |
| E-BAF8 | Hoya | 1.62374 | 47.05 | |
| BAF8 | Schott | 1.62374 | 47.000909 | |
| C24-47 | Corning | 1.624 | 46.940278 | |
| N-BAF52 | Schott | 1.60863 | 46.6 | |
| BAF52 | Schott | 1.608589 | 46.44241 | |
| BAF7 | Hoya | 1.608013 | 46.212035 | |
| H-BAF6 | CDGM | 1.60801 | 46.202418 | |
| ZBAF2 | CDGM | 1.639616 | 48.230454 |