BASF6 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) | 1.66755 |
|---|---|
| Abbe Number (Vd) | 41.9 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.27 — 2.0 µm |
$$n(\lambda) = \sqrt{2.71337 - 0.00954474\,\lambda^2 + 0.0226869\,\lambda^{-2} + 0.000524196\,\lambda^{-4} + 1.88355 \times 10^{-5}\,\lambda^{-6} + 1.10902 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 8.0 |
| 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) | 3.88 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 3 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| BAH26 | Ohara | 1.667551 | 41.927521 | |
| BASF6 | Schott | 1.667551 | 41.931404 | |
| BAFD6 | Hoya | 1.66755 | 41.933458 | |
| ZBAF17 | CDGM | 1.667554 | 41.957211 | |
| BASF57 | Schott | 1.651474 | 41.901823 | |
| C55-40 | Corning | 1.6555 | 40.115717 | |
| BAH32 | Ohara | 1.669979 | 39.279752 | |
| S-BAH32 | Ohara | 1.669979 | 39.271035 | |
| BASF12 | Schott | 1.669979 | 39.200523 | |
| ADF8 | Hoya | 1.686498 | 42.863902 |