BAF1 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) | 1.5569 |
|---|---|
| Abbe Number (Vd) | 48.5 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.27 — 2.0 µm |
$$n(\lambda) = \sqrt{2.38072 - 0.00886285\,\lambda^2 + 0.0141327\,\lambda^{-2} + 0.000778135\,\lambda^{-4} - 6.10401 \times 10^{-5}\,\lambda^{-6} + 4.16523 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 10.8 |
| 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) | 3.02 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 1 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| SBF1 | Hoya | 1.551151 | 49.517289 | |
| KZFN1 | Schott | 1.551149 | 49.637723 | |
| QF70GFI | CDGM | 1.547 | 48.161896 | |
| FEL3 | Hoya | 1.560125 | 47.090971 | |
| BAF2 | Hoya | 1.56965 | 49.392725 | |
| BAF2 | CDGM | 1.569703 | 49.435926 | |
| H-BAF2 | CDGM | 1.5697 | 49.452646 | |
| PBL2 | Ohara | 1.54072 | 47.23368 | |
| H-QF8 | CDGM | 1.54072 | 47.230007 | |
| S-TIL2 | Ohara | 1.54072 | 47.227127 |