BALF6 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) | 1.58904 |
|---|---|
| Abbe Number (Vd) | 53.2 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.27 — 2.0 µm |
$$n(\lambda) = \sqrt{2.48118 - 0.00936638\,\lambda^2 + 0.0152949\,\lambda^{-2} + 0.000333951\,\lambda^{-4} - 1.84592 \times 10^{-6}\,\lambda^{-6} + 5.77565 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 7.9 |
| 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) | 3.3 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 2 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| BAFL6 | Hoya | 1.589036 | 52.935166 | |
| BAFL4 | Hoya | 1.579572 | 53.705963 | |
| BALF4 | Schott | 1.579569 | 53.708241 | |
| H-BAF3 | CDGM | 1.57957 | 53.711637 | |
| N-BALF4 | Schott | 1.57956 | 53.87 | |
| BALF50 | Schott | 1.588931 | 51.371228 | |
| BAL7 | Ohara | 1.58875 | 51.179278 | |
| SSK51 | Schott | 1.603607 | 53.631714 | |
| ADC2 | Hoya | 1.596998 | 55.291198 | |
| BAFL3 | Hoya | 1.571348 | 52.982526 |