BAFD4 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) | 1.651278 |
|---|---|
| Abbe Number (Vd) | 38.312578 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{2.65632 - 0.00909046\,\lambda^2 + 0.0229875\,\lambda^{-2} + 0.000847813\,\lambda^{-4} - 1.74324 \times 10^{-5}\,\lambda^{-6} + 3.73113 \times 10^{-6}\,\lambda^{-8}}$$
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 | |
|---|---|---|---|---|
| BASF4 | Sumita | 1.65128 | 38.3 | |
| K-BaSF4 | Sumita | 1.65128 | 38.3 | |
| BASF10 | Schott | 1.65016 | 39.148818 | |
| C51-39 | Corning | 1.650206 | 39.193419 | |
| BASF10 | Sumita | 1.65016 | 39.3 | |
| BAH30 | Ohara | 1.650158 | 39.390461 | |
| H-TF5 | CDGM | 1.6541 | 39.539424 | |
| KZFSN5 | Schott | 1.65412 | 39.63 | |
| S-NBH5 | Ohara | 1.654115 | 39.682794 | |
| BPH5 | Ohara | 1.654115 | 39.687638 |
Similar Glasses (Hoya)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| ATF2 | Hoya | 1.65052 | 38.036939 | |
| BAFD10 | Hoya | 1.650157 | 39.343065 | |
| NBFD38 | Hoya | 1.65253 | 39.48 | |
| E-ADF50 | Hoya | 1.65412 | 39.62 | |
| ADF50 | Hoya | 1.654118 | 39.624202 | |
| ADF355 | Hoya | 1.6445 | 40.762285 | |
| BAFD2 | Hoya | 1.664457 | 35.887705 | |
| BAFD1 | Hoya | 1.626057 | 39.085725 | |
| ADF405 | Hoya | 1.6765 | 37.477902 | |
| F6 | Hoya | 1.636356 | 35.340304 |