BAF4 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) | 1.60562 |
|---|---|
| Abbe Number (Vd) | 43.87626 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{2.52418 - 0.0094636\,\lambda^2 + 0.017352\,\lambda^{-2} + 0.00095314\,\lambda^{-4} - 6.07776 \times 10^{-5}\,\lambda^{-6} + 4.60672 \times 10^{-6}\,\lambda^{-8}}$$
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 | |
|---|---|---|---|---|
| H-BAF5 | CDGM | 1.60562 | 43.875621 | |
| BAF5 | CDGM | 1.605623 | 43.890292 | |
| BAF4 | Sumita | 1.60562 | 43.9 | |
| BAF4 | Schott | 1.605621 | 43.929699 | |
| C06-44 | Corning | 1.605608 | 43.942859 | |
| BAM4 | Ohara | 1.60562 | 43.723021 | |
| N-BAF4 | Schott | 1.60568 | 43.72 | |
| S-BAM4 | Ohara | 1.60562 | 43.706978 | |
| TF3 | CDGM | 1.612423 | 44.093486 | |
| BPM4 | Ohara | 1.6134 | 43.841533 |
Similar Glasses (Hoya)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| M-BAF41 | Hoya | 1.605777 | 43.98709 | |
| E-ADF10 | Hoya | 1.6131 | 44.36 | |
| ADF10 | Hoya | 1.613102 | 44.361138 | |
| ADF40 | Hoya | 1.6134 | 44.290061 | |
| LAF45 | Hoya | 1.61396 | 44.29 | |
| ADF4 | Hoya | 1.612498 | 44.873885 | |
| BAFD5 | Hoya | 1.603232 | 42.391075 | |
| BAFD16 | Hoya | 1.6 | 42.456745 | |
| BAF7 | Hoya | 1.608013 | 46.212035 | |
| BAFD3 | Hoya | 1.607171 | 40.359687 |