BAFD8 by Hoya
Standard
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) | 1.72342 |
|---|---|
| Abbe Number (Vd) | 37.99 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{2.88632 - 0.00980272\,\lambda^2 + 0.0276543\,\lambda^{-2} + 0.000890064\,\lambda^{-4} - 3.63091 \times 10^{-5}\,\lambda^{-6} + 7.61811 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.1 |
|---|---|
| TCE 100/300°C (10-6/K) | 8.6 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[5.56908 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.62 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | 1 |
| Acid Resistance | 1 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
General glass Type
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| H-ZBAF21 | CDGM | 1.72341 | 37.991564 | |
| BASF8 | Sumita | 1.72342 | 38.0 | |
| D23-38 | Corning | 1.72349 | 37.995089 | |
| S-BAH28 | Ohara | 1.72342 | 37.955602 | |
| BAH28 | Ohara | 1.72342 | 37.949115 | |
| BAH78 | Ohara | 1.723421 | 38.03427 | |
| BASF51 | Schott | 1.723728 | 38.111094 | |
| ZNSF8 | Sumita | 1.7143 | 38.9 | |
| K-ZnSF8 | Sumita | 1.7143 | 38.9 | |
| K-ZnSF8(M) | Sumita | 1.71143 | 38.9 |
Similar Glasses (Hoya)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| M-LAF81 | Hoya | 1.73077 | 40.5 | |
| MP-LAF81 | Hoya | 1.73077 | 40.5 | |
| BAFD15 | Hoya | 1.701999 | 40.195943 | |
| LAFL6 | Hoya | 1.72 | 42.016239 | |
| BAFD7 | Hoya | 1.70154 | 41.15 | |
| BAFD14 | Hoya | 1.699678 | 34.925493 | |
| ADF455 | Hoya | 1.71852 | 33.456548 | |
| LAF7 | Hoya | 1.749497 | 35.042695 | |
| E-LAF7 | Hoya | 1.7495 | 35.04 | |
| NBFD6 | Hoya | 1.756702 | 36.345258 |