TAFD45 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) | 1.95375 |
|---|---|
| Abbe Number (Vd) | 32.32 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{3.67296 - 0.0151805\,\lambda^2 + 0.0457187\,\lambda^{-2} + 0.00218622\,\lambda^{-4} - 9.93742 \times 10^{-5}\,\lambda^{-6} + 1.49047 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.0 |
|---|---|
| TCE 100/300°C (10-6/K) | 8.5 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[8.36 \times 10^{-7} + 2(9.08 \times 10^{-9})\,\Delta T + 3(-4.59 \times 10^{-11})\,\Delta T^2 + \frac{9.61 \times 10^{-7} + 2(1.39 \times 10^{-9})\,\Delta T}{\lambda - 0.246}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 5.1 |
|---|---|
| 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 | |
|---|---|---|---|---|
| S-LAH98 | Ohara | 1.953749 | 32.324727 | |
| H-ZLAF89L | CDGM | 1.95375 | 32.30879 | |
| H-ZLAF89LA | CDGM | 1.95375 | 32.276235 | |
| N-LASF55 | Schott | 1.9538 | 30.56 | |
| CAWO4-E | Generic Birefringent | 1.937211 | 33.304949 | |
| S-LAH88 | Ohara | 1.916499 | 31.604148 | |
| CAWO4 | Generic Birefringent | 1.920414 | 34.953592 | |
| LASF18A | Schott | 1.913482 | 32.364492 | |
| CAMOO4 | Generic Birefringent | 1.992539 | 28.832428 | |
| K-LaSFn23 | Sumita | 1.911 | 35.2 |
Similar Glasses (Hoya)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| TAFD45L | Hoya | 1.95375 | 32.32 | |
| M-TAFD405 | Hoya | 1.9515 | 29.83 | |
| MP-TAFD405 | Hoya | 1.9515 | 29.83 | |
| TAFD21 | Hoya | 1.9326 | 27.921009 | |
| TAFD31 | Hoya | 1.922501 | 35.946005 | |
| NBFD265 | Hoya | 1.95203 | 26.2 | |
| TAFD35L | Hoya | 1.91082 | 35.25 | |
| TAFD35 | Hoya | 1.91082 | 35.25 | |
| TAFD25 | Hoya | 1.90366 | 31.32 | |
| TAFD25L | Hoya | 1.90366 | 31.32 |