TAFD55-W by Hoya
Preferred
Very Common
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) | 2.001 |
|---|---|
| Abbe Number (Vd) | 29.13 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{3.83176 - 0.0152664\,\lambda^2 + 0.0545738\,\lambda^{-2} + 0.00231093\,\lambda^{-4} - 4.44762 \times 10^{-5}\,\lambda^{-6} + 1.61439 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.3 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.0 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-4.17 \times 10^{-7} + 2(8.97 \times 10^{-9})\,\Delta T + 3(-4.73 \times 10^{-11})\,\Delta T^2 + \frac{1.05 \times 10^{-6} + 2(8.82 \times 10^{-10})\,\Delta T}{\lambda - 0.262}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 5.12 |
|---|---|
| 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
Recommended glass type
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| S-LAH99 | Ohara | 2.001 | 29.139473 | |
| S-LAH99W | Ohara | 2.001 | 29.139473 | |
| REALVIEW_2.0 | Schott | 2.001017 | 29.14 | |
| H-ZLAF91 | CDGM | 2.001 | 29.151347 | |
| H-ZLAF92 | CDGM | 2.0033 | 28.316305 | |
| H-ZLAF92A | CDGM | 2.0033 | 28.275906 | |
| S-LAH79 | Ohara | 2.0033 | 28.27328 | |
| CAMOO4 | Generic Birefringent | 1.992539 | 28.832428 | |
| K-BOC20 | Sumita | 2.0054 | 27.7 | |
| CAMOO4-E | Generic Birefringent | 2.002336 | 26.628162 |