E-FD10 by Hoya
Special
Very Rare
Environmentally Friendly
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) | 1.72825 |
|---|---|
| Abbe Number (Vd) | 28.32 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{2.88152 - 0.0132283\,\lambda^2 + 0.0314556\,\lambda^{-2} + 0.00268517\,\lambda^{-4} - 0.000225775\,\lambda^{-6} + 2.46933 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 9.0 |
|---|---|
| TCE 100/300°C (10-6/K) | 10.9 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-3.45505 \times 10^{-7} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.07 |
|---|---|
| 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
Not in a position to accept new order because of discontinuation.
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| H-ZF4AGT | CDGM | 1.72825 | 28.318797 | |
| H-ZF4A | CDGM | 1.72825 | 28.318797 | |
| ZF4 | CDGM | 1.728251 | 28.3239 | |
| SF10W | Sumita | 1.72825 | 28.3 | |
| SF10 | Sumita | 1.72825 | 28.3 | |
| D28-28 | Corning | 1.728304 | 28.397796 | |
| SF10 | Schott | 1.72825 | 28.41 | |
| S-TIH10 | Ohara | 1.72825 | 28.460599 | |
| PBH10 | Ohara | 1.728249 | 28.4623 | |
| N-SF10 | Schott | 1.72828 | 28.53 |