FD11 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
Transmission Calculator
Optical Properties
| Refractive Index (nd) | 1.784715 |
|---|---|
| Abbe Number (Vd) | 25.704276 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.25 — 1.55 µm |
$$n(\lambda) = \sqrt{3.08005 - 0.0235112\,\lambda^2 + 0.0194609\,\lambda^{-2} + 0.00965107\,\lambda^{-4} - 0.00124478\,\lambda^{-6} + 8.77739 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 8.0 |
|---|---|
| TCE 100/300°C (10-6/K) | 93.0 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[1.03738 \times 10^{-5} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.91 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | 0 |
| Acid Resistance | 3 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| SF11 | Sumita | 1.78472 | 25.7 | |
| SF11W | Sumita | 1.78472 | 25.7 | |
| PBH11W | Ohara | 1.784718 | 25.712726 | |
| PBH11 | Ohara | 1.784718 | 25.712726 | |
| H-ZF13GT | CDGM | 1.78472 | 25.720045 | |
| H-ZF13 | CDGM | 1.78472 | 25.720045 | |
| S-TIH11 | Ohara | 1.784723 | 25.683446 | |
| N-SF11 | Schott | 1.78472 | 25.68 | |
| TIH11 | Ohara | 1.784723 | 25.677885 | |
| ZF13 | CDGM | 1.784724 | 25.754051 |