FF5 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) | 1.5927 |
|---|---|
| Abbe Number (Vd) | 35.45 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{2.47433 - 0.0109553\,\lambda^2 + 0.0192938\,\lambda^{-2} + 0.00144977\,\lambda^{-4} - 0.000110387\,\lambda^{-6} + 1.1136 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 8.6 |
|---|---|
| TCE 100/300°C (10-6/K) | 10.2 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-1.23666 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 2.64 |
|---|---|
| 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 | |
|---|---|---|---|---|
| TIFN5 | Schott | 1.593555 | 35.514529 | |
| S-FTM16 | Ohara | 1.592701 | 35.310075 | |
| FTM16 | Ohara | 1.592701 | 35.296315 | |
| K-CD35 | Sumita | 1.5805 | 34.8 | |
| K-CD35(M) | Sumita | 1.57583 | 35.2 | |
| F5 | Sumita | 1.60342 | 38.0 | |
| H-F1 | CDGM | 1.60342 | 38.010877 | |
| PBM5 | Ohara | 1.60342 | 38.012915 | |
| F1 | CDGM | 1.603417 | 38.01487 | |
| F15 | Schott | 1.605651 | 37.830856 |