FC5 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) | 1.48749 |
|---|---|
| Abbe Number (Vd) | 70.44 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{2.18941 - 0.00990449\,\lambda^2 + 0.00864034\,\lambda^{-2} + 0.000222631\,\lambda^{-4} - 1.22919 \times 10^{-5}\,\lambda^{-6} + 5.93863 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 9.3 |
|---|---|
| TCE 100/300°C (10-6/K) | 10.2 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-6.6046 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 2.45 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 5 |
|---|---|
| Stain Resistance | 5 |
| Acid Resistance | 5 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
General glass Type
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| H-QK3L | CDGM | 1.48749 | 70.440487 | |
| H-QK3LGTI | CDGM | 1.48749 | 70.440487 | |
| D-QK3L | CDGM | 1.48749 | 70.440487 | |
| N-FK5 | Schott | 1.48749 | 70.41 | |
| FK5HTi | Schott | 1.48748 | 70.47 | |
| FK5 | Schott | 1.48749 | 70.405771 | |
| FK5 | Sumita | 1.48749 | 70.4 | |
| K-FK5 | Sumita | 1.48749 | 70.4 | |
| A87-70 | Corning | 1.487248 | 70.500557 | |
| S-FSL5Y | Ohara | 1.48749 | 70.354425 |