E-FL5 by Hoya
Standard
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) | 1.58144 |
|---|---|
| Abbe Number (Vd) | 40.89 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{2.44658 - 0.010107\,\lambda^2 + 0.0177591\,\lambda^{-2} + 0.000879703\,\lambda^{-4} - 5.70149 \times 10^{-5}\,\lambda^{-6} + 6.09247 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.9 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.1 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[1.75 \times 10^{-6} + 2(1.66 \times 10^{-8})\,\Delta T + 3(-9.67 \times 10^{-11})\,\Delta T^2 + \frac{6.44 \times 10^{-7} + 2(4.37 \times 10^{-10})\,\Delta T}{\lambda - 0.264}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 2.59 |
|---|---|
| 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 | |
|---|---|---|---|---|
| LF5HTi | Schott | 1.58144 | 40.89 | |
| H-QF50 | CDGM | 1.58144 | 40.888972 | |
| QF50GTI | CDGM | 1.58144 | 40.885954 | |
| QF50 | CDGM | 1.58144 | 40.885954 | |
| LF5HT | Schott | 1.581483 | 40.913786 | |
| PBL35Y | Ohara | 1.581591 | 40.855991 | |
| LF5 | Schott | 1.58144 | 40.85 | |
| N-LF5 | Schott | 1.58144 | 40.848909 | |
| B81-41 | Corning | 1.581396 | 40.816116 | |
| LF5 | Sumita | 1.58144 | 40.8 |