E-FL6 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) | 1.56732 |
|---|---|
| Abbe Number (Vd) | 42.84 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{2.40797 - 0.0111356\,\lambda^2 + 0.0157047\,\lambda^{-2} + 0.000991865\,\lambda^{-4} - 7.99347 \times 10^{-5}\,\lambda^{-6} + 7.09855 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 6.7 |
|---|---|
| TCE 100/300°C (10-6/K) | 7.9 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[3.42721 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 2.53 |
|---|---|
| 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 | |
|---|---|---|---|---|
| LF6HT | Schott | 1.56732 | 42.847665 | |
| PBL26 | Ohara | 1.567322 | 42.831708 | |
| PBL26Y | Ohara | 1.567322 | 42.855569 | |
| S-TIL26 | Ohara | 1.567322 | 42.817076 | |
| H-QF56 | CDGM | 1.56732 | 42.810117 | |
| LF6 | Sumita | 1.56732 | 42.8 | |
| LF1 | Sumita | 1.57309 | 42.7 | |
| PBL21 | Ohara | 1.573092 | 42.576094 | |
| IRG7 | Generic IR | 1.564424 | 43.736647 | |
| LF8 | Schott | 1.564435 | 43.75028 |
Similar Glasses (Hoya)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| FL6 | Hoya | 1.567324 | 42.843119 | |
| FL1 | Hoya | 1.573091 | 42.586108 | |
| FL7 | Hoya | 1.57501 | 41.509668 | |
| FL57 | Hoya | 1.576163 | 41.39334 | |
| FL4 | Hoya | 1.578447 | 41.707529 | |
| FL3 | Hoya | 1.58215 | 42.028564 | |
| FEL4 | Hoya | 1.561379 | 45.226718 | |
| E-FL5 | Hoya | 1.58144 | 40.89 | |
| FL5 | Hoya | 1.581437 | 40.887611 | |
| FEL7 | Hoya | 1.54883 | 45.439785 |