E-F3 by Hoya
Special
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) | 1.61293 |
|---|---|
| Abbe Number (Vd) | 36.96 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{2.53627 - 0.0106104\,\lambda^2 + 0.0212338\,\lambda^{-2} + 0.000990121\,\lambda^{-4} - 5.99843 \times 10^{-5}\,\lambda^{-6} + 8.23544 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.7 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.6 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[3.40553 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
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
Not in a position to accept new order because of discontinuation.
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| F2 | CDGM | 1.612929 | 36.986002 | |
| PBM3 | Ohara | 1.612929 | 36.994096 | |
| H-F2 | CDGM | 1.61293 | 37.004441 | |
| S-TIM3 | Ohara | 1.612929 | 37.005342 | |
| F3 | Sumita | 1.61293 | 36.9 | |
| F3 | Schott | 1.612931 | 37.038954 | |
| H-F3 | CDGM | 1.61659 | 36.651688 | |
| PBM4 | Ohara | 1.616588 | 36.632973 | |
| F4 | Schott | 1.616592 | 36.628072 | |
| F3 | CDGM | 1.616592 | 36.627394 |