E-CF6 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) | 1.51742 |
|---|---|
| Abbe Number (Vd) | 52.15 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{2.26689 - 0.00938662\,\lambda^2 + 0.0121742\,\lambda^{-2} + 0.00050769\,\lambda^{-4} - 3.35734 \times 10^{-5}\,\lambda^{-6} + 2.9059 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 8.2 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.2 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-1.62453 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 2.43 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 2 |
|---|---|
| Stain Resistance | 1 |
| Acid Resistance | 1 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
General glass Type
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| H-KF6 | CDGM | 1.51742 | 52.149249 | |
| KF6 | Sumita | 1.51742 | 52.2 | |
| KF6 | Schott | 1.517421 | 52.200088 | |
| NSL36 | Ohara | 1.517417 | 52.412251 | |
| S-NSL36 | Ohara | 1.517417 | 52.430903 | |
| SSL5 | Ohara | 1.521299 | 52.553447 | |
| K-SKF6 | Sumita | 1.512 | 52.1 | |
| ADP | Generic Birefringent | 1.523454 | 52.25678 | |
| N-KF9 | Schott | 1.52346 | 51.54 | |
| KF9 | Schott | 1.523412 | 51.492996 |