KF3 by Sumita
Obsolete
Very 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) | 1.51454 |
|---|---|
| Abbe Number (Vd) | 54.6 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.27 — 2.0 µm |
$$n(\lambda) = \sqrt{2.25951 - 0.00870179\,\lambda^2 + 0.0116919\,\lambda^{-2} + 0.000507518\,\lambda^{-4} - 4.08958 \times 10^{-5}\,\lambda^{-6} + 2.68012 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 10.7 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 2.61 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 2 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| CF3 | Hoya | 1.51454 | 54.628437 | |
| KF3 | Schott | 1.51454 | 54.702547 | |
| NSL33 | Ohara | 1.514536 | 54.714595 | |
| D263TECO | Schott | 1.523303 | 54.5172 | |
| KDP | Generic Birefringent | 1.509182 | 56.224997 | |
| SBF5 | Hoya | 1.521299 | 52.780677 | |
| C2 | Hoya | 1.51602 | 56.771193 | |
| S-NSL36 | Ohara | 1.517417 | 52.430903 | |
| H-K8 | CDGM | 1.51602 | 56.794825 | |
| NSL2 | Ohara | 1.516016 | 56.800755 |