SFLD60 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) | 1.80645 |
|---|---|
| Abbe Number (Vd) | 24.4 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.27 — 2.0 µm |
$$n(\lambda) = \sqrt{3.1186 - 0.0122354\,\lambda^2 + 0.0434122\,\lambda^{-2} + 0.0030431\,\lambda^{-4} - 0.000175569\,\lambda^{-6} + 2.62312 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 14.5 |
| 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) | 3.29 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 1 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| SF6G05 | Schott | 1.80906 | 25.27 | |
| N-SF6HTultra | Schott | 1.80518 | 25.36 | |
| N-SF6 | Schott | 1.80518 | 25.36 | |
| N-SF6HT | Schott | 1.80518 | 25.36 | |
| ZF7 | CDGM | 1.806277 | 25.380144 | |
| SFL6 | Schott | 1.80518 | 25.39 | |
| S-TIH6 | Ohara | 1.805181 | 25.425363 | |
| SF6HT | Schott | 1.80518 | 25.43 | |
| SF6 | Schott | 1.80518 | 25.43 | |
| TIH6 | Ohara | 1.805181 | 25.432057 |