SSK3 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) | 1.61484 |
|---|---|
| Abbe Number (Vd) | 51.1 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.27 — 2.0 µm |
$$n(\lambda) = \sqrt{2.55889 - 0.00919782\,\lambda^2 + 0.0167284\,\lambda^{-2} + 0.000449608\,\lambda^{-4} - 1.40614 \times 10^{-5}\,\lambda^{-6} + 1.51489 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 7.6 |
| 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) | 3.61 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 3 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| BACED3 | Hoya | 1.614838 | 51.1513 | |
| SSK3 | Schott | 1.614837 | 51.1603 | |
| BSM23 | Ohara | 1.614839 | 51.172377 | |
| BSM28 | Ohara | 1.617722 | 49.83232 | |
| N-SSK8 | Schott | 1.61773 | 49.83 | |
| S-BSM28 | Ohara | 1.617722 | 49.815052 | |
| SSKN8 | Schott | 1.61772 | 49.771451 | |
| BACED9 | Hoya | 1.620119 | 49.823001 | |
| C0550 | Corning | 1.605004 | 50.419332 | |
| C05-50 | Corning | 1.605004 | 50.419332 |