SSK1 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) | 1.6172 |
|---|---|
| Abbe Number (Vd) | 54.0 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.27 — 2.0 µm |
$$n(\lambda) = \sqrt{2.56722 - 0.00858307\,\lambda^2 + 0.0172733\,\lambda^{-2} + 2.09726 \times 10^{-5}\,\lambda^{-4} + 4.00812 \times 10^{-5}\,\lambda^{-6} - 1.60603 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 7.2 |
| 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) | 3.63 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 4 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| BSM21 | Ohara | 1.617196 | 54.040511 | |
| BACED1 | Hoya | 1.617203 | 53.945664 | |
| S-BSM21 | Ohara | 1.617195 | 54.062144 | |
| H-ZK20 | CDGM | 1.6172 | 53.913743 | |
| SSK1 | Schott | 1.617201 | 53.912403 | |
| N-SSK2 | Schott | 1.62229 | 53.27 | |
| BSM24 | Ohara | 1.617646 | 55.049782 | |
| BSM9 | Ohara | 1.614047 | 54.971106 | |
| BSM22 | Ohara | 1.622296 | 53.186644 | |
| S-BSM9 | Ohara | 1.614047 | 54.990097 |