SSK50 by Schott
Obsolete
Unknown
Environmentally Dangerous
SSK50 by Schott is an obsolete optical glass. It transmits from 0.36 to 2.33 µm with an nd of 1.617954 and a Vd of 52.609086. It has medium thermal expansion (CTE of 7.4×10⁻⁶/K) and dangerous environmental properties.
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) | 1.617954 |
|---|---|
| Abbe Number (Vd) | 52.609086 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.45563\,\lambda^2}{\lambda^2 - 0.00870104} + \frac{0.113576\,\lambda^2}{\lambda^2 - 0.0378429} + \frac{0.969521\,\lambda^2}{\lambda^2 - 110.109}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.4 |
|---|---|
| TCE 100/300°C (10-6/K) | 8.5 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[2.42 \times 10^{-7} + 2(1.18 \times 10^{-8})\,\Delta T + 3(-2.3 \times 10^{-11})\,\Delta T^2 + \frac{5.02 \times 10^{-7} + 2(5.74 \times 10^{-10})\,\Delta T}{\lambda - 0.22}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Chemical Resistance
| Climatic Resistance | — |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
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Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| SSK2 | Sumita | 1.6223 | 53.1 | |
| BACED2 | Hoya | 1.6223 | 53.11226 | |
| S-BSM22 | Ohara | 1.622296 | 53.169067 | |
| H-ZBAF1 | CDGM | 1.6223 | 53.170869 | |
| C23-53 | Corning | 1.622502 | 53.14721 | |
| BSM22 | Ohara | 1.622296 | 53.186644 | |
| H-ZK20 | CDGM | 1.6172 | 53.913743 | |
| BACED1 | Hoya | 1.617203 | 53.945664 | |
| SSK1 | Sumita | 1.6172 | 54.0 | |
| K-SSK1 | Sumita | 1.6172 | 54.0 |
Similar Glasses (Schott)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| SSK2 | Schott | 1.622301 | 53.154887 | |
| N-SSK2 | Schott | 1.62229 | 53.27 | |
| SSK1 | Schott | 1.617201 | 53.912403 | |
| SSK3 | Schott | 1.614837 | 51.1603 | |
| SSK51 | Schott | 1.603607 | 53.631714 | |
| SSK4A | Schott | 1.61765 | 55.141867 | |
| N-SSK20 | Schott | 1.62568 | 50.2 | |
| N-SSK8 | Schott | 1.61773 | 49.83 | |
| SSKN8 | Schott | 1.61772 | 49.771451 | |
| SK8 | Schott | 1.611171 | 55.917724 |