PSK50 by Schott
Obsolete
Unknown
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) | 1.557529 |
|---|---|
| Abbe Number (Vd) | 67.282893 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.32203\,\lambda^2}{\lambda^2 - 0.00727865} + \frac{0.0723081\,\lambda^2}{\lambda^2 - 0.0279922} + \frac{0.867\,\lambda^2}{\lambda^2 - 91.0643}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 8.6 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.9 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-5.28 \times 10^{-6} + 2(4.39 \times 10^{-9})\,\Delta T + 3(8.73 \times 10^{-11})\,\Delta T^2 + \frac{4.19 \times 10^{-7} + 2(1.05 \times 10^{-9})\,\Delta T}{\lambda - 0.145}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 2.93 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
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 | |
|---|---|---|---|---|
| B52-67 | Corning | 1.552198 | 67.059229 | |
| K-PMK155(M) | Sumita | 1.55471 | 68.0 | |
| K-PMK155 | Sumita | 1.5582 | 68.2 | |
| QUARTZ-E | Generic Birefringent | 1.553398 | 68.797763 | |
| QUARTZ | Generic Birefringent | 1.544296 | 70.132045 | |
| S-FPM5 | Ohara | 1.552 | 70.697068 | |
| PCD3 | Hoya | 1.55232 | 63.424095 | |
| H-BAK4 | CDGM | 1.55248 | 63.36549 | |
| K-GFK70(M) | Sumita | 1.56627 | 71.3 | |
| D-ZPK7-25 | CDGM | 1.56854 | 71.235367 |
Similar Glasses (Schott)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| N-PSK3 | Schott | 1.55232 | 63.46 | |
| PSK3 | Schott | 1.552322 | 63.456253 | |
| N-PSK58 | Schott | 1.56907 | 71.205585 | |
| P-PK53 | Schott | 1.5269 | 66.22 | |
| PSK2 | Schott | 1.56873 | 63.083014 | |
| PSK54 | Schott | 1.58599 | 64.599863 | |
| N-PSK57 | Schott | 1.5924 | 68.398667 | |
| PK3 | Schott | 1.525419 | 64.662422 | |
| PK50 | Schott | 1.52054 | 69.712402 | |
| PK2 | Schott | 1.518211 | 65.054286 |