SK16 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) | 1.62041 |
|---|---|
| Abbe Number (Vd) | 60.3 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.27 — 2.0 µm |
$$n(\lambda) = \sqrt{2.58436 - 0.0107437\,\lambda^2 + 0.0149436\,\lambda^{-2} + 0.00020008\,\lambda^{-4} + 4.56246 \times 10^{-6}\,\lambda^{-6} - 1.22969 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 8.3 |
| 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) | 3.6 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 2 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 5 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| S-BSM16 | Ohara | 1.620411 | 60.289582 | |
| N-SK16 | Schott | 1.62041 | 60.32 | |
| SK16 | Schott | 1.62041 | 60.323649 | |
| BSM16 | Ohara | 1.62041 | 60.271913 | |
| C20-60 | Corning | 1.620406 | 60.332956 | |
| H-ZK9B | CDGM | 1.62041 | 60.339343 | |
| BSM16C | Ohara | 1.62041 | 60.254106 | |
| H-TK9 | CDGM | 1.62075 | 60.299778 | |
| BACD16 | Hoya | 1.62041 | 60.35 | |
| SK51 | Schott | 1.6209 | 60.310926 |