SK14 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) | 1.60311 |
|---|---|
| Abbe Number (Vd) | 60.7 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.27 — 2.0 µm |
$$n(\lambda) = \sqrt{2.53081 - 0.0106127\,\lambda^2 + 0.0141445\,\lambda^{-2} + 0.000207373\,\lambda^{-4} + 4.81615 \times 10^{-6}\,\lambda^{-6} - 2.46538 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 8.0 |
| 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) | 3.44 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 2 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 4 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| BACD14 | Hoya | 1.60311 | 60.7 | |
| BSM14 | Ohara | 1.603112 | 60.704896 | |
| BSM51Y | Ohara | 1.603109 | 60.651225 | |
| S-BSM14 | Ohara | 1.603112 | 60.64108 | |
| H-ZK14 | CDGM | 1.60311 | 60.603787 | |
| N-SK14 | Schott | 1.60311 | 60.6 | |
| SK14 | Schott | 1.60311 | 60.596819 | |
| FCD600 | Hoya | 1.5941 | 60.47 | |
| BACD7 | Hoya | 1.607292 | 59.474776 | |
| H-ZK7 | CDGM | 1.613095 | 60.614383 |