K-PSK11 by Sumita
Obsolete
Very Rare
Environmentally Friendly
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) | 1.5658 |
|---|---|
| Abbe Number (Vd) | 61.0 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36 — 1.55 µm |
$$n(\lambda) = \sqrt{2.41587 - 0.00914077\,\lambda^2 + 0.0128692\,\lambda^{-2} + 0.000199176\,\lambda^{-4} + 2.79584 \times 10^{-6}\,\lambda^{-6} + 8.16729 \times 10^{-8}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 8.2 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.3 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[3.62 \times 10^{-7} + 2(2 \times 10^{-8})\,\Delta T + 3(-2.86 \times 10^{-11})\,\Delta T^2 + \frac{4.27 \times 10^{-7} + 2(1.78 \times 10^{-10})\,\Delta T}{\lambda - 0.218}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.08 |
|---|---|
| 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 | |
|---|---|---|---|---|
| B64-61 | Corning | 1.564005 | 60.964853 | |
| L-PHL1 | Ohara | 1.56455 | 60.818065 | |
| BACD11 | Hoya | 1.56384 | 60.83 | |
| N-SK11 | Schott | 1.56384 | 60.8 | |
| SK11 | Schott | 1.56384 | 60.798869 | |
| H-BAK6 | CDGM | 1.56388 | 60.764747 | |
| BAL41 | Ohara | 1.563839 | 60.695914 | |
| S-BAL41 | Ohara | 1.563839 | 60.666575 | |
| BAL50 | Ohara | 1.559625 | 61.172671 | |
| S-BAL50 | Ohara | 1.559625 | 61.172671 |
Similar Glasses (Sumita)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| P-SK11 | Sumita | 1.5658 | 61.0 | |
| SK11 | Sumita | 1.56384 | 60.8 | |
| K-SKLD300 | Sumita | 1.5642 | 60.4 | |
| K-PSK11(M) | Sumita | 1.55985 | 61.0 | |
| SK20 | Sumita | 1.55963 | 61.2 | |
| K-SKLD300(M) | Sumita | 1.56124 | 60.1 | |
| PSK2 | Sumita | 1.56873 | 63.1 | |
| K-SKLD5(M) | Sumita | 1.58606 | 61.0 | |
| K-SKLD120(M) | Sumita | 1.58401 | 59.5 | |
| SK12 | Sumita | 1.58313 | 59.3 |