K-CSK158 by Sumita
Standard
Rare
Precision Molding
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) | 1.584 |
|---|---|
| Abbe Number (Vd) | 56.9 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36 — 1.55 µm |
$$n(\lambda) = \sqrt{2.46815 - 0.00874877\,\lambda^2 + 0.0142855\,\lambda^{-2} + 0.000333517\,\lambda^{-4} - 1.33495 \times 10^{-5}\,\lambda^{-6} + 9.38827 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 9.0 |
|---|---|
| TCE 100/300°C (10-6/K) | 11.2 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-3.87 \times 10^{-6} + 2(1.28 \times 10^{-8})\,\Delta T + 3(-1.16 \times 10^{-10})\,\Delta T^2 + \frac{5.43 \times 10^{-7} + 2(5.44 \times 10^{-10})\,\Delta T}{\lambda - 0.179}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.06 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 2 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 3 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| IRGN6 | Generic IR | 1.589096 | 56.33564 | |
| BAC6 | Hoya | 1.574441 | 56.357089 | |
| H-BAK8 | CDGM | 1.5725 | 57.486797 | |
| BAC1 | Hoya | 1.572497 | 57.488684 | |
| B72-57 | Corning | 1.572498 | 57.494511 | |
| BAK1 | Schott | 1.5725 | 57.54931 | |
| N-BAK1 | Schott | 1.5725 | 57.55 | |
| SK13 | Schott | 1.591809 | 58.300621 | |
| BACD13 | Hoya | 1.59181 | 58.308789 | |
| S-BAL11 | Ohara | 1.572501 | 57.74298 |
Similar Glasses (Sumita)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| K-CSK158(M) | Sumita | 1.58157 | 56.7 | |
| BAK1 | Sumita | 1.5725 | 57.5 | |
| K-SKLD200(M) | Sumita | 1.58355 | 58.8 | |
| K-SKLD200 | Sumita | 1.5866 | 59.0 | |
| BAK4 | Sumita | 1.56883 | 56.0 | |
| K-CSK120(M) | Sumita | 1.58445 | 59.2 | |
| SK12 | Sumita | 1.58313 | 59.3 | |
| K-SKLD120(M) | Sumita | 1.58401 | 59.5 | |
| CSK12 | Sumita | 1.5865 | 59.6 | |
| K-CSK120 | Sumita | 1.587 | 59.6 |