K-ZnSF8(M) by Sumita
Standard
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) | 1.71143 |
|---|---|
| Abbe Number (Vd) | 38.9 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36 — 1.55 µm |
$$n(\lambda) = \sqrt{2.85084 - 0.0120061\,\lambda^2 + 0.0259048\,\lambda^{-2} + 0.000905615\,\lambda^{-4} - 2.809 \times 10^{-5}\,\lambda^{-6} + 4.69592 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 4.9 |
|---|---|
| TCE 100/300°C (10-6/K) | 6.0 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[1.49 \times 10^{-5} + 2(1.99 \times 10^{-8})\,\Delta T + 3(-2.6 \times 10^{-10})\,\Delta T^2 + \frac{8.88 \times 10^{-7} + 2(7.78 \times 10^{-10})\,\Delta T}{\lambda - 0.234}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.72 |
|---|---|
| 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 | |
|---|---|---|---|---|
| N-BASF64 | Schott | 1.704 | 39.38 | |
| BASF64A | Schott | 1.704 | 39.384429 | |
| BAH71 | Ohara | 1.701998 | 40.097173 | |
| BAFD15 | Hoya | 1.701999 | 40.195943 | |
| BAH78 | Ohara | 1.723421 | 38.03427 | |
| BASF51 | Schott | 1.723728 | 38.111094 | |
| H-ZBAF21 | CDGM | 1.72341 | 37.991564 | |
| BAFD8 | Hoya | 1.72342 | 37.99 | |
| D23-38 | Corning | 1.72349 | 37.995089 | |
| S-BAH28 | Ohara | 1.72342 | 37.955602 |