KZFS4 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) | 1.6134 |
|---|---|
| Abbe Number (Vd) | 43.8 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.27 — 2.0 µm |
$$n(\lambda) = \sqrt{2.54813 - 0.0130189\,\lambda^2 + 0.019202\,\lambda^{-2} + 0.0004294\,\lambda^{-4} + 4.202 \times 10^{-6}\,\lambda^{-6} + 1.46101 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 4.9 |
| 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) | 3.15 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 4 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| BPM4 | Ohara | 1.6134 | 43.841533 | |
| H-TF3L | CDGM | 1.6134 | 44.107022 | |
| TF3 | CDGM | 1.612423 | 44.093486 | |
| BPM51 | Ohara | 1.613397 | 44.266767 | |
| S-NBM51 | Ohara | 1.613397 | 44.267706 | |
| KZFSN4 | Schott | 1.6134 | 44.29 | |
| ADF40 | Hoya | 1.6134 | 44.290061 | |
| LAF45 | Hoya | 1.61396 | 44.29 | |
| KZFS1 | Schott | 1.613099 | 44.339473 | |
| E-ADF10 | Hoya | 1.6131 | 44.36 |