SF53 by Schott
Obsolete
Unknown
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) | 1.728301 |
|---|---|
| Abbe Number (Vd) | 28.68667 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.56974\,\lambda^2}{\lambda^2 - 0.0120852} + \frac{0.306366\,\lambda^2}{\lambda^2 - 0.0541694} + \frac{1.03021\,\lambda^2}{\lambda^2 - 117.354}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 8.2 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.0 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[3.68 \times 10^{-6} + 2(1.71 \times 10^{-8})\,\Delta T + 3(-3.42 \times 10^{-11})\,\Delta T^2 + \frac{1.4 \times 10^{-6} + 2(9.61 \times 10^{-10})\,\Delta T}{\lambda - 0.261}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.45 |
|---|---|
| Relative Cost | 3.03 |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | 1 |
| Acid Resistance | 2 |
| Alkali Resistance | 2 |
| Phosphate Resistance | 3 |
Notes
old
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| FDS2 | Hoya | 1.7283 | 28.674457 | |
| PBH10 | Ohara | 1.728249 | 28.4623 | |
| S-TIH10 | Ohara | 1.72825 | 28.460599 | |
| D28-28 | Corning | 1.728304 | 28.397796 | |
| ZF4 | CDGM | 1.728251 | 28.3239 | |
| E-FD10 | Hoya | 1.72825 | 28.32 | |
| E-FD10L | Hoya | 1.72825 | 28.32 | |
| FD10 | Hoya | 1.728252 | 28.319563 | |
| H-ZF4AGT | CDGM | 1.72825 | 28.318797 | |
| H-ZF4A | CDGM | 1.72825 | 28.318797 |