SF63 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) | 1.7484 |
|---|---|
| Abbe Number (Vd) | 27.713565 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.62174\,\lambda^2}{\lambda^2 - 0.0126014} + \frac{0.315966\,\lambda^2}{\lambda^2 - 0.0557276} + \frac{1.03249\,\lambda^2}{\lambda^2 - 116.478}}$$
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) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[4.65 \times 10^{-6} + 2(1.76 \times 10^{-8})\,\Delta T + 3(1.62 \times 10^{-12})\,\Delta T^2 + \frac{1.37 \times 10^{-6} + 2(1.21 \times 10^{-9})\,\Delta T}{\lambda - 0.276}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.62 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | — |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
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Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| SFN4 | Sumita | 1.7506 | 27.8 | |
| FD41 | Hoya | 1.750839 | 27.686615 | |
| D56-27 | Corning | 1.755203 | 27.591377 | |
| ZF6 | CDGM | 1.755205 | 27.546239 | |
| FD4 | Hoya | 1.755199 | 27.530242 | |
| H-ZF6 | CDGM | 1.7552 | 27.530047 | |
| E-FD4L | Hoya | 1.7552 | 27.53 | |
| E-FD4 | Hoya | 1.7552 | 27.53 | |
| PBH4 | Ohara | 1.755199 | 27.512146 | |
| PBH4W | Ohara | 1.755199 | 27.512146 |