N-SF10 by Schott
Preferred
Unknown
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) | 1.72828 |
|---|---|
| Abbe Number (Vd) | 28.53 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.38 — 2.5 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.62154\,\lambda^2}{\lambda^2 - 0.0122241} + \frac{0.256288\,\lambda^2}{\lambda^2 - 0.0595737} + \frac{1.64448\,\lambda^2}{\lambda^2 - 147.469}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 9.4 |
|---|---|
| TCE 100/300°C (10-6/K) | 10.8 |
| Thermal Conductivity (W/mK) | 0.96 |
| Heat Capacity (J/gK) | 0.74 |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-4.68 \times 10^{-6} + 2(7.41 \times 10^{-9})\,\Delta T + 3(-1.89 \times 10^{-11})\,\Delta T^2 + \frac{9.49 \times 10^{-7} + 2(1.42 \times 10^{-9})\,\Delta T}{\lambda - 0.279}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.05 |
|---|---|
| Relative Cost | 1.6 |
Mechanical Properties
| Young's Modulus (GPa) | 87.0 |
|---|---|
| Poisson's Ratio | 0.25 |
| Knoop Hardness (kgf/mm²) | 540.0 |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | 0 |
| Acid Resistance | 1 |
| Alkali Resistance | 1 |
| Phosphate Resistance | 1 |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| PBH10 | Ohara | 1.728249 | 28.4623 | |
| S-TIH10 | Ohara | 1.72825 | 28.460599 | |
| D28-28 | Corning | 1.728304 | 28.397796 | |
| FDS2 | Hoya | 1.7283 | 28.674457 | |
| 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-ZF4A | CDGM | 1.72825 | 28.318797 | |
| H-ZF4AGT | CDGM | 1.72825 | 28.318797 |