P-LAF37 by Schott
Preferred
Unknown
Precision Molding
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) | 1.7555 |
|---|---|
| Abbe Number (Vd) | 45.66 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.32 — 2.5 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.76003\,\lambda^2}{\lambda^2 - 0.00938006} + \frac{0.248287\,\lambda^2}{\lambda^2 - 0.0360537} + \frac{1.15935\,\lambda^2}{\lambda^2 - 86.4325}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 6.26 |
|---|---|
| TCE 100/300°C (10-6/K) | 7.8 |
| Thermal Conductivity (W/mK) | 0.9 |
| Heat Capacity (J/gK) | 0.64 |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[7.03 \times 10^{-6} + 2(1.15 \times 10^{-8})\,\Delta T + 3(7.48 \times 10^{-13})\,\Delta T^2 + \frac{7.25 \times 10^{-7} + 2(8.36 \times 10^{-10})\,\Delta T}{\lambda - 0.206}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.987 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | 115.28 |
|---|---|
| Poisson's Ratio | 0.3 |
| Knoop Hardness (kgf/mm²) | 697.0 |
Chemical Resistance
| Climatic Resistance | — |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
suitable for precision molding
Similar Glasses (Other Manufacturers)
Similar Glasses (Schott)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| N-LAF2 | Schott | 1.74397 | 44.85 | |
| LAF2 | Schott | 1.744002 | 44.719972 | |
| LAFN24 | Schott | 1.757191 | 47.81177 | |
| N-LAF35 | Schott | 1.7433 | 49.4 | |
| LAFN10 | Schott | 1.784432 | 43.950523 | |
| N-LAF33 | Schott | 1.78582 | 44.05 | |
| N-LAF34 | Schott | 1.7725 | 49.62 | |
| LAFN28 | Schott | 1.773142 | 49.568242 | |
| N-LAF21 | Schott | 1.788 | 47.49 | |
| LAFN21 | Schott | 1.788309 | 47.470398 |