LASFN10 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) | 1.8155 |
|---|---|
| Abbe Number (Vd) | 44.4 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.27 — 2.0 µm |
$$n(\lambda) = \sqrt{3.2087 - 0.0134729\,\lambda^2 + 0.0309867\,\lambda^{-2} + 5.68933 \times 10^{-5}\,\lambda^{-4} + 7.86687 \times 10^{-5}\,\lambda^{-6} - 2.3121 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 7.2 |
| 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) | 4.8 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 2 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| LAH54 | Ohara | 1.815543 | 44.361146 | |
| S-LAH54 | Ohara | 1.815543 | 44.361146 | |
| TAFD10 | Hoya | 1.815502 | 44.5379 | |
| M-TAFD51 | Hoya | 1.8208 | 42.71 | |
| MP-TAFD51-50 | Hoya | 1.8213 | 42.72 | |
| MC-TAFD51-50 | Hoya | 1.8213 | 42.72 | |
| NBFD14 | Hoya | 1.801699 | 44.321602 | |
| H-ZLAF1 | CDGM | 1.80166 | 44.263459 | |
| D-ZLAF61-25 | CDGM | 1.82131 | 42.674895 | |
| D-ZLAF61 | CDGM | 1.82241 | 42.714541 |