K-LaSFn14 by Sumita
Standard
Rare
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) | 1.834 |
|---|---|
| Abbe Number (Vd) | 37.3 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.4 — 1.55 µm |
$$n(\lambda) = \sqrt{3.26432 - 0.0162651\,\lambda^2 + 0.0320284\,\lambda^{-2} + 0.00152719\,\lambda^{-4} - 4.77755 \times 10^{-5}\,\lambda^{-6} + 5.73459 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 5.8 |
|---|---|
| TCE 100/300°C (10-6/K) | 7.5 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[2.04 \times 10^{-6} + 2(1.48 \times 10^{-8})\,\Delta T + 3(-2.22 \times 10^{-10})\,\Delta T^2 + \frac{7.19 \times 10^{-7} + 2(7.99 \times 10^{-10})\,\Delta T}{\lambda - 0.248}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.18 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 3 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| N-LASF40 | Schott | 1.83404 | 37.3 | |
| NBFD10 | Hoya | 1.834 | 37.34 | |
| M-NBFD10 | Hoya | 1.83441 | 37.29 | |
| MP-NBFD10-20 | Hoya | 1.83461 | 37.29 | |
| H-ZLAF53B | CDGM | 1.834 | 37.210555 | |
| H-ZLAF53BGT | CDGM | 1.834 | 37.210555 | |
| S-LAH60V | Ohara | 1.833999 | 37.206855 | |
| S-LAH60MQ | Ohara | 1.833999 | 37.172099 | |
| LAH60 | Ohara | 1.834 | 37.166863 | |
| S-LAH60 | Ohara | 1.834 | 37.160487 |