K-LaSKn1 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) | 1.755 |
|---|---|
| Abbe Number (Vd) | 52.4 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36 — 1.55 µm |
$$n(\lambda) = \sqrt{3.0176 - 0.0151224\,\lambda^2 + 0.0219595\,\lambda^{-2} + 0.000521445\,\lambda^{-4} - 1.86939 \times 10^{-5}\,\lambda^{-6} + 1.63694 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 5.7 |
|---|---|
| TCE 100/300°C (10-6/K) | 7.0 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[9.54 \times 10^{-7} + 2(1.19 \times 10^{-8})\,\Delta T + 3(-2.27 \times 10^{-10})\,\Delta T^2 + \frac{5.55 \times 10^{-7} + 2(9.65 \times 10^{-10})\,\Delta T}{\lambda - 0.153}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.51 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 4 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| YGH51 | Ohara | 1.754998 | 52.326713 | |
| H-LAK53B | CDGM | 1.755 | 52.322058 | |
| S-YGH51 | Ohara | 1.754998 | 52.321434 | |
| H-LAK53A | CDGM | 1.755 | 52.320574 | |
| TAC6L | Hoya | 1.755 | 52.32 | |
| TAC6 | Hoya | 1.755 | 52.32 | |
| S-LAH97 | Ohara | 1.755 | 52.318818 | |
| N-LAK33B | Schott | 1.755 | 52.3 | |
| N-LAK33 | Schott | 1.753977 | 52.430467 | |
| LAK33 | Schott | 1.753977 | 52.430467 |
Similar Glasses (Sumita)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| LASKN1 | Sumita | 1.755 | 52.4 | |
| K-LaKn14 | Sumita | 1.741 | 52.7 | |
| LAKN14 | Sumita | 1.741 | 52.7 | |
| K-LaFK50T(M) | Sumita | 1.76209 | 49.6 | |
| K-LaFK50L | Sumita | 1.7682 | 50.0 | |
| K-LaFK50T | Sumita | 1.766 | 49.8 | |
| LAKN12 | Sumita | 1.7335 | 51.2 | |
| LASKN3 | Sumita | 1.774 | 50.5 | |
| K-LaFK50(M) | Sumita | 1.76831 | 49.7 | |
| K-LaFK50 | Sumita | 1.772 | 50.0 |