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Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
No transmission data available.
Optical Properties
| Refractive Index (nd) | 1.737505 |
|---|---|
| Abbe Number (Vd) | 53.505455 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.36 — 5.4 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.11103\,\lambda^2}{\lambda^2 - 0.00507606} + \frac{0.846009\,\lambda^2}{\lambda^2 - 0.0189119} + \frac{7.80853\,\lambda^2}{\lambda^2 - 723.235}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 10.6 |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[2 \times 10^{-5} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.583 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | — |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
source: Handbook of Optics Vol. II
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| K-LaKn14 | Sumita | 1.741 | 52.7 | |
| LAKN14 | Sumita | 1.741 | 52.7 | |
| H-LAK61 | CDGM | 1.740999 | 52.676196 | |
| LAL61 | Ohara | 1.740999 | 52.648747 | |
| S-LAL61 | Ohara | 1.740999 | 52.636502 | |
| TAC2 | Hoya | 1.741 | 52.61 | |
| S-LAL61Q | Ohara | 1.740999 | 52.60195 | |
| D-LAK52 | CDGM | 1.7305 | 53.944268 | |
| D-LAK52-25 | CDGM | 1.72924 | 53.851219 | |
| MP-TAC80-60 | Hoya | 1.72963 | 54.07 |
Similar Glasses (Generic IR)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| SPINEL | Generic IR | 1.716226 | 60.607355 | |
| ALON | Generic IR | 1.788917 | 58.204971 | |
| CALCITE | Generic IR | 1.658643 | 48.541403 | |
| IRG11 | Generic IR | 1.680932 | 44.434326 | |
| SAPPHIRE | Generic IR | 1.768234 | 72.237215 | |
| CSBR | Generic IR | 1.69706 | 34.108015 | |
| IRGN6 | Generic IR | 1.589096 | 56.33564 | |
| GEO2 | Generic IR | 1.608459 | 41.728763 | |
| PBF2 | Generic IR | 1.766591 | 28.390315 | |
| IRG7 | Generic IR | 1.564424 | 43.736647 |