LACL8 by Hoya
Obsolete
Unknown
Environmentally Dangerous
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) | 1.677896 |
|---|---|
| Abbe Number (Vd) | 53.419218 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{2.76176 - 0.0109653\,\lambda^2 + 0.0186904\,\lambda^{-2} + 0.000387299\,\lambda^{-4} - 2.46985 \times 10^{-6}\,\lambda^{-6} + 4.65477 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
| Density (g/cm³) | — |
|---|---|
| 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 | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| LAKN9 | Sumita | 1.678 | 53.3 | |
| BBO | Generic Birefringent | 1.670737 | 52.593907 | |
| D-LAK5-25 | CDGM | 1.67686 | 54.805426 | |
| L-LAL12 | Ohara | 1.6779 | 54.88744 | |
| D-LAK5 | CDGM | 1.6779 | 54.889665 | |
| LAKL12 | Schott | 1.6779 | 54.92 | |
| K-VC80(M) | Sumita | 1.68983 | 52.9 | |
| LAKN12 | Schott | 1.6779 | 55.199566 | |
| N-LAK12 | Schott | 1.6779 | 55.2 | |
| LAL12 | Ohara | 1.6779 | 55.337587 |