LACL60 by Hoya
Special
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) | 1.64 |
|---|---|
| Abbe Number (Vd) | 60.2 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{2.64909 - 0.0141599\,\lambda^2 + 0.0144511\,\lambda^{-2} + 0.000527079\,\lambda^{-4} - 4.34475 \times 10^{-5}\,\lambda^{-6} + 2.4613 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 6.0 |
|---|---|
| TCE 100/300°C (10-6/K) | 7.8 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[3.28907 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.02 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 3 |
|---|---|
| Stain Resistance | 5 |
| Acid Resistance | 4 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
Not in a position to accept new order because of discontinuation.
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| H-LAK4L | CDGM | 1.64 | 60.202769 | |
| C41-60 | Corning | 1.640495 | 60.130957 | |
| BSM81 | Ohara | 1.639999 | 60.091709 | |
| LAK21 | Schott | 1.640495 | 60.101885 | |
| N-LAK21 | Schott | 1.64049 | 60.1 | |
| LAKN2 | Sumita | 1.6405 | 60.1 | |
| K-LaKn2 | Sumita | 1.6405 | 60.1 | |
| S-BSM81 | Ohara | 1.639999 | 60.078127 | |
| LAKL21 | Schott | 1.64048 | 59.749915 | |
| BSM36 | Ohara | 1.642495 | 58.369399 |