H-LAK8B by CDGM
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) | 1.72 |
|---|---|
| Abbe Number (Vd) | 50.280736 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.302 — 2.325 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.55351\,\lambda^2}{\lambda^2 - 0.00793041} + \frac{0.342244\,\lambda^2}{\lambda^2 - 0.0280175} + \frac{1.07012\,\lambda^2}{\lambda^2 - 90.2591}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.6 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.1 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-2.05 \times 10^{-7} + 2(1.37 \times 10^{-8})\,\Delta T + 3(-3.29 \times 10^{-11})\,\Delta T^2 + \frac{4.91 \times 10^{-7} + 2(6.32 \times 10^{-10})\,\Delta T}{\lambda - 0.249}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.88 |
|---|---|
| Relative Cost | 6.0 |
Mechanical Properties
| Young's Modulus (GPa) | 104.61 |
|---|---|
| Poisson's Ratio | 0.293 |
| Knoop Hardness (kgf/mm²) | 582.0 |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
Similar Glasses (CDGM)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| H-LAK8A | CDGM | 1.72 | 50.343857 | |
| H-LAK72 | CDGM | 1.713 | 51.80665 | |
| H-LAK54 | CDGM | 1.734 | 51.485829 | |
| H-LAF2 | CDGM | 1.717 | 47.888609 | |
| H-LAK71 | CDGM | 1.703 | 52.406734 | |
| D-LAF53-25 | CDGM | 1.7421 | 49.246024 | |
| D-LAF53 | CDGM | 1.7433 | 49.325949 | |
| H-LAF53 | CDGM | 1.7433 | 49.221808 | |
| H-LAF51 | CDGM | 1.7 | 48.079839 | |
| H-LAK7A | CDGM | 1.713 | 53.832974 |