D-LAF53-25 by CDGM
Preferred
Medium
Precision Molding
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) | 1.7421 |
|---|---|
| Abbe Number (Vd) | 49.246024 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.302 — 2.325 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.32239\,\lambda^2}{\lambda^2 - 0.00606224} + \frac{0.646347\,\lambda^2}{\lambda^2 - 0.0234824} + \frac{1.17508\,\lambda^2}{\lambda^2 - 87.8164}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 5.6 |
|---|---|
| TCE 100/300°C (10-6/K) | 7.2 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[7.67 \times 10^{-6} + 2(2.36 \times 10^{-8})\,\Delta T + 3(-1.95 \times 10^{-10})\,\Delta T^2 + \frac{6.35 \times 10^{-7} + 2(3.67 \times 10^{-10})\,\Delta T}{\lambda - 0.208}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.26 |
|---|---|
| Relative Cost | 12.6 |
Mechanical Properties
| Young's Modulus (GPa) | 119.78 |
|---|---|
| Poisson's Ratio | 0.298 |
| Knoop Hardness (kgf/mm²) | 673.0 |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
anneal rate:25℃/h
Similar Glasses (Other Manufacturers)
Similar Glasses (CDGM)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| H-LAF53 | CDGM | 1.7433 | 49.221808 | |
| D-LAF53 | CDGM | 1.7433 | 49.325949 | |
| H-LAK3 | CDGM | 1.74693 | 50.950085 | |
| H-LAK54 | CDGM | 1.734 | 51.485829 | |
| H-LAF6LA | CDGM | 1.757 | 47.711817 | |
| H-LAK8B | CDGM | 1.72 | 50.280736 | |
| H-LAK8A | CDGM | 1.72 | 50.343857 | |
| D-LAF050-25 | CDGM | 1.76709 | 49.197491 | |
| H-LAK61 | CDGM | 1.740999 | 52.676196 | |
| H-LAK53A | CDGM | 1.755 | 52.320574 |