H-LAF54 by CDGM
Preferred
Common
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) | 1.799519 |
|---|---|
| Abbe Number (Vd) | 42.253294 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.365 — 1.014 µm |
$$n(\lambda) = \sqrt{3.1447 - 0.0101059\,\lambda^2 + 0.0343097\,\lambda^{-2} - 0.000833128\,\lambda^{-4} + 0.000217008\,\lambda^{-6} - 8.70148 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 5.7 |
|---|---|
| TCE 100/300°C (10-6/K) | 7.0 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[6.31 \times 10^{-6} + 2(2.13 \times 10^{-8})\,\Delta T + 3(9.75 \times 10^{-11})\,\Delta T^2 + \frac{1.02 \times 10^{-6} + 2(2.29 \times 10^{-10})\,\Delta T}{\lambda - 0.077}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.51 |
|---|---|
| Relative Cost | 6.5 |
Mechanical Properties
| Young's Modulus (GPa) | 110.76 |
|---|---|
| Poisson's Ratio | 0.303 |
| Knoop Hardness (kgf/mm²) | 698.0 |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| LAH52 | Ohara | 1.799516 | 42.241337 | |
| S-LAH52Q | Ohara | 1.79952 | 42.239506 | |
| S-LAH52 | Ohara | 1.799516 | 42.225007 | |
| LASFN3 | Sumita | 1.7995 | 42.3 | |
| K-LaSFn3 | Sumita | 1.7995 | 42.3 | |
| NBFD12 | Hoya | 1.7995 | 42.34 | |
| N-LAF36 | Schott | 1.79952 | 42.37 | |
| K-VC179 | Sumita | 1.7989 | 41.8 | |
| K-VC179(M) | Sumita | 1.79441 | 41.9 | |
| D96-43 | Corning | 1.796195 | 43.217783 |
Similar Glasses (CDGM)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| H-ZLAF52A | CDGM | 1.8061 | 41.016887 | |
| H-ZLAF52 | CDGM | 1.806099 | 40.945389 | |
| D-ZLAF81-25 | CDGM | 1.80757 | 40.97334 | |
| D-ZLAF81 | CDGM | 1.8088 | 40.999441 | |
| D-ZLAF52LA-25 | CDGM | 1.80882 | 40.970313 | |
| D-ZLAF52LA | CDGM | 1.81 | 40.992863 | |
| H-ZLAF1 | CDGM | 1.80166 | 44.263459 | |
| H-LAF52 | CDGM | 1.7859 | 44.187159 | |
| H-ZLAF51 | CDGM | 1.8045 | 39.635248 | |
| D-ZLAF61-25 | CDGM | 1.82131 | 42.674895 |