LAH66 by Ohara
Obsolete
Unknown
Environmentally Friendly
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) | 1.772499 |
|---|---|
| Abbe Number (Vd) | 49.60134 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{3.07311 - 0.0150432\,\lambda^2 + 0.0239335\,\lambda^{-2} + 0.000556967\,\lambda^{-4} - 1.00823 \times 10^{-5}\,\lambda^{-6} + 1.18733 \times 10^{-6}\,\lambda^{-8}}$$
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 | |
|---|---|---|---|---|
| LASFN7 | Sumita | 1.7725 | 49.6 | |
| K-LaSFn7 | Sumita | 1.7725 | 49.6 | |
| H-LAF50B | CDGM | 1.7725 | 49.598996 | |
| N-LAF34 | Schott | 1.7725 | 49.62 | |
| TAF1 | Hoya | 1.7725 | 49.63 | |
| LAFN28 | Schott | 1.773142 | 49.568242 | |
| D-LAF50-25 | CDGM | 1.77288 | 49.519338 | |
| MP-TAF105 | Hoya | 1.7725 | 49.5 | |
| MC-TAF105 | Hoya | 1.7725 | 49.5 | |
| M-TAF105 | Hoya | 1.7725 | 49.5 |
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| S-LAH66 | Ohara | 1.772499 | 49.598371 | |
| L-LAH91 | Ohara | 1.7645 | 49.096913 | |
| S-LAH96 | Ohara | 1.76385 | 48.488692 | |
| YGH52 | Ohara | 1.7865 | 50.001717 | |
| S-YGH52 | Ohara | 1.7865 | 50.001717 | |
| L-LAH87 | Ohara | 1.7703 | 47.401904 | |
| S-LAM54 | Ohara | 1.756998 | 47.82317 | |
| LAM54 | Ohara | 1.756998 | 47.815604 | |
| LAH64 | Ohara | 1.788001 | 47.385275 | |
| S-LAH64 | Ohara | 1.788001 | 47.368522 |