LAH75 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) | 1.873996 |
|---|---|
| Abbe Number (Vd) | 35.258591 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{3.39721 - 0.0158255\,\lambda^2 + 0.0368189\,\lambda^{-2} + 0.00175964\,\lambda^{-4} - 8.40417 \times 10^{-5}\,\lambda^{-6} + 1.05228 \times 10^{-5}\,\lambda^{-8}}$$
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 | |
|---|---|---|---|---|
| K-VC91(M) | Sumita | 1.88175 | 34.9 | |
| K-VC91 | Sumita | 1.8866 | 35.0 | |
| MC-TAFD317 | Hoya | 1.8812 | 37.17 | |
| MC-TAFD307 | Hoya | 1.88202 | 37.22 | |
| MP-TAFD307 | Hoya | 1.88202 | 37.22 | |
| M-TAFD307 | Hoya | 1.88202 | 37.22 | |
| D-ZLAF67-25 | CDGM | 1.88259 | 37.185491 | |
| D-ZLAF67 | CDGM | 1.88385 | 37.198899 | |
| TAFD13 | Hoya | 1.855396 | 36.557002 | |
| H-ZLAF3 | CDGM | 1.855449 | 36.59805 |
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| S-LAH75 | Ohara | 1.873996 | 35.258594 | |
| L-LAH94 | Ohara | 1.860999 | 37.097767 | |
| S-LAH92 | Ohara | 1.891899 | 37.134024 | |
| S-LAH93 | Ohara | 1.90525 | 35.036826 | |
| LAH71 | Ohara | 1.850259 | 32.28594 | |
| S-LAH71 | Ohara | 1.850259 | 32.27012 | |
| LAH78 | Ohara | 1.901355 | 31.550244 | |
| LAH80 | Ohara | 1.885 | 30.163795 | |
| L-LAH83 | Ohara | 1.864 | 40.577742 | |
| S-LAH95 | Ohara | 1.903659 | 31.343065 |