IRG3 by Generic IR
Standard
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) | 1.844836 |
|---|---|
| Abbe Number (Vd) | 32.330322 |
| Dispersion Formula | Herzberger |
| Wavelength Range | 0.4047 — 4.586 µm |
$$L = \frac{1}{\lambda^2 - 0.028}
n(\lambda) = 1.81184 + 0.0106621\,L + 4.8112 \times 10^{-5}\,L^2 - 0.00316137\,\lambda^2 - 1.34328 \times 10^{-5}\,\lambda^4 - 2.6206 \times 10^{-7}\,\lambda^6$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 8.1 |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.47 |
|---|---|
| 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 | — |
Notes
source: Schott Spec Sheet
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| LASFN21 | Sumita | 1.85 | 32.4 | |
| K-LaSFn21 | Sumita | 1.85 | 32.4 | |
| H-ZLAF71 | CDGM | 1.85026 | 32.297288 | |
| LAH71 | Ohara | 1.850259 | 32.28594 | |
| S-LAH71 | Ohara | 1.850259 | 32.27012 | |
| H-ZLAF71AGT | CDGM | 1.85026 | 32.216801 | |
| N-LASF9 | Schott | 1.85025 | 32.17 | |
| N-LASF9HT | Schott | 1.85025 | 32.17 | |
| LASFN9 | Schott | 1.85025 | 32.17 | |
| TAFD9 | Hoya | 1.850299 | 32.181026 |
Similar Glasses (Generic IR)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| IRG2 | Generic IR | 1.891717 | 29.896648 | |
| PBF2 | Generic IR | 1.766591 | 28.390315 | |
| CSBR | Generic IR | 1.69706 | 34.108015 | |
| IRG11 | Generic IR | 1.680932 | 44.434326 | |
| MGO | Generic IR | 1.737505 | 53.505455 | |
| ALON | Generic IR | 1.788917 | 58.204971 | |
| CALCITE | Generic IR | 1.658643 | 48.541403 | |
| SPINEL | Generic IR | 1.716226 | 60.607355 | |
| GEO2 | Generic IR | 1.608459 | 41.728763 | |
| KBR | Generic IR | 1.559967 | 31.977241 |