IRG7 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) | 1.564424 |
|---|---|
| Abbe Number (Vd) | 43.736647 |
| Dispersion Formula | Herzberger |
| Wavelength Range | 0.365 — 3.303 µm |
$$L = \frac{1}{\lambda^2 - 0.028}
n(\lambda) = 1.54828 + 0.00547928\,L - 1.89907 \times 10^{-5}\,L^2 - 0.00272089\,\lambda^2 - 1.22679 \times 10^{-5}\,\lambda^4 - 9.56555 \times 10^{-7}\,\lambda^6$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 9.6 |
|---|---|
| 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) | 3.06 |
|---|---|
| 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 | |
|---|---|---|---|---|
| LF8 | Schott | 1.564435 | 43.75028 | |
| PBL26Y | Ohara | 1.567322 | 42.855569 | |
| LF6HT | Schott | 1.56732 | 42.847665 | |
| FL6 | Hoya | 1.567324 | 42.843119 | |
| E-FL6 | Hoya | 1.56732 | 42.84 | |
| PBL26 | Ohara | 1.567322 | 42.831708 | |
| S-TIL26 | Ohara | 1.567322 | 42.817076 | |
| H-QF56 | CDGM | 1.56732 | 42.810117 | |
| LF6 | Sumita | 1.56732 | 42.8 | |
| FEL4 | Hoya | 1.561379 | 45.226718 |
Similar Glasses (Generic IR)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| GEO2 | Generic IR | 1.608459 | 41.728763 | |
| KCL | Generic IR | 1.490213 | 43.33857 | |
| KBR | Generic IR | 1.559967 | 31.977241 | |
| IRG15 | Generic IR | 1.534275 | 55.700357 | |
| IRGN6 | Generic IR | 1.589096 | 56.33564 | |
| CALCITE | Generic IR | 1.658643 | 48.541403 | |
| IRG11 | Generic IR | 1.680932 | 44.434326 | |
| CSBR | Generic IR | 1.69706 | 34.108015 | |
| MGO | Generic IR | 1.737505 | 53.505455 | |
| SPINEL | Generic IR | 1.716226 | 60.607355 |