KCL 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
Transmission Calculator
Optical Properties
| Refractive Index (nd) | 1.490213 |
|---|---|
| Abbe Number (Vd) | 43.33857 |
| Dispersion Formula | Herzberger |
| Wavelength Range | 0.2 — 30.0 µm |
$$L = \frac{1}{\lambda^2 - 0.028}
n(\lambda) = 1.4746 + 0.0050546\,L - 2.57481 \times 10^{-5}\,L^2 - 0.000178283\,\lambda^2 - 4.49595 \times 10^{-8}\,\lambda^4 - 2.07573 \times 10^{-11}\,\lambda^6$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 1.98 |
|---|---|
| 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: ISP Optics data sheet (www.ispoptics.com)
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| FTM8 | Ohara | 1.532565 | 45.914102 | |
| FF2 | Hoya | 1.532561 | 45.942878 | |
| LLF8 | Sumita | 1.53256 | 46.0 | |
| QF6 | CDGM | 1.531719 | 48.755584 | |
| LLF6 | Schott | 1.531719 | 48.762595 | |
| LLF2 | Schott | 1.540719 | 47.171344 | |
| QF8 | CDGM | 1.540718 | 47.198243 | |
| FEL2 | Hoya | 1.540718 | 47.198247 | |
| E-FEL2 | Hoya | 1.54072 | 47.2 | |
| LLF2 | Sumita | 1.54072 | 47.2 |
Similar Glasses (Generic IR)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| IRG7 | Generic IR | 1.564424 | 43.736647 | |
| IRG15 | Generic IR | 1.534275 | 55.700357 | |
| KBR | Generic IR | 1.559967 | 31.977241 | |
| GEO2 | Generic IR | 1.608459 | 41.728763 | |
| IRGN6 | Generic IR | 1.589096 | 56.33564 | |
| CALCITE | Generic IR | 1.658643 | 48.541403 | |
| F_SILICA | Generic IR | 1.458464 | 67.821433 | |
| IRG11 | Generic IR | 1.680932 | 44.434326 | |
| CSBR | Generic IR | 1.69706 | 34.108015 | |
| MGO | Generic IR | 1.737505 | 53.505455 |