LLF6HT by Schott
Obsolete
Unknown
Environmentally Dangerous
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) | 1.531739 |
|---|---|
| Abbe Number (Vd) | 48.974492 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.20073\,\lambda^2}{\lambda^2 - 0.00848879} + \frac{0.103855\,\lambda^2}{\lambda^2 - 0.0416237} + \frac{0.876958\,\lambda^2}{\lambda^2 - 105.783}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.5 |
|---|---|
| TCE 100/300°C (10-6/K) | 8.5 |
| 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) | 2.81 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | 0 |
| Acid Resistance | 1 |
| Alkali Resistance | 1 |
| Phosphate Resistance | 1 |
Notes
old, High UV Transmission; glass data moved from former "I_LINE" catalog
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| PBL6Y | Ohara | 1.531717 | 48.956017 | |
| PBL6 | Ohara | 1.531717 | 48.904553 | |
| LLF6 | Sumita | 1.53172 | 48.9 | |
| S-TIL6 | Ohara | 1.531717 | 48.840718 | |
| E-FEL6 | Hoya | 1.53172 | 48.84 | |
| H-QF6A | CDGM | 1.53172 | 48.839833 | |
| FEL6 | Hoya | 1.53172 | 48.837531 | |
| QF6 | CDGM | 1.531719 | 48.755584 | |
| PBL2 | Ohara | 1.54072 | 47.23368 | |
| H-QF8 | CDGM | 1.54072 | 47.230007 |
Similar Glasses (Schott)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| N-LLF6 | Schott | 1.531688 | 48.895238 | |
| LLF6 | Schott | 1.531719 | 48.762595 | |
| LLF2 | Schott | 1.540719 | 47.171344 | |
| KZFN2 | Schott | 1.52944 | 51.626811 | |
| KZFN1 | Schott | 1.551149 | 49.637723 | |
| KF9 | Schott | 1.523412 | 51.492996 | |
| N-KF9 | Schott | 1.52346 | 51.54 | |
| KF6 | Schott | 1.517421 | 52.200088 | |
| LLF1HTi | Schott | 1.54815 | 45.9 | |
| LLF1HT | Schott | 1.548144 | 45.888593 |