Infrared Bandpass Filters
IR filters can transmit light of a specific spectrum while cutting off other unwanted light. Such filters are widely used in environmental monitoring, safety detection, and FLIR applications. For example, for gas analysis such as carbon dioxide (CO2), methane (CH4), carbon monoxide (CO), ammonia (NH3), water (H2O), ethanol (CH3CH2OH), sulfur dioxide (SO2), nitrous oxide (N2O), etc.
Parameters
| Material: See details in the list | Surface Quality: 80/50 |
| Dimension Tolerance: + 0/ -0.2 mm | Clear Aperture: 90% |
| Thickness Tolerance: ± 0.2 mm | Blocking Depth: Tmax < 1%; Tavg < 0.1% |
Model
| Dia.(mm) | Thickness(mm) | Material | CWL(um) | T(%) | FWHM(um) | Blocking Range(nm) |
| 10.0 | 1.0 | IR Grade Fused Silica | 2.42±0.03 | ≥ 85 | 0.14±0.02 | 200-3000 |
| 10.0 | 1.0 | 3.33±0.03 | ≥ 80 | 0.14±0.02 | 200-5000 | |
| 10.0 | 1.0 | 3.33±0.05 | ≥ 80 | 0.20±0.02 | 200-12000 | |
| 10.0 | 1.0 | 3.43±0.03 | ≥ 80 | 0.22±0.02 | 200-12000 | |
| 20.0 | 2.0 | 2.35±0.03 | ≥ 80 | 0.04±0.02 | 200-3000 | |
| 25.0 | 1.0 | 3.33±0.03 | ≥ 80 | 0.14±0.02 | 200-12000 | |
| 25.0 | 1.0 | 3.33±0.05 | ≥ 80 | 0.20±0.02 | 200-12000 | |
| 25.0 | 1.0 | 3.33±0.05 | ≥ 90 | 0.35±0.03 | 200-12000 | |
| 10.0 | 1.0 | Optical Sapphire | 3.86±0.03 | ≥ 80 | 0.07±0.02 | 200-12000 |
| 10.0 | 1.0 | 3.85±0.05 | ≥ 80 | 0.16±0.03 | 200-12000 | |
| 10.0 | 1.0 | 4.28±0.05 | ≥ 80 | 0.07±0.02 | 200-12000 | |
| 10.0 | 1.0 | 4.39±0.06 | ≥ 80 | 0.07±0.02 | 200-12000 | |
| 10.0 | 1.0 | 4.26±0.03 | ≥ 80 | 0.17±0.02 | 200-12000 | |
| 10.0 | 1.0 | 4.40±0.05 | ≥ 80 | 0.17±0.02 | 200-12000 | |
| 10.0 | 1.0 | 4.55±0.05 | ≥ 80 | 0.17±0.02 | 200-12000 | |
| 10.0 | 1.0 | 4.68±0.03 | ≥ 80 | 0.07±0.02 | 200-12000 | |
| 10.0 | 1.0 | 4.68±0.05 | ≥ 80 | 0.19±0.02 | 200-12000 | |
| 10.0 | 1.0 | 5.25±0.05 | ≥ 75 | 0.22±0.02 | 200-12000 | |
| 25.0 | 1.0 | 4.26±0.03 | ≥ 85 | 0.17±0.02 | 200-12000 | |
| 25.0 | 1.0 | 4.35±0.05 | ≥ 85 | 0.17±0.02 | 200-12000 | |
| 25.0 | 1.0 | 4.68±0.03 | ≥ 85 | 0.07±0.02 | 200-12000 | |
| 25.0 | 1.0 | 4.72±0.05 | ≥ 80 | 0.19±0.02 | 200-12000 | |
| 25.0 | 1.0 | 5.25±0.05 | ≥ 75 | 0.22±0.02 | 200-12000 | |
| 25.0 | 1.0 | 5.30±0.10 | ≥ 75 | 0.50±0.03 | 200-12000 | |
| 10.0 | 1.0 | 4.00±0.10 | ≥ 80 | 2.00±0.05 | 200-12000 | |
| 25.0 | 1.0 | 4.25±0.10 | ≥ 80 | 1.10±0.05 | 200-12000 | |
| 25.0 | 1.0 | 4.00±0.10 | ≥ 80 | 2.00±0.05 | 200-12000 | |
| 10.0 | 1.0 | Si | 6.25±0.05 | ≥ 75 | 0.25±0.02 | 200-12000 |
| 10.0 | 1.0 | 7.36±0.10 | ≥ 75 | 0.14±0.02 | 200-10000 | |
| 10.0 | 1.0 | 7.36±0.06 | ≥ 75 | 0.32±0.03 | 200-10000 | |
| 10.0 | 1.0 | 7.36±0.10 | ≥ 75 | 0.42±0.03 | 200-10000 | |
| 25.0 | 1.0 | 7.36±0.10 | ≥ 75 | 0.32±0.03 | 200-10000 |