Bandpass Filters
A bandpass filter transmits a certain range of wavelengths (passband) and restricts unwanted wavelengths. These are angle-sensitive filters, so be careful while integrating them into a system. The transmission percentage of a filter can be improved by coating the surface. The bandpass filter is available in a different range of bandwidths (narrow or broad) and in different spectral (UV, VIS, NIR or IR) regions. Applications include fluorescence microscopy, spectroscopy, imaging, and many other fields.
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Products
Specifications
Diagrams
| Product Name | Part Number | Dia (mm) | Center λ (nm) | FWHM (nm) | Blocking λ (nm) | T (%) |
|---|---|---|---|---|---|---|
| UV Laser Line/Narrow BPF | BPF-266-5 | 25.4 | 266 | 5 | 200-1200 | > 90 |
| UV Laser Line/Narrow BPF | BPF-266-10 | 25.4 | 266 | 10 | 200-1200 | > 90 |
| UV Laser Line/Narrow BPF | BPF-355-5 | 25.4 | 355 | 5 | 200-1200 | > 90 |
| UV Laser Line/Narrow BPF | BPF-355-10 | 25.4 | 355 | 10 | 200-1200 | > 90 |
| Visible Laser Line/Narrow BPF | BPF-532-5 | 25.4 | 532 | 5 | 200-1200 | > 90 |
| Visible Laser Line/Narrow BPF | BPF-532-10 | 25.4 | 532 | 10 | 200-1200 | > 90 |
| NIR Laser Line/Narrow BPF | BPF-980-5 | 25.4 | 980 | 5 | 200-1200 | > 90 |
| NIR Laser Line/Narrow BPF | BPF-980-10 | 25.4 | 980 | 10 | 200-1200 | > 90 |
| NIR Laser Line/Narrow BPF | BPF-1064-5 | 25.4 | 1064 | 5 | 200-3000 | > 90 |
| NIR Laser Line/Narrow BPF | BPF-1064-10 | 25.4 | 1064 | 10 | 200-3000 | > 90 |
| IR Laser Line/Narrow BPF | BPF-1550-5 | 25.4 | 1550 | 5 | 200-3000 | > 90 |
| IR Laser Line/Narrow BPF | BPF-1550-10 | 25.4 | 1550 | 10 | 200-3000 | > 90 |
| UV Broadband BPF | BPF-266-25 | 25.4 | 266 | 25 | 200-1200 | > 90 |
| UV Broadband BPF | BPF-266-50 | 25.4 | 266 | 50 | 200-1200 | > 90 |
| UV Broadband BPF | BPF-266-100 | 25.4 | 266 | 100 | 200-1200 | > 90 |
| UV Broadband BPF | BPF-355-25 | 25.4 | 355 | 25 | 200-1200 | > 90 |
| UV Broadband BPF | BPF-355-50 | 25.4 | 355 | 50 | 200-1200 | > 90 |
| UV Broadband BPF | BPF-355-100 | 25.4 | 355 | 100 | 200-1200 | > 90 |
| Visible Broadband BPF | BPF-532-25 | 25.4 | 532 | 25 | 200-1200 | > 90 |
| Visible Broadband BPF | BPF-532-50 | 25.4 | 532 | 50 | 200-1200 | > 90 |
| Visible Broadband BPF | BPF-532-100 | 25.4 | 532 | 100 | 200-1200 | > 90 |
| NIR Broadband BPF | BPF-980-25 | 25.4 | 980 | 25 | 200-3000 | > 90 |
| NIR Broadband BPF | BPF-980-50 | 25.4 | 980 | 50 | 200-3000 | > 90 |
| NIR Broadband BPF | BPF-980-100 | 25.4 | 980 | 100 | 200-3000 | > 90 |
| NIR Broadband BPF | BPF-1064-25 | 25.4 | 1064 | 25 | 200-3000 | > 90 |
| NIR Broadband BPF | BPF-1064-50 | 25.4 | 1064 | 50 | 200-3000 | > 90 |
| NIR Broadband BPF | BPF-1064-100 | 25.4 | 1064 | 100 | 200-3000 | > 90 |
| IR Broadband BPF | BPF-1550-25 | 25.4 | 1550 | 25 | 200-3000 | > 90 |
| IR Broadband BPF | BPF-1550-50 | 25.4 | 1550 | 50 | 200-3000 | > 90 |
| IR Broadband BPF | BPF-1550-100 | 25.4 | 1550 | 100 | 200-3000 | > 90 |
Diameter Tolerance: +0/-0.2mm
Clear Aperture: >90%
Thickness: <10mm
CWL Tolerance: ±2nm
FWHM: 10±2nm
Peak Transmission: >90%
Optical Density: > 4-6 @ 200-3000nm
CWL Shift: <0.02nm/℃
FAQ
A bandpass filter transmits a certain range of wavelengths and restricts unwanted wavelengths. These are angle-sensitive filters, so be careful while integrating them into a system. The transmission percentage of a filter can be improved by correctly coating the surface.