Bandpass filters share similar characteristics with narrowband filters; in many industries, narrowband and bandpass filters are even regarded as belonging to the same category—differing only in bandwidth (bandpass filters typically feature slightly broader bandwidths and higher transmission throughput). Fushe’s bandpass filters cover the ultraviolet (UV), visible, and near-infrared (NIR) spectral ranges.
Bandpass filters are widely applied in LiDAR systems, optical instrumentation, machine vision, laser ranging, surveillance & security, infrared imaging, automated visual inspection, biometric identification, aesthetic devices, and biomedical equipment.
Advantages: Ion-assisted deposition using RF ion sources ensures robust, durable thin-film coatings with extended service life; high transmittance; excellent blocking performance (deep out-of-band attenuation) for effective suppression of stray and interfering light.
| Center Wavelength | 245-1064nm |
| Full Width at Half Maximum (FWHM) | 5nm；10nm; 20nm; 30nm, 50nm or custom |
| Blocking Range | 200-1200nm |
| Optical Density (OD) | OD3; OD4; OD5; OD6 |
| Dimensional Tolerance | 0.5-600±0.02mm |
| Clear Aperture | ≥90% |
| Thickness Tolerance | 0.3-50±0.02mm |
| Surface Flatness | 1/10λ |
| Surface Quality | 10-5 |
| Edge Bevel | 45°×0.2mm |
| Coating | Customizable |
