The Bandpass Lens filter 550 nm is engineered to transmit light at its 550 nm peak wavelength, blocking unwanted wavelengths outside its designated passband. This selective filtering enhances contrast, color separation, and measurement stability in machine vision and optical applications. The filter mounts directly onto machine vision lenses using the standard front filter thread, ensuring secure installation and stable optical performance. Multiple thread size options make the BP550 compatible with a wide range of lenses used in industrial and scientific imaging systems. Narrow Bandpass Filter 550 nm overview Narrow bandpass filters transmit only a selected portion of the spectrum while suppressing all other wavelengths. Specification Filter type Narrow Bandpass Peak wavelength 550 nm Peak wavelength color Green Useful wavelength range Thread Size Options for the BP550 Lens Filter The BP550 filter is available in several common machine vision thread formats, allowing a secure and precise fit for a wide variety of lenses: • C-mount filter • 0.5 thread (pitch): M22.5×0.5, M25.5×0.5, M27×0.5, M30.5×0.5, M34×0.5, M35.5×0.5, M37×0.5, M37.5×0.5, M40.5×0.5 • 0.75 thread (pitch): M37×0.75, M43×0.75, M46×0.75, M49×0.75, M52×0.75, M55×0.75, M58×0.75, M60×0.75, M62×0.75, M67×0.75, M72×0.75 Want to use the Bandpass Lens Filter 550 nm with a C-mount (CMT) Filter? The BP550 can also be installed inside the C-mount interface—ideal for lenses without a front filter thread or for compact setups where front-mounting is not practical. If you plan to install the filter inside the C-mount interface, simply fill out the form below to get instant access to the mounting guide and lens compatibility information. hbspt.forms.create({ portalId: "7372172", formId: "9b7a9007-56f1-47fe-8842-3e0b38317a2e", region: "eu1" }); Applications for a 550 nm Bandpass Lens Filter The BP550 is well-suited for near-infrared imaging tasks such as: • 550 nm LED or laser illumination systems• NIR fluorescence or dye-based imaging• Inspection of dark, reflective, or low-contrast surfaces• Material identification and sorting• Detecting NIR-responsive markings or surface variations• General NIR imaging in machine vision and scientific research Optimized for the green portion of the visible spectrum, the BP550 enhances image contrast and eliminates spectral noise that interferes with accurate inspection and analysis. On monochrome cameras, the filter passes only the desired 550 nm region, blocking neighboring wavelengths that can lower contrast or create false color artifacts. This improves the detection of: • Subtle color differences and surface features • Marks or defects highlighted under green illumination • Variations in material reflectance within the green spectral bandPaired with white-light or broadband illumination, the BP550 provides: • Improved green-channel contrast • Sharper delineation of fine surface details • Reduced influence of ambient and mixed lighting • Consistent imaging results in variable conditions These capabilities make the BP550 well suited for machine vision inspection, color analysis, fluorescence excitation, and precision optical measurement. Integrating the BP550 into Machine Vision Systems Most lenses include a front filter thread for direct installation. For C-mount lens on GigE camera or USB3 camera, the filter can also be positioned inside the C-mount connection—a useful option when the lens lacks a front thread. Mounted between the camera and lens, the BP550 maintains stable positioning within the optical path, ensuring consistent alignment and reliable imaging performance. These flexible mounting options allow the BP550 to integrate easily into both new and existing machine-vision configurations. Key Advantages of the BP550 Narrow Bandpass Filter • High transmission at the 550 nm center wavelength • Effective blocking of out-of-band wavelengths • Higher contrast and cleaner signal output • Stable optical behavior across varying lighting conditions • Reliable, repeatable performance in precision imaging tasks Select the BP550 Filter That Fits Your Lens Select the Bandpass Lens filter 550 nm in the thread size that fits your lens. For assistance choosing the right size or wavelength, contact our technical team.
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