Bandpass Lens Filter 800 nm, Select your size, 800 nm peak wavelength, useful range between 750-850nm, useful range FWHM: 100 (±5 nm)

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The Bandpass Lens Filter 800 nm is designed for near-infrared (NIR) imaging, transmitting light at its 800 nm peak wavelength while blocking unwanted wavelengths outside the 750–85 0 nm useful range. It attaches directly to a standard machine vision lens using the built-in front filter thread, providing a secure and reliable mounting interface. With a wide range of available thread sizes, the BP800 integrates seamlessly with many lens formats, ensuring stable optical performance in demanding NIR inspection environments. Overview of the BP800 Narrow Bandpass Filter Narrow bandpass filters transmit only a selected portion of the spectrum while suppressing all other wavelengths. In the case of the BP800, transmission exceeds 90% at the 800 nm peak, and remains above 80% throughout the 750–850 nm useful range. This corresponds to a 100 nm FWHM (±5 nm), giving the filter a broader passband ideal for high-efficiency NIR illumination and detection. Specification Filter type Narrow Bandpass Peak wavelength 800 nm Peak wavelength color NIR (Near-Infrared) Useful wavelength range 750-850 nm Available Thread Sizes for the BP800 Lens Filter Because lenses come in different sizes, the BP800 filter is available in several standard thread options, making it suitable for both compact and larger 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 Using the BP800 with a C-mount (CMT) Filter Interface The BP800 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 800 nm Bandpass Lens Filter The BP800 is well-suited for near-infrared imaging tasks such as: • 800 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 Integrating the BP800 into Machine Vision Systems Most machine vision lenses include a front-mounted filter thread, allowing the BP800 filter to be attached directly. If you are using a C-mount lens on a GigE camera or USB3 camera, the filter can also be placed inside the C-mount connection instead of on the front of the lens. Installed between the camera and the lens, the filter remains fixed within the optical path, ensuring stable alignment and consistent image performance. These versatile mounting options make the BP800 easy to integrate into nearly any machine vision setup. 800 nm Bandpass Filter: Advantages • High transmission at the 800 nm peak wavelength • Strong blocking of out-of-band light • Enhanced image contrast and cleaner signal output • Stable optical behavior across varying lighting conditions • Reliable, repeatable performance for precision near-infrared imaging Find the BP800 Filter Best Suited to Your Optical Setup Select the BP800 narrow bandpass lens filter in the thread size that fits your lens. For assistance choosing the right size or wavelength, contact our technical team. Show more