The Longpass Lens Filter 505 nm is a lens filter engineered to transmit wavelengths above 505 nm, offering a functional spectral range from roughly 491 to 1100 nm, while blocking shorter wavelengths. By blocking shorter wavelengths—including UV, blue, and most cyan—the filter boosts contrast, stabilizes brightness, and improves feature visibility in machine-vision and industrial imaging systems. The filter mounts directly onto lenses using industry standard threaded interfaces and is available in a wide range of sizes to support both compact and large-format optics. Longpass Lens Filter 505 nm: Specifications A longpass filter blocks light below a defined cutoff wavelength and allows light above that point to pass. For the LP505 filter, wavelengths above 505 nm pass with high transmission, while light below 491 nm is strongly blocked. This broad transmission band—covering visible light and extending into the near-infrared—makes the LP505 suitable for imaging setups that use white-light illumination, multi-spectral lighting, or scenes with significant short-wavelength interference. Specification Filter type Longpass Useful wavelength range 491-1100 nm 505 nm Longpass Filter Applications The LP505 filter transmits light above its 505 nm cutoff wavelength, helping stabilize image brightness and reduce contamination from UV and blue light By removing ultraviolet and shorter visible wavelengths, it enhances image contrast and signal stability when used with light sources such as white LEDs, blue suppression lighting or broad-spectrum lamps. The filter is well suited for machine vision, industrial inspection, laboratory setups, and other imaging systems that require controlled spectral separation. Common uses: · UV and blue light suppression · Imaging under white or visible-light illumination · Print, surface, and material inspection Advantages of LP505: · Passes wavelengths above 505 nm with high efficiency · Strong blocking below the cutoff wavelength · Better contrast and detail in camera images · Stable performance in both uniform and variable lighting · Supports accurate and repeatable imaging tasks Longpass Lens Filter 505 nm Lens & Camera Compatibility Most machine vision lenses include a front filter thread, allowing the LP505 to be mounted directly in front of the optics. For systems using a C-mount lens on a USB3 camera or GigE camera, the filter can also be fitted within the C-mount interface. This option is especially helpful when the lens has no front filter thread. Placing the filter between the lens and camera keeps it securely aligned with the optical path and maintains consistent imaging performance without requiring hardware modifications. The LP505 filter offers versatility for various optical setups and can be integrated easily without modifying the existing camera or lens assembly Available Thread Sizes and Mechanical Options To support a wide range of lens models, the LP505 is offered in numerous industry-standard thread sizes: The LP505 Longpass Filter is offered in multiple standard mechanical formats to ensure compatibility with a wide range of lenses. 0.5 mm Pitch Threads 0.75 mm Pitch Threads C-mount Threads M22.5×0.5 M37×0.75 C-mount filter (no lens thread) M25.5×0.5 M43×0.75 — M27×0.5 M46×0.75 — M30.5×0.5 M49×0.75 — M34×0.5 M52×0.75 — M35.5×0.5 M55×0.75 — M37×0.5 M58×0.75 — M37.5×0.5 M60×0.75 — M40.5×0.5 M62×0.75 — — M67×0.75 — — M72×0.75 — If you plan to use a C-mount (CMT) filter thread, complete the form below to receive instant access to the installation guide and lens compatibility information. hbspt.forms.create({ portalId: "7372172", formId: "9b7a9007-56f1-47fe-8842-3e0b38317a2e", region: "eu1" }); Industry Applications for LP505 Filters · UV and blue-wavelength suppression· General machine vision imaging· Surface, texture, and material analysis· Print quality verification· Laboratory imaging setups· Industrial inspection requiring spectral control Order LP505 Longpass Filters Select the Longpass Lens Filter 505 nm in the thread size you need. Contact us if you need help choosing the correct cutoff wavelength or size.
Related
Related