Longpass Lens Filter 1000 nm, Select your size, passes all light above 986 nm

The Longpass Lens Filter 1000 nm is designed to transmit wavelengths above 926 nm, providing reliable spectral separation for infrared imaging applications. With a functional transmission range that begins at approximately 926 nm and extends well beyond 1000 nm, this filter effectively blocks shorter wavelengths that can introduce noise or reduce contrast in NIR-based systems. It mounts directly to machine vision lens using standard threaded filter interfaces, allowing quick and secure integration into new or existing optical setups. Multiple thread sizes are available so you can match the filter to your lens.

How the LP1000 Longpass Filter Works

A longpass filter suppresses wavelengths below its cutoff point and allows longer wavelengths to pass efficiently. For the LP1000, wavelengths above 986 nm exhibit high transmission, while light below this threshold is strongly blocked.  Because it passes deep-IR wavelengths while removing visible and shorter NIR light, the LP1000 is well-suited for infrared illumination, laser-based inspection, and systems that require clean NIR-only imaging.

Specification
Filter type	Longpass
Useful wavelength range	986-1100 nm

Where to use Longpass Lens Filter 1000 nm

With a high transmission band beginning above 1000 nm and extending to 1100 nm, the LP1000 supports high-performance NIR imaging.
By eliminating visible-band interference, it enhances clarity, improves measurement accuracy, and maintains stable signal levels when using:

• NIR LEDs

• Laser-based illumination

• Broad-spectrum lamps with unwanted visible components

The LP1000 is well suited for machine vision, inspection, automation, research, and applications requiring precise NIR-only imaging.

Applications for Longpass Lens Filter 1000 nm

• Near-infrared imaging
• Outdoor or uncontrolled lighting environments
• IR-assisted inspection and measurement
• Print, material, or label verification under NIR illumination

Advantages of LP1000

• Passes wavelengths above 1000 nm with high transmission
• Strong rejection of visible-band light
• Improved contrast and detail for NIR cameras
• Reliable performance under mixed or changing lighting
• Enables consistent and repeatable inspection workflows

Compatibility of lenses with Longpass Lens Filter 1000 nm

Most machine vision lenses include a front filter thread, allowing the LP1000 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.

Positioning the filter between the lens and camera ensures proper optical alignment and maintains consistent imaging performance without requiring mechanical changes to the system.

The LP1000 is versatile and integrates easily with a wide range of optical configurations.

Choose your size for Longpass Lens Filter 1000 nm

To support a wide range of lens models, the LP1000 is offered in numerous industry standard thread sizes:

- 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 

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.

Order now Longpass Lens Filter 1000 nm

Select the Longpass Lens Filter 1000 nm in the thread size you need. If you need help choosing the correct cutoff wavelength or mechanical size, our team can assist.