Longpass Lens Filter 630 nm, Select your size, passes all light above 616 nm

The Longpass Lens Filter 630 nm is designed to transmit wavelengths above 630 nm, providing a useful spectral range from approximately 566–1100 nm while strongly blocking shorter wavelengths. 

• It mounts directly onto machine vision lenses using standard filter threads. By suppressing unwanted light below the cutoff point, the filter improves image contrast and enhances the visibility of features, even in complex or mixed-light conditions.
• Multiple thread sizes are available to ensure a precise fit for a wide variety of lenses.

How Longpass Lens Filter 630 nm Works

A longpass filter blocks light below a defined cutoff wavelength and allows light above that point to pass. 

For the LP630, wavelengths above 630 nm are transmitted efficiently, while wavelengths below ~616 nm are strongly suppressed.

Because it provides a clean passband from the deep-red region into the near-infrared, the LP630 is well suited for imaging environments that involve red/NIR illumination or multispectral lighting

Specification
Filter type	Longpass
Useful wavelength range	616-1100 nm

LP630 Longpass Filter Overview and Use Cases

The LP630 efficiently transmits light above its 630 nm cutoff, offering a stable passband through 1100 nm. By removing blue, green, and most mid-visible wavelengths, the filter improves contrast and reduces chromatic noise when used with:

• Red LED illumination

• Broad-spectrum lighting where short-wavelength removal is beneficial

This makes the LP630 valuable in machine vision, inspection tasks, laboratory instruments, and imaging systems that depend on controlled spectral separation.

Typical Applications

• Suppressing blue, green, and mid-visible wavelengths
• Enhancing images under red or NIR illumination
• Print, surface, and material inspection
• Imaging in dusty, hazy, or backlit environments where shorter wavelengths scatter heavily

Key Benefits

• High transmission above 630 nm, reaching ~95% in the passband
• Strong blocking below 620 nm for superior contrast
• Improved detail visibility and cleaner signal capture
• Consistent performance under both fixed and variable lighting
• Enables repeatable, accurate measurements in machine-vision systems

Longpass Lens Filter 630 nm Lens & Camera Compatibility

Most machine vision lenses include a front filter thread, allowing the LP630 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 LP630 is versatile and integrates easily with a wide range of optical configurations.

Available Thread Sizes and Mechanical Options

To support a wide range of lens models, the LP630 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 LP630 Longpass Filters

Select the Longpass Lens Filter 630 nm in the thread size you need. If you need help choosing the correct cutoff wavelength or mechanical size, our team can assist.