Machine Vision Lens – C252316M8IR

C252316M8IR is C-Mount 25mm FA Machine Vision Lens, Manual Iris, Low-Distortion (<-1.5%), IR-Corrected, 8-Megapixel High-Resolution, F1.6 Large Aperture.

25mm C-Mount 8MP IR Corrected Machine Vision Lens

This 25mm C-Mount machine vision lens is designed for 2/3″ sensors and up to 8MP industrial imaging, delivering a 25° diagonal FOV with low distortion below -1.5%. Its IR-corrected optical design, F1.6 aperture, and manual focus and iris make it suitable for precision FA lens systems, factory inspection, and industrial imaging applications requiring stable visible and near-infrared performance.

For engineers matching a lens with a specific image sensor, the Sensor Guide provides useful information about sensor formats, while the Lens Selection Guide can help with focal length, image coverage, and application requirements.

Product Core Highlights

• 25mm fixed focal length for controlled industrial imaging.
• 8MP resolution support for detailed inspection images.
• F1.6 aperture for efficient light collection.
• IR-corrected optics for more consistent imaging across visible and near-infrared wavelengths.
• Low distortion below -1.5% for accurate industrial image reproduction.

As part of the C-Mount Lenses range, this lens provides a practical optical solution for machine vision systems that require a compact 25mm focal length, high-resolution imaging, and controlled distortion.

C-Mount IR Corrected Machine Vision Lens Applications

Core Application Scenes

This 25mm IR corrected industrial lens is designed for machine vision systems where image detail, moderate field coverage, and optical consistency are important. With an 18° horizontal FOV on a 2/3″ sensor, it provides a controlled viewing area that is suitable for inspecting individual components, assemblies, and defined sections of a production line.

In factory automation and FA systems, the 8MP resolution allows the camera to capture fine surface details, component features, printed markings, and dimensional characteristics. The 0.15m minimum object distance also provides flexibility for relatively close-range inspection equipment where the camera needs to be positioned near the target.

The IR-corrected optical design makes this lens particularly useful when an imaging system operates with both visible light and near-infrared illumination. This can benefit inspection systems that switch between different lighting wavelengths or use NIR illumination to enhance contrast between specific materials, markings, or surfaces.

Its low distortion specification of below -1.5% helps maintain a more geometrically controlled image, which is valuable for machine vision tasks involving object positioning, edge analysis, dimensional assessment, and visual inspection. Engineers can also use the FOV Calculator to estimate the expected viewing area based on sensor dimensions and working distance.

Designed for high-resolution factory automation, close-range inspection, and visible/NIR machine vision applications.

Compatible Device List

• 2/3″ Industrial Cameras: Designed for compatible C-Mount cameras using 2/3″ image sensors and supporting resolutions up to 8MP.
• Machine Vision Cameras: Suitable for automated inspection cameras used for component checking, surface inspection, positioning, and visual verification.
• FA Inspection Equipment: A practical choice for fixed-position factory automation systems requiring repeatable optical framing.
• NIR Imaging Systems: The IR-corrected optical design supports applications that combine visible and near-infrared illumination.
• Close-Range Inspection Systems: The 0.15m M.O.D. provides flexibility for compact inspection stations where the lens operates relatively close to the target.
• Measurement & Analysis Equipment: Low distortion and high-resolution imaging can support edge detection, dimensional analysis, and other vision-based inspection tasks.
• Custom Vision Systems: Manual focus and iris adjustment allow system integrators to optimize the lens according to working distance, illumination, and depth-of-field requirements.

For applications requiring a different optical format, custom mechanical dimensions, special coatings, or application-specific optical development, engineers can contact Towin Lens for customization discussions.

Frequently Asked Questions

Q: What sensor size is this 25mm C-Mount lens designed for?
A: The specified FOV is based on a 2/3″ image format, making the lens suitable for compatible 2/3″ industrial camera sensors.

Q: What is the resolution of this machine vision lens?
A: The lens supports 8MP resolution, making it suitable for high-detail industrial inspection and machine vision applications.

Q: What is the field of view of the 25mm lens?
A: On a 2/3″ sensor, the lens provides a 25° diagonal, 18° horizontal, and 15° vertical FOV.

Q: What does IR corrected mean for this lens?
A: IR correction means the optical system is designed to maintain more consistent focus and imaging performance across visible and near-infrared wavelengths, which is useful for systems using NIR illumination.

Q: Is this a fixed focal length lens?
A: Yes. The lens uses a 25mm fixed focal length, providing consistent optical framing for fixed-position industrial imaging systems.

Q: Can this lens be used for close-range machine vision inspection?
A: Yes. Its 0.15m minimum object distance provides flexibility for close-range inspection systems, although the final working distance should be selected according to the required field of view and object size.

Q: Does the lens have adjustable focus and iris?
A: Yes. Both focus and iris are manually adjustable, allowing installers to optimize image sharpness and light transmission according to the application.

Q: Is this lens suitable for precision industrial inspection?
A: Yes. The combination of 8MP resolution, low distortion below -1.5%, 25mm focal length, and IR-corrected optics makes it suitable for a range of precision machine vision and factory automation applications.

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