FA Lens – C1211820M5

C1211820M5 is 12mm 5-Megapixel C-Mount FA lens, 1/1.8″ low distortion lens, manual iris, suitable for surveillance or industrial applications.

For applications where image coverage needs to be calculated before lens selection, the FOV Calculator can help engineers estimate field of view based on focal length, sensor size, and working distance.

1/1.8″ 5MP 12mm C-Mount Low Distortion FA Lens

This 1/1.8-inch 5MP C-Mount low distortion FA lens features a 12mm focal length and less than 0.3% distortion, making it suitable for precision imaging applications where geometric accuracy and consistent image reproduction are important. Its 33° horizontal FOV provides a balanced viewing area for close-range industrial inspection and automated measurement.

Designed for 1/1.8-inch sensors, this low distortion industrial lens combines a manual F2.0–C aperture, manual focus, and 0.1m minimum object distance to provide flexible optical adjustment for factory automation, machine vision inspection, and precision imaging equipment.

FA Lens Highlights at a Glance

• <0.3% distortion for accurate geometric image reproduction.
• 5MP resolution supports detailed industrial inspection and machine vision imaging.
• 12mm focal length provides a controlled viewing angle for precision inspection.
• 1/1.8-inch image format is matched to compatible industrial camera sensors.
• F2.0–C manual aperture provides flexible exposure and depth-of-field adjustment.

C-Mount Low Distortion FA Lens Applications

Core Application Scenes

This low distortion machine vision lens is designed for applications where maintaining the shape and relative position of objects in the captured image is important. With distortion below 0.3%, it is particularly suitable for inspection tasks involving edges, dimensions, component positions, and other geometric features.

In factory automation and FA inspection, the 12mm focal length provides a relatively controlled field of view for inspecting components placed at short to medium working distances. The 0.1m M.O.D. allows the lens to be positioned relatively close to the inspection target, which can be useful when camera space is limited.

For precision machine vision, low optical distortion can simplify image analysis because the captured geometry more closely represents the physical target. This can benefit applications such as component inspection, dimensional verification, PCB inspection, label positioning, mechanical part inspection, and automated quality-control systems.

The lens can also be integrated into robotic inspection stations where cameras need to capture repeatable views of components during automated handling. For system designers developing complete Machine Vision Solutions, the combination of 5MP resolution and low distortion provides a practical optical configuration for detailed inspection.

Compatible Device List

• Industrial Cameras: Compatible with C-Mount industrial cameras using 1/1.8-inch sensors and resolutions up to 5MP.
• FA Inspection Equipment: Suitable for automated optical inspection stations, production-line inspection systems, and factory automation equipment.
• Machine Vision Cameras: Well suited to cameras used for component detection, dimensional inspection, positioning, and quality control.
• Robotic Inspection Systems: Can be integrated into robotic vision systems where consistent image geometry is required for object inspection and positioning.
• Measurement & Verification Equipment: The low distortion specification is useful for imaging applications involving edges, dimensions, alignment, and relative object positioning.
• Close-Range Industrial Imaging: The 0.1m M.O.D. provides flexibility for compact inspection systems where the camera is installed relatively close to the target.

Before selecting a lens for a particular camera, engineers should confirm that the sensor format is fully supported and that the required image coverage matches the working distance. The Sensor Guide provides useful information for sensor and lens matching, while the Lens Selection Guide can help with the broader optical selection process.

For applications where distortion performance is a key selection factor, the Distortion Guide provides additional background on lens distortion and its influence on machine vision imaging.

Designed for precision factory automation, dimensional inspection, machine vision, and automated quality-control applications.

Frequently Asked Questions

Q: What makes this lens suitable for precision machine vision?
A: Its combination of 5MP resolution, C-Mount construction, 1/1.8-inch image format, and less than 0.3% distortion makes it suitable for machine vision systems that require detailed and geometrically consistent images.

Q: How low is the distortion of this C-Mount lens?
A: The specified distortion is less than 0.3%. This low distortion performance is particularly useful for applications involving geometric features, positioning, dimensional inspection, and image-based measurement.

Q: What sensor size is this lens designed for?
A: The lens is designed for a 1/1.8-inch image format. The camera sensor should be checked for compatibility before integration.

Q: What is the field of view of the 12mm lens?
A: The specified field of view is 40.7° diagonal, 33° horizontal, and 24.3° vertical. Actual scene coverage depends on the sensor dimensions and working distance.

Q: Can this lens be used for factory automation?
A: Yes. Its low distortion, 5MP resolution, C-Mount interface, and 0.1m M.O.D. make it suitable for various FA inspection and automated quality-control systems.

Q: What is the aperture range of this machine vision lens?
A: The manual aperture ranges from F2.0 to C, allowing the user to adjust light transmission and depth of field according to the imaging environment.

Q: What is the minimum object distance?
A: The specified M.O.D. is 0.1m, or 100mm. The actual usable working distance should be evaluated together with the required field of view and installation conditions.

Q: How can I check whether this 12mm lens provides enough image coverage?
A: Image coverage depends on focal length, sensor size, and working distance. Engineers can use the FOV Calculator to estimate the required field of view before selecting the lens.

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