C-Mount Lens – C0811820M5

C0811820M5 is 1/1.8″ 8mm C-Mount low-distortion HD lens, M25.5×0.5 filter thread, manual iris/focus, F2.0, 5-Megapixel High-Resolution.

For applications where image geometry and sensor matching are critical, the Lens Selection Guide provides useful information for evaluating focal length, sensor format, resolution, and other optical parameters.

1/1.8″ 5MP 8mm Low Distortion C-Mount Lens

This 1/1.8-inch 5MP low distortion C-Mount machine vision lens features an 8mm focal length and ultra-low TV distortion of less than 0.1%, delivering highly accurate image geometry for industrial inspection and factory automation. With a 56° diagonal field of view and manual iris and focus adjustment, it provides a practical optical solution for precision machine vision systems.

Product Highlights at a Glance

• <0.1% TV distortion for highly accurate image geometry.
• 5MP resolution supports detailed industrial inspection.
• 1/1.8-inch image format matches a wide range of industrial camera sensors.
• 8mm focal length with 56° diagonal FOV balances scene coverage and image detail.
• M25.5 × 0.5 filter thread supports compatible optical filter integration.

Low Distortion C-Mount Lens Applications

Core Application Scenes

This low distortion machine vision lens is designed for inspection environments where maintaining the geometric accuracy of the captured image is more important than achieving an extremely wide field of view. Its less-than-0.1% TV distortion helps minimize the bending of straight lines and positional errors toward the edges of the image, making it particularly useful for measurement-oriented imaging.

In factory automation, the lens can be integrated into automated inspection stations for component positioning, dimensional checking, surface inspection, and assembly verification. The 8mm focal length provides a moderate field of view that can work well when the camera is positioned at a controlled distance from the inspection target.

For machine vision equipment used in production environments, the 5MP resolution provides sufficient image detail for many industrial inspection tasks while the manual iris and focus allow optical parameters to be adjusted during system installation and commissioning.

The lens can also be used in robotics vision where accurate object positioning and shape recognition are required. Low geometric distortion helps maintain more consistent spatial relationships across the image, which can be valuable for visual alignment and inspection tasks.

For more information about industrial machine vision applications, see Machine Vision Solutions. Engineers developing automated inspection equipment can also explore Optical Design for additional information about optical performance and system integration.

Compatible Device List

• 1/1.8-inch Industrial Cameras: Designed for C-Mount cameras using compatible 1/1.8-inch image sensors.
• Machine Vision Cameras: Suitable for 5MP industrial cameras used in inspection, measurement, positioning, and quality-control systems.
• Factory Automation Equipment: Can be integrated into automated inspection stations, assembly-line vision systems, and optical quality-control equipment.
• Robotic Vision Systems: Suitable for robotic inspection and visual positioning where low geometric distortion can help maintain image consistency.
• Optical Measurement Systems: The <0.1% TV distortion specification makes the lens suitable for applications where image geometry needs to be carefully controlled.
• Filtered Imaging Systems: The M25.5 × 0.5 filter thread provides a mechanical interface for compatible optical filters when additional spectral or imaging control is required.

When choosing a low distortion lens, engineers should evaluate distortion together with sensor format, focal length, working distance, and required field of view. The Sensor Guide can help with sensor compatibility, while the FOV Calculator can be used to estimate scene coverage for a specific camera configuration.

Designed for precision machine vision, factory automation, optical inspection, dimensional checking, and robotic vision applications.

Frequently Asked Questions

Q: What makes this lens a low distortion machine vision lens?
A: This lens features TV distortion below 0.1%. Such ultra-low distortion preserves object geometry and relative positions across the frame, ideal for precision inspection and measurement applications.

Q: What sensor size is this 5MP lens designed for?
A: The lens is designed for a 1/1.8-inch image format and uses a C-Mount interface. It is suitable for compatible 1/1.8-inch industrial cameras with resolutions up to 5MP.

Q: What is the field of view of the 8mm lens?
A: The specified field of view is 56° diagonal, 47° horizontal, and 36° vertical. Actual image coverage depends on the sensor dimensions and working distance.

Q: Is this lens suitable for factory automation?
A: Yes. Its 5MP resolution, C-Mount design and <0.1% TV distortion suit automated inspection, component positioning, dimensional checking and other factory automation applications.

Q: Does the lens support manual aperture adjustment?
A: Yes. This lens adopts a manual iris with an aperture range from F2.0 to C, letting users adjust light transmission based on lighting conditions and imaging needs.

Q: Does this lens support optical filters?
A: Yes. The lens is equipped with an M25.5 × 0.5 filter screw interface, allowing compatible filters to be installed when required by the imaging system.

Q: Is this an ultra-wide-angle lens?
A: No. With a 56° diagonal FOV, this lens qualifies as a moderate-FOV lens instead of an ultra-wide-angle lens. Its key optical strength is ultra-low distortion.

Q: How do I select the correct focal length for my machine vision system?
A: Focal length should be selected based on sensor size, working distance, and the required field of view. The FOV Calculator can help estimate the required optical configuration, while the Lens Selection Guide provides additional selection guidance.

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