

1.1-inch/1-inch 20mm 12MP C-Mount industrial lens with F1.4–22 aperture, dual sensor FOV support, manual adjustment, and 0.5m MOD.
C2011016M12 is 20mm High resolution C-Mount lens, manual iris, 12-Megapixel Industrial Lens, F1.4~22, Low distortion lens for Industrial Inspections.
| IMAGE FORMAT | 1.1″, 1″ |
| FOCAL LENGTH | 20mm |
| F.O.V.(1.1″) | 49°(D) |
| 42.5°(H) | |
| 28°(V) | |
| F.O.V. (1″) | 44.5°(D) |
| 39.5°(H) | |
| 21°(V) | |
| RESOLUTION | 12 MP |
| APERTURE | F1.4~22 |
| DISTORTION | <-4.9% |
| MOUNT | C-Mount |
| IRIS | Manual |
| FOCUS | Manual |
| ZOOM | Manual |
| M.O.D. | 0.5m |
This 1.1-inch / 1-inch 20mm 12MP C-Mount industrial lens is designed for high-resolution machine vision and factory automation systems that require large-format sensor compatibility, a fast F1.4 aperture, and flexible manual optical adjustment. Supporting both 1.1-inch and 1-inch image formats, it provides different fields of view for each sensor size while maintaining controlled imaging performance for demanding industrial applications.
The 12MP resolution and 20mm focal length make this lens suitable for industrial inspection tasks where image detail and sensor utilization are important. Its support for both 1.1-inch and 1-inch sensors gives machine vision designers greater flexibility when selecting or upgrading industrial cameras.
For camera and lens matching, TOWIN’s C-Mount Lenses provide additional options for different sensor formats and inspection requirements.
This lens can be integrated into automated production lines for component inspection, dimensional checking, positioning, presence detection, and surface inspection. The F1.4 maximum aperture can provide greater light-gathering capability in applications where illumination levels are limited.
Designed for factory automation and precision inspection applications, the manual iris and focus allow optical parameters to be adjusted during machine commissioning.
The 12MP imaging capability makes the lens suitable for inspection of electronic components, connectors, assemblies, PCBs, and manufactured parts. The 20mm focal length provides a practical field of view for camera stations positioned at a moderate working distance.
For applications involving different sensor formats, TOWIN’s Sensor Guide can help engineers understand the relationship between sensor size, image circle, and field of view.
The C-Mount interface makes the lens suitable for integration with industrial cameras used in robotic inspection and automated handling systems. Manual focus and iris adjustment allow the optical configuration to be tuned after the camera and robot are installed.
For robotic imaging applications, see TOWIN’s Robotics Vision Solutions.
This 20mm C-Mount lens can be used with or evaluated for:
Before integration, confirm the camera sensor format, required field of view, working distance, C-Mount interface, and image circle requirements.
Q: What sensor sizes are compatible with this 20mm lens?
A: The lens is specified for both 1.1-inch and 1-inch image formats, providing flexibility when paired with large-format industrial cameras.
Q: What is the field of view on a 1.1-inch sensor?
A: The specified field of view is 49° diagonal, 42.5° horizontal, and 28° vertical on a 1.1-inch sensor.
Q: What is the field of view on a 1-inch sensor?
A: On a 1-inch sensor, the field of view is 44.5° diagonal, 39.5° horizontal, and 21° vertical.
Q: Is this a 12MP machine vision lens?
A: Yes. The lens is specified with 12MP resolution, making it suitable for high-resolution industrial imaging and machine vision applications.
Q: What does the -4.9% distortion specification mean?
A: The lens has a specified distortion of less than -4.9%. The negative value indicates the direction of geometric distortion. For applications requiring accurate dimensional measurement, system calibration and the actual distortion performance across the field should also be considered. TOWIN’s Distortion Guide provides more information.
Q: What is the advantage of the F1.4 aperture?
A: The F1.4 maximum aperture allows more light to reach the sensor compared with a lens using a smaller maximum aperture. The aperture can be manually adjusted from F1.4 to F22 according to the imaging environment.
Q: What is the minimum object distance of this lens?
A: The specified M.O.D. is 0.5m, meaning the minimum object distance is 500mm.
Q: Can the lens be used for factory automation?
A: Yes. Its 12MP resolution, large-format sensor compatibility, C-Mount interface, and manual optical controls make it suitable for various FA and industrial machine vision systems. For lens selection, TOWIN’s Lens Selection Guide can be used as a reference.
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