

4mm 6MP M12 wide angle lens with 135° FOV, F1.8 aperture, manual focus and 6G+IRCF structure for embedded and robotics vision.
CCL11804018MPF-135° wide angle CCTV lens,6 MP F1.8 M12-mount lens
| IMAGE FORMAT | 1/1.8″ |
| FOCAL LENGTH | 4mm |
| F.O.V.(@IMX178) | 135°(D=8.95) |
| 110°(H=7.43) | |
| 73° (V=4.99) | |
| RESOLUTION | 6 MP |
| APERTURE | F1.8 |
| DISTORTION | <-35% |
| MOUNT | M12 |
| IRIS | Fixed |
| FOCUS | Manual |
| ZOOM | Fixed |
| B.F.L. | 7.5mm |
| STRUCTURE | 6G+IRCF |
This 4mm 6MP M12 wide angle lens is designed for compact imaging systems that require a broad field of view and reliable image coverage. With a 135° diagonal FOV on the 1/1.8″ Sony IMX178 sensor, F1.8 fixed aperture, M12x0.5 mount, and 6G+IRCF optical structure, it is well suited for embedded cameras, robotics vision, smart security, and wide-area scene monitoring.
For systems where field coverage is more important than geometric accuracy, this fixed focal lens provides a practical optical solution for capturing a larger scene from a compact camera housing.
This 4mm M12 lens is designed for applications where a compact camera needs to capture a relatively large scene without requiring a long working distance. Its 135° diagonal field of view makes it particularly useful when camera placement is restricted or when surrounding objects need to remain within the image.
The compact M12 mount and 4mm focal length make this lens suitable for embedded smart cameras used for room monitoring, equipment observation, access-area monitoring, and general scene awareness. The wide FOV allows a single camera to cover more of the surrounding environment.
Compatible devices include:
Designed for robotics vision applications, this wide angle lens can provide robots and mobile platforms with broad environmental visibility. The 135° diagonal FOV is useful for obstacle awareness, navigation assistance, workspace monitoring, and close-range environmental perception.
It can be integrated into:
For broader optical system selection, see TOWIN’s Robotics Vision Solutions.
The 4mm focal length provides a wider perspective than conventional narrow-angle lenses, making it suitable for monitoring entrances, corridors, rooms, equipment areas, and other locations where scene coverage is important.
Typical devices include:
See TOWIN’s Smart Security Solutions for additional optical solutions for intelligent security systems.
The 6MP resolution combined with a wide field of view makes this lens suitable for AI cameras that need to capture people, objects, or environmental information across a relatively large image area. It can support applications such as object detection, occupancy monitoring, activity analysis, and general scene understanding.
Because the distortion is below -35%, this lens should be selected primarily for wide-area coverage and visual awareness, rather than applications requiring highly accurate geometric measurement.
The M12x0.5 interface is well suited to compact camera assemblies where installation space is limited. The manual-focus design also allows optical adjustment during camera assembly to achieve the required imaging performance at the target working distance.
For help selecting focal length and field of view, use TOWIN’s FOV Calculator or Focal Length Calculator.
Q: What type of lens is this?
A: This is a 4mm fixed focal M12 wide angle lens with fisheye characteristics. It provides up to 135° diagonal FOV on the 1/1.8″ Sony IMX178 sensor.
Q: What sensor is this M12 lens designed for?
A: The lens is specified for the 1/1.8″ image format and is tested with the Sony IMX178 sensor. Its 8.95mm image coverage is suitable for this sensor format.
Q: Is this a low distortion lens?
A: No. With distortion below -35%, this lens is better classified as a wide angle lens rather than a low distortion lens. It is designed to prioritize broad scene coverage over precise geometric reproduction.
Q: What applications are suitable for this 4mm M12 lens?
A: It is suitable for embedded smart cameras, robotics vision, indoor monitoring, AI vision, mobile robots, compact security cameras, and other applications requiring a wide field of view.
Q: What does IRCF mean in the lens specification?
A: IRCF refers to an IR Cut Filter. It helps block infrared wavelengths in visible-light imaging systems, supporting more natural color reproduction under normal lighting conditions.
Q: Does the lens support manual focus?
A: Yes. This model uses manual focus, allowing the optical focus position to be adjusted during camera assembly according to the required working distance.
Q: What is the advantage of the F1.8 aperture?
A: The F1.8 aperture provides relatively strong light-gathering capability, which can help maintain image brightness in indoor environments and other scenes with limited illumination.
Q: Can TOWIN customize this M12 lens?
A: Yes. TOWIN can support customized optical and mechanical solutions based on sensor format, focal length, FOV, mount, distortion, aperture, and application requirements. Contact TOWIN through the Contact page to discuss your project.
When selecting a wide angle or M12 lens, field of view, sensor size, focal length, and distortion should be evaluated together. TOWIN provides additional resources through the Lens Basics, Sensor Guide, and Lens Selection Guide.
You can also explore the complete range of M12 Lenses for different sensor formats, focal lengths, and application requirements.
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