

4mm 7MP M12 ultra-wide-angle lens with 144° FOV, F2.0 aperture and 1/1.7″ format for CCTV, smart security and embedded cameras.
CCL117040MPF-1/1.7″ wide angle lens 7MP F2.0 M12 mount lens
| IMAGE FORMAT | 1/1.7″ |
| FOCAL LENGTH | 4mm |
| F.O.V.(@IMX324) | 144°(D) |
| 125°(H) | |
| 63° (V) | |
| RESOLUTION | 7 MP |
| APERTURE | F2.0 |
| DISTORTION | <-63% |
| MOUNT | M12 |
| IRIS | Fixed |
| FOCUS | Manual |
| ZOOM | Fixed |
| B.F.L. | 7.5mm |
| CONSTRUCTION | 6G+IRF |
This 4mm 7MP M12 wide angle lens is designed for compact camera modules requiring broad scene coverage in a small optical package. With a 144° diagonal FOV, 125° horizontal FOV, F2.0 aperture, and M12 mount, it is well suited for CCTV, smart security, embedded vision, and other space-constrained imaging systems. The lens uses a 1/1.7″ image format and is compatible with the IMX324 sensor platform.
For more M12 optical solutions, explore TOWIN’s M12 lenses for different focal lengths, sensor formats, and application requirements.
The combination of a 4mm focal length and 144° diagonal FOV makes this lens suitable when a camera needs to observe a large area from a relatively short installation distance. Compared with longer focal length M12 lenses, it provides substantially broader scene coverage, making it useful for entrances, indoor spaces, compact monitoring devices, and embedded cameras.
Its 1/1.7″ image format and 7MP resolution also provide a good match for high-resolution compact camera modules. The M12 interface simplifies mechanical integration, while the 7.5mm BFL helps support compact optical designs.
Because the specified distortion is <-63%, this lens prioritizes extremely wide coverage rather than geometrically corrected imaging. It is therefore better suited to applications where maximum viewing area is more important than straight-line reproduction.
For applications where geometric accuracy is critical, TOWIN also provides low distortion lens solutions.
The 4mm focal length provides a 144° diagonal FOV and 125° horizontal FOV on the IMX324 sensor, allowing the camera to cover a large area with a single compact lens.
This wide viewing angle can help reduce the number of cameras required in applications such as:
The strong distortion specification is an expected characteristic of this type of ultra-wide optical design. For scenes where a large viewing angle is more important than rectilinear image geometry, this optical approach can provide practical coverage advantages.
With 7MP resolution and an F2.0 aperture, the lens is designed for camera modules that require both detailed image capture and a relatively bright optical system.
The 7MP capability makes it suitable for higher-resolution surveillance and embedded imaging compared with basic low-resolution camera modules. Meanwhile, the F2.0 aperture supports efficient light transmission for indoor environments and other applications where lighting conditions can vary.
The combination is particularly useful for compact camera designs where the lens must balance resolution, field of view, aperture, and mechanical size.
The M12 mount is widely used in compact camera modules because it provides a practical mechanical interface while allowing manufacturers to select different focal lengths and optical configurations.
This lens can be integrated into compact camera housings where a wide field of view is required without moving to a larger C-Mount or CS-Mount optical system.
For engineers comparing different focal lengths and sensor combinations, TOWIN’s lens selection guide can help determine the appropriate optical configuration.
Designed for ultra-wide-angle monitoring applications, this 4mm M12 lens is particularly suitable for camera systems that need to capture a large area from a short distance.
1. Smart Security & Indoor Monitoring
The 125° horizontal FOV allows a single camera to cover a broad indoor scene, making the lens suitable for entrances, corridors, retail spaces, small offices, and other monitored areas.
For broader security system requirements, see TOWIN’s smart security solutions.
2. Embedded Wide-Angle Cameras
The compact M12 interface makes this lens suitable for embedded camera modules where installation space is limited. It can be integrated into smart devices, compact monitoring equipment, and specialized imaging modules.
3. Entrance & Doorway Surveillance
The ultra-wide field of view helps capture people and activity across a wide entrance area without requiring precise camera alignment. This can be useful for door monitoring, access areas, reception zones, and small commercial environments.
4. Retail & Commercial Monitoring
For retail stores and commercial environments, the lens can provide broad scene observation from ceiling, wall, or compact camera positions. Its wide-angle design is useful where minimizing blind zones is a priority.
5. Compact Panoramic-View Systems
The combination of a 4mm focal length and 144° diagonal FOV makes the lens appropriate for systems that require an expanded viewing area from a single camera module.
This lens can be considered for integration with:
For additional application-specific optical configurations, explore TOWIN’s industrial lens solutions and machine vision solutions.
Q: What sensor is this 4mm M12 lens designed for?
A: This lens is specified for a 1/1.7″ image format and its FOV data is based on the Sony IMX324 sensor. It provides 144° diagonal, 125° horizontal, and 63° vertical FOV on this configuration.
Q: Is this a wide angle or fisheye lens?
A: With a 144° diagonal FOV and <-63% distortion, the lens has strong ultra-wide-angle characteristics and can serve fisheye-type applications. However, the final product category should follow the optical design and TOWIN’s internal classification standard.
Q: Is this an IR corrected lens?
A: No. The specification lists 6G+IRF, which indicates a six-element optical construction with an IR filter. It should not be described as an IR corrected optical design unless IR correction is explicitly specified.
Q: What is the advantage of the 4mm focal length?
A: The 4mm focal length provides a very wide viewing angle, allowing the camera to capture a larger scene from a short installation distance. It is useful when broad coverage and reduced blind areas are important.
Q: Is this lens suitable for CCTV cameras?
A: Yes. Its 7MP resolution, F2.0 aperture, ultra-wide FOV, and M12 mount make it suitable for compact CCTV and smart security camera modules that prioritize broad scene coverage.
Q: Can this lens be used for machine vision?
A: It can be considered for machine vision systems where wide-area observation is more important than precise geometric accuracy. Because the specified distortion is high, it is not the preferred choice for dimensional measurement or precision inspection.
Q: Does this lens have autofocus?
A: No. The lens uses manual focus with a fixed focal length. The optical configuration is therefore better suited to camera systems where the working distance can be established during installation.
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