

The 3.1mm 4MP M9 lens provides a 126° diagonal FOV, F2.0 aperture, M9x0.5 mount, and IR Cut component for compact wide-angle imaging systems.
CCL13031MPFM9 1/3″ 3.1mm 4MP M9 lens with 126° FOV
| IMAGE FORMAT | 1/3″ |
| FOCAL LENGTH | 3.1mm |
| F.O.V. | 126°(D) |
| 92°(H) | |
| 67°(V) | |
| RESOLUTION | 4 MegaPixel |
| DISTORTION | <-27% |
| APERTURE | F2.0 |
| MOUNT | M9X0.5 |
| IRIS | Fixed |
| FOCUS | Manual |
| ZOOM | Fixed |
| B.F.L. | 4.79mm |
| M.O.D. | 0.2m |
| LENS COMPOMEMT | 6G+IR cut |
The 3.1mm 4MP M9 lens is a compact ultra-wide-angle fixed focal lens designed for imaging systems that need broad scene coverage in a small camera form factor. With a 126° diagonal FOV, 92° horizontal FOV, and 67° vertical FOV, it can capture a substantially wider scene than conventional standard-angle lenses while maintaining 4MP imaging performance.
The M9x0.5 mounting interface provides a compact optical solution for space-constrained camera modules. Its F2.0 aperture, fixed iris, manual focus, and 0.2m minimum object distance make the lens suitable for close-range monitoring and embedded imaging applications. The integrated IR Cut component further supports visible-light imaging by helping manage unwanted infrared wavelengths in applications using standard color cameras.
This 3.1mm M9 lens is particularly suitable for compact wide-area imaging systems where camera size and scene coverage are both important. Its 92° horizontal FOV allows the camera to monitor a broad area without requiring an extremely large installation footprint, making it suitable for embedded monitoring modules, compact robotics cameras, smart devices, and equipment-mounted vision systems.
The 0.2m minimum object distance also supports relatively close-range imaging. This makes the lens useful when the camera must observe objects or spaces positioned relatively close to the optical system, while the 4MP resolution provides sufficient image detail for general monitoring and visual analysis.
The integrated IR Cut component makes this lens particularly relevant to visible-light camera modules where consistent color imaging is preferred over infrared-sensitive operation.
Compatible devices: 1/3″ sensor camera modules, compact monitoring cameras, embedded vision cameras, robotics vision modules, smart-device cameras, equipment-monitoring cameras, and other imaging systems using an M9x0.5 lens interface.
For applications requiring a different miniature lens interface, you can explore TOWIN’s Other Mount Lenses. For help selecting the correct sensor and optical configuration, refer to the Sensor Guide and Lens Selection Guide.
Q: What type of lens is the 3.1mm M9 lens?
A: It is a 3.1mm fixed focal, ultra-wide-angle lens with an M9x0.5 mount, designed for 1/3″ sensors and 4MP imaging.
Q: What is the FOV of this 3.1mm lens?
A: The lens provides a 126° diagonal FOV, 92° horizontal FOV, and 67° vertical FOV.
Q: What does the IR Cut component do?
A: The integrated IR Cut component helps block unwanted infrared wavelengths, supporting more consistent visible-light color imaging in compatible camera systems.
Q: Is this an IR corrected lens?
A: No. An IR Cut component and an IR corrected optical design are different functions. The supplied specification identifies an IR Cut component but does not specify IR correction.
Q: Is the 3.1mm M9 lens suitable for close-range imaging?
A: Yes. With a minimum object distance of 0.2m, it can be considered for close-range wide-area imaging applications where the camera needs to cover a relatively large scene.
Q: Is this lens a fisheye lens?
A: It should not automatically be classified as a fisheye lens. Although its 126° diagonal FOV is very wide, the supplied specifications do not identify a fisheye optical design.
Q: What cameras are compatible with this M9 lens?
A: The lens is specified for a 1/3″ image format and uses an M9x0.5 mount, making it suitable for compatible compact camera modules and embedded imaging systems.
Q: Can TOWIN customize an M9 lens for a specific camera module?
A: TOWIN can evaluate customized optical requirements such as focal length, sensor format, field of view, resolution, and mechanical interface. Contact TOWIN with your camera specifications and application requirements.
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