

2.1mm M12 5MP wide angle lens with 110° FOV, F2.6 aperture, 1/4-inch format, manual focus, and 2G2P+IRCF optical structure.
S02114009126F is 2.1mm High-end Wide Angle Lens with Built-In Filter, F2.6 M12/S-mount Wide-angle lens, 5-Megapixel High-resolution CCTV Lens.
| IMAGE FORMAT | 1/4″ |
| FOCAL LENGTH | 2.1mm |
| F.O.V.(OV5640) | 110°(D=4.60) |
| 91°(H=3.68) | |
| 71°(V=2.74) | |
| TV DISTORTION | <-8% |
| RESOLUTION | 5MP |
| APERTURE | F2.6 |
| MOUNT | M12X0.5 |
| IRIS | Fixed |
| FOCUS | Manual |
| ZOOM | Fixed |
| B.F.L. | 2.5mm |
| M.O.D. | 0.2m |
| STRUCTURE | 2G2P+IRCF |
This 2.1mm M12 5MP wide angle lens is designed for compact imaging systems that require a broad field of view without sacrificing the higher resolution available from a 5MP sensor. When used with the OV5640 sensor, it provides a 110° diagonal, 91° horizontal, and 71° vertical field of view. With an F2.6 fixed aperture, manual focus, 0.2m minimum object distance, and 2G2P+IRCF optical structure, the lens is well suited to embedded cameras, compact security devices, automotive auxiliary vision, and space-constrained machine vision equipment.
Its 2.1mm focal length offers significantly wider coverage than conventional standard-angle lenses while maintaining a practical optical configuration for 5MP imaging. Engineers can use TOWIN’s Lens Selection Guide to evaluate focal length, sensor format, field of view, and other optical parameters when selecting a lens for a specific camera system.
The 2.1mm focal length is particularly useful when a camera needs to capture a relatively broad area while retaining 5MP imaging capability. Compared with more extreme ultra-wide-angle configurations, its 110° diagonal FOV provides a practical balance between scene coverage and optical geometry.
Designed for compact 5MP wide-angle imaging applications, this lens provides a practical combination of resolution, field of view, and mechanical integration for small camera systems.
For projects requiring different focal lengths or optical configurations, explore TOWIN’s M12 Lens product range. Different M12 optical designs can be evaluated according to sensor format, field of view, resolution, distortion, and mechanical requirements.
When selecting this lens, the camera sensor and required field of view should be considered together. The specified 110° diagonal, 91° horizontal, and 71° vertical FOV applies to the OV5640 configuration. Using a different sensor can change the effective field of view, so the actual camera-lens combination should be verified before production.
The lens has a specified TV distortion of less than -8%. This provides a defined wide-angle optical profile, but it should not automatically be treated as a low-distortion measurement lens. For machine vision applications involving dimensional measurement or geometric inspection, distortion tolerance should be evaluated alongside the required accuracy. TOWIN’s Distortion Guide provides additional information about lens distortion and its effect on imaging.
For preliminary system design, the FOV Calculator can help estimate the relationship between focal length, sensor size, and viewing area. The Sensor Guide can also be used when checking lens and sensor compatibility.
Q: What is the focal length of this M12 lens?
A: The focal length is 2.1mm, providing a wide field of view for compact camera modules and embedded imaging systems.
Q: What is the field of view of the 2.1mm M12 lens?
A: With the specified OV5640 configuration, the lens provides 110° diagonal, 91° horizontal, and 71° vertical FOV.
Q: Is this lens suitable for 5MP cameras?
A: Yes. The lens is specified with 5MP resolution and is designed around a 1/4-inch image format. The stated FOV reference uses the OV5640 sensor.
Q: What mount does this lens use?
A: It uses an M12 x 0.5 mount, which is commonly used for compact embedded camera modules and small vision systems.
Q: Is the focus adjustable?
A: Yes. The lens uses manual focus and has a minimum object distance of 0.2m, allowing the optical focus to be adjusted during camera-module integration.
Q: Does the lens have an adjustable iris?
A: No. It uses a fixed F2.6 aperture and fixed iris configuration.
Q: Does this lens include an IR-cut filter?
A: Yes. The specified 2G2P+IRCF optical structure includes an infrared-cut filter component for visible-light imaging systems.
Q: Can this lens be used for machine vision?
A: Yes, it can be considered for machine vision systems requiring a wide viewing angle and 5MP image resolution. Final suitability depends on the required working distance, object size, distortion tolerance, and inspection accuracy.
Choosing a compact wide-angle lens requires more than comparing focal length alone. Sensor size, image resolution, working distance, field of view, distortion, and mechanical mounting should all be considered during system design. TOWIN’s Optical Design resources provide additional technical information for engineers developing customized imaging systems.
For application-specific requirements, see TOWIN’s M12 Lens Solutions, Machine Vision Solutions, Robotics Vision Solutions, and Smart Security Solutions.
If your project requires a specific sensor, FOV, working distance, housing size, or optical configuration, contact TOWIN’s optical engineering team for lens selection and customization support.
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