

3.2mm 5MP M6 low distortion lens with 70° FOV, <1% distortion, F2.8 aperture and 0.1m M.O.D. for compact machine vision systems.
M603214005828 is 3.2mm Ultra-low-distortion lens, F2.8 aperture M6X0.35 mount wide-angle lens, 1/4″ High-resolution 5-Megapixel CCTV lens.
| IMAGE FORMAT | 1/4″ |
| FOCAL LENGTH | 3.2mm |
| F.O.V. | 70°(D=4.52) |
| 58.5°(H=3.62) | |
| 45.5°(V=2.72) | |
| RESOLUTION | 5 Megapixel |
| DISTORTION | <1% |
| APERTURE | F2.8 |
| MOUNT | M6X0.35 |
| IRIS | Fixed |
| C.R.A. | <25° |
| B.F.L. | 1.32mm |
| M.O.D. | 0.1m |
| CONSTRUCTION | 4P |
This 3.2mm M6 lens is a compact 5MP low distortion wide angle lens designed for 1/4″ imaging systems. It provides a 70° diagonal, 58.5° horizontal, and 45.5° vertical field of view while maintaining less than 1% distortion. With a fixed F2.8 aperture, 0.1m M.O.D., 1.32mm B.F.L., and compact M6X0.35 mount, it is well suited to space-constrained industrial and machine vision systems requiring controlled image geometry.
This lens is positioned differently from ultra-wide M12 optics. Its 70° diagonal FOV and <1% distortion provide a balanced combination of scene coverage and image geometry, making it better suited to applications where the captured image needs to remain relatively natural and dimensionally stable.
Typical application scenarios include:
Designed for compact low-distortion machine vision applications where controlled optical geometry, 5MP resolution, and a miniature M6 mounting interface are important.
For more miniature mounting options, TOWIN’s M8/M7/M6/M5/M3.5 Small Mount Lens category provides additional compact lens configurations.
The lens is specified for a 1/4″ image format with 5MP resolution, making it suitable for compact camera modules using compatible sensors.
Potential device configurations include:
The C.R.A. <25° specification should also be considered when matching the lens to the selected image sensor. Sensor size, pixel architecture, lens position, and optical performance should be evaluated together during system development.
TOWIN’s Sensor Guide provides additional information for sensor and lens compatibility.
One of the main advantages of this lens is its <1% distortion specification. Compared with highly distorted fisheye or ultra-wide designs, this provides a more controlled image geometry while still maintaining a useful 70° diagonal field of view.
This makes the lens a stronger candidate for applications where image deformation needs to be limited, such as inspection, positioning, detection, and certain measurement-oriented vision systems.
However, optical distortion is only one factor affecting final measurement accuracy. Working distance, camera calibration, sensor characteristics, mechanical alignment, and image-processing algorithms should also be considered.
For a deeper explanation of lens distortion, see TOWIN’s Distortion Guide.
The lens provides:
With a 0.1m M.O.D., the lens can be used for relatively close-range imaging while maintaining controlled optical distortion.
The 3.2mm focal length provides a practical balance between coverage and image geometry for compact 1/4″ imaging systems. Engineers can use the FOV Calculator to estimate the relationship between sensor size, focal length, working distance, and field of view during lens selection.
The M6X0.35 mount makes this lens particularly suitable for applications where a conventional M12 or larger mounting interface may occupy too much mechanical space.
Its 1.32mm B.F.L. and 0.1m M.O.D. provide important mechanical and optical references when designing a compact camera enclosure or embedded vision module.
The fixed iris and fixed focal configuration also provide a straightforward optical architecture for applications with a predefined imaging distance and lighting environment.
For more information about optical integration and lens configuration, visit TOWIN’s Optical Design resources.
This lens combines 5MP resolution, <1% distortion, 70° diagonal FOV, M6X0.35 mounting, and 0.1m M.O.D. in a compact optical configuration.
It is particularly suitable when a system requires more controlled image geometry than a fisheye or extreme wide-angle lens can provide, while still needing a relatively broad viewing angle and very small mechanical footprint.
For engineers comparing focal length, sensor size, FOV, and working distance, TOWIN’s Lens Selection Guide can help identify the appropriate optical configuration.
For custom lens requirements or application-specific optical evaluation, contact TOWIN for further engineering support.
Q: What sensor format is this M6 lens designed for?
A: The specified image format is 1/4″, with a resolution of 5 Megapixel.
Q: What is the field of view of the 3.2mm lens?
A: The specified FOV is 70° diagonal, 58.5° horizontal, and 45.5° vertical.
Q: Is this a low-distortion lens?
A: Yes. The specified distortion is less than 1%, making it suitable for applications where controlled image geometry is important.
Q: What is the minimum object distance?
A: The specified M.O.D. is 0.1m.
Q: What mount does this lens use?
A: It uses an M6X0.35 mount.
Q: What is the aperture of this lens?
A: The lens has a fixed F2.8 aperture.
Q: What does the C.R.A. specification mean for this lens?
A: The specified C.R.A. is less than 25°. This parameter can be important when matching the lens optical design to the characteristics of the selected image sensor.
Q: Is this lens suitable for machine vision?
A: Yes. Its 5MP resolution, <1% distortion, 70° diagonal FOV, close 0.1m M.O.D., and compact M6 mount make it suitable for a range of compact machine vision and industrial inspection applications.
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