Low Distortion Lens – M502216006526

M502216006526 is Low-distortion CCTV lens with 1/6″ format, 2.2mm focal length, 65° horizontal FOV, F2.6 aperture, and 4P structure for close-range security monitoring.

2.2mm M5.5 Miniature Low Distortion Wide Angle Lens

This 2.2mm M5.5 miniature low distortion lens is designed for 1/6″ image sensors, providing a 65° horizontal field of view with less than 1% TV distortion. Its compact 4.1mm total track length, 1.2mm back focal length, and ultra-short 0.02m minimum object distance make it suitable for compact machine vision, close-range inspection, and embedded imaging applications.

M5.5 Low Distortion Lens Core Highlights

• <1% TV distortion provides controlled image geometry for inspection and measurement-oriented vision applications.
• 65° horizontal FOV delivers wide scene coverage from a compact 2.2mm focal length.
• 0.02m M.O.D. enables extremely close-range imaging of nearby objects and components.
• 4.1mm T.T.L. and 1.2mm M.B.F.L. support compact optical and mechanical integration.
• M5.5×0.25 miniature mount is suitable for small embedded camera modules and space-constrained vision equipment.

2.2mm M5.5 Low Distortion Lens Applications

Close-Range Machine Vision

The combination of a 2.2mm focal length, 65° horizontal FOV, and 0.02m M.O.D. makes this lens particularly suitable for compact vision systems that need to observe objects at very short distances.

Unlike a conventional wide-angle lens designed primarily for distant scene coverage, its extremely short minimum object distance allows the camera to be positioned close to the inspection target while maintaining useful image coverage.

Typical applications include:

• Close-range component inspection
• Compact assembly inspection
• Small-part imaging
• Embedded machine vision modules
• Electronics inspection
• Equipment interior monitoring
• Compact robotic vision systems

Designed for close-range machine vision applications where short working distance and controlled distortion are both important.

For broader industrial inspection requirements, explore TOWIN’s Machine Vision solutions.

Low Distortion Imaging

With TV distortion below 1%, this lens is designed for applications where image geometry needs to remain well controlled. Lower distortion can help reduce the optical deformation of straight lines near the image edges compared with more strongly distorted wide-angle designs.

This makes the lens suitable for:

• Visual inspection
• Object positioning
• Edge detection
• Dimension-related imaging
• Pattern recognition
• Compact automated inspection

For engineers evaluating distortion requirements, TOWIN’s Distortion Guide provides additional information about lens distortion and its influence on machine vision imaging.

You can also compare this model with other options in TOWIN’s Low Distortion Lens collection.

Compact Embedded Vision

The M5.5×0.25 mount and 4.1mm total track length make this lens suitable for camera assemblies where optical volume is limited. Its fixed focal length and fixed F2.6 aperture provide a straightforward optical configuration for embedded camera development.

Potential compatible devices include:

• Miniature industrial cameras
• Embedded vision modules
• Compact AI cameras
• Small robotic cameras
• Inspection sensors
• Electronic equipment cameras
• OEM camera modules

The 1/6″ image format should be matched with an appropriate image sensor during camera development. TOWIN’s Sensor Guide can help engineers evaluate sensor and lens compatibility.

Ultra-Close Inspection

The 0.02m M.O.D., equivalent to only 20mm, is one of the key characteristics of this optical design. It allows the lens to focus on objects positioned very close to the camera, which is useful when the available installation space between the camera and target is extremely limited.

This characteristic can be valuable for inspecting small components, narrow equipment spaces, and objects located close to compact camera housings.

Frequently Asked Questions

Q: What sensor size is this 2.2mm M5.5 lens designed for?
A: The lens is specified for 1/6″ image sensors and provides a 65° horizontal field of view.

Q: Is this lens a fisheye lens?
A: No. Despite its short 2.2mm focal length, the lens has less than 1% TV distortion, so it is better classified as a low distortion wide-angle lens rather than a fisheye lens.

Q: What is the minimum object distance of this lens?
A: The M.O.D. is 0.02m, or approximately 20mm, allowing the lens to image objects positioned very close to the camera.

Q: Why is the <1% distortion specification important?
A: Low distortion helps maintain more accurate image geometry, which can be useful for inspection, positioning, edge detection, and other machine vision applications where excessive optical deformation could affect image analysis.

Q: What is the field of view of this 2.2mm lens?
A: The specified horizontal field of view is 65°. The actual vertical and diagonal FOV will depend on the sensor’s active dimensions.

Q: Is the aperture adjustable?
A: No. The lens uses a fixed F2.6 aperture, providing a consistent optical configuration for compact camera designs.

Q: What are the advantages of the M5.5×0.25 mount?
A: The M5.5×0.25 mount provides a compact mechanical interface suitable for miniature camera modules and embedded imaging equipment where conventional larger lens mounts may not fit.

Q: What does the 4P optical structure mean?
A: 4P indicates a four-plastic-element optical construction. The compact design helps achieve the required focal length and imaging characteristics within a small optical package.

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