Low Distortion Lens – M71801200245

M71801200245 is 18mm Low distortion lens with 1/2″ Φ8 M7x0.35 Mount, 30° diagonal F.O.V., F4.5 aperture, and 50mm M.O.D., For imaging applications.

18mm M7 Low Distortion Machine Vision Lens

This 18mm M7 low distortion machine vision lens is designed for compact industrial imaging systems requiring precise image geometry and close-range focusing. With a 1/2″ image format, <0.05% distortion, 50mm M.O.D., and M7 × 0.35 mount, it provides a compact optical solution for precision inspection and embedded vision applications.

M7 Low Distortion Lens Core Highlights

• <0.05% Low Distortion: Maintains highly accurate image geometry for precision imaging.
• 18mm Fixed Focal Length: Provides a consistent field of view for stable inspection setups.
• Compact M7 Mount: Suitable for space-constrained embedded vision equipment.
• 50mm M.O.D.: Supports close-range inspection and compact object imaging.
• 1/2″ Image Format: Designed for compact industrial cameras using 1/2″ sensors.

18mm M7 Low Distortion Lens Applications

Core Application Scenes

This 18mm M7 miniature machine vision lens is designed for precision imaging where optical accuracy and compact mechanical dimensions are both important. Its <0.05% distortion specification helps minimize geometric deformation, making it suitable for applications where the position, shape, or dimensions of an object need to remain visually consistent across the image.

The 50mm minimum object distance also makes this lens suitable for close-range inspection inside compact equipment. Unlike a conventional surveillance lens designed primarily for broad-area monitoring, this fixed focal lens is better suited to dedicated imaging positions where the camera-to-object distance is controlled.

For engineers developing compact inspection equipment, the M7 × 0.35 interface helps reduce the overall optical assembly size. The 18mm focal length and 1/2″ image format provide a practical combination for embedded cameras, compact inspection modules, and precision imaging systems.

For applications where lens selection depends on sensor dimensions and required image coverage, engineers can use the Lens Selection Guide to evaluate focal length, sensor format, and field-of-view requirements.

Compatible Device List

• Compact Industrial Cameras: Suitable for camera modules using 1/2″ image sensors in space-constrained machine vision equipment.
• Embedded Vision Modules: The M7 × 0.35 mount is suitable for compact embedded cameras where a smaller optical assembly is required.
• Precision Inspection Systems: The <0.05% distortion specification supports dimensional observation, component inspection, and geometry-sensitive imaging.
• Close-Range Imaging Equipment: The 50mm M.O.D. allows the lens to be positioned relatively close to the inspection target.
• Custom Vision Devices: The compact optical format can be integrated into OEM imaging equipment requiring a dedicated fixed focal-length solution.

When determining the required coverage for a fixed 18mm lens, the FOV Calculator can help engineers estimate the visible area based on sensor and working-distance requirements.

Designed for compact precision inspection and embedded machine vision applications.

Optical Selection Considerations

The combination of 18mm focal length, 1/2″ image format, and 30° diagonal FOV makes this lens suitable for controlled imaging distances rather than wide-area surveillance. Its <0.05% distortion specification is particularly relevant when maintaining image geometry is more important than maximizing field coverage.

The lens also has a 50mm M.O.D. and 6.8mm M.B.F.L., which can be considered when integrating the lens into a compact camera housing or inspection module. Engineers can review the Optical Design resources when evaluating mechanical and optical integration requirements.

For applications requiring extremely small optical assemblies, the complete M8/M7/M6/M5/M3.5 Small Mount Lenses category provides additional miniature lens options.

Frequently Asked Questions

Q: What sensor size is this 18mm M7 lens designed for?
A: This lens supports a maximum image format of Φ8 and is specified for 1/2″ image sensors.

Q: What is the field of view of the 18mm lens?
A: With a 1/2″ image format, the specified field of view is 30° diagonal, 24° horizontal, and 18° vertical.

Q: Is this lens a low distortion lens?
A: Yes. The specified distortion is below -0.05%, making it suitable for applications where accurate image geometry is important.

Q: Is the 18mm M7 lens suitable for machine vision?
A: Yes. Its fixed 18mm focal length, low distortion, 1/2″ image format, and 50mm M.O.D. make it suitable for compact machine vision and precision inspection systems.

Q: What type of mount does this lens use?
A: The lens uses an M7 × 0.35 mount, making it suitable for compact camera modules and miniature imaging equipment.

Q: What is the minimum object distance of this lens?
A: The specified M.O.D. is 50mm, allowing relatively close-range imaging when the camera and target geometry are properly configured.

Q: Does this lens include an IRCF?
A: No. The specification states Without IRCF, so an IR-cut filter or other optical filtering should be evaluated separately according to the camera system requirements.

Q: Is this an interchangeable zoom lens?
A: No. This is an 18mm fixed focal lens, providing a consistent optical configuration for applications with a predetermined working distance and field of view.

Related Resources

For engineers selecting an industrial lens based on sensor size, focal length, field of view, and working distance, the Lens Basics and Sensor Guide provide useful optical selection information.

If the application requires geometric accuracy, the Distortion Guide can help explain how lens distortion affects machine vision measurements and image analysis.

For customized optical requirements, including different focal lengths, mounts, image formats, or mechanical configurations, engineers can Contact Towin to discuss the required lens specification.

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