Low Distortion Lens – S18012501720

S18012501720 is Low-distortion 1/2.5″ M12 mount 3-Megapixel lens with 18mm focal length and 22° diagonal field of view Suitable for security Surveillance.

18mm 3MP M12 Low Distortion Lens

This 18mm M12 low distortion lens is designed for 1/2.5″ image sensors and 3MP industrial imaging applications. With an F2.0 fixed aperture and TV distortion below 0.1%, it delivers controlled image geometry and strong light-gathering capability for compact machine vision, inspection, and embedded imaging systems.

Product Core Highlights

• 18mm fixed focal length for controlled target framing.
• <0.1% TV distortion for highly accurate image geometry.
• F2.0 aperture for improved light collection in challenging illumination.
• 3MP resolution for detailed industrial image capture.
• Compact M12 × 0.5 mount for embedded vision integration.

18mm M12 Low Distortion Lens Applications

Core Application Scenes

This 18mm 3MP M12 lens is designed for compact imaging systems that require a relatively narrow, controlled field of view together with extremely low optical distortion. Its 22° diagonal FOV helps concentrate the camera on a defined target region, making it suitable for fixed-position imaging rather than large-area scene coverage.

The lens is particularly useful when image geometry needs to remain highly consistent. With TV distortion below 0.1%, it can support applications such as component positioning, edge inspection, dimensional analysis, and visual verification where excessive lens distortion could affect downstream image processing.

Another key characteristic is the F2.0 fixed aperture. Compared with smaller-aperture designs, the larger aperture can provide stronger light transmission, making this lens suitable for industrial environments where illumination is limited or where a shorter exposure time is desirable. It can therefore be considered for machine vision equipment operating with controlled but non-ideal lighting conditions.

The 0.2m minimum object distance makes the lens suitable for close-to-medium working distances, while the M12 × 0.5 interface allows integration into compact camera modules and embedded imaging equipment. For engineers designing a new system, the Lens Selection Guide can help evaluate focal length, sensor size, working distance, and application requirements together.

Compatible Device List

• Compact Machine Vision Cameras: Suitable for 1/2.5″ 3MP camera modules used in fixed inspection systems.
• Industrial Inspection Modules: The low-distortion optical design supports imaging tasks involving object position, shape, and dimensional consistency.
• Low-Light Embedded Cameras: The F2.0 aperture provides useful light-gathering capability for compact cameras operating under restricted illumination.
• Robotic Vision Modules: The controlled FOV can be used for localized component observation and robotic inspection tasks.
• OEM Imaging Equipment: The M12 × 0.5 mount allows integration into customized compact camera housings and embedded vision systems.

For additional compact optical solutions, see the M12 Lenses product range. For automated inspection applications, explore TOWIN’s Machine Vision solution.

If you need to determine whether the 18mm focal length provides sufficient target coverage, the FOV Calculator can help estimate the field of view for a specific sensor and working distance. You can also use the Focal Length Calculator when comparing alternative focal lengths.

Designed for precision inspection, low-light industrial imaging, and compact embedded machine vision applications.

Frequently Asked Questions

Q: What sensor format is this 18mm M12 lens designed for?
A: This lens is designed for 1/2.5″ image sensors and supports 3MP imaging performance.

Q: What is the field of view of the 18mm lens?
A: The lens provides a 22° diagonal FOV, 17° horizontal FOV, and 13° vertical FOV.

Q: How low is the distortion of this M12 lens?
A: The specified TV distortion is less than 0.1%, providing highly controlled image geometry for precision imaging applications.

Q: What advantage does the F2.0 aperture provide?
A: The F2.0 aperture allows relatively strong light transmission, which can be beneficial for industrial imaging systems operating under limited illumination or requiring faster exposure settings.

Q: Is this lens suitable for machine vision applications?
A: Yes. Its low distortion, 3MP resolution, controlled FOV, and M12 × 0.5 mount make it suitable for selected compact machine vision and industrial inspection systems.

Q: What is the minimum object distance of this lens?
A: The specified M.O.D. is 0.2m, or 200mm. Actual performance should be evaluated according to the target size, sensor characteristics, and required image quality.

Q: Is the 18mm M12 lens a fixed focal length lens?
A: Yes. It uses a fixed 18mm focal length and fixed iris, providing a consistent optical configuration for fixed-camera applications.

Q: How can I choose the correct focal length for my application?
A: Focal length selection depends mainly on sensor size, working distance, and required field of view. The Lens Selection Guide can help with the selection process, while the Sensor Guide explains sensor-format considerations. For application-specific requirements, you can contact TOWIN for technical assistance.

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