Low Distortion Lens – S25023002028F

S25023002028F is 25mm High-Resolution low-distortion lens with Built-In Filter, 2/3″ High NA M12 mount lens, F2.8, 8 Megapixel CCTV HD lens.

25mm 8MP M12 Ultra Low Distortion Lens

This 25mm 8MP M12 ultra low distortion lens is designed for precision industrial imaging systems that require high-resolution image capture and exceptional geometric accuracy. With a large 2/3″ image format, 25mm focal length, and TV distortion below 0.1%, the lens is well suited to machine vision and factory automation applications where image geometry must remain highly consistent across the field of view.

The 25mm focal length provides a controlled 25° diagonal field of view, 20° horizontal field of view, and 15° vertical field of view on a 2/3″ sensor. Combined with 8MP resolution and an F2.8 aperture, this fixed focal lens offers a practical optical configuration for detailed inspection, measurement, recognition, and positioning tasks.

The M12×0.5 mount provides compact mechanical integration, while the 0.2m minimum object distance allows the lens to be used for relatively close-range inspection. Its 26.25mm total optical length and 6G+IRCF construction further support compact industrial camera designs.

For related optical solutions, explore TOWIN’s M12 Lenses and Low Distortion Lenses.

M12 Low Distortion Lens Core Highlights

• Ultra-Low Distortion: TV distortion below 0.1% helps preserve accurate object geometry for precision imaging and inspection.
• 8MP High-Resolution Imaging: Designed to support detailed image acquisition for demanding industrial vision applications.
• 2/3″ Large Image Format: Provides compatibility with larger sensors used in higher-performance machine vision cameras.
• 25mm Precision Focal Length: Delivers a controlled 25° diagonal FOV for targeted inspection rather than broad-area imaging.
• Compact M12×0.5 Mount: Combines precision optical performance with a compact mechanical interface for embedded industrial cameras.

M12 Low Distortion Lens Applications

Precision Imaging with Ultra-Low Distortion

The primary advantage of this lens is its <0.1% TV distortion specification. In precision machine vision, geometric distortion can affect measurements, object recognition, dimensional analysis, and positional calculations. By minimizing distortion, the lens helps maintain a more faithful relationship between the captured image and the physical object.

The 25mm focal length provides a relatively narrow and controlled viewing angle compared with wide-angle M12 lenses. This makes the lens more appropriate for focused inspection tasks where the target occupies a defined area of the image rather than applications requiring maximum scene coverage.

Designed for Precision Machine Vision Application

This lens is Designed for precision machine vision application where high resolution and geometric consistency are important. The combination of 8MP resolution, 2/3″ sensor support, 25mm focal length, and <0.1% TV distortion makes it particularly relevant to inspection systems that analyze object dimensions, edges, alignment, or positional relationships.

Potential applications include:

• Dimensional inspection
• Precision component inspection
• Automated optical inspection
• Object measurement
• Edge and contour detection
• Part alignment
• Industrial recognition
• Surface inspection
• Factory automation vision
• Robotic inspection

For additional industrial imaging solutions, see TOWIN’s Machine Vision solutions.

Factory Automation and FA Vision

The lens is also suitable for selected FA lens applications where cameras need to inspect individual components or controlled working areas. Its 25mm focal length helps provide a more concentrated field of view, while the <0.1% distortion specification is beneficial when image geometry influences the inspection result.

For broader factory automation requirements, users can compare TOWIN’s optical solutions through the Lens Selection Guide.

Compatible Device Types

This lens can be considered for integration with:

• 2/3″ machine vision cameras
• M12 industrial cameras
• Factory automation cameras
• Automated inspection cameras
• Measurement vision systems
• Robotic vision cameras
• Component inspection equipment
• Embedded industrial imaging systems
• Optical inspection modules

Why Ultra-Low Distortion Matters in Machine Vision

For many industrial imaging applications, the camera is not simply recording an image—it is extracting measurable information from that image. Distortion can cause straight lines to appear curved and can introduce positional or dimensional errors, particularly toward the edges of the image.

With TV distortion specified below 0.1%, this 25mm lens is designed for applications where preserving image geometry is a priority. This makes it fundamentally different from wide-angle lenses designed primarily for maximizing scene coverage.

When selecting a low-distortion lens, system designers should consider the sensor size, required field of view, working distance, target dimensions, and required measurement accuracy together rather than evaluating distortion as an isolated specification.

For more information about optical distortion, see TOWIN’s Distortion Guide.

8MP Resolution for Detailed Inspection

The lens supports up to 8MP resolution, providing a higher level of image detail for industrial cameras equipped with compatible sensors. Combined with the 2/3″ image format, this configuration is suitable for applications where small features, edges, patterns, or component details need to be resolved clearly.

The 25mm focal length also helps concentrate the available sensor area on a more controlled inspection region. This can be advantageous when the target is positioned at a defined working distance and the system does not require a very wide viewing angle.

For guidance on matching sensors and lenses, refer to the Sensor Guide.

Frequently Asked Questions

Q: What is the distortion of this 25mm M12 lens?
A: The lens has a specified TV distortion of less than 0.1%, making it suitable for applications where maintaining accurate image geometry is important.

Q: Is this an ultra-low distortion lens?
A: Yes. With TV distortion below 0.1%, this lens can be positioned as an ultra-low distortion M12 lens for precision industrial imaging and machine vision applications.

Q: What sensor size does this lens support?
A: The lens is designed for a 2/3″ image format and is suitable for compatible 2/3″ industrial camera sensors.

Q: What is the field of view of the 25mm lens?
A: On a 2/3″ sensor, the lens provides a 25° diagonal, 20° horizontal, and 15° vertical field of view.

Q: Is this lens suitable for machine vision measurement?
A: Yes. Its 8MP resolution and less-than-0.1% TV distortion make it suitable for selected machine vision measurement, dimensional inspection, alignment, and recognition applications.

Q: What is the minimum object distance?
A: The M.O.D. is 0.2m, allowing the lens to be used for relatively close-range industrial inspection applications.

Q: What mount does this low distortion lens use?
A: The lens uses an M12×0.5 mount, providing a compact interface for compatible industrial and embedded vision cameras.

Q: Does IRCF mean this lens is IR corrected?
A: No. IRCF indicates an IR-cut filter within the optical construction and should not be interpreted as an IR-corrected optical design.

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