Low Distortion Lens – S03512308228F

S03512308228F is 3.55mm low-distortion lens with Built-In Filter, F2.8 High-Resolution M12/S-mount wide-angle lens, 95° 12.5MP CCTV HD lens.

3.55mm 12.5MP M12 Low Distortion Wide Angle Lens

This 3.55mm M12 lens is designed for compact high-resolution imaging systems requiring a wide field of view with controlled distortion. With a 1/2.3″ image format, 12.5MP resolution, 95° diagonal FOV, and TV distortion below 0.4%, it is well suited to embedded vision, machine vision, inspection, and other space-constrained imaging applications.

M12 Low Distortion Lens Core Product Highlights

• 12.5MP high resolution: Supports detailed image capture for high-resolution vision systems.
• 95° diagonal FOV: Provides a broad viewing range from a compact 3.55mm focal length.
• <0.4% TV distortion: Helps maintain accurate image geometry for inspection and measurement-oriented applications.
• M12 × 0.5 mount: Suitable for compact camera modules and embedded optical systems.
• 4G2P + IRF construction: Provides a compact optical configuration with an integrated IR filter element.

M12 Low Distortion Lens Applications

Wide-Angle Imaging with Controlled Distortion

The combination of a 3.55mm focal length and 95° diagonal FOV makes this lens suitable when a compact camera needs to cover a relatively large scene without relying on an extreme fisheye design.

Its <0.4% TV distortion is particularly valuable in applications where image geometry needs to remain controlled. Compared with conventional wide-angle optics with higher distortion, this design can help simplify downstream image processing and maintain more consistent object geometry across the image.

For applications where field of view needs to be evaluated against sensor size and working distance, the TOWIN FOV Calculator can be used during lens selection.

High-Resolution Embedded Vision

With 12.5MP resolution and an M12 × 0.5 mount, this lens is suitable for compact imaging systems where both optical performance and mechanical size are important.

The 0.2m M.O.D. also supports relatively close-range imaging requirements, making the lens appropriate for compact inspection cameras, embedded vision modules, smart devices, and space-limited industrial imaging equipment.

For selecting an appropriate sensor and understanding how sensor dimensions interact with lens performance, see the TOWIN Sensor Guide.

Machine Vision and Inspection

The low-distortion optical design makes this lens particularly relevant to machine vision systems that require a relatively wide field of view without introducing significant geometric deformation.

It can be considered for:

• Compact machine vision cameras
• Embedded inspection cameras
• Automated visual inspection modules
• Robotics vision modules
• Smart imaging devices
• Compact industrial cameras
• Object detection and recognition systems
• Close-range inspection systems

Designed for compact machine vision and embedded imaging applications where wide coverage, 12.5MP resolution, and low distortion are required.

For broader industrial inspection requirements, explore TOWIN’s Machine Vision Solution, which covers optical solutions for industrial imaging systems.

Compatible Devices and System Considerations

This M12 lens can be considered for compact camera platforms using an appropriate 1/2.3″ imaging sensor and supporting the specified image circle.

Its 3.55mm focal length and 95° diagonal FOV make it useful for systems where camera size is limited but a broad scene must still be captured. The fixed iris configuration also provides a straightforward optical setup for applications operating under relatively controlled lighting conditions.

When comparing alternative M12 optics, TOWIN’s M12 Lenses category provides additional compact lens options for different focal lengths, fields of view, and application requirements.

For applications where distortion is an important design parameter, the Distortion Guide provides additional technical background for comparing lens characteristics.

Lens Selection Considerations

When integrating this lens into an imaging system, several parameters should be evaluated together rather than selecting the lens based on focal length alone.

Sensor compatibility:
The lens is specified for a 1/2.3″ field of view and supports an image format up to Φ8.0mm. The camera sensor and required image circle should therefore be checked before integration.

Field of view:
The specified FOV is 95° diagonal, 82° horizontal, and 66° vertical for a 1/2.3″ sensor. This makes the lens suitable when broad scene coverage is required within a compact camera configuration.

Distortion:
With TV distortion below 0.4%, the lens is positioned for applications that require substantially controlled geometric distortion while retaining a wide viewing angle.

Working distance:
The 0.2m M.O.D. should be considered when designing close-range imaging systems. Actual object size, sensor resolution, and required field coverage should be evaluated together.

For applications requiring focal-length selection based on sensor and field-of-view requirements, the TOWIN Focal Length Calculator can assist during the initial optical design process.

Frequently Asked Questions

Q: What sensor size is this 3.55mm M12 lens designed for?
A: The specified FOV is based on a 1/2.3″ sensor, with 95° diagonal, 82° horizontal, and 66° vertical FOV.

Q: What is the resolution of this M12 lens?
A: The lens provides a specified resolution of 12.5MP, making it suitable for high-resolution compact imaging systems.

Q: How much distortion does the lens have?
A: The specified TV distortion is less than 0.4%, making it suitable for applications where controlled image geometry is important.

Q: What is the mount specification?
A: The lens uses an M12 × 0.5 mount, a common mechanical interface for compact camera modules and embedded vision systems.

Q: What is the field of view of the 3.55mm lens?
A: With a 1/2.3″ sensor, the lens provides 95° diagonal FOV, 82° horizontal FOV, and 66° vertical FOV.

Q: What is the minimum object distance of this lens?
A: The specified M.O.D. is 0.2m. Actual usable imaging performance depends on the target object, camera sensor, and system configuration for evaluation.

Q: Is this lens suitable for machine vision applications?
A: Yes. Its 12.5MP resolution, wide FOV, M12 mount, and less-than-0.4% TV distortion make it suitable for compact machine vision and embedded inspection applications.

Q: Does the IRF specification mean this is an IR-corrected lens?
A: Not necessarily. IRF denotes that the specified optical structure contains an IR‑related filter element. Users must not treat this as an IR‑corrected optical design unless extra spectral correction specifications apply.

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