Wide Angle Lens – S03212910118F

S03212910118F is 3.2mm CCTV wide angle lens with Built-In Filter, 1/2.9″ M12 mount lens, F1.8 aperture, 2-Megapixel Low Light Sensitive lens.

3.2mm M12 Wide Angle Lens for IMX323

This 3.2mm M12 wide angle lens is designed for compact imaging systems using the 1/2.9″ IMX323 sensor. With a 123° diagonal field of view, 101° horizontal FOV, and 53° vertical FOV, it provides broad scene coverage while maintaining a compact M12×0.5 optical interface.

The lens combines a 3.2mm fixed focal length, F1.8 aperture, 0.1m minimum object distance, and 4.5mm back focal length, making it particularly suitable for close-range and space-constrained imaging applications. Its 1G3P+IRCF optical structure is designed for compact camera module integration where wide viewing coverage and practical optical performance are required.

This lens is a suitable option for embedded cameras, smart security equipment, robotics vision, industrial monitoring, and other compact imaging devices. It can also be evaluated with TOWIN’s range of M12 Lenses for applications requiring different focal lengths and fields of view.

M12 Wide Angle Lens Core Highlights

• 123° Wide Field of View — Provides broad scene coverage from a compact 3.2mm fixed focal length design.
• Designed for IMX323 — Optimized for use with the 1/2.9″ IMX323 sensor for compact 2MP camera applications.
• 0.1m Minimum Object Distance — Supports close-range imaging where the camera needs to capture subjects at short distances.
• F1.8 Fixed Aperture — Provides a useful balance between light-gathering capability, optical size, and imaging stability.
• Compact M12×0.5 Mount — Well suited to embedded camera modules and small-format imaging equipment.

M12 Wide Angle Lens Applications

Core Application Scenes

The combination of a 3.2mm focal length, 123° diagonal FOV, 0.1m minimum object distance, and compact M12 mount makes this lens particularly useful for applications where the camera must observe a relatively large area from a short installation distance.

Typical applications include:

• Indoor security and surveillance cameras
• Compact IP camera modules
• Embedded vision systems
• Robotics and mobile robot cameras
• Industrial equipment monitoring
• Short-range machine vision
• Smart home and IoT cameras
• Access and presence monitoring
• Indoor environment monitoring
• Compact edge-AI camera devices

Designed for close-range wide-angle imaging applications, this lens is especially useful when the camera has limited installation space and needs to capture a broad scene without using a larger C-mount optical assembly.

For system-level applications, the lens can be considered for TOWIN’s Smart Security, Robotics Vision, and Machine Vision solutions.

Compatible Device Types

This M12 lens can be integrated into:

• IMX323-based camera modules
• 1/2.9″ CMOS camera systems
• Compact security cameras
• Embedded vision cameras
• Robotics cameras
• Industrial monitoring cameras
• IoT imaging devices
• Edge-AI vision modules
• Small-format machine vision equipment
• Short-range inspection cameras

The M12×0.5 mounting interface supports compact optical integration and can be incorporated into customized camera housings where installation space is limited.

Close-Range Imaging Performance

One of the key advantages of this lens is its 0.1m minimum object distance. Compared with lenses designed primarily for longer working distances, this specification allows the camera to be positioned closer to the target while still maintaining a practical imaging configuration.

This makes the lens suitable for applications such as equipment monitoring, indoor security, compact robotic systems, and short-range detection where the camera may need to be installed close to the subject.

The 123° diagonal field of view also helps reduce blind areas when the camera is positioned in confined spaces. The 101° horizontal FOV provides particularly broad horizontal coverage for monitoring and embedded vision applications.

Optical Design Considerations

The specified TV distortion of less than -19% is consistent with a wide-angle optical design. The lens prioritizes broad scene coverage while maintaining a more controlled distortion level than many extremely wide-angle lens designs.

For applications where image geometry is important, engineers should evaluate distortion together with the required field of view, sensor size, installation distance, and image-processing capabilities. TOWIN’s Distortion Guide provides additional information for comparing distortion characteristics between different lens designs.

The F1.8 aperture provides a practical balance between light transmission and compact optical construction. Actual low-light performance will also depend on the IMX323 sensor, exposure configuration, illumination, and image-processing system.

When selecting a lens for a specific sensor and field of view, the Sensor Guide and Lens Selection Guide can be used as additional optical design references.

Frequently Asked Questions

Q: What sensor is this 3.2mm M12 lens designed for?

A: This lens is specified for the 1/2.9″ IMX323 sensor and provides 2MP imaging performance. Final compatibility should be verified against the actual camera module and sensor configuration.

Q: What is the field of view of this lens?

A: The lens provides a 123° diagonal field of view, 101° horizontal field of view, and 53° vertical field of view when used with the specified IMX323 configuration.

Q: Is this a wide angle lens?

A: Yes. Its 3.2mm focal length and 123° diagonal FOV make it a wide angle M12 lens designed for broad scene coverage in compact imaging systems.

Q: What is the minimum object distance?

A: The specified minimum object distance is 0.1m, making this lens suitable for close-range imaging applications where the camera is installed relatively close to the target.

Q: Is this lens suitable for security cameras?

A: Yes. Its wide field of view, compact M12×0.5 mount, 2MP resolution, and 0.1m minimum object distance make it suitable for selected indoor security and compact surveillance camera applications.

Q: Can this lens be used for machine vision?

A: Yes. It fits machine vision and embedded vision use cases prioritizing wide coverage and near-field imaging over minimal geometric distortion.

Q: Does this lens provide low distortion?

A: The specified TV distortion is below -19%. Although this is a controlled distortion level for a wide-angle lens, the product should not be positioned as a dedicated low-distortion lens.

Q: Can TOWIN customize this M12 lens for an OEM project?

A: TOWIN supports OEM/ODM optical development for customized imaging projects. Project development includes evaluation of sensor format, field of view, focal length, mechanical dimensions, mount, working distance, and environmental conditions.

Related Optical Resources

Selecting the correct wide-angle lens requires balancing focal length, sensor format, field of view, distortion, and installation distance. TOWIN’s Lens Basics provides foundational information for understanding these optical parameters.

For projects that require a specific field of view, the FOV Calculator can help estimate the required coverage based on sensor and installation parameters. The Focal Length Calculator can also be used to estimate focal length requirements during preliminary lens selection.

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