Wide Angle Lens – S02513009212IR

S02513009212IR is Wide-angle M12-mount lens with 1/3″ and 1/4″ sensors, featuring 120° diagonal FOV at 1/3″, 320 × 240 resolution, F1.2 aperture.

2.5mm M12 Wide Angle Fixed Focal Lens

This 2.5mm M12 wide angle lens is designed for compact camera modules that require broad scene coverage across both 1/3″ and 1/4″ image formats. With F1.2 aperture, M12×0.5 mounting, fixed iris, and a compact 2G3P optical structure, it provides a practical solution for wide-area monitoring and embedded imaging applications.

Product Highlights at a Glance

• Dual-format compatibility for 1/3″ and 1/4″ camera configurations.
• 120° diagonal FOV on 1/3″ provides broad scene coverage for compact imaging systems.
• 86° diagonal FOV on 1/4″ maintains wide-angle coverage with a smaller image format.
• F1.2 aperture provides a bright optical configuration for compact camera applications.
• M12×0.5 mount and 2G3P construction support integration into space-constrained camera modules.

2.5mm M12 Wide Angle Lens Applications

The main advantage of this lens is its ability to provide different wide-angle coverage depending on the camera sensor format. With a 1/3″ sensor, the specified FOV reaches 120° diagonally, while a 1/4″ sensor produces an 86° diagonal FOV.

This makes the lens useful for compact camera designs where the same basic optical configuration may be integrated with different sensor formats. The < -29% distortion is significant, so the lens should be selected primarily for broad scene coverage rather than geometric accuracy.

Core Application Scenes

• Compact security monitoring — Suitable for small camera modules that need to cover a relatively large area from a fixed position.
• Indoor wide-area observation — The wide FOV can help reduce blind areas in rooms, equipment spaces, and other enclosed environments.
• Embedded camera systems — The M12×0.5 interface supports integration into compact camera housings and OEM assemblies.
• Small equipment monitoring — Suitable for observing equipment or operating areas where a broad perspective is more important than low distortion.
• Compact visual sensing — Can support embedded imaging systems requiring a wide viewing angle from a small optical package.
• OEM/ODM camera modules — The fixed iris and fixed focal configuration provide a straightforward optical solution for customized camera designs.

Designed for compact wide-angle monitoring and embedded imaging applications, this lens provides flexible coverage across both 1/3″ and 1/4″ camera formats.

For more M12 optical options, explore TOWIN’s M12 Lenses. To compare the effect of sensor size on field of view, the FOV Calculator can help evaluate different camera and lens combinations.

Compatible Device Types

• 1/3″ camera modules
• 1/4″ camera modules
• 320 × 240 imaging systems
• Compact security cameras
• Embedded monitoring cameras
• OEM/ODM camera modules
• Small industrial imaging devices
• Wide-area indoor cameras

The FOV varies significantly with sensor format: 120° D / 92° H / 70° V for 1/3″, compared with 86° D / 70° H / 54° V for 1/4″. The camera sensor should therefore be considered when selecting this lens for a specific application.

For more information about sensor matching, see the TOWIN Sensor Guide. The Lens Selection Guide can also help with focal-length and sensor-format selection.

Frequently Asked Questions

Q: What type of lens is this?
A: This is a 2.5mm M12 fixed focal wide angle lens designed for compact camera modules using either 1/3″ or 1/4″ image formats.

Q: What is the FOV on a 1/3″ sensor?
A: With the specified OPT8241 configuration, the FOV is 120° diagonal, 92° horizontal, and 70° vertical.

Q: What is the FOV on a 1/4″ sensor?
A: With the specified MN34906 configuration, the FOV is 86° diagonal, 70° horizontal, and 54° vertical.

Q: Is this lens a fisheye lens?
A: It is not assigned as a primary fisheye lens from the supplied specifications. Although the 1/3″ configuration provides a 120° diagonal FOV, the available data does not establish a dedicated fisheye optical design.

Q: Is this a low distortion lens?
A: No. The specified distortion is < -29%, so it should not be classified or marketed as a low distortion lens.

Q: What does the F1.2 aperture provide?
A: F1.2 provides a relatively bright optical path, which can be useful for compact camera systems operating in indoor or moderate-light environments.

Q: What mounting interface does this lens use?
A: The lens uses an M12×0.5 mount, making it compatible with camera modules and holders designed for this thread specification.

Q: Why does the FOV change between 1/3″ and 1/4″ sensors?
A: A larger sensor captures a larger portion of the image circle. Therefore, with the same 2.5mm focal length, the 1/3″ format produces a wider FOV than the 1/4″ format.

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