12MP 25mm C-Mount Machine Vision Lens for 4/3-Inch Cameras

Key Features of the 25mm Machine Vision Lens

• 12MP optical resolution: Designed for detailed imaging with high-resolution industrial cameras.
• Up to 4/3-inch sensor coverage: The 23 mm image circle supports large-format machine vision sensors while remaining compatible with smaller 1-inch and 1/2-inch sensors.
• Low-distortion imaging: Professional optical design helps maintain more accurate image geometry across the field of view.
• Multi-layer optical coating: Improves light transmission and helps reduce stray light in industrial imaging environments.
• Manual focus and iris: Allows the installer to balance exposure, depth of field and image sharpness for the application.
• Industrial mechanical stability: Designed to resist vibration and impact during continuous machine operation.

Technical Specifications

Sensor Compatibility and Field Angle

The PMS-LFHHG-2512M(B) is designed to cover cameras with sensor formats up to 4/3 inch. It can also be used with smaller sensor formats when the camera interface and required field of view are suitable.

The actual field of view depends on the camera sensor dimensions, working distance, focusing position and mechanical installation. Confirm the required horizontal and vertical field of view before final lens selection.

Low Distortion for Industrial Inspection

Low optical distortion is important when a machine vision system is used for edge detection, component positioning, shape inspection or dimensional analysis. The specified distortion values of this 25mm FA lens are:

• 4/3-inch sensor: -0.64% at y=11.5 mm
• 1-inch sensor: -0.48% at y=8.0 mm
• 1/2-inch sensor: -0.15% at y=4.0 mm

Software calibration may still be required when the application has strict dimensional accuracy or edge-position requirements. For measurement tasks in which object size must remain stable despite height variation, a telecentric lens should be evaluated instead.

Recommended Machine Vision Applications

• PCB, electronic component and connector inspection
• AOI and automated surface-defect inspection
• Component presence, orientation and positioning
• Barcode, character and marking recognition
• Precision hardware and machined-part inspection
• Robot guidance and automated pick-and-place systems
• Battery, semiconductor and assembly-line inspection
• General industrial imaging with 4/3-inch or smaller cameras

How to Select the Correct Focal Length

A 25mm machine vision lens provides a balanced field of view for many medium-distance inspection systems. Under the same camera sensor and working distance, a shorter focal length such as 12mm or 16mm provides a wider field of view. A longer focal length such as 35mm or 50mm provides a narrower field of view and a larger image of the target.

The correct choice should be based on the required field of view, available working distance, camera sensor size and the smallest defect or feature that must be detected.

When This Lens May Not Be the Best Choice

• Applications requiring constant magnification when object height changes should use a telecentric lens.
• Applications with a focusing distance shorter than 0.15 m require a different optical configuration.
• Sensors larger than 4/3 inch require a lens with a larger image circle.
• Systems requiring motorized focus, autofocus or automatic iris control require another lens type.
• Extreme ultraviolet, SWIR or specialized spectral imaging applications require wavelength-specific optical verification.

Information Required for Lens Selection

To confirm whether the PMS-LFHHG-2512M(B) is suitable for your machine vision project, please provide:

1. Industrial camera model and sensor size
2. Camera resolution and pixel size
3. Required horizontal and vertical field of view
4. Available working distance
5. Smallest defect or feature to be detected
6. Inspection speed and exposure requirements
7. Lighting type and object surface material
8. Required dimensional or positioning accuracy

Frequently Asked Questions

Request a Machine Vision Lens Recommendation

Send POMEAS your camera model, sensor size, required field of view, working distance and inspection accuracy. Our optical team will help evaluate the 25mm C-mount lens and recommend a suitable camera, lens and lighting configuration for your application.