Low Distortion Lens – C154523020M3

C154523020M3 is Low-distortion manual C-Mount 3-Megapixel lens with a 15~45mm focal length, F2.0 aperture, and a 38~13° diagonal field of view.

C-Mount 15-45mm 3MP Low Distortion Vari-Focal Lens

This 15-45mm C-Mount low distortion lens is designed for 2/3″ imaging sensors requiring flexible focal length adjustment and controlled geometric distortion. With 3MP resolution, F2.0 aperture, and distortion as low as -0.04%, it provides a versatile optical solution for industrial inspection, machine vision, and adjustable-view imaging systems.

For engineers selecting an industrial lens according to sensor size, focal length, and working distance, the Lens Selection Guide provides additional optical selection information.

Product Core Highlights

• 15–45mm Vari-Focal Range: Adjusts viewing magnification without replacing the lens.
• Low Distortion Imaging: Distortion ranges from only -0.29% to -0.04%.
• 2/3″ Sensor Coverage: Designed for compatible industrial imaging sensors.
• F2.0 Aperture: Provides a relatively bright optical configuration for industrial imaging.
• Manual Iris & Focus: Enables optical adjustment for different inspection conditions.

C-Mount 15-45mm Low Distortion Lens Applications

Core Application Scenes

This C-Mount 15-45mm vari-focal lens is designed for industrial imaging systems where the required field of view may change between different inspection tasks. Its adjustable focal length allows engineers to move from a wider 38° diagonal field of view at 15mm toward a narrower 13° field of view at 45mm without replacing the lens, making it useful for inspection platforms that need optical flexibility.

The lens is particularly suitable for machine vision inspection stations where the camera-to-object distance is relatively fixed but different products or inspection areas require different image magnifications. The low distortion specification, ranging from -0.29% to -0.04%, helps maintain consistent object geometry across the imaging area, which is valuable when visual inspection involves dimensional features, positioning, alignment, or shape recognition.

The 0.2m minimum object distance also supports relatively close-range industrial imaging. Combined with manual focus and manual iris adjustment, the lens can be configured during machine setup according to the working distance, illumination level, and required image composition.

For applications where focal length and working distance need to be evaluated before selecting an optical system, engineers can use the Focal Length Calculator to estimate the required focal length for a target field of view.

Compatible Device List

• Industrial Inspection Cameras: Compatible with 2/3″ sensor-based C-Mount cameras used for dimensional inspection, positioning, and defect detection.
• Machine Vision Systems: The 15–45mm focal range allows a single camera configuration to accommodate different magnification requirements during inspection.
• Factory Automation Equipment: Manual iris and focus adjustment allows the optical system to be configured during machine installation and commissioning.
• Precision Inspection Stations: Low distortion performance is suitable for applications where image geometry needs to remain controlled across the inspection field.
• OEM Vision Systems: The standard C-Mount interface simplifies integration with industrial cameras and customized imaging equipment.

For complete application information, explore TOWIN’s Machine Vision solutions, which cover optical systems for industrial inspection and automated imaging.

Designed for industrial machine vision, factory automation, and adjustable-magnification inspection applications.

Frequently Asked Questions

Q: What sensor size is this C-Mount lens designed for?
A: This lens is designed for 2/3″ image formats and is suitable for compatible industrial cameras using C-Mount interfaces.

Q: What is the focal length range of this lens?
A: The lens provides a 15–45mm vari-focal range, allowing users to adjust the field of view and image magnification according to the inspection requirement.

Q: Is this a low distortion lens?
A: Yes. The specified distortion ranges from -0.29% to -0.04%, providing controlled geometric distortion for industrial imaging applications.

Q: What is the field of view of the 15–45mm lens?
A: On the specified 2/3″ image format, the diagonal FOV ranges from 38° at the 15mm setting to 13° at 45mm. The horizontal FOV ranges from 30.5° to 11°, while the vertical FOV ranges from 23° to 8°.

Q: Is the focal length fixed or adjustable?
A: It is a vari-focal lens. The focal length can be manually adjusted from 15mm to 45mm.

Q: Does this C-Mount lens have manual focus?
A: Yes. Both the iris and focus are manually adjustable, allowing users to configure the lens according to the camera installation distance and lighting conditions.

Q: What is the minimum object distance of this lens?
A: The specified minimum object distance is 0.2m, making the lens suitable for relatively close-range industrial inspection setups.

Q: Can this lens be used for machine vision inspection?
A: Yes. Its 2/3″ C-Mount design, 3MP resolution, 15–45mm focal range, F2.0 aperture, and low distortion make it suitable for a variety of machine vision and industrial inspection applications.

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