C-Mount Lens – C167011714A8

C167011714A8 is a 16-70mm C-Mount IR-corrected lens.   It is long focal lenght for 8-12 megapixel 1/1.7″ sensors like IMX324, IMX226.  It has a large aperture F1.4 auto iris for low light sensitive road IP camera.

Product Overview

This 16–70mm C-Mount IR-corrected lens is designed for high-resolution surveillance and long-range imaging systems that require flexible focal length control, strong low-light performance, and consistent image quality. Supporting a 1/1.7″ image format and 8MP resolution, the lens provides a horizontal field of view from 26° to 6°, allowing users to switch between relatively wide-area observation and narrow-angle long-distance monitoring. Its bright F1.4 aperture supports strong light transmission, while the DC auto iris helps regulate exposure under changing lighting conditions. The manual zoom and focus configuration provides precise optical adjustment during system installation. With IR-corrected optics, the lens is suitable for imaging systems operating across visible and near-infrared wavelengths. Designed for long-range security and intelligent traffic monitoring applications, this C-Mount lens is particularly suitable for CCTV, ANPR, smart traffic, perimeter surveillance, and industrial monitoring systems.

For additional C-Mount solutions, explore TOWIN’s C Mount Lenses.

C-Mount IR-Corrected Lens Advantages

16–70mm Manual Varifocal Range
The 16–70mm focal length range provides substantial flexibility for surveillance applications. Users can select a wider 16mm view for area monitoring or move toward 70mm for narrower-angle observation and distant subjects.

8MP High-Resolution Performance
The 8MP optical design supports high-definition imaging for modern IP cameras and intelligent vision systems where detailed object information is important.

Bright F1.4 Aperture
The F1.4 aperture provides high light-gathering capability, helping the lens maintain image brightness in low-light environments and supporting demanding surveillance applications.

DC Auto Iris
The DC auto iris automatically adjusts the lens aperture according to changing illumination conditions, helping maintain more consistent exposure when lighting conditions vary.

IR-Corrected Optical Design
IR correction helps reduce focus variation between visible and near-infrared wavelengths, making the lens suitable for day/night surveillance systems using infrared illumination.

Manual Zoom and Focus
Manual zoom and focus allow installers to precisely configure the lens according to the camera position, target distance, and required field of view.

C-Mount Compatibility
The C-Mount interface makes the lens suitable for professional camera systems, industrial imaging equipment, surveillance cameras, and other applications requiring a larger optical format and flexible lens integration.

C-Mount IR-Corrected Lens Applications

CCTV & Long-Range Surveillance
The 16–70mm focal length range allows surveillance operators and system designers to balance coverage and target magnification according to the installation environment. The 70mm telephoto end is particularly useful for distant subjects.

Explore TOWIN’s C Mount Lenses for additional professional imaging options.

Smart Traffic & ANPR Systems
The variable focal length, 8MP resolution, F1.4 aperture, and IR-corrected optical design make this lens suitable for intelligent transportation systems, vehicle monitoring, and license plate recognition applications where camera-to-target distance can vary.

For application-specific optical solutions, see TOWIN’s Smart Traffic Solutions.

Perimeter Security
The longer focal length range can help security systems monitor gates, entrances, fences, roads, industrial facilities, and other areas where distant targets need to be captured in detail.

For broader security applications, explore Smart Security Solutions.

Industrial Monitoring
The 8MP resolution and flexible 16–70mm focal length make the lens suitable for monitoring production areas, equipment, access points, and other industrial environments requiring adjustable viewing distances.

For industrial imaging applications, visit TOWIN’s Machine Vision Solutions.

Day & Night Imaging
The IR-corrected optical configuration and DC auto iris make this lens suitable for surveillance systems that operate continuously across changing daytime and nighttime lighting conditions.

Lens Selection & Technical Considerations

Focal Length and Field of View
The 16–70mm focal length range provides an H F.O.V. of approximately 26° to 6°. At the 16mm end, the lens provides broader scene coverage, while the 70mm end produces a much narrower viewing angle suitable for distant subjects.

When determining the appropriate focal length for a surveillance installation, consider the camera-to-target distance, sensor dimensions, target size, and required horizontal field of view. TOWIN’s FOV Calculator can help evaluate these parameters.

Sensor Compatibility
The lens is designed for a 1/1.7″ image format and supports 8MP resolution. The camera sensor should be checked against the lens image format during system design to ensure complete image coverage.

For more information about sensor and lens matching, see TOWIN’s Sensor Guide.

F1.4 Aperture for Low-Light Imaging
The F1.4 maximum aperture provides strong light transmission, which can be particularly valuable for nighttime surveillance, shaded environments, and applications where maintaining image brightness is important.

The actual low-light performance will also depend on sensor sensitivity, exposure settings, infrared illumination, and camera image processing.

IR-Corrected Performance
The IR-corrected optical configuration helps maintain more consistent focus when the imaging system transitions between visible light and near-infrared wavelengths. This is useful for day/night surveillance systems equipped with infrared illumination.

Manual Zoom and Focus
The manual zoom design allows installers to select the appropriate focal length during system setup, while manual focus enables precise focusing at the selected focal length and target distance.

For lens selection guidance, visit TOWIN’s Lens Selection Guide.

Minimum Object Distance
The 1.5m M.O.D. indicates that the lens is intended for medium- to long-distance imaging rather than very close-range inspection. The actual usable working distance should be determined according to the required target size and camera configuration.

Frequently Asked Questions

Q: What applications is this 16–70mm C-Mount IR-corrected lens suitable for?
A: This lens is suitable for long-range CCTV, perimeter surveillance, smart traffic monitoring, ANPR systems, industrial monitoring, and day/night security cameras requiring flexible focal length adjustment.

Q: What is the focal length range of this lens?
A: The lens provides a manual 16–70mm focal length range. The 16mm setting provides a wider viewing angle, while the 70mm setting provides a narrower view for distant subjects.

Q: What is the field of view of this lens?
A: The horizontal field of view ranges from approximately 26° at the wide end to 6° at the telephoto end. The exact field of view depends on the camera sensor configuration.

Q: Is this lens suitable for long-distance surveillance?
A: Yes. The 16–70mm focal length range provides substantial telephoto capability, with the 70mm end particularly suitable for capturing distant subjects and narrowing the viewing area.

Q: Does this lens support day and night imaging?
A: Yes. The IR-corrected optical design helps maintain focus consistency across visible and near-infrared wavelengths, making the lens suitable for day/night surveillance systems with IR illumination.

Q: What does DC Auto Iris mean?
A: DC Auto Iris allows the camera system to control the lens aperture according to changes in scene brightness. This helps maintain more consistent exposure when lighting conditions vary.

Q: Can TOWIN customize this C-Mount varifocal lens?
A: TOWIN supports OEM and ODM optical development for surveillance and industrial imaging projects. Requirements such as focal length range, sensor format, resolution, IR performance, aperture, mechanical dimensions, and other optical specifications can be evaluated according to the application. Contact TOWIN for engineering support.

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