CS-Mount Lens – CCL118043MPCS

CCL118043MPCS CCTV CS-mount lens 1/1.8″ 4.3mm wide angle IR corrected lens 6MP IMX178 F2.3 day night fixed Iris

4.3mm CS-Mount 6MP Wide Angle IR Corrected Lens

This 4.3mm CS-mount wide angle lens is designed for 1/1.8″ sensors and delivers 6MP resolution with a 140° diagonal, 97° horizontal, and 76° vertical field of view. With a fixed F2.3 aperture, manual focus, and IR correction, it provides consistent wide-area imaging for professional CCTV and security camera systems.

For applications requiring broad scene coverage without moving to an ultra-short focal length, this lens provides a practical balance between viewing angle, image resolution, and optical performance. Its CS mount also makes it suitable for a wide range of professional surveillance camera platforms.

Product Core Highlights

• 4.3mm Wide Angle Coverage – Provides 97° horizontal FOV and 140° diagonal FOV for broad scene monitoring.
• 6MP High-Resolution Imaging – Supports detailed image capture for modern high-resolution CCTV cameras.
• 1/1.8″ Sensor Compatibility – Optimized for cameras using 1/1.8″ image sensors.
• F2.3 Fixed Aperture – Provides a stable optical configuration for consistent surveillance imaging.
• IR Corrected CS-Mount Design – Supports more consistent focus performance across visible and near-infrared imaging conditions.

CS-Mount Lens Applications

Core Application Scenes

The 4.3mm focal length gives this lens a wide viewing perspective while providing a more controlled image composition than extremely short focal length lenses. With a 97° horizontal FOV, it is particularly suitable for monitoring spaces where both broad coverage and useful scene detail are required.

Typical applications include:

• Retail store surveillance – Cover aisles, entrances, checkout areas, and customer activity zones with a single wide-angle camera.
• Building entrances and lobbies – Capture people approaching doors, reception areas, and surrounding spaces without requiring an extremely wide fisheye-style view.
• Indoor security monitoring – Suitable for offices, corridors, facility rooms, and other areas requiring broad horizontal coverage.
• Small parking and access areas – The 140° diagonal FOV helps cover wider areas from relatively short camera mounting distances.
• Commercial and industrial facilities – Suitable for monitoring production support areas, warehouses, equipment zones, and facility access points.
• Security camera systems – The CS mount makes the lens suitable for integration with professional CCTV camera platforms.

Designed for wide-angle CCTV surveillance applications, this lens is especially useful when the camera needs to monitor a relatively large area while maintaining a 6MP image output.

Compatible Devices

This lens can be integrated into:

• 1/1.8″ 6MP CCTV cameras
• CS-mount security cameras
• Fixed-camera indoor surveillance systems
• Commercial security camera systems
• Wide-angle IP camera platforms with compatible CS interfaces
• Building entrance and access monitoring cameras
• Retail and warehouse surveillance cameras
• Small-area parking and facility monitoring systems

For projects requiring different sensor sizes, focal lengths, or mounting configurations, explore the available CS-Mount Lenses and select a configuration based on your camera sensor and required FOV.

If you are comparing focal lengths for a specific installation distance, the FOV Calculator can help estimate the required field of view before selecting a lens.

Optical Performance for Wide-Area Monitoring

The combination of 4.3mm focal length and 97° horizontal FOV provides broad scene coverage without relying on an extremely short focal length. This makes the lens suitable for installations where a wide viewing angle is important but the application still benefits from a relatively controlled perspective.

The -14% TV distortion indicates visible barrel distortion, so this lens should be selected for applications where wide-area coverage is more important than precision geometric measurement. It should not be positioned as a low-distortion machine vision lens.

The 6MP resolution is also well matched to surveillance applications where image detail is important for monitoring people, entrances, equipment, and general activity across a broad scene.

IR Corrected for Day & Night Surveillance

The IR-corrected optical design helps maintain more consistent imaging when the camera switches between visible-light and near-infrared illumination. This is valuable for surveillance systems that operate continuously under changing lighting conditions.

Why Choose This 4.3mm CS-Mount Lens?

This lens is a strong option when a surveillance system requires a combination of wide-angle coverage, 6MP resolution, 1/1.8″ sensor compatibility, and IR correction. Its 4.3mm focal length occupies a useful position between extremely wide lenses and conventional surveillance focal lengths, making it suitable for indoor and short-to-medium-distance monitoring.

For projects requiring a customized optical configuration, including focal length, sensor format, mount, or optical performance, you can contact TOWIN for lens selection and OEM/ODM optical support.

Frequently Asked Questions

Q: What sensor size is compatible with this 4.3mm CS-mount lens?
A: This lens is designed for 1/1.8″ image sensors and provides a 6MP resolution configuration.

Q: What is the horizontal field of view of this lens?
A: The lens provides a 97° horizontal FOV, with a 140° diagonal FOV and 76° vertical FOV.

Q: Is this a fixed focal length lens?
A: Yes. The focal length is fixed at 4.3mm, making it suitable for surveillance systems that do not require optical zoom.

Q: Is the 4.3mm lens suitable for CCTV cameras?
A: Yes. Its CS mount, 6MP resolution, wide-angle FOV, and IR-corrected design make it suitable for compatible CCTV and security camera systems.

Q: Does this lens have low distortion?
A: No. The specified TV distortion is -14%, so it should not be classified as a low-distortion lens. It is better suited to wide-area surveillance than precision measurement applications.

Q: What applications are suitable for this 4.3mm wide angle lens?
A: Typical applications include retail surveillance, building entrances, indoor security, small parking areas, warehouses, facility monitoring, and other wide-area CCTV installations.

Q: Is this lens suitable for infrared surveillance?
A: Yes. The lens is IR corrected, helping maintain more consistent optical performance when used with visible and near-infrared illumination.

Q: What is the B.F.L. of this lens?
A: The specified B.F.L. is 6.2mm.

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