Fisheye Lens – S5318620F

S5318620F is Fisheye 3-Megapixel M12 CCTV lens with Built-In IR Filter, 186° FOV, F2.0 aperture, IP69K waterproof rating for security surveillance.

1.6mm M12 Automotive Fisheye Lens

This 1.6mm M12 automotive fisheye lens is designed for vehicle imaging systems that require an extremely wide field of view and reliable environmental protection. With up to 186° diagonal and horizontal FOV, 162° vertical FOV, 3MP resolution, and IP69K protection, it is well suited for surround-view, parking assistance, vehicle monitoring, and other wide-area automotive vision applications.

M12 Fisheye Lens Highlights

• 186° ultra-wide FOV captures an exceptionally broad surrounding scene.
• 1.6mm fisheye design provides extensive coverage from a compact camera position.
• 3MP resolution supports detailed vehicle imaging and monitoring.
• M12x0.5 mount is suitable for compact embedded camera modules.
• IP69K protection supports demanding automotive environments exposed to water, dust, and high-pressure cleaning.

1.6mm 186° M12 Fisheye Lens Applications

Core Automotive Applications

With an extremely wide 186° diagonal and horizontal field of view, this lens is designed for automotive systems where maximizing surrounding-area coverage is a primary requirement. The 1.6mm focal length allows a single compact camera module to capture a very broad scene around the vehicle.

Designed for automotive fisheye imaging applications, this lens can be considered for:

• Automotive surround-view camera systems
• Parking assistance cameras
• Vehicle perimeter monitoring
• Front-view wide-area cameras
• Rear-view and reverse-assistance systems
• Side-view vehicle cameras
• Commercial vehicle monitoring
• Bus and truck camera systems
• Vehicle-mounted recording systems
• Embedded automotive vision modules

The 162° vertical FOV also provides substantial vertical scene coverage, which can be useful when the camera installation position requires both nearby ground areas and objects around the vehicle to remain within the captured image.

For vehicle perception projects, the lens can be evaluated alongside TOWIN’s ADAS Lens Solutions.

Compatible Devices

This lens can be integrated with compatible:

• 1/2.42″ ISX031 camera modules
• 3MP automotive cameras
• M12 automotive camera modules
• Surround-view camera systems
• Parking cameras
• Vehicle monitoring cameras
• Commercial vehicle camera systems
• Embedded automotive vision devices
• Outdoor vehicle-mounted cameras

The M12x0.5 mount provides a compact mechanical interface for embedded camera designs. During integration, engineers should verify sensor position, lens-to-sensor distance, housing dimensions, optical axis alignment, and available installation space.

Fisheye Optical Design

The 186°D / 186°H / 162°V FOV clearly positions this lens as an ultra-wide fisheye optical solution. Unlike conventional rectilinear wide-angle lenses, a fisheye lens is designed to capture a much larger angular range within a compact image area.

The specified F-θ distortion of less than -7.9% should be interpreted according to the F-θ optical model rather than compared directly with the barrel or pincushion distortion values of conventional rectilinear lenses.

For automotive applications, system designers can apply calibration and dewarping algorithms to fisheye images whenever the final system demands a more natural perspective. The optical design therefore works together with the camera ISP and image-processing system.

When selecting an automotive fisheye lens, field of view, sensor format, installation position, image circle, and required output projection should be evaluated together. TOWIN’s Lens Selection Guide provides additional information for evaluating these factors.

High-Protection Automotive Imaging

The IP69K waterproof specification makes this lens particularly suitable for vehicle-mounted environments where the camera may be exposed to water, dust, and high-pressure cleaning conditions.

The lens features a 6G + IRCF optical structure for compact, high‑performance imaging setups, and its F2.0 aperture delivers a practical balance between light‑gathering performance and optical design constraints.

The final environmental protection of an automotive camera system still depends on the complete assembly. System designers shall tailor housing construction, seals, connectors, cable interfaces, and installation method to meet required system‑level protection.

Wide-Area Vehicle Perception

A conventional narrow-angle lens captures a relatively limited portion of the environment, while this 1.6mm fisheye lens is designed to maximize angular coverage.

This makes it particularly useful when the primary requirement is to monitor a large area around a vehicle rather than obtain a narrow, highly magnified view of a distant object. It can therefore complement other vehicle cameras in systems that combine different focal lengths and viewing angles.

For additional information about automotive and machine vision applications, see TOWIN’s Knowledge Center.

Frequently Asked Questions

Q: What is the field of view of this 1.6mm automotive fisheye lens?
A: With the 1/2.42″ ISX031 sensor, the lens provides approximately 186° diagonal, 186° horizontal, and 162° vertical FOV.

Q: Is this lens a fisheye lens?
A: Yes. Its 1.6 mm focal length and extremely‑wide 186° field of view target fisheye imaging applications, especially use cases that demand very broad environmental coverage.

Q: What sensor is this lens designed for?
A: The specified FOV is measured with the 1/2.42″ ISX031 sensor, and the lens supports a maximum image format of Φ5.3mm.

Q: Is this lens suitable for automotive applications?
A: Yes. Its ultra-wide fisheye field of view, compact M12x0.5 mount, 3MP resolution, and IP69K protection make it suitable for a variety of vehicle-mounted imaging applications.

Q: What is the advantage of a 186° field of view?
A: A 186° FOV allows the camera to capture an exceptionally broad surrounding scene from a single compact camera position, which is useful for surround-view, parking assistance, and vehicle perimeter monitoring.

Q: Does the -7.9% F-θ distortion mean this is a low distortion lens?
A: Not in the conventional low-distortion lens sense. This lens adopts a fisheye/F‑θ optical design, so users must not directly compare its F‑θ distortion specification against distortion values from conventional rectilinear lenses.

Q: Is the lens waterproof?
A: The lens is specified with an IP69K waterproof rating. The final protection level of the complete camera system depends on the housing, seals, connectors, and overall assembly.

Q: Can this lens be used for ADAS or vehicle perception?
A: It fits select ADAS and vehicle‑perception systems requiring ultra‑wide environmental coverage. Final suitability depends on camera placement, required FOV, image‑processing architecture and system‑level requirements.

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