Fisheye Lens – S5820020F68

S5820020F68 is IP68 waterproof 2-Megapixel Fisheye CCTV Lens with Built-In IR Filter, Φ5.8, F2.0, M12x0.5 mount, 200° diagonal FOV, for security applications.

M12 1.8mm 2MP 200° IP68 F-Theta Fisheye Lens

This 1.8mm M12 F-Theta fisheye lens delivers a 200° diagonal field of view and 193° horizontal coverage with 2MP resolution, F2.0 aperture, and IP68 protection, making it suitable for automotive, outdoor, panoramic, and wide-area imaging systems.

Product Core Highlights

• 200° Ultra-Wide FOV — Captures an exceptionally broad scene with 200° diagonal coverage and 193° horizontal coverage.
• Controlled F-Theta Distortion — F-Theta distortion below 1.18% provides a controlled projection for applications using fisheye image processing.
• IP68 Protection — Provides protection against dust ingress and water immersion for suitably sealed outdoor and vehicle-mounted camera systems.
• F2.0 Aperture — Supports efficient light collection for wide-angle imaging under changing illumination conditions.
• Compact 13.0mm TTL — Enables integration into compact M12 camera modules.
• 4G2P + IRCF Optical Structure — Combines glass and plastic optical elements with an IR cut filter configuration for visible-light imaging.

M12 1.8mm 200° Fisheye Lens Applications

Core Application Scenes

This lens combines an extreme 200° field of view with controlled F-Theta distortion, making it different from conventional high-distortion fisheye lenses. Its IP68 protection further extends its use toward outdoor and vehicle-mounted imaging where wide scene coverage and environmental resistance are both important.

• Automotive Surround-View Imaging — The 200° diagonal and 193° horizontal FOV provide extensive scene coverage for selected vehicle-mounted camera configurations, helping capture areas around the vehicle with a compact optical system.
• Outdoor Vehicle Monitoring — IP68 protection makes the lens suitable for camera systems exposed to rain, dust, splash, and temporary water immersion when the complete camera assembly is properly sealed.
• Panoramic Imaging — The extreme FOV allows a camera to acquire a very broad scene from a single optical position, while the controlled F-Theta projection can be useful for downstream image correction and panoramic processing.
• Outdoor Security Monitoring — The combination of wide coverage and IP68 protection makes the lens suitable for outdoor monitoring systems where a fixed camera needs to observe a large area.
• Robotics Vision — The wide perspective can provide robots and mobile platforms with extensive environmental information for navigation, obstacle awareness, and surrounding-scene analysis.
• Industrial Outdoor Monitoring — The IP68 construction can support camera modules installed in exposed industrial environments where dust and water resistance are required.
• Compact Wide-Area Vision — With a 13.0mm TTL and M12x0.5 mount, the lens is suitable for compact camera modules that require extreme angular coverage without a large optical assembly.

For automotive and environmentally protected applications, the Waterproof Automotive Lens category provides additional IP-rated lens options.

For other compact ultra-wide optical configurations, the M12 Lenses range provides additional M12 lens solutions.

When evaluating this lens, it is important to distinguish F-Theta distortion from conventional TV distortion. The Distortion Guide can help engineers understand how different optical projection models affect image geometry and correction.

Compatible Device List

• Automotive camera modules
• Vehicle-mounted surround-view cameras
• Outdoor monitoring cameras
• IP68-rated camera modules
• Panoramic camera systems
• Wide-area security cameras
• Robotics vision cameras
• Mobile robotic platforms
• Industrial outdoor cameras
• Embedded M12 vision modules
• Compact panoramic imaging systems

Designed for IP-protected automotive, outdoor panoramic, and ultra-wide environmental imaging applications.

Frequently Asked Questions

Q: What is the field of view of this 1.8mm M12 lens?
A: The lens provides a 200° diagonal, 193° horizontal, and 109° vertical field of view according to the supplied specification.

Q: Is this lens a fisheye lens?
A: Yes. Its 200° diagonal FOV and 193° horizontal FOV place it firmly in the ultra-wide fisheye category. The F-Theta optical design provides a controlled projection specifically suited to this type of wide-angle imaging.

Q: Why is the F-Theta distortion only <1.18% despite the 200° FOV?
A: F‑Theta distortion differs from standard TV distortion in describing optical projection. Low F‑Theta distortion does not equal rectilinear low‑distortion imaging. This lens adopts F‑Theta projection for ultra‑wide angle coverage.

Q: Is this lens a Low Distortion Lens?
A: It should not be classified as a conventional Low Distortion Lens. Despite the <1.18% F-Theta distortion specification, the 200° FOV and F-Theta projection identify it as an ultra-wide fisheye lens.

Q: What does the IP68 rating mean?
A: IP68 offers dust‑proof protection and resistance to water immersion under defined test conditions. Full camera assembly requires proper sealing to achieve identical environmental‑protection performance.

Q: Can this lens be used for automotive applications?
A: Yes. Under TOWIN product classification, the IP68 waterproof design qualifies this lens as an Automotive Lens. With 200° FOV, it fits selected surround-view and vehicle imaging setups.

Q: What is the advantage of the 193° horizontal FOV?
A: Its 193° horizontal FOV delivers ultra‑wide coverage from one installation point, ideal for surround‑view, panoramic, outdoor monitoring and environmental perception systems.

Q: Does IRCF mean the lens is IR corrected?
A: No. IRCF indicates an IR cut filter configuration for visible-light imaging. It should not be interpreted as an IR-corrected optical design. For applications requiring visible/NIR focus consistency, a dedicated IR Corrected Lens should be evaluated.

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