

1.0mm M12 5MP fisheye lens with 209° FOV on IMX662, F2.0 aperture, M12 × 0.5 mount, 0.2m M.O.D., and compact 24.26mm TTL for ultra-wide embedded vision.
S3421020 is M12 Fisheye 5-Megapixel lens, featuring a 209° field of view, F2.0 aperture,< – 2.9% F – θ distortion, with a minimum object distance of 0.2m.
| IMAGE FORMAT | Max Φ3.4mm |
| FOCAL LENGTH | 1.0mm |
| F.O.V.(IMX662) | 209°(D=6.39) |
| 209°(H=5.57) | |
| 194°(V=3.13) | |
| RESOLUTION | 5 MP |
| F-θ DISTORTION | <-2.9% |
| APERTURE | F2.0 |
| MOUNT | M12x0.5 |
| IRIS | Fixed |
| M.O.D. | 0.2m |
| T.T.L. | 24.26mm |
| STRUCTURE | Without IRCF |
This 1.0mm M12 5MP fisheye lens is designed for ultra-wide-angle imaging applications requiring an exceptionally large field of view. Featuring a 209° diagonal FOV with an IMX662 sensor, F2.0 aperture, and compact M12 × 0.5 mount, it provides high-resolution panoramic imaging for embedded vision, robotics, surveillance, and spatial-awareness systems.
This 1.0mm M12 fisheye lens is designed for vision systems where maximizing scene coverage is more important than maintaining a conventional rectilinear perspective. Its 209° field of view allows a single camera to observe an exceptionally large area, making it suitable for panoramic perception, close-range spatial awareness, and compact surround-view imaging.
The combination of a 1.0mm focal length and M12 × 0.5 mount makes this lens particularly useful in applications where camera size must remain small while the optical system needs to capture a very broad scene. The 5MP resolution also provides more image detail for downstream computer vision and AI-based image analysis.
For robotics, this fisheye configuration can provide a broad visual context around a mobile platform, helping embedded vision systems observe obstacles, nearby objects, and surrounding areas without requiring multiple conventional cameras. It can also be integrated into compact security devices where a single camera needs to monitor a large indoor or outdoor area.
The lens can be evaluated alongside Towin’s M12 Lens solutions when developing compact embedded camera modules.
Designed for ultra-wide panoramic vision, robotics perception, and compact spatial-awareness applications.
The defining feature of this lens is its 209° diagonal and horizontal FOV, combined with a 194° vertical FOV when paired with the specified IMX662 sensor. This makes it substantially different from conventional wide-angle lenses and places it firmly in the fisheye lens category.
The 1.0mm focal length allows the lens to capture an extremely large scene from a short optical assembly. This is particularly valuable when a camera enclosure has limited installation space but the imaging system still requires extensive environmental coverage.
The lens uses a fixed F2.0 aperture and fixed iris, providing a consistent optical configuration for embedded camera designs. Its 0.2m M.O.D. also supports relatively close-range imaging, which can be useful for compact robotics, indoor monitoring, and near-field spatial perception.
Engineers working with ultra-wide-angle systems can use the FOV Calculator to evaluate the relationship between sensor format, focal length, and image coverage.
Because the lens uses an M12 × 0.5 mount, it can be considered together with other products in the M12 Lenses range when comparing compact lens configurations.
When selecting a fisheye lens, the field of view is only one consideration. Sensor compatibility, image circle, optical distortion characteristics, working distance, and the intended image-processing method should also be evaluated.
This lens is specified with an IMX662 FOV configuration, so the actual imaging result depends on the selected sensor and camera architecture. The maximum image format is Φ3.4mm, which should also be checked against the camera sensor’s active imaging area during system integration.
For engineers comparing different fisheye configurations, Towin’s Distortion Guide provides additional information about distortion characteristics and their effect on captured images.
The Sensor Guide can also be used when checking sensor and optical-format compatibility before selecting the final lens configuration.
Q: Is this a fisheye lens?
A: Yes. With a 209° diagonal FOV, 209° horizontal FOV, and 194° vertical FOV on the specified IMX662 sensor, this lens is designed as an ultra-wide fisheye lens.
Q: What sensor is this 1.0mm lens designed for?
A: The specified FOV data is based on the Sony IMX662 sensor. The maximum image format is Φ3.4mm, so the sensor’s active image area should be checked during system integration.
Q: What is the field of view of this M12 fisheye lens?
A: With the specified IMX662 configuration, the FOV is 209° diagonal, 209° horizontal, and 194° vertical.
Q: What is the focal length of this fisheye lens?
A: The lens has an ultra-short 1.0mm fixed focal length, which enables extremely wide scene coverage.
Q: Is this lens suitable for robotics vision?
A: Yes. Its extremely wide FOV can provide broad environmental awareness for compact mobile robots, robotic platforms, and embedded perception systems.
Q: What mount does this fisheye lens use?
A: It uses an M12 × 0.5 mount, a compact mounting interface commonly used for embedded camera modules and miniature vision systems.
Q: Does this lens have a fixed aperture?
A: Yes. The lens uses a fixed F2.0 aperture and fixed iris configuration.
Q: Does the lens include an IRCF?
A: No. The specification states Without IRCF, so an appropriate IR-cut filter or filtering solution should be evaluated separately according to the camera system.
For system designers evaluating compact fisheye and ultra-wide-angle imaging solutions, the Lens Basics section provides fundamental information about focal length, field of view, and optical characteristics.
For applications involving robotic perception, the Robotics Vision solution provides a relevant reference for integrating compact optical systems with robotic imaging platforms; For panoramic and wide-area monitoring applications, the Smart Security solution can be used to explore related vision-system requirements.
If your camera requires a customized focal length, sensor configuration, housing, or optical specification, you can Contact Towin to discuss the required configuration.
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