215° Zero F-Theta Fisheye M12 Lens for IP67 Embedded Vision

CIL220 is a 1.8mm F/2.3 fisheye M12 lens with a 215-degree field of view at a 6.8mm image circle. It is one of the widest options available in a standard M12 package. The unusual part is the near-zero F-theta distortion across the central 160-degree range.

Most fisheyes past 200 degrees compress the periphery hard. This lens suppresses that in the part of the image where many machine vision systems care most, especially in object detection, distance estimation, and omnidirectional surveillance.

Format coverage extends to 2/3" for circular fisheye imaging. At F/2.3, the lens targets 2-5MP on 1/1.7" sensors. At F/2.8, the same optical formula supports 8MP and above on 1/1.7" sensors. Total weight is 4.0g and TTL is 16.3mm, which is compact for 215 degrees coverage.

Two mechanical variants are available. M12B uses BBAR coating on lens surface 1 with an IP69K-rated AL6061 aluminum cap and barrel. M12C replaces BBAR with a hydrophobic coating on the first lens surface, which helps the lens shed water and resist fouling in rain, spray, and condensation. Both variants need a 7mm-9mm tall M12 holder, and that requirement is a hard mechanical limit.

Most standard industrial board cameras do not fit. Allied Vision Alvium, FLIR Blackfly S, iDS uEye LE, and The Imaging Source M12 boards are mechanically incompatible. Confirmed options are the Commonlands CLA018 holder and e-con Systems standard S-mount boards with 7-9mm holders. Basler Dart users should confirm compatibility with Basler directly. STP files and mechanical drawings are available on the product page, orders placed before 12 PM PST ship same day from San Diego, and volume pricing starts at 50 units.