200° M12 Miniature Fisheye Lens for up to 1/1.8" sensors such as IMX728 and AR0823

The CIL231 is a 3.1mm M12 fisheye lens with 190° field of view on 1/1.8 inch sensors such as the IMX728 and AR0823. It uses a fixed F/1.9 aperture, all-glass optics in an aluminum barrel, IP67 sealing, and a 12g package, so it fits outdoor or washdown systems that still need high pixel density.

The lens uses -10% F-theta distortion. That projection spreads angular resolution more evenly across the frame than a standard equidistant fisheye, which helps when stitched panoramic views or surround-view systems still need useful edge detail instead of wasting pixels in the center. The lens resolves 12MP+ at 1.55μm pixel pitch across the full 190° field. You can check sensor coverage the field of view calculator.

All-glass elements and BBAR coating on the first surface help control flare. The sealed M12A metal barrel handles dust, rain, and washdown environments without needing a second enclosure around the lens. Order CIL231-F1.9-M12A650 with the 650nm IR cut filter for daylight imaging, or CIL231-F1.9-M12ANIR for NIR-sensitive applications.

The lens mounts to Commonlands CLA019-LCP holders with 8-13mm standoff. It is mechanically compatible with e-con Systems, Allied Vision Alvium, FLIR Blackfly S, iDS uEye XLS, The Imaging Source, and Basler Dart S-mount board cameras.

Commonlands ships this lens same day from San Diego for orders placed before 12 PM PST. Contact our optical engineers if you need volume pricing or STP files for CAD integration.