Small Fisheye M12 Lens for up to 5MP sensors

CIL292 is a 2.3mm F/2.1 M12 fisheye lens with a 183° field of view and -3% F-θ distortion. The point of this design is simple: it gives you very wide coverage while holding angular mapping tighter than a typical action-camera style optic. That helps angular resolution stay more even across the image. As a fisheye it projects its full 183° circular field of view onto sensors such as the Onsemi AR0521 and the Onsemi AR0234.

The lens is built around a 7.1mm image circle, and that gives you room with larger small-format sensors. On 1/2.7" sensors, the same image circle can produce a circular fisheye image instead of filling the full rectangle. Commonlands lists the lens for sensor formats ≥1/2.5", so you have some flexibility if the sensor decision is still open.

The lens is specified for 5MP+ imaging with 1.85μm pixels, which makes it a better fit for current embedded vision cameras than an older 2MP fisheye. The optical construction is 5G1MG, and the weight is only 3g. That low mass helps when shock, bracket stiffness, or module envelope all look tight on the mechanical drawing.

The standard mechanical variant is IP67 with an aluminum cap and barrel. If you need a lens for surround view, occupancy sensing, or edge-aware perception, this one is worth a serious look because it gives fisheye coverage without giving up as much control over distortion behavior.