The EMERALD 4.0/80mm 21-1085723 lens is a 10MP-class F-mount lens for up to 60 mm (2.36") image circle with ultra low distortion.

EMERALD lenses are ultra-low distortion lenses with an image circle diameter of 43.2 mm, featuring a compact, robust design, locking focus and iris. They are designed for close up range or infinity and optimized for a uniform image quality over the whole sensor area. The 400-1000 nm broadband coating makes them suitable for applications in the visible and the near infrared spectrum. EMERALD lenses are available in F-S and F-L variants. The F-SD version is suitable for "close up" finite working distances typical of machine vision applications. The F-LD version is optimized for long working distances out to Infinity.