This is a lens assembly of 4 elements: a 17 mm diameter, 80 mm focal length positive meniscus, a 20 mm, -36 mm focal length negative meniscus, a 16 mm, -93 mm focal length negative meniscus, and an 18 mm diameter, 49 mm focal length positive meniscus. All glass surfaces are anti-reflection coated. The assembly is not labelled.. Unused. Only have a few.
