A lens assembly consisting of 5 lenses, spacer rings, a field stop and retaining rings. The lens complement is composed of: a double convex 13 mm diameter, 37 mm focal length; a positive meniscus 12 mm diameter, 17.5 mm focal length; a cemented compound negative meniscus 10 mm diameter, -25.5 mm focal length; a cemented compound negative meniscus 10 mm diameter, -24 mm focal length; and a positive meniscus 12mm diameter, 24 mm focal length. The glass elements are all anti-reflection coated. Unused
