Zoom lens.

摘要

A zoom lens comprising sequentially from a side of an object: a fixed first lens group constituted by a concave lens, a double convex lens and a meniscus convex lens; a movable second lens group constituted by a meniscus concave lens, a double concave lens and a convex lens; a fixed third lens group constituted by a single lens having at least one aspherical surface; and a movable fourth lens group constituted by a concave lens and two convex lenses at least one of which has at least one aspherical surface. <IMAGE>