OPTICAL IMAGING LENS SYSTEM

Abstract

The invention relates to an optical imaging lens system comprising eleven lens elements in order from object side to image side along the optical path as follows: first lens element, second lens element, third lens element, fourth lens element, fifth lens element, sixth lens element, seventh lens element, eighth lens element, ninth lens element, tenth lens element, and eleventh lens element. There is an air gap in the off-axis region between each of all adjacent lens elements of the optical imaging lens system. At least one of the object-side and image-side surfaces of each of at least two lens elements is situated between the aperture diaphragm and the image surface of the optical imaging lens system, concave in its off-axis region and having at least one critical point convex in its off-axis region.

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