US Patent 9759892 Imaging optical lens assembly, image capturing apparatus and electronic device

An imaging optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with negative refractive power has an image-side surface being concave. The second lens element has an object-side surface being concave and an image-side surface being convex. The third lens element has an object-side surface being concave and an image-side surface being convex. The fourth lens element with positive refractive power has an image-side surface being convex. The fifth lens element with negative refractive power has an object-side surface being concave.