Optical imaging lens

Abstract

An optical imaging lens includes an aperture, a first lens element, a second lens element, a third lens element and a fourth lens element, wherein the first to the fourth lens elements are arranged sequentially along an optical axis from an object side to an image side. Each lens element has an object-side surface facing the object side and allowing imaging light to pass through, and an image-side surface facing the image side and allowing imaging light to pass through. The first lens element has positive diopter and a convex object-side surface. The second, third and fourth lens elements have diopter. The aperture is positioned between the object side and the third lens element.

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