Image capturing optical lens system

摘要

An image capturing optical lens system 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 positive refractive power has a convex object-side surface. The second lens element has refractive power. The third lens element with positive refractive power has a convex image-side surface. The fourth lens element with negative refractive power has a concave object-side surface and a convex image-side surface, wherein the surfaces of the fourth lens element are aspheric. The fifth lens element with negative refractive power has a convex object-side surface and a concave image-side surface, wherein the surfaces of the fifth lens element are aspheric, and the fifth lens element has at least one inflection point on the image-side surface thereof.

主权项

1. An image capturing optical lens system comprising, in order from n object side to an image side:
a first lens element with positive refractive power having a convex object-side surface; a second lens element with refractive power; a third lens element with positive refractive power having a convex image-side surface; a fourth lens element with negative refractive power having a concave object-side surface and a convex image-side surface, wherein the object-side surface and the image-side surface of the fourth lens element are aspheric; and a fifth lens element with negative refractive power having a convex object-side surface and a concave image-side surface, wherein the object-side surface and the image-side surface of the fifth lens element are aspheric, and the fifth lens element has at least one inflection point on the image-side surface thereof; wherein the image capturing optical lens system has a total of five lens elements with refractive power, a focal length of the first lens element is f1, a focal length of the third lens element is f3, a focal length of the fourth lens element f4, a focal length of the fifth lens element is f5, a focal length of the image capturing optical lens system is f, a curvature radius of the object-side surface of the second lens element is R3, and the following relationships are satisfied:
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