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, a fifth lens element, and a sixth 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 refractive power has a concave image-side surface. The fourth lens element has refractive power, and at least one surface thereof is aspheric. The fifth lens element with negative refractive power has a concave object-side surface and a convex image-side surface, and the surfaces thereof are aspheric. The sixth lens element with refractive power has a convex object-side surface, and an image-side surface changing from concave at a paraxial region thereof to convex at a peripheral region thereof, and the surfaces are aspheric.

主权项

1. An image capturing optical lens system comprising, in order from an object side to an image side:
a first lens element with positive refractive power having an object-side surface being convex at a paraxial region thereof; a second lens element; a third lens element; a fourth lens element having at least one of an object-side surface and an image-side surface being aspheric; a fifth lens element having an object-side surface and an image-side surface being both aspheric; and a sixth lens element having an object-side surface being convex at a paraxial region thereof and an image-side surface being concave at a paraxial region thereof, wherein the image-side surface of the sixth lens element has a convex shape at a peripheral region thereof, and the object-side surface and the image-side surface of the sixth lens element are both aspheric; wherein the image capturing optical lens system has a total of six lens elements, there is an air space between every two of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element which are adjacent to each other, an axial distance between the first lens element and the second lens element is smaller than an axial distance between the second lens element and the third lens element, an Abbe number of the fifth lens element is V5, an Abbe number of the sixth lens element is V6, a curvature radius of the object-side surface of the first lens element is R1, a curvature radius of an image-side surface of the first lens element is R2, and the following relationships are satisfied:
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