Five-piece lens set for capturing images

摘要

A five-piece lens set for capturing images, which includes a fixed aperture stop and an optical lens set, is disclosed. The optical lens set includes a first, a second, a third, a fourth and a fifth lens elements. The first lens element has negative refractive power adjacent to optical axis and a concave image side surface. The second lens element has negative refractive power adjacent to optical axis. The third lens element has positive refractive power adjacent to optical axis, both convex image side and object side surface. The fourth lens element has positive refractive power adjacent to optical axis and a convex object side surface. The fifth lens element has negative refractive power adjacent to optical axis and a convex image side surface. There is an interval between the image side surface of the fourth lens element and the object side surface of the fifth lens element.

主权项

1. A five-piece lens set for capturing images, comprising:
a fixed aperture stop; an optical lens set, sequentially from an object side surface to an image side surface along an optical axis comprising
a first lens element, the first lens element having negative refractive power adjacent to the optical axis and an image side surface of the first lens element being a concave surface;a second lens element, the second lens element having negative refractive power adjacent to the optical axis;a third lens element, the third lens element having positive refractive power adjacent to the optical axis, an object side surface of the third lens element being a convex surface and an image side surface of the third lens element being a convex surface;a fourth lens element, the fourth lens element having positive refractive power adjacent to the optical axis and an object side surface of the fourth lens element being a convex surface;a fifth lens element, the fifth lens element having negative refractive power adjacent to the optical axis and an image side surface of the fifth lens element being a convex surface, wherein the image side surface of the fifth lens element is an aspherical surface;wherein there is a length of air interval between an image side surface of the fourth lens element and an object side surface of the fifth lens element, the image side surface of the fifth lens element has at least one inflection point, and a vertical distance on the image side surface of the fifth lens element between an inflection point nearest to the optical axis and the optical axis is HI, and the following relation is satisfied: 0 mm≦HI≦1 mm.