IMAGE LENS ASSEMBLY AND IMAGE CAPTURING DEVICE

摘要

An image 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, 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 positive refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element with negative refractive power has a concave object-side surface, wherein both of the surfaces of the fifth lens element are aspheric. The sixth lens element with refractive power has a concave image-side surface, wherein the image-side surface thereof has at least one inflection point, and both of the surfaces of the sixth lens element are aspheric. The image lens assembly has a total of six lens elements with refractive power.

主权项

1. An image lens assembly comprising, in order from an object side to an image side:
a first lens element having a convex object-side surface; a second lens element with positive refractive power having a convex object-side surface; a third lens element having a concave image-side surface; a fourth lens element; a fifth lens element having negative refractive power, wherein both of an object-side surface and an image-side surface of the fifth lens element are aspheric; and a sixth lens element having a concave image-side surface, wherein the image-side surface of the sixth lens element has at least one inflection point, and both of an object-side surface and the image-side surface of the sixth lens element are aspheric; wherein the image lens assembly has a total of six lens elements, a central thickness of the sixth lens element is greater than a central thickness of the fourth lens element, a focal length of the image lens assembly is f, a focal length of the first lens element is f1, a focal length of the second lens element is f2, an entrance pupil diameter of the image lens assembly is EPD, and the following conditions are satisfied:
|f/f1|+|f/f2|<1.80; and1.4