Patent ID: 9696523
Date: 2017-07-04
CPC Classifications: G02B

Claim:
1. An optical imaging lens, comprising: a stop; a first lens element with a positive refractive power, having an object-side surface being convex near an optical axis and an image-side surface being convex near the optical axis, at least one of the object-side surface and the image-side surface of the first lens element being aspheric; a second lens element with a negative refractive power, having an object-side surface being convex near the optical axis, at least one of the object-side surface and an image-side surface of the second lens element being aspheric; a third lens element with refractive power having an image-side surface being concave near the optical axis, at least one of an object-side surface and the image-side surface of the third lens element being aspheric; a fourth lens element with a positive refractive power, having an object-side surface being concave near the optical axis and an image-side surface being convex near the optical axis, at least one of the object-side surface and the image-side surface of the fourth lens element being aspheric; and a fifth lens element with a negative refractive power, having an object-side surface being concave near the optical axis and an image-side surface being concave near the optical axis, at least one of the object-side surface and the image-side surface being aspheric and provided with at least one inflection point; wherein 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 second lens element, the third lens element and the fourth lens element combined is f234, a focal length of the fifth lens element is f5, and they satisfy the relations: