CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01)] | 20 Claims |
1. An optical imaging lens comprising a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element sequentially from an object side to an image side along an optical axis, each of the first lens element to the eighth lens element having an object-side surface facing toward the object side to allow imaging rays to pass through as well as an image-side surface facing toward the image side to allow the imaging rays to pass through, wherein:
an optical axis region of the image-side surface of the third lens element is convex;
an optical axis region of the object-side surface of the fourth lens element is concave, and a periphery region of the image-side surface of the fourth lens element is convex;
an optical axis region of the image-side surface of the seventh lens element is concave;
the eighth lens element has negative refracting power;
the lens elements included by the optical imaging lens are only the eight lens elements described above,
wherein the optical imaging lens satisfies the relationships:
EFL*Fno/ImgH≤1.800, wherein EFL is an effective focal length of the optical imaging lens, Fno is a f-number of the optical imaging lens, ImgH is an image height of the optical imaging lens.
|