US 12,019,221 B2
Optical imaging lens including eight lenses of +−+−+−+−, +−+−+−++, +−++−−+−, or +−+−−++− refractive powers
Chuanbo Dong, Fujian (CN); Jiali Lian, Fujian (CN); and Jiayuan Zhang, Fujian (CN)
Assigned to Genius Electronic Optical (Xiamen) Co., Ltd., Fujian (CN)
Filed by Genius Electronic Optical (Xiamen) Co., Ltd., Fujian (CN)
Filed on Sep. 27, 2022, as Appl. No. 17/953,345.
Application 17/953,345 is a continuation of application No. 16/820,734, filed on Mar. 17, 2020, granted, now 11,487,085.
Claims priority of application No. 201911326343.6 (CN), filed on Dec. 20, 2019.
Prior Publication US 2023/0082632 A1, Mar. 16, 2023
Int. Cl. G02B 13/00 (2006.01); G02B 9/64 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01)] 20 Claims
OG exemplary drawing
 
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.