US 12,468,126 B2
Optical imaging lens
Wei-Jeh Kao, Taichung (TW); Qingzhi Zhu, Fujian (CN); Songchao Huang, Fujian (CN); and Hung-Chien Hsieh, Taichung (TW)
Assigned to Genius Electronic Optical (Xiamen) Co., Ltd., Fujian (CN)
Filed by Genius Electronic Optical (Xiamen) Co., Ltd., Fujian (CN)
Filed on Jun. 9, 2022, as Appl. No. 17/835,970.
Claims priority of application No. 202111624179.4 (CN), filed on Dec. 28, 2021.
Prior Publication US 2023/0204917 A1, Jun. 29, 2023
Int. Cl. G02B 13/00 (2006.01); G02B 9/64 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An optical imaging lens, from an object side to an image side in order along an optical axis 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, seventh lens element and an eighth lens element, the first lens element to the eighth lens element each having an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through, wherein:
an optical axis region of the image-side surface of the first lens element is concave;
a periphery region of the image-side surface of the third lens element is convex;
the fourth lens element has negative refracting power;
an optical axis region of the object-side surface of the fifth lens element is concave;
an optical axis region of the image-side surface of the seventh lens element is concave;
a periphery region of the object-side surface of the eighth lens element is convex;
wherein lens elements included by the optical imaging lens are only the eight lens elements described above, and wherein the optical imaging lens satisfies the relationships: (EFL+AAG)/ALT≥2.200 and TTL/(G23+G56+G78)≤4.000, wherein EFL is an effective focal length of the optical imaging lens, AAG is a sum of seven air gaps from the first lens element to the eighth lens element along the optical axis, ALT is a sum of thicknesses of the eight lens elements from the first lens element to the eighth lens element along the optical axis, TTL is the distance from the object-side surface of the first lens element to an image plane along the optical axis, G23 is an air gap between the second lens element and the third lens element along the optical axis, G56 is an air gap between the fifth lens element and the sixth lens element along the optical axis, G78 is an air gap between the seventh lens element and the eighth lens element along the optical axis.