US 12,092,796 B2
Optical imaging lens assembly
Long Li, Ningbo (CN); and Saifeng Lyu, Ningbo (CN)
Assigned to ZHEJIANG SUNNY OPTICAL CO., LTD, Ningbo (CN)
Filed by Zhejiang Sunny Optical Co., Ltd, Ningbo (CN)
Filed on Sep. 2, 2020, as Appl. No. 17/010,583.
Application 17/010,583 is a continuation of application No. PCT/CN2019/099384, filed on Aug. 6, 2019.
Claims priority of application No. 201811278061.9 (CN), filed on Oct. 30, 2018.
Prior Publication US 2021/0048645 A1, Feb. 18, 2021
Int. Cl. G02B 9/64 (2006.01); G02B 13/00 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An optical imaging lens assembly, comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, which are sequentially arranged from an object side to an image side along an optical axis and each of which has refractive power,
wherein,
the first lens has positive refractive power, and both an object-side surface and an image-side surface of the first lens are convex surfaces;
the second lens has negative refractive power, and an object-side surface of the second lens is a convex surface; and
an image-side surface of the fourth lens is a concave surface;
wherein TTL/f<1, where TTL is a distance along the optical axis from the object-side surface of the first lens to an imaging plane of the optical imaging lens assembly, and f is a total effective focal length of the optical imaging lens assembly; and
wherein 0.8<SAG41/CT4<1.3,
where SAG41 is a distance along the optical axis from an intersection of an object-side surface of the fourth lens and the optical axis to a vertex of a maximum effective radius of the object-side surface of the fourth lens, and CT4 is a center thickness along the optical axis of the fourth lens.