US 11,940,601 B2
Optical imaging lens assembly
Xinquan Wang, Zhejiang Province (CN); and Lin Huang, Zhejiang Province (CN)
Assigned to Zhejiang Sunny Optical Co., Ltd, Zhejiang Province (CN)
Filed by Zhejiang Sunny Optical Co., Ltd, Zhejiang Province (CN)
Filed on Sep. 15, 2020, as Appl. No. 17/021,399.
Application 17/021,399 is a continuation of application No. PCT/CN2019/099389, filed on Aug. 6, 2019.
Claims priority of application No. 201811423978.3 (CN), filed on Nov. 27, 2018.
Prior Publication US 2020/0409121 A1, Dec. 31, 2020
Int. Cl. G02B 9/64 (2006.01); G02B 13/00 (2006.01); G02B 13/18 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01); G02B 13/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical imaging lens assembly, comprising, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens,
wherein,
the first lens has negative refractive power;
the second lens has negative refractive power;
the third lens has positive refractive power;
the fourth lens has positive refractive power;
the fifth lens has negative refractive power, and an object-side surface of the fifth lens is a concave surface;
the sixth lens has refractive power; and
the seventh lens has negative refractive power,
wherein −3.5<f1/f<0, and
0.5<CT3/(CT4+CT6)<1.2,
where f1 is an effective focal length of the first lens, f is a total effective focal length of the optical imaging lens assembly, CT3 is a center thickness of the third lens along the optical axis, CT4 is a center thickness of the fourth lens along the optical axis, and CT6 is a center thickness of the sixth lens along the optical axis.