Patent ID: 11940601
Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
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.