US 12,292,550 B2
Optical imaging lens assembly including seven lenses of −+−+−+− or −+−+−−− refractive powers
Fujian Dai, Yuyao (CN); Wuchao Xu, Yuyao (CN); and Liefeng Zhao, Yuyao (CN)
Assigned to Zhejiang Sunny Optics Co., Ltd, (CN)
Filed by Zhejiang Sunny Optics Co., Ltd, Yuyao (CN)
Filed on Aug. 16, 2021, as Appl. No. 17/403,261.
Claims priority of application No. 202011211407.0 (CN), filed on Nov. 3, 2020.
Prior Publication US 2022/0137366 A1, May 5, 2022
Int. Cl. G02B 13/00 (2006.01); G02B 9/64 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01)] 19 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 sequentially from an object side to an image side along an optical axis; wherein
the first lens has a negative refractive power, an object-side surface of the first lens is a concave surface, and an image-side surface of the first lens is a convex surface;
the third lens has a negative refractive power; and
a distance TTL from the object-side surface of the first lens to an imaging surface of the optical imaging lens assembly on the optical axis and ImgH being a half of a diagonal length of an effective pixel region on the imaging surface of the optical imaging lens assembly satisfy: TTL/ImgH≤1.4,
wherein a radius R3 of curvature of an object-side surface of the second lens, a radius R4 of curvature of an image-side surface of the second lens, and a combined focal length f12 of the first lens and the second lens satisfy: 3.8≤f12/R3+f12/R4≤4.8.