US 11,656,433 B2
Optical imaging lens assembly
Xiaobin Zhang, Ningbo (CN); Jianke Wenren, Ningbo (CN); Liefeng Zhao, Ningbo (CN); and Fujian Dai, Ningbo (CN)
Assigned to Zhejiang Sunny Optical Co., Ltd
Filed by Zhejiang Sunny Optical Co., Ltd, Ningbo (CN)
Filed on Sep. 8, 2020, as Appl. No. 17/14,437.
Claims priority of application No. 201910964009.7 (CN), filed on Oct. 11, 2019.
Prior Publication US 2021/0109318 A1, Apr. 15, 2021
Int. Cl. G02B 13/00 (2006.01); G02B 9/16 (2006.01)
CPC G02B 13/0035 (2013.01) [G02B 9/16 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An optical imaging lens assembly, sequentially from an object side to an image side of the optical imaging lens assembly along an optical axis, comprising:
a first lens having positive refractive power with a convex image-side surface;
a second lens having negative refractive power with a concave object-side surface; and
a third lens having a positive refractive power,
wherein 1.0<CT1/DT11<2.0,
where CT1 is a center thickness of the first lens along the optical axis, and DT11 is a maximum effective radius of an object-side surface of the first lens; and
ETL/EIN<1.5,
where ETL is a distance parallel to the optical axis from the object-side surface of the first lens to an imaging plane of the optical imaging lens assembly at a 1/2 entrance pupil diameter, and EIN is a distance parallel to the optical axis from the object-side surface of the first lens to an image-side surface of the third lens at the 1/2 entrance pupil diameter.