US 12,481,124 B2
Optical imaging lens assembly
Lihui Ye, Yuyao (CN); Fujian Dai, 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 Mar. 15, 2022, as Appl. No. 17/694,921.
Claims priority of application No. 202110279434.X (CN), filed on Mar. 16, 2021.
Prior Publication US 2022/0299734 A1, Sep. 22, 2022
Int. Cl. G02B 13/18 (2006.01); G02B 9/60 (2006.01); G02B 13/00 (2006.01)
CPC G02B 9/60 (2013.01) [G02B 13/0045 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An optical imaging lens assembly, comprising, sequentially along an optical axis from an object side to an image side:
a stop;
a first lens having positive refractive power or negative refractive power, an image-side surface of the first lens is convex;
a second lens having negative refractive power;
a third lens having positive refractive power, an image-side surface of the third lens is concave;
a fourth lens having positive refractive power or negative refractive power, an image-side surface of the fourth lens is convex; and
a fifth lens having positive refractive power or negative refractive power,
wherein at least one of an object-side surface and an image-side surface of the first lens to the fifth lens is aspheric,
f2≤−4.3 mm,
T34≥0.3176 mm,
1.0<|f3/f2|<5.0,
1.84≤|f/R4+f/R9|<4.0,
0.69≤|f/R2+f/R5|<1.5,
0.8<T34/CT3<1.5,
2.0<CT4/ET4<4.0, and
0.5<SAG12/SAG41<4.0,
where f2 is an effective focal length of the second lens, f3 is an effective focal length of the third lens, f is a total effective focal length of the optical imaging lens assembly, R4is a radius of curvature of an image-side surface of the second lens, R9 is a radius of curvature of an object-side surface of the fifth lens, R2 is a radius of curvature of the image-side surface of the first lens, R5 is a radius of curvature of an object-side surface of the third lens, T34 is a spaced interval between the third lens and the fourth lens along the optical axis, 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, ET4 is an edge thickness of the fourth lens, 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 point projected from a vertex of an effective radius of the object-side surface of the fourth lens onto the optical axis, and SAG12 is a distance along the optical axis from an intersection of the image-side surface of the first lens and the optical axis to a point projected from a vertex of an effective radius of the image-side surface of the first lens onto the optical axis.