US 11,656,443 B2
Photographing lens assembly, imaging apparatus and electronic device
Chun-Che Hsueh, Taichung (TW); Chun-Yen Chen, Taichung (TW); and Wei-Yu Chen, Taichung (TW)
Assigned to LARGAN PRECISION CO., LTD., Taichung (TW)
Filed by LARGAN PRECISION CO., LTD., Taichung (TW)
Filed on Sep. 21, 2022, as Appl. No. 17/933,867.
Application 17/933,867 is a continuation of application No. 17/064,644, filed on Oct. 7, 2020, granted, now 11,487,091.
Application 17/064,644 is a continuation of application No. 15/822,312, filed on Nov. 27, 2017, granted, now 10,838,173, issued on Nov. 17, 2020.
Claims priority of application No. 106124172 (TW), filed on Jul. 19, 2017.
Prior Publication US 2023/0041230 A1, Feb. 9, 2023
Int. Cl. G02B 13/00 (2006.01); G02B 9/64 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A photographing lens assembly comprising seven lens elements, the seven lens elements being, in order from an object side to an image side:
a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element;
wherein the first lens element has positive refractive power;
the second lens element has negative refractive power;
the fifth lens element has negative refractive power; and
the sixth lens element has positive refractive power; an object-side surface of the sixth lens element is convex in a paraxial region thereof; an image-side surface of the sixth lens element is concave in a paraxial region thereof;
wherein an absolute value of a focal length of the third lens element is larger than an absolute value of a focal length of the fifth lens element; an absolute value of a curvature radius of an object-side surface of the fifth lens element is larger than an absolute value of a curvature radius of an object-side surface of the first lens element;
wherein a sum of axial distances between each of adjacent lens elements of the photographing lens assembly is ΣAT, an axial distance between the sixth lens element and the seventh lens element is T67, an axial distance between the object-side surface of the first lens element and an image surface is TL, a maximum image height of the photographing lens assembly is ImgH, and the following conditions are satisfied:
1.0<ΣAT/T67<3.0; and
0.50<TL/ImgH≤1.57.