US 12,436,370 B2
Photographing lens assembly, image capturing unit and electronic device
Chun-Che Hsueh, Taichung (TW); Hung-Shuo Chen, Taichung (TW); Kuan Chun Wang, 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 Oct. 24, 2023, as Appl. No. 18/383,436.
Application 18/092,417 is a division of application No. 16/744,424, filed on Jan. 16, 2020, granted, now 11,579,412, issued on Feb. 14, 2023.
Application 18/383,436 is a continuation of application No. 18/092,417, filed on Jan. 2, 2023.
Claims priority of application No. 108141586 (TW), filed on Nov. 15, 2019.
Prior Publication US 2024/0061216 A1, Feb. 22, 2024
Int. Cl. G02B 3/02 (2006.01); G02B 9/64 (2006.01); G02B 13/00 (2006.01); G02B 13/18 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01); G02B 13/0015 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A photographing lens assembly comprising eight lens elements, the eight 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, a seventh lens element and an eighth lens element, and each of the eight lens elements having an object-side surface facing toward the object side and an image-side surface facing toward the image side;
wherein the first lens element has positive refractive power, the second lens element has negative refractive power, the image-side surface of the fourth lens element is concave in a paraxial region thereof and has at least one inflection point, the object-side surface of the seventh lens element is convex in a paraxial region thereof, the image-side surface of the seventh lens element has at least one inflection point, and the eighth lens element has negative refractive power;
wherein an axial distance between the fifth lens element and the sixth lens element is larger than a central thickness of the sixth lens element;
wherein a sum of central thicknesses of all lens elements of the photographing lens assembly is ΣCT, a sum of axial distances between each of all adjacent lens elements of the photographing lens assembly is ΣAT, a focal length of the first lens element is f1, a focal length of the third lens element is f3, a focal length of the eighth lens element is f8, and the following conditions are satisfied:
0.80<ΣΣCT/ΣAT<1.60;
0.12≤|f1/f3|<1.0; and
|f1/f8|<1.25.