Patent ID: 11933948
Assignee: LARGAN PRECISION CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A photographing optical lens assembly comprising seven lens elements, and 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 sixth lens element has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, the seventh lens element has an image-side surface being concave in a paraxial region thereof, the image-side surface of the seventh lens element has at least one inflection point, and an absolute value of a curvature radius of an object-side surface of the fourth lens element is larger than an absolute value of a curvature radius of the object-side surface of the sixth lens element;
wherein a focal length of the photographing optical lens assembly is f, an entrance pupil diameter of the photographing optical lens assembly is EPD, a focal length of the first lens element is f1, a focal length of the second lens element is f2, and the following conditions are satisfied:

1.2<f/EPD≤1.8; and

|f1/f2|<2.0.