Patent ID: 11927729
Assignee: LARGAN PRECISION CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A photographing optical 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;
wherein each of the eight lens elements has an object-side surface facing towards the object side and an image-side surface facing towards the image side;
wherein the first lens element has negative refractive power, the eighth lens element has negative refractive power, the image-side surface of the eighth lens element is concave in a paraxial region thereof and comprises at least one critical point in an off-axis region thereof, and at least one surface of the object-side surface and the image-side surface of at least one lens element of the eight lens elements is aspheric and comprises at least one inflection point;
wherein a half of a maximum field of view of the photographing optical lens assembly is HFOV, an axial distance between the object-side surface of the first lens element and an image surface is TL, a focal length of the photographing optical lens assembly is f, a focal length of the first lens element is f1, a vertical distance between the critical point in the off-axis region on the image-side surface of the eighth lens element and an optical axis is Yc82, a vertical distance between a maximum effective diameter position of the image-side surface of the eighth lens element and the optical axis is Y82, and the following conditions are satisfied:

55.0 degrees<HFOV;

1.0 mm<TL<12.0 mm;

−1.50<f/f1≤−0.35; and

0.10<Yc82/Y82<0.90.