Patent ID: 11906710
Assignee: LARGAN PRECISION CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 16:
17. An image capturing optical lens system comprising six lens elements, the six 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 and a sixth lens element;
wherein each of the six lens elements has an object-side surface facing towards the object side and an image-side surface facing towards the image side;
wherein the fifth lens element has negative refractive power; the image-side surface of the first lens element is convex in a paraxial region thereof; the object-side surface of the second lens element is convex in a paraxial region thereof; the object-side surface of the sixth lens element is convex in a paraxial region thereof;
wherein focal lengths of the third lens element and the sixth lens element have the same sign; curvature radii of the image-side surface of the third lens element and the object-side surface of the fourth lens element have the same sign;
wherein there is an air gap between each of adjacent lens elements of the six lens elements; a maximum image height of the image capturing optical lens system is ImgH, an axial distance between the object-side surface of the first lens element and an image plane is TTL, and the following relationship is satisfied:

TTL/ImgH<1.8.