Patent ID: 11880020
Assignee: GENIUS ELECTRONIC OPTICAL (XIAMEN) CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. An optical imaging lens, comprising 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 arranged in sequence from an object side to an image side along an optical axis, each of the first lens element to the seventh lens element comprising an object-side surface facing the object side and allowing imaging rays to pass through and an image-side surface facing the image side and allowing the imaging rays to pass through, wherein
the object-side surface of the first lens element has a convex portion in a vicinity of the optical axis;
the object-side surface of the third lens element has a convex portion in a vicinity of a periphery of the third lens element;
the object-side surface of the fourth lens element has a convex portion in a vicinity of the optical axis;
the image-side surface of the fourth lens element has a convex portion in a vicinity of a periphery of the fourth lens element;
the image-side surface of the fifth lens element has a concave portion in a vicinity of the optical axis;
the object-side surface of the sixth lens element has a concave portion in a vicinity of a periphery of the sixth lens element;
wherein lens elements of the optical imaging lens are only the seven lens elements described above, and the optical imaging lens satisfies:

EFL/(T1+T4+G56)≤3.51,

EFL is an effective focal length of the optical imaging lens, T1 is a thickness of the first lens element along the optical axis, T4 is a thickness of the fourth lens element along the optical axis, G56 is an air gap from the fifth lens element to the sixth lens element along the optical axis.