Patent ID: 11860343
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 sequentially from an object side to an image side along an optical axis, the first lens element to the seventh lens element each comprising an object-side surface facing toward the object side and allowing imaging rays to pass through and an image-side surface facing toward the image side and allowing the imaging rays to pass through, wherein:
the object-side surface of the second lens element comprises a concave portion in a vicinity of a periphery of the second lens element;
the fourth lens element has negative refracting power;
the object-side surface of the fourth lens element comprises a concave portion in a vicinity of a periphery of the fourth lens element;
the image-side surface of the fourth lens element comprises a concave portion in a vicinity of the optical axis;
the object-side surface of the fifth lens element comprises a convex portion in a vicinity of the optical axis;
the object-side surface of the sixth lens element comprises a concave portion in a vicinity of a periphery of the sixth lens element;
the image-side surface of the sixth lens element comprises a convex portion in a vicinity of the optical axis; and
lens elements included by the optical imaging lens are only the seven lens elements described above;
wherein an effective focal length of the optical imaging lens is represented by EFL, an image height of the optical imaging lens is represented by ImgH, and the optical imaging lens further satisfies inequality: EFL/ImgH≤1.800.