公开(公告)号：US20230228973A1

公开(公告)日：2023-07-20

申请号：US18060997

申请日：2022-12-02

申请人： LARGAN PRECISION CO., LTD.

发明人： Kuan-Ting YEH ,  Meng-Kuan CHO ,  Cheng-Yu TSAI

IPC分类号： G02B9/62 ,  G02B1/04

CPC分类号： G02B9/62 ,  G02B1/041

摘要： An imaging optical system lens assembly includes six lens elements, which is, in order from an object side to an image side along an optical path, 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. The first lens element has negative refractive power, the object-side surface of the first lens element is concave in a paraxial region thereof, the image-side surface of the first lens element is convex in a paraxial region thereof. The second lens element has positive refractive power, the object-side surface of the second lens element is convex in a paraxial region thereof, the image-side surface of the second lens element is concave in a paraxial region thereof. The fifth lens element has positive refractive power.