公开(公告)号：US11668898B2

公开(公告)日：2023-06-06

申请号：US17020590

申请日：2020-09-14

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu-Chun Ke ,  Jin Sen Wang ,  Ssu-Hsin Liu ,  Wei-Yu Chen

IPC: G02B9/60 ,  G02B13/00 ,  G02B13/02 ,  G02B27/00 ,  G02B13/18

CPC classification number: G02B9/60 ,  G02B13/0045 ,  G02B13/02 ,  G02B27/0025

Abstract: An image lens assembly includes five lens elements which are, 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 and a fifth lens element. The first lens element has positive refractive power. The second lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and having at least one concave critical point in an off-axis region thereof. The fifth lens element has an image-side surface being concave in a paraxial region thereof and having at least one convex critical point in an off-axis region thereof.

公开(公告)号：US11719911B2

公开(公告)日：2023-08-08

申请号：US17115731

申请日：2020-12-08

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu Jui Lin ,  Yu-Chun Ke ,  Jin Sen Wang ,  Wei-Yu Chen ,  Chun-Yen Chen

IPC: G02B13/00 ,  G02B9/64 ,  G02B13/02 ,  G02B27/00

CPC classification number: G02B9/64 ,  G02B13/0045 ,  G02B13/02 ,  G02B27/0025

Abstract: An imaging optical lens assembly includes seven lens elements which are, 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, a sixth lens element and a seventh lens element. The third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element has negative refractive power. The fifth lens element has an object-side surface being concave in a paraxial region thereof. The sixth lens element with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, and the image-side surface of the sixth lens element has at least one critical point in an off-axis region thereof.

公开(公告)号：US12099257B2

公开(公告)日：2024-09-24

申请号：US17537870

申请日：2021-11-30

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Jin Sen Wang ,  Kuo-Jui Wang ,  Kuan-Ting Yeh ,  Tzu-Chieh Kuo

IPC: G02B9/64 ,  G02B13/00 ,  H01L27/146

CPC classification number: G02B9/64 ,  G02B13/0045 ,  H01L27/14627

Abstract: An optical photographing system includes seven lens elements which are, 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, a sixth lens element and a seventh lens element. Each of the seven lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the sixth lens element is convex in a paraxial region thereof. At least one of the object-side surface and the image-side surface of at least one lens element of the optical photographing system has at least one inflection point.

公开(公告)号：US11662551B2

公开(公告)日：2023-05-30

申请号：US16814914

申请日：2020-03-10

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuo-Jui Wang ,  Kuan Chun Wang ,  Hung-Shuo Chen ,  Jin Sen Wang ,  Syuan Ruei Lai ,  Wei-Yu Chen

IPC: G02B9/34 ,  G02B13/18 ,  G02B13/00 ,  G02B13/14 ,  G02B5/00 ,  G02B27/00 ,  G02B3/04

CPC classification number: G02B9/34 ,  G02B13/004 ,  G02B13/18 ,  G02B3/04 ,  G02B5/005 ,  G02B13/14 ,  G02B27/0025

Abstract: An optical lens assembly includes four lens elements which are, in order from an object side to an image side along an imaging optical path: a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element has positive refractive power. The second lens element has an image-side surface being concave in a paraxial region thereof. The third lens element has an object-side surface being concave in a paraxial region thereof. The fourth lens element with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, and at least one of the object-side surface and the image-side surface of the fourth lens element has at least one inflection point in an off-axis region thereof.

公开(公告)号：US11686922B2

公开(公告)日：2023-06-27

申请号：US16897737

申请日：2020-06-10

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu Jui Lin ,  Yu-Chun Ke ,  Jin Sen Wang ,  Wei-Yu Chen

IPC: G02B13/00 ,  G02B9/64 ,  H04N23/55

CPC classification number: G02B9/64 ,  G02B13/0045 ,  H04N23/55

Abstract: An imaging optical lens assembly includes seven lens elements which are, 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, a sixth lens element and a seventh lens element. The third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element has negative refractive power. The fifth lens element has an object-side surface being concave in a paraxial region thereof. The sixth lens element with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, and the image-side surface of the sixth lens element has at least one critical point in an off-axis region thereof.

公开(公告)号：US11480765B2

公开(公告)日：2022-10-25

申请号：US16733094

申请日：2020-01-02

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu Jui Lin ,  Cheng-Yuan Liao ,  Jin Sen Wang ,  Tzu-Chieh Kuo

IPC: G02B13/00 ,  G02B9/62 ,  H04N5/225 ,  G02B13/04 ,  G02B9/64 ,  G02B13/18 ,  G02B13/02

Abstract: An imaging optical system includes six lens elements which are, 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. Each of the six lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one of the six lens elements is a freeform lens element, and at least one of the object-side surface and the image-side surface of the at least one freeform lens element is a freeform surface.