公开(公告)号：US20180356614A1

公开(公告)日：2018-12-13

申请号：US15653204

申请日：2017-07-18

Applicant: LARGAN Precision Co., Ltd.

Inventor： Chun-Che HSUEH ,  Tzu-Chieh KUO

IPC: G02B13/00 ,  G02B1/00

CPC classification number: G02B13/0045 ,  G02B1/007 ,  G02B1/04 ,  G02B13/001 ,  G02B13/18

Abstract: An optical imaging lens assembly includes, 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. The second lens element has positive refractive power. The third lens element has negative refractive power. The fifth lens element has positive refractive power. The sixth lens element has negative refractive power. At least one surface among object-side surfaces and image-side surfaces of the six lens elements of the optical imaging lens assembly has at least one critical point in an off-axial region thereof and is aspheric.

公开(公告)号：US20240176110A1

公开(公告)日：2024-05-30

申请号：US18433588

申请日：2024-02-06

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Tzu-Chieh KUO

IPC: G02B13/00 ,  G02B9/64 ,  G02B13/18

CPC classification number: G02B13/0045 ,  G02B9/64 ,  G02B13/18

Abstract: A photographing optical lens assembly includes eight lens elements, the eight 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, a sixth lens element, a seventh lens element and an eighth lens element. Each of the eight lens elements has an object-side surface facing towards the object side and an image-side surface facing towards the image side. At least one surface of the object-side surface and the image-side surface of at least one lens element of the photographing optical lens assembly is aspheric and includes at least one inflection point.

公开(公告)号：US20240151939A1

公开(公告)日：2024-05-09

申请号：US18096457

申请日：2023-01-12

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu Jui LIN ,  Tzu-Chieh KUO

IPC: G02B9/62 ,  G02B13/00 ,  H04N23/55

CPC classification number: G02B9/62 ,  G02B13/0045 ,  H04N23/55 ,  G03B30/00

Abstract: An imaging lens assembly includes six 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 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. The first lens element has positive refractive power. The image-side surface of the fourth 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 imaging lens assembly has at least one critical point in an off-axis region thereof.

公开(公告)号：US20230393372A1

公开(公告)日：2023-12-07

申请号：US17895864

申请日：2022-08-25

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu Jui LIN ,  Tzu-Chieh KUO

IPC: G02B9/64

CPC classification number: G02B9/64

Abstract: An imaging optical lens system includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element, in order from an object side to an image side along an optical path. The first lens element has an object-side surface being concave in a paraxial region thereof. The fourth lens element has negative refractive power. The fifth lens element has positive refractive power. At least one lens surface of at least one lens element of the imaging optical lens system has at least one critical point in an off-axis region thereof.

公开(公告)号：US20230168470A1

公开(公告)日：2023-06-01

申请号：US17561067

申请日：2021-12-23

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu-Chun KE ,  Hong Rong KUO ,  Tzu-Chieh KUO

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

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

Abstract: An optical imaging 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 seventh lens element has negative refractive power, and the object-side surface of the seventh lens element is concave 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 imaging system has at least one inflection point in an off-axis region thereof.

公开(公告)号：US20230132957A1

公开(公告)日：2023-05-04

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

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：US20230088080A1

公开(公告)日：2023-03-23

申请号：US18052596

申请日：2022-11-04

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu-Tai TSENG ,  Tzu-Chieh KUO

IPC: G02B13/00 ,  G02B9/64

Abstract: A photographing optical lens assembly includes eight 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, a seventh lens element and an eighth lens element. Each of the eight lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The first lens element has positive refractive power. The object-side surface of the fifth lens element is concave in a paraxial region thereof. The image-side surface of the sixth lens element is concave in a paraxial region thereof. The object-side surface of the seventh lens element is convex in a paraxial region thereof. The image-side surface of the eighth lens element is concave in a paraxial region thereof.

公开(公告)号：US20220390815A1

公开(公告)日：2022-12-08

申请号：US17827580

申请日：2022-05-27

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Po-Lun HSU ,  Tzu-Chieh KUO

IPC: G03B17/17 ,  G02B15/15 ,  G02B13/00 ,  G03B5/02

Abstract: An optical imaging lens assembly having a zooming function includes, in order from an object side to an image side along an optical path: a reflection group and a lens group. The reflection group includes a prism having an object-side surface being convex. The prism includes a reflection surface configured to reflect an imaging light passing through the object-side surface of the prism and send the imaging light to an image-side surface of the prism. The lens group includes at least three lens elements arranged along the optical path, and each of the at least three lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The lens group includes a movable group, and the movable group moves along a direction parallel to an optical axis in a zooming process.

公开(公告)号：US20220214522A1

公开(公告)日：2022-07-07

申请号：US17695735

申请日：2022-03-15

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen CHEN ,  Kuan-Ting YEH ,  Tzu-Chieh KUO

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

Abstract: A photographing optical system includes eight 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, a sixth lens element, a seventh lens element and an eighth lens element. The eight lens elements each have an object-side surface facing toward the object side and an image-side surface facing toward the image side. The first lens element has positive refractive power. The fifth lens element has positive refractive power. The object-side surface of the seventh lens element is convex in a paraxial region thereof. The image-side surface of the eighth lens element is concave in a paraxial region thereof. At least one lens surface of at least one lens element of the photographing optical system has at least one critical point in an off-axis region thereof.

公开(公告)号：US20220187570A1

公开(公告)日：2022-06-16

申请号：US17148430

申请日：2021-01-13

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan Chun WANG ,  Tzu-Chieh KUO

IPC: G02B13/00 ,  G02B9/64 ,  G02B27/00 ,  G02B13/06 ,  G02B13/02

Abstract: A photographing optical lens 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 concave in a paraxial region thereof, and the image-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 photographing optical lens system has at least one inflection.