公开(公告)号：US20200278515A1

公开(公告)日：2020-09-03

申请号：US16879008

申请日：2020-05-20

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Ssu-Hsin LIU ,  Tzu-Chieh KUO

IPC: G02B13/00

Abstract: The present disclosure provides an optical photographing lens system comprising four lens elements, the four lens elements being, in order from an object side to an image side: a first lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof; a second lens element; a third lens element; and a fourth lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, the image-side surface of the fourth lens element having at least one convex critical point in an off-axial region thereof, both the object-side and the image-side surfaces thereof being aspheric.

公开(公告)号：US20200209542A1

公开(公告)日：2020-07-02

申请号：US16267237

申请日：2019-02-04

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Chun-Che HSUEH ,  Tzu-Chieh KUO

IPC: G02B9/64 ,  G02B15/167

Abstract: A photographing optical system includes seven 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, sixth lens element and a seventh lens element. Each of the seven lens elements of the photographing optical system has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The image-side surface of the second lens element is convex in a paraxial region thereof. The third lens element has negative refractive power. At least one lens element of the photographing optical system has at least one aspheric surface having at least one inflection point.

公开(公告)号：US20200150391A1

公开(公告)日：2020-05-14

申请号：US16232744

申请日：2018-12-26

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Chun-Che HSUEH ,  Tzu-Chieh KUO

IPC: G02B13/00 ,  G02B9/62

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. The object-side surface of the second lens element is concave in a paraxial region thereof. The image-side surface of the second lens element is convex in a paraxial region thereof. The image-side surface of the sixth lens element is concave in a paraxial region thereof. At least one lens element of the imaging optical system has at least one aspheric surface having at least one inflection point.

公开(公告)号：US20200096734A1

公开(公告)日：2020-03-26

申请号：US16188866

申请日：2018-11-13

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Chun-Che HSUEH ,  Hung-Shuo CHEN ,  Yu-Tai TSENG ,  Tzu-Chieh KUO

IPC: G02B13/00 ,  G02B9/62

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 lens element of the imaging optical system has at least one aspheric surface having at least one inflection point.

公开(公告)号：US20200049948A1

公开(公告)日：2020-02-13

申请号：US16132179

申请日：2018-09-14

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Tzu-Chieh KUO

IPC: G02B9/62 ,  G02B27/00 ,  G02B13/18

Abstract: An imaging optical lens assembly 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 has at least one aspheric surface having at least one inflection point.

公开(公告)号：US20190384040A1

公开(公告)日：2019-12-19

申请号：US16555619

申请日：2019-08-29

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Yu-Tai TSENG ,  Tzu-Chieh KUO

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

Abstract: An image system lens assembly includes seven 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 and a seventh lens element. At least one surface among object-side surfaces and image-side surfaces of the fifth lens element, the sixth lens element and the seventh lens element has at least one critical point in an off-axis region thereof.

公开(公告)号：US20190271832A1

公开(公告)日：2019-09-05

申请号：US16161283

申请日：2018-10-16

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Tzu-Chieh KUO

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

Abstract: An electronic device includes at least one optical lens system. The optical lens system includes five lens elements, and the five lens elements are, in order from an outside to an inside, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. At least one of outside surfaces and inside surfaces of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element is aspheric and includes at least one inflection point.

公开(公告)号：US20180267271A1

公开(公告)日：2018-09-20

申请号：US15596131

申请日：2017-05-16

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu-Tai TSENG ,  Tzu-Chieh KUO

IPC: G02B9/34 ,  H04N5/225 ,  H04M1/02

CPC classification number: H04M1/0264 ,  G02B7/08 ,  G02B13/004 ,  G02B13/0045 ,  G02B13/0065 ,  G02B27/646 ,  G02B2027/0138 ,  H04N5/2254

Abstract: An optical image capturing assembly includes four lens elements, in order from an object side to an image side, the four lens elements are a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element has negative refractive power. The third lens element has positive refractive power. The fourth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof.

公开(公告)号：US20180143402A1

公开(公告)日：2018-05-24

申请号：US15439594

申请日：2017-02-22

Applicant: LARGAN Precision Co., Ltd.

Inventor： Cheng-Chen LIN ,  Hung-Shuo CHEN ,  Tzu-Chieh KUO

IPC: G02B13/00 ,  G02B9/60 ,  G02B7/09 ,  G02B27/00 ,  G02B27/64 ,  H04N5/225 ,  H04N5/232

CPC classification number: G02B13/0045 ,  G02B7/09 ,  G02B9/60 ,  G02B13/02 ,  G02B27/0025 ,  G02B27/646 ,  H04N5/2253 ,  H04N5/23264

Abstract: A photographing optical lens system 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 and a fifth lens element. The first lens element has positive refractive power. The second lens element has negative refractive power. The fourth lens element with negative refractive power has an object-side surface being convex and an image-side surface being concave in a paraxial region thereof, wherein, either the object-side surface thereof, the image-side surface thereof or both the two surfaces thereof have at least one critical point in an off-axial region thereof, and either the object-side surface thereof, the image-side surface thereof or both the two surfaces thereof are aspheric.

公开(公告)号：US20240231046A1

公开(公告)日：2024-07-11

申请号：US18615886

申请日：2024-03-25

Applicant: LARGAN PRECISION CO., LTD.

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

IPC: G02B9/64 ,  G02B13/00 ,  G02B15/14 ,  G02B27/00

CPC classification number: G02B9/64 ,  G02B13/0045 ,  G02B27/0025 ,  G02B15/1461

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.