公开(公告)号：US10895716B2

公开(公告)日：2021-01-19

申请号：US16174085

申请日：2018-10-29

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Tzu-Chieh Kuo

IPC: G02B13/00 ,  G02B9/62 ,  G02B5/00 ,  G02B13/18 ,  G02B3/04

Abstract: An electronic device includes an optical system. The optical system includes six lens elements, and the six lens elements are, in order from an outer side to an inner 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 outer-side surface facing toward the outer side and an inner-side surface facing toward the inner side. Each of at least three lens surfaces of the six lens elements is aspheric and has at least one inflection point.

公开(公告)号：US10732391B2

公开(公告)日：2020-08-04

申请号：US15790371

申请日：2017-10-23

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ting Yeh ,  Tzu-Chieh Kuo

IPC: G02B3/02 ,  G02B13/18 ,  G02B13/02 ,  G02B9/60 ,  G02B13/00

Abstract: An image system lens assembly includes five lens elements, the five lens elements being, in order from an object side to an image side: a first lens element; a second lens element having an object side-surface being convex in a paraxial region thereof; a third lens element having negative refractive power; a fourth lens element with positive refractive power having an image-side surface being convex in a paraxial region thereof; and a fifth lens element having negative refractive power.

公开(公告)号：US10437017B2

公开(公告)日：2019-10-08

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 ,  G02B7/09 ,  G02B9/60 ,  G02B27/00 ,  G02B27/64 ,  H04N5/225 ,  H04N5/232 ,  G02B13/02

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：US10330894B2

公开(公告)日：2019-06-25

申请号：US15841717

申请日：2017-12-14

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Che Hsueh ,  Tzu-Chieh Kuo

IPC: G02B3/02 ,  G02B13/00 ,  G02B27/00

Abstract: An imaging optical lens includes six lens elements, the six lens elements being, in order from an object side to an image side: a first lens element; a second lens element having an image-side surface being concave in a paraxial region thereof, a third lens element having an object-side surface being convex in a paraxial region thereof, a fourth lens element, a fifth lens element, and a sixth lens element having negative refractive power.

公开(公告)号：US10306031B2

公开(公告)日：2019-05-28

申请号：US15596131

申请日：2017-05-16

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu-Tai Tseng ,  Tzu-Chieh Kuo

IPC: G02B13/18 ,  G02B3/02 ,  H04M1/02 ,  H04N5/225 ,  G02B7/08 ,  G02B13/00 ,  G02B27/64 ,  G02B27/01

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：US10302916B2

公开(公告)日：2019-05-28

申请号：US15589096

申请日：2017-05-08

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：US20190056570A1

公开(公告)日：2019-02-21

申请号：US15790371

申请日：2017-10-23

Applicant: Largan Precision Co., Ltd.

Inventor： Kuan-Ting Yeh ,  Tzu-Chieh Kuo

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

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

Abstract: An image system lens assembly includes five lens elements, the five lens elements being, in order from an object side to an image side: a first lens element; a second lens element having an object side-surface being convex in a paraxial region thereof; a third lens element having negative refractive power; a fourth lens element with positive refractive power having an image-side surface being convex in a paraxial region thereof; and a fifth lens element having negative refractive power.