公开(公告)号：US10466442B2

公开(公告)日：2019-11-05

申请号：US16007901

申请日：2018-06-13

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Chun-Yen Chen ,  Shu-Yun Yang

IPC: G02B9/34 ,  G02B13/18 ,  G02B13/14

Abstract: An electronic device includes a lens system including four lens elements. the four 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 and a fourth lens element. The second lens element has negative refractive power. The fourth lens element has positive refractive power. At least one surface of the four lens elements has at least one inflection point. A projection device and a detecting module of the electronic device including the lens system are also disclosed.

公开(公告)号：US10310221B2

公开(公告)日：2019-06-04

申请号：US15689236

申请日：2017-08-29

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Lin-Yao Liao ,  Hsin-Hsuan Huang ,  Shu-Yun Yang

IPC: G02B13/18 ,  G02B3/02 ,  G02B13/00 ,  G02B9/34 ,  G02B13/04 ,  G02B27/00

Abstract: This invention provides an optical lens assembly including, in order from an object side to an image side: a first lens element with negative refractive power having an image-side surface being concave in a paraxial region thereof; a second lens element having positive refractive power; a third lens element having an object-side surface being concave in a paraxial region thereof; and a fourth lens element 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 thereof having at least one convex shape in an off-axis region thereof; wherein the optical lens assembly has a total of four lens elements. With such configuration, the optical lens assembly is characterized by a reduced size and a wide field of view.

公开(公告)号：US10215962B2

公开(公告)日：2019-02-26

申请号：US15598070

申请日：2017-05-17

Applicant: LARGAN Precision Co., Ltd.

Inventor： Ssu-Hsin Liu ,  Shu-Yun Yang

IPC: G02B9/62 ,  G02B13/00 ,  G02B13/04

Abstract: An optical imaging lens 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. The first lens element has negative refractive power. The third lens element has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fourth lens element has positive refractive power. The fifth lens element has negative refractive power. The sixth lens element has positive refractive power.

公开(公告)号：US09798105B2

公开(公告)日：2017-10-24

申请号：US15131844

申请日：2016-04-18

Applicant: Largan Precision Co., Ltd.

Inventor： Hsin-Hsuan Huang ,  Shu-Yun Yang

IPC: G02B9/34 ,  G02B13/00 ,  H04N5/232 ,  G02B27/00 ,  H04N5/225

CPC classification number: G02B9/34 ,  G02B13/004 ,  G02B13/06 ,  G02B27/0025

Abstract: An imaging 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 and a fourth lens element. The first lens element with negative refractive power has an image-side surface being concave 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 has negative refractive power. The imaging lens system has a total of four lens elements, and the imaging lens system further includes an aperture stop disposed between the second lens element and the third lens element.

公开(公告)号：US12050366B2

公开(公告)日：2024-07-30

申请号：US18241319

申请日：2023-09-01

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Che Hsueh ,  Shu-Yun Yang

IPC: G02B9/62 ,  G02B13/00 ,  G02B13/06 ,  G02B5/00 ,  G02B27/00

CPC classification number: G02B9/62 ,  G02B13/0045 ,  G02B13/06 ,  G02B5/005 ,  G02B13/006 ,  G02B27/0025

Abstract: The present disclosure provides an optical imaging lens assembly comprising, in order from an object side to an image side: a first lens element having negative refractive power; a second lens element with negative 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; a third lens element having positive refractive power; a fourth lens element having positive refractive power; a fifth lens element having positive refractive power; and a sixth lens element; wherein the optical imaging lens assembly has a total of six lens elements. With such configuration, the optical imaging lens assembly of the present disclosure is characterized by a wide field of view, a compact size and high image quality.

公开(公告)号：US11953654B2

公开(公告)日：2024-04-09

申请号：US17460427

申请日：2021-08-30

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Che Hsueh ,  Hsin-Hsuan Huang ,  Shu-Yun Yang

IPC: G02B13/00 ,  G02B9/34 ,  G02B27/01

CPC classification number: G02B13/004 ,  G02B9/34 ,  G02B2027/011 ,  G02B2027/0123 ,  G02B2027/0138 ,  G02B2027/015 ,  G02B2027/0152 ,  G02B27/017 ,  G02B27/0172 ,  G02B2027/0178

Abstract: An image capturing lens system includes, 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 and an image-side surface being concave in a paraxial region thereof, a second lens element with negative refractive power having an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof, a third lens element with positive refractive power having an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof, and a fourth lens element with negative 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.

公开(公告)号：US11914106B2

公开(公告)日：2024-02-27

申请号：US17011028

申请日：2020-09-03

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Chen Lin ,  Hsin-Hsuan Huang ,  Shu-Yun Yang

IPC: G02B13/00 ,  G02B13/02 ,  G02B5/00 ,  G02B27/00

CPC classification number: G02B13/0045 ,  G02B5/00 ,  G02B13/0065 ,  G02B13/02 ,  G02B27/0025

Abstract: A photographing optical lens assembly includes, in order from an object side to an image side along an optical axis, 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 third lens element has an object-side surface being convex in a paraxial region thereof.

公开(公告)号：US11846826B2

公开(公告)日：2023-12-19

申请号：US17249182

申请日：2021-02-23

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Lin-An Chang ,  Ming-Ta Chou ,  Shu-Yun Yang ,  Cheng-Feng Lin

IPC: G02B7/09 ,  G02B7/02 ,  G03B13/36 ,  G03B5/00 ,  G03B30/00 ,  G02B27/64

CPC classification number: G02B7/09 ,  G02B7/021 ,  G02B27/646 ,  G03B5/00 ,  G03B13/36 ,  G03B30/00 ,  G03B2205/0007

Abstract: An imaging lens assembly module includes an imaging lens element set, a lens carrier and a light blocking structure. The imaging lens element set has an optical axis. At least one lens element of the lens elements is disposed in the lens carrier. The light blocking structure includes a light blocking opening. The optical axis passes through the light blocking opening, and the light blocking opening includes at least two arc portions and a shrinking portion. Each of the arc portions has a first curvature radius for defining a maximum diameter of the light blocking opening. The shrinking portion is connected to the arc portions for forming the light blocking opening into a non-circular shape. The shrinking portion includes at least one protruding arc which extends and shrinks gradually from the shrinking portion to the optical axis, and the protruding arc has a second curvature radius.

公开(公告)号：US11422340B2

公开(公告)日：2022-08-23

申请号：US17125769

申请日：2020-12-17

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen Chen ,  Shu-Yun Yang

IPC: G02B13/00 ,  G02B13/14 ,  G02B9/34 ,  G02B13/18

Abstract: An electronic device includes a lens system including four lens elements. the four 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 and a fourth lens element. The second lens element has negative refractive power. The fourth lens element has positive refractive power. At least one surface of the four lens elements has at least one inflection point. A projection device and a detecting module of the electronic device including the lens system are also disclosed.

公开(公告)号：US10996444B2

公开(公告)日：2021-05-04

申请号：US16275639

申请日：2019-02-14

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Shu-Yun Yang ,  Hsin-Hsuan Huang

IPC: G02B13/18 ,  G02B13/00 ,  G02B9/64 ,  G02B13/06 ,  G02B27/00 ,  G02B13/04 ,  G02B5/00

Abstract: A photographing optical lens assembly includes seven lens elements, the seven 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 and a seventh lens element. The first lens element has negative refractive power. The second lens element has negative refractive power. The third lens element has an object-side surface being concave in a paraxial region thereof. The fourth lens element has an image-side surface being convex in a paraxial region thereof.