公开(公告)号：US09958645B2

公开(公告)日：2018-05-01

申请号：US15166692

申请日：2016-05-27

Applicant: Largan Precision Co., Ltd.

Inventor： Chun-Yen Chen ,  Lin-Yao Liao ,  Wei-Yu Chen

IPC: G02B13/00 ,  G02B13/18

CPC classification number: G02B13/0045 ,  G02B13/18

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

公开(公告)号：US12019306B2

公开(公告)日：2024-06-25

申请号：US17382049

申请日：2021-07-21

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yi-Hsiang Chuang ,  Kuan Chun Wang ,  Chun-Yen Chen ,  Kuan-Ting Yeh ,  Yu-Chun Ke ,  Tzu-Chieh Kuo

IPC: G02B9/62 ,  G02B13/00

CPC classification number: G02B9/62 ,  G02B13/0045

Abstract: An optical imaging system 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 negative refractive power, and the object-side surface of the first lens element is concave in a paraxial region thereof. The image-side surface of the second lens element is concave in a paraxial region thereof. The fourth lens element has negative refractive power. The image-side surface of the sixth lens element is concave in a paraxial region thereof and has at least one critical point in an off-axis region thereof.

公开(公告)号：US11740439B2

公开(公告)日：2023-08-29

申请号：US17373745

申请日：2021-07-12

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen Chen ,  Cheng-Chen Lin ,  Hsin-Hsuan Huang

IPC: G02B13/00 ,  G02B13/04 ,  G02B9/62 ,  H04N23/67

CPC classification number: G02B13/0045 ,  G02B9/62 ,  G02B13/04 ,  H04N23/671

Abstract: A photographing 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. The second lens element has positive refractive power. The third lens element has an image-side surface being concave in a paraxial region thereof. The sixth lens element has 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 inflection point.

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：US11249282B2

公开(公告)日：2022-02-15

申请号：US16299381

申请日：2019-03-12

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Chen Lin ,  Chun-Yen Chen ,  Yu-Tai Tseng ,  Kuan-Ting Yeh ,  Wei-Yu Chen

IPC: G02B3/02 ,  G02B13/18 ,  G02B13/00 ,  G02B9/64

Abstract: A photographing optical lens assembly includes seven lens elements, the seven lens elements 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, wherein the first lens element has positive refractive power, the fifth lens element with negative refractive power has image-side surface being concave in a paraxial region thereof, the sixth lens element has an image-side surface being convex in a paraxial region thereof, and the seventh lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface of the seventh lens element includes at least one convex critical point in an off-axis region thereof.

公开(公告)号：US10539760B2

公开(公告)日：2020-01-21

申请号：US15865163

申请日：2018-01-08

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen Chen ,  Kuan-Ting Yeh ,  Shu-Yun Yang

IPC: G02B9/62 ,  G02B13/00

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, a fourth lens element, a fifth lens element and a sixth 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 with negative refractive power has an object-side surface being concave in a paraxial region thereof. 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 positive refractive power. The fifth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The sixth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof.

公开(公告)号：US10520705B2

公开(公告)日：2019-12-31

申请号：US15861375

申请日：2018-01-03

Applicant: LARGAN Precision Co., Ltd.

Inventor： Hsiang-Chi Tang ,  Cheng-Chen Lin ,  Chun-Yen Chen ,  Hsin-Hsuan Huang

IPC: G02B9/62 ,  G02B13/00 ,  H04N5/225 ,  G02B27/00

Abstract: An 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 sixth lens element has an image-side surface being concave in a paraxial region thereof. The image-side surface of the sixth lens element has at least one inflection point.

公开(公告)号：US20190361199A1

公开(公告)日：2019-11-28

申请号：US16538907

申请日：2019-08-13

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Po-Lun Hsu ,  Chun-Yen Chen ,  Chun-Che Hsueh ,  Wei-Yu Chen

IPC: G02B9/64 ,  G02B27/00

Abstract: An optical photographing 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. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The third lens element has positive refractive power. The seventh lens element has an image-side surface being concave in a paraxial region thereof and including at least one convex shape in an off-axis region thereof. An object-side surface and the image-side surface of the seventh lens element are aspheric.

公开(公告)号：US10444475B2

公开(公告)日：2019-10-15

申请号：US16259629

申请日：2019-01-28

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen Chen ,  Wei-Yu Chen

IPC: G02B13/00 ,  G02B9/62

Abstract: An optical image 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 first lens element with positive refractive power has an object-side surface being convex. The second lens element with positive refractive power has an image-side surface being convex. The fourth lens element has an image-side surface being concave. The fifth lens element with positive refractive power has an object-side surface being concave and an image-side surface being convex. The sixth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof and including at least one convex shape in an off-axial region thereof. The two surfaces of each of the fifth lens element and the sixth lens element are aspheric.

公开(公告)号：US10215955B2

公开(公告)日：2019-02-26

申请号：US15479616

申请日：2017-04-05

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Chen Lin ,  Chun-Yen Chen ,  Chun-Che Hsueh ,  Wei-Yu Chen

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

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