公开(公告)号：US10185125B2

公开(公告)日：2019-01-22

申请号：US15470502

申请日：2017-03-27

Applicant: LARGAN Precision Co., Ltd.

Inventor： Cheng-Chen Lin ,  Chun-Yen Chen ,  Yu-Tai Tseng ,  Hung-Shuo Chen ,  Wei-Yu Chen

IPC: G02B13/00 ,  G02B9/60 ,  G02B5/20

Abstract: A photographing optical lens system includes five 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 and a fifth lens element. The second lens element has positive refractive power. The third lens element has negative refractive power. 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, wherein the image-side surface thereof has at least one convex critical point in an off-axial region thereof, the object-side surface and the image-side surface thereof are aspheric.

公开(公告)号：US10031318B2

公开(公告)日：2018-07-24

申请号：US15201326

申请日：2016-07-01

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen Chen ,  Yu-Tai Tseng ,  Wei-Yu Chen ,  Chun-Che Hsueh

IPC: G02B13/18 ,  G02B9/62 ,  G02B13/00 ,  G02B3/04 ,  G02B27/00 ,  G02B5/00

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 first lens element with positive refractive power has an object-side surface being convex. The second lens element has negative refractive power. At least one of two surfaces of the fourth lens element has at least one inflection point, and the two surfaces thereof are aspheric. The fifth lens element has an object-side surface being convex and an image-side surface having at least one inflection point, and the two surfaces thereof are aspheric. The sixth lens element has an image-side surface being concave, wherein the image-side surface of the sixth lens element has at least one convex shape in off-axial region, and the two surfaces thereof are aspheric.

公开(公告)号：US20180074295A1

公开(公告)日：2018-03-15

申请号：US15454007

申请日：2017-03-09

Applicant: LARGAN PRECISION CO., LTD.

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

IPC: G02B13/00 ,  G02B9/62 ,  G02B5/20

CPC classification number: G02B13/0045 ,  G02B5/208 ,  G02B9/62

Abstract: An imaging optical lens system 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, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has positive refractive power. The third lens element has an image-side surface being concave in a paraxial region thereof. The fifth lens element has an object-side surface and an image-side surface being both aspheric. The sixth lens element has an image-side surface being concave in a paraxial region thereof, wherein an object-side surface and the image-side surface of the sixth lens element are both aspheric, and the image-side surface of the sixth lens element includes at least one convex critical point in an off-axial region thereof.

公开(公告)号：US09823445B2

公开(公告)日：2017-11-21

申请号：US15186362

申请日：2016-06-17

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen Chen ,  Shu-Yun Yang

IPC: G02B13/18 ,  G02B3/02 ,  G02B9/62 ,  G02B13/00 ,  G02B9/60 ,  G02B1/04

CPC classification number: G02B13/0045 ,  G02B1/041 ,  G02B9/60 ,  G02B9/62 ,  G02B13/006 ,  G02B13/06

Abstract: An imaging 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 has negative refractive power. The second lens element has negative refractive power. The third lens element has negative refractive power. The imaging optical lens assembly has a total of six lens elements.

公开(公告)号：US12265205B2

公开(公告)日：2025-04-01

申请号：US17718445

申请日：2022-04-12

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen Chen ,  Tzu-Chieh Kuo

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

Abstract: An optical imaging system assembly 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. The second lens element has negative refractive power. An object-side surface of the third lens element is convex in a paraxial region thereof. An image-side surface of the fifth lens element is convex in a paraxial region thereof. The sixth lens element has negative refractive power, an object-side surface of the sixth lens element is convex in a paraxial region thereof, an image-side surface of the sixth lens element is concave in a paraxial region thereof. The seventh lens element has negative refractive power.

公开(公告)号：US11971609B2

公开(公告)日：2024-04-30

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 ,  G02B15/14

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.

公开(公告)号：US11656443B2

公开(公告)日：2023-05-23

申请号：US17933867

申请日：2022-09-21

Applicant: LARGAN PRECISION CO., LTD.

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

IPC: G02B13/00 ,  G02B9/64

CPC classification number: G02B13/0045 ,  G02B9/64

Abstract: A 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 second lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The seventh lens element has 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 seventh lens element includes at least one convex shape in an off-axis region thereof. The object-side surface and the image-side surface of the seventh lens element are aspheric.

公开(公告)号：US11487091B2

公开(公告)日：2022-11-01

申请号：US17064644

申请日：2020-10-07

Applicant: LARGAN PRECISION CO., LTD.

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

IPC: G02B13/00 ,  G02B9/64

Abstract: A 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 second lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The seventh lens element has 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 seventh lens element includes at least one convex shape in an off-axis region thereof. The object-side surface and the image-side surface of the seventh lens element are aspheric.

公开(公告)号：US11333861B2

公开(公告)日：2022-05-17

申请号：US16779751

申请日：2020-02-03

Applicant: LARGAN PRECISION CO., LTD.

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

IPC: G02B13/00 ,  G02B13/18 ,  G02B9/64 ,  G02B7/09 ,  G02B27/64

Abstract: An image capturing 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 fifth lens element with positive refractive power 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 sixth lens element has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The seventh lens element has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, and the image-side surface thereof includes at least one convex shape in an off-axis region thereof.

公开(公告)号：US11237360B2

公开(公告)日：2022-02-01

申请号：US17005503

申请日：2020-08-28

Applicant: LARGAN PRECISION CO., LTD.

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

IPC: G02B9/62 ,  G02B13/00 ,  G02B27/64

Abstract: An imaging optical lens assembly 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, 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 has positive refractive power. The fourth 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 in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof and including at least one convex critical point in an off-axis region thereof.