公开(公告)号：US11579412B2

公开(公告)日：2023-02-14

申请号：US16744424

申请日：2020-01-16

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Che Hsueh ,  Hung-Shuo Chen ,  Kuan Chun Wang ,  Wei-Yu Chen

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

Abstract: A photographing lens assembly includes a total of 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 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 eighth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof. At least one lens element of the photographing lens assembly has at least one lens surface having at least one inflection point.

公开(公告)号：US11415780B2

公开(公告)日：2022-08-16

申请号：US16845125

申请日：2020-04-10

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Dung-Yi Hsieh ,  Chun-Che Hsueh ,  Wei-Yu Chen

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

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

公开(公告)号：US20220128802A1

公开(公告)日：2022-04-28

申请号：US17569917

申请日：2022-01-06

Applicant: LARGAN PRECISION CO., LTD

Inventor： Chun-Che Hsueh ,  Wei-Yu Chen

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

Abstract: This disclosure provides an image capturing optical lens assembly including, in order from an object side to an image side: a first lens element with 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 with refractive power having an image-side surface being concave in a paraxial region thereof; a fourth lens element with refractive power having an image-side surface being concave in a paraxial region thereof, wherein both surfaces thereof being aspheric; a fifth lens element with refractive power having an object-side surface being concave in a paraxial region thereof; and a sixth lens element with refractive power having an image-side surface being concave in a paraxial region thereof, wherein both surfaces thereof being aspheric, and the image-side surface having at least one convex shape in an off-axis region thereof.

公开(公告)号：US11194127B2

公开(公告)日：2021-12-07

申请号：US16377385

申请日：2019-04-08

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen Chen ,  Wei-Yu Chen

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

Abstract: A photographing 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 fifth lens element and a sixth lens element. The first lens element with negative refractive power has an object-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 includes at least one convex shape in an off-axis region thereof.

公开(公告)号：US11067778B2

公开(公告)日：2021-07-20

申请号：US16849012

申请日：2020-04-15

Applicant: LARGAN PRECISION CO., LTD.

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

IPC: G02B13/00 ,  G02B9/64

Abstract: An imaging optical lens assembly includes seven lens elements, the seventh 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 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 seventh lens element has an image-side surface being concave in a paraxial region thereof and having a critical point in an off-axis region thereof. The image-side surface and an object-side surface of the seventh lens element are both aspheric.

公开(公告)号：US10921567B2

公开(公告)日：2021-02-16

申请号：US16676312

申请日：2019-11-06

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Wei-Yu Chen

IPC: G02B9/64 ,  G02B13/00 ,  G02B5/00 ,  G02B5/20 ,  G02B27/00 ,  G02B3/04

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, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element. The second lens element has positive refractive power. The eighth lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface of the eighth lens element has at least one convex shape in an off-axis region thereof, and both an object-side surface and the image-side surface thereof are aspheric. The photographing optical lens system has a total of eight lens elements. An air gap in a paraxial region is located between every two lens elements of the photographing optical lens system that are adjacent to each other.

公开(公告)号：US10795128B2

公开(公告)日：2020-10-06

申请号：US16051770

申请日：2018-08-01

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Tung-Yi Hsieh ,  Wei-Yu Chen

IPC: G02B13/00 ,  G02B9/60 ,  G02B13/06

Abstract: An image capturing 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 and a fifth lens element. The first lens element has negative refractive power. The second lens element has an object-side surface being convex. The fourth lens element has an image-side surface being convex. The fifth lens element has negative refractive power. A total number of the lens elements in the image capturing optical lens assembly is five.

公开(公告)号：US10698179B2

公开(公告)日：2020-06-30

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 ,  G02B13/00

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：US10663693B2

公开(公告)日：2020-05-26

申请号：US16026370

申请日：2018-07-03

Applicant: LARGAN PRECISION CO., LTD.

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

IPC: G02B13/00 ,  G02B9/64

Abstract: An imaging optical lens assembly includes seven lens elements, the seventh 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 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 seventh lens element has an image-side surface being concave in a paraxial region thereof and having a critical point in an off-axis region thereof. The image-side surface and an object-side surface of the seventh lens element are both aspheric.

公开(公告)号：US10656389B2

公开(公告)日：2020-05-19

申请号：US16252788

申请日：2019-01-21

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Dung-Yi Hsieh ,  Chun-Che Hsueh ,  Wei-Yu Chen

IPC: G02B9/60 ,  G02B13/00 ,  H04N5/225 ,  G02B27/00

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