公开(公告)号：US10917547B2

公开(公告)日：2021-02-09

申请号：US16745556

申请日：2020-01-17

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Hua Tsai ,  Ming-Ta Chou

IPC: H04N5/225 ,  G02B3/00 ,  G02B7/02 ,  G02B13/00 ,  G02B13/16

Abstract: A plastic barrel including an object-end portion, a holder portion, and a tube portion is proposed. The object-end portion includes an outer object-end surface, an object-end hole, and an inner annular object-end surface. A part of the inner annular object-end surface is connected with the outer object-end surface and surrounding the object-end hole. The holder portion includes a bottom surface, a bottom hole, and an outer bottom side. The bottom surface surrounds the bottom hole and is connected with the outer bottom side. The holder portion further includes cut traces formed by partially removing gate portions. The tube portion includes inner annular surfaces and connects the object-end portion with the holder portion.

公开(公告)号：US10754119B2

公开(公告)日：2020-08-25

申请号：US16180112

申请日：2018-11-05

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Hsiang-Chi Tang ,  Ming-Ta Chou ,  Ruei-Yang Luo

IPC: G02B7/02 ,  H04N5/225 ,  G02B13/00

Abstract: An imaging lens assembly has an optical axis and includes a plastic barrel, a lens set and a retaining element. The plastic barrel includes a first channel and a second channel. The lens set is disposed in the plastic barrel and includes at least one adjustable lens element, wherein an outer diameter surface of the adjustable lens element includes a plurality of axial rotation structures, each of the axial rotation structures is in a protruding strip shape, and at least one of the axial rotation structures is disposed correspondingly to the second channel of the plastic barrel and exposed. The retaining element is disposed in the plastic barrel and includes an anti-releasing structure, which is disposed correspondingly to the first channel of the plastic barrel to avoid the lens set being released from the plastic barrel.

公开(公告)号：US10587788B2

公开(公告)日：2020-03-10

申请号：US16543673

申请日：2019-08-19

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Hua Tsai ,  Ming-Ta Chou

IPC: H04N5/225 ,  G02B3/00 ,  G02B7/02 ,  G02B13/00 ,  G02B13/16

Abstract: A plastic barrel including an object-end portion, a holder portion, and a tube portion is proposed. The object-end portion includes an outer object-end surface, an object-end hole, and an inner annular object-end surface. A part of the inner annular object-end surface is connected with the outer object-end surface and surrounding the object-end hole. The holder portion includes a bottom surface, a bottom hole, and an outer bottom side. The bottom surface surrounds the bottom hole and is connected with the outer bottom side. The holder portion further includes cut traces formed by partially removing gate portions. The tube portion includes inner annular surfaces and connects the object-end portion with the holder portion.

公开(公告)号：US10564383B2

公开(公告)日：2020-02-18

申请号：US15687708

申请日：2017-08-28

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Ming-Ta Chou

IPC: G02B7/02 ,  G02B27/00 ,  G02B13/00 ,  G02B1/04

Abstract: An imaging lens set includes a plastic lens element. The plastic lens element having a central axis includes an object-side surface and an image-side surface, wherein the image-side surface is located opposite to the object-side surface. Each of the object-side surface and the image-side surface includes an effective optical section and a lens peripheral section in order from the central axis to an edge of the plastic lens element. The effective optical section is for being passed through by an imaging light and aspheric. The lens peripheral section surrounds the effective optical section. At least one of the lens peripheral section of the object-side surface and the lens peripheral section of the image-side surface includes at least one annular groove structure, wherein the annular groove structure includes a plurality of stepped surfaces and is not in contact with the optical elements.

公开(公告)号：US10539804B2

公开(公告)日：2020-01-21

申请号：US15922037

申请日：2018-03-15

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Hsiang-Chi Tang ,  Cheng-Chen Lin ,  Ming-Ta Chou

IPC: G02B27/09 ,  G02B9/34 ,  H04N5/225

Abstract: An imaging lens assembly includes a plastic barrel and an imaging lens set. The plastic barrel includes an object-side aperture and a first annular surface. The imaging lens set includes a plurality of optical elements, wherein at least one of the optical elements is a plastic lens element, and the plastic lens element includes an effective optical portion, a peripheral portion, a second annular surface, and an object-side connecting surface. The peripheral portion is formed around the effective optical portion. The second annular surface is formed on an object-side surface of the plastic lens element and surrounds the effective optical portion. The object-side connecting surface is formed on the object-side surface of the plastic lens element and surrounds the effective optical portion, and the object-side connecting surface is connected with one of the optical elements disposed on an object side of the plastic lens element.

公开(公告)号：US20190384032A1

公开(公告)日：2019-12-19

申请号：US16558202

申请日：2019-09-02

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Feng Lin ,  Ming-Ta Chou

IPC: G02B7/02 ,  G02B1/04 ,  G02B1/10

Abstract: An imaging lens assembly includes a plastic barrel and a lens set, and the lens set is disposed in the plastic barrel. The plastic barrel includes an object-side outer surface, a first inner surface and a second inner surface. The lens set has an optical axis, and includes, in order from an object side to an image side thereof, at least one plastic lens element and a spacer. A light-absorbing coating is disposed on the plastic lens element. The spacer includes an object-side connecting surface and a relative surface. When the object-side connecting surface is connected with a neighboring object-side optical element, the relative surface is out of touch with the neighboring object-side optical element. There is an overlap between the second inner surface and the relative surface along a direction parallel to the optical axis.

公开(公告)号：US10444411B2

公开(公告)日：2019-10-15

申请号：US16369572

申请日：2019-03-29

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chih-Wen Hsu ,  Ming-Ta Chou

IPC: G02B9/00 ,  G02B5/00 ,  G02B7/02 ,  G02B13/00

Abstract: An optical lens assembly includes at least two lens elements and at least one light blocking sheet. Each of the lens elements includes a connecting structure for aligning the two lens elements. Each of the connecting structures includes a connecting surface and a circular conical surface, and a receiving space is formed between the two lens elements. A vertical distance between the receiving space and an optical axis is shorter than a vertical distance between each circular conical surface and the optical axis. The light blocking sheet is received in the receiving space and has a polygonal opening, and an outside diameter of the light blocking sheet is smaller than or equal to a minimum diameter of each circular conical surface.

公开(公告)号：US10422932B2

公开(公告)日：2019-09-24

申请号：US15677103

申请日：2017-08-15

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Ming-Ta Chou ,  Cheng-Feng Lin

IPC: G02B5/00 ,  G02B7/00 ,  G02B7/02 ,  G02B13/00

Abstract: The present disclosure provides a dual-molded circular optical element including an outer plastic peripheral portion and an inner sheet portion. The outer plastic peripheral portion locates at an outer annular surface of the circular optical element. The inner sheet portion is enclosed in the outer plastic peripheral portion, and the inner sheet portion forms a minimal central opening of the circular optical element. Two sides of the outer plastic peripheral portion are disposed with a flat plane, and each of the flat planes is perpendicular to a central axis of the circular optical element.

公开(公告)号：US10359598B2

公开(公告)日：2019-07-23

申请号：US15661202

申请日：2017-07-27

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Ming-Ta Chou

IPC: G02B7/02 ,  G02B13/00

Abstract: A plastic barrel includes an object-end portion, an image-end portion and a tube portion. The object-end portion includes an object-end surface and an object-end hole, wherein the object-end surface includes a plurality of annular grooves, which are disposed coaxially to a central axis, and each of the annular grooves includes a stepped surface. The image-end portion includes an image-end opening. The tube portion connects the object-end portion and the image-end portion.

公开(公告)号：US10317648B2

公开(公告)日：2019-06-11

申请号：US15996769

申请日：2018-06-04

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Ming-Ta Chou

IPC: G02B13/00 ,  G02B7/02 ,  G02B7/00 ,  G02B27/00

Abstract: A photographing module includes an imaging lens assembly. The imaging lens assembly includes a plurality of lens elements, wherein one of the lens elements is a plastic lens element. At least one surface of an object-side surface and an image-side surface of the plastic lens element includes an effective optical portion and a peripheral portion. The peripheral portion surrounds the effective optical portion, and includes a plurality of rib structures, a first fitting section and an isolation section. Each of the rib structures has a strip shape along a radial direction of an optical axis of the imaging lens assembly, and the rib structures are arranged around the effective optical portion. The first fitting section surrounds the effective optical portion, and is connected to another one of the lens elements adjacent to the surface. The isolation section is disposed between the rib structures and the first fitting section.