公开(公告)号：US11573400B2

公开(公告)日：2023-02-07

申请号：US16686125

申请日：2019-11-16

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Ming-Shun Chang ,  Heng Yi Su ,  Ming-Ta Chou

IPC: G02B7/02 ,  G02B13/00 ,  G02B3/04 ,  G03B17/12 ,  G02B9/60 ,  G02B9/64 ,  G03B9/54

Abstract: An imaging lens system includes a plastic lens element. The plastic lens element includes an optical effective portion and an outer ring portion. The optical axis passes through the optical effective portion. The outer ring portion surrounds the optical effective portion and includes an annular groove structure, a conical surface, a flat abutting portion and a full-circle connecting portion. The annular groove structure is tapered off. Each of the conical surface and the flat abutting portion is located closer to the optical effective portion than the annular groove structure. The flat abutting portion is in physical contact with an optical element. The full-circle connecting portion is connected to the annular groove structure and located farther away from the optical effective portion than the annular groove structure. The annular groove structure has an annular bottom end surface extending in a direction substantially perpendicular to the optical axis.

公开(公告)号：US11489991B2

公开(公告)日：2022-11-01

申请号：US17328794

申请日：2021-05-24

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Jyun-Jia Cheng ,  Heng Yi Su ,  Ming-Ta Chou ,  Chen-Yi Huang

IPC: H04N5/225 ,  G02B5/22 ,  G02B1/04 ,  G03B17/12

Abstract: An imaging lens system includes a plastic lens element, a lens barrel and a light-absorbing coating layer. The plastic lens element is accommodated in the lens barrel and has an outer annular surface. The lens barrel includes a plate portion and a lateral wall portion. An optical axis of the imaging lens system passes through a light-passable hole of the plate portion. The lateral wall portion is connected to the plate portion and extends along a direction substantially parallel to the optical axis. The light-absorbing coating layer has an inner surface and an outer surface. The inner surface faces and is fixed on the outer annular surface of the plastic lens element. The outer surface is located opposite to the inner surface and in physical contact with the lateral portion of the lens barrel.

公开(公告)号：US11665419B2

公开(公告)日：2023-05-30

申请号：US17954224

申请日：2022-09-27

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Jyun-Jia Cheng ,  Heng Yi Su ,  Ming-Ta Chou ,  Chen-Yi Huang

IPC: H04N23/55 ,  G02B5/22 ,  G02B1/04 ,  G03B17/12

CPC classification number: H04N23/55 ,  G02B1/041 ,  G02B5/22 ,  G03B17/12

Abstract: An imaging lens system includes a plastic lens element, a lens barrel and a light-absorbing layer. The plastic lens element is accommodated in the lens barrel and has an outer annular surface. The lens barrel includes a plate portion and a lateral wall portion. An optical axis of the imaging lens system passes through a light-passable hole of the plate portion. The lateral wall portion is connected to the plate portion and extends along a direction substantially parallel to the optical axis. The light-absorbing layer has an inner surface and an outer surface. The inner surface faces and is fixed on the outer annular surface of the plastic lens element. The outer surface is located opposite to the inner surface and in physical contact with the lateral portion of the lens barrel.

公开(公告)号：US12066682B2

公开(公告)日：2024-08-20

申请号：US18089198

申请日：2022-12-27

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Ming-Shun Chang ,  Heng Yi Su ,  Ming-Ta Chou

IPC: G02B3/04 ,  G02B7/02 ,  G03B9/54

CPC classification number: G02B7/021 ,  G02B3/04 ,  G03B9/54

Abstract: An imaging lens system includes a plastic lens element. The plastic lens element includes an optical effective portion and an outer ring portion. The optical axis passes through the optical effective portion. The outer ring portion surrounds the optical effective portion and includes an annular groove structure, a conical surface, a flat abutting portion and a full-circle connecting portion. The annular groove structure is tapered off. Each of the conical surface and the flat abutting portion is located closer to the optical effective portion than the annular groove structure. The flat abutting portion is in physical contact with an optical element. The full-circle connecting portion is connected to the annular groove structure and located farther away from the optical effective portion than the annular groove structure. The annular groove structure has an annular bottom end surface extending in a direction substantially perpendicular to the optical axis.