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公开(公告)号：US20200073087A1
公开(公告)日：2020-03-05
申请号：US16674244
申请日：2019-11-05
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hsuan-Chin HUANG , Hsiang-Chi TANG , Ming-Ta CHOU
Abstract: A plastic optical lens assembly includes a first lens element, a second lens element and a cementing glue coating. A first spacing section is located between a first optical effective portion and a first engaging structure. A second optical effective portion is disposed correspondingly to the first optical effective portion. A second spacing section is located between the second optical effective portion and a second engaging structure. The first engaging structure is engaged with the second engaging structure. A reference space is between the first and the second spacing section. The cementing glue coating is at least disposed between the first and the second optical effective portions, and the first and the second lens elements are cemented by the cementing glue coating.
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公开(公告)号：US20230045146A1
公开(公告)日：2023-02-09
申请号：US17517474
申请日：2021-11-02
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hsuan-Chin HUANG , Lin An CHANG , Ming-Ta CHOU , Chun-Hua TSAI
Abstract: An imaging lens system includes a lens barrel element and an imaging lens assembly disposed on the lens barrel element and including a first imaging lens element, a spacer element and a second imaging lens element. The spacer element has a second object-side contact surface corresponding to a first image-side contact surface of the first imaging lens element. The second imaging lens element has a third object-side contact surface corresponding to a second image-side contact surface of the spacer element. The lens barrel element and the spacer element form a buffer structure closer to an optical axis than the first image-side contact surface and including a first gap and a second gap located closer to the optical axis than the first gap. The first gap overlaps the third object-side contact surface in a direction parallel to the optical axis. A step difference is between the first and second gaps.
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公开(公告)号：US20180129017A1
公开(公告)日：2018-05-10
申请号：US15465786
申请日：2017-03-22
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hsuan-Chin HUANG , Hsiang-Chi TANG , Ming-Ta CHOU
CPC classification number: G02B13/006 , G02B1/041 , G02B7/022 , G02B7/025 , G02B13/0045 , H04M1/0266
Abstract: A plastic optical lens assembly includes a first lens element, a second lens element and a cementing glue coating. A first spacing section is located between a first optical effective portion and a first engaging structure. A second optical effective portion is disposed correspondingly to the first optical effective portion. A second spacing section is located between the second optical effective portion and a second engaging structure. The first engaging structure is engaged with the second engaging structure. A reference space is between the first and the second spacing section. The cementing glue coating is at least disposed between the first and the second optical effective portions, and the first and the second lens elements are cemented by the cementing glue coating.
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公开(公告)号：US20250102770A1
公开(公告)日：2025-03-27
申请号：US18972534
申请日：2024-12-06
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hsuan-Chin HUANG , Lin An CHANG , Ming-Ta CHOU , Chun-Tang TSAI
Abstract: An imaging lens system includes a lens barrel element and an imaging lens assembly disposed on the lens barrel element and including a first imaging lens element, a spacer element and a second imaging lens element. The spacer element has a second object-side contact surface corresponding to a first image-side contact surface of the first imaging lens element. The second imaging lens element has a third object-side contact surface corresponding to a second image-side contact surface of the spacer element. The lens barrel element and the spacer element form a buffer structure closer to an optical axis than the first image-side contact surface and including a first gap and a second gap located closer to the optical axis than the first gap. The first gap overlaps the third object-side contact surface in a direction parallel to the optical axis. A step difference is between the first and second gaps.
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公开(公告)号：US20200073088A1
公开(公告)日：2020-03-05
申请号：US16674255
申请日：2019-11-05
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hsuan-Chin HUANG , Hsiang-Chi TANG , Ming-Ta CHOU
Abstract: A plastic optical lens assembly includes a first lens element, a second lens element and a cementing glue coating. A first spacing section is located between a first optical effective portion and a first engaging structure. A second optical effective portion is disposed correspondingly to the first optical effective portion. A second spacing section is located between the second optical effective portion and a second engaging structure. The first engaging structure is engaged with the second engaging structure. A reference space is between the first and the second spacing section. The cementing glue coating is at least disposed between the first and the second optical effective portions, and the first and the second lens elements are cemented by the cementing glue coating.
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Patent Agency Ranking
公开(公告)号：US20250004240A1
公开(公告)日：2025-01-02
申请号：US18674980
申请日：2024-05-27
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hsuan-Chin HUANG , Yu-Chen LAI , Pei-Chi CHANG , Ming-Ta CHOU
Abstract: A glass lens element includes an optical portion and a peripheral portion. The peripheral portion is away from an optical axis from the optical portion, and the peripheral portion includes a cylindrical surface, a first arc surface, a brim surface and a connecting surface. The first arc surface is connected to the cylindrical surface, and the first arc surface extends from the cylindrical surface. The brim surface and the first arc surface are disposed relatively to the cylindrical surface, and the brim surface extends and protrudes from the cylindrical surface towards a direction away from the first arc surface. The connecting surface is gradually close to the optical axis from the first arc surface towards a direction away from the brim surface, and the connecting surface is connected to the optical portion. The peripheral portion is smooth connected from the first arc surface towards the brim surface.
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公开(公告)号：US20230273411A1
公开(公告)日：2023-08-31
申请号：US18161970
申请日：2023-01-31
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Pei-Chi CHANG , Heng-Yi SU , Hsuan-Chin HUANG
IPC: G02B13/00
CPC classification number: G02B13/0055 , G03B30/00
Abstract: An imaging lens assembly includes a plurality of optical elements, an optical axis passing through the optical elements is defined, and the optical elements include at least one mixing optical element. The mixing optical element includes a glass effective optical portion and a plastic outer peripheral portion. The optical axis passes through the glass effective optical portion. The plastic outer peripheral portion surrounds and physically contacts the glass effective optical portion, and forms an aperture hole. The plastic outer peripheral portion has at least three recess structures arranged and disposed along a circumference direction around the optical axis. The recess structures extend from one of the object side and the image side of the imaging lens assembly to the other thereof along a direction parallel to the optical axis. Each of the recess structures includes an outer surface, an inner surface and two side surfaces.
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公开(公告)号：US20230236382A1
公开(公告)日：2023-07-27
申请号：US18151508
申请日：2023-01-09
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hsuan-Chin HUANG , Chen-Wei FAN , Ming-Ta CHOU
CPC classification number: G02B7/023 , G02B13/001 , G02B3/0037 , G02B3/04 , G02B7/028
Abstract: An imaging lens assembly includes a first lens element, a second lens element and a lens barrel, and an optical axis passes through the imaging lens assembly. One of the space adjusting structures is formed via a first peripheral portion of the first lens element and a plate portion of the lens barrel, the other one of the space adjusting structures is formed via the first peripheral portion of the first lens element and a second peripheral portion of the second lens element. Each of the space adjusting structures includes a frustum surface, a spatial frustum surface, a corresponding structure and a spatial layer. Each of the frustum surfaces and each of the spatial frustum surfaces are disposed on an object-side surface of the first peripheral portion and an object-side surface of the second peripheral portion, respectively.
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公开(公告)号：US20220334350A1
公开(公告)日：2022-10-20
申请号：US17810628
申请日：2022-07-04
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hsuan-Chin HUANG , Hsiang-Chi TANG , Ming-Ta CHOU
Abstract: A plastic optical lens assembly includes a first lens element, a second lens element and a cementing glue coating. A first spacing section is located between a first optical effective portion and a first engaging structure. A second optical effective portion is disposed correspondingly to the first optical effective portion. A second spacing section is located between the second optical effective portion and a second engaging structure. The first engaging structure is engaged with the second engaging structure. A reference space is between the first and the second spacing section. The cementing glue coating is at least disposed between the first and the second optical effective portions, and the first and the second lens elements are cemented by the cementing glue coating.
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公开(公告)号：US20180239114A1
公开(公告)日：2018-08-23
申请号：US15646978
申请日：2017-07-11
Applicant: LARGAN Precision Co., Ltd.
Inventor： Chun-Che HSUEH , Wei-Yu CHEN , Chun-Shan CHEN , Hsuan-Chin HUANG , Kuan-Ting YEH
CPC classification number: G02B13/0045 , G02B9/60 , H04N5/2254
Abstract: An optical photographing lens assembly includes five lens elements, 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 positive refractive power has a convex object-side surface in a paraxial region thereof. The second lens element with negative refractive power has a convex object-side surface and a concave image-side surface in a paraxial region thereof. The fourth lens element with positive refractive power has a convex image-side surface in a paraxial region thereof. The fifth lens element with negative refractive power has a concave image-side surface in a paraxial region thereof, wherein the image-side surface of the fifth lens element has at least one convex critical point in an off-axial region thereof, and two surfaces of the fifth lens element are both aspheric.
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