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公开(公告)号：US20250052933A1
公开(公告)日：2025-02-13
申请号：US18791623
申请日：2024-08-01
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Wei-Che TUNG , Chih-Wei CHENG , Chen-Wei FAN
Abstract: An imaging lens assembly includes a plurality of lens elements, a light path folding element and a sheet-like light blocking element. An optical axis is defined via the lens elements. The light path folding element includes an optical surface, and a total reflection of an imaging light of the imaging lens assembly occurs at least once on the optical surface. The sheet-like light blocking element is corresponding to the light path folding element, and the sheet-like light blocking element includes a first surface, a second surface and a microstructure layer. The first surface faces towards the optical surface. The second surface is disposed relatively to the first surface. The microstructure layer is at least disposed on the first surface, and protrusions are formed on the first surface via the microstructure layer. At least partial area between the microstructure layer and the optical surface has an air slit.
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公开(公告)号：US20240231033A1
公开(公告)日：2024-07-11
申请号：US18617804
申请日：2024-03-27
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Yu-Chen LAI , Chih-Wei CHENG , Ming-Ta CHOU , Ming-Shun CHANG
Abstract: An imaging lens assembly includes a plurality of optical elements and an accommodating assembly, wherein the accommodating assembly is for containing the optical elements. The accommodating assembly includes a conical-shaped light blocking sheet and a lens barrel. The conical-shaped light blocking sheet includes an out-side portion and a conical portion, and the conical portion is connected to the out-side portion. The conical portion includes a conical structure tapered from the out-side portion toward one of an object-side and an image-side along the optical axis. The lens barrel is disposed on one side of the conical portion. The optical elements include a most object-side optical element, a most image-side optical element and at least one optical element. The conical structure of the conical-shaped light blocking sheet is physically contacted with only one of the lens barrel, the most object-side optical element and the most image-side optical element.
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Patent Agency Ranking
公开(公告)号：US20220221623A1
公开(公告)日：2022-07-14
申请号：US17412433
申请日：2021-08-26
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chih-Wei CHENG , Yu-Chen LAI , Ming-Ta CHOU , Ming-Shun CHANG
Abstract: An imaging lens assembly has an optical axis, and includes a plurality of optical elements. The optical elements include a light blocking sheet, and the light blocking sheet includes a through hole surface, a first surface, a second surface, a peripheral surface and a plurality of basin structures. The through hole surface surrounds the optical axis. The first surface and the second surface are connected to and surround the through hole surface. The peripheral surface is connected to the first surface and the second surface, and the peripheral surface is farther from the optical axis than the through hole surface from the optical axis. The basin structures are arranged in interval and around the optical axis, each of the basin structures is caved in from the first surface to the second surface, and each of the basin structures protrudes on the second surface.
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公开(公告)号：US20220066119A1
公开(公告)日：2022-03-03
申请号：US17351423
申请日：2021-06-18
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Yu-Chen LAI , Chih-Wei CHENG , Ming-Ta CHOU , Ming-Shun CHANG
Abstract: An imaging lens assembly includes a plurality of optical elements and an accommodating assembly, wherein the accommodating assembly is for containing the optical elements. The accommodating assembly includes a conical-shaped light blocking sheet and a lens barrel. The conical-shaped light blocking sheet includes an out-side portion and a conical portion, and the conical portion is connected to the out-side portion. The conical portion includes a conical structure tapered from the out-side portion toward one of an object-side and an image-side along the optical axis. The lens barrel is disposed on one side of the conical portion. The optical elements include a most object-side optical element, a most image-side optical element and at least one optical element. The conical structure of the conical-shaped light blocking sheet is physically contacted with only one of the lens barrel, the most object-side optical element and the most image-side optical element.
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公开(公告)号：US20180138351A1
公开(公告)日：2018-05-17
申请号：US15434163
申请日：2017-02-16
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chih-Wen HSU , Chih-Wei CHENG , Ming-Ta CHOU
Abstract: A light blocking sheet includes a first outer layer, a second outer layer, an inner substrate layer and a central axis. The first outer layer includes a first opening. The second outer layer includes a second opening. The inner substrate layer is disposed between the first outer layer and the second outer layer. The inner substrate layer connects the first outer layer to the second outer layer, and the inner substrate layer includes a substrate opening. The central axis is coaxial with the first opening, the second opening and the substrate opening.
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公开(公告)号：US20250013038A1
公开(公告)日：2025-01-09
申请号：US18732776
申请日：2024-06-04
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chih-Wei CHENG , Sheng-Wen LIN , Ssu-Hsin LIU , Hsiu-Yi HSIAO , Ming-Ta CHOU
Abstract: An imaging lens assembly module includes an imaging lens element set, a light folding element and a plate-shaped light blocking element. The imaging lens element set has an optical axis, and includes a lens element. The light folding element is configured to fold the optical axis at least once, and includes an incident surface, an exit surface and an optical reflecting surface. The plate-shaped light blocking element keeps an air distance between the plate-shaped light blocking element and the light folding element, and includes two layered structures and columnar air structures. The layered structures are corresponding to the light folding element. The columnar air structures are farther away from the light folding element than a surface of the plate-shaped light blocking element from the light folding element, and the surface of the plate-shaped light blocking element faces toward the light folding element.
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公开(公告)号：US20210080623A1
公开(公告)日：2021-03-18
申请号：US16944331
申请日：2020-07-31
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chih-Wei CHENG , Ming-Ta CHOU
Abstract: An imaging optical element set has an optical axis, and includes an object-side lens element, an image-side lens element and a light blocking sheet. The light blocking sheet is interposed between the object-side lens element and the image-side lens element, and includes an object-side outer surface, an image-side outer surface, an outer diameter portion, an inner diameter portion and a height compensation structure. The image-side outer surface is opposite to the object-side outer surface. The outer diameter portion has an outer diameter surface connected to the object-side outer surface and the image-side outer surface. The inner diameter portion has an inner diameter surface connected to the object-side outer surface and the image-side outer surface. The height compensation structure is in full circle form, and is for adjusting a height difference between the inner diameter surface and the outer diameter surface along a direction parallel to the optical axis.
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