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公开(公告)号：US20230143018A1
公开(公告)日：2023-05-11
申请号：US18049696
申请日：2022-10-26
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ssu-Hsin LIU , Chen-Wei FAN , Ming-Ta CHOU , Chien-Pang CHANG , Wen-Yu TSAI
IPC: G02B7/02
CPC classification number: G02B7/021 , H04N5/2254
Abstract: An optical lens assembly includes a lens barrel and an optical lens group. The lens barrel includes a light entering hole, which is configured for allowing a light to enter the lens barrel. The lens barrel accommodates the optical lens group, and an optical axis passes through the optical lens group. The optical lens group includes a plurality of lens elements and at least one light blocking sheet. The light blocking sheet is an opaque sheet-shaped element and surrounds the optical axis to form a light passing hole. The light blocking sheet includes an object-side surface and an image-side surface, and the object-side surface is located more adjacent to the light entering hole than the image-side surface thereto. A first film layer is disposed on the object-side surface.
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公开(公告)号：US20230060740A1
公开(公告)日：2023-03-02
申请号：US17815279
申请日：2022-07-27
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Jyun-Jia CHENG , Yu-Chen LAI , Ming-Ta CHOU , Chen-Yi HUANG
Abstract: A camera module includes an imaging lens assembly and an image sensor. The imaging lens assembly includes a plastic optical element with a light-blocking layer disposed on its transparent surface. The plastic optical element includes an optical effective area, and a peripheral region of the light-blocking layer forms a specific shape around the optical effective area so as to define an aperture region. The peripheral region includes a main portion and a compensation portion. The main portion is physically contacted with the transparent surface. The compensation portion is disposed on an edge of the main portion adjacent to the optical effective area, and an optical density of the compensation portion is lower than an optical density of the main portion. The image sensor is disposed on an image side of the imaging lens assembly for defining a maximum image height and further defining a relative illumination.
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公开(公告)号：US20220308309A1
公开(公告)日：2022-09-29
申请号：US17839789
申请日：2022-06-14
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Ta CHOU
Abstract: A lens module with auto-focusing mechanism includes a plastic lens barrel, a lens assembly, an auto-focusing mechanism and a coil regulating structure. The plastic lens barrel includes a front end portion, a rear end portion and an outer side portion, wherein the front end portion includes a front end surface and a front end hole, the rear end portion includes a rear end opening, the outer side portion connects the front end portion and the rear end portion. The lens assembly is disposed in the plastic lens barrel, and includes a plurality of lens elements. The auto-focusing mechanism is connected to the plastic lens barrel, and includes a coil being polygon. The coil regulating structure is located on the outer side portion of the plastic lens barrel, and is integrated with the plastic lens barrel, wherein the coil is connected and positioned to the coil regulating structure.
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公开(公告)号：US20220124233A1
公开(公告)日：2022-04-21
申请号：US17563241
申请日：2021-12-28
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Shun CHANG , Ming-Ta CHOU , Chun-Hua TSAI
Abstract: An optical lens assembly includes at least one dual molded lens element. The dual molded lens element has a central axis, and includes a light transmitting portion and a light absorbing portion. The light transmitting portion includes an optical effective region and a lens peripheral region, and the lens peripheral region surrounds the optical effective region. A light absorbing portion surrounds the optical effective region. The light transmitting portion and the light absorbing portion are made of different plastic materials with different colors, and the light absorbing portion includes at least three gate portions surrounding the central axis, wherein all gate portions are located on the same surface of the dual molded lens element. The light transmitting portion and the light absorbing portion of the dual molded lens element are integrally formed by the injection molding.
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公开(公告)号：US20220113496A1
公开(公告)日：2022-04-14
申请号：US17556698
申请日：2021-12-20
Applicant: LARGAN PRECISION CO.,LTD.
Inventor： Hsiang-Chi TANG , Ming-Ta CHOU
Abstract: A photographing optical lens assembly includes five lens elements with refractive power, in order from an object side to an image side. The first lens element with refractive power has a convex object-side surface. The second lens element with positive refractive power has an object-side surface and an image-side surface both being aspheric. The third lens element has positive refractive power. The fourth lens element with refractive power has a concave object-side surface. The fifth lens element with refractive power has an object-side surface and a concave image-side surface with at least one inflection point, both the object-side surface and the image-side surface being aspheric.
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Patent Agency Ranking
公开(公告)号：US20220091357A1
公开(公告)日：2022-03-24
申请号：US17539265
申请日：2021-12-01
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Cheng-Feng LIN , Ming-Ta CHOU , Wei-Hung WENG
IPC: G02B7/02
Abstract: A plastic barrel includes an object-end portion, an image-end portion, a tube portion and a plurality of wedge structures. The object-end portion includes an outer object-end surface, an object-end hole and an inner annular object-end surface. The image-end portion includes an outer image-end surface, an image-end opening and an inner annular image-end surface. The tube portion connects the object-end portion and the image-end portion, and includes a plurality of inclined surfaces. The wedge structures are disposed on at least one surface of the inner annular object-end surface, the inner annular image-end surface and the inclined surfaces, wherein the wedge structures are regularly arranged around the central axis, and each of the wedge structures includes an acute end and a tapered section. The tapered section connects the surface, which the wedge structure is disposed on, and the acute end.
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公开(公告)号：US20210247586A1
公开(公告)日：2021-08-12
申请号：US16942964
申请日：2020-07-30
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Jyun-Jia CHENG , Heng-Yi SU , Ming-Ta CHOU , Ming-Shun CHANG
Abstract: An imaging lens assembly includes a plastic barrel and an optical element set. The optical element set includes an optical lens element, a light blocking sheet and a light-shielding layer. At least one surface of an object-side peripheral surface and an image-side peripheral surface of the optical lens element includes an annular side wall. An annular abutting surface of the light blocking sheet and the annular side wall of the optical lens element are disposed correspondingly to each other. The light-shielding layer surrounds a central opening of the light blocking sheet and includes an annular concave-curved portion. The annular concave-curved portion is for retaining the light blocking sheet, so that there is no relative displacement in a direction parallel to an optical axis between the annular abutting surface of the light blocking sheet and the annular side wall of the optical lens element.
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公开(公告)号：US20210165136A1
公开(公告)日：2021-06-03
申请号：US16935378
申请日：2020-07-22
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Wen-Yu TSAI , Heng-Yi SU , Ming-Ta CHOU , Chien-Pang CHANG , Kuo-Chiang CHU
Abstract: An imaging lens assembly includes a first optical element and a low-reflection layer. The first optical element has a central opening, and includes a first surface, a second surface and a first outer diameter surface. The first outer diameter surface is connected to the first surface and the second surface. The low-reflection layer is located on at least one of the first surface and the second surface, and includes a carbon black layer, a nano-microstructure and a coating layer. The nano-microstructure is directly contacted with and connected to the carbon black layer, and the nano-microstructure is farther from the first optical element than the carbon black layer from the first optical element. The coating layer is directly contacted with and connected to the nano-microstructure, and the coating layer is farther from the first optical element than the nano-microstructure from the first optical 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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30.发明申请公开(公告)号：US20200341241A1
公开(公告)日：2020-10-29
申请号：US16924444
申请日：2020-07-09
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Ta CHOU
Abstract: An optical lens assembly includes at least one lens element, which is a dual molded lens element. The dual molded lens element includes a light transmitting portion and a light absorbing portion. The light absorbing portion is annular and surrounds a central axis, wherein a plastic material and a color of the light absorbing portion are different from a plastic material and a color of the light transmitting portion, the dual molded lens element is made by an injection molding method and formed integrally, the light absorbing portion includes a plurality of second inner strip-shaped structures, the second inner strip-shaped structures are regularly arranged along a circumferential direction of the central axis, and the second inner strip-shaped structures are disposed correspondingly to and connected to a plurality of first inner strip-shaped structures.
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