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公开(公告)号：US20240111136A1
公开(公告)日：2024-04-04
申请号：US17986790
申请日：2022-11-14
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hsiang-Chi TANG , Tzu-Chieh KUO
CPC classification number: G02B15/143 , G03B30/00
Abstract: An image system lens assembly includes three lens groups including five lens elements. The three lens groups are, in order from an object side to an image side: first, second and third lens groups. The five lens elements are, in order from the object side to the image side: first, second, third, fourth and fifth lens elements. A zooming process is performed by changing axial distances between the three lens groups. The image system lens assembly has a long focal length end and a short focal length end. At least one surface of at least one lens element has an inflection point in an optically effective area thereof when the image system lens assembly is at the long focal length end and the short focal length end. The second lens group is moved relative to the first lens group along an optical axis in the zooming process.
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公开(公告)号：US20240069309A1
公开(公告)日：2024-02-29
申请号：US18454214
申请日：2023-08-23
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Tzu-Chieh KUO
CPC classification number: G02B13/0045 , G02B13/06 , G02B13/18
Abstract: An image lens assembly includes six lens elements, and the six lens elements are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. Each of the six lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The first lens element with negative refractive power has the image-side surface being concave in a paraxial region thereof. The second lens element has negative refractive power. At least one surface of at least one of the six lens elements includes at least one inflection point.
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公开(公告)号：US20230258912A1
公开(公告)日：2023-08-17
申请号：US17747909
申请日：2022-05-18
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ting YEH , Tzu-Chieh KUO
CPC classification number: G02B13/0065 , G02B9/04 , G02B13/003
Abstract: A photographing lens system includes, in order from an object side to an image side along an optical path, a front lens group and a rear lens group. The front lens group includes four lens elements. The rear lens group includes four lens elements. A second lens element counted from the image side in the front lens group has negative refractive power. An image-side surface of a first lens element counted from the image side in the front lens group is convex in a paraxial region thereof. A second lens element counted from the object side in the rear lens group has negative refractive power. An object-side surface of a first lens element counted from the image side in the rear lens group is concave in a paraxial region thereof. At least one lens element in the rear lens group has at least one lens surface being aspheric.
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公开(公告)号：US20230213733A1
公开(公告)日：2023-07-06
申请号：US18184056
申请日：2023-03-15
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hung-Shuo CHEN , Chien-Hsun WU , Tzu-Chieh KUO
CPC classification number: G02B9/58 , G02B13/004 , H04N23/20
Abstract: An electronic device includes at least one optical lens assembly. The optical lens assembly includes four lens elements, and the four lens elements are, in order from an outside to an inside, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element has an outside surface being convex in a paraxial region thereof. The second lens element has an inside surface being convex in a paraxial region thereof. The fourth lens element has an inside surface being concave in a paraxial region thereof, wherein at least one of an outside surface and the inside surface of the fourth lens element includes at least one critical point in an off-axis region thereof.
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公开(公告)号：US20230070553A1
公开(公告)日：2023-03-09
申请号：US17718445
申请日：2022-04-12
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chun-Yen CHEN , Tzu-Chieh KUO
Abstract: An optical imaging system assembly includes seven lens elements, which are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The second lens element has negative refractive power. An object-side surface of the third lens element is convex in a paraxial region thereof. An image-side surface of the fifth lens element is convex in a paraxial region thereof. The sixth lens element has negative refractive power, an object-side surface of the sixth lens element is convex in a paraxial region thereof, an image-side surface of the sixth lens element is concave in a paraxial region thereof. The seventh lens element has negative refractive power.
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Patent Agency Ranking
公开(公告)号：US20220326470A1
公开(公告)日：2022-10-13
申请号：US17848495
申请日：2022-06-24
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Ta CHOU , Hsiang-Chi TANG , Tzu-Chieh KUO
Abstract: A plastic lens assembly includes at least two plastic lens elements and at least one cementing glue coating. The plastic lens elements include a first plastic lens element and a second plastic lens element. The first plastic lens element has a first optical effective portion and a first peripheral portion, wherein the first peripheral portion surrounds the first optical effective portion. The second plastic lens element has a second optical effective portion and a second peripheral portion, wherein the second peripheral portion surrounds the second optical effective portion. The cementing glue coating is disposed between the first optical effective portion and the second optical effective portion, and for cementing the first plastic lens element and the second plastic lens element, wherein at least one optical gap is formed between the first optical effective portion and the second optical effective portion.
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公开(公告)号：US20220269047A1
公开(公告)日：2022-08-25
申请号：US17743326
申请日：2022-05-12
Applicant: LARGAN PRECISION CO.,LTD.
Inventor： Po-Lun HSU , Tzu-Chieh KUO
Abstract: An optical imaging lens assembly includes a focus tunable component and an imaging lens system. The imaging lens system includes, in order from an object side to an image side, a first lens group and a second lens group. The first lens group includes, in order from the object side to the image side, an object-side first lens element and an object-side second lens element. The second lens group includes, in order from the image side to the object side, an image-side first lens element and an image-side second lens element. At least one lens surface of at least one lens element in the imaging lens system is aspheric and has at least one inflection point. The imaging lens system has a total of at least four lens elements.
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公开(公告)号：US20220236530A1
公开(公告)日：2022-07-28
申请号：US17198089
申请日：2021-03-10
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Yu Jui LIN , Jin Sen WANG , Tzu-Chieh KUO
Abstract: An optical photographing lens assembly includes five lens elements which are, in order from an object side to an image side along an optical path: a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. Each of the five lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The first lens element has negative refractive power, and the object-side surface of the first lens element is concave in a paraxial region thereof. The five lens elements include at least one freeform lens element, and at least one of the object-side surface and the image-side surface of the at least one freeform lens element is a freeform surface.
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公开(公告)号：US20220035135A1
公开(公告)日：2022-02-03
申请号：US17230161
申请日：2021-04-14
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuo-Jui WANG , Tzu-Chieh KUO
Abstract: An image capturing lens assembly includes seven lens elements, which are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. Each of the seven lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The second lens element with positive refractive power has the object-side surface being convex in a paraxial region thereof. The fourth lens element with positive refractive power has the image-side surface being convex in a paraxial region thereof. The sixth lens element has positive refractive power. The seventh lens element has the image-side surface being concave in a paraxial region thereof.
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公开(公告)号：US20210373284A1
公开(公告)日：2021-12-02
申请号：US17144244
申请日：2021-01-08
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuo-Jui WANG , Tzu-Chieh KUO
Abstract: An image capturing lens assembly includes seven lens elements, which are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, each of the seven lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The first lens element has negative refractive power. The third lens element has positive refractive power. The seventh lens element has negative refractive power.
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