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公开(公告)号：US20220137339A1
公开(公告)日：2022-05-05
申请号：US17125733
申请日：2020-12-17
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Tzu-Chieh KUO
Abstract: An image capturing optical system includes ten lens elements which are, in order from an object side to an image side along an optical path: a first lens element having positive refractive power, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, an eighth lens element, a ninth lens element and a tenth lens element having negative refractive power. Each of the ten lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The image-side surface of the second lens element is concave in a paraxial region thereof. At least one of the object-side surface and the image-side surface of at least one lens element of the image capturing optical system has at least one critical point in an off-axis region thereof.
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公开(公告)号：US20220035132A1
公开(公告)日：2022-02-03
申请号：US17020611
申请日：2020-09-14
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuo-Jui WANG , Tzu-Chieh KUO
Abstract: An image capturing lens system includes four lens groups which include eight lens elements. The four lens groups are, in order from an object side to an image side: first, second, third and fourth lens groups. The eight lens elements are, in order from the object side to the image side: first, second, third, fourth, fifth, sixth, seventh and eighth lens elements. The first and second lens elements respectively have positive and negative refractive power. At least one lens element in the second through fourth lens groups has an inflection point. A focal length of the image capturing lens system is varied by changing axial distances between the four lens groups in a zooming process. The second lens group is moved relative to the first lens group along an optical axis in the zooming process. The image capturing lens system has a long-focal-length end and a short-focal-length end.
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公开(公告)号：US20210396974A1
公开(公告)日：2021-12-23
申请号：US17465995
申请日：2021-09-03
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Tzu-Chieh KUO
Abstract: A photographing optical lens assembly includes eight lens elements, the eight lens elements being, 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, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element. Each of the eight lens elements has an object-side surface facing towards the object side and an image-side surface facing towards the image side. At least one surface of the object-side surface and the image-side surface of at least one lens element of the photographing optical lens assembly is aspheric and includes at least one inflection point.
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公开(公告)号：US20210157092A1
公开(公告)日：2021-05-27
申请号：US16734132
申请日：2020-01-03
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chun-Yen CHEN , Kuan-Ting YEH , Tzu-Chieh KUO
Abstract: A photographing optical system includes eight lens elements which are, 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, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element. The eight lens elements each have an object-side surface facing toward the object side and an image-side surface facing toward the image side. The first lens element has positive refractive power. The fifth lens element has positive refractive power. The object-side surface of the seventh lens element is convex in a paraxial region thereof. The image-side surface of the eighth lens element is concave in a paraxial region thereof. At least one lens surface of at least one lens element of the photographing optical system has at least one critical point in an off-axis region thereof.
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公开(公告)号：US20200301110A1
公开(公告)日：2020-09-24
申请号：US16404508
申请日：2019-05-06
Applicant: LARGAN PRECISION CO.,LTD.
Inventor： Po-Lun HSU , Tzu-Chieh KUO
Abstract: An optical imaging lens assembly includes seven lens elements which are, 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, a fifth lens element, a sixth lens element and a seventh lens element. Each of the seven lens elements of the optical imaging lens assembly has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one lens element of the optical imaging lens assembly has at least one aspheric lens surface having at least one inflection point. The object-side surface of the seventh lens element is concave in a paraxial region thereof.
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Patent Agency Ranking
公开(公告)号：US20200249434A1
公开(公告)日：2020-08-06
申请号：US16297199
申请日：2019-03-08
Applicant: LARGAN PRECISION CO.,LTD.
Inventor： Cheng-Chen LIN , Yu-Tai TSENG , Tzu-Chieh KUO
Abstract: An optical photographing lens assembly includes seven lens elements which are, 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, a fifth lens element, a sixth lens element and a seventh lens element. Each of the seven lens elements of the optical photographing lens assembly has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the first lens element is concave in a paraxial region thereof. The object-side surface of the first lens element is aspheric and has at least one critical point in an off-axis region thereof.
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公开(公告)号：US20190235211A1
公开(公告)日：2019-08-01
申请号：US16376171
申请日：2019-04-05
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ssu-Hsin LIU , Tzu-Chieh KUO
IPC: G02B13/00
CPC classification number: G02B13/008 , G02B13/004
Abstract: The present disclosure provides an optical photographing lens system comprising four lens elements, the four lens elements being, in order from an object side to an image side: a first lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof; a second lens element; a third lens element; and a fourth lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, the image-side surface of the fourth lens element having at least one convex critical point in an off-axial region thereof, both the object-side and the image-side surfaces thereof being aspheric.
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公开(公告)号：US20190079270A1
公开(公告)日：2019-03-14
申请号：US15795003
申请日：2017-10-26
Applicant: LARGAN Precision Co., Ltd.
Inventor： Yu-Tai TSENG , Tzu-Chieh KUO
CPC classification number: G02B13/0045 , G02B9/64 , G02B27/0025 , H04N5/23212
Abstract: An image system lens assembly includes seven lens elements which are, 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, a fifth lens element, a sixth lens element and a seventh lens element. At least one surface among object-side surfaces and image-side surfaces of the fifth lens element, the sixth lens element and the seventh lens element has at least one critical point in an off-axis region thereof.
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公开(公告)号：US20190025551A1
公开(公告)日：2019-01-24
申请号：US15843112
申请日：2017-12-15
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Tzu-Chieh KUO
Abstract: An optical image capturing lens assembly includes seven lens elements, which are, 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, a fifth lens element, a sixth lens element and a seventh lens element. The second lens element has negative refractive power. The sixth lens element has an object-side surface and an image-side surface being both aspheric. At least one of object-side surfaces and image-side surfaces of the fifth lens element and the sixth lens element includes at least one critical point in an off-axial region thereof.
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公开(公告)号：US20180172952A1
公开(公告)日：2018-06-21
申请号：US15589096
申请日：2017-05-08
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ssu-Hsin LIU , Tzu-Chieh KUO
CPC classification number: G02B13/008 , G02B13/004
Abstract: The present disclosure provides an optical photographing lens system comprising four lens elements, the four lens elements being, in order from an object side to an image side: a first lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof; a second lens element; a third lens element; and a fourth lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, the image-side surface of the fourth lens element having at least one convex critical point in an off-axial region thereof, both the object-side and the image-side surfaces thereof being aspheric.
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