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公开(公告)号：US20240126045A1
公开(公告)日：2024-04-18
申请号：US17994237
申请日：2022-11-25
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ting YEH , Cheng-Yu TSAI
Abstract: An imaging system lens assembly includes, in order from an object side to an image side: a first lens element, a second lens element, a third lens element and a fourth lens element. Each of the four lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The second lens element has positive refractive power. The object-side surface of the third lens element is convex in a paraxial region thereof.
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公开(公告)号：US20240004162A1
公开(公告)日：2024-01-04
申请号：US17899461
申请日：2022-08-30
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Yu Jui LIN , Kuan-Ting YEH , I-Hsuan CHEN , Hsin-Hsuan HUANG
CPC classification number: G02B13/0045 , G02B9/62
Abstract: An imaging system lens assembly includes six 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 and a sixth lens element. Each of the six 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 positive refractive power. The image-side surface of the fifth lens element is convex in a paraxial region thereof. The image-side surface of the sixth lens element is concave in a paraxial region thereof, and the image-side surface of the sixth lens element has at least one inflection point.
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公开(公告)号：US20230132957A1
公开(公告)日：2023-05-04
申请号：US17537870
申请日：2021-11-30
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Jin Sen WANG , Kuo-Jui WANG , Kuan-Ting YEH , Tzu-Chieh KUO
IPC: G02B9/64 , G02B13/00 , H01L27/146
Abstract: An optical photographing system 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 facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the sixth lens element is convex 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 optical photographing system has at least one inflection point.
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公开(公告)号：US20220244495A1
公开(公告)日：2022-08-04
申请号：US17376250
申请日：2021-07-15
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ting YEH , Wei-Yu CHEN
Abstract: An image capturing optical lens system includes four 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 and a fourth lens element. The first lens element has an object-side surface being convex in a paraxial region thereof. The third lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The fourth lens element has negative refractive power.
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公开(公告)号：US20220214522A1
公开(公告)日：2022-07-07
申请号：US17695735
申请日：2022-03-15
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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Patent Agency Ranking
公开(公告)号：US20220171171A1
公开(公告)日：2022-06-02
申请号：US17516771
申请日：2021-11-02
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ting YEH , Wei-Yu CHEN
Abstract: An image lens assembly includes, in order from an object side to an image side along an optical path, a first lens group, a second lens group, a third lens group and a fourth lens group. A total number of lens elements in the image lens assembly is seven. The first lens group includes a first lens element with positive refractive power and a second lens element with negative refractive power. Each of the second lens group and the third lens group includes at least one lens element. The fourth lens group includes a seventh lens element. When the image lens assembly is focusing or zooming, a relative position between the first lens group and an image surface is fixed, a relative position between the fourth lens group and the image surface is fixed, and the second lens group and the third lens group move along the optical axis.
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公开(公告)号：US20220035141A1
公开(公告)日：2022-02-03
申请号：US17074372
申请日：2020-10-19
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ting YEH , Wei-Yu CHEN
IPC: G02B15/14
Abstract: An image lens assembly includes four lens groups: a first lens group, a second lens group, a third lens group and a fourth lens group along an optical path. The four lens groups include nine lens elements: a first lens element with positive refractive power, a second lens element with negative refractive power, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, an eighth lens element and a ninth lens element along the optical path. At least one lens element of the image lens assembly has at least one inflection point. At least five lens elements of the image lens assembly are made of plastic material. When focusing or zooming, the first lens group and the fourth lens group stay stationary, while the second lens group and the third lens group move along an optical axis.
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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：US20200233183A1
公开(公告)日：2020-07-23
申请号：US16838843
申请日：2020-04-02
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Po-Lun HSU , Wei-Yu CHEN , Kuan-Ting YEH , Ssu-Hsin LIU
Abstract: A photographing lens assembly includes, in order from an object side to an image side: a first, a second, a third, a fourth, a fifth and a sixth lens elements. The first lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof, wherein the object-side surface has at least one convex critical point in an off-axis region thereof. The third lens element has an image-side surface being convex in a paraxial region thereof. The fourth lens element has positive refractive power. The fifth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof, and an image-side surface being convex in a paraxial region thereof. The sixth lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface has at least one convex critical point in an off-axis region thereof.
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公开(公告)号：US20180299649A1
公开(公告)日：2018-10-18
申请号：US15796276
申请日：2017-10-27
Applicant: LARGAN Precision Co., Ltd.
Inventor： Po-Lun HSU , Wei-Yu CHEN , Kuan-Ting YEH , Ssu-Hsin LIU
Abstract: A photographing lens assembly includes, in order from an object side to an image side: a first, a second, a third, a fourth, a fifth and a sixth lens elements. The first lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof, wherein the object-side surface has at least one convex critical point in an off-axis region thereof. The third lens element has an image-side surface being convex in a paraxial region thereof. The fourth lens element has positive refractive power. The fifth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof, and an image-side surface being convex in a paraxial region thereof. The sixth lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface has at least one convex critical point in an off-axis region thereof.
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