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公开(公告)号：US20250035890A1
公开(公告)日：2025-01-30
申请号：US18679864
申请日：2024-05-31
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ting YEH , Shih-Han CHEN , Yi-Cheng LIN , Hsin-Hsuan HUANG , Yu-Han SHIH
Abstract: An optical lens system includes six lens elements from an object side to an image side, the six lens elements are, in order from the object side to the image side, 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 image-side surface of the second lens element is concave in a paraxial region thereof. The third lens element has positive refractive power. The image-side surface of the fourth lens element is concave in a paraxial region thereof. The image-side surface of the sixth lens element includes at least one inflection point.
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公开(公告)号：US20240231046A1
公开(公告)日：2024-07-11
申请号：US18615886
申请日：2024-03-25
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chun-Yen CHEN , Kuan-Ting YEH , Tzu-Chieh KUO
CPC classification number: G02B9/64 , G02B13/0045 , G02B27/0025 , G02B15/1461
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：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：US20230228973A1
公开(公告)日：2023-07-20
申请号：US18060997
申请日：2022-12-02
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ting YEH , Meng-Kuan CHO , Cheng-Yu TSAI
Abstract: An imaging optical system lens assembly includes six lens elements, which is, 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. The first lens element has negative refractive power, the object-side surface of the first lens element is concave in a paraxial region thereof, the image-side surface of the first lens element is convex in a paraxial region thereof. The second lens element has positive refractive power, the object-side surface of the second lens element is convex in a paraxial region thereof, the image-side surface of the second lens element is concave in a paraxial region thereof. The fifth lens element has positive refractive power.
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公开(公告)号：US20220244504A1
公开(公告)日：2022-08-04
申请号：US17721258
申请日：2022-04-14
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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Patent Agency Ranking
公开(公告)号：US20220011538A1
公开(公告)日：2022-01-13
申请号：US17486736
申请日：2021-09-27
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ting YEH , Hsin-Hsuan HUANG
Abstract: An imaging lens system includes four 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 and a fourth lens element, and 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 first lens element has negative refractive power. The fourth lens element has positive refractive power, and the image-side surface of the fourth lens element is convex in a paraxial region thereof. At least one lens element of the imaging lens system has at least one lens surface having at least one inflection point.
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公开(公告)号：US20210349287A1
公开(公告)日：2021-11-11
申请号：US17111573
申请日：2020-12-04
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ting YEH , Tzu-Chieh KUO
Abstract: An image capturing optical lens assembly includes three lens elements, the three lens elements being, in order from an object side to an image side along an optical path, a first lens element, a second lens element and a third lens element. Each of the three lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The second lens element has negative refractive power. The object-side surface of the third lens element is concave in a paraxial region thereof, and the image-side surface of the third lens element is convex in a paraxial region thereof. The image capturing optical lens assembly has a total of three lens elements.
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公开(公告)号：US20200150402A1
公开(公告)日：2020-05-14
申请号：US16746861
申请日：2020-01-18
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ting YEH , Hung-Shuo CHEN , Chien-Hsun WU , Wei-Yu CHEN
Abstract: An imaging lens system includes five 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 and a fifth lens element. At least one of an object-side surface and an image-side surface of the fifth lens element has at least one inflection point. The object-side surface and the image-side surface of the fifth lens element are both aspheric.
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公开(公告)号：US20190064483A1
公开(公告)日：2019-02-28
申请号：US15865163
申请日：2018-01-08
Applicant: LARGAN PRECISION CO.,LTD.
Inventor： Chun-Yen CHEN , Kuan-Ting YEH , Shu-Yun YANG
Abstract: An imaging lens system includes, 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 and a sixth lens element. The first lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The second lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof. The third lens element with positive refractive power 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 image-side surface being concave in a paraxial region thereof. The sixth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof.
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公开(公告)号：US20250155680A1
公开(公告)日：2025-05-15
申请号：US18398838
申请日：2023-12-28
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ting YEH , Cheng-Yu TSAI
Abstract: An optical photographing 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. The object-side surface of the first lens element is convex in a paraxial region thereof. The second lens element has positive refractive power. The third lens element has negative refractive power. The image-side surface of the third lens element is concave in a paraxial region thereof. The image-side surface of the seventh 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 seven lens elements has at least one inflection point.
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