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公开(公告)号：US11789236B2
公开(公告)日：2023-10-17
申请号：US17234868
申请日：2021-04-20
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hsiang-Chi Tang , Chun-Yen Chen , Hung-Shuo Chen , Wei-Yu Chen
CPC classification number: G02B9/64 , G02B13/0045
Abstract: A photographing optical 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 first 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 second lens element has positive refractive power. The sixth lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The seventh lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof and including at least one convex critical point in an off-axis region thereof.
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公开(公告)号：US11719911B2
公开(公告)日：2023-08-08
申请号：US17115731
申请日：2020-12-08
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Yu Jui Lin , Yu-Chun Ke , Jin Sen Wang , Wei-Yu Chen , Chun-Yen Chen
CPC classification number: G02B9/64 , G02B13/0045 , G02B13/02 , G02B27/0025
Abstract: An imaging optical 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 third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element has negative refractive power. The fifth lens element has an object-side surface being concave in a paraxial region thereof. The sixth lens element with negative 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, and the image-side surface of the sixth lens element has at least one critical point in an off-axis region thereof.
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公开(公告)号：US11520123B2
公开(公告)日：2022-12-06
申请号：US16906000
申请日：2020-06-19
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chun-Yen Chen
Abstract: An optical photographing assembly includes, in order from an object side to an image side along an optical axis, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element has positive refractive power. The third lens element has at least one of an object-side surface and an image-side surface being aspheric. The fourth lens element has at least one of an object-side surface and an image-side surface being aspheric. The fifth lens element has at least one of an object-side surface and an image-side surface being aspheric, wherein at least one of the object-side surface and the image-side surface of the fifth lens element includes at least one inflection point.
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公开(公告)号：US11314050B2
公开(公告)日：2022-04-26
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：US11194127B2
公开(公告)日：2021-12-07
申请号：US16377385
申请日：2019-04-08
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chun-Yen Chen , Wei-Yu Chen
Abstract: A photographing optical lens assembly includes six 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 fifth lens element and a sixth lens element. The first lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof. The sixth lens element has an image-side surface being concave in a paraxial region thereof and includes at least one convex shape in an off-axis region thereof.
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Patent Agency Ranking
公开(公告)号：US11067778B2
公开(公告)日：2021-07-20
申请号：US16849012
申请日：2020-04-15
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hsiang-Chi Tang , Chun-Che Hsueh , Chun-Yen Chen , Yu-Tai Tseng , Wei-Yu Chen
Abstract: An imaging optical lens assembly includes seven lens elements, the seventh 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, and a seventh lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element has negative refractive power. The seventh lens element has an image-side surface being concave in a paraxial region thereof and having a critical point in an off-axis region thereof. The image-side surface and an object-side surface of the seventh lens element are both aspheric.
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公开(公告)号：US10698179B2
公开(公告)日：2020-06-30
申请号：US16538907
申请日：2019-08-13
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Po-Lun Hsu , Chun-Yen Chen , Chun-Che Hsueh , Wei-Yu Chen
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. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The third lens element has positive refractive power. The seventh lens element has an image-side surface being concave in a paraxial region thereof and including at least one convex shape in an off-axis region thereof. An object-side surface and the image-side surface of the seventh lens element are aspheric.
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公开(公告)号：US10663693B2
公开(公告)日：2020-05-26
申请号：US16026370
申请日：2018-07-03
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hsiang-Chi Tang , Chun-Che Hsueh , Chun-Yen Chen , Yu-Tai Tseng , Wei-Yu Chen
Abstract: An imaging optical lens assembly includes seven lens elements, the seventh 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, and a seventh lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element has negative refractive power. The seventh lens element has an image-side surface being concave in a paraxial region thereof and having a critical point in an off-axis region thereof. The image-side surface and an object-side surface of the seventh lens element are both aspheric.
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公开(公告)号：US10429611B2
公开(公告)日：2019-10-01
申请号：US15865503
申请日：2018-01-09
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Po-Lun Hsu , Chun-Yen Chen , Chun-Che Hsueh , Wei-Yu Chen
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. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The third lens element has positive refractive power. The seventh lens element has an image-side surface being concave in a paraxial region thereof and including at least one convex shape in an off-axis region thereof. An object-side surface and the image-side surface of the seventh lens element are aspheric.
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公开(公告)号：US10247924B2
公开(公告)日：2019-04-02
申请号：US15974005
申请日：2018-05-08
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Cheng-Chen Lin , Chun-Yen Chen , Wei-Yu Chen
Abstract: An imaging optical lens system includes six lens elements, the six 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 and a sixth lens element. The first lens element has positive refractive power. The third lens element has an image-side surface being concave in a paraxial region thereof. The fifth lens element has an object-side surface and an image-side surface being both aspheric. The sixth lens element has an image-side surface being concave in a paraxial region thereof, wherein an object-side surface and the image-side surface of the sixth lens element are both aspheric, and the image-side surface of the sixth lens element includes at least one convex critical point in an off-axial region thereof.
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