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公开(公告)号：US10656385B2
公开(公告)日：2020-05-19
申请号：US16031912
申请日：2018-07-10
Applicant: LARGAN PRECISION CO.,LTD.
Inventor： Wei-Yu Chen
Abstract: A photographing 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, a sixth lens element and a seventh lens element with refractive power. The first lens element with positive refractive power has an object-side surface being convex in paraxial region. The second lens element with refractive power has an image-side surface being concave in paraxial region. The third, fourth and fifth lens elements all have refractive powers. The sixth lens element with refractive power has an image-side surface being concave in paraxial region, wherein the image-side surface has at least one convex shape in off-axis region, and both of two surfaces are aspheric. The seventh lens element with refractive power has an object-side surface being concave in paraxial region, and both of two surfaces are aspheric.
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公开(公告)号：US10649179B2
公开(公告)日：2020-05-12
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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公开(公告)号：US10571660B2
公开(公告)日：2020-02-25
申请号：US15701482
申请日：2017-09-12
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Po-Lun Hsu , Wei-Yu Chen
Abstract: An imaging lens assembly 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. The first lens element has positive refractive power. The second lens element has positive refractive power. The fourth 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, wherein the two surfaces of the fourth lens element are both aspheric. The fifth lens element having an image-side surface being concave in a paraxial region thereof, wherein two surfaces of the fifth lens element are both aspheric, and the image-side surface of the fifth lens element includes at least one convex critical point in an off-axis region thereof.
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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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Patent Agency Ranking
公开(公告)号：US10185125B2
公开(公告)日：2019-01-22
申请号：US15470502
申请日：2017-03-27
Applicant: LARGAN Precision Co., Ltd.
Inventor： Cheng-Chen Lin , Chun-Yen Chen , Yu-Tai Tseng , Hung-Shuo Chen , Wei-Yu Chen
Abstract: A photographing optical 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. The second lens element has positive refractive power. The third lens element has negative refractive power. 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, wherein the image-side surface thereof has at least one convex critical point in an off-axial region thereof, the object-side surface and the image-side surface thereof are aspheric.
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公开(公告)号：US10175456B2
公开(公告)日：2019-01-08
申请号：US15376931
申请日：2016-12-13
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chien-Hsun Wu , Hsiang Chi Tang , Wei-Yu Chen
Abstract: The present disclosure provides an imaging lens assembly including, 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 with negative refractive power having an object-side surface being concave in a paraxial region thereof; a third lens element; a fourth lens element; a fifth lens element having an object-side surface being concave in a paraxial region thereof, both of the object-side surface and an image-side surface thereof being aspheric; and a sixth lens element having an object-side surface and an image-side surface being both aspheric. The imaging lens assembly has a total of six lens elements.
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公开(公告)号：US10073248B2
公开(公告)日：2018-09-11
申请号：US15078030
申请日：2016-03-23
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Cheng-Chen Lin , Chun-Che Hsueh , Wei-Yu Chen
CPC classification number: G02B13/0045 , G02B9/62 , G02B13/06
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 has negative refractive power. The fourth lens element with positive refractive power has an object-side surface and an image-side surface being both aspheric. 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, wherein two surfaces of the fifth lens element are aspheric. The sixth lens element has an image-side surface being concave in a paraxial region thereof and comprising at least one convex shape in an off-axial region thereof, wherein two surfaces of the sixth lens element are aspheric.
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公开(公告)号：US10036876B2
公开(公告)日：2018-07-31
申请号：US15844102
申请日：2017-12-15
Applicant: LARGAN Precision Co., Ltd.
Inventor： Wei-Yu Chen
CPC classification number: G02B13/0045 , G02B3/04 , G02B5/005 , G02B5/208 , G02B9/64 , G02B27/0025
Abstract: A photographing optical 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, a sixth lens element, a seventh lens element and an eighth lens element. The second lens element has positive refractive power. The eighth lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface of the eighth lens element has at least one convex shape in an off-axis region thereof, and both an object-side surface and the image-side surface thereof are aspheric. The photographing optical lens system has a total of eight lens elements. An air gap in a paraxial region is located between every two lens elements of the photographing optical lens system that are adjacent to each other.
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公开(公告)号：US10031318B2
公开(公告)日：2018-07-24
申请号：US15201326
申请日：2016-07-01
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chun-Yen Chen , Yu-Tai Tseng , Wei-Yu Chen , Chun-Che Hsueh
Abstract: An optical imaging 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, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with positive refractive power has an object-side surface being convex. The second lens element has negative refractive power. At least one of two surfaces of the fourth lens element has at least one inflection point, and the two surfaces thereof are aspheric. The fifth lens element has an object-side surface being convex and an image-side surface having at least one inflection point, and the two surfaces thereof are aspheric. The sixth lens element has an image-side surface being concave, wherein the image-side surface of the sixth lens element has at least one convex shape in off-axial region, and the two surfaces thereof are aspheric.
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