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公开(公告)号：US20200158987A1
公开(公告)日：2020-05-21
申请号：US16522843
申请日：2019-07-26
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Ta CHOU , Hsiang-Chi TANG , Tzu-Chieh KUO
Abstract: A plastic lens assembly includes at least two plastic lens elements and at least one cementing glue coating. The plastic lens elements include a first plastic lens element and a second plastic lens element. The first plastic lens element has a first optical effective portion and a first peripheral portion, wherein the first peripheral portion surrounds the first optical effective portion. The second plastic lens element has a second optical effective portion and a second peripheral portion, wherein the second peripheral portion surrounds the second optical effective portion. The cementing glue coating is disposed between the first optical effective portion and the second optical effective portion, and for cementing the first plastic lens element and the second plastic lens element, wherein at least one optical gap is formed between the first optical effective portion and the second optical effective portion.
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公开(公告)号：US20200081228A1
公开(公告)日：2020-03-12
申请号：US16174085
申请日：2018-10-29
Applicant: LARGAN PRECISION CO.,LTD.
Inventor： Tzu-Chieh KUO
Abstract: An electronic device includes an optical system. The optical system includes six lens elements, and the six lens elements are, in order from an outer side to an inner 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 outer-side surface facing toward the outer side and an inner-side surface facing toward the inner side. Each of at least three lens surfaces of the six lens elements is aspheric and has at least one inflection point.
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公开(公告)号：US20200018930A1
公开(公告)日：2020-01-16
申请号：US16112666
申请日：2018-08-25
Applicant: LARGAN PRECISION CO.,LTD.
Inventor： Yu-Tai TSENG , Yu-Chun KE , Kuo-Jui WANG , Tzu-Chieh KUO
Abstract: An imaging optical lens assembly 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. 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. At least one of all lens surfaces of the four lens elements is aspheric and has at least one inflection point.
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公开(公告)号：US20190302424A1
公开(公告)日：2019-10-03
申请号：US16133001
申请日：2018-09-17
Applicant: LARGAN PRECISION CO.,LTD.
Inventor： Tzu-Chieh KUO , Wei-Yu CHEN
Abstract: A photographing optical lens system 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 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 convex in a paraxial region thereof. The seventh lens element has negative refractive power. The object-side surface of the seventh lens element is concave in a paraxial region thereof. At least one of all lens surfaces of the seven lens elements is aspheric and has at least one inflection point.
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公开(公告)号：US20180095243A1
公开(公告)日：2018-04-05
申请号：US15363885
申请日：2016-11-29
Applicant: LARGAN Precision Co., Ltd.
Inventor： Chien-Hsun WU , Tzu-Chieh KUO
CPC classification number: G02B13/004 , G02B5/005 , G02B5/208 , G02B9/34 , G02B27/0025
Abstract: An optical 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 and a fourth 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 third lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. 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, the image-side surface of the fourth lens element has at least one convex critical point in an off-axial region thereof, and the two surfaces thereof are both aspheric. The optical imaging lens system has a total of four lens elements.
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Patent Agency Ranking
公开(公告)号：US20240411117A1
公开(公告)日：2024-12-12
申请号：US18225636
申请日：2023-07-24
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ting YEH , Tzu-Chieh KUO
Abstract: An optical photographing lens includes two lens groups including six lens elements. The two lens groups are, in order from an object side to an image side, a first and a second lens groups. The six lens elements are, in order from the object side to the image side, a first lens element through a sixth lens element. A focal length adjusting process is performed by changing an axial distance between the lens groups for varying a focal length of the optical photographing lens. The second lens group moves relative to the first lens group during the focal length adjusting process. At least one lens surface of the optical photographing lens has at least one inflection point always located within an optically effective area during the focal length adjusting process. The second lens element has negative refractive power.
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公开(公告)号：US20240345367A1
公开(公告)日：2024-10-17
申请号：US18207014
申请日：2023-06-07
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Yu Jui LIN , Tzu-Chieh KUO
CPC classification number: G02B13/0045 , G02B9/64 , G02B13/02 , G02B13/06
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 through 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 second lens element is convex in a paraxial region thereof. The sixth lens element has positive refractive power. The object-side surface of the seventh 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 of the seven lens elements has at least one inflection point in an off-axis region thereof.
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公开(公告)号：US20240280789A1
公开(公告)日：2024-08-22
申请号：US18136307
申请日：2023-04-18
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ting YEH , Chun-Yen CHEN , Tzu-Chieh KUO
CPC classification number: G02B13/0045 , G02B9/64 , H04N23/55
Abstract: An imaging lens 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 through 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 image-side surface of the sixth lens element is concave in a paraxial region thereof. The object-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 of the seven lens elements has at least one inflection point in an off-axis region thereof.
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公开(公告)号：US20240248285A1
公开(公告)日：2024-07-25
申请号：US18594059
申请日：2024-03-04
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Yu-Tai TSENG , Tzu-Chieh KUO
CPC classification number: G02B13/0045 , G02B9/64
Abstract: A photographing optical lens assembly includes eight 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, a seventh lens element and an eighth lens element. Each of the eight lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The first lens element has positive refractive power. The object-side surface of the fifth lens element is concave in a paraxial region thereof. The image-side surface of the sixth lens element is concave in a paraxial region thereof. 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.
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公开(公告)号：US20230408795A1
公开(公告)日：2023-12-21
申请号：US17894104
申请日：2022-08-23
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Pin-Yen CHU , Kuan-Ting YEH , Chun-Yen CHEN , Tzu-Chieh KUO
IPC: G02B9/64
CPC classification number: G02B9/64
Abstract: An imaging lens assembly includes, in order from an object side to an image side along an optical path: a first lens element through an eighth 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 an object-side surface being convex in a paraxial region thereof. The fifth lens element has positive refractive power. The sixth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The seventh lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The eighth lens element has negative refractive power. At least one lens surface of the imaging lens assembly has at least one critical point in an off-axis region thereof.
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