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公开(公告)号：US20140139933A1
公开(公告)日：2014-05-22
申请号：US13785453
申请日：2013-03-05
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ming Chen , Tsung-Han Tsai , Hsin-Hsuan Huang
IPC: G02B13/00
CPC classification number: G02B13/0045 , G02B9/60 , G02B27/0025
Abstract: This disclosure provides an optical image capturing lens system comprising: a positive first lens element having a convex object-side surface, a negative second lens element, a positive third lens element having a convex image-side surface, a fourth lens element having a concave object-side surface and a convex image-side surface; and a positive fifth lens element having a convex object-side surface at a paraxial region thereof, both of the object-side and image-side surfaces being aspheric, and at least one inflection point is positioned on at least one of the object-side and image-side surfaces thereof. When particular relations are satisfied, the angle at which light projects onto the image plane can be efficiently controlled for increasing the relative illumination and preventing the occurrence of vignetting.
Abstract translation: 本公开内容提供一种光学图像拍摄透镜系统，包括：具有凸面物体侧表面的正第一透镜元件，负第二透镜元件，具有凸像侧表面的正第三透镜元件，具有凹面 物体侧表面和凸形图像侧表面; 以及在其近轴区域具有凸形物体侧表面的正的第五透镜元件，物体侧和像侧表面都是非球面的，并且至少一个拐点位于物体侧和至少一个拐点 及其像侧面。 当满足特定关系时，可以有效地控制光投影到图像平面上的角度，以增加相对照度并防止晕影的发生。
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公开(公告)号：US12271106B2
公开(公告)日：2025-04-08
申请号：US18134492
申请日：2023-04-13
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Te-Sheng Tseng , Chen Wei Fan , Ming-Ta Chou , Kuan-Ming Chen
Abstract: A variable aperture module includes a blade assembly including movable blades, a positioning element including positioning structures and a driving part including a rotation element. The movable blades are disposed around an optical axis to form a light passable hole with adjustable size for different hole size states and each have an inner surface to define the contour of the light passable hole in each hole size state. The positioning structures correspond to the movable blades. The rotation element is rotatable with respect to the positioning element and is configured to rotate the movable blades to adjust a size of the light passable hole. There are matte structures disposed on each inner surface. Each matte structure is single structure extending towards the optical axis, such that at least part of the contour of the light passable hole has an undulating shape at least in several hole size states.
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公开(公告)号：US12271054B2
公开(公告)日：2025-04-08
申请号：US18398661
申请日：2023-12-28
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ming Chen , Hsin-Hsuan Huang
Abstract: The present disclosure provides an imaging optical lens assembly, including, in order from an object side to an image side: a first lens element with negative refractive power having an object-side surface being concave in a paraxial region, a second lens element with positive refractive power, a third lens element with negative refractive power, a fourth lens element with positive refractive power, and a fifth lens element with negative refractive power having an image-side surface being concave in a paraxial region and at least one convex shape in an off-axial region on the image-side surface, wherein the imaging optical lens assembly has a total of five lens elements.
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公开(公告)号：US11852787B2
公开(公告)日：2023-12-26
申请号：US17723558
申请日：2022-04-19
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Fuh-Shyang Yang , Kuan-Ming Chen
IPC: G02B13/00 , G02B27/00 , G02B27/30 , G06F1/16 , H04N9/31 , H04N13/344 , H04N13/383 , H04N23/55 , H04N23/90
CPC classification number: G02B13/003 , G02B27/0093 , G02B27/30 , G06F1/163 , H04N9/3147 , H04N13/344 , H04N13/383 , H04N23/55 , H04N23/90
Abstract: A head-mounted device includes a first light field camera, a second light field camera, a first light field display, a second light field display and a supporting structure. Each of the first light field camera and the second light field camera includes, in order from an object side to an image side, a lens group, a collimator and an image sensor. Each of the lens groups includes a plurality of lens units. The lens units are arranged in a two-dimensional lens array, and each of the lens units includes a lens container and a plurality of lens elements. A first engaging structure is disposed between at least two adjacent lens elements of the lens elements.
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公开(公告)号：US11635595B2
公开(公告)日：2023-04-25
申请号：US17237300
申请日：2021-04-22
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ming Chen , Tsung-Han Tsai , Hsin-Hsuan Huang
Abstract: This disclosure provides an optical image capturing lens system comprising: a positive first lens element having a convex object-side surface, a negative second lens element, a positive third lens element having a convex image-side surface, a fourth lens element having a concave object-side surface and a convex image-side surface; and a positive fifth lens element having a convex object-side surface at a paraxial region thereof, both of the object-side and image-side surfaces being aspheric, and at least one inflection point is positioned on at least one of the object-side and image-side surfaces thereof. When particular relations are satisfied, the angle at which light projects onto the image plane can be efficiently controlled for increasing the relative illumination and preventing the occurrence of vignetting.
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Patent Agency Ranking
公开(公告)号：US11372216B2
公开(公告)日：2022-06-28
申请号：US16850889
申请日：2020-04-16
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ming Chen , Yu-Tai Tseng , Hsin-Hsuan Huang , Shu-Yun Yang
Abstract: An imaging 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 and a sixth lens element. The first lens element has negative refractive power. The second lens element 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 third lens element has positive refractive power. The fourth lens element has positive refractive power. The fifth lens element has negative refractive power. The sixth lens element has positive refractive power. The imaging optical lens system has a total of six lens elements.
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公开(公告)号：US10379322B2
公开(公告)日：2019-08-13
申请号：US15628992
申请日：2017-06-21
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chien-Hsun Wu , Tzu-Chieh Kuo , Kuan-Ming Chen
Abstract: An optical imaging system includes five lens elements, the five lens elements being, in order from an object side to an image side: a first lens element having positive refractive power; a second lens element having negative refractive power; a third lens element having positive refractive power; a fourth lens element having positive refractive power; and a fifth lens element having negative refractive power.
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公开(公告)号：US10338348B2
公开(公告)日：2019-07-02
申请号：US15709979
申请日：2017-09-20
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ming Chen , Tsung-Han Tsai , Hsin-Hsuan Huang
Abstract: This disclosure provides an optical image capturing lens system comprising: a positive first lens element having a convex object-side surface, a negative second lens element, a positive third lens element having a convex image-side surface, a fourth lens element having a concave object-side surface and a convex image-side surface; and a positive fifth lens element having a convex object-side surface at a paraxial region thereof, both of the object-side and image-side surfaces being aspheric, and at least one inflection point is positioned on at least one of the object-side and image-side surfaces thereof. When particular relations are satisfied, the angle at which light projects onto the image plane can be efficiently controlled for increasing the relative illumination and preventing the occurrence of vignetting.
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公开(公告)号：US10281684B2
公开(公告)日：2019-05-07
申请号：US15698632
申请日：2017-09-07
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ming Chen , Tsung-Han Tsai , Hsin-Hsuan Huang , Chun-Che Hsueh
Abstract: An optical image capturing 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 positive refractive power has a convex object-side surface. The second lens element and the third lens element have refractive power. The fourth lens element with negative refractive power has a concave object-side surface and a convex image-side surface. The fifth lens element with positive refractive power has a convex object-side surface, wherein at least one inflection point is on at least one surface thereof. The sixth lens element with negative refractive power has a concave object-side surface. The surfaces of the fifth and the sixth lens elements are aspheric. The optical image capturing system has a total of six lens elements.
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公开(公告)号：US10247911B2
公开(公告)日：2019-04-02
申请号：US15603630
申请日：2017-05-24
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan-Ming Chen , Hsin-Hsuan Huang
Abstract: The present disclosure provides an imaging optical lens assembly, including, in order from an object side to an image side: a first lens element with negative refractive power having an object-side surface being concave in a paraxial region, a second lens element with positive refractive power, a third lens element with negative refractive power, a fourth lens element with positive refractive power, and a fifth lens element with negative refractive power having an image-side surface being concave in a paraxial region and at least one convex shape in an off-axial region on the image-side surface, wherein the imaging optical lens assembly has a total of five lens elements.
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