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公开(公告)号:US10281676B2
公开(公告)日:2019-05-07
申请号:US14970696
申请日:2015-12-16
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Cheng-Feng Lin , Wei-Hung Weng , Ming-Ta Chou
Abstract: A plastic barrel includes an object-end portion, an image-end portion, an inner tube portion and a plurality of protrusions. The object-end portion includes an outer object-end surface, an object-end hole and an inner annular object-end surface. One side of the inner annular object-end surface is connected to the outer object-end surface and surrounds the object-end hole. The image-end portion includes an outer image-end surface, an image-end opening and an inner annular image-end surface. The inner annular image-end surface is connected to the outer image-end surface and surrounds the image-end opening. The inner tube portion connects the object-end portion and the image-end portion and includes a plurality of inclined surfaces. The protrusions are disposed at least on one of the inner annular object-end surface, the inner annular image-end surface and the inclined surfaces, wherein the protrusions are regularly arranged around the central axis of the plastic barrel.
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公开(公告)号:US20190049702A1
公开(公告)日:2019-02-14
申请号:US16159828
申请日:2018-10-15
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Ming-Ta Chou
IPC: G02B13/00 , G02B17/08 , G02B1/04 , G02B19/00 , G02B5/04 , G02B17/00 , G02B6/26 , G02B23/24 , G02B27/01
CPC classification number: G02B13/0065 , G02B1/04 , G02B5/04 , G02B6/26 , G02B17/00 , G02B17/0856 , G02B17/086 , G02B19/0028 , G02B23/243 , G02B27/0101
Abstract: An optical path folding element includes an incident surface, a path folding surface and an exiting surface. The incident surface allows a light ray to pass into the optical path folding element. The path folding surface folds the light ray from the incident surface. The exiting surface allows the light ray to pass through and depart from the optical path folding element. At least one of the incident surface and the exiting surface includes an optical effective portion and at least one engaging structure symmetrically disposed around the optical effective portion. The engaging structure includes an annular surface portion and an inclined surface portion. The annular surface portion surrounds the optical effective portion, and the inclined surface portion is located between the annular surface portion and the optical effective portion. An angle between the annular surface portion and the inclined surface portion satisfies a specific condition.
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公开(公告)号:US20190033497A1
公开(公告)日:2019-01-31
申请号:US16136354
申请日:2018-09-20
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Ming-Ta Chou
Abstract: A photographing lens module includes a plurality of lens elements, wherein one of the lens elements is a plastic lens element, and at least one surface of an object-side surface and an image-side surface of the plastic lens element includes an effective optical portion and a peripheral portion. The effective optical portion is aspheric. The peripheral portion surrounds the effective optical portion, and includes a plurality of strip rib structures and a plurality of light absorbing coatings. Each of the strip rib structures has a strip shape along a radial direction of an optical axis of the plastic lens element, and the strip rib structures are arranged around the effective optical portion. The light absorbing coatings are coated on the strip rib structures respectively.
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公开(公告)号:US10151900B2
公开(公告)日:2018-12-11
申请号:US15241111
申请日:2016-08-19
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Cheng-Feng Lin , Ming-Ta Chou , Wei-Hung Weng
IPC: G02B7/02
Abstract: A plastic barrel includes an object-end portion, an image-end portion, a tube portion and a plurality of wedge structures. The object-end portion includes an outer object-end surface, an object-end hole and an inner annular object-end surface. The image-end portion includes an outer image-end surface, an image-end opening and an inner annular image-end surface. The tube portion connects the object-end portion and the image-end portion, and includes a plurality of inclined surfaces. The wedge structures are disposed on at least one surface of the inner annular object-end surface, the inner annular image-end surface and the inclined surfaces, wherein the wedge structures are regularly arranged around the central axis, and each of the wedge structures includes an acute end and a tapered section. The tapered section connects the surface, which the wedge structure is disposed on, and the acute end.
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35.
公开(公告)号:US10126529B2
公开(公告)日:2018-11-13
申请号:US15488768
申请日:2017-04-17
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Ming-Ta Chou
Abstract: An optical lens assembly includes at least one lens element, which is a dual molded lens element. The dual molded lens element includes a light transmitting portion and a light absorbing portion. The light absorbing portion is annular and surrounds a central axis, wherein a plastic material and a color of the light absorbing portion are different from a plastic material and a color of the light transmitting portion, the dual molded lens element is made by an injection molding method and formed integrally, the light absorbing portion includes a plurality of second inner strip-shaped structures, the second inner strip-shaped structures are regularly arranged along a circumferential direction of the central axis, and the second inner strip-shaped structures are disposed correspondingly to and connected to a plurality of first inner strip-shaped structures.
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公开(公告)号:US20180196171A1
公开(公告)日:2018-07-12
申请号:US15592558
申请日:2017-05-11
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Chih-Wen Hsu , Ming-Ta Chou
CPC classification number: G02B5/005 , G02B13/001
Abstract: An optical lens assembly includes at least two lens elements and at least one light blocking sheet. Each of the lens elements includes a connecting structure for aligning the two lens elements. Each of the connecting structures includes a connecting surface and a circular conical surface, and a receiving space is formed between the two lens elements. A vertical distance between the receiving space and an optical axis is shorter than a vertical distance between each circular conical surface and the optical axis. The light blocking sheet is received in the receiving space and has a polygonal opening, and an outside diameter of the light blocking sheet is smaller than or equal to a minimum diameter of each circular conical surface.
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公开(公告)号:US09946047B2
公开(公告)日:2018-04-17
申请号:US14256992
申请日:2014-04-20
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Cheng-Feng Lin , Ming-Ta Chou
CPC classification number: G02B7/021 , G02B5/003 , G02B5/005 , G02B7/022 , G02B13/001 , G02B27/0018
Abstract: An annular optical spacer includes a first side portion, a second side portion, an outer annular portion, an inner annular portion and an anti-reflective layer. The second side portion is opposite to the first side portion. The outer annular portion connects the first side portion with the second side portion. The inner annular portion connects the first side portion with the second side portion. A vertical distance between the inner annular portion and a central axis of the annular optical spacer is shorter than a vertical distance between the outer annular portion and the central axis of the annular optical spacer. The inner annular portion includes at least one rugged surface. The rugged surface includes a plurality of annular protruding structures, and the annular protruding structures are coaxially arranged around the central axis. The anti-reflective layer is on top of the rugged surface.
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公开(公告)号:US09798048B2
公开(公告)日:2017-10-24
申请号:US14974314
申请日:2015-12-18
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Ming-Ta Chou
CPC classification number: G02B3/04 , G02B1/041 , G02B7/021 , G02B7/022 , G02B13/0045 , G02B27/0018 , G02B27/0025
Abstract: A plastic lens element includes an effective optical portion and a peripheral portion in order from an optical axis to an edge thereof. The peripheral portion includes a plurality of rib structures, wherein each of the rib structures has a strip shape in a radial direction of the optical axis, and the rib structures are arranged around the effective optical portion and indirectly connected to the effective optical portion.
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公开(公告)号:US09671610B2
公开(公告)日:2017-06-06
申请号:US14851563
申请日:2015-09-11
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Ming-Ta Chou
CPC classification number: G02B5/005 , G02B7/003 , G02B7/021 , G02B13/001 , G02B27/0018 , G02B27/18 , G03B9/02 , G03B11/00
Abstract: A light blocking member includes a first surface, a second surface, an outside surface and an inside surface. The first surface includes a first asymmetric opening. The second surface includes a second asymmetric opening corresponding to the first asymmetric opening. The outside surface disposed between the first surface and the second surface includes a cutting portion and an arch portion. The cutting portion connects the first asymmetric opening and the second asymmetric opening. The inside surface is disposed between the first surface and the second surface. A virtual curved surface is formed between two ends of the cutting portion, and a virtual line is formed between a central point of the virtual curved surface and a central axis of the light blocking member. Two shapes of both of the first asymmetric opening and the second asymmetric opening with respect to two sides of the virtual line are asymmetric.
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公开(公告)号:US20170045735A1
公开(公告)日:2017-02-16
申请号:US14851563
申请日:2015-09-11
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Ming-Ta Chou
CPC classification number: G02B5/005 , G02B7/003 , G02B7/021 , G02B13/001 , G02B27/0018 , G02B27/18 , G03B9/02 , G03B11/00
Abstract: A light blocking member includes a first surface, a second surface, an outside surface and an inside surface. The first surface includes a first asymmetric opening. The second surface includes a second asymmetric opening corresponding to the first asymmetric opening. The outside surface disposed between the first surface and the second surface includes a cutting portion and an arch portion. The cutting portion connects the first asymmetric opening and the second asymmetric opening. The inside surface is disposed between the first surface and the second surface. A virtual curved surface is formed between two ends of the cutting portion, and a virtual line is formed between a central point of the virtual curved surface and a central axis of the light blocking member. Two shapes of both of the first asymmetric opening and the second asymmetric opening with respect to two sides of the virtual line are asymmetric.
Abstract translation: 遮光构件包括第一表面,第二表面,外表面和内表面。 第一表面包括第一非对称开口。 第二表面包括对应于第一不对称开口的第二不对称开口。 设置在第一表面和第二表面之间的外表面包括切割部分和拱形部分。 切割部分连接第一非对称开口和第二非对称开口。 内表面设置在第一表面和第二表面之间。 虚拟曲面形成在切割部分的两端之间,虚拟曲线形成在虚拟曲面的中心点和遮光构件的中心轴线之间。 相对于虚拟线的两侧,第一不对称开口和第二非对称开口两者的两个形状是不对称的。
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