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公开(公告)号：US20170293072A1
公开(公告)日：2017-10-12
申请号：US15632973
申请日：2017-06-26
Applicant: TOTO LTD.
Inventor： Sho KONDO , Hirotsugu AGATSUMA , Satoshi HAKOZAKI , Satoshi KANEYUKI , Kohei TOMINAGA , Hiroki SATO
CPC classification number: G02B6/421 , G02B6/02004 , G02B6/02033 , G02B6/38 , G02B6/3846 , G02B6/42
Abstract: An optical receptacle includes: a fiber stub including an optical fiber, a ferrule, and an elastic member; and a holder holding the fiber stub, the optical fiber including a cladding and a core for conducting light, the ferrule having a through-hole fixing the optical fiber, the elastic member fixing the optical fiber in the through-hole, the fiber stub having one end surface on the ferrule side, and another on an opposite side, the optical fiber including first and third portions on the opposite end surface sides and a second portion therebetween, a core diameter of the first portion being smaller than the third portion, and a core diameter of the second portion increasing from the first portion side toward the third portion side.
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公开(公告)号：US20190278033A1
公开(公告)日：2019-09-12
申请号：US16420509
申请日：2019-05-23
Applicant: TOTO LTD.
Inventor： Kohei TOMINAGA , Satoshi KANEYUKI , Sho KONDO , Hirotsugu AGATSUMA , Satoshi HAKOZAKI , Hiroki SATO
IPC: G02B6/38
Abstract: A pigtail-type optical receptacle includes a tubular ferrule having a through-hole extending in an axial direction, an optical fiber inserted into the through-hole such that part of the optical fiber extends outside the ferrule, a protective member covering the part of the optical fiber extending outside the ferrule, a tubular sleeve mounted on a front end side, outer surface of the ferrule, a holder tubular having holding the rear end side of the ferrule, and a tubular housing covering the ferrule and at least a portion of the sleeve. The ferrule through-hole includes first and second regions, the second region being disposed rearward of the first region, and the housing engaging the outer surface of the holder rearward of the first region.
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公开(公告)号：US20180039028A1
公开(公告)日：2018-02-08
申请号：US15723394
申请日：2017-10-03
Applicant: TOTO LTD.
Inventor： Sho KONDO , Hirotsugu AGATSUMA , Satoshi HAKOZAKI , Satoshi KANEYUKI
CPC classification number: G02B6/3847 , G02B6/262 , G02B6/3825 , G02B6/3846 , G02B6/3863 , G02B6/3866 , G02B6/3874
Abstract: A ferrule containing an optical fiber, the ferrule having an end surface which is polished into a convex spherical configuration on a side to be optically connected to one other member, and a foreign matter movement suppressor is provided with the end surface for suppressing movement of foreign matter moving from an outer circumferential portion of the ferrule toward a central portion of the end surface due to inserting and removing the ferrule. The foreign matter movement suppressor includes a first portion of the end surface which does not directly contacting the one other member, and an average height of a surface of the first portion is 0.305 micrometers or more, and a skewness of the surface of the first portion is −0.2 or less.
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公开(公告)号：US20160161679A1
公开(公告)日：2016-06-09
申请号：US14900376
申请日：2014-06-27
Applicant: TOTO LTD.
Inventor： Sho KONDO , Hirotsugu AGATSUMA , Satoshi HAKOZAKI , Satoshi KANEYUKI
IPC: G02B6/38
CPC classification number: G02B6/3847 , G02B6/262 , G02B6/3825 , G02B6/3846 , G02B6/3863 , G02B6/3866 , G02B6/3874
Abstract: According to an aspect of the invention, an optical receptacle, comprising: a fiber stub including a ferrule containing an optical fiber conducting light; a holder holding the fiber stub; and a sleeve, one end of the sleeve being capable of holding a tip of the fiber stub, one other end of the sleeve being capable of holding a plug ferrule inserted into the optical receptacle, the ferrule including a foreign matter movement suppressor in an end surface of the ferrule, the end surface being polished into a convex spherical configuration on a side to be connected to the plug ferrule, the foreign matter movement suppressor suppressing movement of foreign matter moving, due to inserting and removing the plug ferrule, from an outer circumferential portion of the ferrule toward a central portion of the end surface. It is possible to prevent the loss occurring due to the foreign matter at the outer circumferential portion of the fiber stub moving to the central portion of the end surface of the ferrule when repeatedly inserting and removing the plug ferrule into and from the optical receptacle; and it is possible to reduce the Wiggle loss by maintaining the length where the sleeve holds the fiber stub.
Abstract translation: 根据本发明的一个方面，一种光学插座，包括：一个光纤短截线，包括一个包含导光光纤的套圈; 夹持纤维束的支架; 以及套筒，所述套筒的一端能够保持所述纤维短截线的末端，所述套筒的另一端能够保持插入到所述光学容座中的插头套圈，所述套圈的末端包括异物移动抑制器 套筒的表面，端面被抛光成与插头套圈连接的一侧上的凸形球形，异物移动抑制器抑制由于插入和移除插头套圈而导致的异物移动从外部移动 套圈的周向部分朝向端面的中心部分。 当插入插头插入光纤插座并从光插座中取出插头套圈时，可以防止在纤维短棒的外周部分移动到套圈端面的中心部分的异物发生的损失; 并且可以通过保持套筒保持纤维束的长度来减小摆动损失。
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公开(公告)号：US20150316727A1
公开(公告)日：2015-11-05
申请号：US14697867
申请日：2015-04-28
Applicant: TOTO LTD.
Inventor： Sho KONDO , Hirotsugu AGATSUMA , Satoshi HAKOZAKI , Satoshi KANEYUKI
IPC: G02B6/38
CPC classification number: G02B6/4292 , G02B6/3822 , G02B6/3826 , G02B6/3846 , G02B6/3851 , G02B6/3855 , G02B6/3869 , G02B6/421
Abstract: According to one embodiment, an optical receptacle includes a fiber stub including an optical fiber, and a ferrule having a through-hole through which the optical fiber is fixed; a sleeve holding a portion of the fiber stub; a holder holding a portion of the fiber stub on an opposite side to a side that is held by the sleeve; an accommodation unit accommodates at least a portion of the fiber stub and the sleeve, an end surface of the fiber stub being formed as a convex spherical surface inclined with a specific angle with respect to a plane that is orthogonal to a center axis of the optical fiber, the end surface being optically connected to a plug ferrule to be inserted into the sleeve, the holder being provided with a positioning unit controlling an inclined direction of the end surface of the fiber stub.
Abstract translation: 根据一个实施例，光学插座包括具有光纤的光纤短截线和具有固定光纤的通孔的套圈; 保持纤维束的一部分的套筒; 保持在与所述套筒保持的一侧相反的一侧的所述纤维短截线部的保持架; 容纳单元容纳纤维短截线和套筒的至少一部分，纤维短截线的端面形成为相对于与光学器件的中心轴正交的平面以特定角度倾斜的凸球面 纤维，端面光学地连接到插入套筒的插头套圈中，保持器设置有控制纤维束端面的倾斜方向的定位单元。
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Patent Agency Ranking
公开(公告)号：US20210041636A1
公开(公告)日：2021-02-11
申请号：US17069225
申请日：2020-10-13
Applicant: TOTO LTD.
Inventor： Sho KONDO , Hirotsugu AGATSUMA , Satoshi KANEYUKI , Satoshi HAKOZAKI , Hiroki SATO , Kohei TOMINAGA
Abstract: There are provided an optical receptacle having an optical fiber including a first portion on another end surface side, a third portion on one end surface side, and a second portion between the first portion and the third portion; a core diameter at the first portion is smaller than the core diameter at the third portion; the core diameter at the second portion increases from the first portion side toward the third portion side; a first elastic member is provided between the optical fiber and an inner wall of a through-hole; a holder holds the another end surface side of a fiber stub; and the sleeve holds the one end surface side of the fiber stub.
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公开(公告)号：US20190212501A1
公开(公告)日：2019-07-11
申请号：US16356479
申请日：2019-03-18
Applicant: TOTO LTD.
Inventor： Hirotsugu AGATSUMA , Satoshi HAKOZAKI , Hiroki SATO , Satoshi KANEYUKI , Kohei TOMINAGA , Arato SUZUKI
CPC classification number: G02B6/3846 , G02B6/02 , G02B6/02004 , G02B6/02033 , G02B6/30 , G02B6/36 , G02B6/42 , G02B6/421
Abstract: An optical receptacle includes a fiber stub, a block, and a first elastic member. The fiber stub includes an optical fiber, and a ferrule provided on one end side of the optical fiber. The block is separated from the ferrule and has one end surface, an other end surface, and a through-hole extending from the one end surface to the other end surface. A portion of the optical fiber protrudes from the ferrule and is inserted into the through-hole. The first elastic member fixes the optical fiber in the through-hole. The portion of the optical fiber includes first to third portions. The second portion is provided between the first portion and the third portion. A core diameter at the first portion is smaller than a core diameter at the third portion. A core diameter at the second portion increases from the first portion toward the third portion.
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公开(公告)号：US20180314019A1
公开(公告)日：2018-11-01
申请号：US16029172
申请日：2018-07-06
Applicant: TOTO LTD.
Inventor： Kohei TOMINAGA , Satoshi KANEYUKI , Sho KONDO , Hirotsugu AGATSUMA , Satoshi HAKOZAKI , Hiroki SATO
CPC classification number: G02B6/3869 , G02B6/3837 , G02B6/3874 , G02B6/4285 , G02B6/4292
Abstract: A pigtail-type optical receptacle includes a ferrule, an optical fiber, a protective member, a sleeve, and a holder. The ferrule has a through-hole extending in an axial direction. The optical fiber is held by the ferrule in a state of being inserted into the through-hole and extends outside the ferrule from a rear end side of the ferrule. The protective member covers a portion of the optical fiber extending outside the ferrule. The sleeve engages an outer surface of the ferrule. The through-hole includes a first region and a second region. The second region is disposed rearward of the first region. The width in an orthogonal direction orthogonal to the axial direction of the through-hole in the second region widens toward the rear end side of the ferrule. The holder holds a portion of the outer surface of the ferrule rearward of the first region.
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公开(公告)号：US20180143382A1
公开(公告)日：2018-05-24
申请号：US15801705
申请日：2017-11-02
Applicant: TOTO LTD.
Inventor： Sho KONDO , Hirotsugu AGATSUMA , Satoshi HAKOZAKI
CPC classification number: G02B6/3846 , G02B6/382 , G02B6/3834 , G02B6/3843 , G02B6/3855 , G02B6/3861 , G02B6/3863 , G02B6/421 , G02B6/4292
Abstract: An optical receptacle includes a fiber stub including an optical fiber, a ferrule having a through-hole fixing the optical fiber, an isolator filled into the through-hole of the ferrule with the optical fiber, and a holder holding the fiber stub. The through-hole has a small and large diameter portions, the optical fiber is disposed in the small diameter portion over the entire region of the optical fiber, the large diameter portion is provided opposite to a side to be optically connected to a plug ferrule, the isolator has substantially the same refractive index as the fiber's core, is filled into the small and large diameter portions, and is polished to cause at least a portion of the isolator to be flat at an end surface portion of the fiber stub on the side with the large diameter portion.
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公开(公告)号：US20190154925A1
公开(公告)日：2019-05-23
申请号：US16234877
申请日：2018-12-28
Applicant: TOTO LTD.
Inventor： Sho KONDO , Hirotsugu AGATSUMA , Satoshi KANEYUKI , Satoshi HAKOZAKI , Hiroki SATO , Kohei TOMINAGA
Abstract: There are provided an optical receptacle having an optical fiber including a first portion on another end surface side, a third portion on one end surface side, and a second portion between the first portion and the third portion; a core diameter at the first portion is smaller than the core diameter at the third portion; the core diameter at the second portion increases from the first portion side toward the third portion side; a first elastic member is provided between the optical fiber and an inner wall of a through-hole; a holder holds the another end surface side of a fiber stub; and the sleeve holds the one end surface side of the fiber stub.
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