baber/WOPTO huggingface dataset:
Patent JP-2012500312-A (JP)
Title: 水性液体染料を用いたポリ（メタ）アクリレートの着色法及び水性液体染料
IPC: C08L33/04
Filed: 2009-07-10
Abstract: 本発明は、熱可塑性プラスチックを着色するための水性着色調製物に関する。
Patent JP-2012501870-A (JP)
Title: 条導体を備えたプラスチック表皮材
IPC: B60K37/00
Filed: 2009-07-30
Abstract: 導電性材料とプラスチック表皮材のプラスチック材料の混合物からなる領域がプラスチック表皮材内に配置されている、コーティングされた物品の表面被覆材としての単層または多層のプラスチック表皮材。
Patent JP-2012503051-A (JP)
Title: 改善された晶出挙動を有するポリエステルジオール系ポリウレタン
IPC: C08G18/42
Filed: 2009-09-16
Abstract: 本発明のポリウレタンは、偶数の炭素原子を有するジカルボン酸と奇数の炭素原子を有するジオールから形成されるポリエステルジオールに基づいている。 【選択図】なし
Patent JP-2012502805-A (JP)
Title: 動的ビームアレイを用いるフォトニックミリング
IPC: B23K26/04
Filed: 2009-09-17
Abstract: レーザ処理システムは、被加工物に対してビーム送達座標を整列させるビーム位置決めシステムを含む。ビーム位置決めシステムは、この整列に対応する位置データを生成する。また、システムは、パルスレーザ光源と、パルスレーザ光源からレーザパルスを受け取るビームレット生成モジュールとを含む。ビームレット生成モジュールは、レーザパルスからビームレットアレイを生成する。ビームレットアレイは、複数のビームレットパルスを含む。システムは、更に、ビームレットアレイ内の各ビームレットパルスの振幅を選択的に変調するビームレット変調器と、変調されたビームレットアレイを、位置データに対応する被加工物上の箇所の１つ以上の標的に集光するビームレット送達光学素子とを備える。 【選択図】  図６
Patent JP-2012508023-A (JP)
Title: 対立遺伝子増幅バイアス
IPC: C12Q1/68
Filed: 2009-11-06
Abstract: 核酸解析の方法を提供する。例示の方法では、対立遺伝子増幅バイアスを使用して、低い対立遺伝子画分で存在する標的核酸を選好的に増幅する。 【選択図】なし
Patent JP-2012508031-A (JP)
Title: １以上の組み合わせ変異を含むプロテアーゼ
IPC: C12N15/09
Filed: 2009-11-10
Abstract: 【課題】遺伝子組み換えされたプロテアーゼ変異体の分野において、悪条件に耐えることができ、かつ当該分野で現在知られている活性よりも改善された活性を保持しまたは獲得することができる酵素系の必要性が依然存在する。   【解決手段】本発明は、遺伝子組み換えされたプロテアーゼ変異体を提供する。特に、該プロテアーゼ変異体は、選択された表面位置における組み合わせ変異を含み、この組み合わせ変異は該酵素の電荷および／または疎水性に影響を与えて、得られた変異体酵素の選択された用途における少なくとも１の所望の特性を高める。該プロテアーゼ変異体を含む組成物および同を用いる方法も提供される。   【選択図】図５
Patent JP-2012509658-A (JP)
Title: Ｉｌ−１３に結合するリガンド
IPC: A61P11/02
Filed: 2008-12-17
Abstract: インターロイキン−１３（ＩＬ−１３）にに対し、またはＩＬ−４とＩＬ−１３に対し特異的に結合するリガンドが開示されている。また、これらの使用方法も開示されている。特に、肺疾患、例えば、アレルギー性喘息、のようなＩＬ−１３媒介疾患の治療のためのこれらの使用が記載されている。このリガンドは、有力なＩＬ−１３結合速度を有している。リガンドが、ヒトＩＬ−１３と一つまたは複数の霊長類ＩＬ−１３の間の交差反応性を有することも記載されている。リガンドは、原核細胞中で良好に発現する。 【選択図】なし
Patent JP-2012510008-A (JP)
Title: 道路舗装材料のリサイクル
IPC: E01C7/26
Filed: 2009-11-23
Abstract: 本発明は、粉末道路舗装材料、無機質材料、及び/又はガラス、ポリマー反応混合物、必要に応じて更に添加剤を含む混合物を調製し、それを基盤材料に施与し、それを硬化することにより、道路、軌道及び交通手段によって使用される他の領域の作製方法に関する。本発明は、更に、この種の方法により得ることができる道路、軌道、及び交通手段により使用される他の領域に関する。 【選択図】なし
Patent JP-2012510024-A (JP)
Title: ディーゼルエンジンの燃料弁ノズル
IPC: B22F7/08
Filed: 2010-10-29
Abstract: 内燃エンジン、特に２ストローククロスヘッドエンジン、の燃料弁ノズル（１）が、合金鋼のコア部分（４）を備えた弁ヘッド（３）及び燃焼室に向かうノズルの表面を形成する外側面（５）を有する。外側面（５）は、ニッケルベース、クロムベース及びコバルトベースでの高温腐食抵抗合金の微粒子種材料から形成される。この微粒子種材料は、粘着性の層に結合される。少なくともコア部分（４）への遷移区域において、外側面（５）の微粒子材料内の粒子は、外側面及びコア部分を鍛造することにより生じるせん断歪によって卵形状又は細長い形状へと変形され、鍛造された外側面（５）は、少なくとも９８．０％の密度を有する。 【選択図】図２
Patent JP-2012511359-A (JP)
Title: 薬剤送達デバイスのためのリセット可能な駆動機構、及び、薬剤送達デバイス
IPC: A61M5/315
Filed: 2009-12-09
Abstract: 薬剤送達デバイスのためのリセット可能な駆動機構が開示され、該機構は、ハウジング（１３，１７，４０）、薬剤の用量を送達するため、ハウジングに対して第２の方向に、回転可能である駆動部材（２０）、駆動部材が第２の方向に回転するとき、駆動部材によってハウジングに対して遠位方向に駆動するように適合されるピストン・ロッド（１２）、停止部材が駆動部材と係合するとき、ハウジングに対して第２の方向と反対向きである第１の方向への駆動部材の回転を防止するように適合される停止部材（２６）、及び送達位置（Ｄ）とリセット位置（Ｒ）の間で、ハウジングに対して可動であるクラッチ部材（５８）を含み、ここでクラッチ部材が送達位置にあるとき、停止部材と駆動部材が係合され、駆動部材のハウジングに対する第１の方向への回転が防止され、クラッチ部材がリセット位置にあるとき、駆動部材と停止部材が係合解除され、駆動部材がハウジングに対して第１の方向に回転可能であり、そしてピストン・ロッドがハウジングに対して近位の方向に可動である。
Patent JP-2012513555-A (JP)
Title: 異なる填塞材料を備える入口面および出口面を有する濾過構造
IPC: B01D53/94
Filed: 2009-12-22
Abstract: 本発明は、多孔質濾過壁によって隔てられた、相互に平行な軸の縦方向の隣接する流路のアレイを含むハニカムタイプの濾過構造体に関し、フィルタの第１の端に配置された填塞物を構成する材料は、壁と同じ組成を実質的に有し、および壁と構造的に連続的であり、フィルタの第２の端に配置された填塞物は、第１の端に配置された填塞物と化学的に異なる組成および／または構造的に異なる組成を有する。 【選択図】図１
Patent JP-2012518538-A (JP)
Title: ファウリングが低減された流体分離システム
IPC: B01D69/06
Filed: 2009-12-13
Abstract: 流体分離システムが、特徴部のパターンを有する分離膜を含む。
Patent JP-2013141465-A (JP)
Title: Safety lock device
Inventor: MATSUMURA MITSUHIRO
IPC: A47B88/00
Filed: 2012-01-06
Abstract: PROBLEM TO BE SOLVED: To provide a safety lock device for preventing remaining drawer bodies from being drawn out while other drawer bodies are drawn out.SOLUTION: A safety lock device includes: a locking bar 30 provided in a casing liftably along the drawer bodies from the drawer body 2 at the lowest position to the drawer body 2 at the highest position, and having stoppers 37 corresponding to the respective drawer bodies 2; resilient urging members 50 corresponding to the respective drawer bodies 2 for raising the locking bar; and connection members 60 connected to the locking bar for transmitting the upward resilient urging of the resilient urging members to the locking bar. Each drawer body 2 includes: an elastic force canceling wall 26 for canceling the upward resilient urging of the resilient urging member by pressing the connection member downward while the drawer body 2 is stored; and a hitting wall 27 abutting on the stopper while the locking bar is raised. When cancellation of the resilient urging by the elastic force canceling wall of the drawn drawer bodies 2 is released, the locking bar is raised, and the stoppers abuts on the hitting walls of the remaining drawer bodies 2.
Patent JP-2013142739-A (JP)
Title: Deflection filter device for lens barrel
Inventor: IMAI TOMONORI
IPC: G03B11/00
Filed: 2012-01-10
Abstract: PROBLEM TO BE SOLVED: To provide a deflection filter device for a lens barrel, the filter device being able to be reduced in thickness in the direction of an optical axis although a deflection filter can be rotated around its axis on a filter support member.SOLUTION: This device comprises at least three auxiliary gears 54, 61, 62, and 63 supported on the filter support members 21 and 28 so as to be rotatable around the axis parallel to an optical axis A and engaged with a filter support gear 65 from a periphery side, thereby supporting the filter support gear such that the support gear is rotatable.
Patent JP-2013141689-A (JP)
Title: Seam welding method and seam welding device
Inventor: KANAYA KOHEI
IPC: B23K11/24
Filed: 2012-01-11
Abstract: PROBLEM TO BE SOLVED: To improve welding quality for welding a bent part without increasing cost in a seam welding device.SOLUTION: The seam welding device 1 includes: a storage part 13 for storing association data 18 associating a predetermined angular speed with a rotation speed; an angular speed calculation part 14 for calculating the angular speed based on a curvature and welding speed at the bent part of a welding locus indicated by teaching point data 17; and a rotation speed correction part 16 which obtains the rotation speed corresponding to the angular speed calculated by the angular speed calculation part 14 based on the association data 18 and sets the obtained rotation speed as rotation speed of roller electrodes 6a, 6b when welding the bent part.
Patent JP-2012080590-A (JP)
Title: Image pickup device
Inventor: KANZAKI TOMOHIKO
IPC: H04N5/225
Filed: 2012-01-12
Abstract: PROBLEM TO BE SOLVED: To provide an image pickup device that allows a user to set functions relating to the recording format of image data without complicated operation.SOLUTION: An image pickup device 1 has a direct key 13 that is used to set functions relating to the recording format of image data obtained by taking images. The recording format is set to at least one of JPEG format and RAW format by operating an operation key twice or more. The image data is recorded in both compression file format and the RAW format by pressing the direct key 13 once. The recording format is automatically reset to the recording format before the operation key is pressed.
Patent JP-2013145430-A (JP)
Title: Usb host device and display device
Inventor: KAWAUCHI HARUHIKO
IPC: G06F1/26
Filed: 2012-01-13
Abstract: PROBLEM TO BE SOLVED: To provide a technique to automatically turn on the power of a TV by swiftly detecting a USB device inserted into a USB terminal of the TV in standby mode of the TV without any special response of the inserted USB device or a complicated system modification on the TV.SOLUTION: In a standby mode, when a USB device 90 is inserted into a USB interface section 62, a Vbus terminal 63 is grounded via the USB device 90. Then, a current flows on a backup power line L2; a potential difference is generated between a base and an emitter of a transistor 74; the transistor 74 turns on; a current flows between the emitter and a collector; and the current flows to the ground via a second resistance R2. As a result, a potential difference is generated between a collector side output A of the transistor 74 and the ground. A main control section 21 obtains the voltage change. By obtaining the voltage change, the main control section 21 turns on the main power.
Patent JP-2013146669-A (JP)
Title: Air filter, and method of producing the same
Inventor: SANO YOSHIYA
IPC: B29C39/10
Filed: 2012-01-18
Abstract: PROBLEM TO BE SOLVED: To enable production of a high performance filter such as a HEPA filter that can be used for a long period of time while maintaining its high performance, by way of insert molding.SOLUTION: An air filter 60 is a HEPA filter, and includes a filter medium pack 40 formed of a sheet-shaped filter medium folded into a pleat shape, and a filter frame 50 formed by insert molding to surround the outer periphery of the filter medium pack 40 to hold the filter medium pack 40. The sheet-shaped filter medium includes a glass fiber and a plastic fiber, wherein the content of the glass fiber is, for example, 20 to 50 wt.%. The plastic fiber, for example, is a polyester fiber.
Patent JP-2015046204-A (JP)
Title: Optical element and optical head device including the same
Inventor: MINAMI KAZUHIRO
IPC: G02B13/18
Filed: 2012-01-19
Abstract: PROBLEM TO BE SOLVED: To provide an object lens capable of improving the diffraction efficiency to thereby solve a problem in conventional object lens.SOLUTION: The object lens has a step-like diffraction structure. The step-like diffraction structure includes: a step surface 250; a side wall surface 260; and a connection part 270. The step surface 250 is formed so that the surface is not oriented to the optical axis A in one cycle. The side wall surface 260 is formed so that the surface thereof is oriented to the optical axis A. The step surface 250 is inclined with respect to a plane M perpendicular to the optical axis A and the optical axis A. The connection part 270 between the side wall surface 260 and the step surface 250, which is positioned further away from the optical axis A in the step surfaces 250 connected to the side wall surface 260, is formed in a generally curved surface with curvature radius R[um]. The curvature radius R satisfies the following formula; 0.2≤R≤0.0135×(sqrt(f)-1).
Patent JP-2013148019-A (JP)
Title: Gas engine
Inventor: TANAKA DAIKI
IPC: F02M21/02
Filed: 2012-01-19
Abstract: PROBLEM TO BE SOLVED: To provide a technique capable of enhancing responsibility when inputting load, in a gas engine capable of executing fuel injection turbocharging operation by passing combustion air introduced into an intake channel through the blower of a turbocharger, forming mixed gas by injecting fuel gas compressed by a gas compressor to the combustion air passing through the blower of the turbocharger, and introducing the formed mixed gas into a combustion chamber compressing the same and combusting the same.SOLUTION: A gas engine is constituted so as to be able to execute premixing forcible turbocharging operation in which a mixed gas M is formed in an intake channel 7 by mixing fuel gas G introduced into a gas channel 10 to combustion air A introduced into the intake channel 7, at least a portion of the formed mixed gas M is introduced into the gas channel 9 and is compressed by a gas compressor, and the compressed mixed gas M is introduced a combustion chamber 2, is compressed, and is combusted, instead of fuel injection turbocharging operation.
Patent JP-2013148474-A (JP)
Title: Insulation abnormality detection device
Inventor: YAMAMOTO SATOSHI
IPC: G01R31/02
Filed: 2012-01-19
Abstract: PROBLEM TO BE SOLVED: To provide an insulation abnormality detection device capable of detecting an abnormality of a coupling capacitor.SOLUTION: A switch 36 is switchable between a first state in which a second electrode of a coupling capacitor 33 is grounded through an insulation resistance 53 and a second state in which the second electrode of the coupling capacitor 33 is grounded through a pseudo resistance 34. A CPU 42 detects a decrease in resistance value of the insulation resistance 53 from a signal taken out of a connection point A between a detection resistance 32 and the coupling capacitor 33 when the first set is set by the switch 36. The CPU 42 detects abnormality in an oscillation signal transmission system including an oscillation circuit 31, the detection resistance 32 and the coupling capacitor 33 from a signal taken out of the connection point A when the second state is set by the switch 36.
Patent JP-2013147275-A (JP)
Title: Container
Inventor: OWASHI TAKASHI
IPC: B65D6/18
Filed: 2012-01-20
Abstract: PROBLEM TO BE SOLVED: To enhance the strength of a container than before, from which a load can be put in/out from a lateral side.SOLUTION: In a container 10, a load can be put in/out through a side face opening 30W by opening a side face door 40. In addition, a pair of door hinge recesses 37 and 41 are formed at the lower end edge of an opening of the side face opening 30W and at the lower end of the side face door 40, and a relay member 50 for coupling the side face door 40 with the lower end opening edge of the side face opening 30W is accommodated in a communicating space of the door hinge recesses 37 and 41, thereby allowing a lower surface of the side face door 40 to be adjacent to the lower end opening edge of the side face opening 30W. When the side face door 40 comes into a standing attitude, a door locking protrusion 42 on the lower surface of the side face door 40 engages in a recess-and-protrusion form with a door locking recess 32 of the lower end opening edge of the side face opening 30W, so as to restrict movement of the side face door 40 outward of the lower end. Thus, strength of the container 10 from which a load can be put in/out from lateral sides can be enhanced than before.
Patent JP-2013147186-A (JP)
Title: Hybrid propulsion ship
Inventor: FUJIWARA TAKUMA
IPC: B63H20/00
Filed: 2012-01-20
Abstract: PROBLEM TO BE SOLVED: To provide a hybrid propulsion ship capable of demonstrating the performance of an inboard machine and an outboard machine, respectively, and capable of being applicable to various ships without controlling respective advantages based on the propulsion by an internal combustion engine and the propulsion by an electric motor.SOLUTION: The hybrid propulsion ship includes an internal combustion type propulsion mechanism 11 consisting of an internal combustion engine 1, a power transmission shaft 5 for transmitting the power generated by the internal combustion engine 1, and a first propeller 6 to be coupled with the power transmission shaft 5, and an electric propulsion mechanism 12 consisting of an electric motor 4, a drive unit 3 for transmitting the power generated by the electric motor 4, and a second propeller 8 to be coupled with the drive unit 3. The hybrid propulsion ship is capable of selecting any one of the internal combustion type propulsion mode for propelling a hull body 10 by driving the internal combustion type propulsion mechanism 11, the electric propulsion mode for propelling the hull body 10 by driving the electric propulsion mechanism 12, and the dual propulsion mode for propelling the hull body 10 by driving both the internal combustion type propulsion mechanism 11 and the electric propulsion mechanism 12.
Patent JP-2013153352-A (JP)
Title: Relay device, receiving device, transmission system, communication system, and relay method
Inventor: NAKATSUGAWA KEIICHI
IPC: H04L47/32
Filed: 2012-01-25
Abstract: PROBLEM TO BE SOLVED: To reduce delay time.SOLUTION: A buffer 151 stores packets sorted into a transmission device 150 among a plurality of ordered transmission packets. When disposal conditions of the packet stored in the buffer 151 are satisfied, a selection part 152 selects the packet to be disposed from the packets stored in the buffer 151. An addition part 153 and a transmission part 155 add and transmit disposal information which can specify an order of the packet selected by the selection part 152 and indicates that the selected packet is disposed to a packet whose order is prior to the selected packet.
Patent JP-2013152201-A (JP)
Title: Radar apparatus
Inventor: DAIMON MAKOTO
IPC: G01S13/93
Filed: 2012-01-26
Abstract: PROBLEM TO BE SOLVED: To provide a radar apparatus capable of measuring an orientation of an object in a short time and with high accuracy.SOLUTION: A radar apparatus comprises: signal generating means 10; a phase shifter 20; transmission antennae 40-1-40-4; a receiving antenna 50; and signal processing means 70. Three signals whose frequencies are orthogonal to one another are generated and output. The three signals are divided into four parts, and are output to the transmission antennae 40-1-40-4 when phase differences are respectively controlled and then combined. The transmission antennae 40-1-40-4 simultaneously emit beams toward three directions different for respective frequencies of the three signals. The signal processing means 70 performs a frequency analysis of a received signal, and measures an orientation of an object from signal strengths in frequencies of the three signals. By frequency orthogonality, beams can be simultaneously emitted to a plurality of directions without each of the beams being made to intervene. Further, a frequency band can be efficiently and effectively used as a narrow band.
Patent JP-2013155620-A (JP)
Title: Air compressor
Inventor: MIURA MASAHIRO
IPC: F04B41/00
Filed: 2012-01-27
Abstract: PROBLEM TO BE SOLVED: To provide an air compressor which is restrained from tipping.SOLUTION: An air compressor is provided including a driving part 3 and a compressed air generating part 4 for generating compressed air, a tank part 2 arranged under the driving part 3 and the compressed air generating part 4 and storing the generated compressed air, a control circuit part 7 for controlling operation of the driving part 3 and the compressed air generating part 4 and arranged in a side part of a tank, and a power cord 7A connected to an external power source and supplying electric power for driving the driving part 3 and the compressed air generating part 4. In the air compressor, vibration-proofing support rubber legs 21A and 22A grounded on a floor surface are arranged in a lower part of the tank part 2, and proximity parts 24A proximate to the floor surface are arranged in a lower part of the control circuit part 7.
Patent JP-2013100181-A (JP)
Title: Cargo handling method of raw material by continuous unloader
Inventor: KASHIMURA SHIGERU
IPC: B65G67/60
Filed: 2012-01-27
Abstract: PROBLEM TO BE SOLVED: To provide a cargo handling method of a raw material by a continuous unloader, capable of improving cargo handling efficiency over the whole raw material carrying line, by preventing a slip of an iron manufacturing raw material in the raw material carrying line, in cargo handling work of the iron manufacturing raw material of including moisture.SOLUTION: This method is provided for transferring the raw material S in a hold of the ship outside by scraping it off by a bucket 14 of the continuous unloader, and includes a first process of forming a recessed part 45 on a surface of the raw material S by scraping off a surface part of the loaded raw material S by the bucket 14, a second process of storing the moisture W oozing out of the raw material S in the recessed part 45, a third process of discharging water W gathered in the recessed part 45 to the ship outside by scooping it up by the bucket 14, and a fourth process of transferring the raw material S which has discharged the moisture W to the ship outside by scraping it off by the bucket 14.
Patent JP-2013155337-A (JP)
Title: Epoxy resin composition for laminated board, laminated board, and integrated circuit
Inventor: TAKAHASHI ATSUSHI
IPC: B32B15/092
Filed: 2012-01-31
Abstract: PROBLEM TO BE SOLVED: To provide an epoxy resin composition for laminated boards, which is in particular excellent in dielectric properties becoming important when the epoxy resin composition is used for laminated board applications, has a low water absorption rate, and is also excellent in heat resistance (high Tg).SOLUTION: An epoxy resin composition for laminated boards includes following component (A) and component (B). A laminated board includes the epoxy resin composition for laminated boards and an electroconductive metal. Component (A): an epoxy resin obtained by reacting a bisphenol compound represented by formula (1) and epihalohydrin, wherein the epoxy resin is obtained by reacting 1.00-4.80 mol of epihalohydrin with 1 mol of hydroxyl group of the bisphenol compound represented by the formula (1). Component (B): a phenol-based epoxy resin curing agent and/or a dicyandiamide-based epoxy resin curing agent.
Patent JP-2013156610-A (JP)
Title: Terminal processing structure of planar optical routing body, and method for terminal processing
Inventor: MATSUKURA TOSHIO
IPC: G02B6/36
Filed: 2012-02-01
Abstract: PROBLEM TO BE SOLVED: To provide a terminal processing structure of a planar optical routing body capable of improving mass productivity by improving workability relating to an attachment of an optical connector, and a method for terminal processing.SOLUTION: A planar optical routing body 1 includes a plurality of terminals 2 to which optical connectors 3 are attached respectively. Each of the optical connectors 3 is provided as a fitting section of another optical connector 15 to be an object of optical connection. Each of the optical connectors 3 includes: a first optical coupling component 16 as a structure; and a second optical coupling component 17 engaged with the first optical coupling component 16. The first optical coupling component 16 and the second optical coupling component 17 are engaged so as to clamp a plurality of optical fibers 6 therebetween. After that, when adhesive 18 is hardened, the attachment of the optical connector 3 to the terminal 2 is completed.
Patent JP-2013162720-A (JP)
Title: Switching element drive device
Inventor: HAMANAKA YOSHIYUKI
IPC: H02M1/08
Filed: 2012-02-08
Abstract: PROBLEM TO BE SOLVED: To solve the problem that when a function to lower a rate at which a collector current decreases goes wrong, the temperature of a switching element S¥# may excessively rise or the switching element S¥# may be subjected to excessively high voltage.SOLUTION: To turn the switching element S¥# off, a first discharge switching element 32 is turned on, and then the first discharge switching element 32 is turned off in a mirror period and further a second discharge switching element 36 is turned on. At this time, presence of abnormality is diagnosed on the basis of whether an interval from the timing at which a gate voltage Vge starts lowering upon the off operation to the timing at which a voltage drop amount (sense voltage Vse) of a resistor 38 connected to a sense terminal St of the switching element S¥# reaches maximum is within an allowable range.
Patent JP-2013164447-A (JP)
Title: Optical fiber connection member
Inventor: TANAKA MASANORI
IPC: G02B6/24
Filed: 2012-02-09
Abstract: PROBLEM TO BE SOLVED: To provide an optical fiber connection member capable of preventing a large gap from occurring by determining an occurrence of the large gap between end surfaces of optical fibers to be connected at the beginning of connection.SOLUTION: A translucent member 4 is disposed at the middle between optical fibers A and B, and the optical fibers A and B are respectively inserted into a groove and included in the translucent member 4. In the translucent member 4, an angle θ formed between a normal line 4H of the translucent member 4 and a central axis of a core AC is larger than 0 degree at an intersection point AI between an extension line of the central axis of the core AC and a boundary surface 4S of the translucent member 4. That is, the translucent member 4 is arranged obliquely with respect to the core AC. A translucent member having flexibility is used to realize the translucent member 4 and maintain a connection state.