baber/WOPTO huggingface dataset:
Patent JP-2003516139-A (JP)
Title: ニューロンに活性な化合物をスクリーニングするための方法
IPC: C12N5/10
Filed: 2000-12-07
Abstract: (57)【要約】
本発明は、ニューロンで生物活性を呈する化合物をスクリーニング、及び／又は同定するための組成物、及び方法に関する。本発明はまた、ニューロンの単離及び培養、前記単離したニューロンに病的状態を誘導する方法に加えて、前記方法を実施するキットに関する。本発明を、実験的研究、薬物探査、薬物開発などに用いることができる。より詳細には、本発明を、ニューロンに活性な化合物を同定し、及び／又は特徴づけ、及び／又は改善することに用いること、並びに神経系の障害を治療に用いることができる。
Patent JP-2004500176-A (JP)
Title: 多相心臓画像処理装置
IPC: A61B8/02
Filed: 2000-11-27
Abstract: 心臓ゲートに関する画像処理装置で使用するための方法は、患者の心臓サイクルを監視するステップ、および前記患者に関する心臓サイクル時間を判定するステップより成る。関心のある所望の心臓位相が選択され、前記心臓サイクルにおける参照点からの遅延が判定される。前記遅延は、選択された心臓位相および前記心臓サイクル時間の少なくとも１つに対して非線形な関係を有する関数である。そして、前記遅延を利用して、前記心臓サイクルにおける前記選択された位相が探索される。この心臓ゲート方法は、前記患者の心臓サイクルにおける心臓位相の一様でない分布に対応した前記患者の心臓サイクルにおける一様でない変化を補償する。
Patent JP-2003517971-A (JP)
Title: 表示装置
IPC: G02B5/10
Filed: 2000-12-21
Abstract: (57)【要約】
ここで提案されているのは、自動車用の表示装置であり、これは仮想の画像を自動車のフロントガラスに表示するために使用される。画像表示は画像形成ユニットを介して行われ、これはフロントガラスの上側の領域または自動車ルーフの領域に配置されている。形成された画像は第１非球面鏡と、第２非球面鏡とを介してフロントガラスに導かれる。
Patent JP-2003524801-A (JP)
Title: 一体化平面光導波路およびシャッタ
IPC: G02B6/35
Filed: 2000-11-22
Abstract: (57)【要約】
入力導波路と２つの出力導波路とがトレンチにより分離され、トレンチの周囲に配置された光学スイッチを開示している。入力導波路と第１出力導波路は、それぞれのコアによりそれぞれの光路が画定されており、これら光路（およびコア）は互いに同軸である。これらの導波路はまた、導波路の屈折率とは異なる屈折率を有している媒体が内部に設けられたトレンチによっても分離されている。入力導波路と第１出力導波路はトレンチにより画定された距離だけ分離されており、その距離は、光信号が入力導波路から第１出力導波路まで伝播する際に異なる屈折率に出会うとしても、入力導波路から第１出力導波路まで伝播する光信号の伝達特性に影響を及ぼすのには不十分である。入力導波路と第２出力導波路は一般にトレンチの同じ側に配置されて、入力導波路から第２出力導波路まで通過する光信号が完全にはトレンチを横断しないようにしている。従って、入力導波路から第１出力導波路または第２出力導波路のいずれか一方まで通過する光信号が異なる屈折率に遭遇したとしても、光信号が両導波路間を移動しなければならない距離は、信号の光学伝達特性に影響しないようにするのに十分な程度まで小さくしてある。
Patent JP-2004500795-A (JP)
Title: 低速回生ブレーキを備えた電気ゴルフカー
IPC: B60L7/24
Filed: 2000-12-28
Abstract: アーマチャコイル（２２）および界磁コイル（２４）を備えた分巻モータを有する電動車両（ゴルフカー）用制御システム（１０）。本発明の制御システム（１０）は、アーマチャコイルを横切って並列に接続された１つのＭＯＳＦＥＴ（３４）と、アーマチャコイルに直列に接続された他のＭＯＳＦＥＴ（３６）とを有している。モータがその基本速度以下の速度で作動するときには、直列ＭＯＳＦＥＴを瞬間的にオンにしてアーマチャコイルを短絡することにより電流が誘起される。これにより、電流が反時計回り方向に流れ始め、この時点で直列ＭＯＳＦＥＴがオフに切り換えられる。この結果、モータに大きい電圧スパイクが生じ、電流がバッテリパックに戻される。直列ＭＯＳＦＥＴのオン／オフを迅速に切り換えることにより、電流が維持され、低速での回生制動が行なわれる。 【選択図】図１
Patent JP-2003520052-A (JP)
Title: カスパーゼ８発現のアンチセンスモジュレーション
IPC: A61K31/7088
Filed: 2001-01-11
Abstract: (57)【要約】
カスパーゼ8の発現をモジュレートするためのアンチセンス化合物、組成物および方法を提供する。組成物は、カスパーゼ8をコードする核酸を標的とするアンチセンス化合物、特にアンチセンスオリゴヌクレオチドを含む。カスパーゼ8発現のモジュレーションおよびカスパーゼ8の発現と関連した疾病の治療のためにこれらの化合物を使用する方法を提供する。
Patent JP-2003521650-A (JP)
Title: 電磁支持システム
IPC: F16F15/03
Filed: 2001-01-17
Abstract: (57)【要約】
防振ゴムのような対応する構造（１２）は、振動する対象の共振パターンを単純化するために使用される。本発明の一つの態様によれば、支持システム（１０）には、振動する対象に電磁力を適用するためのデバイス（３０）が提供され、対応する構造は、電磁デバイスを支持するために使用される。電磁デバイスは、（Ａ）振動する対象の位置、及び（Ｂ）電磁石の位置、の関数として明確に制御される。
Patent JP-2003528310-A (JP)
Title: 気体殺菌過程中に凝縮量を測定する器具
IPC: G01N21/55
Filed: 2001-03-20
Abstract: (57)【要約】
本開示は窓（１０）の一面上の凝縮をその他面から測定する凝縮モニターに関し、窓はチャンバの内部に対する部分開口を有するチャンバ壁に取り付けられた容器（２３）に配置される。モニターは傾斜光ビームを窓の中へ送りかつ傾斜光ビームを窓から送るために離間された位置にある窓の他面に配置された一対の光学プリズム（１４，２０）を備える。前記装置の一方に隣接する光源（１２，１３）は前記装置により窓の中に送られるべき平行光ビームを提供して面から面へと反射することにより光ビームが出てくる他方の装置まで窓に沿って送り、光センサー（２２）は窓から出てくる光量を測定する。両光学装置間にある部分に沿って送られた光量が前記窓の一面上の凝縮量に依存し、凝縮が屈折による前記一面からの光のロスを促進して窓に沿って光センサーまで透過される光量を減少する。
Patent JP-2003528944-A (JP)
IPC: G01N33/573
Filed: 2001-03-23
Abstract: Disclosed is a compound of Formula (I), wherein: L is a linking agent; B is a binding agent; X is an atom or group suitable for attaching L to the glycerol chain; and R is a straight chain saturated or unsaturated alkyl group having from 8 to 30 carbon atoms, substituted with M' or M'' wherein at least one of M' and/or M'' is a detectable label. The compound can be used as a lipase substrate in a solid phase-based assay system, such as a scintillation proximity assay, to detect lipase enzyme activity.
Patent JP-2004501484-A (JP)
IPC: H01M8/10
Filed: 2001-04-18
Abstract: A membrane electrode assembly (MEA) is provided which comprises an annealed polymer electrolyte membrane (PEM). Additionally, the MEA may include annealed catalyst layers annealed in contact with the annealed PEM. Additionally, methods of manufacture are provided. MEA's according to the present invention may be used in an electrochemical cell, such as a hydrogen fuel cell.
Patent JP-2003202011-A (JP)
Title: Double turning preventive device of fastener
Inventor: MIYAZAKI MASANARI
IPC: F16B37/04
Filed: 2002-01-08
Abstract: <P>PROBLEM TO BE SOLVED: To provide a double turning preventive device of a fastener which fastens the fastener by certainly adhering a seat surface of the fastener to it regardless of deterioration of the fastener, a working site, etc., and other working conditions, and certainly prevents double turning of the fastener even at the time of loosening the fastener.  <P>SOLUTION: Double turning of the fastener is prevented because a projected part 22 interferes with a vertical wall part 12A at the time of double turning of a bolt 10 when a nut 20 is rotated by a spanner by forming the projected part 22 on one of the bolt 10 and the nut 20.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003200628-A (JP)
Title: Bobbin for supply and its recycling use method
Inventor: TAKEDA KENICHI
IPC: B41J17/02
Filed: 2002-01-10
Abstract: <P>PROBLEM TO BE SOLVED: To provide a bobbin for supply and its recycling use method which facilitate working by a small core winder when thermal transfer sheets or image receiving sheets of different sizes (widths) are taken up to the bobbin for supply, enable using thermal transfer sheets or image receiving sheets of different sizes (widths) at various thermal transfer printers, and moreover prevent any trouble in recycling to use the bobbin for supply without discarding the bobbin.  <P>SOLUTION: The bobbin for supply 1 is constituted of a take-up shaft 4 and a flange 2 detachable from both ends 61 and 62 of the take-up shaft 4. In handling to take up the thermal transfer sheet or image receiving sheet 10 into a small wind, the thermal transfer sheet or image receiving sheet 10 is taken up to the common take-up shaft 4 even when the thermal transfer sheet or image receiving sheet 10 has a different width, and the flange 2 fitted to both ends 61 and 62 of the take-up shaft 4 is shaped to conform to various kinds of thermal transfer printers. The take-up shaft 4 can be used in common.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003207195-A (JP)
Title: Air conditioner
Inventor: NISHIDA KEIJI
IPC: F24F11/02
Filed: 2002-01-11
Abstract: <P>PROBLEM TO BE SOLVED: To provide a remote controller for air conditioning which simply and clearly displays damper set opening in a damper device.  <P>SOLUTION: In this air conditioner wherein the damper device installed in an interior unit can adjust the flow rate balance of air conditioned by the interior unit which is supplied to each of a plurality of air-conditioning zones, the damper device is also controlled by remote controllers 29, 30 for air- conditioning controlling the interior unit, and the damper set opening on the side of each air-conditioning zone (A zone, B zone) in the damper device is visually displayed by level meters 36, 37 in a display part 35 of this remote controller for air-conditioning.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2002303942-A (JP)
Title: Document lighting device
Inventor: KOBAYASHI TAKESHI
IPC: G03B27/54
Filed: 2002-01-15
Abstract: PROBLEM TO BE SOLVED: To provide a document lighting device which can eliminate noise and increase the reliability of safety standards without being made large-sized by mounting a lamp power source on the carriage of a scanner for a document reader equipped with the scanner which has at least a lamp and a full-rate mirror mounted on its carriage and making a scan while moving over the entire area of a document size. SOLUTION: As for the document lighting device for the document reader equipped with the scanner which has one lamp, the full-rate mirror, a reflector, and a lamp power source mounted on its carriage and makes a scan while moving over the entire area of the document size, the carriage is mounted with the lamp power source on the opposite side from an optical path reflected by the full-rate mirror and the reflection point of the full-rate mirror is within the height of the lamp power source.
Patent JP-2003209473-A (JP)
Title: Decoding method for arithmetic code, decoding device for arithmetic code, and decoding program for arithmetic code
Inventor: INAZUMI MITSUHIRO
IPC: H04N19/44
Filed: 2002-01-15
Abstract: <P>PROBLEM TO BE SOLVED: To decode an arithmetic code at high speed.  <P>SOLUTION: On the assumption that there is the chain of superior symbols (MPS) just for a prescribed length from a certain decoding starting point, a portion corresponding to the chain of these MPS is defined as a speculative execution length L and the sizes of a code word C1 of the MPS corresponding to the leading position of that speculative execution length L and a value (C -integrated stochastic value) subtracting an integrated stochastic value applying the area of the code word of the relevant MPS positioned in the top of the speculative execution length L from an initial code word (a code word C in an area 121) are judged. When the condition of C1<(C - integrated stochastic value) is fulfilled, the MPS corresponding to the speculative execution length are simultaneously decoded and when the condition of C1<(C - integrated stochastic value) is not fulfilled, decoding is performed step by step.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003213852-A (JP)
Title: Snow melting roof structure
Inventor: YOSHIDA HIROFUMI
IPC: E04D3/35
Filed: 2002-01-16
Abstract: <P>PROBLEM TO BE SOLVED: To provide snow melting roof structure of high snow melting efficiency.  <P>SOLUTION: In the roof structure with metal tiles laid on a sheathing upper part through a large number of battens, a heat insulating panel is interposed between the battens on the sheathing, and a surface material with high heat conductivity is attached to the surface of the heat insulating panel. Further on the upper face, a firm plate-shaped heat storage member and the metal tile are attached in this order. The surface material is fittingly provided with a heating tube of alternate piping form in which heating medium liquid flows through.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003207165-A (JP)
Title: Air conditioner
Inventor: OKADA HIROKAZU
IPC: F24F13/20
Filed: 2002-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To improve the design of an operation display of an ultraviolet lamp itself and appearance of a body case using light emission of the ultraviolet lamp for sterilization.  <P>SOLUTION: A flat-plate state ultraviolet lamp which emits visible rays from one face and ultraviolet rays from the other face is arranged in the neighborhood of the body case of a machine so that the front face is the visible rays emitting face, a front cover is provided on its front and this front cover is made to light. The front cover is made of a semi-transparent or transparent material in which a photoluminescent pigment is mixed.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003205958-A (JP)
Title: Plug for portable liquid beverage vessel, and portable liquid beverage vessel using the plug
Inventor: UEDA HIDEKAZU
IPC: B65D47/08
Filed: 2002-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To completely clean both a plug member and a lid member, to prevent any ugly appearance of an upper side of the plug member, to attachably/ detachably provide a straw so as to be completely cleaned, and to improve the sealability of the straw.  <P>SOLUTION: In a plug 10 of a portable liquid beverage vessel having the plug member 12 attachably/detachably fitted to a mouth part 3 of a vessel body 1 and the lid member 13 which is turnably and pivotably supported by the plug member 12, the plug member 12 and the lid member 13 are attachably/ detachably provided by an attaching/detaching mechanism 14. An operator 43 which is constantly urged outwardly is provided on the outer circumferential position away from a hinge piece 40 of the lid member 13, and an engagement receiving unit 45 to be engaged with a locking unit 33 erected on an upper surface of a plug top lid part of the plug member 12 when the lid member 13 is closed is provided on the operator 43. A straw holding member 46 to close a flow passage 29c of the straw 29a when the lid is closed is formed on a back side of the lid member 13.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003216996-A (JP)
Title: Medal paying-out device
Inventor: EBIWAKI TAKASHI
IPC: G07D1/00
Filed: 2002-01-18
Abstract: <P>PROBLEM TO BE SOLVED: To make manufacturable a part easily abraded by a transferred medal being transported likely to require replacement, at a low cost.  <P>SOLUTION: A publicly known paying-out device is described in Patent No.3135522 in Patent Gazette. The device described in the Gazette comprises a storage hopper provided on a base, a medal delivery device attached to a lower side of the storage hopper to take out the medal from the storage hopper, and a transfer guide rail connected to the medal delivery device in one end side to transfer the medal take out by the medal delivery device to a washing vessel provided on the base, and to transfer the washed medal to a medal taking-out member not shown in the Fig.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003216785-A (JP)
Title: Member selection support system
Inventor: SHIKAYAMA TOSHIHIRO
IPC: G06Q10/00
Filed: 2002-01-21
Abstract: <P>PROBLEM TO BE SOLVED: To provide a member selection support system for selecting appropriate members to newly constitute a group by using characters that electronic communication system users have regardless of a community or the contents of a job, that are the adaptations to respective roles of the users.  <P>SOLUTION: The member selection support system is provided with a history information preservation part 10 for preserving the history information of the exchange of messages of the users in an electronic communication system, a role adaptation calculation part 11 for calculating the adaptations of the respective users to the roles on group activity featured from the history information, and a group member selection part 14 for selecting the appropriate members to newly constitute the group from a prescribed user set.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003214066-A (JP)
Title: Screen device
Inventor: TANAKA TAKASHI
IPC: E06B9/58
Filed: 2002-01-21
Abstract: <P>PROBLEM TO BE SOLVED: To improve airtightness between a sheet body and a guide rail inside surface in a guide rail.  <P>SOLUTION: The sheet body 3 is respectively fixed to respective width directional end parts 3a, and has a pair of sealing functional stopper bodies 9 composed of an elastic material existing by continuously extending in the vertical direction in a wide housing space 5 of the guide rail 1 when the sheet body 3 descends and is put in a state of closing mutual both guide rails 1 and 1. The sealing functional stopper bodies 9 have a slipping-out preventive part 10 capable of preventing slipping-out from a narrow inserting port 4 of the width directional end parts 3a, and larger than an opening width of the narrow inserting port 4, and seal parts 11 and 12 integrally projected from the slipping- out preventive part 10, and capable of sealing a space with an inner wall surface by abutment to the inner wall surface of the wide housing space 5.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003215088-A (JP)
Title: Sensitive substance nature generation type negative ion selective electrode containing potential stabilizer, and response film for electrode
Inventor: AKIYAMA HIDETOKI
IPC: C08G59/40
Filed: 2002-01-22
Abstract: <P>PROBLEM TO BE SOLVED: To solve the problem that the conventional negative ion selective electrode where a linear property, response property, an ion selectivity, and the like are regarded as important is not excellent in mechanical strength, that where resin and the like are used as a support to secure the mechanical strength has troubles regarding sensitivity and the ion selectivity, and a sensitive substance that is thought to be excellent in a system may be very poor in another chemical environment frequently since the linear property, response property, and ion selectivity to each ion of the sensitive substance are greatly affected by chemical environment surrounding them.  <P>SOLUTION: The response film for a sensitive substance nature generation type negative ion selective electrode is manufactured. The response film for the sensitive substance nature generation type negative ion selective electrode uses a curing epoxy resin or the similar as a support, and uses a quaternary ammonium cation that is inevitably generated in an anion selective substance in epoxy resin curing reaction and also maintains the form after the reaction.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003214992-A (JP)
Title: Simple member damage degree measuring device, and measuring method for simple member damage degree measuring device
Inventor: KUMAGAI HITOSHI
IPC: G01M99/00
Filed: 2002-01-22
Abstract: <P>PROBLEM TO BE SOLVED: To provide a simple member damage degree measuring device capable of easily quantitatively judging the member damage degree of a concrete structure at a low cost and a measuring method for the simple member damage degree measuring device.  <P>SOLUTION: This simple member damage degree measuring device 1 comprises fixed fixtures 2 and a rupture strain judgment member 3 for mutually connecting the fixtures 2. The rupture strain judgment member 3 comprises a wire the ruptured state of which is visually judgeable and stiffening members 5 provided on the connecting part with the fixtures 2 at both end parts of the wire 4. A plurality of rupture strain judgment members 3 having wires 4 differed stepwise in member length are provided in the measuring device 1, so that the damage level of the concrete structure can be visually ranked. The rupture strain judgment member 3 has two functions of a tensile strain judgment member 3a for detecting the tensile strain of the structure by changing the shape of the stiffening member 5 and a compression strain judgment member 3b for detecting a compression strain.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003062769-A (JP)
Title: Cutting edge mounting device to collet chuck
Inventor: TAKAMATSU SHINKICHI
IPC: B23B31/02
Filed: 2002-01-24
Abstract: PROBLEM TO BE SOLVED: To provide a cutting edge mounting device to a collet chuck which allows the reduction of labor of a NC miller operator and the safe and easy replacement of a cutter. SOLUTION: A cutting edge mounting device to a collet chuck in which a cutting edge is fastened to a collet of a collet chuck for mounting a cutting edge on a main shaft of a NC miller contains a support and fixing means 4 and 28 of the collet chuck 3 in which the cutting edge 1 is inserted in the collet 2, a rotating means of a power ring 5 having a claw member 7 fitted with a groove 6 provided to the outer peripheral surface of the power ring 5 tightening the collet 2 and a deceleration motor 10 connected to the rotating means of the power ring 5.
Patent JP-2002325587-A (JP)
Title: Nitrile hydratase and method for producing amide
Inventor: NAGASAWA TORU
IPC: C12N1/21
Filed: 2002-01-24
Abstract: PROBLEM TO BE SOLVED: To provide a nitrile hydratase capable of producing 2-hydroxy-4- methylthiobutyramide. SOLUTION: This new nitrile hydratase is capable of producing an α- hydroxyamide using an α-hydroxynitrile as a substrate. The DNA is capable of encoding the nitrile hydratase. The enzyme can be obtained from a Rhodococcus sp. The enzyme stably maintains the enzyme activity during a reaction. The method for producing an amide compound comprises a step of making the enzyme act on a nitrile compound. Thereby, the corresponding amide compound can biochemically be produced from the hydroxynitrile compound without lowering the activity of the enzyme nitrile hydratase.
Patent JP-2003210390-A (JP)
Title: Endoscopic apparatus
Inventor: HASHIZUME TAKUMI
IPC: A61B1/00
Filed: 2002-01-25
Abstract: <P>PROBLEM TO BE SOLVED: To provide an endoscopic apparatus which can surely photograph an observation region, provides good operability and reduces the burden to be incurred upon a patient.  <P>SOLUTION: The endoscopic apparatus 1 has a photographing section 21 which is an optical system for observation for simultaneously imaging videos of a wide visual field at a distal end 11 of a small-diameter insertion portion 2. The photographing section 21 has a primary reflection mirror 22 and a secondary reflection mirror 24. The reflection mirror 22 has a rotationally symmetric primary reflective surface 23 with respect to the longitudinal direction of the insertion portion 2 and reflects the projected light L2 from a subject as a primary reflected light L3. The reflection mirror 24 has a rotationally symmetric secondary reflective surface 25 which faces the reflective surface 23 and condenses the light to a CCD being an imaging device of an imaging mechanism 31 having the same central axis as that of the reflective surface 23.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003212574-A (JP)
Title: Bending fixture for glass sheet and its device
Inventor: ANDO HIROSHI
IPC: C03B23/03
Filed: 2002-01-28
Abstract: <P>PROBLEM TO BE SOLVED: To provide a bending fixture for a glass sheet and its device, which does not need manufacturing a number of bending dies and car correspond to a plurality of arbitrary shapes.  <P>SOLUTION: This bending fixture 10 for the glass sheet which is used for bending of a glass sheet is provided with a frame 20, a flexible plate member 12 for contacting the glass sheet by pressing and a plurality of connectors comprising rod members 14 which have one end part connected with the frame and another end part connected with the plate member and retains the distance between the frame and the plate member in a prescribed length and rod member supporting stands 16.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2002299056-A (JP)
Title: Light-emitting device and method of manufacture
Inventor: KIMURA HAJIME
IPC: G09F9/00
Filed: 2002-01-29
Abstract: PROBLEM TO BE SOLVED: To provide a technology for obtaining a light-emitting device for preventing reflection in a manufacturing method of the light-emitting device having a lustrous cathode. SOLUTION: In a picture element part of the light-emitting device, the surface of the cathode 151 contacting with an organic layer 150 is formed into ruggedness 165 by using a transparent projection 164, so that the incident light is reflected in all directions. An insulation film, having high absorptivity of the light, is formed in a drive circuit part of the light-emitting device. As a result, the reflection becomes invisible to observers.
Patent JP-2003224317-A (JP)
Title: Injection-locked or mopa gas laser
Inventor: YAMASHITA TOSHIO
IPC: H01S3/034
Filed: 2002-01-30
Abstract: <P>PROBLEM TO BE SOLVED: To provide an injection-locked or MOPA gas laser that is small in installation area and can be maintained easily.  <P>SOLUTION: The injection-locked or MOPA gas laser is provided with a seed laser (11) which oscillates seed laser light (21) by exciting laser gas in a laser chamber (12) and an amplifier (111) which amplifies the pulse energy of the seed laser light (21) by exciting the laser gas in an amplification chamber (112). The laser chamber (12) and the amplification chamber (112) which are respectively mounted on rails (37 and 37) installed nearly vertically to the optical axis of the seed laser light (21) are positioned on the same side with respect to the optical axis of the laser light (21) so that the chambers (12) and (112) may be advanced and retreated along the rails (37 and 37) by means of a rotatable roller (38).  <P>COPYRIGHT: (C)2003,JPO