baber/WOPTO huggingface dataset:
Patent JP-2004537123-A (JP)
IPC: G06F9/445
Filed: 2002-07-23
Abstract: A system and method are provided for updating persistent data in a wireless communications device. The method comprises: executing system software; launching a run-time engine; receiving the patch manager run-time instructions with dynamic instruction sets and new code sections, including updated persistent data, in a file system section in nonvolatile memory; processing dynamic instruction sets; in response to processing the dynamic instruction sets, selectively updating persistent data in the system software selected from the group including radio frequency (RF) calibration data, nonvolatile system and user configuration data, resource data, nonvolatile system and user application data, and arbitrary data; and, executing the system software with the updated persistent data.
Patent JP-2005514586-A (JP)
Title: 伝播時間に基づく測定装置の測定信号評価方法
IPC: G01F23/284
Filed: 2002-07-26
Abstract: 本発明は、特に、測定範囲の上端および下端における測定値を推定することができる方法に関する。この場合、通常、例えば、レーダーアンテナでの反射により干渉信号が重畳するため、直接測定が不可能である。強力な干渉信号が存在する場合、それは、例えば、容器または測定装置が設置されている頚部における固有共鳴により生じるが、干渉信号との重畳により高い振幅が生じておれば、通常、直接レベル表示信号が用いられ、レベルを検知することができる。直接レベル表示信号が二つの干渉信号の間にあり、これらを超えない場合は、レベル表示値は反射点からの信号をシフトすることにより補間することができる。本発明の方法は、既知の方法により、ユーザーがＥＯＬ信号のシフトによる測定値と直接レベル表示反射波による測定値の間で判定しながら、支配的な測定状況に自動的に適応する。
Patent JP-2005501747-A (JP)
IPC: B23C5/06
Filed: 2002-08-22
Abstract: A cutting insert having two end portions and an intermediate portion extending longitudinally between the two end portions. The intermediate portion has N side surfaces and N primary cutting edges. The N primary cutting edges are formed at the intersection of adjacent side surfaces. Each one of the N primary cutting edges extends from one end portion to the other end portion. At least N secondary cutting edges formed on at least one of the two end portions. A cutting corner is formed between a primary cutting edge and a secondary cutting edge. Each secondary cutting edge extending away from the cutting corner in a direction generally away from the intermediate portion.
Patent JP-2005507386-A (JP)
Title: 抗菌剤としてのオキサゾリジノン及び／又はイソオキサゾリン
IPC: A61P43/00
Filed: 2002-09-09
Abstract: 式（Ｉ）の化合物、又はその製剤的に許容される塩又は in vivo 加水分解可能エステル、及び式（Ｉ）［式中、Ｃは、例えば（Ｄ）、（Ｅ）、（Ｆ）であり：ここでＡ及びＢは、（ｉ）及び（ｉｉ）より独立して選択され；Ｒ ２ ａ〜Ｒ ３ ｂは、水素及びフッ素より独立して選択され；Ｒ １ ａ及びＲ １ ｂは、例えば、ヒドロキシ、−ＮＨＣ（＝Ｗ）Ｒ ４ 、（ａ）、及び（ｂ）より独立して選択され；ここでＷは、Ｏ又はＳであり；Ｒ ４ は、例えば、水素、アミノ、（１−４Ｃ）アルキルであり；ＨＥＴ−１は、例えば、Ｃ連結５員ヘテロアリール環であり；ＨＥＴ−２は、例えば、Ｎ連結５員の全部又は一部不飽和の複素環式環である］に示すような化合物は、抗菌剤として有用であり；その製造の方法とそれらを含有する医薬組成物を記載する。
Patent JP-2005512363-A (JP)
IPC: H04W4/02
Filed: 2001-11-19
Abstract: In a telecommunication system communication to and/or from a user equipment is carried on a user plane and messages supporting the communication are carried on a control plane. Information supporting provision of information about the location of the user equipment is also arranged to be carried on the user plane to and/or from the user equipment.
Patent JP-2005510852-A (JP)
Title: 放電ランプの動作装置及び動作方法
IPC: H05B41/392
Filed: 2002-11-06
Abstract: 【課題】種々の条件に適応する多能な放電ランプの動作装置を提供する。 【解決手段】本発明は、放電ランプ用の動作装置に関するものであり、この装置は、電圧源からの電力を放電ランプに供給する電源回路と、実際のランプ電流、実際のランプ電圧、及び実際のランプ電圧のうちの少なくとも１つを測定する手段と、前記ランプ電流、前記ランプ電圧、及び前記ランプ電力のそれぞれを表現するアナログ・ランプ制御信号のうちの少なくとも１つを供給する手段と、前記少なくとも１つのランプ制御信号をフィルタ処理するフィルタ手段と、前記電源回路が供給する電力を制御する制御手段とを具えて、前記少なくとも１つのランプ制御信号をフィルタ処理したものを前記制御手段に供給して、前記制御手段が、前記少なくとも１つのランプ制御信号に応じて電力を制御して、前記フィルタ手段が、前記少なくとも１つのアナログ・ランプ制御信号を、これに対応するディジタル・ランプ制御信号に変換する変換手段を具えて、前記フィルタ手段がディジタルフィルタを具えて、該ディジタルフィルタが、前記ディジタル・ランプ制御信号をフィルタ処理して、フィルタ処理したディジタル・ランプ制御信号にする。
Patent JP-2005511451-A (JP)
IPC: B66B13/30
Filed: 2002-07-15
Abstract: The present invention is about a traction sheave elevator, without the machine room, comprising an elevator car that runs on guide rails placed in the shaft and connected to at least one hoisting rope un-coiling on a diverting pulley driven by a traction sheave. The invention's characteristic consists in comprising a space, outside the elevator shaft, which houses, at least partially, the traction sheave and is equipped with an opening near a floor's door for the access to the drive machine and to the traction sheave, from outside the shaft. The invention also provides for arranging the two diverting pulleys on the counterweight and on the elevator car in a way that one or the other can be tilted with respect to the vertical or arranging them on the same axis and on the same body of the pulley with the grooves of the alternating hoisting ropes.
Patent JP-2005512143-A (JP)
Title: 多密度音響減衰積層体およびその製造方法
IPC: G10K11/168
Filed: 2002-10-15
Abstract: 【課題】  優れた音響減衰特性を示すと同時に、軽量かつ安価な遮音材料を提供する。 【解決手段】  音響減衰積層体とその製造方法であって、不織物繊維性材料層１２の表面に熱を付加し、繊維性材料層１２の残りの部分の密度よりも大きい密度を有する融解繊維層部１４を形成する。大きい密度を有する融解繊維層部１４は繊維性材料層１０内を伝播する騒音を減衰させるのに有効に作用する。カーペットのような室内装飾材料１６を加熱した繊維性材料層１０の表面に付着させる。次いで、繊維性材料層１０と室内装飾材料１６に圧縮成形圧を付加し、所定の形状を得る。圧縮成形圧を付加して繊維性材料層１０の各部の密度を選択的に変化させることによって、繊維性材料層１０の減衰特性をさらに調整することができる。
Patent JP-2005516938-A (JP)
IPC: A61K31/404
Filed: 2002-12-13
Abstract: A compound called NATURA, which is a derivative of Isoindigo is useful in aiding the general health of a patient and specifically is beneficial in preventing or treating cancer. This compound and other related Isoindigo, Indigo and Indirubin derivatives are designed such that the bioactivity or bioavailability of the compound is increased. Methods of synthesizing these derivatives is also taught. In addition, pharmaceutical compositions that include a therapeutically effective amount of at least one of these derivatives and a pharmaceutically acceptable carrier. A method for the use of these pharmaceutical compositions and compounds is taught, wherein a therapeutically effective amount is administered to an animal having solid tumor cancer. The pharmaceutical composition or compound can be re-administered to the animal until a desired treatment or result is accomplished.
Patent JP-2005517537-A (JP)
Title: 高度に組織化されたカーボン・ナノチューブ構造の指向性アセンブリ
IPC: C01B31/02
Filed: 2003-02-11
Abstract: カーボン・ナノチューブをテンプレート構造（12）に制御可能に整列させ、所望の特性を有する構造およびデバイスを含む様々なカーボン・ナノチューブを製造する方法が提供される。この方法は、垂直方向にも水平方向にも制御可能に整列したナノチューブ（14）を、単一の処理段階で同時にかつ選択的に、テンプレート構造（12）上に成長させるが、基板（10）上には成長させないことを可能にする。
Patent JP-2005518967-A (JP)
IPC: B42D15/10
Filed: 2003-02-26
Abstract: The security document card has a carrier (10) with a cladding (5) on at least one side. The carrier contains high density polyethylene (HDPE) and linear low density polyethylene (LLD-PE), and the coating is of polycarbonate. The carrier material is augmented by a bulking material using TiO2 and/or CaCO3, at a rate of at least 5 wt.% or at least 20 wt.%. The thickness of the carrier is at least 100 mum with a thinner cladding, or the carrier is at least 120 mum thick with a cladding thickness of at least 100 mum. The cladding is bonded to the carrier by a fusible adhesive activated at a temperature at least100degreesC and at most200degreesC. The security data are written on to the card by a laser before and/or after the cladding is bonded to the carrier.
Patent JP-2005521720-A (JP)
Title: 心血管、肝臓および腎臓疾患の予防および治療用、並びに化粧品適用の天然化合物およびそれらの誘導体
IPC: A23L1/30
Filed: 2003-04-03
Abstract: 本発明は、下記式（Ｉ）で表わされるフェノール系化合物およびそれらの誘導体に関する： 【化１】     （上記式中、Ｒ １ およびＲ ２ は、ＯＨ、ＯＣＯアルキルまたはＯＣＯアルケニルから選択されるものであり、かつＲ ３ は、Ｈ、ＯＨ、ＯＣＯアルキルまたはＯＣＯアルケニルであり、ここで、アルキルまたはアルケニル鎖は２〜２２の炭素原子を有し、またＯＣＯアルキルまたはＯＣＯアルケニル基が少くとも１つ構造中に存在する。）。より詳しくは、本発明は、心血管、肝臓または腎臓疾患の予防または治療のための上記化合物の使用、並びにそれらの化粧品への適用に関する。本発明はまた、上記化合物を含んでなる組成物、および新規フェノール系化合物およびその誘導体に関する。
Patent JP-2006508633-A (JP)
Title: アラニンデヒドロゲナーゼ、セリンデヒドラターゼおよび／またはグルタミンシンテターゼを発現する結核ワクチンとしてのリコンビナントｂｃｇ株
IPC: C12N9/06
Filed: 2003-04-16
Abstract: 本発明は、発現可能な核酸を含む生リコンビナントＭｙｃｏｂａｃｔｅｒｉｕｍ  ｂｏｖｉｓＢＣＧ株に関する。前記核酸は、アラニンデヒドロゲナーゼ活性、グルタミンシンテターゼ活性またはセリンデヒドラターゼ活性を示す少なくとも１つのタンパク質またはポリペプチドをコードする。
Patent JP-2005196843-A (JP)
Title: Redundancy relief apparatus of memory
Inventor: YAMAGUCHI SATORU
IPC: G11C29/04
Filed: 2004-01-05
Abstract: <P>PROBLEM TO BE SOLVED: To provide a memory redundancy relief apparatus which makes capacity of a redundant memory smaller than a conventional case while relieving defective cells by conducting the relief of the defective cells of the memory in terms of a word unit.  <P>SOLUTION: The redundancy relief apparatus is provided with a first memory, a redundant second memory and a table which describes the correspondence relationship between first addresses corresponding to the defective cells of the first memory and second addresses corresponding to the replacement cells of the second memory with which the defective cells are replaced. When inputted addresses are the first addresses, the second addresses corresponding to the first addresses are selected and supplied to the second memory. When the inputted addresses are not the first addresses, the inputted addresses are selected and supplied to the first memory.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2005196467-A (JP)
Title: Storage system, control method for storage system, and storage controller
Inventor: YAMASHITA SHINICHIRO
IPC: G06F3/06
Filed: 2004-01-07
Abstract: <P>PROBLEM TO BE SOLVED: To enable a computer system in a remote site to identify a storage device in a main site as failing when a failure in the storage device in the main site interrupts heartbeat message transmission from the main site.  <P>SOLUTION: A first storage device comprises a replication data transmission part for, when data are written into a first storage volume, transmitting a replication thereof to a second storage device, and the second storage device comprises a replication data reception part for writing the data replication transmitted by the replication data transmission part into a second storage volume. The first storage device comprises a disk heartbeat writing part for writing first heartbeat messages into the first storage volume repeatedly at intervals within a predetermined time, and the second storage device comprises a disk heartbeat detection part for detecting replications of the first heartbeat messages written into the second storage volume by the replication data reception part.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2004216149-A (JP)
Title: Adhesive roller
Inventor: MCKAY NICHOLAS D JR
IPC: A47L13/20
Filed: 2004-01-09
Abstract: <P>PROBLEM TO BE SOLVED: To provide an adhesive roller which can prevent a strip coated by an adhesive from unwinding, and an adhesive cleaner using the adhesive roller.  <P>SOLUTION: This adhesive roller (12) has an adhesive roller (10) which has a tubular and cylindrical shape core (24) not shorter than 15.24 cm made of paperboard and a plurality of slender strips (26). Each strip (26) has a lining (28) and adhesive coating (30) applied on one side of the lining. Each strip (26) has a parallelogram shape and a surface area substantially equal to or slightly larger than the outer periphery surface area of the core. The strips (26) are successively wound around the core in a spiral pattern in a state in which adhesive layers (48) are directed outward, to form a continuous layer around the core by the strips. The continuous layer covers the outer periphery of the core or the preceeding layer.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2005198751-A (JP)
Title: Zigzag sewing machine
Inventor: FUJITA MOTOTSUGU
IPC: D05B35/06
Filed: 2004-01-14
Abstract: <P>PROBLEM TO BE SOLVED: To omit a dedicated motor from a zigzag swing mechanism and to improve the certainty of a zigzag swing operation with a small-sized, simple and inexpensive constitution.  <P>SOLUTION: A bobbin 24 for supplying an electric heating cord C and a nozzle 27 are held by a holding cylinder 22, and the holding cylinder 22 is turned around a needle bar 6 by a turning mechanism 31. A cam member 40 is connected to a sewing machine main shaft 5, and the rotation of the cam member 40 is converted to the swing motion of the nozzle 27 in the zigzag swing mechanism 43. The first lever 45 of the zigzag swing mechanism 43 drives an elevating/lowering body 44 according to the shape of a cam groove 41. A ring 46 is rotatably provided on the elevating/lowering body 44, and the ring 46 and a second lever 47 are connected by a link 48. The nozzle 27 is attached to the second lever 47 through an arm 49, and the second lever 47 is provided with an input part 47a capable of varying the distance from a fulcrum shaft 56.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2005199522-A (JP)
Title: Twin-screw extrusion molding machine
Inventor: IMURA TAMEYUKI
IPC: B29C48/05
Filed: 2004-01-14
Abstract: <P>PROBLEM TO BE SOLVED: To provide a twin-screw extrusion molding machine constituted so that a material to be treated is kneaded, compressed and transferred in a transfer space by the biting rotation of a pair of screw shafts when charged in a casing from a charging part, discharged from a plurality of the discharge ports of a die plate and heated while reduced in volume by the kneading, compression and transfer in the transfer space and the friction resistance due to the die plate, the resin component or the like in the material to be treated is melted to become a binder and the material to be treated is solidified and molded to be discharged from a discharge nozzle.  <P>SOLUTION: The twin-screw extrusion molding machine is constituted by providing the casing 1 having the charging part 3 of the material W to be treated provided to one side part thereof and the discharge parts 4 provided to the other side part thereof, a pair of screw shafts 5 rotatably parallelly provided in the casing in a state that the blade parts 5a thereof are overlapped with each other and a plurality of the discharge ports 12 in a shape-correcting region H excepting the biting region K where the respective blade parts are overlapped with each other are removed from two annular regions R opposed to the respective blade parts of a pair of the screw shafts.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2005208236-A (JP)
Title: Single focal lens
Inventor: OBIKANE YASUHIKO
IPC: G02B13/18
Filed: 2004-01-21
Abstract: <P>PROBLEM TO BE SOLVED: To well correct aberrations with a lens constitution of a fewer number of lens elements and to obtain excellent optical performance in spite of a small size and low cost.  <P>SOLUTION: The single focus lens is arrayed, successively from an object side, with a first lens L 1 which is composed of glass, at least whose one surface is constituted of an aspherical surface and which has positive refractive power, a second lens L 2 which is composed of plastic, at least whose one surface is constituted of an aspherical surface and which has negative refractive power, a third lens L 3 which is composed of plastic, at least whose one surface is constituted of an aspherical surface and which has positive refractive power, and a fourth lens L 4 which is composed of plastic, at least whose one surface is constituted of an aspherical surface. The single focus lens satisfies conditions (1) 1.58<Nd<SB>1</SB><1.75, (2) 49<ν<SB>1</SB><62, (3) ν<SB>2</SB><ν<SB>3</SB>(where Nd<SB>1</SB>is the refractive index of the first lens, ν<SB>1</SB>is the Abbe number of the first lens, ν<SB>2</SB>is the Abbe number of the second lens, and ν<SB>3</SB>is the Abbe number of the third lens).  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2005140488-A (JP)
Title: Microwave oven used also as hood
Inventor: YIM KI YONG
IPC: H05B6/80
Filed: 2004-01-22
Abstract: <P>PROBLEM TO BE SOLVED: To provide a microwave oven used also as a hood, shutting off a phenomenon that polluted air such as hot air, a bad smell, and steam or the like generated in time of cooking by a microwave oven flows into a room by installing an air curtain generation unit to the microwave oven, so as to keep indoor environment more comfortable.  <P>SOLUTION: This microwave oven used also as the hood includes: a cabinet 18 installed on the upper side of the microwave oven 12; a cooking chamber 24 having a prescribed cavity, installed inside the cabinet 18, for cooking food by an electromagnetic wave supplied from a magnetron 20; a hood unit installed inside the cabinet 18, discharging the polluted air generated in time of the cooking by the microwave oven 12 to the outside; and the air curtain generation unit installed on the lower face of the cabinet 18, shutting off the phenomenon that the polluted air generated in time of the cooking by the microwave oven 12 flows into the room.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2005215392-A (JP)
Title: Electronic display device
Inventor: TANAKA SHINYA
IPC: G09F9/33
Filed: 2004-01-30
Abstract: <P>PROBLEM TO BE SOLVED: To provide an electronic display device which provides the observer with an image having a small thickness, by which information display is seen from the front surface and the rear surface, and decoration display is seen at the periphery.  <P>SOLUTION: The electronic display device is constituted so that it is provided with an information display part 9, consisting of a plurality of first light-emitting elements 3 arranged into a matrix form, and moreover toward the forward direction and which displays image information by the on or off of the plurality of first light-emitting elements 3, and a decoration display part 10, consisting of a plurality of second light-emitting elements 24 arranged around the information display part 9, and arranged toward the side and a first reflecting plate 1b and light emitted from the plurality of second light-emitting elements 24 advances to the side, is reflected on the first reflecting plate 10b and advances forwardly.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2005217917-A (JP)
Title: Portable radio communication device and antenna
Inventor: AMANO TAKASHI
IPC: H01Q1/24
Filed: 2004-01-30
Abstract: <P>PROBLEM TO BE SOLVED: To provide a cabinet built-in antenna which can form radiation directivity and be used so that a direction of the user may be avoided when upper and lower cabinets of a folded type portable radio communication device with a receiving function of digital television broadcasting, are opened.  <P>SOLUTION: The antenna is provided with an upper side antenna element 2 which is built-in in the upper cabinet 1 of the portable radio communication device, a lower side antenna element 4 which is built in the lower cabinet 3, a connecting wire 5 which connects a terminal 2a of the upper side antenna element 2 and a terminal 4b of the lower side antenna element 4, and a connecting wire 6 which connects another terminal 2b of the upper side antenna elements 2 and another terminal 4a of the lower side antenna elements 4. The antenna is composed to make a twisted loop of a character "8" shape by nearly symmetrical of upper and lower parts as a total by crossing the connecting wire 5 and the connecting wire 6 in a hinge part 7.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2005211510-A (JP)
Title: Image display device and game machine
Inventor: YOSHIDA YASUTAKA
IPC: A63F13/52
Filed: 2004-01-30
Abstract: <P>PROBLEM TO BE SOLVED: To provide an image display device and a game machine in which a processing load of a three-dimensional image processing means can be reduced when not displaying a three-dimensional moving image on a part of a screen.  <P>SOLUTION: A front panel 40 displays a moving image indicative of a virtual three-dimensional space in real time and there is a non-display area not to display any moving image thereon in a part of the display area. A data storage section 303d stores information relating to the non-display area on the front panel 40. An arrangement processing section 303a refers to the information relating to the non-display area from the data storage section 303d and arranges a plate-like object at a position where a distance from a viewpoint becomes the front of the three-dimensional space, in the portion of the non-display area.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2005219248-A (JP)
Title: Unit for letter of thank
Inventor: TANI SAIJO
IPC: B42D15/02
Filed: 2004-02-03
Abstract: <P>PROBLEM TO BE SOLVED: To provide a unit for a letter of thanks expressing a feeling of an acknowledgement to parents at the time of marriage.  <P>SOLUTION: A letter 2 of thanks displaying sentences and words of thanks on a semi-transparent paper is stored in a rectangular frame body 1, and on the back side of this letter 2 of thanks, hearts of thanks of a bridegroom and a bride at the time of the marriage is expressed by backing it up with a dyed Japanese paper 3. The frame body 1 is equipped with a voice generating device 5 for generating the sentences and the words of thanks by voices.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2004215289-A (JP)
Title: Display control apparatus and method
Inventor: TERASAWA HIDEO
IPC: G06F3/0481
Filed: 2004-02-09
Abstract: <P>PROBLEM TO BE SOLVED: To speedily and surely select a desired image out of a number of images.  <P>SOLUTION: In an electronic program guide for selecting a program, the electronic program guide (data stream) composed of a still picture resulting from the representative picture of a program is displayed while being superimposed on a picture of a program that is originally received and displayed. When a command for moving a cursor upward or downward is inputted while the cursor is positioned on a predetermined category, a still picture of the category is scrolled downward or upward. When no command is inputted for a preset fixed time or longer, still pictures of respective categories are automatically scrolled at the same time.  <P>COPYRIGHT: (C)2004,JPO&NCIPI
Patent JP-2005221048-A (JP)
Title: Dynamic damper
Inventor: KUNIJI KIYOTAKA
IPC: F16F15/126
Filed: 2004-02-09
Abstract: <P>PROBLEM TO BE SOLVED: To provide a dynamic damper capable of maintaining damper effect equal to a large-scale existing product having large mass even in the case of miniaturization and reduction of the weight, and capable of obtaining necessary bonding strength by sufficiently securing bonding area in a mass part in relation to a rubber elastic body, and possible to be formed without adhesion.  <P>SOLUTION: This dynamic damper 11 is provided with a fitting part 12 to be installed in a rotary shaft 10, the mass part 13 arranged in the periphery of the fitting part 12, a cover part 14 for covering the mass part 13, and a connecting part 15 for elastically supporting a part between the mass part 13 and the fitting part 12. The fitting part 12, the cover part 14 and the connecting part 15 are integrally formed with each other by the rubber elastic body. Mass of the mass part 13 is reduced, and rise of resonance frequency due to reduction of mass is corrected by reducing spring constant of the rubber elastic body, and reduction of kinetic energy due to reduction of mass is corrected by reducing a coefficient of attenuation of the rubber elastic body to increase vibration.  <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent JP-2005099669-A (JP)
Title: Projection display device
Inventor: NAKAMURA HIDETAKA
IPC: G02F1/13357
Filed: 2004-02-13
Abstract: <P>PROBLEM TO BE SOLVED: To project images of high quality free from irregular luminance and contrast reduction on a projection surface as a projection display device utilizing a reflective display element.  <P>SOLUTION: The projection display device comprises; a reflective display element 1; a light source system 2 for projecting illuminating light toward the reflective display element 1 from a direction inclined to one direction from a front surface direction of the reflective display element 1; a projection system 15 for projecting image beam emitted from the reflective display element 1 onto a projection surface; and a relay lens 14 which is arranged on the front surface side of the reflective display element 1 and corrects illuminating light which is made incident from a surface opposed to the light source system 2 and the projection system 15, into paralle beams being along a direction inclined at a prescribed angle from the front surface direction of the reflective display element 1 to make the parallel beams incident on the reflective display element 1 and makes image light emitted from the reflective display element 1, incident on the projection system 15 and emits light reflected by the surface opposed to the light source system and the projection system, out of illuminating light from the light source system 2 in directions other than the direction in which the image light is projected by the projection system 15.  <P>COPYRIGHT: (C)2005,JPO&NCIPI