baber/WOPTO huggingface dataset:
Patent WO-2019189742-A1 (WO)
Title: Composition for external application containing ascorbic acid and/or salt thereof
Inventor: KITAOKA YU
IPC: A61K8/34
Filed: 2019-03-29
Abstract: The present invention provides a composition for external application, which has excellent stability and feeling of use. According to the present invention, a composition for external application is prepared to contain (A) 10% by mass or less of at least one compound that is selected from the group consisting of ascorbic acid and salts of ascorbic acid, (B) 30% by mass or more of a diol having three carbon atoms, and (C) 20% by mass or less of water, while having an ethoxydiglycol content of less than 30% by mass and a pH of 4.5 or less. Alternatively, a composition for external application according to the present invention is prepared to contain (A) 10-25% by mass of at least one compound that is selected from the group consisting of ascorbic acid and salts of ascorbic acid, (B) a diol having three carbon atoms in an amount of 30-90% by mass in the components other than the components (A) and (C), and (C) water, while having an ethoxydiglycol content of less than 30% by mass and a pH of 2.0 to 6.0 and satisfying (C)/(A) = 0.2-5.
Patent WO-2019244539-A1 (WO)
Inventor: KURAHASHI TOYOHIDE
IPC: B65D85/48
Filed: 2019-05-20
Abstract: A laminate-pallet integrated article 1 is provided with: a laminate 3 in which a plurality of glass plates G and protective sheets I are alternately laminated together; and a pallet 2 capable of holding the laminate 3 in a vertical attitude. The pallet 2 has a back surface part forming a support surface 9a supporting a back surface side of the laminate 3. The support surface 9a has a first opposing region opposing the glass plates G, and a second opposing region opposing portions of the protective sheets I that protrude from the glass plates G. The second opposing region has a retreating part 11 retreating to the side lower than the first opposing region in a laminating direction X of the glass plates G.
Patent WO-2020003819-A1 (WO)
Title: Audio signal processing device, moving device, method, and program
Inventor: TANAKA TAKEHIKO
IPC: H04S7/00
Filed: 2019-05-22
Abstract: The present invention executes control of a sound field by controlling respective virtual sound source positions of ambient sound sources and a primary sound source, which are separated audio signals acquired from an input sound source, in accordance with the change of the speed or the traveling direction of an automobile. This audio signal processing device has: a speed information acquisition unit that acquires speed information of a moving device; a steering information acquisition unit that acquires steering information of the moving device; and an audio control unit that controls output sounds from speakers arranged at a plurality of different positions in the moving device. The audio control unit executes control of the sound field by controlling the virtual sound source positions of the ambient sound sources and the primary sound source, which are separated audio signals acquired from the input sound source in accordance with the speed information acquired by the speed information acquisition unit and the steering information acquired by the steering information acquisition unit.
Patent WO-2019230792-A1 (WO)
Title: Dough extending device
Inventor: ONOGUCHI KAZUYOSHI
IPC: A21C3/02
Filed: 2019-05-29
Abstract: Provided is a dough extending device which has a comparatively large surface area for pressing dough, and is highly efficient at extending the same. A dough extending device (1) has a lower conveyor (4) which transports dough (D) from an upstream side to a downstream side, and an upper conveyor (10) which is disposed above the lower conveyor (4). The dough extending device (1) has a conveyor belt (10f). The conveyor belt (10f) has an arc-shaped lower surface (10fa), and the center of curvature thereof is positioned higher than the conveyor belt (10f). The upper conveyor (10) vibrates such that a location on the dough (D) pressed by the arc-shaped lower surface (10fa) moves from the upstream side to the downstream side.
Patent WO-2019230796-A1 (WO)
Title: Valve device
Inventor: NOMURA RYO
IPC: F16K5/08
Filed: 2019-05-29
Abstract: A partition section (60) has: a partition section main body (61) provided in a housing opening (210) so as to partition an internal space (200) and the outside of a housing main body (21); and a shaft insertion hole (62) formed in the partition section main body (61) such that an end of a shaft (32) can pass therethrough. A drive unit (70) is provided on the opposite side to the internal space (200) relative to the partition section (60) and can rotatably drive a valve body via one end of the shaft (32). The partition section (60) has a partition through-hole (65) that extends towards the outside from the shaft insertion hole (62) and opens to an outer wall of the partition section main body (61).
Patent WO-2020004015-A1 (WO)
Title: Dynamic variable capacity memory device and storage capacity dynamic variable method
Inventor: HOMEMOTO TORU
IPC: H04L13/08
Filed: 2019-06-11
Abstract: [Problem] To make a data storage capacity variable and to increase or reduce the storage area in a device mounted in a communication device, without stopping the communication device. [Solution] A dynamic variable capacity memory device 40 is mounted in a plurality of communication devices 20a-20d that communicate with each other via a bidirectional path, and is configured from an electronic circuit that is a gate array, which has a variable circuit configuration is capable of storing data. The dynamic variable capacity memory device 40 comprises a storage unit in which there is used a storage circuit (FPGA) based on an electronic circuit that is a gate array capable of storing data. The dynamic variable capacity memory device 40 is also configured to comprise a control unit that: establishes an allotment that corresponds to a data capacity transmittable through a path between the communication devices 20a-20d; and performs a capacity variable control for forming, with a storage circuit, a storage area of storage capacity for storing data of the corresponding path in the storage unit, in accordance with the allotment.
Patent WO-2020255362-A1 (WO)
Title: 光アンプ、受信機、光伝送システム及び光アンプ設計方法
Inventor: SAITO KOHEI
IPC: H04B10/61
Filed: 2019-06-21
Abstract: 送信機（１７）と光ファイバ（１４）を介して接続された受信機（１８）の受信側に、飽和出力状態の光アンプ（２１）を接続した。飽和出力状態では、光アンプ（２１）に入力される光信号（２２ｉ）のパワー（入力光パワー）が所定以上大きい場合に、光アンプ（２１）から出力される光信号（２２ｏ）のパワー（出力光パワー）の変動が小さくなる平坦なカーブの飽和特性となる。このため、光アンプ（２１）から受信機（１８）に入力される光信号（２２ｏ）による情報を適正に受信可能となる。
Patent WO-2020013008-A1 (WO)
Title: Pipe structure and construction method
Inventor: SATO TOSHIYUKI
IPC: F16L55/00
Filed: 2019-07-01
Abstract: This pipe structure comprises: a straight pipe configured from a polyolefin material; a pair of protrusions configured from a polyolefin material, extending circumferentially along the outer surface of the straight pipe, and separated from each other in the axial direction of the straight pipe; a pipe material having a plurality of metal divided cases that are divided in the circumferential direction of the straight pipe and that enclose part of the straight pipe; and a pair of engaging parts that are formed on at least one of the divided cases and that respectively engage with the pair of protrusions.
Patent WO-2020009157-A1 (WO)
Title: Heat sink
Inventor: NAKAMURA TAKUMI
IPC: H01L23/36
Filed: 2019-07-03
Abstract: This heat sink is provided with: a base plate; a cover that overlaps the base plate; a plate-like fin that projects from the base plate perpendicularly to the base plate and that is positioned between the base plate and the cover; a first fin group that comprises a plurality of fins spaced apart from each other in a first direction parallel to the base plate; a second fin group that comprises a plurality of fins spaced apart from each other in the first direction and that is adjacent to the first fin group, with a gap therebetween, in a second direction parallel to the inflow direction of a refrigerant and perpendicular to the first direction. The fin longitudinal direction is conforms to the second direction. The positions of the fins belonging to the second fin group in the first direction are not aligned with the positions of the fins belonging to the first fin group in the first direction.
Patent WO-2020049892-A1 (WO)
Title: Vehicle-mounted radar system
Inventor: KURODA MASAYOSHI
IPC: G01S7/497
Filed: 2019-07-26
Abstract: Provided is a vehicle-mounted radar system that is capable of improving object detection performance in response to a situation. This vehicle-mounted radar system comprises laser radars 2A–2D for radiating laser light onto the surroundings of a vehicle 1 and receiving light reflected by an object in the surroundings of the vehicle 1 and a control device 3 for controlling the laser radars 2A–2D and recognizing an object on the basis of light reception results from the laser radars 2A–2D. On the basis of the result of the object recognition, the control device 3 determines whether there is an undetected area caused by an object blocking the laser light of one of the laser radars 2A–2D. For example, if there is an undetected area 11 caused by another vehicle 10 blocking the laser light of laser radar 2B, the detection range of laser radar 2A, which is adjacent to laser radar 2B, is widened such that at least a portion of the undetected area 11 can be detected.
Patent WO-2020031974-A1 (WO)
Title: Hydraulic drive device for work machine
Inventor: TAKIMOTO Yoshifumi
IPC: F15B20/00
Filed: 2019-08-05
Abstract: Provided is a hydraulic drive device for a work machine with which the frequency of maintenance can be reduced. A controller (20) opens a first opening/closing valve (25a), closes a second opening/closing valve (25b), switches a first direction switching valve (30a) to a first position (A), and switches a second direction switching valve (30b) to a third position (C), whereby pressure oil from a hydraulic pump (1a) is supplied from the first opening/closing valve to an actuator (5a) via the first direction switching valve. When history information of the first opening/closing valve is assessed to satisfy a prescribed condition, the controller closes the first opening/closing valve, opens the second opening/closing valve, switches the first direction switching valve to a second position (B), and switches the second direction switching valve to a fourth position (D), whereby pressure oil from the hydraulic pump is supplied from the second opening/closing valve to the actuator via the second direction switching valve. For example, the controller determines that the prescribed condition is satisfied when the number of operations of the first opening/closing valve has reached a first prescribed value.
Patent WO-2020036135-A1 (WO)
Title: Human norovirus-like particle and use thereof
Inventor: SATO SHINTARO
IPC: C12N15/13
Filed: 2019-08-09
Abstract: The present invention addresses the problem of providing an antigen for generating an antibody for inhibiting infection of multiple types of HuNov, a use thereof, and an antibody for inhibiting infection of multiple types of HuNov. Specifically, the present invention provides: a method for producing an antibody for inhibiting infection of different genotypes of human norovirus (HuNoV) to intestinal epithelial cells, comprising immunization using the full length or a part of VP1 protein of GII.17 HuNoV as an antigen; and an antibody for inhibiting infection of a plurality of different genotypes of HuNoV to intestinal epithelial cells.
Patent WO-2021038854-A1 (WO)
Title: Control device, system, and method
Inventor: TAZUME Toshiaki
IPC: G08G5/02
Filed: 2019-08-30
Abstract: A control device (200) is provided with: a traveling body control unit (230) for causing a traveling body to travel in a target area; an acquisition unit (210) for acquiring state information indicating the state of a surface on the target area during traveling of the traveling body in the target area; and a determination unit (240) for determining whether or not a flying body can land on the target area, on the basis of the acquired state information.
Patent WO-2021064825-A1 (WO)
Title: Catheter
Inventor: KAWAGUCHI KEISUKE
IPC: A61M25/00
Filed: 2019-09-30
Abstract: [Problem] To enable a mesh member to be appropriately expanded. [Solution] A catheter 1 is provided with: a tube-like mesh member 21 expandable in the radial direction; a hollow shaft 11 connected to a proximal end portion of the mesh member 21; a hollow distal tip 41 connected to a distal end portion of the mesh member 21; and a plurality of core wires 51, each of which has a distal end portion 41 connected to the distal end portion of the mesh member 21 and/or the distal tip 41 and extends through the inside of the mesh member 21 and the hollow shaft 11. The distal end portion of each of the plurality of core wires 51 is connected at a position away from the center of the distal end portion of the mesh member 21 and/or the distal tip 41 in a view from the distal end.
Patent WO-2020116010-A1 (WO)
Title: 触覚及び温度のフィードバックシステム
Inventor: INAGAKI TAKEO
IPC: G06F3/01
Filed: 2019-10-03
Abstract: 電子デバイスが、異環境下で動く操作対象を実環境下で操作するユーザの部位を押圧可能であり、且つ形状を変化可能な一つ以上の変形インターフェースと、ユーザが部位で知覚する温度を変化可能である一つ以上の温度変化部を備え、フィードバックシステムが、電子デバイスと、変形インターフェースの形状を変化させるアクチュエータの動作を操作対象が得ていると推定される触覚の変化に基づいて制御するアクチュエータ制御部と、ユーザが部位で知覚する温度を変化可能な温度変化部の温度を操作対象が知覚していると推定される温度の変化に基づいて制御する温度制御部を備える。
Patent WO-2020080160-A1 (WO)
Title: Vertical resonator-type light-emitting element
Inventor: KURAMOTO MASARU
IPC: H01S5/183
Filed: 2019-10-07
Abstract: The present invention has: a substrate; a first multi-layer reflective mirror formed upon the substrate; a light-emitting structural layer formed upon the first multi-layer reflective mirror and including a light-emitting layer; and a second multi-layer reflective mirror formed upon the light-emitting structural layer and constituting a resonator in conjunction with the first multi-layer reflective mirror. The light-emitting structural layer has: a low-resistance region annularly provided between the first multi-layer reflective mirror and the second multi-layer reflective mirror; and a high-resistance region formed inside the low-resistance region and having a higher electrical resistance than the low-resistance region.
Patent WO-2020090373-A1 (WO)
Inventor: IRINO NARUHIRO
IPC: B23Q15/18
Filed: 2019-10-08
Abstract: Provided is a thermal displacement correction method which is based on machine learning methodology and yet makes it possible, on the user side, to calculate an appropriate amount of thermal displacement corresponding to a user-side machine tool, and to correct the thermal displacement. In a target user-side machine tool, on the basis of a parameter that defines the relationship between the temperature of a predetermined measurement part and the amount of workpiece-tool thermal displacement, an amount of thermal displacement corresponding to the measurement temperature is calculated, and the positioning location between a workpiece and a tool is corrected in accordance with the calculated amount of thermal displacement. On the manufacturer side, operating status information pertaining to the target user-side machine tool is acquired, the same operating status as the acquired user-side operating status is reproduced using a machine tool of the same type as the target user-side machine tool on the basis of the acquired operating status information, the temperature of the same measurement part as that of the target user-side machine tool and the amount of workpiece-tool thermal displacement are measured during the reproduction, a parameter is calculated through machine learning on the basis of the obtained temperature and amount of thermal displacement, and the parameter for the user-side machine tool is updated with the calculated parameter.
Patent WO-2021074979-A1 (WO)
Inventor: HARADA GAKU
IPC: B23Q11/10
Filed: 2019-10-16
Abstract: This cutting insert comprises a bottom surface, a top surface, which is on the opposite side from the bottom surface, and a cutting edge portion. The cutting edge portion is located on the top surface side. The cutting edge portion is formed by a sintered body containing cubic boron nitride particles. The volume ratio of the cubic boron nitride particles in the sintered body is 50% or more. The cutting edge portion has a rake face, a flank connected to the rake face, and a cutting edge located at the ridge line between the rake face and the flank. The rake face is inclined with respect to the bottom surface so that the distance from the bottom surface decreases towards the cutting edge. A coolant flow path is formed inside the cutting edge portion. The coolant flow path has a coolant jet opening in the rake face. The distance between the coolant flow path and the bottom surface is constant, or decreases towards the coolant jet opening.
Patent WO-2021075043-A1 (WO)
Inventor: FUJITA TOYOHISA
IPC: A61P35/00
Filed: 2019-10-18
Abstract: [Problem] Because ultrafine bubbles can persist for a long period of time, it is also possible to maintain the antioxidant capacity thereof for a long period of time. However, the effect that ultrafine bubbles of various gases have on active oxygen scavenging is unknown, so this problem was studied. [Solution] By means of this ultrafine bubble-containing solution, this beverage containing said solution, and this drug, it is possible to provide a ultrafine bubble-containing solution, a beverage containing this, and a drug which have active oxygen scavenging capacity, which have a cytotoxic effect on cancer cells and an antitumor effect on cancer-bearing mice, and which contain carbon dioxide and/or hydrogen gas inside of the ultrafine bubbles.
Patent WO-2020085400-A1 (WO)
Inventor: ABE KIYOFUMI
IPC: H04N19/46
Filed: 2019-10-23
Abstract: This encoding device (100) comprises a circuit and a memory connected to the circuit. During device operation, the circuit describes, in an encoded bitstream, a signal which indicates whether or not it is possible to process a block to be processed in pipeline processing units (S201), determines whether or not to use restrictions for processing the block to be processed in pipeline processing units, on the basis of whether it is possible to process the block to be processed in pipeline processing units (S202), and if it has been determined that restrictions are to be used, encodes the block to be processed using restrictions, and if it has been determined that restrictions are not to be used, encodes the block to be processed without using restrictions (S203).
Patent WO-2021084585-A1 (WO)
Inventor: TAHATA KAZUYORI
IPC: H02H3/087
Filed: 2019-10-28
Abstract: This DC circuit breaker (1) cuts off DC current flowing in a DC line (2). The DC circuit breaker (1) is provided with: a fault current breaker unit (3), which is a first breaker unit, and a load current breaker unit (4), which is a second breaker unit, connected in series with each other; a capacitor (5) and a reactor (6) which are connected in parallel with the fault current breaker unit (3) and the load current breaker unit (4). When a fault occurs in the DC line (2), the fault current breaker unit (3) performs an opening operation in accordance with a command inputted to the fault current breaker unit (3). During steady-state operation in which DC current flows to a load connected to the DC line (2), the load current breaker unit (4) performs an opening operation in accordance with a command inputted to the load current breaker unit (4).
Patent WO-2020095985-A1 (WO)
Title: Peptide-nucleic acid complex
Inventor: UENO SHINGO
IPC: C07K17/00
Filed: 2019-11-07
Abstract: Provided is a method for producing a peptide-nucleic acid complex that contains a peptide and nucleic acid encoding the peptide. The method comprises a step of preparing a nucleic acid containing a first coding sequence that encodes a peptide, a second coding sequence that encodes a transpeptidase, and a third coding sequence that encodes a motif for recognizing the transpeptidase, the nucleic acid including a transpeptidase N-terminal substrate motif added thereto; a step of synthesizing, from the transpeptidase N-terminal substrate motif-added nucleic acid and using a cell-free protein synthesis system, a chimeric protein that contains a domain of the peptide, a domain of the transpeptidase, and the motif for recognizing the transpeptidase; and a step of forming the peptide-nucleic acid complex by means of the transpeptidase domain.
Patent WO-2020170538-A1 (WO)
Title: 固液分離装置
Inventor: WADA KOJI
IPC: B01D29/17
Filed: 2019-11-26
Abstract: （要約） （課題）複数の可動部材と、その可動部材に接触しない状態で可動部材を貫通して延びるスクリューとを有し、そのスクリューの回転によって、汚泥を搬送しながら、汚泥を脱水する固液分離装置において、汚泥に対して絞り作用を与えて、汚泥の脱水効率を高める。 （解決手段）複数の可動部材４Ａ，４Ｂを連結棒４４によって一体に連結して第１の可動ユニット４１を構成し、他の複数の可動部材４Ｃ，４Ｄを連結棒４４Ａによって一体に連結して第２の可動ユニット４１Ａを構成し、第１の可動ユニット４１の可動部材４Ａ，４Ｂと、第２の可動ユニット４１Ａの可動部材４Ｃ，４Ｄを位相差をもって往復運動させる。
Patent WO-2021106172-A1 (WO)
Title: ルール生成装置およびルール生成プログラム
Inventor: KUROGOME YUMA
IPC: G06F21/56
Filed: 2019-11-28
Abstract: ルール生成装置（１０）は、マルウェアの解析結果を用いて、マルウェアの痕跡を検知するためのルールの候補として、それぞれ異なる抽象度のルール候補を列挙する。そして、ルール生成装置（１０）は、列挙したルール候補について、所定の評価関数を用いて評価値をそれぞれ算出し、該評価値に基づいてルール候補のなかからルールを選別する。
Patent WO-2020129915-A1 (WO)
Inventor: HASHIMOTO TOMOYA
IPC: A01M31/00
Filed: 2019-12-16
Abstract: 【課題】簡単な機構で猫や犬を安全かつ容易に捕獲できる動物捕獲網を提供する。 【解決手段】　上方の開口部と下方の底部と前記開口部と底部を隔てる所定の深さとを有する網２と、前記網２の開口縁部に沿って前記網２と連結されるフレーム１とを備え、前記フレーム１は、それぞれが独立した操作を行うことができるように対向して離間する二本一組の操作フレーム１０，１０を含むように構成した。
Patent WO-2020137818-A1 (WO)
Inventor: TAO YOHEI
IPC: H01M50/489
Filed: 2019-12-19
Abstract: 低温出力特性及び高温保存特性に優れた非水電解質二次電池を提供する。正極芯体と、正極芯体上に形成された正極活物質を含む正極活物質層を有する正極板と、負極芯体と、負極芯体上に形成された負極活物質を含む負極活物質層を有する負極板と、正極板と負極板の間に配置されたセパレータと、非水電解液と、を備えた非水電解質二次電池であって、非水電解液はリチウムビスオキサレートボレートを含有し、非水電解液に含まれるリチウムビスオキサレートボレートの総量をＡ（μｍｏｌ）とし、負極活物質層においてセパレータを介して正極活物質層と対向する領域に含まれる負極活物質の総面積をＢ（ｍ２）としたとき、Ａ/Ｂの値が２～１１である。
Patent WO-2020149146-A1 (WO)
Inventor: OGAWA KOUJI
IPC: H04N13/117
Filed: 2019-12-27
Abstract: 本技術は、自由視点データの再生編集作業を、容易に行うことができるようにする画像処理装置、画像処理方法、及び、プログラムに関する。 複数の視点から撮影された複数の視点画像から生成される複数の時刻のオブジェクトの3Dモデルが3次元空間に配置されたストロボモデルを仮想視点から見た3Dストロボ画像に対する操作に応じて、複数の視点画像から生成される自由視点データの再生を制御する再生制御情報が生成される。本技術は、例えば、自由視点データの再生や編集等に適用することができる。
Patent JP-WO2018155385-A1 (JP)
Title: 硬質炭素膜とその製造方法および摺動部材
IPC: C23C14/32
Filed: 2018-02-19
Abstract: ＭｏＤＴＣ含有潤滑油中で使用される摺動部材において、耐摩耗性や耐焼き付き性を維持しながら、アブレーシブ摩耗の発生を効果的に抑制すると共に、大幅に摩擦係数が低下された硬質炭素膜を、生産性を低下させることなくコストアップを招くことなく製造する硬質炭素膜の製造技術を提供する。第１の硬質炭素膜の上に第２の硬質炭素膜が積層されて構成されており、第２の硬質炭素膜は第１の硬質炭素膜に比べて低硬度であり、第１の硬質炭素膜には第２の硬質炭素膜へ向けて突出するように隆起状形態物が複数形成されている硬質炭素膜。アークイオンプレーティング法を用いて表面に複数の隆起状形態物を成長させながら第１の硬質炭素膜を形成する工程と、ＣＶＤ法またはスパッタリング法を用いて第１の硬質炭素膜よりも低硬度の第２の硬質炭素膜を形成する工程とを含む硬質炭素膜の製造方法。
Patent JP-WO2018158994-A1 (JP)
Title: 変位計測装置および変位計測方法
IPC: G01B11/00
Filed: 2017-09-25
Abstract: 変位計測装置（２００）は、計測対象と、計測対象に接触位置において接触している荷重物とが撮像された撮像画像を用いて、荷重物による計測対象の変位を計測する変位計測装置であって、エリア設定部（２５０）と、変位算出部（２６０）とを備える。エリア設定部（２５０）は、撮像画像を生成する撮像装置と接触位置との距離を示す距離情報を用いて、撮像画像における検出エリアの大きさを設定する。変位算出部（２６０）は、撮像画像のうち検出エリア内の画像のみを用いて、変位を算出する。
Patent JP-WO2019187115-A1 (JP)
Title: センサ管理装置、センサ管理方法及びプログラム
IPC: G05B19/05
Filed: 2018-03-30
Abstract: センサ管理装置（１００）は、センサ装置（２００）によるセンシング結果を処理する処理装置（３００）に接続されてセンサ装置（２００）を管理する。センサ管理装置（１００）は、センサ装置（２００）から送信されるデータの形式を示す情報を含むセンサ情報（１３２）を取得する取得部（１２０）と、処理装置（３００）へ送信する際のデータの形式の指定を受け付ける受付部（１１０）と、センサ装置（２００）から受信したデータの形式を、センサ情報（１３２）により示される形式から受付部（１１０）によって受け付けられた指定の形式に変換して、形式が変換されたデータを処理装置（３００）へ伝送する伝送部（１４０）と、を備える。
Patent JP-WO2018181233-A1 (JP)
Title: 虚像を表示する表示装置
IPC: G09G3/34
Filed: 2018-03-27
Abstract: 虚像を表示する表示装置は、第１の映像光を出射する映像形成部（６）と、第１の映像光を反射して第２の映像光を出射する第１の反射部材（３１）と、第２の映像光を反射して第３の映像光を出射する第２の反射部材（３２）と、第３の映像光を基に映像を表示するスクリーン（１１）と、スクリーンに表示された映像を虚像として投影する投影部（４）とを備える。スクリーン（１１）は、投影部（４）に対して近接または離間する方向へ移動し、その際、第１の反射部材（３１）および第２の反射部材（３２）の少なくとも一方の移動、第１の反射部材（３１）の回転、および第２の反射部材（３２）の回転によって、第３の映像光の中心光線は、スクリーン（１１）に対する入射点の位置を保持して平行に移動し、第１の映像光の中心光線の光路長、第２の映像光の中心光線の光路長、および第３の映像光の中心光線の光路長の和は、一定となる。