baber/WOPTO huggingface dataset:
Patent WO-2023073776-A1 (WO)
Inventor: TESHIMA CHIKASHI
IPC: H05K13/04
Filed: 2021-10-25
Abstract: This component mounting device is provided with: a suction nozzle which performs a suctioning operation in which negative pressure air is supplied and a component is suctioned, and which performs a mounting operation in which the negative pressure air is cut off and the component is mounted on a board; a first negative pressure supply unit which can supply negative pressure air to the suction nozzle during the time period from when the suction nozzle starts the suctioning operation until the suction nozzle starts the mounting operation; a second negative pressure supply unit which can supply negative pressure air to the suction nozzle; a negative pressure detection unit which directly or indirectly detects the pressure value of the negative pressure air supplied to the suction nozzle; and a negative pressure supply control unit which actuates the second negative pressure supply unit in the case that the detected pressure value of the negative pressure air is closer to the atmospheric pressure value than a prescribed value set between the atmospheric pressure value and a vacuum value.
Patent WO-2022118592-A1 (WO)
Inventor: SATO YUYA
IPC: C22C38/44
Filed: 2021-11-01
Abstract: 高強度であり、板厚によらず、鋼板内で一様に極低温靭性に優れる鋼板を提供する。本発明の鋼板は、質量％で、Ｃ：０．０１～０．１５％、Ｓｉ：０．０１～０．５０％、Ｍｎ：０．０５～０．６０％、Ｎｉ：６．０～７．５％、Ｃｒ：０．０１～１．００％、Ｍｏ：０．０５～０．５０％、Ｐ：０．０３％以下、Ｓ：０．００５％以下、Ｎ：０．００１０～０．００８０％を含有し、残部がＦｅおよび不可避的不純物からなる成分組成を有し、１／４ｔにおける、－１９６℃での深冷処理前後での残留γ量の減少率が５体積％未満、かつ、深冷処理後の残留γ量が０．５体積％以上である。
Patent WO-2023079633-A1 (WO)
Inventor: MATSUMURA YUKI
IPC: H04W72/04
Filed: 2021-11-04
Abstract: 本開示の一態様に係る端末は、１つ以上の制御リソースセットと、チャネル状態情報参照信号（ＣＳＩ－ＲＳ）とが時間ドメインにおいて少なくとも一部が重複して設定されるとき、前記１つ以上の制御リソースセットのうち特定の制御リソースセットに関連する送信設定指示（Transmission　Configuration　Indication（ＴＣＩ））状態に基づいて、前記ＣＳＩ－ＲＳに適用する疑似コロケーション（Quasi-Co-Location（ＱＣＬ））想定を判断する制御部と、前記ＱＣＬ想定を適用した前記ＣＳＩ－ＲＳを受信する受信部と、を有する。本開示の一態様によれば、特定の参照信号のＱＣＬを適切に決定できる。
Patent WO-2022107659-A1 (WO)
Title: Procédé de commande, programme, et terminal
Inventor: MITANI AYAKA
IPC: H04M11/00
Filed: 2021-11-10
Abstract: La présente divulgation concerne un procédé de commande pour un premier terminal porté par un premier utilisateur et capable de communiquer avec un serveur par l'intermédiaire d'un réseau, le procédé de commande faisant appel aux étapes suivantes : le premier terminal établissant une communication sans fil à courte portée avec un second terminal porté par un second utilisateur (S11) ; le premier terminal demandant des informations d'article qui sont des informations concernant au moins un élément parmi un ou plusieurs articles portés par le second utilisateur, auprès du second terminal par l'intermédiaire de la communication sans fil à courte portée ou auprès du serveur par l'intermédiaire du réseau, utilisant des informations d'identification de l'au moins un article obtenu lorsque la communication sans fil à courte portée a été établie (S12) ; et le premier terminal acquérant les informations d'article (S13) et transmettant au serveur des informations factuelles d'acquisition d'article (S14) indiquant l'acquisition des informations d'article.
Patent WO-2023084741-A1 (WO)
Title: 設計システム、情報処理装置、記憶媒体、出力装置、及び方法
Inventor: TANABE KAZUKI
IPC: G06F8/10
Filed: 2021-11-12
Abstract: 情報処理装置は、設計対象の定義情報が入力された場合に、１又は複数の要件要素からなる定義情報、部品群で表された前記要件を示す要件情報、及び、部品群で表された構成を示す構成情報、の組が予め関連付けられた関連情報に基づいて、前記設計対象の定義情報に類似する定義情報に関連付けられた要件情報である類似要件情報を取得する類似情報取得部と、前記設計対象の定義情報に基づく要件情報に対して、前記類似要件情報が表す部品群の一部に適用された変換規則を適用した後に、前記構成生成処理を行うことで、新たな構成情報を生成する構成設計部と、を備える。
Patent WO-2022124027-A1 (WO)
Inventor: ASHIZAWA Yurino
IPC: A61K8/9761
Filed: 2021-11-17
Abstract: 皮膚外用剤組成物は、ハクシニン抽出物と、香料成分と、を含有する。香料成分は、酢酸リナリル、ｃｉｓ－ジャスモン、ヘキシルシンナミックアルデヒド、γ－ウンデカラクトン、ジヒドロジャスモン酸メチル、メチルγ－デカラクトン、リナロール、１，３，４，６，７，８－ヘキサヒドロ－４，６，６，７，８，８－ヘキサメチルシクロペンタ－γ－２－ベンゾピラン、エチルトリメチルシクロペンテニルブテノール、エチルリナロール、１６－ヒドロキシ－７－ヘキサデセン酸ラクトン、エチレンブラシレート、シクロペンタデセノライド、２，６－ジメチル－７－オクテン－２－オール、γ－メチルベンゼン－１－ペンタノール、イソブチルメチルテトラヒドロピラノール、及びラズベリーケトンからなる群から選択される少なくとも１つを含む。
Patent WO-2022138116-A1 (WO)
Inventor: KURIYAMA RYOUICHI
IPC: G06F21/32
Filed: 2021-12-06
Abstract: Provided are a portable electronic device and an IC card with which biometric authentication can be used to improve security while increasing convenience. A portable electronic device according to an embodiment has a biometric sensor, a communication interface, a first memory, a second memory, and a processor. The biometric sensor acquires biological information about a person. The communication interface communicates with a higher-level device. The first memory stores biological information of a registrant. The second memory stores a password. In response to a command that is received from the higher-level device by the communication interface and requests biometric authentication, the processor executes biometric authentication by means of the biological information acquired by the biometric sensor and the biological information stored in the first memory, and sets the comparison state of the password stored in the second memory to a comparison-completed state when the biometric authentication succeeds.
Patent WO-2022149399-A1 (WO)
Inventor: ITANI KAZUHIRO
IPC: H01L27/146
Filed: 2021-12-08
Abstract: [Problem] To provide a light detection device which is advantageous for reducing the unintended reflection and scattering of light at an element separation section. [Solution] A light detection device comprises: a plurality of photoelectric conversion elements that are arranged two-dimensionally to form a light-receiving region; an element separation section that is provided between adjacent photoelectric conversion elements; and an inter-pixel light blocking film that partitions a plurality of light transmission sections corresponding respectively to the plurality of photoelectric conversion elements. The amount and direction of deviation of a center position of each light transmission section from a center position of the corresponding photoelectric conversion elements are determined according to the distance and direction of the light transmission section from the center of the light-receiving region. The shape and size in plan view of at least some of the plurality of light transmission sections differ from the shape and size in plan view of the corresponding photoelectric conversion elements. The inter-pixel light blocking film is provided so as to overlap with a plurality of intersections of the element separation section in plan view.
Patent WO-2022201680-A1 (WO)
Title: Dispositif à semi-conducteur et capteur ultrasonore
Inventor: MATSUBARA HIDEKI
IPC: G01S7/524
Filed: 2021-12-20
Abstract: Le présent dispositif à semi-conducteur comprend : un circuit d'attaque configuré de façon à être apte à fournir des signaux d'attaque dans une bande ultrasonore à un élément piézoélectrique ; un circuit d'amortissement ayant une charge de résistance et une charge d'induction ; et un circuit de commande qui est apte à commander le circuit d'attaque, et qui est configuré de façon à pouvoir exécuter une opération de réduction de réverbération après l'arrêt de la fourniture du signal d'attaque à l'élément piézoélectrique. Le circuit de commande est configuré de façon à être apte, dans l'opération de réduction de réverbération, à connecter le circuit d'amortissement à l'élément piézoélectrique après qu'un signal de freinage ayant une phase différente de celle du signal d'attaque est fourni à l'élément piézoélectrique par le circuit d'attaque.
Patent JP-WO2020188745-A1 (JP)
Title: 演算装置、および入力装置
IPC: G01B11/26
Filed: 2019-03-19
Abstract: 少なくとも第１の部材と、第１の部材と異なる第２の部材とにより構成される部品が保持具により保持されている際に撮像された撮像データのうちの、第１の部材の撮像データに基づいて、保持具と部品との相対的な位置を演算し、第２の部材の撮像データに基づいて、保持具と部品との相対的な回転角度を演算する演算装置。
Patent JP-WO2020240617-A1 (JP)
Title: 電動機の製造方法、電動機、圧縮機、及び空気調和機
IPC: H02K1/27
Filed: 2019-05-24
Abstract: 電動機（１）の製造方法は、３相コイル（３２）の第１相のコイルを着磁用の電源のプラス側に接続することと、回転子（２）の磁極の中心を第１相のコイルの磁極の中心に対して第１の角度（θ１）回転させた状態で３相コイル（３２）に電流を通すことと、電源のプラス側との接続を、第１相のコイルから第２相のコイルに切り替えることと、回転子（２）の磁極の中心を第２相のコイルの磁極の中心に対して第２の角度（θ２）回転させた状態で３相コイル（３２）に電流を通すこととを有する。
Patent WO-2022154042-A1 (WO)
Inventor: YOSHIMURA YUKIHIRO
IPC: B42D25/328
Filed: 2022-01-13
Abstract: La présente invention concerne un stratifié d'hologramme volumique qui comporte un substrat et une section de stratifié d'hologramme volumique positionnée sur une surface du substrat. La section de stratifié d'hologramme volumique comporte une couche d'hologramme volumique qui contient un polymère d'un composé photopolymérisable et sur laquelle une frange d'interférence est enregistrée, et elle comporte également une couche de résine qui contient une résine transparente et qui est positionnée à côté de la couche d'hologramme volumique, lesdites couches étant agencées dans un ordre aléatoire ; et la longueur d'onde de lecture de la couche d'hologramme volumique change selon l'angle d'observation et l'angle d'incidence de la lumière d'éclairage reproduite, et la couleur de l'image reproduite à partir de la couche d'hologramme volumique change également selon les mêmes facteurs.
Patent WO-2022185735-A1 (WO)
Title: Impact detection malfunction prevention device, impact detection malfunction prevention method, and program
Inventor: OGAWA TATSURO
IPC: G01P15/00
Filed: 2022-01-14
Abstract: This impact detection malfunction prevention device for preventing malfunction at the time of impact detection in an impact detection device, comprises: an accident determination unit that determines whether or not an impact is caused by an accident, on the basis of information relating to the detected impact and a captured video; a number-of-times recording unit that, when it has been determined that the impact is not caused by an accident, records a position acquired at a time point when the impact has been detected and the number of times it has been determined that the impact is not caused by an accident at the position; a registration unit that, when the number of times regarding the recorded position has becomes not less than a predetermined number of times, registers the position as an impact detection malfunction position which is not subjected to impact detection occasion processing; and an impact detection malfunction prevention unit that does not allow the impact detection occasion processing unit to perform the impact detection occasion processing on the impact detection malfunction position.
Patent WO-2022168993-A1 (WO)
Title: Methods for suppressing soil pests
Inventor: HUANG HUAZHANG
IPC: A01N43/56
Filed: 2022-01-28
Abstract: A method of protecting a plant susceptible to Coleoptera pest damage or Coleoptera pest injury including applying a compound having the structure to a locus of a plant susceptible to Coleoptera pest damage or injury.
Patent WO-2022201951-A1 (WO)
Title: Superconducting coil device, superconducting accelerator, and particle beam therapy device
Inventor: TAKAYAMA SHIGEKI
IPC: H05H7/04
Filed: 2022-02-10
Abstract: A superconducting coil device (20) according to this embodiment comprises at least one superconducting coil (23) that is formed by a plurality of turns (25), where one wound loop section of a superconducting wire material that has been wound in an annular shape is treated as one turn (25). The superconducting coil (23) forms a shape following an outer circumferential surface of a pipe-shaped structure section (21) that forms a pipe shape. The turns (25) each have a coil lengthwise section (27) extending along the axial direction of the pipe-shaped structure section (21). The positioning configuration of the coil lengthwise sections (27) differs between a main magnetic field production region (51A) where a main magnetic field is produced and a magnetic field correction region (51C) where a corrective magnetic field is produced.
Patent WO-2023157093-A1 (WO)
Inventor: ATA DAIKI
IPC: G06V30/20
Filed: 2022-02-15
Abstract: A training-data acquisition unit (210) acquires training data including the following items of data: item image data; image-filter related data indicating a combination of image filters used for image processing of the item image data, as well as parameter values for the individual image filters; and OCR score data indicating character recognition scores output through OCR when the item image data was subjected to the image processing by using the image filters based on the image-filter related data. A trained-model generation unit (220), through machine learning using the training data, generates a trained model indicating relationships among the item image data, the image-filter related data, and the OCR score data.
Patent WO-2022259632-A1 (WO)
Title: Information processing device and information processing method
Inventor: HAMADA TOSHIYA
IPC: H04N19/174
Filed: 2022-02-21
Abstract: This information processing device comprises a rendering unit and an encoding unit. The rendering unit performs a rendering process on three-dimensional spatial data on the basis of field-of-view information pertaining to a user's field of view, to generate two-dimensional video data corresponding to the field of view of the user. The encoding unit calculates, with respect to each of a plurality of divided regions into which the display region of the two-dimensional video data generated is divided, structural similarity (SSIM) as an evaluation value numerically expressing degradation of image quality due to encoding, or calculates, with respect to each of the plurality of divided regions, video multimethod assessment fusion (VMAF) as the evaluation value; sets a quantization parameter for each of the plurality of divided regions so that the evaluation values for the plurality of divided regions become uniform; and performs an encoding process on the two-dimensional video data on the basis of the quantization parameters set.
Patent WO-2022190936-A1 (WO)
Inventor: SUZUKI YUKO
IPC: C08F220/10
Filed: 2022-02-28
Abstract: 下記式（１）で表される液晶性化合物と、キラル化合物と、を含み、少なくとも１つの重合性基を含む化合物の総量に対する１つの重合性基を含む化合物の総量の割合が、６０質量％以上である、重合性組成物及びその応用。
Patent WO-2023166614-A1 (WO)
Inventor: HOSOMI ITARU
IPC: G09B9/00
Filed: 2022-03-02
Abstract: This information processing device 10 comprises: an exercise condition acquisition unit 11 that acquires, as an exercise condition, an exercise execution time indicated by a participant in a cybersecurity exercise; and an attack operation generation unit 12 that generates cyberattack scenarios to be used in the cybersecurity exercise and extracts a portion of the generated scenarios that fits within the indicated execution time, thereby creating a string of attack operations to be carried out in the cybersecurity exercise.
Patent WO-2023170764-A1 (WO)
Inventor: FURUTA TOMOHIRO
IPC: B25J9/22
Filed: 2022-03-07
Abstract: 教示点を生成するための探索プログラムの作成におけるユーザの作業を大幅に簡素化できるプログラム生成装置を提供する。プログラム生成装置は、センサによる作業線の探索開始位置及び探索終了位置の入力と、センサの検出条件を含む探索プログラムに関する情報の入力とを受け付ける受付部と、受付部が受け付けた内容に基づいて、作業線の位置に応じた教示点を定めるための探索プログラムを生成するプログラム生成部とを有する。
Patent WO-2022202731-A1 (WO)
Title: Cell culture system
Inventor: IGARASHI Masatsugu
IPC: C12M1/00
Filed: 2022-03-22
Abstract: This cell culture system (10) comprises: a reactor (12); a distribution channel (16) through which a medium flows in and out of the reactor (12); a waste liquid channel (18) through which the medium is discharged from the distribution channel (16); and a waste liquid container (62) capable of storing the medium transported via the waste liquid channel (18). The waste liquid channel (18) has a temporary storage part (64) capable of temporarily storing the medium. The waste liquid container (62) is located below the temporary storage part (64) in the direction of gravity. The temporary storage part (64), which is located above the distribution channel (16) in the direction of gravity, temporarily stores the medium discharged from the distribution channel (16) and allows the medium to flow out toward the waste liquid container (62).
Patent WO-2022215512-A1 (WO)
Title: Coating liquid for electrode, electrode, and electrochemical device
Inventor: WADA SHINJI
IPC: H01M4/13
Filed: 2022-03-22
Abstract: A coating liquid for electrodes, that contains the fluorine-containing ether compound represented by formula 1 below; and, an application for the coating liquid for electrodes. (1): A-[(OX) m -T-Y r ] n . In formula 1, n represents an integer from 3 to 6. Descriptions for the other signs in formula 1 are omitted.
Patent WO-2023281854-A1 (WO)
Title: Rubber composition for tire
Inventor: SUGIMOTO HIROKI
IPC: B60C1/00
Filed: 2022-03-25
Abstract: A rubber composition for tires is provided with which both wet gripping performance and wear resistance are attained. The rubber composition is obtained by incorporating 10-50 parts by mass of a thermoplastic resin into 100 parts by mass of a diene-based rubber comprising 60 mass% or more styrene/butadiene rubber which has a styrene content of 5-30 mass% and a vinyl content of 10-35 mass%. In a mixture obtained by mixing the diene-based rubber with the thermoplastic resin in a mass ratio of 1:1, the difference (Tga-Tgm) between a theoretical glass transition temperature (Tga) of the mixture, which is calculated from the average glass transition temperature (Tg1) of the diene-based rubber and the glass transition temperature (Tg2) of the thermoplastic resin, and a measured glass transition temperature (Tgm) of the mixture is 5-50°C and the difference (Tg2-Tg1) between the Tg1 and the Tg2 is 110-150°C. The thermoplastic resin is contained in an amount of 30 mass% or larger with respect to the sum of all the plasticizer ingredients, which is taken as 100 mass%, contained in the rubber composition.
Patent WO-2023188089-A1 (WO)
Inventor: SAKAUE YUKI
IPC: H04L47/10
Filed: 2022-03-30
Abstract: 本発明は、無線ネットワークの時々刻々と変動する最大スループットに追従しつつ、それぞれのトラフィックフローに割り当てた帯域を保証することができる制御システム、制御方法、コントローラ、及びプログラムを提供することを目的とする。　本発明に係る制御システムは、無線ネットワーク１５を介してパケットを相互に伝送する端末１１及びアクセスポイント１２と、無線ネットワーク１５の最大スループットを把握するテレメトリ装置１６と、端末１１及びアクセスポイント１２に対して送信制御を行うコントローラ１３と、を備えており、コントローラ１３は、テレメトリ装置１６から通知された前記最大スループット、及び少なくとも端末１１から通知されたトラフィックフロー毎の必要帯域に基づいて前記トラフィックフロー毎の帯域制御値を決定し、前記帯域制御値を端末１１及びアクセスポイント１２に通知することを特徴とする。
Patent WO-2022224826-A1 (WO)
Inventor: MATSUMOTO TOMOYUKI
IPC: G03F7/038
Filed: 2022-04-06
Abstract: 本発明の課題は、塗膜を露光した後、次工程までに時間を要した場合でも、塗膜の硬化不良を発生させず、精密な形状を有するパターンを製造できる感光性組成物を提供することである。　本発明の感光性組成物は、重合体（Ａ）、重合性化合物（Ｂ）、光酸発生剤（Ｃ）、および溶剤（Ｄ）を含有する感光性組成物であって、前記重合性化合物（Ｂ）が下記式（１）に示す基を２以上有するエポキシ化合物（Ｂ－１）および前記エポキシ化合物（Ｂ－１）以外の特定のエポキシ化合物（Ｂ－２）を含み、前記重合性化合物（Ｂ）の合計１００質量％のうち、脂環式基と縮環したエポキシ基を含むエポキシ化合物が５０質量％以上である。　－Ｌ－Ｅｐ　…（１）
Patent WO-2022224964-A1 (WO)
Title: Information processing device and information processing method
Inventor: TSURU Takumi
IPC: G06T19/00
Filed: 2022-04-19
Abstract: According to one aspect of the present technology, an information processing device comprises a rendering unit and a generation unit. On the basis of visual field information about the visual field of a user, the rendering unit performs rendering processing on three-dimensional space data and thereby generates two-dimensional video data that corresponds to the visual field of the user. On the basis of a parameter for the rendering processing, the generation unit generates a salience map that represents the salience of the two-dimensional video data. The present invention can thereby deliver high-quality virtual video.
Patent WO-2023276603-A1 (WO)
Inventor: YAMAMOTO HIDENORI
IPC: H02J13/00
Filed: 2022-06-09
Abstract: La présente invention comprend : une unité de communication qui reçoit des données relatives au transfert d'énergie à partir d'un serveur de consommateur prévu pour chaque consommateur d'une pluralité de consommateurs ; une unité de traitement de formation de groupe qui, lorsque des informations de profil concernant un consommateur comprises dans les données reçues liées au transfert d'énergie comprennent une installation prédéfinie sur le transfert d'énergie, sélectionne le consommateur en tant que consommateur représentatif, sélectionne, en tant que consommateur membre, un consommateur dont le degré de correspondance d'informations de comportement, qui sont associées à à l'offre et la demande d'énergie du consommateur représentatif et sont associées à des informations de profil concernant le consommateur représentatif sélectionné et aux données relatives au transfert d'énergie, est supérieur ou égal à un seuil prédéfini, et forme un groupe des consommateurs représentatifs et consommateurs membres sélectionnés ; une unité de traitement de substitution de prédiction qui prédit, pour le consommateur représentatif sélectionné dans le groupe formé, la situation liée à l'offre et la demande d'énergie, au moyen d'un algorithme de prédiction prédéfini, et utilise le résultat de prédiction en tant que résultat de prédiction pour des consommateurs membres ; et une unité de traitement de substitution de données qui substitue les résultats de prédiction en tant que résultats de prédiction de consommateurs clients compris dans le groupe.
Patent WO-2023238368-A1 (WO)
Title: Task priority control for network resource
Inventor: OKADA JUN
IPC: H04L41/0895
Filed: 2022-06-10
Abstract: This network management device executes determination processing and priority processing. In the determination processing, when an instruction is issued to execute, in order, first tasks registered in a first queue, it is determined whether an execution condition for second tasks registered in a second queue and having a higher execution priority than the first tasks has been met. In the priority processing, an instruction is issued to prioritize execution of the second tasks when it is determined that the execution condition for the second tasks has been met.
Patent WO-2022265103-A1 (WO)
Inventor: DOI TOSHIHIRO
IPC: G01N33/553
Filed: 2022-06-17
Abstract: 本発明のセンサは、第１電極（２１）、第２電極（２２）、第３電極（２３）、前記第１電極（２１）と前記第２電極（２２）とを接続する半導体膜（２４）、前記第１電極（２１）と前記第２電極（２２）と前記半導体膜（２４）とを被覆する固体電解質皮膜（２５）を有し、前記固体電解質皮膜（２５）は、外部に露出する露出面（２５ａ）を有し、前記第３電極（２３）は、前記固体電解質皮膜（２５）の前記露出面（２５ａ）が導電性液（Ｌｑ）と接触しているときに、前記導電性液（Ｌｑ）を介して、前記固体電解質皮膜（２５）の前記露出面（２５ａ）に電界を印加可能な位置に配置されるように構成されている。
Patent WO-2024013800-A1 (WO)
Title: Optical fiber cable
Inventor: KIKUCHI MASASHI
IPC: G02B6/44
Filed: 2022-07-11
Abstract: The purpose of the present disclosure is to make it possible to apply LPG over the entire length of an optical fiber without hampering the work for removing the optical fiber.　The present disclosure is an optical fiber cable (90) in which are gathered one or more optical fibers (91) through which at least two modes propagate, the optical fiber cable (90) being characterized by comprising a linear material (94) that is in contact with at least one of the optical fibers (91), wherein the thickness of the linear material (94) changes periodically in the longitudinal direction of the linear material (94).
Patent WO-2024013948-A1 (WO)
Title: Semiconductor laser drive device
Inventor: TAKEUCHI KAZUTAKA
IPC: H01S5/0683
Filed: 2022-07-14
Abstract: In the present invention, an initial setting circuit (11) holds an initial setting value corresponding to a preset target light amount of a semiconductor laser element (2). A differential amplifier (17) acquires, from a first optical detection element (3), a measured light amount indicating the light amount generated by the semiconductor laser element (2), and outputs a difference signal indicating the difference between the measured light amount and the target light amount. A correction circuit (13) generates a correction setting value by correcting the initial setting value on the basis of the difference signal. A current generating circuit generates and supplies to the semiconductor laser element (2) a drive current having a magnitude corresponding to the initial setting value or the corrected setting value. The correction circuit (13), during an operation period in which the drive current having a magnitude corresponding to the initial setting value or the corrected setting value is continuously or intermittently supplied to the semiconductor laser element (2) to operate the semiconductor laser element (2), generates or updates the corrected setting value on the basis of the difference signal so as to reduce the difference between the measured light amount and the target light amount.