baber/WOPTO huggingface dataset:
Patent WO-2020107190-A1 (WO)
Title: Power frequency voltage withstanding and arc-extinguishing packaged varistor and packaging method
Inventor: XIAO XIAOJU
IPC: H01C7/10
Filed: 2018-11-27
Abstract: A power frequency voltage withstanding and arc-extinguishing packaged varistor and a packaging method. A mixture containing an insulating plastic material and an arc resistant material is used to package a voltage-dependent chip (1). Alternatively, a voltage-dependent chip (1) is enclosed by an insulating conformal layer, and then is packaged with a mixture containing an insulating plastic material and an arc resistant material. Alternatively, a sand-fixing protection layer (5) is applied after the voltage-dependent chip has been packaged with the insulating conformal layer and the mixture. Preferably, the arc resistant material is selected from quartz sand, or silanised quartz sand. Preferably, the insulating plastic material is selected from an epoxy resin, a polysiloxane, a silicone resin or a silicone rubber. The invention fixes a position of quartz sand, and employs the characteristic that a softening temperature of the quartz sand is lower than a melting point of a zinc oxide voltage-dependent component, such that in the process of degradation of a voltage-dependent chip (1), the SiO2 melts first, repairing the voltage-dependent component and stopping the degradation process. A varistor packaged by the above method has greatly improved power frequency withstand voltage, arc discharge resistance and surge prevention, and can reduce manufacturing costs.
Patent WO-2020113463-A1 (WO)
Inventor: WU JINQIU
IPC: H04B1/707
Filed: 2018-12-05
Abstract: The present invention relates to a 5G multi-carrier spread spectrum underwater acoustic communication method, belongs to the field of underwater acoustic communication, and relates to generalized frequency division multiplexing (GFDM) underwater acoustic communication technology and spread spectrum underwater acoustic communication technology. A GFDM spread spectrum underwater acoustic communication system suitable for use in the underwater acoustic field provided by the present invention implements effective information transmission in an underwater acoustic channel of limited bandwidth resources. The present invention aims to provide an effective information transmission method for the field of underwater acoustic communication of limited channel bandwidth resources, and the method has important significance for development of underwater acoustic technology.
Patent WO-2019237700-A1 (WO)
Title: Positioning method and apparatus for display screen in optical module
Inventor: FANG BIN
IPC: G02B27/62
Filed: 2018-12-18
Abstract: A positioning method and apparatus for a display screen (1) in an optical module. The positioning method for the display screen (1) in the optical module comprises the following steps: light paths of an optical lens (2) and image receiving device (3) of a product are coaxially arranged; provide the display screen (1), activate the display screen (1), the display screen (1) displays an image, and a light path formed by a light ray of the image passes through the optical lens (2); the image receiving device (3) receives the light path passing through the optical lens (2) in real time to obtain a virtual image; calculate a slope deviation of the display screen (1); calculate a distance deviation from the display screen (1) to the optical lens (2); calculate a plane position deviation of the display screen (1); and calibrate a relative position of the display screen (1) according to a calculation result. The positioning method and apparatus for the display screen (1) in the optical module have a technical effect that a position deviation of six degrees of freedom between the display screen (1) and the optical lens (2) can be detected.
Patent WO-2020124355-A1 (WO)
Inventor: LI JING
IPC: G06T5/50
Filed: 2018-12-18
Abstract: The present disclosure relates to an image processing method comprising: performing n-1 downsamplings on a raw image, so as to generate images of n respective resolutions; performing edge-preserving filtering on each of the images, so as to obtain high frequency information and filtering results; combining high frequency information of the ith image with high frequency information of the i-1th image, and obtaining a result of the i-1th high frequency fusion; and combining a filtering result of the ith image and a filtering result of the i-1th image according to the result of the i-1th high frequency fusion, and obtaining a result of the i-1th filtering fusion. According to the embodiments of the present disclosure, more details can be retained in the high frequency region of an image, while simultaneously achieving better noise reduction effects in the low frequency region of the image.
Patent WO-2020113693-A1 (WO)
Inventor: HUANG DAQI
IPC: H01F7/18
Filed: 2018-12-20
Abstract: 本发明公开了一种蓄电池式电永磁铁以及其正、反向励磁方法，电永磁铁包括蓄电池、控制器和电永磁铁机体，控制器包括相互并联的励磁电路单元以及与励磁电路单元一一对应串联的续流电路单元，励磁电路单元包括第一开关和第二开关，二者之间连接有电永磁机体中的励磁线圈；第一开关和第二开关均为单刀双掷开关，励磁线圈的两端与二者的动端相连接，二者的两个不动端分别与蓄电池的正极和续流电路单元相连，续流电路单元与电池负极相连。本发明的蓄电池式电永磁铁具有励磁电流大、起重能力大、无需等待续流时间、多通道快速触发和结构简单等优点，本发明提供的上述电永磁铁的正、反向励磁方法具有步骤简单和安全性能高等优点。
Patent WO-2020052151-A1 (WO)
Title: Service node management method, apparatus and device, and computer readable storage medium
Inventor: XU XIN
IPC: H04L29/08
Filed: 2018-12-21
Abstract: A service node management method, apparatus and device, and a computer readable storage medium. The method comprises: reading a plurality of rated parameters of a service node and a parameter coefficient corresponding to each rated parameter, and determining a plurality of performance parameters of the service node and the limit capacity of the service node according to each rated parameter and each parameter coefficient (S10); reading a plurality of real-time parameters of the service node, and determining the real-time capacity of the service node according to each real-time parameter and the performance parameter (S20); and determining the redundancy degree of the service node according to the limit capacity and the real-time capacity, and performing increase and decrease management on the service node according to a relationship between the redundancy degree and a preset threshold interval (S30). According to the method, the increase and decrease management of the service node can be automatically and accurately performed on the basis of the relationship between the redundancy degree that reflects the access traffic currently provided by the service node and the preset threshold interval, so that the process of performing increase and decrease management by manual repeated operations can be avoided, the operation and maintenance costs can be reduced, and the high availability of each service node in a hybrid cloud architecture can be improved.
Patent WO-2019179190-A1 (WO)
Title: 一种自助售货管理系统和方法
Inventor: JI TAO
IPC: G06Q10/06
Filed: 2018-12-24
Abstract: 一种自助售货管理系统和方法，所述自助售货管理系统包括：服务器(101)、总仓管理模块(102)、配送管理模块(103)和至少一个自助售货设备(104)；服务器(101)在自助售货设备(104)的商品库存数据触发预设的商品调拨条件后，发送总仓调拨指令(S310)；总仓管理模块(102)根据服务器(101)发送的总仓调拨指令，对调拨商品进行出库或入库，将对应的调拨商品数据上传至服务器(101)(S320)；配送管理模块(103)根据服务器(101)基于调拨商品数据发送的配送指令进行调拨商品的配送(S330)；自助售货设备(104)将配送员发起的开门请求转发至服务器(101)，接收服务器(101)发送的开门指令后打开柜门；检测到柜门关闭后，进行商品自检以确定更新商品。所述系统能够对自助售货设备(104)的商品调拨进行有效管理，保障自助售货设备(104)的商品的及时配送和更新。
Patent WO-2019129072-A1 (WO)
Title: 分路送风装置及冰箱
Inventor: CHENG XUELI
IPC: F25D17/06
Filed: 2018-12-26
Abstract: 一种分路送风装置及冰箱。其中，分路送风装置（400）包括：壳体（410），其具有周壁部（412），周壁部（412）上设置有多个送风口（411）；多个挡板（420），每个挡板（420）可转动地安装于一个送风口（411）处；多个传动组件，每个传动组件具有转动齿轮（430）和第一传动机构（440）；每个第一传动机构（440）配置成将相应转动齿轮（430）的旋转运动传递至一个挡板（420），以使该挡板（420）静止或转动；和驱动装置，其具有内齿圈（460），每个转动齿轮（430）安装于内齿圈（460）内且与内齿圈（460）啮合，以在内齿圈（460）转动时带动多个转动齿轮（430）转动。可方便对冷风的流路和流量进行统一调节，对冷风进行合理地分配，增强冰箱的保鲜性能和运行效率；且控制简单、调节方便，调节速度快，调节准确率高。
Patent WO-2020143028-A1 (WO)
Title: Method and device for determining an aging behavior of an exhaust gas after treatment system
Inventor: KRUSE MARCEL
IPC: F01N3/10
Filed: 2019-01-11
Abstract: A method for determining an aging behavior of an exhaust gas after treatment system comprises: deriving first data indicative of an efficiency change of the exhaust gas after treatment system for each predetermined mileage interval based on one or more second parameter values (S2) within each of a plurality of predetermined mileage intervals, the one or more second parameter values (S2) within each predetermined mileage interval being one or more first parameter values (S1) within the predetermined mileage interval or derived from the first parameter values (S1) within at least the predetermined mileage interval, each first parameter values (S1) within each predetermined mileage interval indicative of the efficiency of the exhaust gas after treatment system at a corresponding mileage during the predetermined mileage interval; and determining second data indicative of the aging behavior of the exhaust gas after treatment system based on the derived first data for each predetermined mileage interval. By doing so, the aging of the exhaust gas after treatment system may be predicted.
Patent WO-2020103324-A1 (WO)
Inventor: ZENG QINGHAO
IPC: G01N21/88
Filed: 2019-01-11
Abstract: 一种口罩在线检测系统，包括：机柜(5)；输送机构(1)，带动待检测口罩移动；翻转机构(3)，将待检测口罩翻转180°；图像采集机构(2)，采集待检测口罩的正面图像和反面图像；图像处理软件(6)，对正面图像和反面图像与预设的口罩标准进行对比，以将待检测口罩判断为良品或不良品；分选机构(4)，将不良品和良品区分收集；PLC控制系统(7)，分别与输送机构(1)、翻转机构(3)、图像采集机构(2)、图像处理软件(6)和分选机构(4)电性连接。该在线检测系统自动化程度高、检测效率高、口罩质量有保障和成本低的优点。
Patent WO-2020133634-A1 (WO)
Inventor: ZENG DEKANG
IPC: H02H3/08
Filed: 2019-01-29
Abstract: 一种过流保护方法、过流保护电路和显示装置，其中过流保护方法包括：将过流保护值设置为当前时钟信号支路的过流保护阈值（S12）；启用过流保护阈值，控制关闭电平转移电路（S13）；检测第一基板行驱动电路当前时钟信号支路的实时电流（S14）；将实时电流跟过流保护阈值进行对比，当实时电流大于或等于过流保护阈值时，关断第一基板行驱动电路当前时钟信号支路的电源，启动过流保护（S15）。该过流保护方法可以使得显示面板内的各路电路提前得到过流保护，避免出现短路的情况。
Patent WO-2019166003-A1 (WO)
Inventor: DAI GUIFU
IPC: C07D307/58
Filed: 2019-03-01
Abstract: The present invention belongs to the technical field of medicine, and discloses use of 14-deoxy-11,12-dehydro-8,12-epoxy-andrographolide and derivatives thereof and 14-deoxy-11,12-dehydro-7,8-ene andrographolide and 15-substituted derivatives thereof in the preparation of medicaments for preventing and treating diseases having fibrotic pathological processes. It has been proved by experiments that such compounds significantly inhibit the migration and activation of hepatic stellate cells, significantly inhibit TGF-β1-induced mesenchymal transition in human alveolar type II epithelial cells A549; significantly inhibit TGF-β1-induced mesenchymal transition in epithelial cells HK-2 in human renal cortex proximal convoluted tubules; and inhibit angiotensin II (AngII)-induced migration of primary human cardiac fibroblasts HCFB. In a mouse common bile duct ligation model, a silica-induced mouse pulmonary fibrosis model and a mouse unilateral ureteral ligation model, the compounds in this study all exhibit good anti-fibrotic activities in vivo. Such compounds are used as active ingredients in the preparation of anti-fibrotic medicaments, and have high efficiency and low toxicity, thus having good prospects for being developed into medicaments resistant to multiple fibrosis.
Patent WO-2019237777-A1 (WO)
Title: Comb capable of reducing wound hair
Inventor: LIU SHUNDI
IPC: A45D24/04
Filed: 2019-03-12
Abstract: A comb capable of reducing wound hair, comprising a comb body (1), a comb handle (2) supporting the comb body (1), and a plurality of evenly arranged comb teeth (3) that are disposed on the front surface of the comb body (1). The root portion of each comb tooth (3) is fixedly connected to the comb body (1); the top end of each comb tooth (3) is used for contact with the scalp; all the comb teeth (3) are bent in the same direction; the curved line formed between the top end and the root portion of each comb tooth (3) is a slanted arc. The structure of the comb tooth (3) and mounting mode the comb body (1) are changed, so that the fallen hair hooked by the top ends of the comb teeth (3) is hard to pass through the curved surface to wind the root portions of the comb teeth (3), but is kept at the position between the middle portion and the top end of the comb teeth (3), so as to reduce the amount of hair winding the root portions of the comb teeth (3) and facilitate the cleaning of the fallen hair from the comb teeth (3), thereby improving the cleaning efficiency.
Patent WO-2019184744-A1 (WO)
Inventor: WU YONGYONG
IPC: C07D401/14
Filed: 2019-03-18
Abstract: L'invention concerne un dérivé de tétrahydro-isoquinoline, son procédé de préparation et ses applications et, plus particulièrement, un dérivé de tétrahydro-isoquinoline ou son sel pharmaceutiquement acceptable, son ester, son stéréo-isomère, son tautomère, son polymorphe, son solvate, son composé traceur isotopique, son métabolite ou son promédicament. L'invention concerne aussi son procédé de préparation, son intermédiaire, sa composition pharmaceutique le contenant, et ses applications dans le traitement ou la prévention de troubles thrombo-emboliques.
Patent WO-2019201237-A1 (WO)
Inventor: HUANG KAI
IPC: H04M1/02
Filed: 2019-04-16
Abstract: 本公开实施例提供了一种移动终端，包括：盖板、壳体、显示屏、主板、出音孔、受话器和导音件，所述出音孔位于所述盖板与所述壳体之间，所述导音件固定在所述容纳空间内，所述导音件与所述壳体之间设置有导音通道，所述受话器的出音侧朝向所述壳体，所述受话器的出音侧通过所述导音通道与所述出音孔连通。
Patent WO-2019206201-A1 (WO)
Inventor: YU XIAOBO
IPC: H04L29/08
Filed: 2019-04-25
Abstract: 本申请实施例公开了一种配置文件传输方法及相关设备和存储介质，保证了终端能将配置文件下载到对应的OS上，提升了终端下载配置文件的准确性。本申请实施例方法包括：当终端运行于第一操作系统OS时，所述终端获取第二OS标识，所述第二OS标识与第二配置文件匹配；所述终端根据所述第二OS标识切换到所述第二OS；所述终端发送目标消息至所述服务器，所述目标消息用于请求所述第二配置文件；所述终端从所述服务器获取所述第二配置文件。
Patent WO-2019206212-A1 (WO)
Title: Terminal display assembly and mobile terminal
Inventor: CHENG JIAO
IPC: H04M1/02
Filed: 2019-04-25
Abstract: A terminal display assembly (200) may include a display screen (22), a light-transmission cover plate (21) and a seal ring (27). The display screen (22) may define a through hole (221) penetrating the display screen (22) in a thickness direction of the display screen (22). The light-transmission cover plate (21) may be disposed on the display screen (22) and cover the through hole (221). The seal ring (27) may be disposed on the light-transmission cover plate (21) and located in the through hole (221). Display areas of the terminal display assembly (200) can be increased.
Patent WO-2020206812-A1 (WO)
Inventor: LIU MINGGANG
IPC: H01L27/15
Filed: 2019-05-17
Abstract: 一种Micro LED器件及显示面板，Micro LED器件包括：第一电极层（203），设置在沉积有缓冲层（202）的衬底（201）表面，第一电极层（203）表面覆盖有有源层（204）；第二电极层（205），表面设置有第三电极层（206），第二电极层（205）覆盖有源层（204）；第三电极层（206）的每条边与第二电极层（205）对应的边界之间设置有预设距离（207），以增大Micro LED器件中的电流密度。
Patent WO-2020232669-A1 (WO)
Inventor: ZHANG ZHIPENG
IPC: A63H17/26
Filed: 2019-05-22
Abstract: 一种打击检测方法、设备、可移动平台及计算机可读存储介质，该打击检测设备用于固定安装在被测物体内侧，打击检测设备的上盖设置有环形凸起，环形凸起用于与被测物体形成腔体；该方法包括：通过设置于打击检测设备内的麦克风获取声音信号（101）；通过预设的打击检测算法对声音信号进行检测，确定被测物体是否受到打击（102）。通过在打击检测设备上设置环形凸起，从而环形凸起能够与被测物体之间形成腔体，能够提高麦克风获取的声音信号的信号质量，进而能够提高打击检测精准度。
Patent WO-2020078005-A1 (WO)
Title: Maintenance method and maintenance device for printer
Inventor: TANG ZHENHUA
IPC: B28B11/00
Filed: 2019-05-28
Abstract: A printer maintenance method, applied to a printing module (100) of a printer. The printing module comprises a printing spray head unit, a spray cart, and a circuit board; when the printing module needs maintenance, the printing module is laterally translated from a work space (P1) to a maintenance space (P2); and one maintenance space may receive one printing module or one printing spray head unit. The present invention also discloses a printer maintenance device provided next to a printer rack, and comprising a maintenance module (700) used for cleaning and moisturizing the printing module and a maintenance support (500) used for supporting the maintenance module. According to the printer maintenance method and the printer maintenance device, the whole printing line total length can be reduced by 30-45%, so the whole printer can adapt to a place that is not limited by width but limited by length, thus improving the applicability of the printer, and finishing a series of maintenance for the printing module such as cleaning and moisture retaining of the printing spray head, and repairing and replacing of the spray cart and the circuit board.
Patent WO-2020140378-A1 (WO)
Title: Method for post-compensation of motion error of rotating accelerometer gravity gradiometer
Inventor: CAI TIJING
IPC: G01V7/00
Filed: 2019-05-30
Abstract: Provided is a method for post-compensation of the motion error of a rotating accelerometer gravity gradiometer: in gravity gradient exploration on a moving base, recording the angular motion and linear motion of a gravity gradiometer; after exploration ends, on the basis of an analytical model of the rotating accelerometer gravity gradiometer, removing the angular motion and linear motion errors from the output data of the gravity gradiometer; using a post-event motion error compensation method, while ensuring that the accuracy of the gravity gradiometer is unchanged, greatly reducing the accuracy requirements of the gravity gradiometer with respect to an online error compensation system, thereby simplifying the circuit and mechanical design of the rotary accelerometer gravity gradiometer and making the rotating accelerometer gravity gradiometer simpler and lower-cost.
Patent WO-2020113926-A1 (WO)
Inventor: XIA YONGMEI
IPC: C07H15/256
Filed: 2019-06-12
Abstract: The present invention relates to the field of modification and extraction of natural compounds. Disclosed is a method for realizing a high value for a stevioside mother liquor sugar. According to the present invention, lactase is used to catalyze the hydrolysis of stevioside with high specificity so as to transform stevioside into sweet tea glucoside which can usually be only obtained from sweet tea leaves. Meanwhile, the stevioside in the mother liquor sugar is transformed, the polarity difference between the sweet tea glucoside and rebaudioside A is far more than that of stevioside and the rebaudioside A; therefore, it is easier to separate the rebaudioside A from the mother liquor sugar. The technology provided by the present invention is also applicable for the high value of the mixed steviol glycoside containing stevioside, and helps separating the rebaudioside A therefrom.
Patent WO-2019238081-A1 (WO)
Inventor: Mao jing yu
IPC: B01D61/00
Filed: 2019-06-13
Abstract: 一种离子渗透调节方法和装置，包括：a）使用带离子溶质的溶液（13）作为渗透的参与者；b）在溶液（13）和半透膜（4）所在的部分区域或全部区域布置电场或布置磁场（17）或布置电场和磁场（17）。
Patent WO-2019242643-A1 (WO)
Title: 拼接显示装置及其配置方法、显示服务器及其控制方法
Inventor: WANG JIANTING
IPC: G06F3/14
Filed: 2019-06-19
Abstract: 本公开提供一种拼接显示装置及其配置方法、显示服务器及其控制方法。所述配置方法可应用于拼接显示装置，所述拼接显示装置包括拼接成阵列的多个显示器。所述配置方法包括以下步骤：接收显示服务器以预设协议格式发送的显示控制信息，所述显示控制信息至少包括位置设定信息；以及根据所述显示控制信息，对所述多个显示器进行配置。
Patent WO-2020133987-A1 (WO)
Title: Procédé et système de commande de maintien de voie de véhicule
Inventor: ZHOU PEIYI
IPC: B60W30/12
Filed: 2019-06-28
Abstract: La présente invention concerne un procédé et système de commande de maintien d'une voie de véhicule Le procédé consiste : à détecter et identifier un type de ligne de voie dans la vidéo de l'environnement à l'avant du véhicule ; à déterminer un coefficient de réglage correspondant selon le type de ligne de voie ; à déterminer la distance d'intervention actuelle pour le véhicule selon le temps d'étalonnage du véhicule, la vitesse latérale du véhicule, la valeur de décalage d'étalonnage du véhicule et le coefficient de réglage ; et lorsque la distance d'intervention est inférieure à un seuil de distance prédéfini, à émettre une requête d'intervention de direction au véhicule de façon à maintenir le véhicule en circulation dans une voie définie par une ligne de voie.
Patent WO-2020258208-A1 (WO)
Inventor: WANG SHUHONG
IPC: G01N3/24
Filed: 2019-06-28
Abstract: Geomaterial interface shear testing equipment and method. The equipment comprises an air compressor (1), a load controller (2), a water pump (3), a confining pressure controller (4), a data collector (5), a computer (6), and a test sample interface shearing mechanism (7). The test sample interface shearing mechanism (7) comprises a load balancing frame (8), a cylinder (9), and a pressure chamber (10). The air compressor (1) and the cylinder (9) collaboratively output a load force. The water pump (3) and the pressure chamber (10) collaboratively output a confining pressure. A displacement sensor (16) is provided between a cylinder piston rod (11) and a pressure chamber sealing cover (12). The method is: preparing test samples (17), the test samples (17) being semi-cylindrical, and two of the test samples (17) being fitted to form a full cylinder; readying indenters, one end of the indenters being a semicircular stepped surface; arranging the test samples (17) in a fitted state aligned between upper and lower indenters, filling gaps on the stepped surface with a compressible pads, two gaps differ from each other by a 180° phase angle; wrapping a rubber film (22) on the exterior of the indenters and the test samples (17), the rubber film (22) being sealed on either end with rubber bands (23), and completing the assembly of a test sample sealing assembly (24); sealing the assembly (24) within the pressure chamber (10), and applying the confining pressure then applying the load force, thus completing an interface shear test.
Patent WO-2021000248-A1 (WO)
Title: Method and apparatus for continuous synthesis of cyclopropane compounds
Inventor: HONG HAO
IPC: C07C245/16
Filed: 2019-07-02
Abstract: Disclosed in the present invention are a method and an apparatus for continuous synthesis of cyclopropane compounds. The method comprises the following steps: the synthesis reaction of a diazomethane precursor is carried out continuously in a first reactor; the reaction product in the first reactor flows into a separator to perform stratification; the organic phase obtained by stratification overflows into a second reactor; in the second reactor, the diazomethane precursor is continuously consumed to prepare diazomethane, and an electron-rich monoolefin cyclopropanation reaction is performed in situ to obtain cyclopropane compounds. By applying the technical solution of the present invention, automatic control can be achieved, the transfer of high-risk materials can be reduced, and the risk of pipeline transfer of diazomethane solution can be prevented, so that production safety is effectively improved. Moreover, the apparatus is simple, so that the investment in the apparatus is reduced. The production of diazomethane and the cyclopropanation of olefins can be safely and quantitatively implemented simultaneously.
Patent WO-2020029843-A1 (WO)
Title: Lan service control method and communication device
Inventor: KE XIAOWAN
IPC: H04L29/08
Filed: 2019-07-31
Abstract: Provided are an LAN service control method and a communication device. The LAN service control method comprises: sending LAN service related information, wherein the LAN service related information comprises at least one of the following: LAN service capability information of a terminal, position information of the terminal, LAN service subscription information and LAN service request information.
Patent WO-2021026684-A1 (WO)
Inventor: GE CONG
IPC: G02F1/1333
Filed: 2019-08-09
Abstract: A fingerprint recognition module (3), an in-screen optical fingerprint system, and an electronic device. The fingerprint recognition module (3) is disposed under a display panel (1), and comprises an optical lens group (8), a reflector (9), and a fingerprint recognition chip (10). A reflection surface of the reflector (9) faces an outer side of the display panel (1), and at least a part of the reflection surface of the reflector (9) faces a sensing surface (101) of the fingerprint recognition chip (10). The optical lens group (8) is used to converge light beams reflected by a finger (5) on a surface of the display panel (1) and to form an image on the sensing surface (101). The optical lens group (8) comprises at least one lens (82-83), and the optical axis (O1, O4) of the at least one lens (82-83) on an object side surface and/or the optical axis (O2, O4) of the at least one lens (82-83) on an image side surface have an included angle (θ1, θ3) of less than 90 degrees with respect to a horizontal direction. The invention improves the accuracy of fingerprint recognition.