baber/WOPTO huggingface dataset:
Patent WO-2022041121-A1 (WO)
Inventor: HUANG MIN
IPC: H04W4/70
Filed: 2020-08-28
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a base station, a first message that indicates a preferred beam and a multicast session. The UE may receive, from the base station, a second message that indicates an association between a wakeup signal (WUS) and the multicast session, and a set of beams for receiving the WUS, the set of beams including the preferred beam. The UE may receive, from the base station and based at least in part on the second message, the WUS for the multicast session using a beam from the set of beams. Numerous other aspects are provided.
Patent WO-2022047693-A1 (WO)
Title: Paging multiple devices using a common paging occasion
Inventor: ZHANG JUAN
IPC: H04W68/02
Filed: 2020-09-03
Abstract: Aspects of the disclosure relate to paging multiple subscription devices during a common paging occasion. In an aspect, a core network device may perform a first network registration with a first wireless device using a first subscription, wherein performing the first network registration includes associating a paging reference identifier with the first subscription. The core network device perform a second network registration with a second wireless device using a second subscription, wherein performing the second network registration includes associating the paging reference identifier further with the second subscription. The core network device may further request a base station to page the first wireless device and the second wireless device during a paging occasion based on the paging reference identifier.
Patent WO-2022051987-A1 (WO)
Inventor: GONG MAO
IPC: F01K25/10
Filed: 2020-09-10
Abstract: A system for comprehensive utilization of wind power and solar energy in a coastal area. A power output end of a windmill is connected to a windmill directly-connected air compressor; an output end of a photovoltaic panel is connected to an electric air compressor; gas output ends of the windmill directly-connected air compressor and the electric air compressor are connected to a deep-sea compressed air bag; a gas output end of the deep-sea compressed air bag is connected to a compressed air expander; a power output end of the compressed air expander is connected to a generator; a liquid output end of a liquefied gas station is connected to a liquefied gas gasification expander; a power output end of the liquefied gas gasification expander is connected to the generator; heat energy output ends of the windmill directly-connected air compressor and the electric air compressor are connected to a heat exchange hot pool; a heat energy output end of the heat exchange hot pool is connected to a low boiling point working fluid steam turbine; a power output end of the low boiling point working fluid steam turbine is connected to the generator. Most energy in the entire system comes from solar energy and wind power; heat energy and cold energy during conversion are recycled, thereby achieving energy saving and environmental protection.
Patent WO-2021063170-A1 (WO)
Title: 一种基于球冠函数的双轴旋转系统指向误差的修正方法
Inventor: ZHENG YI
IPC: G06F17/15
Filed: 2020-09-14
Abstract: 一种基于球冠函数的双轴旋转系统指向误差的修正方法，包括：误差采集：在星表中选取全天均匀分布的恒星或射电源进行跟踪观测，得到恒星的理论位置和测量位置，将测量位置和理论位置相减，得到误差分布；误差模型拟合：将得到的误差分布，选择合适的正交球冠函数模型，进行拟合，计算出误差拟合系数；其中，正交球冠函数模型包括半球谐函数HSH、Zernike球冠函数ZSF和纵向球冠函数LSF；误差控制补偿：把误差模型和相关的拟合系数，放入指向控制系统，进行补偿。采用基于球冠函数的双轴旋转系统指向误差的修正方法，模型稳定性强，不易受到测量噪声的影响；不需要需根据望远镜的机架形式，确定模型的形式，修正精度高。
Patent WO-2022000798-A1 (WO)
Inventor: HUANG JIANLONG
IPC: G02F1/1335
Filed: 2020-09-15
Abstract: A display device (10) and a preparation method therefor. The display device (10) comprises a substrate (100), a light shielding layer (200), and a color film layer (300); an upper surface (101) of the substrate (100) has a concave-convex structure (110); the light shielding layer (200) is provided on the substrate (100); and the color film layer (300) is provided on the light shielding layer (200). The concave-convex structure (110) is provided on the substrate (100), so that the area of contact between the light shielding layer (200) and the substrate (100) is increased, the wettability between the light shielding layer (200) and the substrate (100) is improved, and stripping of the light shielding layer (200) is avoided, thus the performance of the display device (10) is improved.
Patent WO-2022056707-A1 (WO)
Inventor: WU YEDAN
IPC: H04W36/00
Filed: 2020-09-16
Abstract: La présente invention concerne un procédé de sélection de réseau et de communication et un appareil de communication. Le procédé de sélection de réseau comprend : un dispositif terminal déterminant, selon un premier résultat de détermination, qu'un type de réseau candidat comprend un réseau non terrestre (NTN) et/ou un réseau terrestre (TN), le premier résultat de détermination comprenant au moins un des résultats de détermination suivants : si le dispositif terminal est dans un premier mode, si le dispositif terminal a une capacité d'accès au NTN, et si le dispositif terminal est autorisé à accéder au NTN, le type de réseau candidat étant utilisé pour que le dispositif terminal sélectionne un réseau de service, et dans le premier mode, le dispositif terminal sélectionnant un réseau de service selon un premier type de réseau, le premier type de réseau comprenant au moins l'un des éléments suivants : le NTN et le TN ; et le dispositif terminal sélectionne, selon le type de réseau candidat, un réseau de service sur lequel camper ou auquel accéder. Au moyen du procédé fourni dans des modes de réalisation de la présente invention, le dispositif terminal peut choisir de manière autonome d'accéder au NTN ou au TN.
Patent WO-2021103772-A1 (WO)
Title: 数据传输方法和装置
Inventor: OU DUANHAO
IPC: H04W12/12
Filed: 2020-09-21
Abstract: 本申请实施例提供一种数据传输方法和装置，所述方法包括：核心网设备可以向基站发送基站公钥对应的基站私钥，基站在向UE发送广播消息时，通过基站私钥签名得到签名信息，将签名信息和基站公钥携带在广播消息中发送给UE。通过在广播消息中携带使用基站私钥签名的签名信息和基站公钥，使得UE根据该签名信息和基站公钥能够验证消息是否来自合法基站，从而拒绝伪基站的操作，将基站公钥携带在广播消息中发送给UE，能够避免伪基站故意发送海量垃圾公钥耗尽UE的存储资源，导致UE不可用。
Patent WO-2021139219-A1 (WO)
Title: Electric connection socket, optical module, and optical module cage
Inventor: SHU LIANG
IPC: H01R13/502
Filed: 2020-09-24
Abstract: An electric connection socket (300), an optical module (600), and an optical module cage (500). The electric connection socket comprises: an insulating base, the base comprising an upper surface (311), a lower surface (312), and a first side surface (313) connected to the upper surface and the lower surface, an electric signal slot (314) being formed on the first side surface, and the electric signal slot being used for coupling with an electric signal terminal (134) of the optical module; and at least two first pins (315), one ends of the at least two first pins being located on the upper surface, the other ends thereof extending from the interior of the base to the lower surface, and the at least two first pins being used for coupling to an electronic device. The electric connection socket can be applied to various interface modules comprising the optical module and an electric port module, and is configured to support an interface module to supply power to the electronic device by using an Ethernet power supply technology while maintaining an original signal transmission function, so that the electronic device does not need to be additionally provided with a POE interface and then the size of the electronic device is reduced.
Patent WO-2021218069-A1 (WO)
Inventor: LUO JINXIONG
IPC: G06F16/33
Filed: 2020-10-22
Abstract: Disclosed are a dynamic scenario configuration-based interactive processing method and apparatus, and a computer device. The method comprises: if information to be processed is received from a client, acquiring target character information corresponding to the information to be processed (S110); acquiring interactive scenario information corresponding to the information to be processed (S120); acquiring, in a configuration database, pre-stored configuration information matching the interactive scenario information so that same is used as target configuration information (S130); performing class reflection on a pre-stored general framework according to the target configuration information, so as to construct and obtain a corresponding processing instance (S140); and executing the processing instance to process the target character information to acquire interactive information corresponding to the information to be processed, and feeding back the interactive information to the client to complete interactive processing (S150). The method is based on development assistant technology and relates to the technical field of smart cities, and makes it possible to obtain a corresponding processing instance on the basis of dynamic configuration of interactive scenario information so as to complete interactive processing. The method can be applied to any interactive scenario, and has the characteristics of a wide application range and a higher use flexibility while ensuring the efficiency of interactive processing.
Patent WO-2021174870-A1 (WO)
Title: 网络安全风险检测方法、系统、计算机设备和存储介质
Inventor: JIA KAI
IPC: H04L29/06
Filed: 2020-10-22
Abstract: 本申请涉及网络安全领域，提供了一种网络安全风险检测方法，所述方法包括：监听目标SQL语句对目标数据库的操作，并对所述目标SQL语句的操作进行记录，以得到目标SQL日志数据；对目标SQL日志数据进行分析，以判断所述目标SQL日志数据中是否存在风险数据；如果所述目标SQL日志数据中存在所述风险数据，则对风险数据进行漏洞检测，以判断所述风险数据中是否存在漏洞数据；及如果风险数据中存在所述漏洞数据，则根据漏洞数据生成漏洞信息，并将漏洞信息上报到对应的安全运营平台，并将漏洞数据和漏洞信息上传到区块链中。本申请降低了网络安全风险检测的运维成本高，提高了漏洞检测识别的精准率、网络攻击识别精准率以及网络安全风险检测的效率。
Patent WO-2022041438-A1 (WO)
Title: 扬声器箱
Inventor: WU JUN
IPC: H04R1/22
Filed: 2020-10-26
Abstract: 本发明提供一种扬声器箱，其包括具有收容空间的壳体以及部分收容固定于收容空间的发声单体，壳体包括上盖以及盖设于上盖并共同围成收容空间的下盖，发声单体包括用于振动发声的振膜；上盖包括与下盖固定连接的上盖延伸壁、自上盖延伸壁向发声单体弯折延伸的主体部，主体部贯穿设置外漏出振膜的发声口，发声单体设有定位凸台；壳体及定位凸台均为金属材料，发声单体通过定位凸台焊接固定于主体部；下盖位于发声单体远离振膜的一侧并与上盖延伸壁形成密封，上盖、下盖及发声单体共同围成后声腔。与相关技术相比，本发明的扬声器箱后声腔体积大、低频声学性能优。
Patent WO-2022087782-A1 (WO)
Title: Capteur de pression à base de nanofils d'oxyde de zinc et procédé de fabrication pour celui-ci
Inventor: LI LING
IPC: B82Y40/00
Filed: 2020-10-26
Abstract: L'invention concerne un capteur de pression à base de nanofils d'oxyde de zinc et un procédé de fabrication pour celui-ci. Le procédé de fabrication consiste à : fabriquer une électrode inférieure (201) sur un substrat ; fabriquer une couche de germination (202) sur l'électrode inférieure (201) ; fabriquer une couche de nanofils d'oxyde de zinc (203) sur la couche de germination (202) ; fabriquer une couche de support (204) sur la couche de nanofils d'oxyde de zinc (203) ; et fabriquer une électrode supérieure (206) sur la couche de support (204). Le capteur de pression basé sur un transistor en couches minces d'oxyde d'indium-gallium-zinc (IGZO-TFT) et des nanofils (NW) de ZnO fabriqué par le procédé de fabrication accomplit une détection de pression. Pour des capteurs de pression constitués de matériaux piézoélectriques classiques tels que des matériaux céramiques, la température de fabrication est généralement de 1000 K ou supérieure, tandis que le procédé de fabrication accomplit une technologie pour la fabrication du capteur de pression à une basse température.
Patent WO-2021083108-A1 (WO)
Title: File compression method, file decompression method, and electronic device
Inventor: HANG YU
IPC: G06F16/174
Filed: 2020-10-27
Abstract: A file compression method, a file decompression method, and an electronic device. The file compression method comprises: receiving a compression request, the compression request comprising an encryption compression mode for at least part file of a file to be compressed, and when the at least part file is all of the file to be compressed, at least two compression passwords being used in the encryption compression mode (101); and in response to the compression request, generating a compressed file comprising the file to be compressed (102).
Patent WO-2021083130-A1 (WO)
Inventor: TAN JUNWEI
IPC: A24F40/30
Filed: 2020-10-27
Abstract: A cartridge (1) applied to an electronic atomization device (100). The electronic atomization device (100) comprises a liquid heating atomization unit (3), and smoke from the liquid heating atomization unit (3) passes through the cartridge (1); the cartridge (1) comprises a plurality of independent containing units (11a-11e) and solid aerosol-producing substrates; the bottom parts of the containing units (11a-11e) are provided with supporting parts (111a-111e) that have vent holes; and the solid aerosol-producing substrates are arranged in the plurality of containing units (11a-11e); the plurality of containing units (11a-11e) and the solid aerosol-producing substrates contained therein correspondingly form a plurality of sub-airflow channels, and the airflow resistance of the plurality of sub-airflow channels is at least partially different. The application of the cartridge (1) may improve the uniformity of the drag taste of the electronic atomization device (100), and enhance the use experience of a user.
Patent WO-2021159735-A1 (WO)
Inventor: Su Xueqi
IPC: G06N3/04
Filed: 2020-10-28
Abstract: 一种信贷风险评估方法、装置、计算机设备及存储介质，涉及人工智能技术领域，能够提高信贷风险评估的准确率，确保信贷风险评估结果的可靠性。其中方法包括：获取待评估用户对应的消费行为时序数据和属性数据（101）；将所述消费行为时序数据输入至预设消费行为特征提取模型进行特征提取，得到所述消费行为时序数据对应的消费行为特征向量（102）；将所述属性数据输入至预设属性特征提取模型进行特征提取，得到所述待评估用户对应的属性特征向量（103）；根据所述消费行为特征向量和所述属性特征向量，确定所述待评估用户对应的信贷风险评估结果（104）。所述方法采用了机器学习技术，适用于信贷风险的评估。
Patent WO-2022095003-A1 (WO)
Title: Air cooling device for aquatic product processing
Inventor: LIU HAOYUAN
IPC: F26B25/00
Filed: 2020-11-08
Abstract: An air cooling device for aquatic product processing, comprising a base (1). A fixing frame (2) is fixedly connected to the top of the base (1); a feeding box (3) is fixedly connected to the top of the fixing frame (2); a net box (4) is slidably connected in the feeding box (3); a fixing block (5) is fixedly connected to the top of the base (1); a motor (6) is provided at the top of the fixing block (5); a worm (7) is fixedly connected to an output shaft of the motor (6); fan blades (8) are fixedly connected to one end of the worm (7); a fan cover (9) is fixedly connected to the top of the fixing block (5); the fan blades (8) and one end of the worm (7) are provided in the fan cover (9); one side of the fan cover (9) is fixedly connected to an air inlet pipe (10); one end of the air inlet pipe (10) are communicated with the feeding box (3); a mesh baffle (11) is fixedly connected to one end of the air inlet pipe (10); a worm wheel (12) is meshed at one side of the worm (7); a first rotating rod (13) is fixedly connected to the bottom of the worm wheel (12); a first bevel gear (14) and a second bevel gear (15) are fixedly connected to the first rotating rod (13); a third bevel gear (16) is meshed to the first bevel gear (14); a second rotating rod (17) is fixedly connected to one side of the third bevel gear (16); one end of the second rotating rod (17) extends into the feeding box (3), and two cams (18) are fixedly connected to the second rotating rod (17). The two cams (18) are in contact with the bottom of the net box (4); a fourth bevel gear (19) is meshed to the second bevel gear (15); a third rotating rod (20) are fixedly connected to one side of the fourth bevel gear (19); a first gear (21) is fixedly connected to one end of the third rotating rod (20) and a second gear (22) is meshed to the first gear (21); a fourth rotating rod (23) is fixedly connected to an inner ring of the second gear (22); two rotating rods (24) are fixedly connected to two sides of the fourth rotating rod (23); and a same stirring rod (25) is fixedly connected to one end of each of the two rotating rods (24).
Patent WO-2021135658-A1 (WO)
Inventor: HE MINGMING
IPC: G05D1/02
Filed: 2020-11-11
Abstract: 一种自主机器人(100)的地图创建方法、装置、设备及存储介质，自主机器人(100)的地图创建方法包括：获取从目标数据库中选定的初始地图，初始地图包括初始边界(S111)；使自主机器人(100)执行边界探测，以获取实测边界；自主机器人(100)的定位精度满足预设条件(S112)；根据实测边界修正初始边界(S113)。自主机器人(100)的地图创建方法可以提高自主机器人(100)的地图创建精度及地图创建效率。
Patent WO-2022088272-A1 (WO)
Inventor: LIANG CHANGPING
IPC: F16J15/28
Filed: 2020-11-16
Abstract: A sealing device for a variable-working-condition gas-liquid two-phase fluid medium. The sealing device is provided with a rotating shaft (1) and a housing (3), wherein a cavity formed by the housing (3) is used for accommodating the gas-liquid two-phase fluid medium. The sealing device further comprises a labyrinth sealing mechanism and a double-end-face fluid dynamic pressure mechanical sealing mechanism which cooperate with each other, wherein a sealing buffer cavity (14a, 14b) is provided between the labyrinth sealing mechanism and the fluid dynamic pressure mechanical sealing mechanism, and the fluid dynamic pressure mechanical sealing mechanism is provided with a left static ring 5a and a left dynamic ring 6a which abut against each other, and a right static ring 5b and a right dynamic ring 6b which abut against each other. By means of the design of step-shaped trapezoidal convex teeth of a labyrinth sealing channel, the throttling and pressure reducing effects of labyrinth sealing, the attenuation of the sealing buffer cavity (14a, 14b) to medium pressure fluctuation, the structural design of micropore groups in end faces of the static rings (5a, 5b), and the inclined design of sealing end faces of the dynamic rings (6a, 6b) and the limiting effect of a limiting sleeve (7) are utilized to achieve good sealing performance and sealing stability of dynamic pressure sealing of the variable-working-condition gas-liquid two-phase fluid medium.
Patent WO-2022104849-A1 (WO)
Inventor: DING QIJUN
IPC: F26B21/00
Filed: 2020-11-25
Abstract: 本发明涉及纺织布料加工领域，具体是一种用于纺织布料的烘干设备，包括左侧架、右侧架和底座，所述左侧架和右侧架之间跨设安装有转筒，转筒的中部开设有连通通道，转筒的内侧还周向分布安装有多组气动伸缩组件，气动伸缩组件的外端安装固定有弧形板，左侧架上还安装固定有正负压气泵，正负压气泵通过U形连接管与连通通道连通设置，转筒内还周向分布开设有多条烘干通道，转筒上还设有若干与烘干通道连通的烘干气孔，右侧架的右侧安装有用于对转筒罩设的烘干箱体，烘干箱体上还安装有温控风机。本发明能够进行动态调节式烘干作业，提升纺织布料的烘干效果和效率。
Patent WO-2021253738-A1 (WO)
Title: Cavity series for pressing, coating and cleaning, and cleaning method
Inventor: FAN ZHENHUA
IPC: B05C11/10
Filed: 2020-12-02
Abstract: Disclosed are a cavity series for pressing, coating and cleaning, and a cleaning method. The cavity series for pressing, coating and cleaning comprises a plurality of cleaning cavities (1), the plurality of cleaning cavities (1) form a cleaning cavity series, each of the cleaning cavities (1) is provided with an inner cavity body (10), a side part of each of the cleaning cavities (1) is provided with a cleaning cavity opening part (11) in communication with the inner cavity body (10), and cross-section outlines of the inner cavity bodies (10) of the plurality of cleaning cavities (1) are a series of curves with the same chord length. The cleaning method using the cleaning cavity series comprises: S1, evaluating an envelope line (5) of slurry that is overflowing from a lip part of a coating head (4), selecting one cleaning cavity (1) from a cleaning cavity series, and ensuring that the enveloped area of the envelope line (5) accounts for 30%-70% of the sectional area of an inner cavity body (10) of the selected cleaning cavity (1); and S2, by using the cleaning cavity (1) that is selected from the cleaning cavity series, selecting a static cleaning method or a dynamic cleaning method to carry out a cleaning operation of the coating head (4). The cavity series for pressing, coating and cleaning, and the cleaning method using same have the advantages of having a simple structure, being convenient to apply, being low in implementation cost, and improving the cleaning effect, the coating quality and the production efficiency, etc.
Patent WO-2021121050-A1 (WO)
Title: 确定半导体晶圆边缘抛光形状的方法和评估半导体晶圆边缘形状的方法
Inventor: CHEN CHIEN-MING
IPC: H01L21/67
Filed: 2020-12-03
Abstract: 提出了确定半导体晶圆边缘抛光形状的方法和评估半导体晶圆边缘形状的方法，该方法包括：(1)通过激光显微系统，获得半导体晶圆的表面与边缘交界区的高度曲线；(2)根据所述高度曲线，获得所述高度曲线的第一切线和第二切线，其中，所述第一切线穿过所述第一切点，所述第二切线穿过所述第二切点；(3)获得所述高度曲线、所述第一切线和所述第二切线限定出的区域面积At；(4)根据所述第一切点与所述第二切点的连线，获得所述高度曲线到所述连线的最大垂直距离H；(5)根据所述第一切线与所述第二切线的交点，获得第一长度与第二长度之比L1/Lr。
Patent WO-2021243991-A1 (WO)
Inventor: ZHU RUI
IPC: H04N7/015
Filed: 2020-12-03
Abstract: A display control method for an ultra high definition television and a 8K ultra high definition television. Said method comprises: receiving an inputted ultra high definition video signal, and converting the video signal into an RGB signal corresponding to a target resolution (S1); and driving, according to the target resolution corresponding to the RGB signal, a Micro LED display screen to display (S2). When the inputted video signal is a 8K ultra high definition signal, the 8K video signal is converted into an RGB signal, then the RGB signal is transmitted to a drive chip of the Micro LED display screen, and the drive chip lights up the whole Micro LED display screen according to the RGB signal, thereby achieving the display of the ultra high definition television. The Micro LED display screen allows any splicing of resolutions, is compatible with RGB signals of any resolution, implementing display of the RGB signals of any resolution on an ultra high definition display screen, and particularly implementing the ultra high definition display of the ultra high definition video signal on the ultra high definition screen.
Patent WO-2022062203-A1 (WO)
Title: Véhicule aérien sans pilote multirotor
Inventor: LIU XIANG
IPC: B64C27/08
Filed: 2020-12-10
Abstract: L'invention concerne un véhicule aérien sans pilote multirotor, comprenant un corps d'engin et une pluralité d'ensembles bras (100). Chaque ensemble bras (100) comprend un bras (20) ; une extrémité du bras (20) est reliée au corps d'engin, et l'autre extrémité du bras (20) sert de support à un ensemble de propulsion du véhicule aérien sans pilote multirotor ; et au moins un ensemble bras (100) comprend en outre un support (10), le support (10) étant relié de manière flexible au bras (20).
Patent WO-2022032950-A1 (WO)
Title: 一种恶意软件的防御方法、防御装置以及防御系统
Inventor: YANG LIDONG
IPC: G06F21/56
Filed: 2020-12-15
Abstract: 一种恶意软件的防御方法、防御装置以及防御系统，用以降低对恶意软件进行防御时的代价和难度，提高对恶意软件防御的有效性。所述防御方法包括：在包括N个原有文件的受保护文件夹中添加M个元素文件，使得当根据文件名对所述受保护文件夹中的所有文件排序时，所述M个元素文件中的一个元素文件排在所述N个原有文件之前，M大于等于1，N大于等于1（300）；监控所述M个元素文件是否被访问（301）；如果所述M个元素文件中的元素文件被访问，终止访问所述元素文件的进程，所述进程被认为与恶意软件相关（302）。
Patent WO-2021135931-A1 (WO)
Title: Method for preparing connection structure of porous surface structure and substrate
Inventor: Yao Jian Qing
IPC: B23K11/11
Filed: 2020-12-15
Abstract: Disclosed is a method for preparing a connection structure of a porous surface structure (21) and a substrate (23). The method comprises: pre-connecting the porous surface structure (21) and an intermediate (22) to form a composite body (2A), wherein the intermediate (22) is positioned between the porous surface structure (21) and the substrate (23), and the intermediate (22) comes into contact with the substrate (23); arranging the substrate (23) and the composite body (2A) between an electrode of a first polarity and an electrode of a second polarity; making the electrode of the first polarity be in conductive contact with the porous surface structure (21) and/or the intermediate (22), and making the substrate (23) be in conductive contact with the electrode of the second polarity to form a current loop; and performing resistance welding on the intermediate (22) and the base (23) to achieve connection between the composite body (2A) and the substrate (23).
Patent WO-2021208510-A1 (WO)
Title: Relay lens structure of laparoscope
Inventor: ZHANG JIANZHONG
IPC: A61B1/313
Filed: 2020-12-29
Abstract: Disclosed is a relay lens structure of a laparoscope, the structure being composed of two completely symmetrical lens groups, the two lens groups being sequentially bonded into a whole in the direction of light, and each lens group comprises a first meniscus lens (1), a second meniscus lens (2) and a rod lens group (3), wherein the concave face of the first meniscus lens (1) and the concave face of the second meniscus lens (2) are arranged opposite each other and bonded into a whole; and the convex face of the second meniscus lens (2) is located on one side of the rod lens group (3).