baber/WOPTO huggingface dataset:
Patent WO-2020243970-A1 (WO)
Title: Method, device and computer readable medium for contention window adjustment
Inventor: LIANG LIN
IPC: H04W72/12
Filed: 2019-06-06
Abstract: Embodiments of the present disclosure relate to method, device and computer readable medium for contention window adjustment. In example embodiments, a method includes selecting, at least from first transmissions in a first time interval, a set of reference transmissions based on occupancy of a set of subbands by the first transmissions, clear channel assessment being performed on the set of subbands. The method further includes determining an unsuccessful reception ratio based on reception states of the set of reference transmissions. The method further includes determining, based on the unsuccessful reception ratio, an adjustment on a contention window for a second transmission in a second time interval after the first time interval.
Patent WO-2020019966-A1 (WO)
Title: Detection method and apparatus, and computing device and storage medium
Inventor: YANG WENXUE
IPC: G06K9/00
Filed: 2019-07-05
Abstract: A detection method and apparatus, and a computing device and a storage medium. The method comprises: acquiring a first picture and a second picture of the same object to be recognized photographed by a photographing terminal once (602); determining attribute information of the object to be recognized in the first picture and the second picture (604); if the attribute information of the object to be recognized in the first picture and the second picture does not satisfy a preset condition, acquiring first position parameters of the first picture and second position parameters of the second picture (606); according to a pre-trained fusion model, acquiring adjustment parameters corresponding to the first picture, the first position parameters, the second picture and the second position parameters (608); and on the basis of the adjustment parameters, instructing the photographing terminal to move and controlling the photographing terminal to continue photographing (610).
Patent WO-2021003627-A1 (WO)
Title: Low-pressure mold-filling method and apparatus using electromagnetic stirring technique
Inventor: YANG LINLONG
IPC: B22D18/04
Filed: 2019-07-05
Abstract: A low-pressure mold-filling method and apparatus, the apparatus comprising a crucible furnace (5) and a riser tube (2). The method comprises: applying pressure to the metal melt in the crucible furnace (5) to enable the metal melt to rise through the riser tube (2) until the whole cavity (1) is completely filled, the temperature of the metal melt passing through the riser tube (2) being 30-60% of the temperature interval width of the liquid phase temperature of the metal or alloy liquid plus the solidifying temperature thereof; and electromagnetically stirring the metal melt when same is flowing through the riser tube (2).
Patent WO-2020020008-A1 (WO)
Inventor: FU AIHUA
IPC: H04L9/32
Filed: 2019-07-15
Abstract: 本发明公开了一种鉴权方法及鉴权系统，所述方法用于实现鉴权中心对鉴权模块请求的鉴权，所述鉴权模块运行在客户端，所述鉴权中心运行在服务端，所述方法包括：所述鉴权中心基于一个或多个鉴权因子生成鉴权标识，所述鉴权因子由鉴权模块发送给鉴权中心或者由鉴权中心生成；所述鉴权中心基于该鉴权标识生成鉴权私钥，并将鉴权标识和鉴权私钥发送给鉴权模块；所述鉴权中心和鉴权模块依据鉴权标识的内容，对鉴权标识进行全部存储、部分存储或全部删除的操作；所述鉴权模块向所述鉴权中心发送鉴权请求，所述鉴权中心对所述鉴权请求进行验证。在易用性不降低的前提下，本发明的鉴权方法和系统达到了更高的安全性，同时效率和成本控制在一个较优的水平。
Patent WO-2020244028-A1 (WO)
Inventor: PAN MINXUE
IPC: G06F9/44
Filed: 2019-07-17
Abstract: Disclosed in the present invention is an interrupt sequence diagram-based method for interrupt-driven system verification, comprising the following steps: Step 1, creating an interrupt-driven system model on the basis of an interrupt sequence diagram; Step 2, according to the interrupt sequence diagram obtained in Step 1, dividing interaction fragments therein into basic interaction and compound interaction fragments; Step 3, converting the basic interaction fragments and the compound interaction fragments in sequence into automata; Step 4, combining the multiple automata obtained in Step 3 into one mixed automaton; Step 5, extracting a constraint of the interrupt sequence diagram, and adding the constraint to the automaton model obtained by conversion; Step 6, extracting verification attribute information from the interrupt sequence diagram, and setting a verification attribute as a constraint added to the automaton model obtained by conversion; Step 7, describing the automaton into an input format which may be received by an automaton verification tool; Step 8, using the automaton verification tool to perform verification.
Patent WO-2020119125-A1 (WO)
Inventor: LI ZHE
IPC: B60L3/00
Filed: 2019-07-23
Abstract: 一种机车高压系统冗余控制方法及系统，该方法包括：获取受电弓故障信息和/或真空主断路器故障信息；根据受电弓故障信息和/或所述真空主断路器故障信息，对高压转换接触器进行转换操作，使未发生故障的受电弓和/或真空主断路器投入工作，与变压器一起形成高压电流通路，避免了每台机车有且只有一个真空主断路器，当真空主断路器故障时，则无法形成高压电流通路，造成机车击破的问题。若获取到受电弓故障信息，则根据受电弓故障信息，对所述网压转换继电器进行切换操作，使得正常工作的受电弓、电压互感器和网压转换继电器在未发生故障的受电弓一侧的触点闭合形成电流通路，能够正常获取网压信息。
Patent WO-2020042836-A1 (WO)
Inventor: WAN XUYANG
IPC: G06Q20/32
Filed: 2019-07-24
Abstract: Provided by the embodiments of the present invention are a device which may pay a transportation fee, and a combination device, system and method, the device which may pay a transportation fee comprising a recharge module and a transportation fee payment module; the transportation fee payment module is used to store transportation fee funds of a user, and when carrying out near-field communication with a transportation fee-collecting terminal, carries out a transportation fee deduction operation for the user with the transportation fee-collecting terminal, and records the transportation fee funds after deducting a transportation fee; the recharge module is used to carry out near-field communication with the transportation fee payment module so as to read the transportation fee funds recorded thereby, and send a recharge request to a transaction server when the transportation fee funds are less than a set threshold.
Patent WO-2021016737-A1 (WO)
Inventor: HONG JIANRONG
IPC: B65G47/24
Filed: 2019-07-26
Abstract: 一种分拣输送系统，包括分拣输送带装置（100）、设于分拣输送带装置（100）一端的过渡输送带装置（200）和设于分拣输送带装置（100）一侧的导送装置（700），分拣输送带装置（100）的侧部设有至少一个朝向导送装置（700）设置的侧部下料口（1112），每个侧部下料口（1112）处都可转动安装有至少一个导向滚筒（140），分拣输送系统还包括与至少一个导向滚筒（140）传动连接以用于驱动至少一个导向滚筒（140）转动以用于辅助驱动货物从侧部下料口（1112）输送到导送装置（700）上的第一动力机构（150）。该分拣输送系统中第一动力机构（150）驱动导向滚筒（140）转动可提供货物从侧部下料口（1112）输送到导送装置（700）上的辅助动力，避免了由于货物分拣输送动力不足而导致货物卡在侧部下料口（1112）处、无法从侧部下料口（1112）处正常输出的不良现象发生。
Patent WO-2020147295-A1 (WO)
Title: 一种Se掺杂MXene电池负极材料及其制备方法和应用
Inventor: ZHANG YELONG
IPC: H01M4/58
Filed: 2019-07-30
Abstract: 一种Se掺杂MXene电池负极材料及其制备方法，包括以下步骤：(1)将MXene和有机Se源按照质量比为1∶1～5分别放置于石英舟的两端；(2)将石英舟放于管式炉中，其中，将有机Se源放置于管式炉的上游，通入保护气体，以4～6℃/min的升温速度加热至300-1100℃，反应时间为2-10h，保温2-6h，然后自然冷却到室温；(3)将步骤(2)所制样品用清洗剂进行洗涤后离心，真空干燥10-24h，得到所述Se掺杂MXene电池负极材料。制备得到的钾离子电池负极，不但具有良好的导电性能，还具有较高的比容量及稳定的充放电循环特性。
Patent WO-2020258450-A1 (WO)
Title: 显示面板
Inventor: NIE XIAOHUI
IPC: G02F1/1333
Filed: 2019-08-06
Abstract: 本发明公开了一种显示面板，所述显示面板包括触控电极区；所述触控电极区包括：第一触控线层；与所述第一触控线层对应设置的第二触控线层；其中，所述第一触控线层与所述第二触控线层电性连接，且所述第一触控线层与所述第二触控线层在垂直于显示面板方向上的投影完全重合。
Patent WO-2020063144-A1 (WO)
Title: 一种柔性直流电网的能源外送能力评估方法及系统
Inventor: YANG XIAONAN
IPC: H02J5/00
Filed: 2019-08-12
Abstract: 本文提供了一种柔性直流电网的能源外送能力评估方法及系统，所述方法包括：将预先建立的交直流混合系统划分为供电区域和受电区域；基于所述受电区域的消纳极限，定义所述供电区域的约束条件和目标函数，构建风光抽联合运行优化模型；所述风光抽联合运行优化模型包括所述供电区域的约束条件和目标函数；采用内点法求解风光抽联合运行优化模型，获得供电区域最大外送电量。
Patent WO-2020063219-A1 (WO)
Inventor: LI DONGSHENG
IPC: H04N5/265
Filed: 2019-08-23
Abstract: Provided are a video data anti-forgery method and system, and a terminal. The video data anti-forgery method comprises: a terminal acquiring infrared camera data and visible light camera data, performing synthesis processing on the infrared camera data and the visible light data to obtain video data, and at least sending the video data to a background system server, wherein the infrared camera data comprises an infrared light change feature, and the infrared light change feature is a video feature obtained after an infrared light-supplementing apparatus obtains a first light ray change rule and supplements light according to the first light ray change rule; and the background system server receiving the video data, extracting the infrared light change feature in the video data and determining whether the infrared light change feature complies with a second light ray change rule, and if so, the video data being real, wherein the second light ray change rule matches the first light ray change rule.
Patent WO-2020073748-A1 (WO)
Inventor: ZHANG YI
IPC: C12Q1/68
Filed: 2019-08-26
Abstract: Disclosed are a method and kit for constructing a second generation high-throughput sequencing library, wherein same can improve the utilization efficiency of the nucleic acid template and simplify the construction process of the sequencing library to make the sequencing results more accurate and the coverage more uniform.
Patent WO-2020155616-A1 (WO)
Inventor: LI THOMAS
IPC: G01C21/16
Filed: 2019-08-29
Abstract: 一种基于数字视网膜的拍摄装置的定位方法，单独利用拍摄装置所拍摄的图像或将图像与多传感器(IMU、激光雷达、高度计等)数据相融合得到运动位姿数据，通过对位姿数据进行处理，得到视频图像的相对位姿数据，然后将相对位姿数据与对应的图像和图像特征一起编码上传到云端，在云端解码得到相对位姿数据，基于相对位姿数据推算所需视频图像的地理位置信息。
Patent WO-2020237881-A1 (WO)
Inventor: XIAO YUBIN
IPC: G06T1/00
Filed: 2019-08-29
Abstract: A method for injecting anti-counterfeit information, comprising: according to a preset QR code rule, generating anti-counterfeit information into a QR code (S1); acquiring an array corresponding to the QR code, the array being composed by arranging a plurality of digits (S2); sequentially hiding each digit in a preset image according to a preset rule (S3); and displaying the preset image carrying the anti-counterfeit information (S4). In the described method, by means of generating anti-counterfeit information into a QR code and hiding same in a preset image, the anti-counterfeit information is hidden and protected.
Patent WO-2020088080-A1 (WO)
Inventor: SHI ZHENYU
IPC: H04W28/02
Filed: 2019-08-30
Abstract: La présente invention concerne un procédé permettant de transmettre un signal de référence, comprenant les étapes suivantes : une séquence de signaux de référence de positionnement (PRS) est générée; la séquence PRS est mappée sur des symboles cibles dans un intervalle de temps cible, les symboles cibles comprenant plusieurs symboles successifs suivant un symbole transportant un signal de commande dans l'intervalle de temps cible, et la longueur de la séquence PRS étant N_RE×N^DL_RB, N^DL_RB étant le nombre total de blocs de ressources (RB) attribués pour une transmission en liaison descendante, et N RE  étant le nombre d'éléments de ressource cibles transportant un PRS sur un symbole cible dans chaque RB; et la séquence PRS étant envoyée à un équipement utilisateur sur les RE cibles. Au moyen du procédé de transmission d'un signal de référence fourni dans la présente invention, une utilisation efficace des ressources de transmission et un positionnement plus précis peuvent être obtenus.
Patent WO-2020011280-A1 (WO)
Title: Dual shaft pivot apparatus of frame assembly for stabilizer, frame assembly, and stabilizer
Inventor: LIAO YILUN
IPC: F16M13/04
Filed: 2019-09-03
Abstract: A dual shaft pivot apparatus (4) of a frame assembly (100) for a stabilizer (101) that can be used for pivotably connecting a first part (2) and a second part (3) of the frame assembly (100), and comprises: a first rotation shaft (42) fixedly connected to the first part (2); a pivot seat (43), one end of the pivot seat (43) being rotatably supported on the first rotation shaft (42) and being able to pivot relative to the first part (2) around the first rotation shaft (42) along a first rotation axis (A1); a pivot body (44) fixedly connected to the second part (3), said pivot body (44) being supported on the other end of the pivot seat (43) and being able to pivot around a second rotation axis (A2), the second rotation axis (A2) being orthogonal to the first rotation axis (A1). The frame assembly (100) for the stabilizer (101) satisfies human factors and ergonomics, and enables various operation orientations.
Patent WO-2020220561-A1 (WO)
Title: Downlink channel indication method and device
Inventor: LIU XIAOFENG
IPC: H04W72/04
Filed: 2019-09-15
Abstract: Disclosed in the present application are a downlink channel indication method and device, the method comprising the following steps: monitoring the frequency bands on the carriers of an unlicensed frequency band; on the basis of the monitoring result, selecting a target carrier and a target frequency band for sending a PDCCH or a PDSCH; and sending indication information used for identifying the target carrier or the target frequency band. The present application also comprises a network device and system using said method. The solution of the present application solves the problems of system resource wastage and low working efficiency.
Patent WO-2021046927-A1 (WO)
Title: Nickel-rhenium alloy rotary tubular target material containing trace rare earth elements and preparation method therefor
Inventor: WU YUNING
IPC: C22F1/10
Filed: 2019-09-26
Abstract: Disclosed is a nickel-rhenium alloy rotary tubular target material containing trace rare earth elements, comprising the following components in mass percentages: 2-5% of Re, 0.02-0.1% of Zr, 0.05-0.1% of B, 0.01-0.05% of Mg, and the balance being Ni and inevitable impurities. Further disclosed is a method for preparing the nickel-rhenium alloy rotary tubular target material containing trace rare earth elements, comprising the steps of vacuum melting, atomizing and ingot casting, sintering, hot isostatic pressing, hot forging, hot rolling, cross piercing, annealing, and machining.
Patent WO-2021056554-A1 (WO)
Inventor: DUAN FANGQING
IPC: H01Q3/32
Filed: 2019-09-29
Abstract: Embodiments of the present application relate to the technical field of communication devices, and provide an adjusting apparatus, a multiband antenna, and a base station. The adjusting apparatus comprises: a driving unit; a plurality of adjusting rods, which are adapted to be connected to a plurality of loads in a one-to-one mode, the plurality of adjusting rods being divided into a first adjusting rod group and a second adjusting rod group which are arranged in an up-down direction, the first adjusting rod group and the second adjusting rod group both comprising a plurality of adjusting rods which are parallel with each other along a first direction and distributed at intervals, and the first direction being perpendicular to the up-down direction; a selection unit, the driving unit being used for driving the selection unit to be connected to at least one adjusting rod in the first adjusting rod group, or to be connected to at least one adjusting rod in the second adjusting rod group; a shift unit, which is used for switching the selection unit between the first adjusting rod group and the second adjusting rod group; and an adjusting unit, the driving unit being used for driving the adjusting unit to drive the adjusting rod connected to the selection unit to move, thereby driving the corresponding load to move along a direction consistent with the axial direction of the adjusting rod.
Patent WO-2021081782-A1 (WO)
Title: Sun care compositions with hollow mesoporous silica nanospheres
Inventor: WANG JINXIU
IPC: A61K8/44
Filed: 2019-10-30
Abstract: Described herein are sun care compositions comprising at least one sunscreen active and hollow mesoporous silica nanospheres, and methods of making and using the sun care compositions. The presently described sun care compositions further comprise at least one of a cosmetically acceptable emollient, humectant, vitamin, moisturizer, conditioner, oil, silicone, suspending agent, surfactant, emulsifier, preservative, rheology modifier, pH adjustor, reducing agent, anti-oxidant, and/or foaming or de-foaming agent.
Patent WO-2020181791-A1 (WO)
Inventor: MO SIMING
IPC: C03B37/014
Filed: 2019-10-30
Abstract: Disclosed are a large-size low-attenuation optical fiber preform and a preparation method therefor. The method comprises: preparing a preform core rod comprising an inner core layer, an outer core layer, an inner cladding layer, and a depressed layer by using an MCVD process, then depositing a first outer cladding loose body by means of a VAD process and preparing a primary optical fiber preform by means of primary sintering treatment, and finally depositing a second outer cladding loose body by means of an OVD process and obtaining an optical fiber preform by means of secondary sintering treatment. The diameter of the prepared optical fiber preform may be up to 215 mm, the fiber pulling length of a single preform may be up to 2930 km, the attenuation coefficient of an optical fiber at a wavelength of 1310 nm is as low as 0.298 dB/km, the attenuation coefficient of the optical fiber at a wavelength of 1383 nm is as low as 0.265 dB/km, the attenuation coefficient of the optical fiber at a wavelength of 1550 nm is as low as 0.165 dB/km, and the cutoff wavelength of the optical fiber is from 1265 nm to 1273 nm.
Patent WO-2020103683-A1 (WO)
Title: 基于脑功能图谱的猴-人跨物种迁移进行精神疾病的个体化预测方法和系统
Inventor: WANG ZHENG
IPC: A61B5/055
Filed: 2019-11-04
Abstract: 一种基于脑功能图谱的猴-人跨物种迁移进行精神疾病的个体化预测方法、系统以及一种确定精神疾病的预测模型的方法。该确定精神疾病的预测模型的方法包括步骤：(a)数据获取；(b)预处理；(c)脑区选择；(d)特征构建；(e)特征筛选；和(f)建模预测。该方法和系统具有无创、准确率高、敏感性高、特异性好、便于推广的特点。
Patent WO-2021031361-A1 (WO)
Inventor: SONG JINCHENG
IPC: B65G49/05
Filed: 2019-11-05
Abstract: Provided is a material integration device, which comprises a material transfer mechanism, and an integration mechanism (3) and a conveying mechanism (6), which are linked with a control system signal, wherein the material transfer mechanism is used for placing materials to be integrated onto the integration mechanism and transferring the integrated materials to the conveying mechanism, and a vacuum adsorption table (2) is installed on a manipulator (1) and used for adsorbing the materials; the integration mechanism comprises a vacuum negative pressure workbench (35), an angle adjusting table (5) and an electric push rod (4), the materials to be integrated are placed on the vacuum negative pressure workbench, the angle adjusting table is slidably arranged on the top surface of the vacuum negative pressure workbench and located on the side face of the materials to be integrated, the electric push rod is used for pushing the materials to be integrated to make them horizontal; and the conveying mechanism includes a conveyor belt for placing the integrated materials. The device is mainly suitable for integration of flaky materials, and can effectively prevent the materials from being rolled and stacked in the integration process; and the material angle adjustment can be carried out according to the integration requirements of the materials, and the device has the characteristics of high integration precision and high working efficiency.
Patent WO-2021092900-A1 (WO)
Inventor: ZHANG YUANTAO
IPC: H04W72/04
Filed: 2019-11-15
Abstract: La présente invention concerne un procédé et un appareil de communication sans fil. Un procédé mis en œuvre par un équipement utilisateur consiste : à déterminer un premier ensemble de ressources de commande sur la base d'informations de configuration associées à un second ensemble de ressources de commande; et à déterminer un premier espace de recherche sur la base d'informations de configuration associées à un second espace de recherche, le premier ensemble de ressources de commande étant associé au premier espace de recherche et le second ensemble de ressources de commande étant associé au second espace de recherche.
Patent WO-2020125293-A1 (WO)
Inventor: ZHANG YUXIA
IPC: A61K31/519
Filed: 2019-11-15
Abstract: L'invention concerne l'utilisation de dipyridamole dans la préparation d'un médicament pour le traitement de maladies gastro-intestinales, les maladies gastro-intestinales comprenant la colite et la maladie intestinale inflammatoire, et les patients étant de préférence des enfants.
Patent WO-2021017325-A1 (WO)
Inventor: ZHANG RU
IPC: G01N19/04
Filed: 2019-11-20
Abstract: L'invention concerne un appareil de test de force de poussée de point de liaison de transistor bipolaire à grille isolée (IGBT) ; une base verticale (2) est reliée à l'extrémité supérieure d'une base (1) ; l'extrémité supérieure de la base (1) est pourvue d'une première rainure de coulissement (3) ; le côté avant de la base verticale (2) est pourvu d'une seconde rainure de coulissement (4) ; l'extrémité supérieure de la première rainure de coulissement (3) est reliée à un mécanisme de positionnement (5) et la seconde rainure de coulissement (4) est reliée à un mécanisme de test (6) ; le mécanisme de positionnement (5) comprend une paroi latérale (23), une tige coulissante (7) et un berceau (8) ; une rainure de placement (9) est formée au milieu de la paroi latérale (23), les deux côtés de la paroi latérale (23) sont reliés à un bloc de limitation de position (10) et l'extrémité avant du bloc de limitation de position (10) est reliée à une colonne de limitation de position (11) ; un trou (12) est formé à une extrémité de la tige coulissante (7) ; la colonne de limitation de position (11) est intégrée dans un trou de bande (12) de la tige coulissante (7) ; un trou de positionnement (13) est formé sur l'autre extrémité de la tige coulissante (7) et le trou de positionnement (13) recouvre l'extérieur de la rainure de placement (9) ; la base (8) est reliée à l'extrémité inférieure de la paroi latérale (23), une barre horizontale (14) est reliée au fond de la base (8) et la barre horizontale (14) est intégrée dans la première rainure de coulissement (3) ; le côté arrière d'un capteur de test (15) est intégré et se déplace dans une seconde rainure de coulissement (4), et la tige de liaison (16) est connectée entre le capteur de test (15) et un dispositif de coupe de test (17). L'invention surmonte les problèmes de faible précision de test manuel dans l'actuel test de poussée de point de liaison d'IGBT et de coût élevé de test automatique.
Patent WO-2021036047-A1 (WO)
Inventor: CUI WEILONG
IPC: C07C17/363
Filed: 2019-11-25
Abstract: A process for the manufacture of a fluorinated benzene starting from benzoic acid by direct fluorination employing a fluorination gas, wherein the elemental fluorine (F 2 ) is preferably present in a high concentration, and subsequent decarboxylation of the benzoic acid hypofluorite obtained by direct fluorination. And a process for the manufacture of a benzoic acid hypofluoriteby direct fluorination of benzoic acid. The fluorination process may be performed batch-wise or in a continuous manner. If the process is performed batch-wise, a column (tower) reactor may be used. If the process is continuous, a micro-reactor may be used.
Patent WO-2020114378-A1 (WO)
Inventor: ZOU YU
IPC: G06K9/00
Filed: 2019-12-03
Abstract: A video watermark identification method and apparatus, a device, and a storage medium. The method comprises: dividing each video frame in a plurality of video frames into a plurality of image blocks to obtain an image sequence corresponding to each video frame; inputting the plurality of image sequences corresponding to the plurality of video frames into a target detection model to obtain a classification result of each image block and, on the basis of the classification results of all of the image blocks, obtaining a video eigenvector; inputting the video eigenvector into a watermark identification model to obtain a watermark identification probability outputted by the watermark identification model; and, when the watermark identification probability is greater than or equal to a probability threshold, determining that the video contains a watermark.
Patent WO-2020134934-A1 (WO)
Inventor: XU XIUFENG
IPC: H04L9/00
Filed: 2019-12-05
Abstract: 本申请提供一种高速的量子密钥生成系统同步方法及装置，其中方法包括，发送方将信号光的第一个光脉冲与同步光的第一个光脉冲对齐，且在每个同步光的周期T t内控制信号光N个连续的周期内不发光；接收方对接收到的信号光脉冲进行时间测量，信号光在每个周期T t除去N个连续的不发光的位置，其余相应的位置均有发光，这些发光的位置均可参与T 1i与T 2i的统计过程中，统计时间相对于现有只发单个信号光脉冲的方式降低了数个数量级，只需几百毫秒甚至更短的时间即可完成统计过程。故本申请方法具有硬件处理器消耗少，统计时间短的特点，能够明显改善系统同步过程中所需要消耗的时间，缩短通信系统建立链接所需要的时间。
Patent WO-2021109127-A1 (WO)
Inventor: WANG NINI
IPC: G02B13/18
Filed: 2019-12-06
Abstract: 一种光学系统(10)由物侧至像侧依次包括：光阑(STO)；具有正屈折力的第一透镜(L1)；具有负屈折力的第二透镜(L2)，第二透镜(L2)的物侧面(S3)于近轴处为凸面；具有屈折力的第三透镜(L3)、第四透镜(L4)及第五透镜(L5)；具有负屈折力的第六透镜(L6)，第六透镜(L6)的像侧面(S12)于近轴处为凹面；光学系统(10)满足关系：(TTL-BFL)/f＜0.92；TTL为第一透镜(L1)的物侧面(L1)到光学系统(10)的成像面(S15)于光轴上的距离，BFL为第六透镜(L6)的像侧面(S12)至成像面(S15)于平行光轴的方向上的最短距离，f为光学系统(10)的有效焦距。