baber/WOPTO huggingface dataset:
Patent WO-2019227484-A1 (WO)
Title: Efficient double-belt liquid mechanism for continuous open-width cold pad-batch dyeing/bleaching rolling mill
Inventor: HUNG TSE MING
IPC: D06B23/04
Filed: 2018-06-01
Abstract: An efficient double-belt liquid mechanism for a continuous open-width cold pad-batch dyeing/bleaching rolling mill, which relates to the technical field of continuous open-width cold pad-batch dyeing/bleaching devices, and aims to ensure a sufficient liquid-carrying effect under controllable tension conditions. Comprised is a working liquid immersion tank, said working liquid immersion tank being provided with a driving roller and a driven roller. Water retaining plates are disposed at two sides of the driving roller and the driven roller, and the driving roller, the driven roller and the water retaining plates form a V-shaped immersion tank for liquid storage purposes. A batching tube is disposed above the V-shaped immersion tank. Excess air in a fabric structure is replaced by a working liquid in the working liquid immersion tank when pre-wetting, and the fabric is then rolled by a pre-rolling liquid roller group. After being rolled, the moisture in the fabric structure is extruded, and in the process, a negative pressure is also generated between yarn of the fabric and fiber thereof to aid in the supply of liquid. At the same time, a surface of the fabric is pre-wetted and contains the working liquid, and the surface tension thereof is also changed, which is beneficial for the capillary action to be effectively strengthened, thereby achieving an optimum liquid-carrying rate.
Patent WO-2018224042-A1 (WO)
Title: 一种信号传输方法、相关设备及系统
Inventor: JIA QIONG
IPC: H04W72/04
Filed: 2018-06-08
Abstract: 本申请实施例公开了一种信号传输方法、相关设备及系统。所述方法可包括：接收网络设备发送的第一指示信息，所述第一指示信息用于指示网络设备在第一带宽上为终端分配的上行资源；所述第一指示信息指示的资源包括均匀分布在部分或全部的第一带宽上的整数个资源块；在监听到的空闲的第二带宽上进行上行传输；向网络设备发送第二指示信息；所述第二指示信息用于指示所述第二带宽。上述方案可支持灵活带宽传输，能够更好的适应下一代新空口技术支持的多带宽场景。
Patent WO-2020000365-A1 (WO)
Title: Dispositif de mémoire tridimensionnel pourvu d'une couche de blindage, et son procédé de formation
Inventor: HUO ZONGLIANG
IPC: H01L27/088
Filed: 2018-06-29
Abstract: L'invention concerne, selon des modes de réalisation, des dispositifs de mémoire tridimensionnels (3D) et leurs procédés de formation. Dans un exemple, un dispositif de mémoire 3D comprend un substrat, un dispositif périphérique disposé sur le substrat, une couche semi-conductrice disposée sur le dispositif périphérique, une pluralité de chaînes de mémoires s'étendant chacune verticalement sur la couche semi-conductrice, et une couche de blindage disposée entre le dispositif périphérique et la couche semi-conductrice. La couche de blindage comprend une région de conduction configurée pour recevoir une tension de mise à la terre pendant le fonctionnement du dispositif de mémoire 3D.
Patent WO-2020014890-A1 (WO)
Title: Accent-based voice recognition processing method, electronic device and storage medium
Inventor: HSIEH KUAN-HONG
IPC: G10L15/22
Filed: 2018-07-18
Abstract: Provided are an accent-based voice recognition processing method, an electronic device and a storage medium, wherein the method comprises: receiving and recognizing a preset number of training voice instructions to obtain a voice recognition result corresponding to each training voice instruction (S202); when a preset training trigger condition is met, triggering to enter an accent training state, comparing the voice recognition result corresponding to each training voice instruction to obtain a comparison result (S204); when the comparison result meets a consistency condition, performing fuzzy matching between the voice recognition result and standard voice instructions to obtain a candidate standard voice instruction (S206); confirming the candidate standard voice instruction, and determining the standard voice instruction matched with the training voice instruction (S208); according to the training voice instruction and the matched standard voice instruction, determining accent features of the training voice instruction, wherein the accent features are used to correct and recognize the to-be-recognized voice instruction carrying the corresponding accent features (S210). The accent features of the corrected voice instruction are obtained through accent training, so as to improve the recognition accuracy.
Patent WO-2019052304-A1 (WO)
Title: Touch panel and driving method therefor, touch apparatus
Inventor: LIU YINGMING
IPC: G06F3/041
Filed: 2018-08-16
Abstract: Provided are a touch panel and a driving method therefor, and a touch apparatus. The touch panel comprises: a first substrate (101), a second substrate (201), a first electrode (111), a piezoelectric layer (112), and a second electrode (211). The second substrate (201) and the first substrate (101) are provided opposite to each other; the first electrode (111) is located at the side of the first substrate (101) distant from the second substrate (201) and is configured to provide a reference; the piezoelectric layer (112) is located between the first electrode (111) and the first substrate (101); the second electrode (211) is located between the first substrate (101) and the second substrate (201); the piezoelectric layer (112) is configured to generate a first charge (C1) at the side proximate to the second electrode (211) when being pressed; and the second electrode (211) is configured to be coupled to the first charge (C1) at the press position and output a touch signal (Sp). Sensitive pressure touch detection can be implemented.
Patent WO-2020024338-A1 (WO)
Title: Structure d'assemblage
Inventor: LI HUI
IPC: F16M13/02
Filed: 2018-08-17
Abstract: L'invention concerne une structure d'assemblage, comprenant une base fixe (1) et un élément fonctionnel (2) qui est en liaison suspendue avec la base (1), l'élément fonctionnel (2) étant relié à la base (1) au moyen d'une broche de positionnement (4) et d'une première goulotte (3) qui reçoit la broche de positionnement (4), et la broche de positionnement (4) étant disposée horizontalement et la première goulotte (3) étant disposée obliquement ; disposée sur la première goulotte (3) se trouve une partie de fixation (5) qui vient en butée contre la surface externe radiale de la broche de positionnement (4), et disposée au point haut de la première goulotte (3) se trouve une première sortie qui permet à la broche de positionnement (4) de passer à travers.
Patent WO-2019072047-A1 (WO)
Title: Traction device for curved balloon catheter and traction method thereof
Inventor: ZHANG CHUANHAI
IPC: A61B17/02
Filed: 2018-08-30
Abstract: Provided is a traction device for curved balloon catheter, which is characterized by comprising: a catheter (5) with a handle (2) at one end, a locator (3) and a traction balloon (4) arranged outside the catheter (5), wherein one or more cavities are arranged in the catheter (5), the catheter part is provided with at least one hole, at least one cavity fills and discharges the traction balloon (4) with fluid through the hole, the traction balloon (4) bends to one side when filled with fluid, and the handle (2) can drive the catheter (5) and the traction balloon (4) to rotate, thus realizing a simple and reliable traction.
Patent WO-2019042410-A1 (WO)
Title: Battery equalization method and system, vehicle, storage medium, and electronic device
Inventor: LUO HONGBIN
IPC: H02J7/00
Filed: 2018-08-31
Abstract: A battery equalization method, comprising: obtaining a SOC value of at least one cell in a battery pack; determining, according to the SOC value of the at least one cell in the battery pack as well as three intervals (0, SOC1), (SOC1, SOC2), and (SOC2, 100%), the interval where the SOC value of the at least one cell is located; and determining, according to the interval where the SOC value of the at least one cell is located, to use a SOC difference or a load voltage difference to determine a cell needing to be equalized. For the case where the SOC value of at least one cell in a battery pack is within an interval (0, SOC1), (SOC1, SOC2), or (SOC2, 100%), battery parameter information with relatively high accuracy can be utilized to determine a cell needing to be equalized, and therefore, the method improves the accuracy of determining the cell needing to be equalized. Also disclosed are a battery equalization system, a vehicle, a storage medium, and an electronic device.
Patent WO-2020047772-A1 (WO)
Title: Photosensitive module, and electric toy and control method therefor
Inventor: YOU ZHONGQIAN
IPC: G08C23/04
Filed: 2018-09-05
Abstract: A photosensitive module (100) in the field of electric toys, and an electric toy (200) equipped with the photosensitive module (100) and a control method therefor. The photosensitive module (100) comprises a photosensitive plate (10) and a controller (20). The photosensitive plate (10) comprises at least a first photosensitive area (110) and a second photosensitive area (120). The first photosensitive area (110) receives a laser signal to form a first signal and transmits same to a controller (20); the second photosensitive area (120) receives a laser signal to form a second signal and transmits same to the controller (20). The controller (20) transmits a corresponding control signal to the electric toy (200) according to the first signal and the second signal received. The photosensitive module (100) can generate, according to partitions on the photosensitive plate (10), different response signals after laser light is irradiated to different areas, thereby improving the intelligence of the photosensitive module (100).
Patent WO-2020029359-A1 (WO)
Title: Microphone
Inventor: ZOU QUANBO
IPC: H04R1/08
Filed: 2018-09-06
Abstract: Disclosed in the present invention is a microphone. The middle position of a diaphragm plate is connected to a substrate by means of an elastic torsion beam to form a seesaw structure; the position of the second side of the diaphragm plate is provided with multiple spaces through which sound passes; the first side of and the second side of the diaphragm plate are respectively provided with a first detection structure and a second detection structure for representing deflection electrical signals at the corresponding sides of the diaphragm plate. The microphone of the present invention has high sensibility, the impact of the volume of a rear cavity on the microphone is low, the development of the microphone toward smaller thickness can be implemented, and the performance of the microphone can be ensured.
Patent WO-2019057002-A1 (WO)
Title: Thermal spray graphene enamel and use thereof
Inventor: YUAN GUOQING
IPC: C23C4/10
Filed: 2018-09-17
Abstract: Provided is a thermal sprayed graphene enamel, comprising the following weight percentages of raw materials: 80 to 98% of a first raw material, 0.2 to 2% of graphene powder, 0.5 to 1% of borax, and 1 to 3% of pigment. The first raw material is a mixture of one or more of porcelain glaze powder, ceramic slurry, ceramic powder and quartz powder. The thermal sprayed graphene enamel has a bactericidal and algae-inhibiting effect by forming a coating by using thermal spraying equipment, which is easy to maintain and reduces maintenance costs.
Patent WO-2020051950-A1 (WO)
Inventor: PEI YANLIANG
IPC: H04L29/08
Filed: 2018-09-27
Abstract: La présente invention concerne un appareil de surveillance sismique sous-marin basé sur un internet des objets sous-marin, l'appareil comprenant : un dispositif de réseau flottant de surface marine (1), un dispositif de réseau sous-marin (2), un système d'amarrage (3) et un dispositif de détection sismique sous-marin (4), le dispositif de réseau flottant de surface marine (1) étant connecté au dispositif de réseau sous-marin (2) au moyen du système d'amarrage (3) ; le dispositif de réseau sous-marin (2) est connecté au dispositif de détection sismique sous-marin (4) au moyen d'un câble composite photoélectrique sous-marin (6) ; un ou plusieurs dispositifs de détection de tremblement de terre sous-marin (4) ; le dispositif de réseau flottant de surface marine (1) comprend un appareil d'émission-réception satellitaire (101), un serveur de plateforme d'Internet des objets (102), un serveur d'horloge de réseau (103) et un appareil d'alimentation en énergie autonome (104) ; le dispositif de réseau sous-marin (2) comprend une cabine de séparation photoélectrique (201), un serveur sous-marin (202), un poids d'ancrage inférieur (203) et un dispositif de libération mécanique (204) ; le dispositif de détection sismique sous-marin (4) comprend des nœuds de réseau multiples de sismographe sous-marin ; et les nœuds de réseau multiples de sismographe sous-marin sont connectés séquentiellement en série bout à bout au moyen du câble composite photoélectrique sous-marin (6). L'invention concerne en outre un système de surveillance sismique sous-marin basé sur l'Internet des objets sous-marin, le système comprenant des appareils de surveillance sismique sous-marins multiples connectés les uns aux autres. L'appareil ou le système peut fournir de l'énergie de façon autonome et réaliser un fonctionnement sans surveillance à long terme de celui-ci, et peut être utilisé pour une détection de structure sous-marine et des avertissements précoces pour des tremblements de terre et des tsunamis.
Patent WO-2019109741-A1 (WO)
Title: 异常数据访问的识别方法和装置
Inventor: GUO LONG
IPC: H04L29/06
Filed: 2018-10-18
Abstract: 说明书披露一种异常数据访问的识别方法和装置。该方法包括：获取目标数据访问行为的原始访问信息；将所述原始访问信息量化为多个维度的目标访问特征参数；将所述多个维度的目标访问特征参数作为入参输入已训练的访问模型；根据所述访问模型的输出结果判断所述目标数据访问行为是否异常。
Patent WO-2020037805-A1 (WO)
Title: Physiological parameter monitoring device, system and working mode setting method
Inventor: LI JIUCHAO
IPC: A61B5/0245
Filed: 2018-10-18
Abstract: Disclosed are a physiological parameter monitoring device, a system and working mode setting method. The physiological parameter monitoring device comprises: a device housing (1) containing a master control module and an electrocardiac monitoring module; the master control module being connected with the electrocardiac monitoring module; the device housing (1) being provided with an electrocardiac probe contact point (4) for inputting human electrocardiac signals; and the electrocardiac monitoring module being connected with the electrocardiac probe contact point (4). The physiological parameter monitoring device, the system and working mode setting method effectively solve the problem of a wrist type electrocardiac monitoring device for implementing continuous measurement in real time, and the problem of existing electrocardiac monitoring devices in the form of breast band, waist band or clothes for getting accurate measurement results from different human dimensions and catering to group specificity with changeless using mode.
Patent WO-2020029427-A1 (WO)
Title: Automatic lid loading mechanism of automatic beverage vending machine
Inventor: MA LIXIONG
IPC: G07F13/06
Filed: 2018-10-18
Abstract: Provided is an automatic lid loading mechanism of an automatic beverage vending machine, the automatic lid loading mechanism comprising a lid loading tube (1) used for accommodating cup lids, wherein a lid loading device is fixedly mounted at a bottom end of the lid loading tube (1); the lid loading device comprises a fixed ring (2) fixedly mounted on the lid loading tube (1), a movable ring (3) which is sheathed on the lid loading tube (1) and which can move relative the fixed ring (2), and multiple hook mechanisms used for hooking the cup lid in the lid loading tube (1); and the hook mechanism comprises a clamping claw (4) that can be rotatably mounted on the fixed ring (2) and extends towards a central axis of the lid loading tube (1), and a touch bar (5) that is mounted on the movable ring (3), extends towards the clamping claw (4) and abuts against same. Specifically, the bottom of the fixed ring (2) is provided with multiple hinge portions (6) rotatably connected to the clamping claws (4), the clamping claws (4) are mounted on the hinge portions (6) by means of a rotating shaft, an elastic device used for driving the clamping claw (4) to rebound outwards is mounted on the rotating shaft, and the elastic device comprises a spring. The automatic lid loading mechanism has a compact structure, is applicable to multiple types of cup lids, and has wide applicability.
Patent WO-2019085826-A1 (WO)
Inventor: LIN CAICAN
IPC: G04B19/06
Filed: 2018-10-26
Abstract: 一种智能手表（1）切换时区表盘的方法，智能手表（1）包括：处理器、主表盘（2）和至少一个副表盘（3）；主表盘（2）包括主表盘指针和主表盘刻度盘；副表盘（3）包括副表盘指针和副表盘刻度盘；主表盘指针和副表盘指针由不同的指针马达驱动；副表盘（3）可以设置在主表盘（2）之外，也可以设置在主表盘（2）内部。
Patent WO-2020093445-A1 (WO)
Inventor: REN QIANG
IPC: C08F220/56
Filed: 2018-11-20
Abstract: Disclosed are a quadripolymer based on a host-guest interaction and a preparation method therefor. The preparation process involves: (1) weighing maleic anhydride, dissolving same in dichloromethane, dropwise adding β-phenylethylamine, stirring and reacting same for 1-3 hours, and suction filtering, washing and vacuum drying same to obtain N-phenylethylmaleamic acid; (2) weighing mono-6-ethylenediamine β-cyclodextrin and maleic anhydride, dissolving same in N,N-dimethylformamide, reacting same for 3-6 h at 40℃, allowing a product to precipitate out by using chloroform, and washing and vacuum drying same to obtain maleic anhydride-modified mono-6-ethylenediamine β-cyclodextrin; and (3) adding acrylamide, acrylic acid, the maleic anhydride-modified mono-6-ethylenediamine β-cyclodextrin and N-phenylethylmaleamic acid to distilled water, adjusting the pH value of the solution to 7, introducing nitrogen to remove oxygen, adding a photoinitiator, and placing same in a light-initiation device for a reaction of 3-5 hours at a reaction temperature of 10-30℃. The quadripolymer has a better temperature and salt resistance and shear resistance, the raw materials thereof are cheap and easily available, and the reaction conditions are mild. Same has broad market application prospects.
Patent WO-2019114527-A1 (WO)
Title: 一种生产高活性木质素和副产糠醛的方法及应用
Inventor: JIANG CHENGZHEN
IPC: C07D307/46
Filed: 2018-11-23
Abstract: 本发明提供一种生产高活性木质素和副产糠醛的方法及应用，所述方法以溶解浆预水解液和/或亚硫酸盐蒸煮液的原料出发，采用酸作为催化剂进行催化，得到所述木质素和糠醛；其中，所述酸为硫酸、磷酸、硝酸、盐酸或醋酸中的任意一种或至少两种的组合。所述方法通过将溶解浆预水解液和/或亚硫酸盐蒸煮液在酸的催化下，使得到的木质素和糠醛的得率进一步提高。尤其是木质素具有较高的反应活性、低分子量；糠醛中的5-甲基糠醛和糠醛的比例在合适的范围内，能够进一步提高糠醛制备的呋喃树脂的强度。
Patent WO-2019105403-A1 (WO)
Inventor: ZHANG HONGYAN
IPC: A61P31/00
Filed: 2018-11-29
Abstract: 提供了一种抑制乙型肝炎病毒基因表达的siRNA，含有该siRNA的药物组合物和缀合物。所述siRNA中的每个核苷酸各自独立地为修饰或未修饰的核苷酸，该siRNA含有正义链和反义链，所述正义链含有核苷酸序列A，所述核苷酸序列A与SEQ ID NO：1所示的核苷酸序列长度相等，且不多于3个核苷酸差异，所述反义链含有核苷酸序列B，所述核苷酸序列B与SEQ ID NO：2所示的核苷酸序列长度相等，且不多于3个核苷酸差异。
Patent WO-2020113375-A1 (WO)
Inventor: WEI ZHENG
IPC: H04R1/10
Filed: 2018-12-03
Abstract: Disclosed in the present invention are an earphone sleeve and an earphone assembly comprising same. The earphone sleeve is made of a flexible material. The earphone sleeve comprises a first attachment end and a second attachment end, as well as a support portion projecting radially outward. The first attachment end and the second attachment end are used for attaching the earphone sleeve to the outer surface of an earphone. The support portion is used for supporting in the cavity of concha of a user. A space is defined in the support portion so that the inner surface of the support portion and the outer surface of earphone are spaced apart by the space when the earphone sleeve is sleeved on the earphone, and the support portion can be deformed by virtue of the elasticity of its own material under the pressure of the ear so that the air in the space is discharged through the first attachment end and/or the second attachment end; and when the earphone is removed from the ear, the support portion can naturally return to its original state by virtue of the elasticity of its own material. The earphone sleeve according to the present invention can be adaptively adjusted after being worn by the user, thereby improving the stability and comfort of wearing.
Patent WO-2020124383-A1 (WO)
Title: Procédé de commande d'affichage, dispositif électronique et support de stockage lisible par ordinateur
Inventor: LI YOU
IPC: G09G5/14
Filed: 2018-12-18
Abstract: L'invention concerne un procédé de commande d'affichage, un dispositif électronique (50) et un support de stockage lisible par ordinateur. Le procédé de commande d'affichage comporte les étapes consistant à: commander un capteur d'image pour acquérir une image, par rapport à un corps, dans une plage de régions prédéfinie (100); déterminer si l'image comprend une caractéristique de corps humain (102); si oui, acquérir des informations concernant l'emplacement d'un utilisateur correspondant à la caractéristique de corps humain dans la plage de régions prédéfinie (104); et déterminer, en fonction des informations concernant l'emplacement, une plage visuelle de l'utilisateur par rapport à un écran d'affichage, et commander l'affichage d'une image dans une région, correspondant à la plage visuelle, de l'écran d'affichage (106). Selon les modes de réalisation de la présente invention, au moyen de l'acquisition d'informations concernant l'emplacement d'un utilisateur dans une plage de régions prédéfinie et de l'affichage d'une image dotée d'une plage d'affichage prédéfinie d'après les informations concernant l'emplacement, lorsque l'emplacement de l'utilisateur change, l'emplacement du contenu affiché sur un écran peut être ajusté, ce qui facilite une amélioration de l'agrément d'utilisation.
Patent WO-2019141071-A1 (WO)
Inventor: JIN YAOQING
IPC: B23P21/00
Filed: 2018-12-29
Abstract: 一种结构件模块化智能装配柔性生产线，包括工位（1）与上料台（2），工位（1）设有N个，工位（1）环形整列布置，上料台（2）设置在工位（1）的中间，上料台（2）设有N个上料工位（21），上料工位（21）设有凹槽（22），凹槽（22）内设有顶出液压缸（23），凹槽（22）的侧墙设有通孔（24），通孔内设有运输带（25），工位（1）之间均设有传输装置，工位（1）上设有定位台（11），定位台（11）与工位（1）活动连接，定位台（11）包括定位座（111）、固定部（112），定位座（111）设置在定位台（11）的上方中间，固定部（112）设置在定位座（111）的侧边，每个工位（1）均设有机械手（4），机械手（4）设有结构件抓取治具（41），结构件抓取治具（41）与机械手（4）活动连接。
Patent WO-2020073536-A1 (WO)
Title: 语音切换方法、电子设备及系统
Inventor: CAI SHUANGLIN
IPC: H04W36/36
Filed: 2018-12-29
Abstract: 一种语音切换方法、电子设备及系统，其中语音切换方法可以包括手机或语音助理设备根据用户的操作向VoIP服务器发送语音切换请求信息，VoIP服务器根据该请求信息将手机上正在进行的语音通话切换到手机附近的语音助理设备例如智能音箱。基于该方法，手机的用户可以脱离手机，并在不中断语音通话的情况下通过语音助理设备来继续进行语音通话。该方法提高了语音切换的效率，方便了用户，改善了用户体验。
Patent WO-2019144901-A1 (WO)
Title: Intelligent sharing food cabinet
Inventor: WU JIEYANG
IPC: G07F11/00
Filed: 2019-01-24
Abstract: An intelligent sharing food cabinet, comprising a case (1), a host working power supply (2) provided at an upper end of the case, a temperature control switch provided above the host working power supply, a control mechanism (3) provided at the side of the host working power supply, a display screen (4) provided at an upper end of the case and facing a selling area, and a code scanning device (5) provided at the side of the display screen. At least one goods storage cabinet (6) is provided inside the case. LED lamp sets (7) are provided at an upper end of the goods storage cabinet. Insulation layers are provided at an inner side of peripheries of the goods storage cabinet.
Patent WO-2020164043-A1 (WO)
Inventor: ZHANG LIANBIN
IPC: B63H5/14
Filed: 2019-02-14
Abstract: 一种全浸式水下推进器（100）和电动浮板，其包括推进器壳体（10）、螺旋桨叶（20）、驱动电机（30）、电机轴（40）以及导流罩（50），推进器壳体（10）包括一安装基部（11），安装基部（11）具有相对的第一侧（11a）和第二侧（11b），螺旋桨叶（20）位于该安装基部（11）第一侧（11a）的一侧；驱动电机（30）用于使螺旋桨叶（20）转动，驱动电机（30）包括定子部分（31）和转子部分（32），定子部分（31）固定在该安装基部（11）的第二侧（11b）上；电机轴（40）具有相对的第一端（40a）和第二端（40b），电机轴（40）的第一端（40a）与驱动电机（30）的定子部分（31）固定，第二端（40b）延伸至驱动电机（30）之外并与螺旋桨叶（20）连接；导流罩（50）设置在安装基部（11）与螺旋桨叶（20）之间，电机轴（40）与螺旋桨叶（20）之间设置有止转结构，以限制二者相对转动。这样，能够大大提高潜行速度，并具有较长的使用寿命。
Patent WO-2020140312-A1 (WO)
Title: 投影装置及投影方法
Inventor: FENG RUI
IPC: H04N13/363
Filed: 2019-02-15
Abstract: 一种投影装置及投影方法，涉及投影技术领域，投影装置包括：光源（1）、投影片（2）和透镜（3），投影片（2）和透镜（3）均位于光源（1）的光路中，透镜（3）的焦距大于0，光源（1）和透镜（3）的位置关系满足公式：0≤E≤(216/D)  0.8 ，其中，E为光源和透镜之间的距离，单位为厘米；D为透镜的焦距，单位为厘米，缓解了现有技术中3D投影成本高昂的技术问题，且可以使投影片上的图案投射为三维立体的影像。