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99results about How to "Shorten the space distance" patented technology

Genetic-algorithm-based trajectory planning optimization method for mobile mechanical arm

ActiveCN103235513AExcellent exercise timeReduce wearAdaptive controlMathematical modelCurve fitting
The invention relates to a genetic-algorithm-based trajectory planning optimization method for a mobile mechanical arm. According to the technical scheme, the method comprises the following steps of first establishing a forward kinematic model and an inverse kinematic model of a multi-degree-of-freedom mobile mechanical arm; then fitting a joint trajectory by adopting a composite curve of a quartic polynomial mathematical model and a quintic polynomial mathematical model, and calculating solutions of the corresponding mathematical models according to a linear constraint equation; next selecting a trajectory optimization target according to the principles of shortest motion time, minimum spatial motion distance and less than or equal to maximum set joint torque of the mobile mechanical arm; and finally globally optimizing the optimization target by utilizing a genetic algorithm to obtain an optimal trajectory curve of an end actuator of the mechanical arm. According to the method, the trajectory planning efficiency and the tracking accuracy of the mechanical arm are improved, and the problems of real-time trajectory planning of the mobile mechanical arm and trajectory planning optimization and control of the mechanical arm in an uncertain environment are also solved; and the trajectory planning optimization method for the mobile mechanical arm is effective.
Owner:WUHAN UNIV OF SCI & TECH

High-precision method for measuring attitude angle of triaxial air bearing table and measurement device thereof

The invention provides a high-precision method for measuring the attitude angle of a triaxial air bearing table and a measurement device thereof. The measurement device is characterized in that: a guide rail and a window shade are arranged at the perimeter of the bottom of the triaxial air bearing table, an artificial illumination system is arranged on a liftable platform, the guide rail of the bottom of the triaxial air bearing table is used for installing the window shade, a marker is fixed on the bottom surface of the table facet of the triaxial air bearing table, a digital CCD camera is arranged on the liftable platform. The measurement method comprises the following steps: marking the digital CCD camera; collecting the images of the marker and transmitting to a computer which is responsible for image processing by the digital CCD camera; carrying out sub-pixel positioning on the mark point on the marker, and acquiring the precise coordinate of the mark point in the image; and calculating the relative attitude angle between the marker and the digital CCD camera. The measurement device has the advantages of simple installation, and high measurement precision, and can complete the high-precision attitude measurement of the air bearing table. The invention also can be used for the precision measurement of a uniaxial air bearing table.
Owner:HARBIN INST OF TECH

Short-distance optical amplifier module, short-distance optical amplification method and short-distance optical amplification system

The invention discloses a short-distance optical amplifier module, a short-distance optical amplification method and a short-distance optical amplification system. The short-distance optical amplifier module comprises a reflective polarizer, a first phase retarder, an imaging lens, a second phase retarder and an absorptive polarizer, wherein the reflective polarizer is arranged in the transmission path of an optical image. The first phase retarder is arranged in the transmission path of the optical image which penetrates through the reflective retarder. The imaging lens is arranged in the transmission path of the optical image. The second phase retarder is used for converting the polarization direction of the optical image from an elliptical or circular polarization direction to a second linear polarization direction. The absorptive polarizer is arranged on one side, which is far from the imaging lens, of the second phase retarder. The short-distance optical amplifier module makes light be reflected and refract. Because no light loss exists in reflection, light loss of refracted light because of dispersion caused by a manner in which refraction and reflection are successively performed in an existing short-distance optical amplifier module, and light quality reduction are prevented.
Owner:SHENZHEN DLODLO NEW TECHNOLOGY CO LTD

Assembly Cell For Assembling Modules From Work Pieces On Pallets, As Well As Method For Its Operation

The invention pertains to an assembly cell (1; 21, 22) that is suitable for the assembly of modules (55) from work pieces (35) on pallets (33; 42, 43; 54; 68, 69) and features several pallet stations (3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h), in which pallets can be positioned, wherein at least some of the pallet stations are realized in the form of assembly stations for carrying out assembly work on the modules on the pallets., and with at least one transport device for transporting the pallets between the pallet stations. The invention is characterized in that the transport device is realized in the form of a triaxial module (2; 23, 24) that is able to transport an individual pallet from any pallet station within the assembly cell to any other unoccupied pallet station within the assembly cell. The invention therefore makes available an assembly cell, by means of which modules can be assembled independently of the spatial arrangement of the assembly stations, wherein said assembly cell requires fewer pallets and makes it possible to realize a faster transport of the pallets from assembly station to assembly station.
Owner:FELSOMAT

Preparation method of composite photocatalyst TiO2/g-C3N4 derived from MOF (Metal Organic Frameworks)

The invention belongs to the technical field of materials, in particular to a preparation method of a composite photocatalyst TiO2 / g-C3N4 derived from MOF (Metal Organic Frameworks). The photocatalystis prepared by a hydrothermal method and a calcination method. A porous titanium-based metal organic framework MIL-125 is prepared by the hydrothermal method. Porous TiO2 nanoparticles are obtained by the calcination process. Melamine is grown in situ on the porous titanium-based metal organic framework MIL-125 by calcination process to obtain the composite photocatalyst TiO2 / g-C3N4. The preparation method provided by the invention is simple, and problems such as agglomeration of TiO2 particles, low specific surface area and low utilization rate of visible light can be effectively solved. Thespecific surface area of the TiO2 can be improved by the porous structure of the titanium-based metal organic framework MIL-125. A photocatalytic range of the TiO2 can be effectively improved by theg-C3N4. The composite photocatalyst TiO2 / g-C3N4 can effectively broaden a spatial distance of photogenerated electron holes, and inhibit the combination of the two. Therefore, the photocatalytic efficiency is greatly improved, the cost is low, environmentally frendly is ensured, and the practical applications and the industrialized productions are improved.
Owner:SHANDONG JIAOTONG UNIV

Profile of waste bamboo material and its prepn

The profile of waste bamboo material is prepared with bamboo powder 40-70 wt%, plastic resin 20-40 wt%, nanometer level calcium carbonate 5-15 wt%, fire retardant 1-5 wt%, antiager 1-3 wt%, lubricant 2-4 wt% and brightener 1-3 wt%. The preparation process includes the following steps: drying waste bamboo material to water content of 6-10 wt% and crushing to 100-400 mesh; mixing materials in the said proportion and blending in a blender at 150-180 deg.c for 15-20 min; extruding in a double screw extruder and cooling to form. The present invention has low cost, rich material source and simple preparation process, and the profile has high compactness, excellent mechanical performance and other advantages.
Owner:ZHEJIANG UNIV

Friction stabilizer with tabs

InactiveUS20070196183A1Difficult to removeDecrease spaced distanceAnchoring boltsEngineeringSheet material
A friction stabilizer having tabs comprising a tubular body comprising an exterior surface and having a first portion and having a second portion provided with a taper. The first portion has an impact end and the second portion has an insertion end. A tab is on the tubular body and extends outward from the exterior surface of the tubular body in a direction toward the impact end and away from the insertion end of the tubular body. The tabs can be rectangular shaped or triangular shaped or have other shapes which prevent the friction stabilizer from being removed from a drilled bore in a mine. When the friction stabilizer with tabs is inserted into a drilled bore in a mine, the tabs do not impede insertion. But, after insertion into the drilled bore the tabs resist removal of the tubular body, and thus allow the stabilizer to support the mine wall or ceiling. The friction stabilizer is made by taking a steel coil and punching the shape of the tabs in the metal, for example sheet metal, unrolled from the coil. A notch is also punched into the sheet at a predetermined location. Rolling die roll the tubular body, and a cutting machine cuts the tubular body at the notches, so tubular bodies of predetermined length are cut. The tabs extend from the exterior surface of the tubular body due to the natural spring constant of the steel or metal from which the tubular body is made. A weld ring is welded to the impact end and has a weld ring gap space. In another embodiment the tubular body has first portion, a second portion with a bent portion joining them together. An extendable tab is formed in the first portion proximal the bend portion and the extendable tab is diametrically opposite a tube gap space.
Owner:VALGORA GEORGE G

Clamp coupling and method of fastening the same

A clamp coupling includes clamp segments and a connecting section including a fastening section and a contact section. The contact section connects the clamp segments and includes a changing means to change a spaced distance between the clamp segments. The fastening section includes an externally threaded body and an internally threaded body for holding the clamp segments thereby to reduce the spaced distance between the clamp segments and connect objects. A method of fastening the clamp coupling includes holding the shim in the contact section between one ends of the clamp segments in a case that adjustment is made so that a circumferential length of the clamp segments is increased and removing the shim from the contact section so that the clamp segments are brought into direct contact with each other in a case that adjustment is made so that the circumferential length of the clamp segments is shortened.
Owner:TOYOTA IND CORP

Design and construction method for adjacent new construction or simultaneous construction of bridge and subway tunnel

The invention discloses a design and construction method for adjacent new construction or simultaneous construction of a bridge and a subway tunnel. When the clear distance between the line positionsof the left subway tunnel and the right subway tunnel is 8.6-13.5 m, a bidirectional framing type section bridge or a bidirectional whole-width type section bridge is adopted as the bridge. One one-way single-width bridge or the two-way whole-width section bridge in the two-way framing type section bridge spans one subway tunnel through a transverse single-span frame beam. The structural center line of the one-way single-width bridge or the two-way whole-width type section bridge is aligned with the structural center line of the crossed subway tunnel, the other subway tunnel crosses underground from the side of the bridge, and the minimum horizontal safe clear distance between the crossed subway tunnel and the adjacent bridge pile foundation is controlled to be 2-4 m. The bridge and the subway tunnel span each other (cross) in the space, it is guaranteed that the spatial distance between the bridge and the subway tunnel reaches the minimum when the bridge and the subway tunnel span each other or cross each other, and mutual safety of structural bodies of the bridge and the subway tunnel is guaranteed through various comprehensive measure methods.
Owner:GUANGZHOU MUNICIPAL ENG DESIGN & RES INST CO LTD

Real-time optical flow estimation method based on lightweight convolutional neural network

The invention discloses a real-time optical flow estimation method based on a lightweight convolutional neural network, and the method comprises the steps: giving two adjacent frames of images, and constructing a multi-scale feature pyramid with shared parameters; on the basis of the constructed feature pyramid, constructing a U-shaped network structure of a first frame of image by adopting a deconvolution operation to perform multi-scale information fusion; initializing the lowest resolution optical flow field to be zero, and performing deformation operation based on bilinear sampling on a second frame matching feature after the optical flow estimated by the second low resolution is up-sampled; carrying out local similarity calculation based on an inner product on the features of the first frame and the deformed features of the second frame, constructing a matching cost, and carrying out cost aggregation; taking the multi-scale features, the up-sampled optical flow field and the matching cost features after cost aggregation as the input of an optical flow regression network, and estimating the optical flow field under the resolution; and repeating until the optical flow field under the highest resolution is estimated. According to the invention, optical flow estimation is more accurate, and the model is lightweight, efficient, real-time and rapid.
Owner:SHANGHAI JIAO TONG UNIV

Fabric transaction system and method based on mobile client terminals

The invention provides a fabric transaction system based on mobile client terminals. The fabric transaction system comprises a server, the purchaser client terminals and the supplier client terminals, wherein the purchaser client terminals submit fabric purchasing information to the server, the supplier client terminals submit fabric supplying information to the server, the fabric purchasing information and the fabric supplying information are stored to a database through the server and further matched through the server, and if at least one piece of information of the fabric purchasing information is matched with the fabric supplying information, reminding information is sent to the matched supplier client terminals. By means of the fabric transaction system, a series of complex activities are changed to be completed online, the working efficiency is effectively improved, and the space distance is shortened; meanwhile, due to the keyword matching technology, the turnover is greatly improved, and the market vitality is stimulated. The invention further discloses a fabric transaction method based on the mobile client terminals.
Owner:NINGBO SOUBU INFORMATION TECH

Entity identification method and device, equipment and storage medium

The invention provides an entity recognition method and device, equipment and a storage medium. The method comprises the steps of obtaining original threat intelligence texts; for each original threat intelligence text, marking each segmented word in the original threat intelligence text according to the entity type of the entity to which the segmented word belongs to obtain a training sample; and inputting the training sample into an entity recognition model, and training the entity recognition model by using each segmented word in the training sample and the entity mark corresponding to the segmented word to obtain a trained entity recognition model, wherein a loss function used by the entity recognition model in the training process is used for reducing the spatial distance between segmented words with the same entity mark and increasing the spatial distance between segmented words with different entity marks; and inputting to-be-recognized threat intelligence texts into the trained entity recognition model to obtain an entity recognition result. The recognition accuracy of specific types of entities in the threat intelligence field can be improved.
Owner:CAPITAL NORMAL UNIVERSITY +1

Manufacturing method of hermetic container

A manufacturing method of a high-reliability hermetic container includes an assembling step of arranging, between first and second glass substrates, a sealing material including first and second straight line portions stretching in different directions and a coupling portion connecting these straight line portions, with a viscosity of the sealing material having a negative temperature coefficient, and a scanning sealing step of performing scanning to the first straight line portion and the coupling portion while irradiating local heating light at least once. Scanning to the second straight line portion and the coupling portion is performed while irradiating the local heating light at least once, and the assembling step further forms at least a part of the sealing material at the coupling portion with a film thickness thinner than the sealing material in a region adjacent to the coupling portion of the first straight line portion.
Owner:CANON KK

Short-distance optical amplification module, amplification method and amplification system

Disclosed are a short-distance optical amplification module, method and system. The module comprises a reflective type polarizing plate, a first phase delay plate, an imaging lens, a second phase delay plate and an absorptive type polarizing plate, arranged successively. The reflective type polarizing plate is arranged on a transmission path of an optical image. The first phase delay plate is arranged on the transmission path of the optical image passing through the reflective delay plate. The imaging lens is arranged on the transmission path of the optical image. The second phase delay plate is configured for converting a polarization direction of the optical image from an elliptical or circular polarization direction to a second linear polarization direction. The absorptive type polarizing plate is arranged on one side of the second phase delay plate that faces away from the imaging lens.
Owner:SHENZHEN DLODLO NEW TECHNOLOGY CO LTD

Method and a device for transmitting and receiving signals with modulation compression

A communications device includes a transmitter, a transmission processing device, a receiver, and a reception processing device. The transmission processing device assigns signal-space points within an I / Q signal space to digital signals, which include data values. The reception processing device assigns data values to signal-space points. The transmitter generates a transmission signal from signal-space points to be transmitted. The receiver determines received signal-space points from a received signal. The individual transmitted and received signal-space points provide in each case a smaller spacing distance from adjacent signal-space points than from the origin of the signal space.
Owner:ROHDE & SCHWARZ GMBH & CO KG

Fertilizing method for apricot trees

InactiveCN104956829AShorten time and space distanceGood benefitFertilising methodsFertilizerRoot system
The invention discloses a fertilizing method for apricot trees. The fertilizing method comprises the following steps: (1) measuring soil nutrients, namely, arranging a plurality of sampling points under a plurality of fruit trees in an orchard, taking soil samples at depths of 0-20cm and 20-80cm from any sampling point, mixing the soil samples at the same sampling layer of the same fruit tree, airing, measuring organic matters, total nitrogen, rapidly available nitrogen, available phosphorus, rapidly available potassium, exchange calcium, exchange magnesium, available sulfur, zinc, iron, manganese, copper and boron in the sample, and carrying out statistic analysis on dependency of data of the soil samples at the two layers; and (2) according to the statistic analysis result on dependency of data of the soil samples at the two layers, by taking nutrients having significant differences as base fertilizers, applying the fertilizers with alternative deep placement and shallow placement every other year, dividing nutrients without significant differences as base fertilizers and additional fertilizers, and fertilizing by adopting a manner of combining deep placement of the base fertilizers and shallow placement of the additional fertilizers. According to the fertilizing method provided by the invention, by considering movement abilities of different nutrients, the time and spatial distances from application of the nutrients to nutrient absorption of roots are shortened, the benefits are obvious, and the operation is simple.
Owner:BEIJING FORESTRY UNIVERSITY +2

Plastic thin film opening and flattening device and plastic thin film online side cutting and flattening method

ActiveCN111470358AAvoid secondary processingLabor saving and time saving production costFlat articlesWebs handlingThin membraneEngineering
The invention discloses a plastic thin film opening and flattening device and a plastic thin film online side cutting and flattening method, and relates to the technical field of plastic thin film production processing. The plastic thin film opening and flattening device comprises a hopper, an extruder, a mould, a herringbone clamp plate, a traction roller, a horizontal cutting frame, a guiding roller, a triangular frame body, traction rollers, a horizontal cutting frame, a guiding roller, a triangular frame body, involute guide rollers and a coiling device. A horizontal side cutting mechanismis arranged on an operation platform of the traction roller, and comprises a horizontal slide rod and a tool rest sliding chute with a cutter; the cutter is used for unilaterally cutting a cylindrical film extruded through the traction roller into a single cutting film; after passing through the guiding roller, the single cutting film enters the involute guide rollers under the guiding roller soas to form a thin film through the involute guide rollers; and a thin film opening and flattening mechanism is connected under the involute guide rollers. According to the plastic thin film opening and flattening device and the plastic thin film online side cutting and flattening method provided by the invention, in the process of opening and flattening a thin film, the friction forces of a film surface and arc-shaped opening rods are uniform, the thin film is not easy to scratch, and the occurrence of the phenomenon of gauffer and the problem of multiple creases caused by the imbalance of friction forces of various points of a middle cutting type trapezoid display rack are avoided.
Owner:青岛海益塑业有限责任公司

Deposit removing device

A deposit removing device capable of efficiently removing deposit on a plate-like member such as a metal plate or resin plate by reducing a spacing distance between the plate-like member and an injection nozzle, and also capable of coping with the removal of deposit on the plate-like member rolled or conveyed at a high speed. This deposit removing device removes the deposit adhered to the plate-like member (T) by jetting compressed air from at least one jetting hole (101) of a nozzle body (100) in which the at least one jetting hole (101) is formed. This device is configured so that the nozzle body (100) is supported so as to be movable in a direction (W1) substantially perpendicular to the surfaces (T1 and T2) of the plate-like member (T).
Owner:KOBE STEEL LTD

Single station garment standing collar steaming and ironing machine

The invention discloses a single-step standing collar steamer, which includes a frame, a lower die fixed on the frame, an upper die, a pushing die with a movable cylinder, an electric control box and a foot switch electrically connected with the electric control. The invention is characterized in that the upper die is arranged on an upper die frame, the upper die frame is provided with a linear guide rail and is connected with a lifting cylinder, an assistant slider of the linear guide rail is arranged on the frame, a chute is provided between the assistant guide rail of the linear guide rail and the slider to provide a moving orbit for the lifting cylinder; the upper die is further provided with a safety rod and is connected with the safety rod connecting piece via bolts. Through the special upper die connecting and driving design, the machine of the invention has more concordant body and simpler structure than the advanced single-step standing collar steamer.
Owner:上海威士机械科技有限公司 +1

Stator for motor and method for manufacturing same

The invention relates to a stator for a motor and a method for manufacturing the same. The stator herein comprises: a stator core (2) which has an iron core connection portion (21) which connects more than two separation iron cores (20), an insulation piece (5) which is integratedly formed with the stator core (2) through an insert molding, wherein the separation iron core (20) has a yoke part (2y) which extends along a circumferential direction and a gear portion (2t) which extends radially from the yoke part (2y) o the inner side. The insulation piece (5) includes a gear insulation portion (53) which covers a coil mounting surface (2w) of the gear portion (2t) and a yoke insulation portion (51) which covers an upper surface of the yoke portion (2y) and an upper surface of the iron core connection portion (21). Therefore, the stator core (2) is not exposed from the upper surface of the yoke portion (2y) or from the upper surface of the iron core connection portion (21), which can prevent contact between a connection wire (4) and the stator core (2).
Owner:NIDEC TECHNO MOTOR CORP

Compact circular waveguide TM01-TE01 mode converter

The invention discloses a compact circular waveguide TM01-TE01 mode converter, and aims to provide the mode converter from a circular waveguide TM01 mode to a circular waveguide TE01 mode, wherein the mode converter has a compact structure, and the input and the output of the mode converter are on the same straight line. The mode converter mainly comprises an input circular waveguide (1) for propagating the TM01 mode, an output circular waveguide (5) for propagating the TE01 mode, N rectangular E-surface 90-degree bending waveguides (2), N rectangular 90-degree twisted waveguides (3) and N rectangular H-surface 90-degree bending waveguides (4), wherein N is an even number greater than 3. According to the mode converter, the two circular waveguides for propagating the TM01 mode and the TE01 mode separately are coaxially arranged; the adjacent one surfaces on the inner sides of the two circular waveguides are short-circuit surfaces; the two circular waveguides are in coupling connection through a series of rectangular waveguide assemblies with even-number columns, wherein the rectangular waveguide assemblies are connected in sequence, and the side faces of the rectangular waveguide assemblies are arranged at the equal intervals; the mode converter is compact in structure, small in size and light in weight; the mode converter adopts an axial symmetrical structure, and the input and the output are arranged on the same axial line, so that the mode purity of the output TE01 mode is improved.
Owner:XIAN INSTITUE OF SPACE RADIO TECH

Primers, probe, kit and detection method for type II nucleic acid quantitative detection of herpes simplex virus

InactiveCN103805714AEfficient removalHas the effect of nucleic acid extraction and enrichmentMicrobiological testing/measurementMicroorganism based processesFluorescenceSignal-to-noise ratio
The invention provides primers, a probe, a kit and a detection method for type II nucleic acid quantitative detection of herpes simplex virusherpes simplex virus. The primers are as shown in the sequences of SEQ ID NO: 1 and SEQ ID NO: 2; the probe is as shown in the sequence of SEQ ID NO: 4, and a reporter fluorescent group and a non-quenching fluorescent group are marked at the two ends of the probe, respectively; the kit comprises the primers and the probe. The primers, the probe and the kit thereof are low in fluorescent background value, high in signal-to-noise ratio and high in detection sensitivity when used for detecting type II nucleic acid quantitation of the herpes simplex virus.
Owner:厦门安普利生物工程有限公司

Modularized real-time intelligent navigation system

The invention discloses a modularized real-time intelligent navigation system which is capable of grouping exhibited articles in one exhibition and setting an individual navigation subsystem for each group of exhibited articles in the exhibition. Each navigation module consists of a signboard recording names and basic information, a mobile explaining device recording audio explaining content and an information terminal storing comprehensive information. Uniform visual symbolic codes are used in the navigation modules, symbolic correlation is established on software interfaces from the signboard to the mobile explaining device and the information terminal, and visitors can complete operation visually and easily. The information terminals of the different navigation module are connected through an internal network, and a background server is set for providing data support to the different information terminals and monitor and manage the same. Besides, explaining contents in different navigation modules on the mobile explaining modules are called by the radiofrequency identification technology.
Owner:段彬

Multifunctional electroplating device

The invention discloses a multifunctional electroplating device. The multifunctional electroplating device comprises an electroplating tank; the electroplating tank is provided with a movable door capable of being closed through pushing; the electroplating tank is internally provided with a left half tank body and a right half tank body; the bottom of the left half tank body is provided with a slide sleeve body, and the bottom end of the slide sleeve body slidably sleeves the electroplating tank; a screw rod used for driving the slide sleeve body to slide leftwards and rightwards penetrates into the slide sleeve body in a sleeved mode and is connected with a servo motor, and the servo motor is fixedly installed on the electroplating tank; the right half tank body is fixedly installed at the bottom of the electroplating tank, the bottom of the right half tank body is provided with a groove, and the bottom of the left half tank body is slidably connected to the interior of the groove formed in the bottom of the right half tank body in a sleeved mode; the left half tank body and the right half tank body are both provided with anode materials, and the top end of the left half tank bodyand the top end of the right half tank body are both provided with alignment assemblies; and the alignment assemblies are symmetrical and are provided with cathode points for making contact with long-rod workpieces. The multifunctional electroplating device has the advantages of being safe in operation, good in electroplating effect, high in working efficiency and adaptability and the like.
Owner:CHANGDE LIANJIA MACHINERY

Zoom lens and imaging apparatus

InactiveUS20140111870A1Shorten close distance distanceAvoid interferenceLensNegative powerOptoelectronics
A zoom lens includes: a first lens group having a negative power; and a second lens group having a refractive power, in this order from an object side. The zoom lens satisfies the following conditional formulae: 1.0<D2g / D1g<1.6, 0.08<D2t / ft<0.19, 1.15≦ft / |f1|<1.8, and 1.1<ft / f2<1.9, wherein D1g is the distance from a most object side lens surface to a most image side lens surface within the first group, D2g and D2t are the distance from a most object side lens surface to a most image side lens surface within the second group and the distance between an object side partial second lens group and an image side partial second lens group when focused on infinity at a telephoto end, respectively, ft is the focal length of the entire system at the telephoto end, and f1 and f2 are the focal lengths of the first group and the second group, respectively.
Owner:FUJIFILM CORP

Liquid crystal display device

A liquid crystal display device includes first to fourth pixel electrodes neighbored each other in a first direction, a common electrode at least partially overlapping the first to fourth pixel electrodes, and a first data line and a second data line extended in a second direction different from the first direction, and neighbored each other where the first data line is interposed between the first pixel electrode and the second pixel electrode, the second data line is interposed between the third pixel electrode and the fourth pixel electrode, and at least one slit defined in the common electrode is interposed between the second pixel electrode and the third pixel electrode.
Owner:SAMSUNG DISPLAY CO LTD

Method and a device for transmitting and receiving signals with modulation compression

A communications device includes a transmitter, a transmission processing device, a receiver, and a reception processing device. The transmission processing device assigns signal-space points within an I / Q signal space to digital signals, which include data values. The reception processing device assigns data values to signal-space points. The transmitter generates a transmission signal from signal-space points to be transmitted. The receiver determines received signal-space points from a received signal. The individual transmitted and received signal-space points provide in each case a smaller spacing distance from adjacent signal-space points than from the origin of the signal space.
Owner:ROHDE & SCHWARZ GMBH & CO KG

Gas concentration and sensing integrated device and preparation method thereof

The invention discloses a gas concentration and sensing integrated device and a preparation method thereof. The integrated device comprises a metal-oxide gas sensor, an annular insulating layer, an annular platinum micro-heater, an annular insulating layer and an annular gas concentrator which are successively placed on a silicon wafer and are connected with an electrode, a mesoporous heat-insulation layer covers the silicon wafer, the width of the annular platinum micro-heater is less than or equal to 1 mu m, the thickness is 200-500 nm, and the electrode is electrically connected with the platinum micro-heater and a power supply separately. The method comprises the following steps: repeatedly coating the silicon wafer covered with the mesoporous heat-insulation layer with an electron beam resist; drawing a graph of a corresponding device on the electron beam resist through an electron beam exposure method; and after sputtering or evaporating the corresponding device on the graph, growing the gas concentrator on the annular insulating layer to obtain a target product. The gas concentration and sensing integrated device has the advantages of compact structure, low power consumption, high detection limit, instantaneity and convenience, is quite easily applied to high-sensitivity detection on gas widely, and thus has a wide application prospect in the fields of wearable or embeddable intelligent terminals and the like.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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