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261results about How to "Achieve shaping" patented technology

Computer-aided three-dimensional bending of spinal rod implants, other surgical implants and other articles, systems for three-dimensional shaping, and apparatuses therefor

InactiveUS20050262911A1Satisfactory reproductionGlobal accuracyOsteosynthesis devicesImplantable rodComputer aid
An implantable rod can be bent three-dimensionally in an automated system, which is especially useful for pre-surgical formation of implantable spinal rods. When local and / or global feedback processing accompanies a series of shaping steps automatically imposed on a rod or other article being shaped into three-dimensional form, formation time may be expedited compared to manual creation, and shapes difficult or impractical to create manually may be constructed simply.
Owner:VIRGINIA POLYTECHNIC INSTITUTE AND STATE UNIVERSITY +1

Stack shaping machine

The invention relates to a stack shaping machine, which shapes a stack shape in a stacking operation process of a manipulator. The stack shaping machine comprises a rack and is characterized in that: the rack is provided with a layering device and a shaping device, wherein the layering device is used for undertaking materials and stacking a single-layer material on a material stack; the shaping device is used for shaping the single-layer material; and a lifting table device which is used for undertaking the single-layer material transferred by the layering device and driving the overall material stack to lift is arranged in the rack. The stack shaping machine has a simple, compact and reasonable structure; the layering device is added, so that one-by-one stacking of the manipulator is converted into layer-by-layer stacking, which effectively overcomes the defects that the stack shape of the materials stacked by using the manipulator is not good and greatly increases the adaptability of manipulator stacking; the shaping device extrudes on the periphery the material stack in order to eliminate gaps among material bags and realize the shaping on the periphery of each layer; the lifting table device jacks the material stack to press to the layering device to make the stack top flat and solid, so that the shaping of the stack top is realized; and a sliding plate is arranged in an air-cushion type, which reduces the friction of the materials when moving on the sliding plate.
Owner:无锡力马化工机械有限公司

Double-free-form-surface lens for laser beam shaping and design method thereof

The invention discloses a design method of a double-free-form-surface lens for laser beam shaping and belongs to the technical field of non-imaging optics and laser beam shaping. An initial structure of the double-free-form-surface lens is set according to design requirements, the double-free-form-surface lens meeting lighting requirements is designed according to the relation of energy conservation, the refraction law and the optical path and with the assistance of a computer, and therefore after incident laser beams pass through the lens and are deflected, preset strength distribution and preset phase distribution are generated. The double-free-form-surface lens comprises double free-form surfaces, namely the front surface and the rear surface, and in addition, the front free-form surface and the rear free-form surface are obtained through surface fitting discrete data points. The invention further discloses the double-free-form-surface lens for laser beam shaping based on the method. A continuous free-form-surface form is obtained, the surfaces can be processed, regulating of strength distribution and phase distribution of the laser beams can be achieved at the same time, the control capability is strong, and the design efficiency is high.
Owner:ZHEJIANG UNIV

Hydraulic pipeline inner butt-jointing device

The invention relates to a hydraulic type aligning device inside a pipeline, which is used for the welding construction of a long-distance oil and gas transporting pipeline and mainly comprises a shell, a hydraulic power station, a sliding mechanism, an expanding mechanism, a running mechanism and a straightening mechanism. Furthermore, the hydraulic type aligning device inside a pipeline is characterized in that a jacket of a hydraulic station is internally fixed with the hydraulic power station, a jacket of a liquid tank is internally provided with a hydraulic cylinder, a main shaft is sleeved with a rear sliding sleeve and a front sliding sleeve, and the other end of a traction frame is fixed to the end part of the rear sliding sleeve. Furthermore, the rear sliding sleeve is driven by the hydraulic cylinder to reciprocate on the main shaft, each sliding sleeve adopts an articulated axle fixed with two main top plates and a parallel top plate, an isoceles triangle is formed by the two main top plates, and the parallel top plate is fixed with two support pillars and a jacking. The invention can realize pipe opening alignment, stable and reliable positioning, large pushing force and pipe opening shaping, and can slightly adjust the lifting height and enhance the centric precision of fitted up pipe openings. In addition, the invention has light weight, low price and simple structure.
Owner:冯岩

Measuring method for pulse pre-pump rayleigh BOTDA (Brilouin optical time domain analysis) temperature and strain

Provided is a measuring method for pulse pre-pump rayleigh BOTDA (Brillouin optical time domain analysis) temperature and strain. Step pulsed light is injected into a sensing optical fiber, backward rayleigh scattering generated by a pre-pump pulsed light 1-order sideband serves as detection light to generate stimulated Brillouin scattering effect with sensing pulsed light in opposite-direction transmission, simultaneously sensing pulse and spontaneous Brillouin scattering signals generated by pre-pump pulsed light 0-order base band preexciting sound saves generate the stimulated Brillouin scattering effect, then the detection light returning to an incidence end and carrying stimulated Brillouin scattering information is utilized to obtain Brillouin frequency shift of each point of the optical fiber, and measurement of the temperature and the strain along the optical fiber is achieved according to the relations between the Brillouin frequency shift and the temperature / strain. According to the measuring method, the influence of non-local effect on system performance is greatly reduced, the conflict between the spatial resolution and measurement accuracy is effectively overcome, and the spatial resolution and the measurement accuracy are improved simultaneously.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

New method and device for arbitrary beam shaping

ActiveCN101614876AShaping method is simple and easySimple compositionOptical elementsShaped beamWavefront
The invention relates to a new method and device for arbitrary beam shaping. The method can be used for shaping the light intensity of incident beam into required distribution and can effectively compensate beam wavefront phase change caused by light intensity shaping and an optical system self. The invention adopts a double shaping mirror and a double image senor combining an SPGD algorithm realizing device to form an adaptive closed loop shaping system, the image sensor is in charge of detecting far field and near field light intensity distribution information of shaped beam in real time, and an algorithm controller is in charge of feedback control on the shaping mirror, so as to correct light intensity distribution and phase distribution of the incident beam. The invention has the advantages of high efficiency and convenient use.
Owner:NAT UNIV OF DEFENSE TECH

Device for realizing light beam automatic shaping using shape changing lens

The device is composed of laser, telescope, deformation lens, CCD camera, D / A conversion card, high voltage amplifier, variable density attenuation disc, main control computer, image collection card, focusing lens, and genetic control algorithm. Using genetic algorithm to control the deformation lens, changing phase distribution of near field wave surface of laser beam, the invention reaches the purpose of changing light spot form in far field. The invention can realizes shaping laser beam without need of calculating relational expression between shape of light spot in far field and phase in near field. Gauss laser beam can be shaped to super Gauss beam, quadrate beam etc needed in practical application. The invention also can implement correcting static and quasi-static aberration included in laser beam effectively. Features are: simple structure, good generality, and easy of implementation. The invention is applicable to situation requiring specific shape of laser beam.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI

Light shaping apparatus and laser light source

The invention provides a light shaping apparatus which is used to focus incident light on a specific focusing plane and form a light spot with a specific shape. The apparatus comprises a focusing part and a cambered surface lens array located between the focusing part and a light path of the focusing plane. The cambered surface lens array comprises a plurality of cambered surface lens units. The cambered surface lens unit is used to project the light which is incident into the cambered surface lens and is emitted from the focusing part on the focusing plane so as to form the sub-light-spot corresponding to the cambered surface lens unit. The shape of the sub-light-spot is similar to the shape of the corresponding cambered surface lens unit. The invention also provides a laser light source. The laser light source comprises the light shaping apparatus so as to focus the laser on the specific focusing plane and form the light spot with the specific shape. In the light shaping apparatus and the laser light source of the invention, the cambered surface lens array is used to make the light which is emitted from the focusing part form the light spot with the specific shape on the focusing plane respectively so as to realize the shaping of the light spot.
Owner:APPOTRONICS CORP LTD

Lithium battery cathode assembling machine

The invention discloses a lithium battery cathode assembling machine which comprises a working platform, wherein a steel shell feeding device, a lithium sheet feeding and shearing device, a lithium sheet transferring device, a cathode shaping device, a steel shell transferring device and a cathode rolling device are sequentially arranged on the working platform, and all the devices are connected with a main control circuit. The invention solves the problems of low speed and low efficiency for manually assembling the cathode of a lithium battery, has the advantages of good assembling quality and high efficiency, improves the operating environment, and saves the cost. The lithium battery cathode assembling machine has a simple structure; when the cathode is assembled, the lithium sheet is firstly fed, and then sheared; the sheared lithium sheet is fed into a shaping working station, and subjected to low shaping, left and right shaping and upper shaping, and then loaded into a steel shell; and the steel shell loaded with the cathode is fed to a rolling position for rolling, and then the steel shell subjected to the rolling is conveyed and discharged, therefore, the automatic feeding,shaping and assembling of the lithium battery cathode are realized.
Owner:GUANGDONG LYRIC ROBOT INTELLIGENT AUTOMATION CO LTD

Arc Welding Initiation System and Method

A method and apparatus for controlling arc shielding gas during an arc welding operation is disclosed. The method may include the steps of actuating a first valve connected to an arc initiation source of gas to selectively allow arc initiation gas to flow through a mixing chamber; initiating an arc; actuating a second valve connected to a primary shielding source of gas to selectively allow primary shielding gas to flow through the mixing chamber; actuating the first valve to reduce, if needed, the arc initiation gas flow from the arc initiation source of gas; and continuing with the arc welding operation. The arc welding operation may also include actuating the first valve to cause the arc welding operation to operate in a different metal transfer mode when it is desirable, or when the arc welding operation is nearing completion.
Owner:GM GLOBAL TECH OPERATIONS LLC

Device for shaping and collimating elliptic laser spots of semiconductor lasers

ActiveCN102914872AAchieve shapingAchieve collimationLensGalvanometerErbium lasers
The invention discloses a device for shaping and collimating elliptic laser spots of semiconductor lasers, which comprises at least a non-rotational symmetric lens arranged on the propagation path of laser beams emitted by a semiconductor laser, the lens comprises a first surface and a second surface, the first surface is used for realizing the purpose of collimating laser beams propagated in the direction of a fast axis, and the second surface is used for carrying out beam expansion and collimation on laser beams propagated in the direction of a slow axis. The device disclosed by the invention has the advantages of less adopted optical elements, small size and capability of shaping and collimating elliptic laser spots, thereby fully meeting the application requirements of micro-projector optical systems of MEMS (micro-electro-mechanical system) galvanometers.
Owner:SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI

Flat-top light beam shaping control method for achieving abrupt edge and low light-intensity variation and shaping device thereof

InactiveCN102540474AAchieve shapingShaping real-time adaptiveOptical elementsLight beamOptoelectronics
The invention discloses a flat-top light beam shaping control method for achieving an abrupt edge and low light-intensity variation and a shaping device thereof, and the flat-top light beam shaping control method and the shaping device relate to a flat-top light beam shaping device for achieving the abrupt edge and the low light-intensity variation, and further relate to a shaping control method, so as to solve the problems in the prior art that a position cannot be flexibly set to shape a light beam, the shape and the caliber of the shaped light beam cannot be changed flexibly, the edge is not abrupt, and further, the flat top light-intensity variation of the light beam is large. A lens in the shaping device provided by the invention is positioned between a surface where an optical phase array is positioned and an output surface; the light beam passes through the optical phase array, and then goes through a Fourier transform lens, so that the light beam is shaped; a light field is obtained at the output surface; and an intensity distribution collecting module collects the intensity distribution of the light beam of the shaped light field of the output surface and outputs the intensity distribution of the light beam to a processor module, and judges whether to adjust the phase of the optical phase array or not through calculating an RMSE (root-mean-square error ) value. By using the device provided by the invention, the anticipative shaping of the light beam is achieved by the shaping control method. The flat-top light beam shaping control method and the shaping device are applied to the technical field of diffraction optics and laser shaping.
Owner:HARBIN INST OF TECH

Composite shaping method of wide magnesium alloy thin plates

The invention discloses a composite shaping method of wide magnesium alloy thin plates. The composite shaping method includes the steps of (1) placing a base plate with the smooth and flat surface on a material disc of a resistance furnace, then stacking the one to five wide magnesium alloy thin plates with the thickness ranging from 1.0 mm to 3.2 mm and the width ranging from 750 mm to 1500 mm on the base plate, then enabling a steel plate with the smooth and flat surface to serve as a balance weight pressing plate, placing the steel plate on the stacked wide magnesium alloy thin plate on the uppermost layer, finally heating the resistance furnace, and pushing the material disc into the resistance furnace to carry out annealing pressing shaping after the temperature of the resistance furnace reaches the annealing temperature, and (2) straightening the wide magnesium alloy thin plates after the annealing pressing shaping. According to the composite shaping method, annealing pressing shaping is carried out in the mode that a balance weight is applied in the annealing process, composite shaping is carried out in cooperation with multiple times of roller type straightening, the unevenness of the shaped wide magnesium alloy thin plates is smaller than 3 mm / m and remarkably better than the unevenness required by high-accuracy-level plates in the national standard, and the wide thin plates beyond the width standard of the national standard are excellently shaped.
Owner:WESTERN TITANIUM TECH

Method for manufacture of fine line circuitry

The present invention relates to a method for manufacture of fine line circuitry in the manufacture of printed circuit boards, IC substrates and the like. The method utilizes a first conductive layer on the smooth surface of a build-up layer and a second conductive layer selected from electrically conductive polymers, colloidal noble metals and electrically conductive carbon particles on the roughened walls of at least one opening which are formed after depositing the first conductive layer.
Owner:ATOTECH DEUT GMBH

Shaping device for storage battery electrode group

The invention discloses a shaping device for a storage battery electrode group and belongs to the field of battery processing. An existing shaping device can achieve functions through two different drivers. The shaping device disclosed by the invention comprises a shaping part and a driving part, wherein the shaping part comprises a fixed frame, at least one pair of rotating bars is rotatably connected to the fixed frame side by side, each rotating bar comprises a driving arm at the upper end and a driven arm at the lower end, the driven arm is connected with a shaping plate, the driving part comprises a guide plate and a driving component for driving the guide plate to ascend and descend, at least one pair of guide grooves corresponding to the rotating bars is formed in the guide plate, and the driving arms are connected with the guide grooves through linkage levers. In a descending process of the guide plate, the linkage levers move along the guide grooves to drive the adjacent rotating bars to rotate, the driving arms relatively keep away to enable the driven arms at the lower ends to be close to one another, and the side wall of an electrode lug is clamped by the shaping plate; and in an ascending process of the guide plate, the rotating bars are driven to restore, the driven arms are relatively separated, and the electrode lug is loosened by the shaping plate.
Owner:ZHEJIANG HAIYUE AUTOMATIC MACHINERY

Central air conditioner load-reduction temperature-adjusting method based on equal comfort level loss principle

The invention discloses a central air conditioner load-reduction temperature-adjusting method based on an equal comfort level loss principle. The central air conditioner load-reduction temperature-adjusting method includes the steps that on the basis of a central air conditioner model, terminal set temperature values of all rooms and indoor cold load conditions of all rooms in a commercial building are considered; according to the principle that human body comfort level loss values of all rooms are equal, the load reduction lasting time of all rooms is obtained, then temperature adjustment control over all rooms is carried out, and load reduction of a central system is achieved. According to the central air conditioner load-reduction temperature-adjusting method, the user comfort level is sufficiently considered, the commercial building participates in demand responses to achieve load reduction, and the reasonability and the scientificity of a load reduction scheme are improved.
Owner:SHENZHEN POWER SUPPLY BUREAU +1

Full-automatic bagging system

The invention belongs to the technical field of packing equipment, and particularly discloses a full-automatic bagging system. The full-automatic bagging system comprises a bag supply system, a bag suction system, a filling system, an automatic labeling system and a conveying system, which are connected in sequence, wherein the bag supply system comprises a bag supply platform and a packing bag stripping device which is arranged on the bag supply platform; the bag suction system comprises a packing bag suction device and a faulted bag elimination device; the filling system comprises a bag opening device, a filling device and a packing bag shaping device; the automatic labeling system comprises a label suction mechanism and a label supply mechanism; and the conveying system comprises an automatic packing bag leading-in device, a load balance compensation conveyor and an automatic bag sewing and pushing device. The full-automatic bagging system is reasonable in structure, high in degree of automation, and high in production efficiency.
Owner:河南济开电器有限公司

Multi-subchannel gain flat device and method

ActiveCN102932065AAchieve shapingEnables automatic and continuous monitoring of gainElectromagnetic transmissionFrequency spectrumAudio power amplifier
The invention provides a multi-subchannel gain flat device and a method and relates to adjustment of subchannel gain in an optical communication system. The multi-subchannel gain flat device and the method comprise a wavelength choice switch, an optical amplifier and an optical splitter. The multi-subchannel gain flat device and the method further comprise an adjustable filter, an optical power detector and a control unit, and all parts form a monitoring loop of multi-subchannel frequency spectrum. The control unit controls the wavelength choice switch and the adjustable filter, an input signal enters into the wavelength choice switch and is output by the wavelength choice switch, the input signal enters into the optical splitter through the optical amplifier, the optical splitter splits signal light of part of power and reflects and the signal light is sent into the adjustable filter, the adjustable filter filters the signal light of par of subchannels and the signal light is input into an optical power detector, the optical power detector inputs a detecting result into the control unit, the control unit calculates decrement which corresponds to different subchannels and controls the wavelength choice switch to achieve gain flatness. A spectrometer is not used so as to reduce hardware cost, achieve automatic monitoring of multi-subchannel gain, and be high in equipment integration level and beneficial to being adopted in a large scale.
Owner:WUHAN POST & TELECOMM RES INST CO LTD

Transmission type laser beam shaping system

The invention discloses a transmission type laser beam shaping system, which comprises a transmission type phase modulation mirror, a spatial filter and a transmission type collimator, wherein an incident surface of the transmission type phase modulation mirror consists of concave and convex spaced concentric toroidal surfaces with different heights, the adjacent convex surfaces and concave surfaces correspond to adjacent peaks of a laser beam, and an emergent surface of the laser is a concave surface; the spatial filter is used for selecting modes of an output beam of the transmission type phase modulation mirror, so that the central main peak beam of the output beam can pass through, and secondary small peaks are reflected and absorbed; and the transmission type collimator is used for compressing a divergence angle of the selected main peak beam, so as to obtain single-mode laser with small divergence angle and low energy loss. The transmission type laser beam shaping system provided by the invention has the advantages of simple structure and convenient adjustment, is high in power of the fundamental mode of the obtained beam, and can be applied to a variety of laser processing processes such as laser cutting, welding and punching.
Owner:HUAZHONG UNIV OF SCI & TECH

Device for repairing defects of flexible OLED display device

The invention relates to a device for repairing defects of a flexible OLED display device. The device comprises a display panel alignment mechanism, a movement mechanism, a laser repairing mechanism,an OLED lighting mechanism and a control mechanism, the display panel alignment mechanism is provided with a UVW console used for adjusting an alignment angle; the OLED lighting mechanism is providedwith a lighting control unit and an air suction needle pressing unit used for adsorbing and fixing a to-be-repaired workpiece to, the lighting control unit is electrically connected with the air suction needle pressing unit, and the air suction needle pressing unit is fixed to the UVW console; the movement mechanism is provided with a displacement table movement unit and a gantry movement unit, the laser repairing mechanism is arranged on a gantry movement unit, and the UVW console is arranged on the displacement table movement unit. A placing position and angle of the to-be-repaired workpieceare accurately controlled through the movement mechanism and the display panel alignment mechanism, the defect positioning and repairing precision of the to-be-repaired workpiece is better, defects can be completely repaired, and the repairing efficiency and the repairing quality are improved.
Owner:BEIJING C&W TECH DEV

Bridge strain monitoring system and method based on WIFI communication technology

The invention discloses a bridge strain monitoring system and method based on WIFI communication technology. The system comprises a string wire sensor arranged on the surface of a key position of a bridge, WIFI vibration wire collectors, a WIFI router and upper computer collection software, wherein each WIFI vibration wire collector comprises a controller, a power supply module, a high-voltage booster circuit, a signal conditioning circuit, a high-voltage switch and a WIFI wireless module; the WIFI vibration wire collectors are connected at two ends of the string wire sensor through leads, thestring wire sensor oscillates under high voltage excitation, and frequency signals are output to the WIFI vibration wire collectors; and the WIFI vibration wire collectors are communicated with the upper computer collection software through a wireless network provided by the WIFI router, and a TCP connection is established through the WIFI wireless module so as to automatically collect the straindata of a bridge structure in real time. The bridge strain monitoring system and method disclosed by the invention have the advantages that a WIFI mature protocol is utilized for avoiding self-designof a networking protocol, and a TCP / IP is adopted to ensure reliable communication processes.
Owner:SOUTH CHINA UNIV OF TECH

Crystal optical fiber solition type full light regenerator and its light signal regenerating method

InactiveCN1715993ANon-linear length shorteningRealize timed judgmentCoupling light guidesElectromagnetic transmissionFiberBand-pass filter
The crystal optical fiber soliton type full light regenerator and its light signal regenerating method is used in the light signal transmission for the reforming and reusing of light signal. Of the regenerator, the light shunting coupler has two, one main and one auxiliary, output ports, the main output port is connected to the photon crystal fiber, the photon crystal fiber has output is connected to the light amplitude modulator, the light amplitude modulator has output connected to the light band-pass filter, and the light band-pass filter has output port (OUT) as the output port of the light regenerator. The light shunting coupler has auxiliary output port connected to the output of the light detector, the light detector has output connected to a RF filter, the RF filter has output connected to the input of phase shifter, and the phase shifter has output connected to the light amplitude modulator, to constitute the crystal optical fiber soliton type full light regenerator.
Owner:NANJING UNIV OF POSTS & TELECOMM

Port forming machine

The invention aims to provide a port forming machine. The port forming machine is characterized in that an inner telescopic device and an outer telescopic device are arranged on the same axis; the inner telescopic device is provided with an inner mould composed of a plurality of inner petal mould bodies at an opening fastening portion, and the inner mould realizes the expansion and contracting motions through an inner telescopic rod; and the outer telescopic device is provided with an outer mould composed of a plurality of outer petal mould bodies at the opening fastening portion and comprises an outer mould thruster, and the outer mould moves in the radial direction through the outer mould thruster to complete expansion and contracting motions. The design key points of the technical scheme lie in that the inner mould and the outer mould move in the same radial plane at the opening fastening portion, the inner mould and the outer mould are combined through a split petal structure, and a weaving component is fixed to a port of a corrugated pipe component through an end cap within a certain diameter range. The power of the inner mould and the outer mould is from driving devices moving on the same axis, and the moving directions of the inner mould and the outer mould are switched through an inner mould taper rod and the outer mould thruster.
Owner:NINGBO KINROM IND

Device for processing nonlinear information of magnet adjustable optical fiber

InactiveCN102075249AEnables magnetically tunable handlingAchieve shapingFibre transmissionNon-linear opticsNonlinear fiberMagneto optical
The invention relates to a device for processing nonlinear information of a magnet adjustable optical fiber, comprising an optical information input transforming unit and an optical information output transforming unit. The device is characterized in that a magneto-optical nonlinear fiber unit is connected between the optical information input transforming unit and the optical information output transforming unit, wherein the magneto-optical nonlinear fiber unit comprises a magneto-optical nonlinear fiber and a magnet adjustable control module, the magneto-optical nonlinear fiber is wound round the magnet adjustable control module and is influenced by a magnetic field generated by the magnet adjustable control module, so as to control the transmission characteristics of the guided optical waves in the magneto-optical nonlinear fiber. The device provided by the invention has the following beneficial effects: the magneto-optical nonlinear fiber can be used for processing the optical information and the magnetic field sensor information.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Electromagnetic shape righting device and shape righting method

ActiveCN112275887AAchieve shapingOrthopedic realizationShaping toolsMetal formingEddy current
The invention discloses an electromagnetic shape righting device and a shape righting method, and belong to the technical field of metal forming and manufacturing. The electromagnetic shape righting device comprise a uniform pressure driving coil, a magnetic field shaper, a conductive channel and a mold; the uniform pressure driving coil is arranged in the conductive channel; the conductive channel and a to-be-shaped workpiece form a conductive loop; the magnetic field shaper is arranged between the uniform pressure driving coil and the to-be-shaped workpiece; the uniform pressure driving coilgenerates a pulsed magnetic field around the uniform pressure driving coil through pulse current discharge, and the pulsed magnetic field generates induced eddy current on the surface of the magneticfield shaper; the magnetic field shaper is matched with the uniform pressure driving coil to generate induction current in the conductive loop, and the induction current generates pulse electromagnetic force on a to-be-formed area of the to-be-shaped workpiece; and the to-be-formed area of the to-be-shaped workpiece deforms to the mold under the action of the pulse electromagnetic force. According to the electromagnetic shape righting device, the shape righting or multiple forming processes of the workpiece can be flexibly and accurately regulated and controlled through the optimal design ofthe magnetic field shaper, and the design difficulty and the manufacturing cost of a forming device are effectively reduced.
Owner:HUAZHONG UNIV OF SCI & TECH

Chirp laser pulse spectrum shaping system based on Mach-Zehnder interferometer

The invention provides a chirp laser pulse spectrum shaping system based on a Mach-Zehnder interferometer, and relates to the technical field of laser pulse amplification. The chirp laser pulse spectrum shaping system based on a Mach-Zehnder interferometer includes a laser emitting module and a beam splitting module, an optical length adjusting module and a beam combining module. The beam splitting module is arranged behind the laser emitting module. The laser emitting module is configured to generate a chirp laser pulse. The beam splitting module is configured to split the chirp laser pulse into multiple optical paths. The optical length adjusting module is arranged behind the beam splitting module, and is disposed in any split optical path. The optical length adjusting module is configured to adjust the optical length of the optical path. The beam combining module is arranged behind the optical length adjusting module and is configured to enable the chirp laser pulses with differentoptical lengths to converge and to emit the chirp laser pulses suffering from interference. The chirp laser pulse spectrum shaping system solves the gain narrowing of the spectrum during the amplification of the chirp laser pulses in the prior art.
Owner:CHENGDU NORMAL UNIV

M-Z type spectra shaper for optical fiber sensing

InactiveCN101887202AAchieve shapingAdapt to the needs of developmentNon-linear opticsEngineeringPhase modulation
The invention discloses an M-Z type spectra shaper for optical fiber sensing. A first input arm is connected with a first input arm of a first coupler, a second input arm is connected with a second input arm of the first coupler, a first output arm of the first coupler is connected with one end of a first interference arm, and a second output arm of the first coupler is connected with one end of a second interference arm; the other end of the first interference arm is connected with a first input arm of a second coupler, the other end of the second interference arm is connected with the second input arm of the second coupler, a first output arm of the second coupler is connected with the first output arm, and a second output arm of the second coupler is connected with the second output arm; a phase modulator is arranged at one side of the first interference arm; and incident lights are input to the first input arm of the first coupler from the first input arm, and emergent lights are output respectively by the first output arm and the second output arm. A 3dB bandwidth of spectra is near 100nm, and therefore, shaping form ASE light source quasi-rectangular spectra to gaussian-like spectra is efficiently realized.
Owner:ZHEJIANG UNIV

Face image shaping method and device

Aspects of the embodiments of the present invention relate to a face image shaping method and device. The face image shaping method comprises the steps of obtaining a face image; obtaining key pointsof the face by detecting the face image, wherein the key points comprise face center line key points; generating a first face triangularization grid based on the key points; obtaining a central pointneeding to move in the key points and a movement vector of the central point, and obtaining a changed second face triangularization grid based on the central point and the movement vector; and according to the first face triangularization grid and the second face triangularization grid, rendering the face image to obtain a shaped image. According to the embodiment of the invention, the large-angleside face can be shaped, and the appearance value is effectively improved.
Owner:MEGVII BEIJINGTECH CO LTD
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