49 results about "Optical field" patented technology

The invention provides a system and method for enhancing the spectrum demodulation rate of a dual-optical-frequency comb, and the system comprises a circulation light path which carries out the light splitting of excitation pulse light which is inputted to the circulation light path and corresponds to a first repetition frequency, thereby enabling one part of the excitation pulse light to be outputted towards a unit to be detected, and enabling the other part of the excitation pulse light to circulate along the circulation light path; the to-be-tested unit is used for modulating the excitation pulse light and outputting processing signal light carrying dynamic spectrum information generated based on an actual dynamic spectrum of the to-be-tested unit; the light combining unit is used for coupling the processing signal light and the sampling pulse light and outputting coupled signal light; the photoelectric detector performs light field cross-correlation-based detection on the coupled signal light and outputs a periodic electric signal; and the data acquisition and processing unit processes the periodic electric signal to obtain an actual dynamic spectrum corresponding to the unit to be detected. The detection efficiency is at least improved.

This invention discloses a tunable nanoantenna and its fabrication method, belonging to the field of nanoantenna technology. The tunable nanoantenna comprises, from top to bottom: an ordered metal mesh nanoelectrode layer, Fe... 3 O 4 The invention comprises a magnetic nanosphere layer, a silicon nanopillar micro / nanostructure layer, a substrate layer, and a lower electrode layer. This invention proposes a tunable nanoantenna and its fabrication method. Specifically, this invention combines silicon nanopillars with Fe... 3 O 4 By combining magnetic nanospheres and utilizing their synergistic effect, a composite nanoantenna with magnetic response and optical resonance characteristics can be constructed. This not only breaks through the limitations of single-material control, but also enables more flexible performance control through the dual effects of magnetic and optical fields.

The invention provides a light field quantum state regulation and control method and device based on solid higher harmonic generation conditions, and relates to the technical field of quantum optics. The laser wavelength of the driving laser and the harmonic order of the solid higher harmonic are controlled according to the control variable strategy, and higher harmonics of different quantum states are obtained; performing quantization conversion processing on higher harmonics of different quantum states to obtain a plurality of Wigner functions used for representing light field quantum state description; and performing function feature analysis on the Wigner function to obtain a light field quantum state regulation and control result including an optical modem state and a coherent state. The invention is used for solving the technical problem that the quantum state of the light field is difficult to directionally regulate and control by using the generation condition of the solid higher harmonic in the prior art.

The application discloses an acceleration measurement method and device based on optical suspended microparticle centroid motion quantum state, which utilizes optical tweezers to trap a four-level atom and a nanometer microparticle in an optical cavity simultaneously, the optical cavity is driven by driving laser LC, a stable cavity optical field, i.e., cavity mode, is excited and formed in the cavity; the cavity optical field is coupled with the internal energy level transition of the atom and the centroid motion of the nanometer microparticle simultaneously, and three control lasers LES, LER and LGR are used to drive three energy level transition processes of the atom; by controlling the three control lasers LES, LER and LGR, a rapid adiabatic process and an atomic state inversion process are realized; wherein, in the process of preparing the centroid motion of the nanometer microparticle to a target Fock state, the forward rapid adiabatic process and the atomic state inversion process are iteratively executed in sequence; in the acceleration measurement process, the reverse rapid adiabatic process, the atomic state inversion process and the population transfer process based on a pi pulse are comprehensively utilized. The application can further improve the measurement sensitivity.

According to the gallium nitride-based semiconductor laser with the gradually-changed polarized optical phonon energy waveguide layer, a fitting curve of In ion strength distribution or In atom concentration distribution of an upper waveguide layer and a lower waveguide layer is tested through SIMS, and a fitting curve of polarized optical phonon energy distribution meets any function distribution of Log3P1, Lop2P2 and Biphase. The spatial continuous regulation and control of the phonon energy of the optical field are realized, so that the LO phonon energy is continuously and gradually changed along the propagation direction, the phonon energy gradient is formed, the LO phonon scattering is improved, the inelastic scattering and energy relaxation of carriers and LO phonons are inhibited, the carrier transportation and phonon scattering are optimized, the service life of the carriers and the gain retention time are prolonged, and the optical field performance is improved. According to the invention, the threshold current density is reduced, the thermal stability of the laser is improved, the use power and the use temperature of the laser are improved, meanwhile, the phonon energy valley value is matched with the quantum well gain peak, the scattering loss is inhibited, additional scattering caused by phonon energy mutation is avoided, the light field limitation is enhanced, and the slope efficiency is improved.

This invention belongs to the field of optical computation and simulation technology, specifically a rotationally symmetric optical field modeling method based on FD-BPM in cylindrical coordinates. This invention uses Matlab as a platform to create models of optical elements, including setting the morphology, refractive index, wavelength, amplitude, and wavefront of the incident light field. Based on beam propagation and the finite difference method with boundary conditions, the near-field and far-field optical fields at arbitrary positions of the rotationally symmetric optical element are calculated. This method can obtain various optical information modulated by the optical element, including intensity and phase information at arbitrary positions in the near and far fields, thereby calculating transmittance, focusing efficiency, depth of focus, and focal spot size. This invention greatly improves the accuracy and computational efficiency of optical simulation, and can significantly shorten the development cycle and reduce experimental costs in the design and optimization of large-aperture, short-wavelength focusing optical elements.

The invention provides a gallium nitride-based semiconductor laser with a gradient radiation recombination coefficient waveguide layer, which is characterized in that a lower waveguide layer and an upper waveguide layer are respectively a gradient radiation recombination coefficient lower waveguide layer and a gradient radiation recombination coefficient upper waveguide layer; and a fitting curve of In ion strength distribution or In atom concentration distribution and a fitting curve of radiation recombination coefficient distribution of the waveguide layer on the gradient radiation recombination coefficient both meet any function distribution of GaussAmp, InvsPoly and Hill in an SIMS test. A fitting curve of In ion strength distribution or In atom concentration distribution and a fitting curve of radiation recombination coefficient distribution of the waveguide layer under the gradient radiation recombination coefficient both meet BiDoseResp function distribution in an SIMS test. According to the invention, carriers, quantum recombination and a light field are efficiently localized, the laser gain is improved, the carriers and the light field are efficiently localized in an active layer (quantum well), meanwhile, non-radiative recombination and absorption loss of a waveguide region are inhibited, and the threshold current, slope efficiency and reliability are further improved.

This invention discloses a method for enhancing the uranium separation efficiency of commercial iron powder using an external field, comprising: adding commercial iron powder to a reactor containing fluorine- and uranium-containing wastewater; applying an external weak magnetic field or magneto-optical coupling; and performing uranium separation treatment on the fluorine- and uranium-containing wastewater under continuous stirring. This invention magnetizes the commercial iron powder by introducing a weak magnetic field, thereby attracting Fe... 2+ Migration disrupts the passivation layer on the surface of iron powder, promoting the reaction of U(VI) with Fe. 0 The redox reaction simultaneously strengthens the affinity between the magnetized iron powder particles and the paramagnetic O2 molecules, leading to the formation of γ-FeOOH nanosheets with a high specific surface area on the iron powder surface. The γ-FeOOH surface is rich in oxygen-containing functional groups, which achieve U(VI) separation through the bonding of -OH groups with U(VI). This invention, based on a weak magnetic field, further improves the separation efficiency of commercial iron powder for U(VI) in fluoride- and uranium-containing wastewater by coupling with an optical field.

The application belongs to the technical field of sensor measurement, and discloses a spherical joint multi-degree-of-freedom attitude measurement system and method. The system comprises a magnetic field measurement module, an optical field measurement module and a calculation module, wherein: the magnetic field measurement module measures the change of the magnetic field when the moving end of the spherical joint moves relative to the fixed end; the optical field measurement module measures the change of the optical signal when the moving end of the spherical joint moves relative to the fixed end; and the calculation module is used for calculating the angle and the angular velocity of the moving end of the spherical joint relative to the fixed end at the current moment according to the change of the magnetic field measured by the magnetic field measurement module and the change of the optical signal measured by the optical field measurement module respectively, and then fusing the angle and the angular velocity at the current moment to obtain the angle of rotation of the moving end of the spherical joint relative to the fixed end at the next moment. Through the application, the advantages are complementary, and the precision and the robustness of the measurement system are improved.

This application relates to a multi-plane optical conversion device and its design method, comprising: a phase modulation component, an optical path reflection component, and a beam splitter component. The phase modulation component includes N phase planes, where N≥1. The optical path reflection component is disposed on the optical propagation path of the phase modulation component and located at the end of the optical propagation path of the phase planes. The beam splitter component is disposed at the beginning of the optical propagation path of the phase modulation component. The device is configured to form a folded optical path, such that incident light enters through the beam splitter component, passes through the phase modulation component along a first propagation direction to reach the optical path reflection component, is reflected by the optical path reflection component, passes through the phase modulation component again along a second propagation direction, and is output by the beam splitter component. Each phase plane has the same physical phase profile in both the first and second propagation directions. This invention reduces the actual number of stacked physical phase planes while achieving the same optical field modulation effect.

The invention discloses a photoacoustic sensing unit, an acoustic signal detection device and an acoustic signal detection method, and relates to the technical field of acoustic detection. The lower wrapping layer is arranged on the upper surface of the substrate, and a mounting groove is formed in the lower wrapping layer; the core layer is arranged in the mounting groove, the core layer comprises a straight waveguide and a circular waveguide, and a coupling distance is formed between the straight waveguide and the circular waveguide; the straight waveguide, the circular waveguide and the coupling space jointly form a light field regulation and control area; the exposed area covers the core layer and the lower wrapping layer, the exposed area comprises a groove, and the sensitive medium packaging layer is used for receiving sound pressure signals, generating corresponding deformation and transmitting the deformation to the core layer to cause the structure or state change of the light field regulation and control area, so that the effective refractive index of the circular waveguide is changed, and the sound pressure signal is generated. The change of the effective refractive index causes the drift of the harmonic peak wavelength, and the variation of the sound pressure signal is determined according to the displacement of the harmonic peak wavelength. The sensitivity of sound pressure detection is improved.

The invention provides a coherent array structure light turbulence compensation method and system based on gradient back propagation, and the method comprises the steps: calculating the theoretical light intensity distribution of a defocus plane at a set distance after a focusing lens is focused through constructing a light field model of a coherent laser array under a turbulence-free condition; collecting observation light intensity distribution at a set distance after focusing of the focusing lens after transmission of the atmospheric turbulence; and constructing a loss function by using a mean square error between theoretical light intensity distribution and observation light intensity distribution, taking an array parameter as an optimization variable, calculating a gradient by using a gradient back propagation algorithm, and iteratively updating the array parameter. And the theoretical light intensity distribution and the loss value are calculated again after each update until convergence. And finally, subtracting the optimized array parameter from the initial array parameter to obtain a turbulence compensation parameter, and adjusting an array emission state according to the turbulence compensation parameter, thereby realizing effective compensation of wavefront distortion introduced by atmospheric turbulence. According to the invention, distortion is inverted through out-of-focus light intensity, the structure is simple, and the compensation efficiency is high.

The invention discloses a mode regulation and control laser based on Feshbach-like resonance, and belongs to the technical field of laser. Comprising a multimode gain module, a saturable absorption module, a Feshbach resonance tuning module and an output module which are sequentially arranged along an optical path. The multimode gain module provides optical signal energy and generates a multimode optical field; the saturable absorption module forms a pulse signal; the Feshbach resonance tuning module adjusts the polarization state through a polarization control part, changes the reflectivity of different frequency components by using a frequency reflectivity curve tuning device, constructs a mode coupling channel and introduces similar Feshbach resonance; and the output module is used for exporting the regulated and controlled laser signal. The directional distribution of the gain among different modes is realized through Feshbach-like resonance, the output light field mode is regulated and controlled from the perspective of active gain design, the energy loss in the traditional light field modulation is avoided, the energy utilization rate is obviously improved, and the method is particularly suitable for high-power and multi-mode dynamic switching scenes, and can be applied to the fields of hyperfine processing, high-speed communication and the like.

The application discloses a point diffraction wavefront regulation device based on an integrated structure of a fiber taper probe and a superlens and an optical detection equipment, and relates to the technical field of optical field regulation and micro / nano fiber output wavefront. Based on the point diffraction wavefront characteristics of the probe tip and the wavefront regulation capability of the superlens, the micro-scale light spot after phase shaping is accurately projected to a specific area on the sample surface under the condition that the axial propagation distance is significantly larger than the characteristic scale of the probe tip, and the functions of local excitation, selective irradiation and optical field control under the condition of high spatial bunching are realized. Compared with the traditional point diffraction wavefront generation scheme using a pinhole, an aperture or a conventional fiber end face, the application has significant advantages in the phase consistency of the point diffraction wavefront, the energy utilization rate, the processing repeatability and the system integration degree, and provides a high-controllability device structure scheme for micro / nano-scale optical detection and optical field analysis.

To provide an optical transmission line monitoring device for highly accurately estimating the distribution of optical power.SOLUTION: A first compensation unit configured to compensate for a part of chromatic dispersion of an optical transmission line and a part of high-order chromatic dispersion with respect to an electric field signal indicating an optical electric field component of an optical signal digitally coherently received from the optical transmission line; The optical transmission device includes a nonlinear compensation unit that compensates for deterioration due to a nonlinear optical effect of an optical transmission path, a second compensation unit that compensates for a remaining portion of chromatic dispersion and a remaining portion of higher-order chromatic dispersion with respect to an electric field signal after compensation by the nonlinear compensation unit, a generation unit that generates a reference signal indicating a photoelectric field component of an optical signal at a transmission end of the optical transmission path based on the electric field signal, and an estimation unit that estimates a distribution of optical power based on a correlation between the electric field signal after compensation by the second compensation unit and the reference signal.SELECTED DRAWING: Figure 3

The invention discloses a wavelength-adjustable Tamm laser based on a two-dimensional perovskite material and a preparation method thereof, the laser sequentially comprises a substrate, a DBR reflecting layer formed by alternating titanium dioxide and silicon dioxide, a two-dimensional perovskite absorbing layer and a silver reflecting layer from bottom to top, the bottom silicon dioxide layer is in contact with the substrate, and the bottom silicon dioxide layer is in contact with the silver reflecting layer. The top titanium dioxide layer is in contact with the two-dimensional perovskite absorption layer, and the thickness of the top titanium dioxide layer is smaller than that of the other titanium dioxide layers; the silver reflecting layer and the DBR reflecting layer form a Tamm state, and the high exciton binding energy of the two-dimensional perovskite material and the optical Tamm state form a strong coupling effect. The DBR structure introduced by the laser has high reflectivity for a target optical wave band, light is limited in the perovskite layer, and the Tamm state promotes the enhancement of the optical field intensity near the perovskite layer, so that the lasing and reduction of the thickness of top titanium dioxide are realized, the phase round-trip condition is met, and the maximization of the enhancement of an electric field in the perovskite layer is realized; and a low laser threshold is realized.

This invention provides a target enhancement imaging method and system based on frequency domain modulation of multidimensional information. The method includes: performing Fourier transforms on the acquired first and second multidimensional feature information to obtain first and second optical field information, respectively; performing optical field modulation processing on the first and second optical field information using an optical modulation window on the Fourier plane of the target enhancement imaging system to obtain first and second modulated optical field information; and performing detection imaging processing on the first and second modulated optical field information to obtain enhanced imaging results. The optical modulation window is a series of concentric annular channels, each of which is assigned a different transmittance function based on its radial position to differentially modulate the optical field information incident on the corresponding concentric annular channel. This achieves efficient and accurate enhancement of multiple types of targets in a single imaging operation.

This invention relates to a method and apparatus for photoacoustic bone metabolism feature analysis based on optical field modulation. The method includes: exciting a periodic pulsed beam with a laser; modulating the original laser beam into a spatially modulated beam using a spatial light modulator; irradiating the bone to be tested in a through-beam mode; constructing a controllable, gradually varying acoustic velocity gradient between the bone tissue and the ultrasound probe using a hydrogel with progressive acoustic impedance; acquiring photoacoustic signals generated by multiple wavelength pulsed beams incident on the bone to be tested in a photoacoustic through-beam mode during one detection cycle; fitting the photoacoustic signals corresponding to different wavelengths according to a set photoacoustic transmission equation to calculate the optical absorption spectrum curve of the bone to be tested. Compared with existing technologies, this invention has the advantages of being non-invasive, radiation-free, highly efficient, having high photoacoustic signal excitation efficiency, and a high signal-to-noise ratio.

The invention discloses an atomic potential well functional device, and relates to the field of micro-nano particle control. The device adopts a two-dimensional film including but not limited to crystal ceramic, amorphous glass or a rigid structure, a natural potential well is formed by valence band gaps, functional atoms or ions are embedded and stably restrained, and control over the atoms or ions is achieved in combination with an electric field, a magnetic field or a light field. And the method can be applied to scenes such as data operation, energy storage, data storage, precision sensing, micro-nano driving, energy capture, imaging display and the like. The device is simple in structure and stable in work, solves the problem that an existing scheme is insufficient in precision and sensitivity, and is wide in application prospect.

This application discloses a method and apparatus for partial discharge detection based on Rydberg atoms, relating to the field of partial discharge detection technology for power equipment. This application includes an optical field adjustment module surrounding an atomic gas chamber, comprising a phase delay element, a polarization element, and a drive adjustment mechanism. The drive adjustment mechanism dynamically adjusts the rotation angles of the phase delay element and the polarization element in real time, dynamically adjusting the polarization state and relative phase of the probe light and coupling light incident on the optical field adjustment module. The probe light and coupling light, processed by the optical field adjustment module, are then injected into an atomic gas chamber filled with alkali metal atoms, causing the alkali metal atoms to transition from their ground state to the Rydberg state and couple with the pulsed electric field generated by the partial discharge of the device under test. Partial discharge characteristic parameters are obtained through photoelectric detection and calculation. The technical solution disclosed in this application can dynamically calibrate optical field parameters in real time, ensuring detection accuracy and meeting the needs of long-term online monitoring in industrial settings.

The invention discloses a system and a method for generating Poynting vector optical skyrmion based on tightly focused second-order circularly polarized vortex light, and belongs to the technical field of light field regulation and control. The method comprises the following steps: firstly, converting incident light into left-handed or right-handed circularly polarized light through a polaroid and a 1 / 4 wave plate, and then loading a specific topological charge value for the left-handed or right-handed circularly polarized light by using a spiral phase modulator; the tight focusing optical unit is continuously used for tight focusing, and the Poynting vector optical Skyrmion is preliminarily generated; then annular amplitude shaping is carried out on the light field through an annular amplitude modulator, and according to the Richards-Wolf vector diffraction theory, it is calculated that the stable and efficient Poynting vector optical Skyrmion tubular structure can be generated in a three-dimensional free space in a focusing field after second-order circular polarization vortex light passes through a tight focusing optical unit. The optical skyrmion topological characteristics and spatial form are controlled by regulating and controlling polarization, phase, amplitude and focusing conditions of the light field.

Aspects of the subject disclosure may include, for example, deriving substantially orthogonal optical fields from an output of an optical source, implementing a delay on one of the substantially orthogonal optical fields, resulting in time delayed optical fields, performing coherent detection of the time-delayed optical fields, resolving electrical field signals based on the coherent detection, and causing the electrical field signals to be processed so as to estimate a property of the optical source, wherein estimation of the property facilitates disturbance detection and localization. Other embodiments are disclosed.

This invention discloses a method for detecting hyperbola surface defects based on optical field correlation fusion, comprising the following steps: S1, calculating temporal and frequency domain features of the real-time structured light field video stream captured by the structured light field defect detection system, and weighting and fusing the temporal and frequency domain features; S2, regressing the distribution of the fused feature values ​​on adjacent microlenses to predict the defect center and defect size; S3, generating a detection box and eliminating duplicate detections to obtain the defect detection result.

Aspects of the subject disclosure may include, for example, generating a first set of optical signals, demultiplexing the first set of optical signals to generate demultiplexed signals, launching the demultiplexed signals into a medium, receiving from the medium a second set of optical signals, multiplexing at least a portion of the second set of optical signals to generate one or more multiplexed signals, obtaining one or more electrical signals according to one or more measurements of one or more optical fields of the one or more multiplexed signals, and generating one or more point spread functions from the one or more electrical signals. Other embodiments are disclosed.

This application discloses a method, system, medium, and product for single-molecule Raman signal optical field modulation enhancement, relating to the field of single-molecule Raman detection technology. The method includes: acquiring the current capture parameters of the target single molecule in the current optical field region of the sample to be tested, collected by a single-molecule capture module; acquiring the current Raman scattering signal of the target single molecule in the current optical field region, collected by a Raman signal acquisition module; determining the matching status between the current optical field region and the target single molecule based on the current Raman scattering signal and the current capture parameters; determining the operating parameters to be adjusted based on the matching status between the current optical field region and the target single molecule, and adjusting the operating parameters. This application achieves accurate detection of single-molecule Raman signals.

The application discloses a polydimethylsiloxane optical cavity direct-current magnetic field sensing system, and belongs to the optical field, wherein a signal output by a tunable laser is sent to an input end of a polarization controller; an output end of the polarization controller is connected with a fiber taper; the fiber taper is coupled with a polydimethylsiloxane optical cavity in a sensing unit, and after the coupling, a signal output by the fiber taper is sent to an input end of a detector; an output end of the detector is connected with an input end of a beam splitter, three signals output by the beam splitter are sent to a servo controller, an oscilloscope and an electrical spectrum analyzer respectively; an output end of the servo controller is connected with an input end of the oscilloscope in one way and connected with a regulation and control input end of the tunable laser in another way. The application can measure the direct-current magnetic field by using singular points existing in the sensing system, has high sensitivity, and can remotely detect the magnetic field information.

The invention discloses a molecular terahertz spectrum measurement method and system based on plasmon nano optical tweezers, and belongs to the technical field of molecular spectrum detection and nano manipulation. A local enhanced light field generated by a plasmon nano structure is utilized to capture and fix nanoparticles of a single target molecule or a loaded molecule in an aqueous solution; generating frequency-tunable terahertz waves by adopting a double-laser beat frequency technology, and coupling the terahertz waves to the local light field to excite a captured target; monitoring the optical signal change caused thereby in real time; acquiring a characteristic vibration spectrum of the target molecule by scanning the terahertz frequency; the plasmon nano optical tweezers and the optical beat frequency terahertz technology are combined, so that the terahertz vibration spectrum of the single molecule or nano particle level in the aqueous solution environment is directly measured, and the core problem that the traditional terahertz technology cannot be used for liquid-phase biological detection due to strong absorption of water is solved.

A method for online compensation of optical rotation angle detection errors caused by optical polarization fluctuations is proposed. Based on the response signal of atomic spin to magnetic or optical field modulation, combined with wavelet analysis data denoising and incremental PID control algorithms, the method achieves rapid real-time compensation of optical rotation angle detection errors by changing the optical axis angle of the quarter-wave plate in the optical path. This method is reasonable, universal, and simple to operate experimentally. It is not limited by the complexity of the optical path and can be applied to various scenarios based on optical rotation angle detection systems.

The invention relates to the technical field of quantum optics, and discloses a coherent feedback enhancement system and method for an entangled light field. According to the system, a closed-loop coherent feedback light path is constructed by adopting a control coupling mirror which has asymmetric transmissivity for a signal light field and an idle light field, and low-noise and high-precision control on an entanglement source is realized in cooperation with a feedback control device of an optical resonant cavity structure and an NOPA (Noise Over Power Amplifier) working in a parametric anti-amplification state. According to the method, a complete entanglement enhancement and verification process is formed by cooperatively configuring a transmissivity parameter, locking an optical cavity length to ensure an optimal working phase and combining balanced zero beat detection verification. The technical problems that additional noise is introduced in traditional measurement feedback and the phase-sensitive control flexibility is insufficient are effectively solved, the entanglement degree is remarkably enhanced, the system stability is comprehensively improved, and the method has the advantages of being high in entanglement purity, good in phase stability, low in resource consumption, high in system expansibility and the like; the method is suitable for quantum information processing scenes requiring high-quality entanglement sources.

The invention relates to a sub-hundred nanoparticle control method based on near-field optics. The sub-hundred nanoparticle control method comprises long-distance conveying and sorting. A metal horseshoe-shaped nano aperture array is designed, laser is bound in nano holes by applying a metal local plasmon effect and a metal heat effect to form hot spots of near-field electromagnetic wave enhancement and local temperature gradient, and light force and thermophoresis force are generated; a near field excited structurally is designed into an optical hot spot array with adjustable wavelength, hot spot positions of a light field and a thermal field are periodically changed through wavelength change, and particles are driven to move under the combined action of the light field and the thermal field; according to different stress of particles with different particle sizes, front-back separation of the particles in long-distance transmission in a static liquid environment is realized according to a preset illumination strategy. Compared with the prior art, high-precision long-distance conveying and sorting of particles with different particle sizes can be achieved, and the device has the advantages of being capable of achieving long-distance conveying, high in sorting efficiency, high in control precision and the like.