179 results about "Beam transmission" patented technology

The invention relates to the technical field of ion implantation, and discloses a dynamic adjustment method for large beam uniformity of an ion implanter. According to the method, a beam spot distribution data sequence in a beam transmission path is collected in real time, uniformity drift prediction is carried out in combination with an injection process parameter set, and beam uniformity prediction parameters are generated. And capturing a current beam spot form image by using a beam spot imaging device, inputting the current beam spot form image and the prediction parameters into a plurality of beam spot classifiers containing independent classification paths in parallel, and identifying to obtain actual beam spot distortion parameters. And executing electromagnetic field parameter prediction based on the parameter, generating a predicted electromagnetic field adjustment parameter, collecting an adjusted beam spot image through a feedback mechanism, and inputting the beam spot image into a plurality of electromagnetic field parameter classifiers in parallel again to output an actual adjustment parameter. And finally, integrating the distortion parameter and the adjustment parameter to generate a dynamic adjustment instruction set, and realizing closed-loop control of beam uniformity. According to the method, the problem of uniformity drift in the large-beam ion implantation process is effectively solved, and the process stability and the implantation efficiency are improved.

The invention relates to the technical field of wireless communication, in particular to a wireless communication system signal sending and receiving method based on an AI model. The system comprises a delay coordinate embedding unit, a neural flow tracking unit, a continuous evolution unit, a Riemann decoding unit and a closed-loop control unit. The system maps the pilot frequency to a high-dimensional phase space by using a Takens principle, and reconstructs a channel dynamic topology; the core of the method is that a manifold derivative network is utilized to calculate a flow field vector, continuous time deduction is carried out through a Shenchang differential equation, evolution deviation is eliminated in combination with a geometric projection correction term, and thus the future channel state is accurately predicted. Calculating a CSI matrix based on the prediction result to optimize beam transmission; according to the method, the limitation of single-variable observation is broken through, and reconstruction and perception from discrete data to a full view of a high-dimensional nonlinear system are realized.

The invention provides an MEMS suspended heating bearing structure for characterization of a projection electron microscope (TEM) and a preparation method of the MEMS suspended heating bearing structure. An SOI silicon wafer comprises device layer silicon, a buried oxide layer and substrate layer silicon. A first silicon oxide layer is arranged on the surface of the device layer, and a heating electrode is arranged on the first silicon oxide layer; the surface of the substrate layer is provided with a second silicon dioxide layer used for back patterning and etching control. The device layer silicon is provided with a first cavity to form a suspended supporting structure, and comprises a central bearing region, a transmission window region and a plurality of supporting beams connected with the central bearing region; the substrate layer silicon is etched from the back surface to form a second cavity, and the second cavity covers the bearing area, the transmission window and the projection range of the supporting beam in the thickness direction. And the second cavity is communicated with the first cavity, so that a through type cavity heat insulation structure is formed. According to the invention, while the permeability of the electron beam transmission window is maintained, stable bearing and controllable heating of the to-be-tested sample are realized, and the requirements of structural reliability, low power consumption and electrical parasitic suppression are considered.

A single-circle injection system for a heavy ion synchrotron cancer treatment device comprises a cutting magnet, a focusing quadrupole magnet, a deflection electrode and an impact magnet, the cutting magnet, the deflection electrode and the impact magnet are all arranged on the two sides of the focusing quadrupole magnet on a synchrotron main ring track, the cutting magnet is located on one side, and the deflection electrode is located on the other side. The deflection electrode and the impact magnet are located on the other side, are directly installed on a main ring track of the synchrotron and are arranged at the positions where an injection beam is about to intersect with a closed track of the synchrotron. And the deflection electrode and the impact magnet are used for compensating the residual angle deviation, so that the beam current is completely matched with the main ring track. The invention has the advantages of high-efficiency beam transmission, simplified structure, reduced cost and flexible energy switching.

The utility model relates to the technical field of accelerator particle beam application, in particular to a pepper hole device for measuring particle beam parameters of an accelerator. According to the technical scheme, the device comprises a pepper plate hole structure, a front shading shell, a rear shading shell, a patch structure, a bottom sealing structure and a fluorescent screen structure, and the fluorescent screen structure and a camera for shooting are fixedly installed; the pepper plate hole structures are distributed at four groups of rectangular outer ends according to 90 degrees, a square groove for correspondingly installing the fluorescent screen structure is formed in the front shading shell, and a plurality of groups of rectangular protrusions are fixedly connected to the positions, corresponding to the rectangular outer ends, of the upper surface of the front shading shell. The four corners of the square groove are fixedly connected with supporting blocks used for bearing and clamping the fluorescent screen structure. The low-energy beam transmission section debugging and optimizing device is small in size, can be used for debugging and optimizing the low-energy beam transmission section in the field of accelerators, and provides a good technical basis for the field.

The invention relates to the technical field of particle accelerators, in particular to a compact rotary thin-wall beam transmission vacuum system and a design method. The beam transmission vacuum system comprises: a first transmission unit, one end of which is provided with a first bifurcated thin-wall dipolar iron vacuum chamber to form a first branch and a second branch; one end of the second transmission unit is connected with the second branch, and a second bifurcated thin-wall dipolar iron vacuum chamber and a third bifurcated thin-wall dipolar iron vacuum chamber are sequentially arranged in the second transmission unit to form a third branch, a fourth branch and a fifth branch; the fixed treatment terminal is connected with the first branch; and rotating the treatment terminal to provide the beam to one of the plurality of treatment rooms in an alternative manner. According to the invention, an intensive architecture that a single rotary treatment terminal provides particle beams for a plurality of treatment rooms at the same time is adopted, so that the equipment manufacturing cost is greatly reduced, the equipment utilization rate is improved, and the treatment cost is reduced.

At least the following are disclosed, by a network device: receiving or transmitting information including a configuration for multi-beam TCI state activation and indication; receiving or transmitting DCI based on the received configuration, the DCI performing multi-beam TCI state indication for more than one beam by using a single TCI state code point; after a specific application time, each beam indicated by a single TCI state code point is applied for downlink reception or uplink transmission, where the application time is determined within a TCI state indication duration based on one of the options signaled in the configuration, wherein a beam set in the more than one beam indicated by the single TCI state code point corresponds to a reference signal, and the reference signal is used for transmitting or receiving the beam set indicated in the TCI state; and transmitting an indication of the next TCI status with the network node.

The invention discloses a no-cable communication system based on a photon integrated phased array, and the system comprises a plurality of symmetrical double-end receiving and transmitting communication systems, a modulation and demodulation module in a local end emits a modulation optical signal, and the modulation optical signal passes through a light transmitting antenna of the local end for multi-beam transmission; the optical receiving antenna at the opposite end receives an optical signal transmitted by the local end; the corresponding optical fiber beam splitter performs energy splitting on the received optical signal, one part of light is used for bidirectional closed-loop tracking control, and the rest of light enters the corresponding modulation and demodulation module; the modulation-demodulation module at the opposite end emits a modulated optical signal, and the modulated optical signal passes through the optical emission antenna at the opposite end to perform multi-beam emission; and the optical receiving antenna of the home terminal receives the optical signal transmitted by the opposite terminal so as to establish a bidirectional full-duplex communication link. According to the invention, rapid and agile beam control and simultaneous multi-beam transceiving are realized, and the application requirements of near-field cableless multi-link parallel communication are met.

The invention discloses a transmission-type anti-vibration controllable path atmospheric turbulence measuring device, which comprises a laser emission and beam splitting module, and a subsequent light path module, a photoelectric detector and a data acquisition and processing module which are sequentially arranged along the light path direction of the laser emission and beam splitting module, the data acquisition and processing module comprises an AD converter, a data acquisition card and a computer which are connected in sequence, the AD converter is located on one side close to a photoelectric detector, and the photoelectric detector is an enhanced CCD camera or an electron multiplication CCD camera; the method does not need to depend on laser beacons and backward scattering, an active transmission-type differential light path with transmitting end homologous parallel double beams and a receiving end cooperatively regulated and controlled is constructed, common-mode noise such as telescope tracking errors and platform jittering is actively counteracted from the hardware level, double-beam transmission light is directly received, the signal-to-noise ratio is high, and by combining narrow-band filtering and polarization suppression, the detection precision is high. Environmental stray light can be effectively stripped, and light spot centroid positioning and light intensity fluctuation calculation are more accurate.

A method for manufacturing a one-step molded multi-optical-transmission-sheet assembly (100) provided with a one-step molded multi-optical-transmission-sheet (10) and a housing member (20), the method comprising: capturing an image of a position reference part (25) provided in the housing member (20) to generate a template image (I); the template image (I) includes a reference position mark (I1) corresponding to the position reference part (25) and a core position mark (I2) indicating an ideal position of each of the core regions (11) with respect to the position reference part (25), and the reference position mark (I1) and the captured image of the position reference part (25) are superimposed and coincident; one end of the one-step molded multi-light transmission sheet (10) is housed in a placement hole (23) of a housing member (20), a core region (11) exposed to the end surface at the end housed in the placement hole (23) is imaged, and the relative position of the one-step molded multi-light transmission sheet (10) with respect to the housing member (20) is adjusted. The one-step molded multi-light transmission sheet (10) is fixed to the housing member (20) such that the position of each of the captured images of the core regions (11) coincides with the position of each of the core position marks (I2) corresponding to the respective positions.

The invention discloses a waist-adjustable structure-integrated square elbow of a DNP-NMR (Dynamic Nuclear Polarization Nuclear Magnetic Resonance) system transmission line. The waist-adjustable structure-integrated square elbow structurally comprises two corrugated waveguide structures, a right triangle cavity, a metal ellipsoid mirror surface and two external flange structures. The square elbow is installed in a transmission line, and the corrugated waveguide receives an HE11 mode coupled by a Gaussian fundamental mode from a gyrotron, so that long-distance transmission with small loss and low cross polarization is realized in a transmission line system; the right triangle cavity is connected with the two ends of the corrugated waveguide, an HE11 mode transmitted in the corrugated waveguide is recoupled into a Gaussian base mode at the position, the transmission direction of a wave beam is changed through the metal ellipsoid mirror surface, and the space flexibility of the transmission device is improved. Meanwhile, the metal ellipsoid mirror surface also adjusts the waist radius of the Gaussian fundamental mode so as to match the input requirement of the nuclear magnetic resonance system and keep the phase consistency of the original wave beam at the same time; the external flange structure is used for being tightly connected with other straight waveguide sections, and continuity and collimation of the cavity structure are guaranteed. Compared with a split type part, the integrated square elbow has the advantages that the assembly error of a construction system is obviously reduced, the machining difficulty is low, and the standardization degree is high. And meanwhile, the device can meet the requirements of a dynamic nuclear polarization nuclear magnetic resonance system on high-efficiency, stable, flexible-direction and long-distance transmission of Gaussian beams.

This application provides a radar system and a target detection method. The radar system provided includes a beam transmission control component, a polarization angle modulator, an antenna array with adjustable linear polarization, a signal receiving and processing unit, and a computer. The beam transmission control component generates a transmitted signal. The polarization angle modulator modulates the transmitted signal according to the beam polarization angle indicated by the computer. The computer determines the beam polarization angle for each modulation cycle, and based on the beam polarization angle corresponding to each modulation cycle and the processing information corresponding to that modulation cycle, determines the polarization response characteristics of the target, and detects the target based on the target polarization response characteristics during target detection and tracking. The radar system and target detection method provided in this application can improve the signal-to-noise ratio, identification capability, and anti-interference ability of the radar system for detecting small, slow-moving targets.

This invention discloses a low-energy beam transmission line, comprising: a single solenoid having a channel; a first movable component connected to the single solenoid to allow the single solenoid to move along the beam transmission direction; and a vacuum accelerating tube, with a first end connected to an ion source and a second end passing through the channel and connected to an accelerator. This invention's low-energy beam transmission line, by incorporating a movable single solenoid, increases the adjustable degrees of freedom of the solenoid, enabling dual-degree-of-freedom adjustment (spatial position and magnetic field strength), thus significantly improving beam matching capability.

The invention discloses a relay satellite multi-access resource multi-satellite multi-target scheduling method and system, and relates to the field of spaceflight testing, operation and control resource scheduling, and the method comprises the steps: obtaining a to-be-scheduled task set and constraint conditions, and the constraint conditions comprise intra-task constraints generated by limiting schemes and inter-task constraints coexisting by the limiting schemes; constructing a feasible scheme set meeting the constraint in the task according to the visible window and the beam transmission rate; executing a non-subtraction domain driven algorithm, and calculating a task exchange ratio to represent the capability of a task to unblock a frozen state; and constructing a non-reduced neighborhood according to a task exchange ratio, and realizing iterative optimization of a solution by releasing a high-exchange-ratio task and reallocating a free task in the neighborhood until a global optimal scheduling solution is obtained. According to the method, a task exchange ratio and non-subtractive neighborhood construction strategy is introduced, the resource conflict problem under multi-satellite multi-target complex constraints is effectively solved, constraint dynamic configuration based on a rule engine is supported, and the task guarantee capability and the system flexibility are improved.

The invention relates to a communication method, a terminal, network equipment, a storage medium and a program product. The communication method comprises: in response to detecting that the wireless link quality corresponding to a first reference signal resource on a first reference signal resource set is lower than a first threshold value, a terminal sends first information to a network device, the first information being used for link failure recovery or beam failure recovery of a first bandwidth unit; wherein the first reference signal resource set is used for failure detection of a first bandwidth unit, and a partial bandwidth BWP of the terminal comprises at least one first bandwidth unit. According to the invention, the performance based on beam transmission on each first bandwidth unit can be ensured as much as possible, so that the communication efficiency is improved.

The invention discloses a long pulse debugging method for a large-area thermionic cathode ion source, and belongs to the technical field of thermionic cathode ion sources, and the method comprises the steps: carrying out the air inlet vacuum debugging after the ion source is assembled; the insulation and voltage endurance capability is improved through cold high-voltage exercise; turning off high voltage, lighting a lamp filament, applying arc voltage, and cleaning the cavity through arc chamber plasma discharge; the extraction voltage is gradually applied to perform beam extraction exercise, and beam transmission is optimized through diversion coefficient scanning; and finally, the diversion coefficient is reduced, the pulse width is prolonged, and long-pulse discharge debugging is realized. According to the method, a systematic debugging process from vacuum verification, insulation and voltage resistance, cavity cleaning to beam extraction and long pulse discharge is established, the stability and reliability of the ion source can be effectively improved, the breakdown risk is reduced, and a technical basis is provided for long-term stable operation of a large-area hot cathode ion source in the future.

This invention belongs to the field of fiber optic sensing technology, and discloses an integrated fiber optic sensor for seawater temperature, salinity, and depth based on a composite microstructure and its fabrication method. A single-mode fiber, a first coreless fiber, and a graded-index fiber are sequentially fused together to form a collimation structure for long-distance beam transmission. One end of the graded-index fiber is sequentially connected to a hollow-core fiber and a second coreless fiber. The core of the hollow-core fiber is filled with polydimethylsiloxane, located at the intersection of the cores of the graded-index fiber and the hollow-core fiber. The microsphere structure is divided into a cladding cavity and an air cavity from the outside to the inside. One end face of the second coreless fiber intersects with the air cavity and cladding cavity of the microsphere structure. Test results show that the integrated fiber optic sensor for seawater temperature, salinity, and depth based on the composite microstructure has the potential for integrated measurement of seawater temperature, salinity, and depth parameters.

This invention discloses a continuous-pulse column vector fiber laser cleaning system, comprising a laser generation module, a beam transmission and scanning module, and a motion control module. The laser generation module employs a continuous-pulse column vector laser, which integrates a control module capable of switching between continuous and pulsed output modes. It also integrates a polarization control system capable of freely switching between radial and angular polarization modes according to cleaning process requirements, and selecting to emit either a radially or angularly polarized beam. Within the reliable architecture of a time-sharing hybrid cleaning system, this laser cleaning system utilizes the unique spatial polarization and energy distribution characteristics of a column vector beam to replace the traditional fundamental mode Gaussian beam, achieving a significantly improved advanced laser cleaning system in terms of cleaning quality, process versatility, and overall efficiency.

For example, a radar controller may generate control signals to control transmission of radar Transmit (Tx) signals via a Tx antenna array according to a Beamforming (BF) transmission scheme, the BF transmission scheme including a sequence of transmission intervals, a transmission interval including at least one beam transmission via one or more Tx antenna sub-arrays of the Tx antenna array. For example, a Tx antenna sub-array of the one or more Tx antenna sub-arrays includes a plurality of Tx antennas along a predefined Tx sub-array direction. For example, the sequence of transmission intervals corresponds to a respective sequence of Tx angles along the predefined Tx sub-array direction. For example, a beam transmission in a transmission interval corresponding to a Tx angle includes one or more BF transmissions from the one or more Tx antenna sub-arrays, the one or more BF transmissions beamformed based on the Tx angle.

The application discloses a kind of ultra-short bending type beam homogenization transmission lines, its characteristics are: the transmission line is the ultra-short bending type strong current homogenization transmission line containing two four-eight level composite iron and a two level iron;The ultra-short bending type strong current homogenization transmission line is the ultra-short bending type strong current homogenization transmission line A arranged along the beam direction, or the ultra-short bending type strong current homogenization transmission line B arranged along the beam direction: the ultra-short bending type strong current homogenization transmission line A is sequentially provided with: accelerator exit, beam matching mechanism, four-eight level composite iron 1, two level iron, four-eight level composite iron 2, beam matching and homogenization effect observation mechanism 1, terminal 1 along the beam extraction direction;The four-eight pole composite iron of the beam line can simultaneously realize the focusing and homogenization effect to beam envelope, and the composite iron is installed on the beam transmission line, which can reduce the number of transmission elements, shorten the length of transmission line, and reduce the engineering cost of beam transport line.

This invention provides a dark-field ring illumination device and an optical inspection system, relating to the field of optical technology. The dark-field ring illumination device provides a light source that outputs an illumination beam, which is split into a first beam and a second beam by a prism beam splitting unit. An optical path transmission unit includes a first reflector and a second reflector. The first reflector reflects the first beam to an optical path refraction unit, and the second reflector reflects the second beam to the same unit. The optical path refraction unit changes the transmission direction of the first and second beams, transmitting them to a ring illumination shaping unit. The ring illumination shaping unit modulates the first and second beams into an arc shape and splices them into a ring-shaped illumination field of view for the object under test. This dark-field ring illumination device improves beam transmission efficiency and ensures omnidirectional defect detection capability.

The invention discloses a design method of a special-shaped curved surface observation window for an internal flow field focusing schlieren test, and relates to the technical field of experimental fluid mechanics. The observation window is composed of a left glass window and a right glass window, and the inner surfaces of the left glass window and the right glass window are the same as the left special-shaped wall surface and the right special-shaped wall surface of an internal flow field test area respectively; according to the light path reversibility principle, the Malus law and the design requirement that the convergence characteristic of converged light beams in a focusing schlieren system is not changed after the converged light beams penetrate through the observation window, the outer surfaces of the left glass window and the right glass window are obtained through an iteration method and a ray tracing method respectively. According to the design method, the design problem of the special-shaped wall surface observation window for carrying out a visualization test on a flow field in a special-shaped wall surface by adopting a focusing schlieren system is solved, the special-shaped curved surface observation window designed by the method meets the transmission requirement of the focusing schlieren system on light beams, and the original convergence characteristic of the light beams in front of a focusing lens is ensured; therefore, no distortion of flow field imaging is ensured.

The application discloses a kind of fast energy regulation system and proton radiotherapy device for proton radiotherapy, belong to medical equipment technical field, including first quaternary iron, energy switching device and momentum cooling device sequentially arranged on energy beam transmission line, energy switching device includes sequentially connected first impact magnet, second quaternary iron, second impact magnet, energy switching energy reducer, third impact magnet and fourth impact magnet, first impact magnet is connected with first quaternary iron, fourth impact magnet is connected with momentum cooling device, energy switching energy reducer is one-piece wedge structure, it includes low-energy beam energy reduction zone, ideal beam energy reduction zone and high-energy beam energy reduction zone.It is simple in structure, energy switching time is short, transmission efficiency is high, and it can safely and efficiently transmit energy divergence less than 15%, energy is 70-230MeV proton, and transmission efficiency can reach 5%.

This application relates to a method for producing a refractive and diffractive hybrid two-dimensional optical waveguide, belonging to the technical field of optical waveguide design, and includes the following steps: S1, setting the beam transmission path and determining the coupling-in region, transition region, and coupling-out region on the waveguide plate; S2, forming an array coupling-in grating and an array coupling-out grating in the coupling-in and coupling-out regions defined on the waveguide plate using an array waveguide grating process; S3, determining the grating period, transparent portion width, grating width, resolution, and dispersion rate of the transition region based on a preset calculation rule; S4, using the calculation data from S3, forming a diffraction transition grating in the transition region defined on the waveguide plate using a surface relief process. The hybrid refractive and diffractive waveguide results in a lower overall cost, better color, higher brightness and luminous efficiency, simpler process, higher mass production capability, less susceptibility to rainbow patterns, and no light leakage from the back side. It also requires low equipment costs and has a coupling efficiency close to 100%, leading to better performance.

This invention belongs to the field of precision scientific instruments and vacuum technology, and discloses a liquid ultrafast electron diffraction experimental station integrating a THz diagnostic structure. The station includes a vacuum chamber, a double-sided flange arranged upstream of the liquid film location along the electron beam transmission path, a position adjustment structure, a vacuum differential pipe, and a THz diagnostic structure. The double-sided flange is fixed between the vacuum pipe flange outside the vacuum chamber and the vacuum chamber itself. The position adjustment structure is axially and adjustablely fixed coaxially within the double-sided flange. The vacuum differential pipe is coaxially fixed within the position adjustment structure and passes through the sidewall of the vacuum chamber. The THz diagnostic structure is positioned between the vacuum differential pipe and the liquid film location. This invention integrates a vacuum differential system and a THz electron beam diagnostic system in situ within a single vacuum chamber, achieving synchronous compatibility between liquid-phase ultrafast electron diffraction and electron pulse time-domain diagnostics, ensuring the accuracy of time-resolved assessment of liquid-phase structure dynamics.

This application provides a high-acceptance gas charge stripper for a gas target, the main body of which is a vacuum differential structure. The stripping gas enters the stripping tube from the inlet pipe, and the charged particle beam achieves charge stripping through collision reactions as it passes through the stripping tube. Gas resistance tubes are installed at both ends of the stripping tube to restrict the stripping gas from entering the vacuum pipes at both ends of the vacuum chamber. The inner wall of the stripping tube has a variable aperture structure, with the aperture gradually increasing from the center to both ends, thereby achieving efficient charge exchange. The inner wall of the gas resistance tube also has a variable aperture structure, with the aperture gradually decreasing from inside the vacuum chamber to outside, thereby reducing the impact of the stripping gas on the vacuum level in the vacuum pipes on both sides. By setting the variable-diameter gas resistance tubes, the vacuum system can withstand a higher intake volume of stripping gas, allowing the aperture of the stripping tube to be designed to be larger, thus improving the beam acceptance of the gas charge stripper, increasing beam transmission efficiency, and ensuring the efficient and stable operation of the electrostatic tandem accelerator.

The utility model relates to a control grid for an electron curtain accelerator. Specifically, the utility model relates to a honeycomb-shaped control grid on an electron curtain accelerator. The grid comprises a grid body which is a rectangular metal plate, and a grid electrode is arranged on the grid body. The grid electrode is an array grid electrode, and the array grid electrode is composed of hexagonal small holes which are arranged in a staggered mode. The lower surfaces of the two longitudinal sides of the grid body are connected with reflecting electrodes with semicircular cross sections. By adopting the control grid for the electron curtain accelerator, the beam current loss can be reduced, and the beam current transmission efficiency can be improved.

The present application relates to the technical field of beam transport control, and discloses a kind of beam transport control systems, comprising: analysis unit, correction unit, calculation unit, analysis unit, compensation unit and calibration unit, through analysis unit accurately capture superconducting magnet vibration characteristics and generate attenuation factor, vibration-voltage response matrix and space constraint matrix constructed in conjunction with correction unit, can effectively eliminate the zero drift generated by high-frequency vibration of quantum sensor, avoid frequent calibration, improve continuous working stability, simultaneously through three-dimensional current matrix decomposition magnetic field component, dynamic response surface analysis deviation, accurately process the nonlinear magnetic field distortion at the intersection of multiple magnets, solve the problem of insufficient prediction accuracy of deep learning algorithm, compensation and calibration unit linkage, realize real-time accurate compensation through phase optimization and energy constraint, substantially reduce lateral deviation error, ensure long-distance beam transmission accuracy, especially adapt to the continuous, high-precision control demand of medical radiotherapy.

The utility model relates to the technical field of laser, in particular to a laser cutting head and a laser cutting device provided with the laser cutting head. In order to improve the cutting debugging efficiency and the adjusting precision of a three-dimensional laser cutting device, the utility model provides a laser cutting head which comprises a light beam transmission cylinder, a focus lens and an adjusting mechanism, an adjusting groove hole is formed in the cylinder wall of the light beam transmission cylinder, and the focus lens is arranged in the adjusting groove hole. The focus lens is fixed in the focus lens base and installed in the light beam transmission cylinder, and the adjusting mechanism is located outside the light beam transmission cylinder and connected with the focus lens base through a connecting piece arranged in the adjusting groove hole in a penetrating mode. The adjusting mechanism can drive the focus lens base to move in the direction of the central axis of the focus lens through the connecting piece. The laser cutting head is high in debugging efficiency and high in adjusting precision.

Embodiments of the present application provide a power supply circuit, a communication apparatus, an electronic device and a control method. The power supply circuit receives control information by means of an input interface. The power supply circuit generates a plurality of voltages on the basis of the control information, and the plurality of voltages supply power to a plurality of power amplifiers, wherein the plurality of power amplifiers are configured to perform power amplification on signals of a plurality of beams of wireless communication, and each voltage among the plurality of voltages corresponds to one power amplifier among the plurality of power amplifiers and corresponds to one beam among the plurality of beams. In this way, in the present application, power is separately supplied to each of the plurality of power amplifiers, so as to adapt to a scenario in which a wireless communications system transmits a plurality of beams, thereby improving the beam transmission stability of the wireless communications system.