76 results about "Lateral resolution" patented technology

The invention relates to a method and system for measuring the three-dimensional morphology of a metal hydrophobic surface based on white light microscopic interference, and belongs to the field of precision measurement, and the method comprises the steps: firstly, measuring a sample, scanning the surface of the sample, and synchronously collecting a white light interference image sequence containing surface contour information; adopting a bicubic interpolation algorithm to carry out interpolation processing on the acquired white light interferogram group, and constructing a high-resolution interference image sequence; analyzing the time-frequency domain interference signal through fast Fourier transform, effectively inhibiting noise interference in combination with a filtering technology, and accurately extracting an envelope curve of the interference signal; and carrying out Gaussian fitting on the envelope peak by adopting a least square method and positioning a peak value coordinate, and finally reconstructing a high-precision three-dimensional surface topography. According to the method, through advantage complementation of the bicubic interpolation algorithm and the fast Fourier transform method, the transverse resolution is remarkably improved while the longitudinal resolution is kept, and an effective technical means is provided for accurate characterization of the three-dimensional morphology of the metal hydrophobic surface structure.

The invention discloses a three-dimensional seismic high-resolution strengthening method based on an adaptive reflection coefficient. The method comprises the following steps: S10, acquiring a three-dimensional seismic data volume; s20, constructing a reflection coefficient prior probability model through multi-scale dictionary construction and statistical feature extraction; s30, adaptive matched filtering: performing time-varying filter and directional compensation on the original three-dimensional seismic data volume and the Q-field model to obtain a data volume subjected to Q compensation and reflection feature enhancement; s40, three-dimensional anisotropy enhancement: carrying out structure tensor field calculation and tensor driving diffusion on the data volume in the step S30 to obtain enhanced data; and S50, joint inversion optimization: performing joint inversion by using the reflection coefficient prior probability model and the enhanced data to obtain a final high-resolution seismic body. According to the three-dimensional seismic data processing method, a physical mechanism and data driving are fused, a three-dimensional processing technology considering vertical and transverse resolution improvement is adopted, and the contradiction between resolution improvement and geological authenticity maintenance in three-dimensional seismic data processing is solved.

A method for recognizing a dominant carbonate rock reservoir in a complex facies zone, comprising: determining a lithologic type and lithologic physical properties of a study section (S100); carving out a development pattern configuration of a special geologic body in the lithologic type (S200); on the basis of the development pattern configuration, using an iterative modeling method to construct an inversion low-frequency model under a phase controlled constraint (S300); using the inversion low-frequency model to perform multi-parameter pre-stack inversion of the study section to obtain an inversion parameter data volume of the study section (S400); and using a multi-parameter intersection method to predict a dominant reservoir distribution in the inversion parameter data volume (S500). Also provided are an apparatus for recognizing a dominant carbonate rock reservoir in a complex facies zone, and an electronic device. By means of the phase controlled constraint, a configuration attribute representing geomorphic facies and lithologic inversion representing lithologic facies are comprehensively considered, and the attribute lateral resolution and the inversion longitudinal resolution are combined, thereby achieving high-precision recognition of a dominant carbonate rock reservoir in a complex facies zone.

The invention relates to a single-objective isotropic three-dimensional super-resolution imaging method, which comprises the following steps of: outputting a linear polarization excitation light beam through a picosecond pulse laser, and outputting a linear polarization loss light beam through a nanosecond pulse laser, adjusting the polarization direction and power of the excitation light beam and the loss light beam by using a half-wave plate and a polarization beam splitter, enabling the loss light beam to enter a spatial light modulator, modulating a light field by loading a preset phase diagram, generating three focuses with different topological charges, axial positions and energy distribution, and outputting the three focuses. The high-order vortex phase retarder is used for carrying out polarization state modulation on the focus and separating loss light beams with different polarization components, the imaging resolution ratio smaller than 100 nm in the transverse direction and the axial direction is achieved, the transverse resolution ratio is similar to the axial resolution ratio, the three-dimensional real structure of an object can be accurately reflected when three-dimensional super-resolution imaging is carried out, and the imaging precision is improved. The imaging resolution is in direct proportion to the loss light intensity, and the higher the loss light intensity is, the higher the three-dimensional imaging resolution is.

An OCT system for the retina (4) comprises: an illumination unit (36) providing SS-OCT source radiation, an illumination beam path leading to the object (4) and a measurement beam path coming from the object (4) to a detector (38) having pixels (74), wherein the measurement beam path is coupled out via a splitter element (42), a filter element (48) following the splitter element (42) which makes the numerical aperture of the image larger in a first direction (x) than in a second direction (y) lying transversely thereto, and a coupling device (52, 66) for coupling in the reference radiation (R) in the pupil and outside the optical axis (6), so that the reference radiation (R) is superimposed on the detector (38) with the measurement radiation (M) at an angle, wherein the control device (58) reads out pixels (74) of the detector (38) which correspond to a line-shaped area in the image field (22) correspond,which has a line length along the first direction (x) and a line height along the second direction (y), and the control device (58) realizes an image field (22) that is higher than the line height by moving the line-shaped region over the object (2) along the line height, wherein a depth resolution of the generated 3D image is determined by the spectral range and spectral bandwidth of the tuning, and a lateral resolution of the 3D image is determined by the numerical aperture in the line direction and by the line height.

The invention provides a long-focal-depth Bessel beam volume microscopic imaging system, and belongs to the technical field of optical microscopic imaging. The system comprises a non-diffraction light beam generation module, a scanning and focusing module, a sample control module, a fluorescence signal detection module and a microscopic imaging processing terminal. According to the invention, laser is used as an excitation light source, the non-diffraction beam generation module generates a long-focal-depth Bessel beam with a non-diffraction distance n times that of a traditional Bessel beam, the transmission distance is controllable, the limitation of an effective numerical aperture can be broken through, and under the condition of a certain transverse resolution, an ultra-large imaging depth of field is provided. Volume imaging is realized by using the characteristic of long focal depth and no diffraction, more axial information stacks are obtained, and the imaging speed and the imaging resolution are relatively high.

Changes in tissue stiffness have long been associated with disease. Systems and methods for determining the stiffness of tissues using ultrasonography may include a device for inducing a propagating shear wave in tissue and tracking the speed of propagation, which is directly related to tissue stiffness and density. The speed of a propagating shear wave may be detected by imaging a tissue at a high frame rate and detecting the propagating wave as a perturbance in successive image frames relative to a baseline image of the tissue in an undisturbed state. In some embodiments, sufficiently high frame rates may be achieved by using a ping-based ultrasound imaging technique in which unfocused omni-directional pings are transmitted (in an imaging plane or in a hemisphere) into a region of interest. Receiving echoes of the omnidirectional pings with multiple receive apertures allows for substantially improved lateral resolution.

The application relates to a moving target constant resolution ISAR imaging method and device based on track information. The method comprises the following steps: obtaining a speed vector of a moving target by processing track information, inputting the speed vector into a pre-constructed extended Kalman filter to obtain an attitude angle of the moving target at each time, converting the attitude angle of the moving target in a three-dimensional space into an actual rotation angle in two-dimensional imaging through a rotation matrix, obtaining an effective rotation angle according to the actual rotation angle, accumulating the effective rotation angles of continuous multiple time points until the accumulated angle meets a preset horizontal resolution threshold, taking the time corresponding to the accumulated angle as an imaging window length, accumulating the effective rotation angles according to the preset horizontal resolution threshold, obtaining multiple imaging window lengths, obtaining multiple target images, and realizing imaging of the moving target. The method has noise stability in the imaging process of the target, and further improves the target imaging quality.

This application relates to the field of optical technology and discloses an optical component. A beam splitter assembly intersects with a first optical path. The beam splitter assembly includes a first beam splitter and a second beam splitter. The first beam splitter intersects with a first beam to transmit a first split beam from the first beam. The second beam splitter intersects with a second beam to transmit a second split beam from the second beam. An optical modulator intersects with the first and second beam splitters to modulate their phase. Lens assemblies are respectively disposed on a second and a third optical path to amplify and rotate the first split beam before projecting it onto a first region to form a first pattern. Lens assemblies amplify and rotate the second split beam before projecting it onto a second region to form a second pattern. The horizontal resolution of the first and second patterns is greater than their vertical resolution. The first and second patterns combine to form an elongated image. This provides an optical component and a head-up display system for improving horizontal resolution and image size.

The present application relates to the field of optical imaging technology, and particularly relates to a full-depth-range high-lateral-resolution OCT imaging method, system and storage medium based on interference synthetic aperture. The OCT imaging method comprises sample positioning: moving the point spread function of the sample to a region close to 0 optical path; collecting three-dimensional original data; pre-processing the collected three-dimensional original data to obtain complex signals containing amplitude and phase information; performing three-dimensional Fourier transform on the scattering potential distribution based on a synthetic aperture algorithm to obtain frequency domain signals, correcting the nonlinearity of the spatial frequency by interpolation or frequency domain filtering before interpolation, and then performing inverse Fourier transform to reconstruct the spatial distribution of the scattering potential and obtain three-dimensional image data. The detail information of the defocus region is recovered, high-resolution imaging in the full depth range is ensured, and the inherent contradiction between lateral resolution and focal depth is broken through.

The application discloses a method for generating an ultralong focal depth array beam, and belongs to the technical field of grating manufacturing. The method comprises the following steps: constructing a Bessel beam excitation phase and a circular Airy beam excitation phase, constructing a composite phase distribution according to the array Bessel beam excitation phase and the array circular Airy beam excitation phase, and encoding the composite phase distribution to a metasurface; irradiating the metasurface with a linear polarization state plane wave, so that a left-handed circular polarization component excites an array Bessel beam, and a right-handed circular polarization component excites an array circular Airy beam; the array circular Airy beam is converted into a Bessel propagation mode after self-focusing, is spliced with the array Bessel beam in an axial direction to form a continuous light field distribution, and an ultralong focal depth array beam is obtained. The method can be applied to the fields of parallel laser processing, three-dimensional microscopic imaging and microparticle manipulation, and can extend the focal depth of the array Bessel beam while keeping the transverse resolution close to the diffraction limit.

The object of the present invention, which relates to a method for printing a substrate by means of inkjet printing, is to enable accurate printing of a bonding point matrix with less complexity than an ideal orthogonal bonding point matrix by shifting, rotating or deforming it, in particular by nonlinear deformation. This object is achieved in that the bonding areas of a bonding area line are determined relative to the nozzle lines by selecting a lateral resolution that is sufficiently large so that the minimum distance between nozzle lines is smaller than the minimum distance between bonding area rows, and by varying (deforming) the distances between adjacent bonding area rows between the various bonding area lines specified by the substrate, and thus only the print head nozzles having nozzle lines intersecting the bonding areas are actuated according to the nozzle actuation scheme and the corresponding bonding area type.

The invention discloses a river full-section acoustic flow velocity measurement method and a flow velocity meter, the river full-section acoustic flow velocity measurement method combines a time difference method and a frequency difference method, utilizes the advantage of accurate measurement of the frequency difference method in a high flow velocity scene, makes up for the measurement insufficiency of the time difference method in high flow velocity, high sediment content and bubble content, and improves the measurement accuracy. The measurement precision in the wet season is improved, and flood disasters are warned in advance; the time-difference method has the advantages of accurate measurement and full-section measurement under normalization and low flow velocity. The two parts are measured in real time and are compared and verified, so that the high-precision measurement of the whole section is realized, and the section flow rate coverage rate is increased from 75-85% of the traditional ADCP to more than 98%; the vertical resolution reaches 0.1-0.5 m, and the transverse resolution reaches 1-5 m.

Changes in tissue stiffness have long been associated with disease. Systems and methods for determining the stiffness of tissues using ultrasonography may include a device for inducing a propagating shear wave in tissue and tracking the speed of propagation, which is directly related to tissue stiffness and density. The speed of a propagating shear wave may be detected by imaging a tissue at a high frame rate and detecting the propagating wave as a perturbance in successive image frames relative to a baseline image of the tissue in an undisturbed state. In some embodiments, sufficiently high frame rates may be achieved by using a ping-based ultrasound imaging technique in which unfocused omni-directional pings are transmitted (in an imaging plane or in a hemisphere) into a region of interest. Receiving echoes of the omnidirectional pings with multiple receive apertures allows for substantially improved lateral resolution.

The invention discloses a shale-oil-rock facies combined seismic facies inversion method based on deep learning, and the method comprises the steps: carrying out the preprocessing of a pre-stack angle gather and logging data, and carrying out the seismic facies division of seismic data through employing a K-Means clustering algorithm; establishing a three-dimensional convolution deep learning model based on a space-time attention mechanism, introducing a position coding theory in natural language processing to convert a seismic facies classification result into a time sequence code, and introducing the time sequence code into the three-dimensional convolution deep learning model to form a seismic facies control deep learning model; and training the seismic phased deep learning model by adopting a semi-supervised learning method to obtain inversion longitudinal and transverse wave velocity and density result transverse resolution. Transverse resolution of longitudinal and transverse wave velocity and density results of phase-controlled deep learning inversion is superior to that of a non-phase-controlled inversion result, and the thickness of an inverted thin layer is far smaller than one fourth of the wavelength of seismic waves.

The invention relates to the technical field of geophysical exploration, in particular to an electromagnetic method and microseismic monitoring combined observation inversion constraint method, medium and equipment, and the method comprises the following steps: constructing an underground resistivity model and a speed model; according to the corrected travel time difference, constructing an inversion objective function based on the micro-seismic first-arrival wave travel time difference, and obtaining speed model parameters through accompanying state method first-arrival wave travel time difference tomography; and constructing a magnetotelluric inversion objective function by using a regularization method, adding the velocity transverse gradient of the velocity model parameter discrete grid to a smooth constraint term of the resistivity model, and solving the magnetotelluric inversion objective function by using global optimization inversion to obtain an inverted resistivity model. According to the method, the speed model obtained through microseism monitoring travel time inversion has the characteristic of high lateral resolution, the lateral smoothness of the resistivity model can be reduced through natural exponential function weighting, and the lateral resolution of resistivity inversion is improved.

This invention provides an electrically controlled microsphere-enhanced liquid crystal layer, a differential confocal microscopy imaging method and system. The electrically controlled microsphere-enhanced liquid crystal layer includes an electrically controlled liquid crystal layer and a microsphere array disposed on the electrically controlled liquid crystal layer. The method includes the following steps: converting a single-wavelength parallel beam into circularly polarized light, focusing it through an objective lens and an objective lens driver, and scanning the sample through the electrically controlled microsphere-enhanced liquid crystal layer; applying a voltage to the electrically controlled microsphere-enhanced liquid crystal layer; collecting the reflected or scattered return beam from the sample, splitting it into two probe beam paths, and generating corresponding first and second images; calculating the image quality evaluation value of the two-dimensional lateral image based on this, and using this as a feedback signal to apply a voltage to the electrically controlled microsphere-enhanced liquid crystal layer. This invention introduces an electrically controlled microsphere-enhanced liquid crystal layer into the imaging path of a confocal microscope, achieving a significant enhancement in lateral resolution. By controlling the liquid crystal with an applied voltage, the equivalent refractive index can be dynamically adjusted.

The present invention relates to a method and system for measuring the three-dimensional topography of a metal hydrophobic surface based on white light microinterference, which belongs to the field of precision measurement, comprising: first measuring a sample, scanning the sample surface, and synchronously collecting a sequence of white light interference images containing surface profile information; using a bicubic interpolation algorithm to interpolate the collected white light interference pattern group to construct a high-resolution interference image sequence; subsequently, the time-frequency domain interference signal is analyzed by fast Fourier transform, and noise interference is effectively suppressed by combining filtering technology to accurately extract the envelope curve of the interference signal; and then the envelope peak is Gaussian fitted and the peak coordinates are located using the least squares method, and finally a high-precision three-dimensional surface topography is reconstructed. The present invention complements the advantages of the bicubic interpolation algorithm and the fast Fourier transform method, significantly improving the lateral resolution while maintaining the longitudinal resolution, and providing an effective technical means for the accurate characterization of the three-dimensional topography of the metal hydrophobic surface structure.

The invention discloses a single-molecule positioning microscopic imaging device and method based on structured light illumination. In an excitation path, a modulated laser beam emitted by a spatial light modulator generates a dynamic stripe illumination pattern on a sample plane, and three phase shift patterns are adopted in each transverse direction, so that six different patterns are generated; in the emission path, the fluorescence signal is coherently collected by a dual objective, while four phase images are captured, each image corresponding to a particular phase delay. By using the interference effect in the excitation path and the emission path, the improvement of the two-time transverse resolution and the five-time axial resolution is simultaneously realized in the single-molecule positioning microscope, the difference between the axial resolution and the transverse resolution is effectively bridged, and the isotropic nano-scale three-dimensional resolution is realized.

The present disclosure relates to ultrasound-based strategies and techniques that are specially designed for time-resolved simultaneous cardiac tissue visualization and intracardiac flow instability mapping. First, to achieve high-resolution tissues images while also acquiring flow data, we devised an acquisition scheme which consists of two batches. The first batch is dedicated to tissue imaging, where we transmit a series of diverging waves emitted from different virtual source locations. These pulses have a single pulse-cycle to optimize axial resolution and are coherently compounded for improving lateral resolution. This paradigm generates tissue images with an improved resolution, allowing for real-time guidance at frame rates up to 50 fps. The second batch is dedicated for flow imaging where all diverging waves are transmitted from the same virtual source location. These flow pulses have a 5-cycle pulse length for improved flow signal. The length of this batch can be adjusted, but our experiments use a length of 64. The final transmission scheme alternates between the tissue batch and flow batch.

The application discloses a kind of estimation method and system based on high frequency information gravity-magnetic anomaly lateral resolution, comprising the following steps: obtaining gravity-magnetic anomaly data, griding gravity-magnetic anomaly data, obtaining griding gravity-magnetic anomaly data;Low-pass filtering is carried out to the griding gravity-magnetic anomaly data, and regional gravity-magnetic anomaly data are obtained;Based on the griding gravity-magnetic anomaly data and regional gravity-magnetic anomaly data, subtract to obtain residual gravity-magnetic anomaly data;Change geometric scale factor, obtain residual gravity-magnetic anomaly data of different scales;The residual gravity-magnetic anomaly data of different scales are compared and analyzed, and the preset scale that presents residual gravity-magnetic anomaly distribution characteristics is obtained, and the estimation of gravity-magnetic anomaly lateral resolution is realized.The lateral resolution of gravity anomaly or magnetic anomaly estimated by the method can evaluate the related geological problems that can be solved by existing gravity-magnetic data, and can improve the efficiency of gravity-magnetic data processing and interpretation.

The present invention provides a sandbody distribution prediction method, device, and medium, relating to the field of seismic exploration technology. The method comprises: obtaining seismic response waves and logging data alongside a wellbore in a target area; using the seismic response waves and logging data alongside the wellbore, using a singular value decomposition algorithm, determining the correspondence between the seismic response wave components and different sedimentary facies in the target area; constructing a likelihood function describing the planar distribution probability of the sedimentary facies using the correspondence between the seismic response wave components and different sedimentary facies in the target area as prior information; determining the planar distribution probability of different sedimentary facies based on the likelihood function and the seismic response waves in the target area; grouping the seismic response waves corresponding to different sediments based on the planar distribution probabilities of different sedimentary facies to obtain multiple sample sets; and performing seismic wave inversion on each sample set to obtain the vertical thickness and planar distribution of the sandbody in the target area. The sandbody distribution prediction method provided by the present invention improves the lateral resolution of the sandbody.

A kind of vehicle-mounted ranging device and method, belong to distance detection technical field, device is by short coherence broadband light source, fiber coupler, wavelength division multiplexer, beam expander, optical splitter, lens, filter, area array camera and vehicle-mounted computer etc.; by vehicle-mounted computer real-time comparison two cameras image difference and the size of set threshold value, when vehicle-mounted computer determines that image difference is greater than threshold value, then it is explained that there is obstacle at the distance L in front of vehicle, vehicle-mounted computer issues alarm signal at this time.The present application adopts two light sources and two cameras, imaging twice in the same time, by the two images obtained are subtracted, eliminate interference fluctuation;The present application uses short coherence light interference technology, improves signal-to-noise ratio, can detect weak reflection signal;The present application selects broadband light source, longitudinal resolution is high, guarantees measurement accuracy while saves extra timing circuit;The present application uses area array camera to collect image, speed is fast, the number of imaging dot matrix is large, and lateral resolution is high.

This utility model discloses a photoacoustic probe and a photoacoustic imaging system. The photoacoustic probe includes a tube, a light guide, a signal line, a lens group, a reflective element, and an ultrasonic transducer. The light guide and the signal line pass through the tube along its axial direction. The signal line is electrically connected to the ultrasonic transducer. The lens group, reflective element, and ultrasonic transducer are all disposed within the tube and arranged sequentially along its axial direction. The lens group is located on the light-emitting side of the light guide and includes at least one curved lens. The light guide guides the light beam and directs it to the lens group. The lens group converges the light beam, directing it to the reflective element. The reflective element reflects the converged light beam, allowing it to pass through the tube and exit onto the target area within the imaging region. The ultrasonic transducer converts the ultrasonic waves received from the target area into electrical signals. By converging the light beam through the lens group, the size of the light spot illuminating the target area is reduced, thus improving the lateral resolution.

The present invention provides a method for improving the lateral resolution of a radar by simulating the working principle of retinal ganglion cells. The method specifically includes the following steps: step S1, the radar performs a rough scan until a suspicious target is found, and determines the center position of the suspicious target based on the echo generated after contacting the suspicious target; step S2, sets the scanning range of the radar based on the center of the suspicious target; step S3, transmits a predetermined waveform that the radar is ready to transmit based on the scanning range; step S4, based on the predetermined waveform, causes the radar to scan in a predetermined scanning mode and receive the echo corresponding to each scan, and organizes the echoes into an echo sequence; step S5, performs a second-order difference on the echo sequence to obtain an echo of a predetermined resolution; step S6, determines the number of suspicious targets based on the echo of the predetermined resolution; wherein the echo is expressed in the form of echo energy, the point with prominent echo energy is the contour point of the suspicious target, and the center of the contour point is the center of the suspicious target.

The invention relates to the technical field of optics, and discloses an optical assembly, a first light path intersects with a first light splitting surface and a second light splitting surface, the first light splitting surface intersects with a first split light to refract the first split light and form a second light path projecting along a second direction, and the second light splitting surface intersects with a second split light to form a second light path projecting along a second direction. The second light beam is refracted, and a third light path projected in the second direction is formed; the two first lens assemblies are arranged on the second light path and the third light path respectively so as to amplify and rotate the first split light and then project the first split light to the first area to form a first pattern, and to amplify and rotate the second split light and then project the second split light to the second area to form a second pattern. The transverse resolution of the first pattern and the second pattern is larger than the longitudinal resolution, and the first pattern and the second pattern are combined to form a long-strip-shaped picture. The invention provides an optical assembly for improving transverse resolution and picture and a head-up display system.

The application discloses a kind of for ship collision bridge body monitoring optical fiber probe imaging performance estimation method and system, it is related to optical fiber probe imaging performance evaluation technical field, it is applied to side-looking type optical fiber OCT probe;Side-looking type optical fiber OCT probe is optical fiber probe for ship collision bridge body damage monitoring;Wherein the method comprises: constructing the geometric model of side-looking type optical fiber OCT probe;Based on geometric model, the near-end mode field radius and far-end mode field radius of illumination beam are calculated respectively;If near-end mode field radius is greater than or equal to far-end mode field radius, then based on the first estimation formula group, the imaging performance of side-looking type optical fiber OCT probe is calculated;Imaging performance includes focusing depth and lateral resolution;If near-end mode field radius is less than far-end mode field radius, then based on the second estimation formula group, the imaging performance of side-looking type optical fiber OCT probe is calculated.The present application alleviates the technical problem that traditional estimation method exists and is difficult to accurately predict the imaging performance of optical fiber probe under different geometric parameter states.

The application provides a transverse high-resolution terahertz time-domain spectrum imaging method and system, and relates to the technical field of terahertz imaging. The method comprises the following steps: obtaining a terahertz time-domain pulse sampling signal; performing Fourier transform on the terahertz time-domain pulse sampling signal to obtain a frequency spectrum; performing inverse Fourier transform on the frequency spectrum after high-pass filtering and low-pass filtering processing to obtain a time-domain signal; establishing a point spread function; performing deconvolution operation on the time-domain signal and the time-domain form of the established point spread function to obtain an image reconstruction signal; and determining a transverse high-resolution terahertz time-domain spectrum image according to the image reconstruction signal of each sampling point in a scanning area and the time of flight of the terahertz pulse wave. Through the method, image blurring caused by terahertz beam distortion can be better eliminated, and the transverse resolution of the terahertz imaging system and the quality of the reconstructed image can be improved.

This invention relates to an isotropic three-dimensional super-resolution imaging method using a single objective lens, comprising the following steps: outputting a linearly polarized excitation beam through a picosecond pulsed laser and an outputting a linearly polarized loss beam through a nanosecond pulsed laser; adjusting the polarization direction and power of the excitation and loss beams using a half-wave plate and a polarizing beam splitter; incident the loss beam onto a spatial light modulator; modulating the light field by loading a preset phase diagram to generate three focal points with different topological charges, axial positions, and energy distributions; and modulating the polarization state of the focal points using a high-order vortex phase delay plate to separate the loss beams with different polarization components. This invention achieves an imaging resolution of less than 100 nm in both the lateral and axial directions, with similar lateral and axial resolution performance. In three-dimensional super-resolution imaging, it can accurately reflect the true three-dimensional structure of an object. The imaging resolution is directly proportional to the intensity of the loss beam; the stronger the loss beam intensity, the higher the three-dimensional imaging resolution.

The application discloses a single-photon three-dimensional imaging system based on surface array detection, which comprises a multi-beam laser point array module, a common-aperture scanning transceiver module, a synchronous control module, an image processing module and a transceiver coupling registration module, and provides a system registration method to solve the great difficulty in transceiver matching of a single-photon three-dimensional imaging system using multi-beam emission and array detector; the multi-beam laser point array module and the common-aperture scanning transceiver module are controlled by the synchronous control module to realize high-sensitivity detection and fast imaging of a target based on multi-beam two-dimensional laser point array scanning, and an image processing algorithm based on sub-pixel scanning and calculation imaging can effectively improve the lateral resolution of long-distance imaging under a limited divergence angle. The system and method of the application realize accurate matching of multi-beam illumination and array detection in long-distance single-photon three-dimensional imaging, greatly improve energy efficiency and measurement speed, and obtain a longer detection distance and higher imaging quality.