99 results about "Lateral resolution" patented technology

The invention discloses a PCB (printed circuit board) back drilling stub length detection device and method, and belongs to the technical field of PCB detection, the PCB back drilling stub length detection device comprises a broadband light source, the output end of the broadband light source is connected with an optical fiber coupler, and one end, deviating from the broadband light source, of the optical fiber coupler is respectively connected with a first optical fiber collimator and a second optical fiber collimator; the first optical fiber collimator is provided with a lens and a reflector on an optical transmission path; the second optical fiber collimator is provided with a galvanometer on a light transmission path, and a scanning lens is arranged in the light emitting direction of the galvanometer; and the optical fiber coupler is also connected with a spectrograph. On the basis of the low-coherence light interference principle, the PCB back drilling stub length detection device is designed, the output power and the output bandwidth of a broadband light source are correspondingly adjusted, the insertion loss of an optical fiber coupler is controlled, the collection rate of a spectrograph is adjusted, finally, the axial resolution reaches 5 micrometers, the transverse resolution reaches 10 micrometers, and the requirements that the diameter is smaller than 0.1 mm, and the detection precision is larger than 0.1 mm can be met. And detecting the stub length of the deep micropore with the depth of less than 10mm.

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.

The present invention relates to a Rayleigh wave dispersion curve inversion method and system based on geological statistics, and belongs to the technical field of seismic shear wave velocity inversion. First, an inversion equation is constructed based on a dispersion equation, and iterative optimization is performed using the inversion equation to obtain the first seismic shear wave velocity structure of each station. Then, multiple second initial seismic shear wave velocity structures of each inter-station point to be estimated are determined based on the first seismic shear wave velocity structure and position of all stations, and the second Rayleigh wave dispersion curve is calculated using the dispersion equation. Finally, all the second Rayleigh wave dispersion curves corresponding to the inter-station point to be estimated are used as input, and the optimal second Rayleigh wave dispersion curve is determined using the second objective function to determine the second seismic shear wave velocity structure of each inter-station point to be estimated. The present invention can simultaneously obtain the seismic shear wave velocity structure of stations and stations, and can greatly improve the lateral resolution.

The invention provides a pre-stack seismic inversion method and device, electronic equipment and a storage medium. The method comprises the steps of obtaining multiple pre-stack seismic angle stack data, target layer position interpretation data and logging data; synthetic record calibration is carried out to obtain synthetic record calibration data and seismic wavelets corresponding to each piece of pre-stack seismic angle superposition data, and a seismic wavelet matrix is constructed; based on the seismic wavelet matrix, calculating to obtain a time domain positive operator; based on the frequency spectrum of each seismic wavelet, calculating to obtain a frequency domain positive operator; according to the pre-stack seismic angle superposition data, correlation parameters are obtained through calculation; and constructing a target function, and determining a pre-stack seismic inversion result at least according to the correlation parameters, the time domain forward operator, the frequency domain forward operator, the pre-stack seismic angle superposition data and the target layer position interpretation data. Based on the technical scheme of the invention, the longitudinal resolution and the transverse resolution of the elastic parameter inversion can be improved.

The invention discloses a multiphoton up-conversion super-resolution microscopic imaging method based on microsphere super-lens enhancement, which utilizes the super-resolution advantage of a microsphere super-lens and the nonlinear response advantage of a lanthanide doped rare earth up-conversion nano material to reduce the saturation excitation power of the rare earth nano material. And super-resolution imaging under the condition of a low-magnification and low-numerical-aperture objective lens is realized. An example verifies that under the condition that system complexity is not increased, excitation powers of 455 nm and 808 nm radiation fluorescence of an up-conversion nano material are respectively reduced by 15.40 times and 23.44 times, fluorescence imaging resolutions of 455 nm and 808 nm can be respectively improved by 3.14 times and 3.6 times under a 10x 0.25 NA objective lens, and corresponding transverse resolution limits can respectively reach 358.20 nm and 480.02 nm, so that the fluorescence imaging resolution of the up-conversion nano material can be improved by 3.14 times and 3.6 times under a 10x 0.25 NA objective lens. The method has the advantages of simple imaging system, low cost and good imaging effect, and is of great significance to biological application research.

The invention relates to a planar active focusing air coupling ultrasonic transducer, and belongs to the technical field of piezoelectric ultrasonic transducers, and the planar active focusing air coupling ultrasonic transducer is characterized in that a piezoelectric plate and a matching layer are arranged in a shell; the rear cover plate covers the tail end of the shell; the interface is arranged on the shell; a plurality of concentric annular structure electrodes are arranged on the first surface of the piezoelectric plate; the width of each concentric ring in the plurality of concentric ring structure electrodes is gradually increased from outside to inside; a second surface of the piezoelectric plate is provided with a second electrode; and the piezoelectric plate is connected with the interface through leads led out from the plurality of concentric ring-shaped structure electrodes and the whole-surface electrode. According to the plane active focusing air coupling ultrasonic transducer provided by the invention, active focusing of a plane acoustic beam is realized by changing the electrode structure of the piezoelectric plate and arranging a plurality of concentric annular electrode structures on the single surface of the piezoelectric plate, and the plane acoustic impedance matching layer with uniform thickness is matched; and the sensitivity of the focusing air coupling transducer is improved under the condition that the transverse resolution of the transducer is not influenced.

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 discloses a spectral confocal efficient three-dimensional measurement device and method based on a spatial light modulator. The device comprises an illumination module and a detection module. The illumination module comprises a white light LED light source, a collimator, an LED condenser, a digital micromirror device DMD and a dispersion objective lens; the detection module comprises an imaging objective lens, a CCD detector and computer processing equipment. According to the invention, traditional point-by-point spectrum confocal measurement is expanded to area array type measurement, so that the measurement speed can be effectively improved; meanwhile, different from a scanning type or fixed pinhole type parallel measurement scheme, the invention uses a pinhole array with controllable diameter and spacing, thereby improving the flexibility and lateral resolution of measurement.

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.

The invention discloses a method for improving OCT (optical coherence tomography) axial and transverse resolution, and belongs to the field of deep learning and signal processing. The method comprises the following steps: step S31, acquiring narrowband interference spectrums of different wavebands of the same object by using a variable waveband light source module, and filling a gap region by using a trained spectrum gap filling neural network to obtain a broadband wave number-depth domain interference spectrum; performing short-time inverse Fourier transform to obtain a broadband wave number domain interference spectrum, and finally performing fast Fourier transform to obtain an axial high-resolution A-Line; and S32, transversely splicing the axial high-resolution A-Line obtained in the step S31 to obtain a transverse low-resolution cross section, inputting the trained conditional diffusion model to generate a transverse high-resolution cross section, and obtaining a high-resolution three-dimensional OCT image. According to the invention, the imaging quality can be improved without hardware upgrading, and the axial and transverse resolution can be obviously improved in a low-cost manner.

The invention discloses an ultrasonic focusing probe. The ultrasonic focusing probe comprises a shell, a piezoelectric wafer, a spherical acoustic lens, a functional layer and a conducting medium, an accommodating space is formed in the shell; the piezoelectric wafer is arranged at the upper part of the accommodating space and is connected with a wire; the spherical acoustic super lens is coaxially arranged below the piezoelectric wafer, and a gap is formed between the spherical acoustic super lens and the piezoelectric wafer; the functional layer is arranged at the lower end of the shell and is constructed into the lower end surface of the shell; and the conductive medium is filled in the accommodating space and wraps the spherical acoustic super lens. According to the ultrasonic focusing probe, the spherical acoustic super lens is adopted, the focus width is narrower, and the transverse resolution of ultrasonic imaging can be improved. The focus energy of the spherical acoustic super lens is larger, and the focusing energy gain reaches more than 20dB, so that the contrast ratio of ultrasonic imaging can be improved. The spherical inner core and the spherical outer shell form a core-shell structure, and the focal length and the focal width of the ultrasonic focusing probe can be changed through the sizes of the spherical inner core and the spherical outer shell.

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 sand body distribution prediction method, equipment and a medium, and relates to the technical field of seismic exploration. The method comprises the following steps: acquiring seismic response waves and logging data beside a hoistway in a target area; based on the seismic response waves beside the hoistway and the logging data, a singular value decomposition algorithm is adopted, and the corresponding relation between the seismic response wave components of the target area and different sedimentary facies is determined; a likelihood function used for describing the sedimentary facies plane distribution probability is constructed by taking the corresponding relation between the seismic response wave component of the target area and different sedimentary facies as prior information; determining plane distribution probabilities of different sedimentary facies based on a likelihood function and the seismic response waves of the target area; based on the plane distribution probabilities of different sedimentary facies, grouping seismic response waves corresponding to different sedimentary facies to obtain a plurality of sample sets; seismic wave inversion is carried out based on each sample set, and the vertical thickness and plane distribution of the sand body in the target area are obtained. According to the sand body distribution prediction method provided by the invention, the transverse resolution of the sand body is improved.

Method for single molecule localization microscopy (SMLM) based on conventional fluorescent binder probes, including primary or secondary antibodies, that are applied in a gradual stepwise fashion to a fixed biological sample. In each step of the process, a low dose of the probe is applied in solution to the fixed biological sample to sparsely label target epitopes followed by sample washing to remove the free probe. The remaining bound fluorescent probes that are sparsely distributed over the sample are then imaged until they are photobleached. The high light collection efficiency from each probe in this approach (limited only by photobleaching) enables few Ångstrom lateral resolution and few nm axial resolution. Photobleaching of the probes at the end of each step generates a clean slate for application of the next step in the process, as well as the possibility for applying one or more probes in a consecutive fashion to the same sample for serial SMLM.

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 present invention discloses a method and system for optimizing the station layout of a space target T / R-R type radar imaging system. The method includes determining the prior information of the space target; based on the prior information of the space target, determining the monostatic ISAR imaging plane when the T / R station observes alone; determining the bistatic ISAR imaging plane when the T / R station and the R station observe in a bistatic mode; taking the minimum angle formed between the bistatic ISAR imaging plane and the monostatic ISAR imaging plane as the objective, establishing a station layout optimization function; solving the station layout optimization function to determine the optimal deployment position of the R station. The present invention takes the minimum angle between the two imaging planes as the objective function, solves to determine the optimal deployment position of the receiving station R station. The angle between the two imaging planes is as small as possible, effectively expanding the spatial spectral domain, improving the data fusion efficiency, and further improving the lateral resolution of the T / R-R type radar imaging system, which can provide theoretical support for improving the fusion imaging quality of the T / R-R type radar imaging system.

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 discloses a three-dimensional measuring device based on spectral dispersion, including: an illumination component for outputting incident light; a dispersion objective lens component for expanding the dispersion of the incident light, so that light of different wavelengths are respectively focused on the corresponding measuring points of the measured object, and receiving the outgoing light of different wavelengths reflected by the measuring points; a filtering component, including: a first pinhole array and a second pinhole array at equidistant conjugate positions on the optical path, the first pinholes and the second pinholes are respectively arranged in a staggered manner, and light of different wavelength sets pass through the corresponding first pinholes and the second pinholes respectively; a spectroscopic imaging component for receiving the outgoing light passing through the pinholes, and respectively focusing on the image plane coordinates corresponding to the pinholes and the measuring points on the imaging plane. It can solve the problem that the existing three-dimensional measuring equipment needs to use a row of holes array to filter out stray light, and the lateral resolution is low due to the limitation of the row of holes period.

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.