137results about How to "Imaging Realization" patented technology

The invention relates to a display screen and electronic equipment. The display screen is provided with a first display region and a second display region, wherein a pixel driving array in the seconddisplay region deviates from the second display region. In the display screen, pixels in the second display region can be driven to emit light by the pixel driving array in the second display region when an image is needed to be displayed, so that the second display region and the first display region simultaneously and normally display the image; and when imaging is needed, the transmittance of the second display region is improved due to the pixel driving array, deviating from the second display region, in the second display region, so that ambient light can smoothly irradiate and pass through the second display region of the display screen to achieve imaging. With the display screen provided by the invention, the non-display region of the display screen in the prior art can be omitted,the duty ratio of the screen is expanded, and the application feeling is optimized.

The invention discloses a near-infrared laser scanning confocal imaging system, which comprises a light path scanning unit and a control unit which adopt a confocal structure, wherein the light path scanning unit comprises a near-infrared laser source, a collimation and extension module, a laser optical filter, a dichroic reflector, a scanning galvanometer, an f-theta lens, a tube lens, an imaging objective lens, a fluorescent optical filter, a convergent lens, a pinhole, a detector and the like, the control unit comprises a motion control module used for controlling the scanning galvanometer, a data acquisition module used for acquiring an output signal of the detector, a data processing module connected with the motion control module and the data acquisition module, and the like. The method matched with the system is characterized in that a sample is marked with near-infrared quantum dots with the fluorescence emission spectrums between 932nm and 1250nm, and then the sample is detected by the near-infrared laser scanning confocal imaging system. According to the system disclosed by the invention, deep-level imaging of samples such as biological tissues can be accurately and efficiently realized, and the system has a simple structure and is easy to operate.

The invention provides a three-dimensional printer, a printing method of the three-dimensional printer and a printing device of the printing method. The printing method of the three-dimensional printer comprises the following steps: starting the three-dimensional printer which comprises a printing head for entity imaging and an ink jet head for color imaging; inputting a model file with target entity model data into a memorizer; slicing and layering according to the target entity model data through a processor, processing and obtaining a plurality of layering model data; performing entity imaging according to each layering model data through the printing head; performing color imaging on the layering model according to the layering model data in the same layer through the ink jet head. The invention provides the printing device and the three-dimensional printer using the method. By performing color imaging on each layering model, the colorful printing of the overall three-dimensional entity is achieved finally, then the structure of the three-dimensional printer is simplified, and the three-dimensional printer has the advanstages of low imaging cost, high color reproduction accuracy, high image resolution ratio, simple imaging method and the like.

The invention discloses a double helix electrode capacitance tomography sensor for measuring an annular space that belongs to the field of an electrical process tomography device. The sensor comprises a main structure part and a capacitance measurement part. The main structure part is composed of concentric inner and outer tubes and a connection bracket used for fixing position. An annular space between the inner and outer tubes is a measured space. The capacitance measurement part comprises detection electrodes, electrode end shields, shielding cases, a signal transmission cable, ECT signal acquisition equipment and connection wires. By the utilization of electrode sensor parts which are respectively spirally arranged on the inner and outer tube walls, three-dimensional imaging of the measured annular space is truly realized. Due to the sensor structure with electrodes uniformly distributed on the two tube walls, imaging of the annular space is realized, and the problem of weak capacitance signal is also improved. The invention is a big breakthrough of the ECT technology.

The invention provides a system and a method for observing micro-nano air bubbles in water body. The system comprises a model box, a laser device, a camera, a lens and a picture acquiring and processing module, wherein the model box is provided with a water filling nozzle, and can be filled with and contain the water body which is rich in micro-nano air bubbles, moreover, each face of the model box adopts different materials and colors, and the imaging definition of the micro-nano air bubbles in the water body is improved to the greatest extent; the laser device is located at the top of the model box, and is used for providing a light source needed for observation; the camera and the lens are arranged on one side of the model box, and are used for observing the micro-nano air bubbles in the water body; and the picture acquiring and processing module is connected with the camera, and is used for acquiring and processing pictures. The system and the method provided by the invention are simple, convenient, practical and high in observation accuracy.

The invention discloses a circular synthetic aperture radar imaging method, belonging to the technical field of electronic signal processing. The invention relates to a spatial remote sensing and air-to-ground observation information processing technology, in particular to an onboard circular synthetic aperture radar imaging technology. According to the imaging method, an original oblique plane echo is mapped to the ground plane by solving the inverse of a system kernel function, and the distribution of signals in a wave number domain is obtained by multiplying an azimuth frequency domain with a reference function, so that plane wave approximation is avoided, the problem that the size of an imaging area of the traditional polar format algorithm is limited can be solved, and the imaging of a large imaging scene can be realized; pseudo-polar coordinates are used for replacing rectangular coordinates as an intermediate interpolation transition matrix, and the distribution density characteristic of the signals in the wave number domain is considered, so that the interpolation precision is higher, the obtained image resolution is higher, and the high resolution imaging can be realized; the imaging process only involves one-dimensional interpolation, and fast algorithms such as chirp z transform (CZT) and inverse fast Fourier transform (IFFT) are adopted, so that the method has very high computational efficiency and can realize rapid imaging.

The invention provides an under-screen optical fingerprint imaging device. The under-screen optical fingerprint imaging device comprises a substrate provided with a light-emitting unit; a light sensing element which is arranged on one side of the substrate and is used for converting the light signal into an electric signal for imaging; a first diaphragm unit which is arranged on the side, deviating from the light sensing element, of the substrate and comprises a first 1/4 wave plate and a first linear polarizing film, and the first 1/4 wave plate is located between the first linear polarizingfilm and the substrate; a third 1/4 wave plate is arranged on one side, deviating from the substrate, of the first diaphragm unit, a third angle is formed between the optical axis of the third 1/4 wave plate and the polarization direction of the first linear polaroid, and the value of the third angle is 45 +/-5 degrees; a cover plate which is arranged on the side, deviating from the substrate, ofthe third 1/4 wave plate and provided with a light-transmitting area, and the light-transmitting area is used for being pressed by fingers of a user or getting close to the light-transmitting area. The under-screen optical fingerprint imaging device provided by the embodiment of the invention can effectively improve the imaging stability and quality.

The invention discloses a passive single pixel telescope imaging system, and belongs to an optical imaging field. The passive single pixel telescope imaging system comprises an imaging lens, a spatial light modulator, a light beam convergent lens and a data acquisition card, which are orderly arranged on a light path; the spatial light modulator is arranged at an imaging position of the imaging lens; the light beam convergent lens is located on a light path of an output beam of the spatial light modulator; the data acquisition card is provided with a photovoltaic conversion chip; the data acquisition card and the spatial light modulator are connected with a processor through a data line. The imaging system is simple in structure and low in environmental requirement; besides, the acquisition time can be effectively reduced and the recovery of target images under a low sampling rate can be realized. The invention further discloses a passive single pixel telescope imaging method. The imaging method is simple in recovery algorithm and fast in image reconstruction speed, and can shoot and reconstruct the images of large sizes, so that the imaging method has a higher application value in the macro fields like military, remote sensing satellite, astronomy and engineering detection, etc.

A design method for multi-layer metal dielectric film capable of realizing the imaging function is characterized by selecting incident wave; selecting two sets of metallic material and dielectric material with a certain thickness, alternatively arranging the metal and medium in two sets to form two kinds of multi-layer metal dielectric film structures, respectively computing the equivalent dielectric constant of the two kinds of multi-layer metal dielectric film structures based on equivalent dielectric constant of each material and the thickness of each film layer; realizing the variation of the value and plusminus of the dielectric constant in respective direction by designing the thickness of each film layer so as to make the optical wave diverge through the first set of multi-layer metal dielectric film structure and converge through the second set of multi-layer metal dielectric film structure; binding the divergent structure multilayer film and the convergent structure multilayer film together according to a specific thickness ratio to the multi-layer metal dielectric film structure device which can make the fine structure far less than the operating wavelength image so as to achieve the super resolution.

The invention discloses a rapid tumor tissue discrimination method based on a tissue surface lipid fingerprint spectrogram, and the method comprises the following steps: firstly, collecting lipid molecules on the surface of a tissue and keeping in-situ information of the lipid molecules; then, acquiring a lipid molecular characteristic fingerprint spectrum of the surface of the tissue by means of a laser desorption/ionization mass spectrometry platform under the condition of no matrix participation; then, establishing a discrimination model of various tumors based on a lipid characteristic fingerprint spectrogram of the surface of the tissue by combining a statistical analysis method, and judging subtypes of tumor tissues, normal tissues and various tumor tissues; finally, realizing the tissue molecular digital imaging without the slice by combining the mass spectrum imaging technology, and using the tissue molecular digital imaging to distinguish the tumor boundary; and the rapid tumor tissue discrimination method realizes rapid, efficient and high-accuracy clinical tissue identification, tumor subtype discrimination and tumor boundary imaging, improves the detection flux, and increases the stability of lipid molecule information on the surface of the tissue and the difference dimension in tumor tissue identification.

A process for preparing the super-paramagnetic nanoparticles dispersed in water easily includes such steps as mixing the polymer chelating agent with Fe ions, dripping alkali while reacting to generate inn oxide and continuously dripping alkali until pH=9-10.

The invention relates to a spatial self-focusing laser differential confocal Raman spectroscopy imaging detection method and a device thereof, and belongs to the technical fields of spatial optical imaging and spectral measurement. The spatial self-focusing laser differential confocal Raman spectroscopy imaging detection method comprises the following steps: performing nondestructive separation onRayleigh scattered lights and Raman scattered lights, accurately controlling a telescope system to automatically adjust a focus point through searching a response zero crossing point by using the characteristic of the zero crossing point of the differential confocal response curve of detector, accurately corresponding to the focus position, in order to make an excitation beam automatically focused on a measured object and obtain the spectral information of the focal point position of laser spots, and acquiring the image and pattern information of a target through the image detector; and the device realizes spatial automatic focusing spectral detection and image acquisition, so the method and the device can realize the spatial self-focusing spectrum and image detection of a sample. The method and the device have the advantages of automatic focusing, accuracy in positioning, large spatial range, high spectral detection sensitivity, and acquisition of the target image.

The invention provides an iterative ultrasonic tomography method for the axial flow field imaging in a pipeline. The method comprises the steps of constructing a dense sound channel network by ultrasonic sensors large in emission angle and arranged on the upstream and downstream cross sections of a pipeline, exciting to receive an ultrasonic signal, acquiring the average flow velocity of the axial flow field of the pipeline along each sound channel through calculating the time for the ultrasonic wave to spread in the clockwise direction of each sound channel so as to obtain a plurality of original projection data, grouping the projection data into parallel sound channel groups for interpolation and subdivision, expanding the number of projection data, discretizing a to-be-constructed pipeline axial flow velocity field image, and reconstructing a pipeline axial flow velocity field through the iterative tomography of projection data in the prior constraint condition. According to the technical scheme of the invention, on the condition that the original fluid state is not disturbed, the distribution of the axial flow field in the pipeline can be detected. Furthermore, the high-precision reconstruction of the axial flow field of the pipeline is realized.

The present invention provides a large-relative aperture optical system. The large-relative aperture optical system has the advantages of few consumed materials, small size and compact structure, and can effectively eliminate inter-band and intra-band chromatic aberration in a dual-band system. The optical system includes a front fixed lens assembly, an diaphragm, an intermediate fixed lens assembly, a rear fixed lens assembly and a detector which are sequentially distributed from an object side to a focal plane and are fixedly connected with one another; the front fixed lens assembly, the diaphragm, the intermediate fixed lens assembly and the rear fixed lens assembly share the same central axis; the front fixed lens assembly has positive focal power and comprises a first positive lens, a first negative lens and a second negative lens which are distributed sequentially along the central axis from the object side to the focal plane coaxially; the intermediate fixed lens assembly has negative focal power and comprises a second positive lens and a third negative lens which are distributed sequentially along the central axis from the object side to the focal plane coaxially; the diaphragm is located between the third negative lens and the second positive lens; and the rear fixed lens assembly is a third positive lens.

The invention belongs to the technical field of molecule imaging, and relates to a glioma-targeting molecule magnetic resonance contrast agent as well as a preparation method and an application thereof. The contrast agent comprises two complexes, namely a biotinylated monoclonal antibody and a streptavidin Gd-coated spatial stable immune liposome; and the two complexes are reacted and combined toform MAb-X-Y-Z-Gd. The experiment results show that: the molecular probe can combine with glioma neogenesis blood capillaries without passing through the blood-brain barrier while actively targeting the tumor neogenesis blood vessels, and an MRI (magnetic resonance imaging) signal is amplified by a biotin-avidin system, thereby achieving high-resolution glioma-specific targeting imaging; and the biotin-avidin-mediated two-step imaging method has effectivity, thereby proving a new nondestructive method for glioma early-stage diagnosis, the research of biological behavior, and anti-vessel survival treatment targeting and treatment effect evaluation.

The invention discloses a variable PRI squint bunching SAR imaging method and device, equipment and a storage medium. The invention relates to the technical field of synthetic aperture radars. According to the technical scheme, the method comprises the steps of recovering a range migration form of radar echo data in a variable PRI mode; removing azimuth spectrum aliasing and range direction time domain aliasing of the radar echo data; restoring the sampling uniformity of azimuth signals of the radar echo data; performing phase compensation on the restored radar echo data; and carrying out imaging on the radar echo data subjected to phase compensation. According to the technical scheme provided by the embodiment of the invention, under-sampling under the condition that the azimuth signal ofthe radar echo data under the variable PRI mode is non-uniform can be restored under the condition that the calculation efficiency is ensured, so that the processing efficiency of the frequency domain imaging algorithm is improved.

The present invention discloses a bistatic foresight SAR frequency domain imaging method based on frequency spectrum optimization modeling. The method comprises the following steps: S1, performing data preprocessing, and obtaining echo signals; S2, performing two-dimensional Fourier transform of the echo signals, establishing the point target response optimal two-dimensional frequency spectrum mode of the system, and solving the point target response two-dimensional frequency spectrum through adoption of a difference evolution optimization method; S3, performing rough matching focusing of the point target response accurate two-dimensional frequency spectrum; S4, performing distance frequency transformation of the two-dimensional frequency spectrum; and S5, performing two-dimensional inverse Fourier transform of the two-dimensional frequency spectrum after the distance frequency transformation, and obtaining final complex images. The problem is overcome that the current imaging algorithm cannot process the space variation of the bistatic foresight SAR distance to the nonlinearity, an accurate bistatic foresight SAR two-dimensional frequency spectrum is obtained through the difference evolution optimization method, and the echo signals are subjected to imaging process on the two-dimensional frequency domain according to the point target response accurate two-dimensional frequency spectrum to realize the accurate focusing of the bistatic foresight SAR original data.

The invention discloses a device and a method for sliding type multi-layer magnetic induction tomography. According to the method of sliding type multi-layer magnetic induction tomography, a measured object is put on a plate, a measuring coil array is driven to surround the measured object and the plate, the coil array can slide on the plate so that the central surface of the coil array is corresponding with different faults of the object, one magnetic induction tomography data collection is carried out when the coil array is corresponding with one fault of the object, the conductivity distribution map of the object at the fault is rebuilt through imaging algorithm, data collection can be carried out for a plurality of times by sliding the coil array or plate and a conductivity distribution map at the fault is rebuild each time, a plurality of conductivity distribution maps of the object at adjacent faults are obtained though a plurality of times of data collection and maps rebuilding, and the overall conductivity distribution condition of the object is obtained. The device and the method for sliding type multiple layer magnetic induction tomography has the advantages that conductivity distribution maps of the measured object at different faults are obtained conveniently, and multiple layer non-contact electrical impedance tomography is achieved.

The invention discloses a near space circular synthetic aperture radar rapid back-direction projection imaging method. In view of the problem of near space circular synthetic aperture radar rapid imaging, the method replaces a phase error in coherent imaging method with a pixel amplitude error as the evaluation criterion of imaging precision, approximately expands through low order of Green function which is based on chebyshev nodes and lagrange interpolation according to the principle of minimum mean square error, switches the problem of calculation of sub aperture projection to the problem of calculation of limited number of approximate expansion coefficients, and reduces as much as possible the number of expansion coefficients under the condition of meeting the focusing accuracy so that algorithm computational complexity is reduced, and then accomplishes the imaging from coarse focusing to fine focusing by applying recursive computation. Compared with the existing circular SAR back-direction projection imaging method, the near space circular synthetic aperture radar rapid back-direction projection imaging method has the advantages that computing speed is greatly improved, big scene imaging is achieved and imaging accuracy is much higher.

The invention discloses an ultrasonic transducer array, an ultrasonic intervention treatment system and an ultrasonic ablation catheter, and belongs to the technical field of medical instruments. The ultrasonic transducer array comprises a first ultrasonic transducer set including a first ultrasonic transducer for ultrasound ablation, a second ultrasonic transducer set including a second ultrasonic transducer for ultrasonic imaging, a metallic conductive support, wherein the first ultrasonic transducer and the second ultrasonic transducer are jointly installed, and which is respectively connected with the grounding ends of the first ultrasonic transducer and the second ultrasonic transducer, an ablation electrode leading-out wire set respectively connecting with the electrode end of the first ultrasonic transducer, an imaging electrode leading-out wire set respectively connecting with the electrode end of the second ultrasonic transducer, and a common-ground electrode leading-out wire connecting with the metallic conductive support. The ultrasonic transducer array has the advantages of good positioning and ablation effects, and realizes mixing frequencies work. The ultrasonic transducer array can be used for ultrasound ablation and internal lumen imaging.