19 results about "Area detector" patented technology

According to the method for regulating and controlling the current density of the superconducting micron wire, the hole shape with a certain size is designed in the linear area of the winding superconducting micron wire, so that the current density of the superconducting micron wire is redistributed, the current density at the corner of the winding superconducting micron wire is reduced, and the current crowding effect of the superconducting micron wire is effectively relieved. According to the current density regulation and control method, the superconducting micron wire is allowed to work under higher overall bias current without causing too high dark counting, so that the photon counting rate upper limit of the detector is improved. According to the invention, the detection efficiency of the superconducting micron wire can be improved, dark counting and time jitter are reduced, the structure is simple, the current density is flexible to regulate and control, meanwhile, the device is easy to expand to the development of a large photosensitive area detector, and the device has a wide application prospect in the fields of quantum communication, bioluminescence imaging, dark substance detection and the like.

The application provides a multi-geometry diffraction guiding device and an X-ray diffraction equipment, the device is used for guiding a diffraction beam to reach a target detector in the X-ray diffraction equipment; the device comprises: a shell, a parallel light path component and a quasi-focusing light path component; the parallel light path component and the quasi-focusing light path component are arranged on the inner side of the shell; the shell is provided with a mounting connecting part corresponding to the target detector; when the diffraction beam is a parallel beam geometry, the parallel light path component is configured to guide the diffraction beam to reach a first detection area of the target detector; when the diffraction beam is a quasi-focusing beam geometry, the quasi-focusing light path component is configured to guide the diffraction beam to reach a second detection area of the target detector. The application can realize fast and efficient mode switching to measure diffraction beams of different geometries, optimize the use efficiency of a large-area detector, and avoid or eliminate manual or mechanical intervention on optical devices during switching.

The present disclosure relates to a system for imaging. The system may include a supporting assembly and a detector assembly. The supporting assembly may include a detection region to accommodate a subject. The detector assembly may surround the detection region. The detector assembly may be configured to detect radiation rays emitted from the subject located within the detection region. The detector assembly may include a plurality of detector rings. Each detector ring may include a scintillator array and a plurality of photosensors. The plurality of detector rings may be arranged on the supporting assembly in an axial direction of the supporting assembly to form an axial field of view (FOV) having a length no less than 0.75 meters.

This invention relates to a large field-of-view diversity receiver for underwater wireless optical communication, belonging to the field of underwater optical communication technology. It includes a top lens-detector module pointing vertically towards the zenith and four surrounding side lens-detector modules. The four side modules are evenly distributed along the circumference and have a uniform tilt angle relative to the zenith direction, causing the spatial fields of view of each module to partially overlap, thus synthesizing a large composite field of view. Each module consists of a defocused condenser lens and a photodetector. This invention avoids the trade-off between gain and field of view limitation of traditional single-lens receivers, relaxing communication alignment requirements while retaining the high-speed transmission advantage of small-area detectors. Combined with a signal combining algorithm, it can effectively combat underwater signal fading, making it suitable for underwater wireless optical communication systems.

The invention discloses a Compton scattering imaging device based on focusing collimation and a defect detection method. The Compton scattering imaging device comprises a ray source used for generating X-rays or gamma-rays with certain energy and angle distribution; the front collimator is used for collimating rays output by the ray source to form a beam to perform point-by-point scanning on a measured object; the rear collimator with the focusing structure is formed by splicing a plurality of focusing collimation structures which are distributed and arranged, effective light-passing axes of the focusing collimation structures are converged in the same focusing area, and the rear collimator with the focusing structure is used for receiving scattering signals generated in the effective light-passing axis direction within the range of the focusing area with the set depth of the measured object; the focusing area covers the scanning point; the large-area detector is used for receiving the scattering signal output by the rear collimator and converting the scattering signal into an analog electric signal; and the electronics acquisition system is used for receiving the analog electric signal, converting the analog electric signal into a digital signal, processing the digital signal and transmitting the processed digital signal to the upper computer to generate an internal structure image of the measured object. According to the invention, the spatial resolution capability is greatly improved.

High-resolution microscopy method for the three-dimensional position determination of objects, in particular individual fluorophores, preferably for spatially high-resolution luminescence microscopy of a sample (7) which is labelled with labeling molecules (1) which can be activated or switched with a signal such that they can only be excited to emit certain luminescence radiation in the activated state, wherein the method comprises the following steps: a) Introducing the signal onto the sample (7) such that only a subset of the labeling molecules (1) present in the sample (7) are activated, wherein the sample (7) contains subregions in which activated labeling molecules (1) are at least as far apart from the nearest neighboring activated labeling molecules (1) as is greater than or equal to a length which results from a predetermined optical resolution, b) Excitation of the activated molecules (1) to emit luminescence radiation, c) Detection of the luminescence radiation with the predetermined optical resolution, and d) Generating a single image from the luminescence radiation recorded in step c), wherein the geometric locations of the luminescence-emitting labeling molecules are determined with a spatial resolution increased above the predetermined optical resolution, where the steps are repeated several times and the resulting individual images are combined to form a complete image, characterized by the fact that an object is imaged via an imaging system (OB, TL) with a microscope objective (15, OB) onto an area detector (5, CCD) consisting of individual detector elements, wherein at least one microlens arrangement (ML, ZL), which is partially located in front of the detector elements, images a different object plane (OE1) onto the detector elements in the direction of light behind the microlenses than onto detector elements in front of which there are no microlenses.

The disclosure provides a low-orbit neutron and gamma-ray detector group, a detection device and a detection method. The detection device is a small-volume, small-mass, low-power and high-speed neutron / gamma spectrometer based on a multi-layer single / dual sensitive area Si detector and a cadmium zinc telluride (CZT) detector array. The neutron / gamma spectrometer can be carried on a small satellite as an independent load to measure thermal neutrons, fast neutrons below 20 MeV and gamma rays. The cooperation between different layers of the detector group in the detection device forms multiple anticoincidence groups, improving the accuracy of energy spectrum inversion. The detection method proposes a pile discarding algorithm, thereby avoiding the interference caused by signal overlap and improving the system resolution of the entire neutron / gamma spectrometer.

A light sheet microscope for illuminating a sample arranged in an object plane on a sample carrier, comprising: an illumination device having an objective for illuminating the sample via an illumination beam path with a first light sheet, which intersects the sample volume in a first light sheet plane, the first light sheet plane intersecting the object plane at a skew first illumination angle (α), and a detection device for imaging of light coming from the sample, having an objective, the focal plane lying in the sample volume parallel to or in the object plane, and an area detector having a detector plane. The area detector includes a first slit stop in the detection beam path upstream of the area detector so as to mask out such regions of the sample volume which are illuminated by the first light sheet but lie outside the focal plane of the detection objective.

An image processing apparatus includes an area setter configured to set a target area in a first image among a plurality of captured images acquired by imaging at different time from each other, an area detector configured to detect a corresponding area relevant to the target area in a plurality of second images among the plurality of captured images, a focus state acquirer configured to acquire focus states of the target area and the corresponding area, and a classification processor configured to perform classification processing that classifies the plurality of captured images into a plurality of groups according to the focus states.

The invention provides a traffic flow speculation method fusing curvature gradient, and relates to the technical field of traffic flow speculation. The method comprises the following steps: firstly, acquiring traffic data of a visible area detector in a road network and data of a geographic information system; curvature and gradient characteristics of each road section are extracted, a geographically enhanced road network map structure is constructed, and edge weights between nodes are dynamically generated according to curvature differences and gradient differences; * jointly inputting the traffic data as node features and the graph structure into a graph neural network model, carrying out space-time modeling on the model through a graph convolution operator special for curvature and gradient, and explicitly fusing road alignment constraints to capture a traffic flow propagation rule; and finally, outputting a predicted value of the traffic state of the monitored blind area road section to realize dynamic speculation. According to the method, the problem of inaccurate traffic state perception caused by monitoring blind areas under complex terrains is effectively solved, and the speculation precision and reliability are improved.

The invention relates to a spark detector for extraction and conveying systems of combustible materials. Such spark detectors serve for the early detection of incipient fires and have a detector element 2, which is designed as an optical sensor. The small-area detector element is protected against contamination by the transported materials by a flat protective glass pane. According to the invention, the flat protective glass pane is replaced by an optical arrangement for generating a focal point, in particular by a converging lens, which causes the electromagnetic radiation 3 to be detected to be focused directly onto a focal point, or in its vicinity, on the surface of the detector element 2. This significantly increases the sensitivity of spark detector 1.

A damage information detection system as an example of the present disclosure comprises: a feature amount extractor configured to extract a feature amount from a vehicle image in which a vehicle is captured; a damaged area detector configured to detect a damaged area where damage is present in the vehicle based on the feature amount; a damage depth detector configured to detect relative depth of the damage to a case where the damage is not present based on the feature amount; and a damage characteristic detector configured to detect a characteristic of the damage based on the feature amount, the damaged area, and the relative depth.

An image processing device and method are disclosed. The image processing device includes a first image generator configured to generate a first image and a second image using an input image; a reference area detector configured to search for a first reference area most similar to a target area of the input image in the first image, and search for a second reference area most similar to the target area in the second image; a correction area determiner configured to determine a target correction area that is more similar to the target area from among a first correction area located in an area corresponding to the first reference area of the input image and a second correction area located in an area corresponding to the second reference area of the input image; and a second image generator configured to generate a third image using the target correction area.

The present application relates to the technical field of battery detection, in particular to a battery in-situ characterization system and detection method based on XRD and Micro-CT, comprising an X-ray device, an in-situ battery sample device and a two-dimensional area detector arranged along the optical path in sequence, the in-situ battery sample device is connected to a rotating platform through a multi-pose adaptive clamp assembly, the center line of the in-situ battery sample device coincides with the rotation axis of the rotating platform, the in-situ battery sample device is a plunger type pressurized in-situ test battery, the middle part of the plunger type pressurized in-situ test battery is provided with an electrode sheet assembly, and both sides of the electrode sheet assembly are provided with high-transmittance windows. The present application combines the multi-pose adjustable clamp with the plunger type pressurized in-situ battery, meets the optimal optical path conditions of Micro-CT imaging and XRD crystal structure analysis respectively under the premise of not disassembling and not destroying the in-situ environment, and realizes multi-scale, dynamic and correlated characterization under electrochemical working conditions.

The invention provides a linear CT imaging system which can be applied to the field of radiation imaging. The system comprises a ray source assembly used for generating an X-ray beam to form a scanning area; the detector assembly is used for detecting projection data formed after the ray beam penetrates through the scanning object in the process that the scanning object penetrates through the scanning area; the imaging unit is used for generating a computed tomography image of the scanning object according to the projection data; wherein a scanning object continuously moves along a preset conveying direction in the process of penetrating through a scanning area, and the radiation source assembly has a static beam-out state and a movable beam-out state which are located at different positions relative to the detector assembly in the process of generating an X-ray beam to form the scanning area. The radiation source assembly forms a plurality of overlapped scanning areas in the static beam-out state and the moving beam-out state. The invention further provides a linear CT imaging method.

The invention provides a semiconductor structure and a forming method thereof, the semiconductor structure comprises an SOI substrate, the SOI substrate comprises a top silicon layer, the top silicon layer comprises a detector region, and the detector region comprises a first region, a second region surrounding the first region and a third region surrounding the second region; the detector through hole is located in the top silicon layer of the detector area, and the bottom surface of the detector through hole is higher than the bottom surface of the top silicon layer; the photoelectric detector is located in the detector through hole, and the photoelectric detector comprises a second doping layer located in the first region, an epitaxial layer located in the second region and a first doping layer located in the third region. The invention provides a semiconductor structure and a forming method thereof, which can effectively reduce the transit time of photon-generated carriers, improve the bandwidth, reduce the size of a device by multiple times and facilitate the improvement of the integration level.

The application provides a traffic flow prediction method fusing curvature gradient, and relates to the technical field of traffic flow prediction. The method first acquires traffic data and geographic information system data of visible area detectors in a road network; extracts curvature and gradient characteristics of each road section, and constructs a geographic enhanced road network graph structure, wherein the edge weight between nodes is dynamically generated according to the curvature difference and the gradient difference; the traffic data is input into a graph neural network model as node features and graph structure, the model performs spatio-temporal modeling through a graph convolution operator dedicated to curvature and gradient, and explicitly fuses road alignment constraints to capture traffic flow propagation rules; finally, the prediction value of the traffic state of the monitored blind area road section is output, and dynamic prediction is realized. The application effectively solves the problem of inaccurate traffic state perception caused by monitoring blind area under complex terrain, and improves the prediction accuracy and reliability.

The invention discloses a movable medical scattering protection device, belongs to the technical field of medical ray protection assistance, and aims at solving the problems that in the interventional diagnosis and treatment process, a ray protection instrument cannot be attached to an operating table, so that the ray protection effect is poor, and the ray dose of a scattering area and a protection area is difficult to detect. A front blocking lead curtain flatly attached to an operating table is fixed to the front face of the L-shaped support, a main body rack is fixed to the top face of the L-shaped support, a transparent side lead plate is fixed to the inner wall of the main body rack, and a scattering protection area detector and a display screen are fixed to the top of one side face of the transparent side lead plate; in the radiation diagnosis and treatment process, a common working area of medical staff in an operating room is divided into scattering protection areas through lead-containing materials so as to reduce scattering damage, the adopted transparent lead plates do not affect the view field of the medical staff, the light transmittance performance is good, and the radiation diagnosis and treatment instrument is reasonable in structural design, convenient to produce and install and simpler and more convenient to use.

A kind of cone beam CT equipment radiation source focal point center position calibration block, including pressing plate A, pressing plate B;Multiple heavy metal material thin plates and multiple wave-transparent material thin plates are placed alternately superimposed, tiled between pressing plate A, pressing plate B, multiple heavy metal material thin plates and multiple wave-transparent material thin plates between pressing plate A, pressing plate B are tightly laminated by fastening bolt, form multiple slit passageways.A kind of cone beam CT equipment radiation source focal point center position calibration method, comprising the following steps: S1: establishing plane rectangular coordinate system in area imaging of area detector;S2: the imaging position x-axis coordinate calibration of radiation source focal point center on area detector;S3: the imaging position y-axis coordinate calibration of radiation source focal point center on area detector;S4: complete the imaging position calibration of radiation source focal point center on area detector.