107 results about "Optical probing" patented technology

The invention discloses a wafer high-precision alignment mechanism, and relates to the technical field of semiconductor manufacturing and packaging, the wafer high-precision alignment mechanism comprises a casing and a vertical box integrally and fixedly connected to the upper part of the rear side of the casing, a cantilever is fixedly connected to the center of the upper part of the front side of the vertical box, and a detection mechanism for performing optical detection on a wafer is arranged between the cantilever and the upper wall of the casing. A circular movable hole is formed in the upper wall of the machine shell, the central axis of the movable hole is located on the central axis face of the cantilever, and an alignment mechanism used for adjusting the position of the wafer is arranged in the movable hole. By arranging the cleaning assembly and adopting a closed-loop design combining blowing and suction, the invention has the following remarkable beneficial effects: firstly, the structure forms an air curtain barrier with directional flow through the synergistic effect of positive-pressure blowing and negative-pressure suction, not only can dust on the mirror surface of the optical probe be continuously removed, but also pollutants can be actively discharged from the inside of equipment, so that the cleaning efficiency is greatly improved; the secondary pollution is fundamentally avoided, and the thoroughness and reliability of cleaning are greatly improved.

The embodiment of the invention provides a small target dynamic anti-interference identification method and system based on standard-loaded multi-sensor fusion, and the method comprises the steps: collecting multi-source data of a port channel through a standard-loaded optical detection terminal, a millimeter-wave radar and an AIS device; performing visual enhancement and radar anti-interference processing on the multi-source data, and extracting a small target recognition result based on the image and the radar; aligning a multi-source identification result with AIS data under a unified space-time reference, and completing multi-source data trajectory association at an edge computing node by adopting a joint probability data interconnection algorithm optimized by a mahalanobis distance; and predicting the target trajectory at the cloud and feeding back the target trajectory to the edge node for optimization association, and integrating a result to output a small target dynamic identification and tracking result. According to the method, through cooperative processing of visual enhancement and radar anti-interference, and in combination with a cloud-side cooperative fusion architecture, the accuracy and robustness of small target identification in a low visual environment are effectively improved, and the problems of missing detection and false detection of a traditional single sensor in a complex scene are solved.

The application discloses an infrared long-distance space adjacent target super-resolution method, wherein the method comprises the following steps: S1, analyzing the imaging characteristics of a long-distance target optical detection system and the imaging characteristics of space adjacent multiple targets, modeling point target imaging, and generating a simulation image dataset; S2, initializing the input simulation image based on linear mapping; S3, realizing infrared space adjacent target super-resolution modeling by adopting a sparse reconstruction algorithm, and constructing a deep unfolding network framework; S4, sequentially passing the initialized image through each stage of the deep unfolding network; S5, constructing a GPU training environment, setting a data loader, a model and an evaluator configuration file, training the model, applying the trained model to a test set, generating a high-resolution image, extracting target coordinate information by post-processing and inputting the target coordinate information into the evaluator, obtaining evaluation indexes based on infrared long-distance space adjacent targets, and calculating an average detection rate.

The invention relates to the technical field of atmospheric environment monitoring and optical detection, in particular to an aerosol vertical profile correction method and device for aerosol scattering coefficient and laser radar combined observation, and the method comprises the steps: S1, collecting echoes according to an integral window, and obtaining distance correction echoes; s2, collecting a height scattering coefficient greater than or equal to 2, and aligning the height scattering coefficient with a distance correction echo grid / time; s3, background deduction, resolution matching and invalid height elimination are carried out to obtain preprocessed echoes; s4, generating an initial scattering coefficient profile; s5, identifying layered boundary division layer intervals; s6, establishing a correction factor model for each layer, adding overlap compensation to the near earth, and introducing a system constant; s7, taking the consistency of the total height of the theoretical echo and the preprocessed echo as a target, taking the consistency of multi-height scattering coefficients as a constraint, and carrying out joint solving to obtain correction factor distribution; and S8, outputting a correction profile, boundary information and a parameter set. According to the method, system constants and overlap compensation are solved by preprocessing echo layering scale gradient correction factors through combination of full-height consistency and two-height actual measurement constraints, and a correction profile is stabilized.

The application provides a transmission type optical cryogenic probe station, which mainly comprises a vacuum cavity and a detection frame, the vacuum cavity is provided with a flange opening for light transmission; the detection frame is mainly designed by embedding a bearing and a sample supporting plate, the sample supporting plate is controlled by a motor to rotate by any number of turns, and a sample groove is designed in the form of a through hole to ensure that light can pass through the sample groove. The application realizes transmission type optical detection, when the detection sample needs to be replaced during the detection process, the detection sample can be replaced by only controlling the sample supporting plate to rotate, without manually changing the probe position, without re-performing the complicated processes of rewarming, back pressure, vacuumizing and cooling, thereby greatly reducing the complexity of the detection process and shortening the detection time.

The present application relates to the field of optical sensing technology, and provides a transparent tomographic imaging method based on an edge convex lens array, which receives an incident light source at a first end face to generate a first light signal, and the first light signal is transmitted along the first end face to a circumferential side face. The first light signal is encoded by a convex lens array structure arranged at the circumferential side face, and at least one group of second light signals is obtained after encoding. The second light signal is sensed by at least one optical detection module. The optical detection module transmits the second light signal to a signal reconstruction module for tomographic reconstruction to obtain a third light signal. The present application also discloses a sensing device. The method and the sensing device can transfer the sampling and encoding process of the light signal from a plane to an edge region of an imaging plane, realize angle-related optical encoding of the in-plane propagating light signal, and obtain an imaging result through tomographic reconstruction. Thus, the technical problems of limited transparency and limited resolution in the existing transparent imaging scheme are overcome.

The invention discloses an absolute value encoder of an optomagnetic dual-detection module collaborative layout structure, and relates to the technical field of position detection, the encoder enables an optical coded disc and a magnetic ring to be coaxially installed on a mechanical base, and an optical detection subsystem and a magnetic detection subsystem are collaboratively arranged around a detected rotating shaft; collecting a magnetic initial position on a calibration platform by taking an optical absolute position as a reference, and storing a magnetic compensation mapping and a signal quality threshold value into a nonvolatile memory; in the operation period, the signal processing unit obtains an optical absolute position and a compensated magnetic position, the sampling state is divided into a normal state, an optical degradation state, a magnetic interference state and a two-way abnormal state according to the position difference value and the optical and magnetic signal quality, and the optical absolute position or the compensated magnetic position is selected to be output accordingly. And a frozen position or a safe position is output in a double-path abnormal state, and a health state field is attached, so that integration of position measurement, self-diagnosis and function safety is realized.

An optical detection and tracking device for a target includes a control board, a frame, a turntable, an optical camera, and a light-transmitting cover. The turntable is driven by an azimuth motor to achieve 360° horizontal rotation, and the optical camera is driven by a pitch motor to achieve pitch scanning. The control board can switch between scanning mode-1 and tracking mode-2. In scanning mode-1, the azimuth and pitch motors rotate continuously or in steps, driving the optical camera's field of view to detect the target. In tracking mode-2, the azimuth and pitch motors are deflected to keep the target within the optical camera's field of view. The device obtains the target's projected distance by constructing an X / Y coordinate system within the field of view angle α, and drives the motors to deflect based on the difference, offsetting the target towards the center of the field of view to achieve tracking. Furthermore, a single scanning frame or multiple nested scanning frames can be constructed within the field of view, and offset signals are triggered by the scanning frame boundaries to achieve progressive and precise tracking. This device can automatically keep the target centered in the field of view, providing a basis for laser ranging and strong light illumination, and is adaptable to different optical structure designs.

The invention discloses a laboratory mouse calcium imaging wireless monitoring method, system and monitoring device.The method comprises the steps that an optical detection structure is arranged beside a laboratory mouse intracranial calcium indicator marking area, and a fluorescence signal is captured; constructing a calcium imaging original data mapping model, and converting the fluorescence signal into initial calcium imaging data; pure calcium imaging data are obtained through adaptive filtering and noise reduction, and lightweight compression is carried out based on time sequence periodic characteristics; packaging transmission data through a low-power-consumption wireless transmission model of a plurality of groups of preset independent channels; after the external receiving terminal decompresses, visual information is generated through a calcium imaging reduction model; the system and the equipment correspond to the method, and are integrated with an optical detection structure, a signal processor, a wireless transmitter and other core components; the device thoroughly gets rid of the constraint of a long optical fiber, is miniaturized, low in power consumption, resistant to interference and good in biological compatibility, guarantees the accuracy of monitoring data and experimental continuity, and is suitable for related research of brain activities of laboratory mice.

The invention relates to the technical field of a decomposition rotational flow ammonia-doped pulverized coal burner combustion state real-time monitoring system based on infrared temperature measurement, and adopts the core technical scheme that the decomposition rotational flow ammonia-doped pulverized coal burner combustion state real-time monitoring system comprises an optical detection module, a signal processing module, a data fusion module and a graded monitoring module, wherein the optical detection module synchronously collects infrared radiation and ultraviolet chemiluminescence signals of combustion flames through an optical lens and a spectroscope, and the signal processing module processes a multiband infrared image and a free radical luminescence image to obtain a two-dimensional temperature field and distribution parameters. The data fusion module extracts feature parameters and generates comprehensive feature vectors, and the hierarchical monitoring module outputs qualitative state labels and quantitative risk scores based on an analysis model. According to the scheme, the problems that in the prior art, due to dependence on a single monitoring parameter, diagnosis of the ammonia-doped combustion state is not comprehensive, and the risk of ammonia escape or flameout cannot be early warned are solved, and the beneficial effects that the monitoring accuracy is improved, multi-parameter intelligent fusion diagnosis is achieved, and the combustion efficiency is optimized through active early warning are achieved.

The invention provides a compact integrated broadband test system, which comprises a TFLN integrated chip module, an optical fiber pumping and modulation module, a terahertz radiation and receiving module and a data acquisition and analysis module, and is characterized in that all the modules are integrated to adapt to 200GHz-3.5 THz terahertz radio communication and radar test requirements; the TFLN integrated chip module comprises a TFLN integrated chip, and a thin film lithium niobate TFLN with the x cutting thickness of 500-700 nm is bonded to a SiO2 / 500 [mu] m high-resistance silicon substrate with the thickness of 4700 nm; the optical fiber pumping and modulation module comprises a mode-locked laser, a dispersion compensation unit, a Mach-Zehnder modulator (MZM) and an erbium-doped optical fiber amplifier (EDFA); the terahertz radiation and receiving module comprises a transmitting link, a receiving link and an optical detection branch; the data acquisition and analysis module comprises a balanced photoelectric detector PD, a data acquisition card and analysis software, the terahertz radio communication and radar test requirements can be subjected to data linkage analysis, the test process is simple, and time is saved.

The application relates to a target detection method and system based on improved image matching, and belongs to the technical field of optical detection, which solves the problem of low image matching accuracy and difficulty in realizing accurate target detection in the prior art. The detection method comprises the following steps: image matching is performed on N camera images, a virtual-real fusion method is used to fuse the N camera images with a pre-constructed target imaging background digital model; a digital model containing a target is used to update each non-edge feature point, and the two-dimensional coordinates of each feature point in the corresponding camera image, the three-dimensional coordinates of each camera position, the shooting parameters of the camera and the two-dimensional coordinates of all the pixel points of each image corresponding to each non-edge feature point after the update are obtained; the three-dimensional coordinates of all the non-edge feature points are fused with a target preliminary model to obtain a target three-dimensional topography, so that the target is detected. The accurate detection of the three-dimensional topography of the target to be detected is realized.

The present application provides a kind of optical signal detection and processing method and device, and the physiological signal of optical detection is obtained by detecting blood volume change in human tissue blood vessel through photoelectric sensor in the working process of optical equipment, it is characterized in that, the method includes the following steps in the computing module of the optical equipment: set a data buffer zone, the data buffer zone can store the physiological signal of optical detection of at least 3 predetermined time units;Acquisition and calculation step, the each DC component of the physiological signal of optical detection collected is stored in the data buffer zone, the variance of the value of the DC component is calculated, and the first waveform reference index value is obtained;Comparison step;The first waveform reference index value is compared with the pre-stored reference index value range;Determination step, if the first waveform reference index value is greater than the maximum value of the reference index value, then the signal of the output device is off;If the first waveform reference index value is not greater than the maximum value of the reference index value, continue to collect new physiological signal of optical detection, then the acquisition and calculation step is executed.

Embodiments of the present application provide a medical image parameter reconstruction method, system, device and medium, relating to the technical field of medical detection, the method comprising: acquiring a suspicious lesion position and structural information of the suspicious lesion of a human body tissue to be measured by an ultrasonic probe in a composite probe; guiding a light source end and an optical detection end of an optical probe in the composite probe to collect optical signals according to the structural information; constructing an optical scattering model according to the structural information and the optical signals; constructing a forward analytical model by using the optical scattering model to obtain an analytical expression of an absorption coefficient and a scattering coefficient of the human body tissue to be measured; performing inverse solution on the analytical expression by using a regression algorithm to obtain a solution parameter of the analytical expression; solving a target parameter according to a solution relationship; and solving the absorption coefficient and the scattering coefficient of the human body tissue to be measured by using the target parameter. The present application can improve the detection accuracy of metabolic function information of a lesion in the human body tissue to be measured.

The application discloses a kind of in-orbit spacecraft threat degree evaluation methods based on optical detection image information, belong to aerospace technology field, by establishing the mapping relationship of pixel number and space period characteristics, the equivalent strip number of the imaging area of observed spacecraft in critical dimension direction is determined, and the equivalent strip number is used as the optical detection image information quantity of observed spacecraft;Based on the multiple target detection task level of preset, optical detection image information quantity is used as input, based on Johnson criterion, the expected success probability of observation spacecraft in different target detection task level is determined to realize detection task, and the expected success probability is used as the threat degree of observed spacecraft in corresponding target detection task level by observation spacecraft;The threat degree under each target detection task level is compared with the preset threat assessment probability threshold value, and the highest task level not less than the threshold value is mapped as the final threat level.The method can accurately quantify threat degree index.

An apparatus for in vivo profiling a region of biological tissue to determine its state of mutation is provided. The apparatus includes a light source configured to generate at least one light beam, an optical arrangement configured to form the light beam into an optical probe beam for illuminating the region of biological tissue and receiving a Raman backscattered optical signal from the region of biological tissue, wherein the optical arrangement is further configured to filter the Raman backscattered optical signal to generate a filtered optical signal. The apparatus further comprises an optical detector configured to receive the filtered optical signal to generate a corresponding detector signal including one or more components indicative of one or more molecular species present in the region of biological tissue; and a data processing arrangement configured to process the detector signal to determine from the one or more components a concentration of the one or more molecular species to compute the state of mutation of the biological tissue.

What is needed is an improved signal transmission system that can preserve the bandwidth, accuracy, and fidelity of all of the high speed differential signals under severe common mode and environmental conditions.SOLUTION: Optical probing systems transmit high fidelity analog signals from a device under test (DUT) to a measurement instrument. The system receives a differential input signal and splits the differential input signal into a high frequency (HF) component and a low frequency (LF) component. Each component is independently modulated using a different analog modulation technique and transmitted over a separate optical fiber. The architecture maintains galvanic isolation between the input and output devices and allows for independent transmission of signal portions optimized for bandwidth and accuracy. The signals are demodulated, delay-matched, and recombined in the analog domain to produce a reconstructed full-bandwidth output.SELECTED DRAWING: Figure 3

The embodiment of the present application provides a kind of optical reconnaissance system based on, comprising: shell, optical detection component and driving mechanism.Optical detection component is arranged in the shell, the optical detection component includes multiple camera devices, each camera device is sequentially spaced along the circumference of the shell, and the camera device is connected to the shell, the camera device includes carrier piece and camera head, the carrier piece includes upper side plate and lower side plate, the upper side plate and the lower side plate are movably connected, the upper side plate and the lower side plate are movably connected with the shell, and a plurality of camera heads are respectively arranged on the upper side plate and the lower side plate, and optical detection component is used to detect the optical position coordinates of target object.Driving mechanism is arranged in the shell, the driving mechanism is drivingly connected with the upper side plate and the lower side plate of each camera device, to drive the relative movement of the upper side plate and the lower side plate, adjust the total vertical field angle of camera head on the upper side plate and the lower side plate.

The embodiment of the invention provides a weapon system. The weapon system comprises a bearing device, a reconnaissance system, a portable weapon station and an integrated control terminal. The reconnaissance system comprises a shell, an optical detection assembly, an acoustic detection assembly and a control assembly, the shell is arranged on the bearing device, the optical detection assembly is arranged on the shell and comprises a plurality of camera devices, the camera devices are sequentially arranged in the circumferential direction of the shell, and the optical detection assembly is used for detecting optical position coordinates of a target object. The optical detection assembly is arranged in the shell, the acoustic detection assembly is arranged in the shell and used for detecting acoustic position coordinates of a target, and the control assembly is arranged in the shell, electrically connected with the optical detection assembly and the acoustic detection assembly and used for determining final coordinates of the target according to the optical position coordinates and the acoustic position coordinates. The portable weapon station is in communication connection with the reconnaissance The integrated control terminal is in communication connection with the reconnaissance system and the portable weapon station.

The application discloses a kind of planet laser spectroscopy acquisition device and method combined with remote ultraviolet Raman-fluorescence technology, and it is related to deep space exploration spectral measurement technical field.The device includes ultraviolet laser emission unit, beam expander unit, dichroic beam splitter, cassegrain telescope unit, signal separation and acquisition unit, Raman spectrometer, fluorescence spectrometer and computer control unit.Laser is projected to remote target by cassegrain telescope after beam expansion and dichroic beam splitter, and the Raman and fluorescence signals excited are received by the same telescope, then after filtering out Rayleigh scattering light, they are collected by optical fiber into corresponding spectrometer.The application can realize the integrated collection of ultraviolet Raman and fluorescence spectrum of remote, non-contact planetary surface material, and provide efficient optical detection means for mineral composition identification, organic matter and potential life marker detection.

The invention provides an intelligent monitoring system and a control method thereof. In the system, a laser radar detection assembly (1) is used for detecting actual position coordinates of a target in a conventional environment and a single visual mode in a complex environment of low illumination, rain and fog; the optical detection assembly (2) enables a visible light image and an infrared image of a detected intruding target to coincide, so that optical information feature data of visible light and infrared light can be accurately fused; the control assembly (3) is used for accurately determining the category attribute and coordinate information of a target object according to the actual position coordinates of the target in different environments and the accurately fused optical information feature data, displaying the identification information of the intruding target on the display screen (6), and controlling the on-off state of the emission trigger device (7) according to the identification information. The alarm is controlled to execute, and the locking or transmitting state of the transmitting device (8) is controlled. The method is high in recognition precision and wide in application range, and has active early warning capability and high response efficiency.

The invention designs a quick and intelligent true and false target detection and identification method based on spectral imaging calculation, and aims to solve the problems that the inflatable true and false target is high in camouflage, the traditional optical detection means is difficult to effectively identify, and the business work is inconvenient to carry out. According to the method, the target information dimension is expanded to'space dimension + spectrum dimension ', so that the distinguishability of the target, the background and interference is enhanced, and the anti-interference and recognition capability is improved. According to the method, firstly, target map information is rapidly obtained by designing an imaging system based on a micro-lens array, then spectrum reconstruction based on depth expansion Transform is carried out on an image, single-frame measurement image data is restored to a multi-spectrum cube, a spectrum image super-resolution network training technology based on similarity measurement and coring self-attention is constructed, and a multi-spectrum image super-resolution network training algorithm is established. The method comprises the following steps: firstly, acquiring a spectral image, improving the resolution of the spectral image, then performing feature extraction on spectral samples by using a convolutional neural network encoder and a self-attention mechanism, constructing a multi-head self-attention mechanism to capture a complex relationship among the samples, and finally achieving the purpose of accurately detecting true and false inflation targets.

The application belongs to the field of target optical detection, and discloses a target optical detection simulation method and system containing a star background, which simulates a scene containing a star background and a target by constructing an optical scene to be detected, establishes a detection model, converts star luminosity and target luminosity optical physical quantities into gray value DN in the field of digital images, and presents data collected by a detector in the form of an image, accurately identifies and removes star information from a complex image containing stars and targets, accurately obtains the position of the target and the miss distance, determines the deviation of the target relative to an ideal observation position, adjusts the observation angle in real time, continuously tracks the target, ensures that the target is always in the center or within the field of view, and obtains comprehensive and accurate detection information, solving the problem that existing target detection process simulation has relatively independent elements, does not have the capability of simultaneously constructing a target and a background and full-link modeling simulation, and lacks physical simulation modeling capability.

The application discloses a kind of based on dual polarization modulation's anti strong light polarization detection analysis device and method, it is related to optical detection field, device includes: dual polarization modulation imaging system and analysis system;Dual polarization modulation imaging system is arranged on the light path of measured target, dual polarization modulation imaging system is connected with analysis system;Dual polarization modulation imaging system is used to obtain from different detection angle under the receiving measured target's modulated light, and the modulated light of measured target under different detection angle is rotated polarization filtering twice, and obtains the data to be analyzed under different detection angle;Analysis system is used to analyze and screen the data to be analyzed under different detection angle, and obtains target image;The application is realized to the effective suppression of strong light by dual polarization modulation imaging system, by analysis system, the analysis and screening of the image after dual polarization filtering under different detection angle, obtain high-quality target image, improve the accuracy and reliability of detection result.

The invention discloses a bionic compound eye optical detection system with a dynamic variable array plane, and belongs to the technical field of advanced optical detection and bionic intelligent sensing. The system comprises a dynamic variable array plane subsystem, an intelligent control and processing unit and a communication peripheral unit. The core is that the dynamic variable array plane subsystem is integrated with a substrate capable of being electrically controlled to deform and a sub-eye unit array distributed on the substrate, and each sub-eye comprises a variable focal length lens, a switchable light splitting module and a multi-band image sensor. The intelligent control and processing unit operates optimization algorithms such as view field-resolution tradeoff, field depth expansion and intelligent wave band fusion, and integrated intelligent cooperative control over the macroscopic array surface form, the microscopic sub-eye optical parameters and the image processing flow is achieved. The defects that a traditional mechanical adjustment compound eye system is slow in response and poor in flexibility are overcome, autonomous dynamic reconstruction can be achieved according to detection scenes and task requirements, and the method is particularly suitable for wide-area searching and accurate positioning of high-speed small targets.

Apparatus, sensor chips and techniques for optical sensing of substances by using optical sensors on sensor chips.