304 results about "Optical intensity" patented technology

The invention provides an intrinsic solid-state ion diffusion coefficient test method and device based on optical imaging, and relates to the technical field of solid-state ion test.The method comprises the steps that a test sample is pretreated; carrying out a photoelectric test on the test sample; placing the electrochemical cell in an optical imaging system, connecting the electrochemical cell with an electrical testing system, applying a constant voltage deviating from a steady state to the monodisperse electrode plate, collecting the real-time change condition of the material under the modulation of the constant voltage in real time through an industrial camera, and outputting relational data of optical intensity and time; analyzing the diffusion path through in-situ characterization equipment, and obtaining an ion diffusion path corresponding to the to-be-detected ion battery electrode material particles in combination with dynamic information provided by an optical imaging system; and determining the characteristic time according to the relational data of the optical intensity and the time, and determining the intrinsic solid ion diffusion coefficient corresponding to the test sample by combining the characteristic time and the ion diffusion path corresponding to the to-be-tested ion battery electrode material particles.

The invention relates to the technical field of large-scale structure measurement, and discloses a robot laser vision three-dimensional scanning measurement system for a large-scale structural member. The system comprises a robot motion platform, a laser vision sensing module, an ambient light sensing module, a point cloud processing module and a motion control module, wherein the laser vision sensing module is arranged at the tail end of the robot motion platform. The ambient light sensing module collects ambient light intensity distribution data in real time, and the motion control module combines the data with three-dimensional model data of the large-scale structural member to be measured to generate a multi-view dynamic scanning path instruction. The robot motion platform executes an instruction to drive the laser vision sensing module to move, the module projects laser stripes to the surface of a to-be-measured structural member and synchronously collects an image, the point cloud processing module performs adaptive filtering processing on the image and then generates three-dimensional point cloud data, and the requirement for efficient and accurate measurement of a large structural member in a complex industrial environment can be met.

The invention provides an intrinsic solid-state ion mobility testing method and device based on optical imaging, and relates to the technical field of performance testing of solid-state ion electrolyte materials.The method comprises the steps that a test sample pool is assembled; performing a power-on test on the test sample pool; extracting size information of solid electrolyte powder particles to be detected from the optical image; extracting a time-varying curve of the optical intensity of the solid electrolyte powder particles to be detected from the optical image, and determining time information of the optical response of the particles from beginning to balance in the voltage variation process based on the curve; determining the electric field intensity under the test condition according to the magnitude of the applied voltage and the total thickness of the thin-layer insulating substrate; and determining the intrinsic ion mobility of the solid electrolyte powder particles to be detected according to the size information, the time information and the electric field intensity.

The invention relates to the technical field of aeroengine turbine blade thermodynamic performance testing, in particular to a two-dimensional multi-mode turbine blade heat-flow double-field synchronous testing method and system.The method comprises the steps that phosphorescent particles are evenly scattered in an experimental flow field of a target turbine blade, and after the phosphorescent particles are excited through double lasers, the target turbine blade is subjected to heat-flow double-field synchronous testing; collecting a flow field image; inverting a temperature field by using a phosphorescence intensity ratio method based on the flow field image, and calculating a velocity field through an improved PIV algorithm; and after time-space registration is carried out on the temperature field data and the velocity field data, fusion is carried out to generate a composite heat-flow field, dynamic coupling characteristics are analyzed through a vortex center tracking algorithm, and the heat-flow double-field synchronous test of the target turbine blade is completed. Through ultraviolet / PIV dual-laser excitation, multispectral separation acquisition and high-precision data fusion, time-space synchronous measurement of the temperature field and the velocity field of the boundary layer of the turbine blade is realized.

The invention belongs to the field of greenhouse film aging test methods, and relates to an aging test device considering greenhouse film stress and a test method thereof.The aging test device comprises an upper environment box, a lower environment box, a test observation box and a control panel which are arranged on a main frame, a support plate and an observation platform are arranged in the test observation box, and a greenhouse film fixing frame is arranged above the support plate and the observation platform; an arc-shaped arch frame is arranged in the greenhouse film fixing frame, a flexible film pressing rope is arranged at the top of the greenhouse film fixing frame, and the two ends of the greenhouse film fixing frame are connected with a rotary tensioning device at an end plate of the greenhouse film fixing frame and a force sensor at an end plate of the other opposite end of the greenhouse film fixing frame respectively. Tension needed in the test process can be accurately adjusted and applied before the test is started through the rotary tensioning device and the force sensor, if an electric tensioning actuator is used, greenhouse film stress can be compensated and calibrated in real time in the test process, and other environmental parameters such as temperature, humidity and ultraviolet light intensity can be further adjusted. And a multi-environmental factor interaction test of the greenhouse film in a natural curved surface and stress state is realized.

The invention provides a broadband linear frequency modulation microwave source based on ultra-short external cavity modulation light feedback, and relates to the field of microwave photonics. Continuous light generated by the main semiconductor laser is injected into the slave laser after being adjusted, so that the slave laser works in a periodic oscillation state; the slave laser, the electro-absorption modulator and the reflector are integrated to form an ultra-short outer cavity, and the intensity of feedback light is regulated and controlled by an external signal source so as to realize linear scanning of cavity mode frequency. After beam splitting of light output from the laser, one path forms a long external cavity feedback stable signal through the adjustable optical fiber delay line, and the other path outputs a target signal after beat frequency of the photoelectric detector and filtering of the band-pass filter. A high-speed modulator and a high-frequency microwave source are not needed, the broadband advantage of a photonics scheme is reserved, the frequency sweeping bandwidth is further improved to 60 GHz or above, the center frequency and the frequency sweeping range are independently adjustable, the structure is simple, cost is low, integration is easy, and the device is suitable for scenes such as photoelectric radars.

An exemplary method of monitoring a bath process includes processing a first wafer by submerging the first wafer within a bath solution; capturing a video of the bath solution containing the first wafer during a first time interval; analyzing the video based on intensity of light captured in a frame of the video; and based on analyzing the video, determining a first metric of the bath solution during the first time interval.

The invention relates to a laser processing system (1) having at least one laser source (3, 4) for generating a plurality of mutually independent laser intensity distributions (5, 6). The laser processing system (1) comprises a control device (7) for controlling the laser power levels (P1, P2, 13, 14) and / or the beam quality levels (K1, K2, 14, 16) of the laser intensity distributions (5, 6) independently of one another. The laser processing system (1) is designed to vary the laser power levels (P1, P2, 13, 15) and / or the beam quality levels (K1, K2, 14, 16) of the laser intensity distributions (5, 6) differently from one another within each laser pulse by means of the control device (7). The invention also relates to a corresponding method for processing material (2) by means of corresponding laser radiation (5, 6).

The application belongs to the field of scintillator material preparation, and particularly relates to a manganese-based pixelated scintillator array and a preparation method and application thereof. The (BuTPP)2MnBr4 scintillator material in a molten state is filled into a quartz glass cavity by capillary action, and a glass scintillator matrix is formed by cooling and quenching; then, in-situ crystallization is realized in the glass scintillator by using femtosecond laser direct writing processing, and a pixelated array is precisely constructed. The in-situ crystallization induced by the femtosecond laser significantly improves the photoluminescence intensity and the radiation luminescence intensity of the material, effectively solves the problems of low luminescence efficiency, high pixelation processing difficulty and poor crystallization controllability of the traditional glass scintillator, and the prepared pixelated scintillator array has stable optical performance and clear pixel boundary, is suitable for X-ray imaging, radiation detection and the like, and has simple preparation process and strong controllability of parameters, thereby providing a new implementation method for the preparation of arrayed X-ray scintillators.

The application relates to the technical field of intelligent analysis of power transmission lines, and particularly discloses a multi-objective cooperative video online monitoring and intelligent analysis system for power transmission lines. The system comprises: a buffer construction module for constructing an independent image buffer; a phase alignment module for extracting an optical intensity evolution waveform to obtain a time delay amount, and resampling a video to generate a feature point sequence; a flashover positioning module for extracting a synchronous highlight two-dimensional coordinate and solving a physical space coordinate; a coverage analysis module for constructing an expansion bounding volume, performing spatial analysis on the expansion bounding volume and a cylindrical envelope obtained by geometric dimension reduction of a power transmission line model, and obtaining an erosion coverage area; and a directional cooperation module for driving a pan-tilt camera to perform high-resolution rephotographing based on the solved physical coordinate and the erosion area. The system is beneficial to reducing multi-camera asynchronous and parallax problems, and realizing three-dimensional positioning of arc transient discharge of the power transmission line and quantification of a damaged range of equipment.

The application provides a phase-sensitive optical time domain reflectometer, a measurement method and a readable storage medium, wherein a signal generation circuit of the phase-sensitive optical time domain reflectometer is configured to generate a radio frequency signal to drive an optical intensity modulator to modulate probe light, so that two groups of frequency division multiplexing sequences with differences can be used to synchronously detect a sensing optical fiber to be measured, a differential unfolding algorithm is combined to accurately solve a phase change amount in adjacent sampling intervals, and then demodulation results corresponding to different frequency parts are respectively unfolded to obtain unfolded phase results, so that the problem of large strain phase folding is solved and a large strain range is recovered, and further, the unfolded phase results are rearranged and combined in time sequence through time sequence interleaving processing of the unfolded phase results, so that a high sampling rate and a distortion-free reconstruction result are reconstructed, and therefore, the application can realize accurate measurement of high frequency response and large strain range dynamic strain.

The application relates to an optical fiber gas sensing device, a method and a cable joint partial discharge judgment system, wherein the optical fiber gas sensing device comprises: an oscillation module for performing oscillation frequency selection processing on optical signals of different wavelengths to obtain target bandwidth optical signals; an optical intensity detection module connected with the oscillation module, used for obtaining the light wave intensity change amount of the target bandwidth optical signals after the target bandwidth optical signals in a sensing gas chamber contact with the collected target gas from a cable joint; and a judgment module connected with the detection module, used for judging that the cable joint is in a partial discharge fault state when the light wave intensity change amount is equal to or greater than a preset partial discharge fault change amount. Thus, the optical fiber gas sensing device realizes rapid detection of the partial discharge fault of the cable joint, effectively improves the operation reliability of the cable joint, ensures the normal state of the power equipment, and further guarantees the power supply reliability of the power system.

The utility model provides a kind of optical intensity adjustable optical filter switching device, belong to filter production technical field, including support assembly, including base, the support table of rotation connection in base end part, the support rod of fixed connection in support table end part and the connecting column of fixed connection in support table center;Switching assembly, including fixed mounting in the connecting piece of connecting column end part, hinged in the connecting piece end part link, the extension rod of insertion in link end part, the clamping block of fixed connection in the extension rod end part and the filter frame body of clamping in the clamping block end part.The utility model has the beneficial effects of: realize the flexible control of filter in three-dimensional space, can be adapted to the optical path demand of different light source, different detection equipment, expand applicable scene, shorten filter switching time, can be quickly completed filter loading and unloading, without other auxiliary tools, improve the efficiency of multiple filter alternate test.Auxiliary lamp panel provides standard light source, without external device can be completed filter light transmission performance test.

The invention discloses a device and a method for testing frequency domain characteristics of a high-speed optoelectronic device. The device comprises a laser, a sawtooth wave generator, a signal source, an acousto-optic modulator, an electro-optic intensity modulator, a low-frequency photoelectric detector, a frequency spectrograph and a computer. An electro-optic intensity modulator is driven through a sawtooth wave modulation technology, and frequency-shifted and non-frequency-shifted optical carriers and frequency-shifted and non-frequency-shifted radio frequency optical sidebands are synchronously generated in an optical path in combination with radio frequency signal modulation. And after the signal is subjected to beat frequency processing by the photoelectric detector, the power of the frequency shift signal in different working states is measured by the frequency spectrograph, so that the frequency domain characteristic parameters of the photoelectric device to be measured are obtained. The method is based on sawtooth wave modulation and an amplitude comparison method, frequency domain response characteristics of a single / dual-drive electro-optic intensity modulator, dual-parallel electro-optic intensity modulation and a photoelectric detector can be accurately represented, the test method is simple, and dependence on a high-frequency test instrument is effectively reduced.

Some embodiments of the present disclosure provide an image sensor, including a substrate, a plurality of first photodiodes, a first color filter unit and a first light intensity distributor. The first photodiodes are in the substrate. The first color filter unit is over the substrate. The first color filter unit includes a top-left region, a top region, a top-right region, a left region, a center region, a right region, a bottom-left region, a bottom region, and a bottom-right region over the first photodiodes, respectively. The first light intensity distributor is over the first color filter unit, in which the first light intensity distributor includes a plurality of first nanopillars configured to converge light to the center region or disperse light from the center region, and the center region has a highest or a lowest optical intensity.

The utility model belongs to the technical field of optical instruments, and particularly relates to an optical tweezer optical path module and a cell optimization system. The optical tweezer optical path module comprises a supporting base, a laser head mounting seat and a multi-stage attenuation module. The laser head mounting seat is arranged on the supporting base and is used for mounting a laser emitting head for emitting laser; and the multi-stage attenuation module is arranged on the supporting base and comprises a plurality of reflection attenuation mirror groups which are arranged on the light path at intervals, and each reflection attenuation mirror group is used for attenuating the laser intensity and changing the laser direction. The optical tweezer optical path module provided by the utility model has a multi-attenuation mechanism, and a relatively large attenuation multiple range is easier to realize, so that laser power adjustment in a relatively large range is realized, the laser power dynamic adjustment capability is favorably improved, the laser intensity is finely controlled, and cells are not damaged when various cells are fixed through an optical trap formed by laser.

To provide an onium salt used for a chemically amplified resist composition excellent in solvent solubility, having high sensitivity and high contrast and excellent in lithography performance such as LWR, CDU, MEF, EL and DOF in photolithography using high energy rays, a chemically amplified resist composition containing the onium salt as a photoacid generator, and a pattern forming method using the chemically amplified resist composition.SOLUTION: An onium salt having the formula (1): SELECTED DRAWING: None

The application discloses a spiropyran derivative with color and fluorescence dual switch, a photochromic material and a preparation method and application thereof, the spiropyran derivative is a compound with a chemical structure general formula (1); and further discloses a photochromic material prepared by mixing the spiropyran derivative with an epoxy resin and a preparation method thereof. The aromatic fluorescent group is introduced into the side group of the spiropyran material, the conjugated system of the fluorescent group itself is large, and thus the fluorescence emission intensity after the spiropyran is opened is increased. The compound shows good photochromic and photoluminescent effects in organic solvents and solid media; the fluorescent group and the spiropyran material are combined, and a molecular switch material with significant color and fluorescence changes can be prepared; the spiropyran derivative can be used for preparing a two-dimensional optical display device and an intelligent material molecular switch.

This thermal image processing device (100) comprises: a subject detection unit (103) that detects an area of a subject from a thermal image in which each of a plurality of pixels expresses a pixel value corresponding to a received intensity of infrared rays; an area measurement unit (104) that identifies the size of the area of the subject in the thermal image; a prior data storage unit (105) that stores data indicating a relationship in which the smaller the area on an imaging surface where infrared rays are received from an object of detection, the lower the pixel value corresponding to the received intensity of the infrared rays from the object of detection; a correction value calculation unit (106) that references the data to identify correction information for compensating for the amount of decrease, which is the amount by which the pixel value corresponding to the received intensity decreases in relation to the size of the area of the subject; and a thermal image correction unit (107) that uses the correction information to correct a pixel value in the area of the subject so as to compensate for the amount of decrease in the pixel value due to the size of the area of the subject.

The utility model discloses a cutting and developing device for steel pipe processing, include: the base plate, the outer wall fixedly connected with the guiding device and the flattening device of base plate top, the inner wall sliding connection has cutting device of guiding device, the utility model relates to steel pipe cutting and developing technical field, this guiding device and flattening device, through fixed plate, threaded rod and the resistance board form "screw thread adjustment and clamping fixed " structure, and the operator can accurately control the resistance board spacing through rotating threaded rod, firmly fixed in the mounting hole with flame cutting nozzle, ensure that the flame nozzle always aligns the bus direction of steel pipe, simultaneously, the MSE-V-ONE laser doppler velocimetry sensor real -time monitoring steel pipe moving speed and position, not only can judge whether the steel pipe reaches the cutting area through the reflected laser intensity, but also can feed back the speed signal to the PLC controller, and dynamically match the gas supply amount of flame cutting nozzle and the conveying speed of steel pipe.

This specification relates to an optical particle counter, a method for using an optical particle counter, and a method for reducing particle counting errors during use of an optical particle counter. The method includes placing an optical isolator between a laser and a flow cell to allow laser light to pass through the flow cell and to reduce the intensity of light returned to the laser as optical feedback that could cause mode hopping.

A semiconductor optical device includes n-doped, p-doped, and active layers, an optical waveguide structure, and drive current structure(s). The waveguide structure defines optical mode(s); the drive current structure defines a drive current path. One or both of those structures are arranged to result in a selected (or maximized) degree of overlap between lateral profiles of current density and optical intensity. The optical device can be arranged as a diode laser or optical amplifier.

An optical computing device and system, the optical computing device comprising an input module, a feedback module, a reservoir module and a detection module. The input module is configured to compute a first set of optical signals based on a first weight to obtain a second set of optical signals, the first set of optical signals carrying first data to be computed. The feedback module is configured to load the first computation result on feedback light to obtain a first set of feedback optical signals, the first computation result being a computation result of second data by the optical computing device, the second data being data processed before the first data. The reservoir module is configured to compute the first set of feedback optical signals and the second set of optical signals based on a second weight to obtain a third set of optical signals. The detection module is configured to detect optical intensity of the third set of optical signals to obtain a second computation result.

The application discloses a microwave photon filter and a control method thereof, and belongs to the field of optical fiber communication. The filter comprises an optical ring cavity, a tunable laser source, an electro-optic intensity modulator, a photoelectric detector and an electric vector network analyzer. The first input end of the electro-optic intensity modulator is connected with the output end of the tunable laser source, the second input port of the electro-optic intensity modulator is connected with the output end of the electric vector network analyzer, and the output end of the electro-optic intensity modulator is connected with the input end of an optical circulator in the optical ring cavity. The output end of the optical circulator in the optical ring cavity is connected with the input end of the photoelectric detector, and the output end of the photoelectric detector is connected with the input end of the electric vector network analyzer. The application can overcome the problem that the device parameters cannot be adjusted after the structure of the microwave photon filter is determined.

The invention discloses automatic detection equipment, an object detection method and a controller, and relates to the technical field of intelligent robots. A specific embodiment of the invention comprises the following steps: arranging light source equipment around each piece of shooting equipment, acquiring object images shot by one or more pieces of shooting equipment by utilizing a controller in automatic detection equipment, and determining brightness information of the object images, when it is determined that a light supplement condition is satisfied according to the brightness information of the object image, controlling the light source device to be turned on to execute a light supplement operation, and obtaining a target image re-shot by the shooting device after light supplement; and detecting the state of the to-be-detected object based on the target image. According to the embodiment of the invention, the light supplementing intensity is dynamically adjusted based on the brightness information of the image, so that the image quality is improved, and the image recognition rate and the detection effect of the to-be-detected object are improved.

The purpose of the present disclosure is to achieve an optical monitor device capable of measuring the light intensity of an optical signal incident on a multicore optical fiber irrespective of the polarization state of the optical signal.　The optical monitor device according to the present disclosure detects the intensify of light propagating through a plurality of optical fibers, and comprises a plurality of branch parts and a plurality of optical sensors. The plurality of optical sensors have, two-dimensionally arrayed, a greater number of pixels than the number of the plurality of optical fibers, detect the light intensity of each pixel corresponding to an incidence position in an incidence region, calculate, for each pixel corresponding to an incidence position in the incidence region, the total of the light intensities detected by the plurality of optical sensors, and use the calculated total of the light intensities of the pixels to calculate the intensity of light propagating through at least any one optical fiber from among the plurality of optical fibers.

An imaging system comprising an event-based vision sensor, EVS, configured to obtain event-based data of a dynamic scene, wherein the EVS detects as an event the occurrence of a change in intensities of light; and a processing unit configured to process the event-based data, wherein, depending on the processed event-based data, the imaging system is configured to evaluate how a shadow changes in the dynamic scene to determine whether an object casting the shadow collides with a surface and / or another object in the dynamic scene.

This invention relates to the field of optical inspection technology, specifically to a micro LED wafer-level rapid defect localization system based on photoluminescence. A broadband pulse excitation module outputs pulsed laser light matching the characteristics of the material under test; a two-dimensional scanning platform carries the wafer and achieves nanometer-level precise positioning; a time-resolved acquisition module collects fluorescence signals and converts them into time-resolved photoluminescence data; a data processing and control module synchronously controls the operation of each module, receives and processes the time-resolved photoluminescence data, extracts the transient luminescence intensity and carrier lifetime of each detection point, compares the two-dimensional feature vector formed by these two parameters with a preset defect feature database, identifies the defect type of each micro LED chip, and generates a wafer-level defect fingerprint spectrum. This system can accurately distinguish different types of failure modes such as epitaxial defects, surface state defects, and poor electrode contact, significantly improving detection efficiency and defect classification accuracy.

The invention provides an unbalance-load-resistant optical force sensor. The unbalance-load-resistant optical force sensor comprises a shell, a nested elastic assembly and an optical detection module, the nested elastic assembly is arranged in the shell, the nested elastic assembly comprises an outer-layer elastic body, a contact transmission piece and an inner-layer elastic body, the outer-layer elastic body is tightly connected with the shell, the outer-layer elastic body is connected with the inner-layer elastic body through the contact transmission piece, and the inner-layer elastic body is connected with the outer-layer elastic body through the contact transmission piece. The inner-layer elastic body is used for transmitting axial displacement to the inner-layer elastic body to enable the inner-layer elastic body to deform; and the optical detection module is arranged at the bottom of the nested elastic assembly and is used for converting the deformation quantity of the inner-layer elastic body into optical intensity and outputting an electric signal based on the optical intensity. According to the invention, the torque can be filtered, and the stability and precision during measurement are improved.

This phase-quadrature interferometer (1) with polarization-maintaining optical fibers, each comprising a first axis and a second axis with different refractive indices, the interferometer (1) comprising a starting optical fiber (9) optically connecting, via its first axis, a linearly polarized laser source (3) and a first coupler (5), a reference optical fiber (11) optically connecting, via its first axis, the first coupler (5) and a second coupler (7), a measurement optical fiber (15) optically connected to the second coupler (7), a fourth optical fiber (43) and a fifth optical fiber (45) exiting the second coupler (7) to a phase-shifting module (47), and four optical sensors (49) configured to perform a phase-quadrature measurement of the light intensity received by the optical sensors (49). Figure for the abstract: Fig. 1