36results about "High-speed photography" patented technology

The present invention provides a method for leakage testing of an electrostatic chuck. The method for leakage testing of an electrostatic chuck comprises: a mounting step of mounting the electrostatic chuck on a test stage of a testing chamber; a loading step of loading a dummy substrate in an upper surface of the electrostatic chuck; a decompression step of decompressing an interior of the testing chamber; a tracking fluid supply step of supplying a tracking fluid with visibility to a flow path of the electrostatic chuck; a photographing step of photographing the electrostatic chuck; and a determination step of determining whether a leakage occurs in the flow path by examining an image photographed in the photographing step.

The invention provides an electrostatic discharge ultra-high-speed image recording device. Relates to the image acquisition field. Comprising a spectroscope used for dividing a light beam generated by electrostatic discharge into a first discharge split light beam and a second discharge split light beam; the synchronous triggering unit is used for generating a first starting signal, a second starting signal and a third starting signal; the first starting signal, the second starting signal and the third starting signal simultaneously reach the high-speed camera, the first rotary reflecting mirror and the linear array camera; the high-speed camera is used for collecting the first discharge split beam to obtain a first played image under the condition that the first starting signal is received; the first rotary reflecting mirror is used for reflecting the second discharge split light beam; under the condition that a second starting signal is received, the rotating device rotates at a set speed; and the line-scan digital camera is used for collecting the reflected second discharge split beam under the condition that the third starting signal is received to obtain a second played image.

A single-pixel imaging method for an object retracing a motion trajectory, a system, a medium, and a device. The method comprises: a controller generating, according to a predefined formed-image reconstruction algorithm, a modulation pattern sequence having different spatial distributions, and inputting the modulation pattern sequence into a light modulation apparatus (S1); the light modulation apparatus receiving a trajectory pulse signal from a digital signal processor, and simultaneously sending a modulated pulse signal to a synchronous multi-channel signal acquisition apparatus (S2); the synchronous multi-channel signal acquisition apparatus receiving the modulated pulse signal, and being triggered to acquire, at a predetermined sampling frequency, a plurality of sample values of a sampled light signal illuminating an object to be imaged and detected by a first detector (S3); the controller selecting a target sample value from among the sample values as a formed-image reconstruction sample value, the formed-image reconstruction sample value corresponding to a target modulation pattern in the modulation pattern sequence (S4); repeating the above steps until each formed-image reconstruction sample value corresponds to each modulation pattern in the modulation pattern sequence on a one-to-one basis, and generating a formed-image reconstruction sample value sequence on the basis of each formed-image reconstruction sample value (S5); on the basis of the formed-image reconstruction algorithm, the controller performing image reconstruction on the formed-image reconstruction sample value sequence to generate a single formed image of the object to be imaged (S6); and repeating the above steps until a count of generated single formed images reaches a predetermined number (S7). The imaging system is capable of imaging, over an extended period of time, high-speed objects retracing a motion trajectory at varying velocity.

The invention discloses an optical system for high-speed reduction of a dynamic deformation process of a cornea, which realizes high-precision analysis of physical characteristics of the cornea through a high-speed imaging technology, performs error compensation on the physical characteristics and realizes high-precision calculation of intraocular pressure. According to the technical scheme, the optical system comprises a slit lamp light source used for forming a cornea optical slice and ensuring the definition and the contrast ratio of a cornea slice image; the Samm lens is used for shooting a cornea optical section, inclined imaging light path design is adopted, and the depth of field meets the requirement that the cornea section keeps clear imaging in the dynamic process; and the high-speed camera is positioned behind the Chemma lens and is used for receiving the cornea optical slice image imaged by the Chemma lens so as to record the dynamic deformation process of the cornea.

The invention relates to a smooth blasting mesoscopic process visual analysis system and method. The system comprises a borehole peeping instrument, an optical endoscopic instrument, a high-speed camera and a data processing device. The drilling peeping instrument is used for checking and recording speckle changes on the blasting hole of the smooth surface; the optical endoscopic instrument is used for recording optical data of speckle movement and crack propagation images in the blasting process; the high-speed camera is used for recording optical data of speckle movement and crack propagation images in the blasting process; and the data processing device is used for tracking each mass point frame by frame according to optical data of the borehole peeping instrument, the optical endoscopic instrument and the high-speed camera, and determining the displacement of the mass point at each moment by maximizing a cross-correlation function. According to the scheme, the optical data of the rock mass in the blasting process can be accurately collected and recorded, and then through data processing, the rock mass smooth blasting mesoscopic process can be effectively and visually analyzed.

To provide a stroboscope for weaving machines, which allows for efficiently adjusting the delay angle.SOLUTION: A stroboscope 10 for weaving machines is provided, comprising a light emitter 11, and a trigger control unit 13a configured to output a trigger signal to the light emitter 11 to cause the light emitter 11 to emit light when a main shaft 101 of a weaving machine 100 turns to cause the rotation angle to change by a delay angle from a reference angle. The trigger control unit 13a causes the delay angle to change by a given variation width within a given variation range.SELECTED DRAWING: Figure 1

A method and a system for single-shot multi-frame ultrafast terahertz imaging of a scene, the method comprising generating a pump beam and a probe beam: generating a THz beam from the pump beam and passing the THz beam through the scene: multiplexing the probe beam in the time domain and in the spatial-frequency domain, yielding a multiplexed probe beam; detecting a THz beam passing through the scene; guiding the multiplexed probe beam to a THz detection crystal and converting the multiplexed probe beam into mutually orthogonal linear polarized beams; guiding the mutually orthogonal linear polarized beams to a camera; and recovering frames of the scene from multiplexed images acquired by the camera.

The application discloses a device for shooting the initial shape of an explosively formed penetrator, which comprises a high-speed camera room and an anti-reflection background; a support is arranged in a light filter protection device to fix a warhead for generating the explosively formed penetrator; the light filter protection device is arranged on one side of the high-speed camera room and the anti-reflection background and is provided with a penetrator channel to shield explosion fire and detonation products generated by the warhead explosion, so that the high-speed camera is not overexposed by the explosion fire, and the image of the explosively formed penetrator generated by the warhead explosion is shot; the axis of the penetrator channel is coplanar with and perpendicular to the lens axis of the high-speed camera. The shooting device can weaken the explosion fire, reduce the concentration of the detonation products accompanying the flight of the penetrator, and provide sufficient light intensity for the flying body, so that the initial shape of the explosively formed penetrator is captured.

The application discloses an ultrafast imaging device and method, which comprises, along an optical path, an ultra-short pulse laser, a time-domain shaping mechanism for separating the ultra-short laser pulse into light of different wavelengths and separating the light of different wavelengths in time, a space-domain shaping mechanism for separating the light of different wavelengths after time separation into multiple regions and converting the light into multiple parallel light beams to irradiate the sample at different incident angles, an objective lens for multiple frame imaging of the sample after irradiating the sample, a second convex lens array for mapping each frame of image to different positions of a high-speed camera, and a high-speed camera for simultaneously capturing multiple frames of images of the ultrafast phenomenon. The application has the advantages of simple structure, high stability, convenient operation, conventional elements, low cost for capturing the ultrafast phenomenon, flexible setting of the imaging time scale in the range of femtosecond or picosecond, and integration of multiple super-resolution and high-field methods.

The invention discloses a four-exposure image acquisition method, belongs to a non-contact image acquisition technology, and aims to solve the problem that high-frequency and large-view flow field measurement cannot be realized simultaneously because a laser and a camera are not matched in the prior art. Equipment used in the method comprises two groups of convex lenses, a pyramid reflector, two groups of reflectors, an image sensor and a diaphragm, an optical signal of an object to be measured passes through the lenses and the diaphragm and then is divided into two paths by the pyramid reflector to reach corresponding channels, and the optical signal is captured by the image sensor after passing through the reflectors. The two groups of sensors are exposed for four times in one period, the time difference dt1 of two times of exposure of the first sensor is equal to the time difference dt3 of two times of exposure of the second sensor, and the exposure interval dt2 of the two sensors can be adjusted to be 1 / 2000 s to (1 / 200-1 / 2000) s. According to the invention, the signal acquisition efficiency is high, the intensity of each picture is consistent, and the velocity field measurement of the overall frequency of 200Hz and the local highest frequency of 2000Hz can be realized by matching with a multi-pulse laser.

The present invention relates to the field of ultrafast imaging technology, and discloses an ultrafast imaging device based on vector space encoding, comprising: an ultrafast pulse laser, a pulse shaper, which regulates a single pulse emitted by the ultrafast pulse laser to obtain a pulse envelope corresponding in time and spectrum; a reflective dark field microscopy imaging system, disposed after the pulse shaper, causing the pulse envelope to illuminate a target in a first direction and then reflect, emitting the reflective dark field microscopy imaging system in a second direction; a vector space encoding optical system, disposed in the second direction, comprising: a 4F optical system and a multilayer film phase plate disposed in the 4F optical system, the multilayer film phase plate being used to optically encode the pulse envelope; and an imaging system, disposed at the output surface of the 4F optical system, which obtains an encoded vector space image. The present invention achieves single-exposure ultrafast imaging by using a sub-wavelength multilayer film phase plate and utilizing the vector space characteristics of light of different frequencies for encoding.

The present invention discloses a synchronous timing control system for high-repetition-rate burst pulse laser illumination measurement, which relates to the field of laser illumination measurement technology. The system includes a first signal generator, a second signal generator, a third signal generator, a laser seed source, a laser amplifier, and a camera system. The first signal generator is configured to output a first control signal to the laser seed source and a second control signal to the second signal generator. The third signal generator is configured to output a third control signal to the laser amplifier and a fourth control signal to the second signal generator. The second signal generator generates a camera trigger signal based on the second control signal and only outputs the camera trigger signal to the camera system within the high-level range of the fourth control signal. The present invention ensures that camera exposure is strictly synchronized with the laser pulse, allowing the camera system to capture the laser illumination effect throughout the entire duration of the macropulse.

[Problem] To provide an imaging device and an imaging method with which it is possible to easily switch a double-speed setting without changing a clock and simplify a structure. [Solution] Provided are an imaging device that supports N-times faster imaging and an imaging method therefor, wherein an exposure control unit 7 causes a sensor 2 to be exposed in an exposure period in which exposure is performed at an M-fold speed equal to or less than the numerical value N of an N-fold speed for the video inputted from a lens. The exposure control unit 7 further exercises control by an exposure control signal so that a pixel signal is outputted in the same output period as the N-fold speed after the end of the exposure period and a given period after the end of the output period that corresponds to the numerical value M of an M-fold speed is made a disable period in which no pixel signals are outputted. A video rate conversion unit 5 outputs M frames of the M-fold speed video signal at the same timing as the N-fold speed.

The invention discloses a device for improving time uniformity of a framing camera based on curve pulses. The device comprises a cathode, an anode, a drift region, an MCP framing camera and a fluorescent screen which are arranged in sequence, the output end of a curve pulse generation circuit is connected with the initial end of the cathode, and the anode is grounded. The curve pulse generation circuit is composed of an IGBT driving module, a transformer coupling voltage reduction isolation module and a second-order Butterworth high-pass filtering module, and can generate curve pulses with non-linear change of the rising slope and apply the curve pulses to the cathode. Compared with the prior art, the single-path curve pulse is adopted to replace a traditional multi-pulse superposition scheme, the time uniformity of the pulse broadening framing camera is remarkably improved, and meanwhile the system structure is simplified.

An electronic device is provided. The electronic device includes at least one processor configured to obtain a plurality of first images for one or more objects as per a first frame rate using the camera based on a signal related to image recording and control the camera to perform focusing of a lens included in the camera on at least one of the one or more objects while obtaining the plurality of first images, provide a first portion of the plurality of first images as a preview through the display, control the camera to lock the focusing to prevent a change of the focusing on the at least one object, and identify a designated event related to obtaining the plurality of first images.

The invention relates to a method for determining at least one physical characteristic of a belt drive and / or a belt in the belt drive in a static and / or dynamic operating state. The invention also relates to a computer program for implementing such a method. Furthermore, the invention relates to a device for determining at least one physical characteristic of a belt drive and / or a belt in a belt drive in a static and / or dynamic operating state.

The present invention is applicable to the field of ultrafast optical imaging and provides a compact single-shot ultrafast framing direct imaging device, comprising: a femtosecond laser; a frequency multiplier; a beam splitter for splitting the frequency-doubled light and the remaining un-frequency-doubled fundamental light; a stretcher for pulse-stretching the fundamental light to obtain signal light; a temporal-spatial encoding system for splitting the signal light after irradiating an object into a two-dimensional array of equal-intensity sub-beams, and adding different time delays to each sub-beam in the array to obtain an illumination signal light array with different time delays that carries object information; a delayer for adjusting the delay of the pump light to synchronize the pump light with the illumination signal light array; and an optical parametric amplification imaging system for coupling the illumination signal light array with the delayed pump light to generate idler light carrying object information and record the image. This device achieves single-shot multi-frame imaging while maintaining high temporal and spatial resolution.

The utility model relates to the technical field of optical test equipment, in particular to a filter wheel and a filter device, the filter wheel comprises a wheel carrier, the wheel carrier is a hollow regular polygon prism structure with even-numbered edges, and the end part of the wheel carrier is provided with a connecting shaft; the two opposite side walls of the wheel carrier are evenly provided with the optical filters and the light-transmitting pieces, the optical filters and the light-transmitting pieces are the same in size and weight, the rotating shaft can be prevented from blocking an optical path, global imaging of the optical filtering area can be achieved, the imaging quality of optical equipment can be ensured, and the optical equipment has the advantage of being wide in application range. The light filtering device comprises a mounting bracket; according to the filter wheel, the wheel carrier is connected to the mounting bracket through the connecting shaft, and the wheel carrier can rotate around the axis of the connecting shaft; and the driving assembly is in transmission connection with the connecting shaft.

Described is a Single-Photon Avalanche Diode (SPAD) array microchip comprising: a plurality of SPAD sensors; and a triggering circuit configured to detect and read out the triggering order of SPAD sensors over a timing interval wherein the timing interval comprises one or more frames. An event based neuromorphic SPAD array microchip is also described. The chip architecture and triggering methodology takes a local group of SPAD sensors connected in a certain way and by using simple digital circuits emulating how neurons behave, patterns within a local receptive field are identified. Only when these unique patterns or features are identified are "events" triggered for each receptive field in the order they occur, or in an asynchronous manner. Each neuromorphic circuit (or collection of silicon neurons) act over overlapping receptive fields, and are tiled across the entire visual spatial field of the SPAD array to a form a convolution layer.

The present application relates to a kind of multi-cut seam cartridge explosion crack surface extension quantitative analysis test system and method, belong to the technical field of explosion crack analysis, can simultaneously observe the explosion crack surface extension process in two dimensions, real-time obtain clear, accurate crack surface extension image, realize explosion crack surface extension quantitative analysis;The system includes optical path acquisition subsystem, explosion crack model body, loading frame and initiator;The loading frame is used to fix the explosion crack model body, realize the up and down and left and right movement of explosion crack model body;The explosion crack model body is organic glass block with multi-cut seam cartridge built-in, for explosion to obtain the crack sample to be analyzed;The initiator is used to detonate the multi-cut seam cartridge in the explosion crack model body;The optical path acquisition subsystem includes optical path module and acquisition module;The optical path module is used to generate light line meeting image acquisition;The acquisition module is used to collect the explosion crack data.

The present invention relates to an information processing apparatus, an information processing method, and a program, by which a camera exposure can be appropriately controlled using captured images from a plurality of cameras. A first camera imaging range at a second time is predicted at a time before the second time after a first time. An image of an overlapping region is extracted from a captured image at the first time from a second camera, in which the predicted first camera imaging range at the second time overlaps with the second camera imaging range at the first time. An exposure of the first camera at the second time is controlled based on the extracted overlapping region image.

The utility model discloses an intelligent lamp with a camera shooting function, and belongs to the technical field of lamps. Comprising a base, an adjusting mechanism is arranged at the upper end of the base, the adjusting mechanism comprises a bottom frame, the bottom end of the bottom frame is connected with the upper end of the base, a first supporting rod is installed at the upper end of the bottom frame, a second supporting rod is slidably installed in the first supporting rod, and the upper end of the second supporting rod is sleeved with a lampshade; an LED lamp is arranged at the top end of the second supporting rod, a monitoring mechanism is arranged at the upper end of the lampshade and comprises an adjusting seat, the bottom end of the adjusting seat is connected with the top end of the lampshade, a rotary table is rotationally connected to the center of the upper end of the adjusting seat, and a movable seat is installed at the upper end of the rotary table; the interior of the movable seat is rotationally connected with a camera; according to the intelligent lamp, the practicability of the intelligent lamp can be effectively improved, and the intelligent lamp has high practical value.

An electronic device and a method for controlling same are disclosed. The electronic device includes a first camera having a first lens with a first focal distance, a second camera including a second lens having a second focal distance different from the first focal distance, a memory, and a processor which: acquires information on a first object included in a first image acquired by capturing surroundings of the electronic device through the first camera if it is identified, based on of the acquired information on the first object, that information on a second object associated with the first object exists, acquires a second image through the second camera and based on whether the second object is included in the acquired second image, determines a point of time when high-speed image capture is to be performed using the first camera.

The application provides a full solid-state ultrafast electro-optical framing imaging system and an imaging method, and aims to solve the technical problems that the framing images are not completely separated due to the small deflection angle of an electro-optical crystal in the existing ultrafast pulse framing imaging technology based on electro-optical deflection, and the imaging quality and the system response speed are significantly reduced when the problem of the small deflection angle of the electro-optical crystal is solved by increasing the deflection angle through a rotating mirror or the compressed sensing imaging of overlapping beams. The full solid-state ultrafast electro-optical framing imaging system adopts a lithium niobate crystal as an electro-optical deflection device, and arranges an upper electrode array and a lower electrode array on the upper and lower surfaces of the lithium niobate crystal, so that a periodic refractive index distribution is formed in the lithium niobate crystal along the pulse laser emission direction, and the pulse laser passing at different moments is deflected at different angles, thereby ensuring the system response speed and the imaging quality on the basis of meeting the electro-optical crystal deflection angle requirement.

This invention discloses a method and device for measuring the particle size of micron-sized particles during impact with a wall under high-speed photography conditions, belonging to the fields of image processing and microscopic particle size detection technology. Based on traditional particle shadow velocimetry, this invention utilizes a particle transport device to create identical motion conditions for both standard and test particles. A high-speed camera captures images of the moving particles against a similar background. The acquired images are then processed to obtain the measured particle size. By analyzing the mathematical relationship between the actual particle size of the standard particle and its measured value, the actual particle size of the test particle is finally derived. This invention establishes a particle image processing workflow that can rapidly process large numbers of image samples, effectively achieving high-speed and high-precision measurement of micron-sized particle size during impact with a wall compared to traditional particle shadow velocimetry.

The invention discloses a size-adjustable uniform panel light source and a control method thereof, and relates to the field of high-speed photography. Four groups of I-shaped blades capable of independently and linearly moving in two parallel planes are encircled from four sides to form a rectangular bright window with continuously adjustable size; the integrated control system receives an instruction and drives the blades to precisely and synchronously move, and meanwhile, the brightness of the basic light-emitting unit is adjusted in a linkage manner, so that the precise matching between a light-emitting area and the size of a measured object is realized on the premise of ensuring the illumination uniformity and the edge sharpness; the problems that a backlight source with a fixed size is poor in adaptability and much in image stray light are solved, and efficient and high-quality flexible backlight illumination is achieved.

The invention relates to the technical field of court facilities, and provides a judgment robot for a Pick court, which comprises a bottom plate, a camera alignment mechanism, a driving mechanism, a tire mechanism, a control system, a first visual component and a second visual component, and the first visual component and the second visual component are respectively arranged on two sides of the camera alignment mechanism and can cooperatively work to cover the whole court. The vision assembly is used for obtaining the tracking picture of the athlete, the control system is used for judging the Pick ball according to the global picture shot by the camera alignment mechanism and the athlete pictures tracked and shot by the first vision assembly and the second vision assembly respectively, and the amplified tracking image of the athlete is beneficial for judging whether action violation exists or not. For example, rotating serving, interception serving and the like exist, so that the penalty accuracy is improved.

The present application belongs to the cross technical field of material preparation and solid waste utilization, and provides a cold-state simulation device for a fiber preparation process by a centrifugal method, which comprises a medium storage box, a flow valve, a rotating shaft, a rotating roller and a high-speed camera module, the medium storage box is connected with the flow valve through a pipeline, the flow valve is connected with an outflow port through a pipeline, the outflow port is located above the rotating roller, the rotating roller is fixed on the rotating shaft, the rotating shaft is connected with a rotating shaft driving mechanism, a diffuser plate and an LED light source are sequentially arranged behind the rotating roller, and a high-speed camera module is arranged in front of the rotating roller. And a cold-state simulation method, which adopts a high-speed camera module to record the motion and spreading process of fluid medium flowing out of the outflow port on the roller surface of the rotating roller. By adjusting different equipment parameters, the motion and spreading process of the fluid on the roller surface can be directly observed, which helps to find out the factors affecting the motion of the fluid on the roller surface.

A shooting control method, apparatus and device in ink droplet observation and a storage medium, the method comprising: in response to an ink droplet observation instruction, obtaining an ink jet mode selected by an ink jet device to execute, and determining a theoretical flight speed of an ink droplet according to the ink jet mode; adjusting the illumination execution logic in the ink droplet shooting process according to the theoretical flight speed and a preset illumination execution logic corresponding relation; wherein the illumination execution logic corresponding relation comprises illumination execution logics corresponding to different theoretical flight speeds, and the illumination execution logics comprise the illumination intensity, the number of illumination time periods and the duration of the illumination time periods in each ink droplet shooting process. According to the scheme, it can be finally ensured that the ink droplet picture easier to analyze and calculate can be obtained through shooting with the appropriate illumination intensity, the appropriate light supplementing times and the appropriate light supplementing duration, and then ink droplet observation is more efficient and accurate when ink droplet observation is carried out on ink-jet printing equipment with the ink droplet flying speed capable of being changed.

An electronic device is provided. The electronic device includes at least one processor configured to obtain a plurality of first images for one or more objects as per a first frame rate using the camera based on a signal related to image recording and control the camera to perform focusing of a lens included in the camera on at least one of the one or more objects while obtaining the plurality of first images, provide a first portion of the plurality of first images as a preview through the display, control the camera to lock the focusing to prevent a change of the focusing on the at least one object, and identify a designated event related to obtaining the plurality of first images.