2959results about "Optical apparatus testing" patented technology

A computer implemented system configured for receiving obtaining sensor data comprising one or more displacements as a function of time of one or more targets attached to a structure in response to point loads applied to the structure; optionally receiving image data representing images of the vehicles comprising the point loads traversing the structure; and determining, from the displacements, at least one of a health status of the structure, or forces applied by one or more of the point loads.

The invention, which relates to the technical field of LED lighting testing, discloses a full-life-cycle accelerated testing system for an intelligent high-power LED lighting device, comprising an environmental parameter detection module, a full-life-cycle testing module, a heat dissipation system module, a service life prediction module and a failure analysis module. The environmental parameter detection module collects multi-field coupling environmental parameters; the full life cycle test module establishes an acceleration factor mathematical model, calculates an acceleration coefficient and determines an acceleration test working condition parameter; the heat dissipation system module selects and adjusts the cooling intensity of the natural convection unit or the flow boiling unit; the life prediction module constructs a life physical-statistical hybrid prediction model and predicts the residual life of the device; the failure analysis module analyzes a heat-electricity-light-stress coupling failure mechanism and generates a performance optimization scheme. According to the invention, the accelerated test and performance optimization of the whole life cycle of the LED lighting device are realized through the cooperative work of multiple modules, and the test efficiency and accuracy are improved.

A transportable vehicle enclosure for inspecting vehicles is formed as a mono-block suitable for loading onto a transporter and unloading from a transporter. The enclosure includes side, front, rear, ceiling and floor portions, at least one of the portions being configured to allow vehicular assess whereby, in use, a vehicle maybe placed within the enclosure. The enclosure further includes a plurality of cameras integrated into or on a plurality of proportions for imaging each side of the vehicle when a vehicle is located in the enclosure.

A device for inspection during the opening and closing of an umbrella, relating to the technical field of umbrella inspection. The device comprises a case (1); a raising / lowering mechanism (2) and a servo driven mechanism (7) are respectively mounted at the top of the case (1); dual-axis rotating mechanisms (3) are mounted on a raising / lowering member of the raising / lowering mechanism (2) and at the top of the raising / lowering mechanism (2); a clamping head (4) is fixedly connected to the movable end of the dual-axis rotating mechanism (3) located at the top of the raising / lowering mechanism (2); a pressing air cylinder (13) for fixing the top end of an umbrella is mounted inside the clamping head (4); a telescopic rod (5) is fixedly connected to the output end of the dual-axis rotating mechanism (3) located on the raising / lowering member. The top of the umbrella is fixed by means of the pressing air cylinder (13), the servo driven mechanism (7) and a two-level angle adjuster (6) are used to adjust the position and angle of an umbrella handle clamping mechanism (8), and by means of cooperation of the other dual-axis rotating mechanism (3) and the telescopic rod (5) as well as the other two-level angle adjuster (6), the position of a middle slot clamp (9) is determined, so that the angle of the umbrella can be changed to perform testing during opening and closing, and a plurality of industrial cameras (10, 12) can record states during the opening and closing of the umbrella.

The present disclosure provides an optical component, which may be a metasurface grating, including (a) a substrate; and (b) an array of subwavelength-spaced phase-shifting elements, which are tessellated on the substrate to produce, when illuminated with a polarized incident light, a diffracted light beam with a distinct polarization state for each of a finite number of diffraction orders, wherein the finite number is 2 or more.

The invention discloses a display screen module detection device, and relates to the technical field of display screen module detection, the display screen module detection device comprises a detection table, a laser detection module is arranged on the detection table, and the laser detection module comprises a laser confocal microscope unit executing rotation and translation motion, an extrusion module and a detection module arranged at the side end of the laser detection module, comprising an extrusion part capable of vertically moving and rotating and a pressing tool assembly arranged at the side end of the extrusion part, and an extrusion station is arranged below the extrusion part; the extrusion module can automatically adjust the pressure head to the extrusion station according to needs, the time for replacing the pressure head is saved, after the extrusion piece adjusts the position of the pressure head of the detection station, the hold-down clamp assembly rotates to carry out arc scratch testing on the display screen module, testing is diversified, scratch and friction testing data of different modes can be provided, and the testing efficiency is improved. The accuracy of the whole test is improved through different data, and the test efficiency and accuracy are improved.

The invention discloses a photoelectronic device testing method, which relates to the field of optoelectronics, and comprises the following steps: collecting historical test data, setting initial environment parameters for a photoelectronic device to be tested, adjusting the initial environment parameters according to an environment parameter adjusting strategy, recording specific numerical values of the adjusted environment parameters in each stage, and determining the photoelectronic device to be tested on the basis of the recorded environment parameters. Performing preliminary analysis on the performance index of each stage to obtain a preliminary identification result of the optoelectronic device, and establishing a fault identification model according to historical test data and the preliminary identification result of the optoelectronic device to obtain a fault mode of the optoelectronic device; the fault identification model is established by combining historical test data and a preliminary identification result, accurate prediction of the fault mode of the optoelectronic device is realized, and a clear direction is provided for subsequent specific part inspection.

There is provided a photonic integrated apparatus for determining an orientation and / or a position of an optical waveguide, by measuring a relative intensity and a relative phase difference of the probe light signal incident on a sensor array. The phase profile of the probe light signal projected spatially on the sensor array is particularly sensitive to small changes in the optical probe's orientation and distance. The apparatus measures the relative intensity and relative phase difference of the probe light signal incident on a sensor array. A photonic integrated sensor circuit comprises the sensor array and one or more optical interferometric circuits. Changes in the sensed relative intensity and relative phase difference of the probe light signal, as sampled by the sensor array, indicate variations in the relative orientation and / or distance between the optical waveguide and the sensor array.

Apparatus and methods for monitoring the status of a floating roof. The floating-roof tank assembly has: an impermeable roof section, and a floating-roof seal configured to span between the impermeable roof section and components of a container. One or more deformable floats are attached to the roof section to provide buoyancy so that the roof floats on top of the liquid contained in the container. To monitor the status of the floating roof tank, it is provided with a fiber optic sensor array comprising one or more fiber optic sensors. A light source configured to transmit light to the fiber optic sensors and a receiver configured to detect light from each fiber optic cable after it has interacted with the fiber optic cable. Based on the received light, a controller configured to process the light received by the receiver to determine the status of the floating roof tank.

The invention provides a device and a method for testing thermal deformation of a reflector, and relates to the technical field of optical assembly, calibration and detection.The testing device comprises an interferometer, a three-comprehensive test box, a standard plane reflector, first window glass, second window glass and a holographic original, firstly, the thermal deformation of the window glass on the two sides in the three-comprehensive test box is measured; measuring the thermal deformation of the reflector to be measured, analyzing and calculating the surface shape error caused by two times of thermal deformation to obtain the Zernike polynomial coefficient value of the reflector to be measured, and obtaining the surface shape value of the reflector to be measured through fitting analysis, namely the thermal deformation of the reflector to be measured. The problems that in the prior art, the surface shape change condition in the actual load working environment is difficult to accurately measure and the influence of window glass on the reflector to be tested is difficult to accurately measure are solved, the testing precision is improved, and in addition, the surface shape error of the reflector to be tested can be quantitatively analyzed through all Zernike polynomial coefficient values in the testing result.

The invention provides a calibration method and device of motion capture equipment, equipment and a medium, the motion capture equipment is worn on a limb of a human body, the method is applied to head-mounted display equipment, the head-mounted display equipment comprises a camera, and the method comprises the following steps: collecting an image of the motion capture equipment through the camera; according to the motion capture equipment image, determining target attitude information of an equipment coordinate system relative to a world coordinate system; and calibrating the motion capture equipment according to the target attitude information. The motion capture equipment is calibrated by using the image of the motion capture equipment, so that the calibration difficulty of the motion capture equipment can be effectively reduced, the calibration time can be shortened, the calibration error can be reduced, and the calibration precision of the motion capture equipment can be improved.

A method for monitoring pipeline integrity is provided. The method includes obtaining, using at least one hardware processor, acoustic signal captured by at least one optical fiber arranged along a pipeline. The method includes inputting, using the at least one hardware processor, the acoustic signal to a machine learning model. The machine learning model is trained to execute a first analysis on a first representation of the acoustic signal and a second analysis on a second representation of the acoustic signal, the first analysis being independent to the second analysis. An output of the trained machine learning model is at least one of a first result based on the first analysis or a second result based on the second analysis. The method includes determining, using the at least one hardware processor, an indication of pipeline integrity based on the at least one of the first result or the second result.

The invention relates to the technical field of lens testing, and discloses a multifunctional optical lens testing lens device which comprises a connecting frame. A casing; a lens body; the positioning assembly is used for fixing the position when the lens body is detected; the detection assembly is used for carrying out multidirectional detection on the lens body; the detection assembly comprises an air pressure detection part, an impact detection part and a vibration detection part; and a driving assembly. According to the multifunctional optical lens testing lens device, multi-direction detection of the lens can be realized through the arranged detection assembly, and multi-direction synchronous detection in vibration, impact, air tightness, waterproofness and high-temperature environments is realized, so that each detection is in a linked state, the detection effect of the lens in different high-complexity environments is improved, and the detection efficiency is improved. And the whole detection process is carried out in one device, and single position conversion is not needed, so that a high-intensity environment is provided for the test of the lens, and the stability of the lens is finally detected.

In some embodiments, the present invention comprises a new metrology device (apparatus) comprising a camera, an optical imaging system, and a reference target for the non-destructive evaluation of samples as well as methods and systems thereto. In some embodiments, the device includes a methodology to measure vision rays that enter the optical system at a specific angle by analyzing the patterns of a reference target at different locations. This apparatus also allows measuring the vision rays deflected by samples placed in front of the optical system. The deflection may have occurred through refraction by transparent samples or by reflection of reflective samples. The obtained vision rays provide information on the geometric wavefront, and hence, the sample surface.

The utility model provides screen defect detection equipment which comprises a thickness measuring mechanism used for measuring the thickness of an electronic product to be detected; the jacking mechanism is used for bearing the to-be-detected electronic product and can lift the to-be-detected electronic product according to a measurement value of the thickness measurement mechanism, so that a screen of the to-be-detected electronic product is located on a detection reference surface; the displacement mechanism is connected with the jacking mechanism and can drive the jacking mechanism to displace, so that the screen of the to-be-detected electronic product displaces on the detection reference surface; and the screen detection mechanism faces a detection position on the detection reference surface and can detect the screen of the to-be-detected electronic product passing through the detection position. Therefore, the defect detection can be performed on the screens of the to-be-detected electronic products with different thicknesses, and a plurality of types of products can be simultaneously produced in a mixed manner, so that the productivity is improved.

A method and system is provided in a simulation platform for optimizing the extrinsic parameters of fisheye-lens cameras installed on a vehicle. A simulated vehicle is established according to vehicular characteristics of associated actual vehicle over the simulated platform, thereby a lot of simulated checkerboard calibration plates are placed surrounding the simulated vehicle. A lot of simulated fisheye-lens cameras are generated and mounted on the simulated vehicle based on intrinsic parameters associated with actual fisheye lenses, and fisheye images are derived by using the simulated fisheye-lens cameras, respectively. The initially extrinsic parameters of each of the simulated fisheye-lens cameras are calculated over the simulated platform by using the first characteristic points of its own first fisheye image. Those initially extrinsic parameters may be used to optimize stitching images of the vehicle-surrounding-view systems, or be used to calculate installation tolerances when disposing fisheye-lens cameras physically.

A method and system is provided in a simulation platform for optimizing the extrinsic parameters of fisheye-lens cameras installed on a vehicle. A simulated vehicle is established according to vehicular characteristics of associated actual vehicle over the simulated platform, thereby a lot of simulated checkerboard calibration plates are placed surrounding the simulated vehicle. A lot of simulated fisheye-lens cameras are generated and mounted on the simulated vehicle based on intrinsic parameters associated with actual fisheye lenses, and fisheye images are derived by using the simulated fisheye-lens cameras, respectively. The initially extrinsic parameters of each of the simulated fisheye-lens cameras are calculated over the simulated platform by using the first characteristic points of its own first fisheye image. Those initially extrinsic parameters may be used to optimize stitching images of the vehicle-surrounding-view systems, or be used to calculate installation tolerances when disposing fisheye-lens cameras physically.

The invention relates to a quality management method and system of a single-port elastic test assembly and a terminal, and relates to the field of product quality detection.The quality management method comprises the steps that image detection information and ultrasonic detection information of a chip contact assembly in a preset detection area are obtained; selecting a chip contact assembly image from the image detection information box based on a preset chip contact assembly feature; determining model information from a preset model database according to the chip contact assembly image; determining fiber core reference information and cladding image reference information according to the model information; determining fiber core detection information according to the ultrasonic detection information; determining whether the fiber core reference information is consistent with the fiber core detection information or not and whether the image detection information is consistent with the cladding image reference information or not; and if the fiber core reference information is inconsistent with the fiber core detection information or the image detection information is inconsistent with the cladding image reference information, repairing by a preset repairing method. Therefore, the quality of the produced and manufactured chip contact assembly is improved.

The invention relates to the field of optical filter module performance testing, in particular to efficient testing equipment for optical filter precision machining, which comprises an outer cylinder, a support ring and the like. According to the efficient test equipment for optical filter precision machining, high-temperature water mist is sprayed to the surface of the optical filter module, the light transmitting effect of the optical filter module is continuously detected through the optical sensor, suction work is conducted in the outer cylinder through the annular air conveying pipe, meanwhile, the vibration unit continuously generates vibration on the surface of the optical filter module, and the optical filter module is subjected to precise machining. The penetration speed and the diffusion range of high-temperature water mist in the optical filter module are increased, and the detection effect on the waterproof performance of the optical filter module is enhanced by quickly, accurately and intuitively feeding back the waterproof performance of the optical filter module. The technical problems that the waterproof performance testing efficiency of the optical filter module is low due to long-time waterproof testing work, and whether high-temperature water mist permeates in the optical filter module cannot be visually observed are solved.

The invention discloses automatic aging equipment for a vehicle-mounted screen. The automatic aging equipment comprises an aging furnace body, a material receiving translation machine, a feeding transfer table, a ground rail travelling crane, a jig aging bin, an automatic cooling line, an elevator, a wire pulling translation machine, a discharging translation machine, a jig return line and an aging jig. The material receiving translation machine, the feeding transfer table, the ground rail travelling crane, the jig aging bin, the automatic cooling line, the elevator, the line pulling translation machine, the discharging translation machine and the jig return line are sequentially connected to form an automatic production process, and the aging jig flows among the stations and is used for bearing vehicle-mounted screen products, so that the labor cost of a factory is effectively saved, and the engineering energy consumption is reduced.

The invention relates to the technical field of circuit breaker switch monitoring, and provides a method for monitoring the position state of a circuit breaker switch based on a video recognition technology, and the method comprises the steps: collecting a real-time image of a circuit breaker through a camera device, judging the physical state of the circuit breaker, and determining a first judgment result; acquiring real-time data of the relay protection device, recording the operation state of the circuit breaker, and determining a second judgment result; inputting the first judgment result and the second judgment result into a preset signal response device to generate a corresponding response action; wherein the response action comprises an opening action, a fault action and a closing action.

Disclosed herein is an optical frequency comb generator for a distributed acoustic anomaly detection system. The system can include a continuous wave frequency modulated laser source configured to generate a laser signal. The system can include an acousto-optical modulator configured to modulate the laser signal by altering an amplitude and / or frequency of the laser signal based on an RF drive signal applied to the AOM, and to output an optical pulse with multiple frequency sidebands based on the modulation. The output can form an optical frequency comb usable detecting and locating acoustic anomalies within a structure under observation.

Provided are a visual inspection device, a visual inspection method, and a visual inspection program that make it possible to accurately evaluate a subject having optical transparency.　The present invention is provided with: a mounting part (10) on which a lens L is mounted; an illumination unit that is capable of irradiating the mounting part (10) with illumination light having a plurality of shapes; an image capturing unit (30) that captures an image of the mounting part (10); a driving unit that changes the relative positions of the mounting part (10), the illumination unit (20), and the image capturing unit (30); and a processor that performs control for causing the image capturing unit (30) to capture an image of the lens L a plurality of times, while changing the relative positions and the shape of the illumination light. The processor causes the image capturing unit (30) to capture an image of the lens L including reflected light formed by reflection of the illumination light by the lens L, as well as an image of the lens L including transmitted light formed by transmission of the illumination light through the lens L.

A device for interface shape of an optical element including at least one low-coherence light source, at least one optical sensor, an interferometric device illuminated by the light source and configured for shaping at least one measurement beam and at least two reference beams, directing one measurement beam to the element to pass through the interfaces, and directing the light from at least two interfaces to the sensor or sensors, each sensor globally configured for detecting at least two interference signals resulting respectively from interferences between the measurement beam reflected by one of the at least two interfaces and one of the reference beams; the measurement device also including a positioner for positioning a coherence area at the level of each interface and a digital processor for producing, from the interference signals, an item of information of the shape of each interface according to a field of view.

The invention discloses an impact resistance detection device and method for light guide film production, and relates to the technical field of film production. The device comprises a supporting frame and a light guide film which are arranged on a supporting base, and further comprises a positioning unit which is arranged on the supporting base and comprises a positioning assembly and a pushing assembly; the impact unit provided with an impact ball is arranged on the positioning unit and comprises a deflection assembly, an impact assembly and a distance adjusting assembly, the deflection assembly is used for adjusting the angle of the impact assembly, and the distance adjusting assembly is used for adjusting the stroke of the impact ball according to the deflection angle to achieve equal-force impact. The device has the advantages that multi-angle impact resistance detection can be carried out on the light guide film, the detection range is wider, the impact stroke of the impact ball is flexibly adjusted according to the inclination angle after the inclination angle is adjusted, the impact force of the impact ball impacting the light guide film at different inclination angles is kept the same, drop point deviation cannot occur under the action of gravity, and the detection accuracy is improved. And the detection result is more accurate.

The invention discloses an intelligent diagnosis system for health and collapse risks of a vertical shaft structure, and relates to the technical field of mine safety monitoring. The acute lesion diagnosis module is used for diagnosing acute physical damage of a sensing optical fiber so as to generate a spatial data confidence index map; the chronic lesion compensation module is used for compensating chronic signal drift caused by internal residual stress relaxation of the sensing optical fiber so as to establish a dynamic zero correction vector; the signal fusion processing module purifies the original apparent strain information through a nonlinear weighting algorithm according to the output of the first two modules, and reconstructs a net structure strain field calibrated by the space-time drift of the instrument; and the collapse risk prediction module is used for intelligently diagnosing and predicting the structural health state and the collapse risk of the vertical shaft. According to the method, the authenticity of monitoring data can be improved from the source, the false alarm rate is greatly reduced, and long-term and weak structural evolution omen are effectively captured.

The invention discloses a vibration monitoring and displacement identification method for a towering steel structure based on machine vision, and relates to the technical field of towering steel structures. Comprising the following steps: S1, visual acquisition and reference calibration: arranging visual acquisition equipment in the height direction and the circumferential direction of the towering steel structure according to mechanical characteristics of a vertical stiffness mutation region and a dynamic response sensitive part of a geometric asymmetric distribution characteristic of the structure; a three-dimensional coordinate system is established based on a structure installation reference surface, fixed reference monitoring points are arranged in a tower foot symmetric area and a mast antenna root, three-dimensional coordinate data of the reference points are synchronously collected, the collection range completely covers a node concentration area and a key stress part of a structure transparent area, and a continuous image sequence of the structure surface is captured in real time; the resolution and the sampling frequency of the visual acquisition equipment are determined according to the inherent frequency of the structure and the vibration response characteristics, and calibration is completed through reference point coordinates after the equipment is installed; s2, carrying out image preprocessing and feature enhancement; S3, carrying out feature point extraction and trajectory tracking; S4, carrying out vibration displacement calculation and twin fusion; and S5, carrying out multi-source verification and structural state linkage treatment.

The invention discloses a display light color detection system, and relates to the technical field of low-brightness display light color detection, and the system comprises a dynamic modulation module which is configured to carry out the high-frequency pulse modulation of a dark-state signal of a detection object, and is used for enabling the dark-state signal to carry a modulation component of a characteristic frequency; the time sequence division acquisition unit comprises a high-speed optical shutter assembly and a detector, and the high-speed optical shutter assembly synchronously switches the on-off state of an optical path according to the characteristic frequency; according to the invention, through high-frequency pulse modulation of dark state signals, time-sequence-divided acquisition of noise and signals and time-frequency domain combined decoupling, traditional hardware limitation is broken through, ultra-low brightness signals and stray light interference are effectively separated, 0.01 cd / m < 2 >-level high-precision detection is realized, the detection efficiency is improved by more than 7 times, and the misjudgment rate is significantly reduced. The problems of missing detection of a novel display technology and the yield of an automatic production line are solved, and an active coding-time sequence calibration-cross-domain cooperation framework has remarkable innovativeness and industrial value.

Provided is a method for inspecting a light-transmissive laminate, said method being capable of detecting foreign substances that are very small as compared with the prior art. This method for inspecting a light-transmissive laminate detects 8-50 m-sized defects in a light-transmissive laminate by performing a transmission inspection in a state in which the light-transmissive laminate is fixed in the air one by one. For example, the defect detection includes the steps of: creating an XY coordinate graph of a defect by aligning a focal point of an optical system having a predetermined magnification with a surface of a first main surface of a light-transmissive laminate and scanning the light-transmissive laminate with the optical system; a step for creating an XY coordinate map of the other defect by shifting the focal point of the optical system inward in the thickness direction from the surface of the first main surface of the light-transmissive laminate by a predetermined distance and scanning the light-transmissive laminate with the optical system; and integrating the created XY coordinate maps of the defects.