1600results about "Optical apparatus testing" patented technology

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 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.

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.

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.

The invention relates to the technical field of industrial automation and machine vision, and discloses an automatic debugging calibration system and method. The method comprises the following steps: establishing standard parameters, recording hardware installation parameters and software process parameters of reference laser processing equipment, and establishing a standard parameter library; preparing to-be-debugged equipment, and completing basic hardware installation and program import of the to-be-debugged equipment according to the standard parameter library; starting a VAC automatic debugging process, and sequentially executing automatic focusing confirmation, photographing position confirmation, light source intensity confirmation and pixel equivalent confirmation; coordinate system calibration of the laser and the camera is executed, and the coordinate transformation relation of the laser and the camera is established; static and dynamic repeatability verification is carried out, and precision and stability are evaluated; the optimized debugging parameters are stored, and parameters of other devices are migrated; through the automatic VAC process, manual debugging of several hours or even several days is shortened to the minute level, the machine difference caused by human factors is eliminated, and efficiency and consistency are greatly improved.

Method for operating an EUV mirror system, in which heating radiation emitted by a radiation source (41) is directed onto an EUV mirror (M1-M6) using a heating device (29). A portion of the heating radiation (32) is coupled out. A sensor (39) records measured values ​​relating to the radiant power of the coupled-out portion (38) of the heating radiation (32). A first comparison is performed between an absolute value (47) of the measured radiant power and a first threshold value (44). A second comparison is performed between a rate of change (48) of the measured radiant power and a second threshold value (46). The first comparison and the second comparison are evaluated in order to determine an error in the heating device (29). The invention also relates to an EUV mirror system and a microlithographic projection exposure system.

An electro-optical device capable of identifying a target in the time series of the images so as to measure motion of a civil structure, such as a bridge, in response to forces (such as the weight of a vehicle traversing the bridge).

The invention discloses full-automatic dial plate pointer press-fitting equipment and method, and relates to the technical field of pointer press-fitting. The full-automatic dial plate pointer press-fitting equipment comprises a conveyor and a box body, the conveyor comprises a conveying belt, a plurality of positioning molds are arranged on the conveying belt, a first material disc and a second material disc are arranged in the box body, a first mechanical arm and a second mechanical arm are arranged in the box body, a pneumatic suction cup is arranged at the tail end of the first mechanical arm, and a second suction cup is arranged at the tail end of the second mechanical arm. The tail end of the second mechanical arm is fixedly connected with a mounting plate, and a plurality of press fitting modules are arranged on the mounting plate and used for press fitting of the pointer body. According to the full-automatic dial plate pointer press-fitting equipment and method, assembly line automatic press-fitting is adopted, the press-fitting efficiency can be improved, the extrusion force during pointer press-fitting can be controlled, after press-fitting is completed, the tightness of the pointer can be automatically detected, and the press-fitting efficiency and quality are guaranteed.

The invention belongs to the technical field of optical precision control, and particularly relates to an automatic calibration system and method for a fast steering mirror sensor, and the calibration method comprises the following steps: S1, carrying out the initialization configuration; s2, generating and sending an instruction sequence; s3, data storage: storing the angle data, fed back by the autocollimator, of the fast steering mirror; s4, dynamic calibration parameters are generated through data segmentation and data fitting; S5, calibration output is carried out; and S6, performing real-time compensation. The calibration system comprises an autocollimator, an upper computer and a fast reflecting mirror controller, a step angle instruction is automatically generated and sent through the upper computer, feedback data of the autocollimator is collected in real time, and first-order or second-order fitting is selected based on data segmentation and model selection to generate dynamic calibration parameters, so that the calibration accuracy of the fast reflecting mirror is improved. Global fitting is replaced by multi-interval independent linear fitting, the characteristic that nonlinearity of the sensor changes along with the angle is adapted, and the compensation precision is improved.

The invention relates to the technical field of optical measurement, and discloses a biaxial galvanometer error calibration method and system, electronic equipment and a storage medium, and the method comprises the steps: obtaining a camera internal reference containing an internal reference matrix and a distortion coefficient through a calibration board; establishing an ideal geometric transformation model of the biaxial galvanometer, and defining a first galvanometer transformation matrix determined by the rotation angle of the first galvanometer and the first distance and a second galvanometer transformation matrix determined by the rotation angle of the second galvanometer and the second distance; installing error parameters are introduced, and a complete coordinate transformation model used for describing a complete light path transformation relation from an actual camera coordinate system to a final imaging coordinate system is formed; calibration data are collected, galvanometer system parameters and installation error parameters are optimized based on re-projection errors, re-projection residual errors are constructed, the re-projection residual errors are minimized through a nonlinear optimization algorithm, and optimal parameters are obtained. The installation error can be accurately calibrated and effectively compensated.

The invention discloses a test method and device based on vehicle-in-the-loop, electronic equipment and a storage medium. The method is realized by a test system based on vehicle-in-the-loop, and the system comprises a scene simulation platform and a vehicle platform. The method comprises the following steps: constructing a traffic simulation scene by adopting a scene simulation platform, and obtaining virtual perception information; sending the virtual perception information to a vehicle platform for processing to obtain virtual scene information, and displaying the virtual scene information on a front windshield of the tested vehicle; and the tested vehicle is controlled according to the virtual scene information on the front windshield of the tested vehicle, and the pose information of the tested vehicle is collected and fed back to the scene simulation platform. By adopting the technical scheme of the embodiment of the invention, the tested vehicle in-the-loop test system is constructed to test the head-up display, and the vehicle head-up display function is comprehensively and accurately tested and verified in combination with the real running state of the tested vehicle and the simulated traffic simulation scene.

The invention discloses an optical chip test assembly. The optical chip test assembly comprises a substrate and an optical chip fixed on the substrate, the bearing platform is arranged on the substrate; the metal cover plate covers the optical chip; when a test is carried out, the pressure-bearing table and the metal cover plate bear pressure together, so that the substrate pushes the ejector pin on the PCB test board back, and the substrate is electrically connected with the PCB test board. According to the invention, the pressure bearing platform is arranged on the substrate and is used for bearing the downward pressure, so that the optical chip is protected under the condition of ensuring the successful electric connection with the PCB test board. Meanwhile, the optical chip is also provided with the metal cover plate, and when the optical chip is pressed, the metal cover plate bears pressure at the same time, thereby solving the problem of non-uniform stress.

The utility model discloses an optical module detection system. The optical module detection system comprises a rack, a to-be-detected material loading module, a non-defective product unloading module, an NG product unloading module, a robot loading and unloading module, a lower visual code scanning module, an end detection loading and unloading module, a plugging cleaning module, a high and low temperature tester, an end detector and a test cabinet, through cooperation of the robot loading and unloading module, the to-be-tested material loading module, the non-defective product unloading module, the NG product unloading module, the lower visual code scanning module, the end inspection loading and unloading module, the plugging cleaning module and the high and low temperature tester, efficient transfer of optical modules among the modules is realized, and automatic loading and unloading of the optical modules and automatic plugging of optical fiber heads can be realized. The device is simple in structure, saves time and labor, effectively improves the detection efficiency of the optical module, is controllable in plugging force in the detection process, is high in safety coefficient, and reduces the damage risk of products and equipment.

The invention discloses a method and equipment for detecting a getter of a ring laser based on machine vision, and belongs to the technical field of laser gyroscope detection. According to the method, the thin film image of the getter is collected, the consumption condition of the getter is recognized by combining the color fading property of the getter after the getter reacts with the impurity gas, meanwhile, the getter parameter and the activation parameter of the ring laser are calculated according to the working condition data of the ring laser during standing and working, and the residual gas capacity of the getter is predicted based on the activation parameter. And combining the suction parameters to fit a suction characteristic function of the ring laser, and further predicting the remaining working time of the getter. According to the method, products with unqualified getter allowance can be effectively screened out, and the application reliability of the ring laser in the fields of aviation, spaceflight and the like is improved.

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

The invention discloses an optimization method for vibration performance of an automobile lamp. The optimization method comprises the following steps: S101, establishing a finite element model of the lamp and performing modal analysis; and S102, carrying out a modal test by using the lamp. And S103, comparing a modal analysis result in the step S101 with a modal test result in the step S102, confirming a vibration mode and calibrating the finite element model. And S104, submitting modal calculation according to a calibration result, completing boundary condition setting, and performing random vibration simulation. And S105, carrying out a random vibration test on the lamp by using the PSD power spectrum. And S106, comparing a random vibration simulation result in the step S104 with a random vibration test result in the step S105, confirming the reliability of the model and correcting the finite element model. And S107, determining a dangerous area according to a vibration test result and a vibration simulation result, and checking a risk point optimization data structure. And S108, modifying data according to an optimization result, verifying a random vibration simulation result of the new model, and performing vibration test retest after confirming feasibility.

A platform screen door for rail transit. By means of providing a monitoring sensor (12) and a fault early-warning device (13) for a screen door, real-time operation data of the screen door is acquired, and the real-time operation data is then input into a pre-constructed prediction model; on the basis of the prediction model, multi-round cyclic segmented prediction is performed on the real-time operation data, so as to output an operation prediction result at each time node within a target time period, wherein one piece of segmented-prediction data for the target time period is output by means of each round of prediction, and the obtained segmented-prediction data and the real-time operation data are used as model input data for the next round of prediction; and the operation prediction result is input into a pre-constructed fault monitoring model, and on the basis of the fault monitoring model, a fault type monitoring result at a corresponding time node is output. By means of the technical means, a potential fault type at a corresponding time node can be detected in a timely manner, such that accurate and efficient fault monitoring is realized, thereby improving the reliability and stability of operation of a screen door.

Provided are an optical measurement device, an optical measurement system, and a gamma adjustment method in which a measurement time is shortened.　The optical measurement device measures a light emission characteristic of a specimen, and comprises: a light emission condition acquisition unit that acquires a light emission condition of the specimen from the outside in advance; and a measurement condition setting unit that sets a measurement condition on the basis of the acquired light emission condition.

The invention relates to a method for the mechatronic qualification of the optical system (30) of a semiconductor technology system (1), wherein the optical system (30) comprises at least one optical component (32, 34) that is movable between target positions (46, 52) within a travel range (40), wherein the at least one optical component (32, 34) is moved along at least one possible predetermined travel path (48) between at least two of the target positions (46, 52) and / or wherein the at least one optical component (32, 34) is held at at least one of the target positions (46, 52) in the travel range (40) (holding position), wherein at least one measured value relating to the travel movement is acquired and recorded along the at least one possible predetermined travel path (46) and / or wherein the actual position (54) of the at least one optical component (32, 34) is acquired and compared with the holding position.and in which at least one measurement and / or comparison regarding the presence of at least one defect of the optical system (30) is analyzed.

Illuminance distributions on illuminated surfaces within two or more local angular intervals in the far-field of a measured luminaire are measured by a first imaging measurement device and integrated to obtain full spatial light field information of the measured luminaire. Meanwhile, light-emitting surface images of the measured luminaire in two or more poses are obtained by a second imaging measurement device, so as to obtain more accurate pose information of the luminaire when measured by the first imaging measurement device; ray set information of the measured luminaire is calculated from the light-emitting surface images at all angles, and more spatial light field distribution data is further derived. The system includes a rotatable table for installing the measured luminaire, a diffusing screen, the first imaging measurement device, the second imaging measurement device, and a data transmission and reception control unit.

The invention discloses a hollow-core anti-resonance optical fiber capable of breakpoint detection, a production method thereof and an optical cable, and belongs to the technical field of hollow-core optical fibers, the hollow-core anti-resonance optical fiber comprises an anti-resonance unit coated by a cladding, at least one solid fiber core made of germanium-doped fiber cores is arranged in the cladding, and the solid fiber cores are uniformly and spirally arranged on the periphery of the anti-resonance unit, so that the breakpoint of the hollow-core anti-resonance optical fiber can be detected. Therefore, the hollow-core optical fiber not only meets the application requirement of the anti-resonance effect, but also has the use function of breakpoint detection. The hollow-core anti-resonance optical fiber capable of breakpoint detection is simple in structure and convenient to produce and use, the anti-resonance effect of the hollow-core optical fiber can be met, breakpoint detection of the hollow-core optical fiber can be achieved on the premise that the anti-resonance use performance of the hollow-core optical fiber is not affected, and the service life of the hollow-core optical fiber is prolonged. The application of a conventional breakpoint detection technology (such as an OTDR technology) in the hollow-core optical fiber is effectively realized, the convenience and reliability of application and maintenance of the hollow-core optical fiber are further improved, the comprehensive performance of the hollow-core optical fiber is expanded, and the hollow-core optical fiber has a relatively good practical value.

The invention discloses a device and method for detecting weather resistance of a polaroid for a visual cabin, and relates to the technical field of polaroid detection.The device for detecting the weather resistance of the polaroid for the visual cabin comprises the weather resistance detection device, and the weather resistance detection device comprises a series connection detection device and a high-temperature and high-humidity detection device; the series detection device comprises a radiation detection device, a heating barrel and a first adjusting device, the high-temperature and high-humidity detection device is arranged at the front end of the series detection device, an effective rate improving mechanism and a heating module are arranged in the high-temperature and high-humidity detection device, and a supporting seat is arranged at the upper end of the high-temperature and high-humidity detection device; according to the scheme, the problems that the reliability test period of the polaroid for the visual cabin is long, the manufacturing and quality control efficiency of the polaroid for the visual cabin is low, the product stability is poor, and the test is inconvenient are solved.

The invention discloses a quick-change universal optical adjusting frame device and an optical instrument, and the device comprises a mirror bracket which comprises a mirror bracket body, a sub-mirror bracket, a fixing ring, a first fixing part and a second fixing part. The mirror bracket body is provided with a first stepped hole, and the sub-mirror bracket is provided with a second stepped hole; the second lens is located between the fixing ring and the second step surface of the second step hole, and the fixing ring is detachably arranged in the second step hole and enables the second lens to be tightly pressed on the second step surface during installation; a first fixing hole is formed in the spectacle frame body and is communicated with the first mounting hole; the first fixing piece is arranged in the first fixing hole, and the inner end extends into the first mounting hole for a set length; one end of the second fixing piece is detachably arranged on the mirror bracket body, and the other end of the second fixing piece is pressed on the outer side face of the sub-mirror bracket so that the inner side face of the sub-mirror bracket can be tightly pressed on the first step face of the first step hole. And through the detachable assembly design of the spectacle frame body and the sub-spectacle frame, the function of quickly changing the lenses with different sizes is realized.

The invention relates to an optical system, in particular for microlithography, comprising at least one optical element (100, 200, 300, 400) which has a substrate (105, 205, 305, 405) and at least one optically active layer system (110, 210, 310, 311, 410) located on this substrate (105, 205, 305, 405), and at least one monitoring unit (120, 220, 240, 320, 340) for monitoring a degradation state of this layer system (110, 210, 310, 311, 410), wherein the monitoring unit (120, 220, 240, 320, 340) has a detector (121, 221, 241, 321, 341) for detecting non-directional radiation (130, 230, 330, 430) which is emitted by the optical element (100, 200, 300, 400) during the operation of the optical system.

The utility model relates to the technical field of flexible display screen testing, in particular to a folding testing device for a flexible display screen. The utility model provides a flexible display screen folding test device, which comprises a base, a fixed frame, a protective door, a support table, motors, an overturning plate, a clamping piece, a sector gear and the like, the fixed frame is arranged on the base, the protective door is rotatably arranged on the front side of the fixed frame, the support table is arranged on the front side of the top of the base, and the motors are arranged on the left and right sides of the top of the base. A turnover plate is arranged between output shafts of the motors, clamping pieces are arranged on the top of the turnover plate and the top of the supporting table in a bilateral symmetry mode, the output shafts of the motors are further connected with sector gears, and the bumping testing assembly is arranged on the top of the fixing frame. The motor drives the sector gear to rotate, so that the lifting frame moves up and down, the bumping condition of the flexible display screen is simulated, the durability and performance of the display screen in a dynamic environment can be comprehensively evaluated in combination with the folding test of the turnover plate, and the test accuracy is improved.

The invention discloses an online detection system and method for optical indexes of a hollow-core optical fiber, and relates to the technical field of optical performance detection of optical fibers, and the system comprises an optical fiber connection module, an optical performance detection module, a production linkage module and a data interaction module. The method comprises the following steps: welding the inner end of a production optical fiber with a system at one time; the industrial personal computer reads PLC production data and generates a test trigger condition; when the conditions are met, controlling the OTDR to test the optical indexes of the optical fiber; carrying out segment processing on the OTDR curve by using an improved Viterbi algorithm so as to identify fault features; performing automatic environment compensation based on an attenuation reference model established by the LSTM neural network; and finally, uploading the analysis data to a manufacturing execution system. According to the invention, on-line, real-time and accurate detection of the optical indexes of the hollow-core fiber is realized, traditional multi-time welding is replaced by one-time welding, the detection efficiency is greatly improved, and the problems of poor sealing performance, low efficiency and low data reliability in the prior art are solved.

The invention relates to an optical automatic centering method, aims to solve the technical problems that an existing cross-core positioning method is low in working efficiency and cannot meet the high image quality requirement of optical system testing, and provides an optical testing system with an automatic centering function and an automatic centering method. The method comprises the following steps: presetting parameters of a to-be-detected lens, controlling an electric control turntable to rotate to drive the to-be-detected lens to rotate to two contrast view fields, and performing automatic focus scanning at the two contrast view fields by using a microscopic detection system to obtain image quality parameters or other reference parameters of different image surfaces of the to-be-detected lens at the two contrast view fields; the included angle between the optical axis of the to-be-measured lens and the optical axis of the light source system is calculated, and the included angle is eliminated by rotating the high-precision rotating table, thereby realizing automatic centering.