381 results about "Optical testing" patented technology

The invention relates to the technical field of optical nondestructive testing equipment for the sealing performance of a blueberry bottle opening, in particular to an optical nondestructive testing device and method for the sealing performance of the blueberry bottle opening. According to the technical scheme, the optical nondestructive testing device for the sealing performance of the blueberry bottle opening comprises an optical testing device, mounting grooves, a lead screw, a mounting support, a mounting ring, a Fresnel lens, a micrometer caliper, a double-color laser line light source and a rotating motor, and the mounting grooves are formed in the two sides of the interior of the optical testing device; compared with a traditional optical nondestructive testing device for the sealing performance of the blueberry bottle opening, a single light source or a simple lens group is mostly adopted, a 360-degree annular area of the bottle opening is difficult to cover, illumination on the edge of the bottle opening or a complex curved surface area is insufficient, and tiny defects are prone to being omitted; according to the optical nondestructive testing device for the sealing performance of the blueberry bottle opening, the double-color laser line light source is matched with the Fresnel lens array, multispectral reflection data are synchronously collected, the surface micro-mark contrast is enhanced by utilizing wavelength difference, and the monochromatic light detection sensitivity is effectively improved.

The parallel mechanism comprises a top plate, a base and an upper supporting leg, a partition plate is installed between the top plate and the base, the upper supporting leg is installed between the top plate and the partition plate, and the top of the upper supporting leg is connected with the bottom of the top plate through a flexible spherical hinge. The number of the upper supporting legs is six, every two adjacent upper supporting legs are perpendicular to each other, six lower supporting legs are perpendicularly installed on the top of the base, and the lower supporting legs penetrate through the partition plate and are connected with the upper supporting legs in a one-to-one correspondence mode through hooke joints. The device can realize 0.1-500Hz vibration control, vibration isolation bandwidth and six-degree-of-freedom vibration isolation, has the function of accurate positioning of a parallel mechanism, enables the driving distance of the system to be large through the serial connection of the servo motor and the voice coil motor, and can also be applied to the technical field of equipment for optical testing, measurement, alignment, detection and the like.

According to one embodiment, an optical test apparatus includes a first aperture, a second aperture, an image sensor, and a first lens. The first aperture includes a first aperture plane provided with a first wavelength selecting region. The second aperture includes a second aperture plane provided with a second wavelength selecting region different from the first wavelength selecting region. The image sensor is configured to image a light beam passing through the first aperture plane and the second aperture plane and reaching an imaging plane. The first lens is configured to make a light beam passing through the first aperture plane and the second aperture plane be incident on the imaging plane.

The invention discloses an optical test system and method for measuring the total temperature of a supersonic combustion flow field, and relates to the field of combustion flow field measurement. The system comprises supersonic combustion incoming flow, a time sequence synchronizer, a first laser, a first focusing lens, a first total reflection plane mirror, a second laser, a second focusing lens, a sheet light lens, a second total reflection plane mirror, a computer, an ICCD, a tunable laser diode, a laser controller, a photoelectric detector, an industrial personal computer and a signal monitor. On the basis of a non-contact optical testing technology, the local total temperature is obtained by measuring the speed and the static temperature of the combustion flow field at the same time on the premise that the flow structure and the combustion state of the combustion flow field are not damaged, the structure of the supersonic combustion flow field is not obviously affected, unnecessary oblique shock waves are not caused, and the measurement accuracy is high. And the local and downstream flow and combustion states of the tested combustion flow field are not influenced.

The invention discloses an intelligent temperature monitoring method and system based on an infrared thermometer, and relates to the technical field of optical detection, and the method comprises the steps: S1, obtaining an infrared radiation signal, collected by the infrared thermometer, of a target object; s2, the collected infrared radiation signals are preprocessed, and background noise is removed; s3, adjusting parameters of the infrared thermometer in real time based on the ambient light intensity change; s4, converting the preprocessed infrared radiation signal into a temperature value; s5, comparing the temperature value with a preset temperature threshold value, and giving an alarm according to a comparison result; according to the intelligent temperature monitoring method and system based on the infrared thermometer, the problem of background noise influence caused by optical interference under the condition of large ambient light intensity change in the prior art is solved.

The invention relates to a medium-wave infrared microscopic imaging lens for an optical transfer function measuring instrument, and relates to the technical field of optical testing. The medium-wave infrared microscopic imaging lens is sequentially provided with a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens along a light path propagation direction, and an aperture diaphragm is arranged on the incident plane of the sixth lens. The medium-wave infrared microscopic imaging lens for the optical transfer function measuring instrument is formed by connecting the infinity objective lens with the infinity tube lens, and the lens is suitable for medium-wave microscopic imaging and excellent in imaging performance; tolerance capacity is loose, and processing and adjustment are easy; the testing efficiency is high, the cost is low, and the practical application value is achieved.

The invention relates to the field of dome control, in particular to remote control equipment for a shipborne follow-up dome, which comprises a near-end controller and a far-end controller, the near-end controller is arranged on the same layer of the shipborne follow-up dome and is arranged outside the shipborne follow-up dome, the far-end controller is arranged in an optical measurement equipment control room, and the optical measurement equipment control room is connected with the near-end controller. The near-end controller is communicated with the far-end controller in a network communication mode, and the near-end controller and the far-end controller are respectively communicated with the optical measurement equipment encoder and the dome encoder in a serial port communication mode. According to the shipborne follow-up dome, an operator can complete operation on the shipborne follow-up dome without entering the interior of the shipborne follow-up dome, so that the size of the shipborne follow-up dome can be reduced, and the occupied space of the shipborne follow-up dome is reduced. The operator can use the far-end controller or the near-end controller to operate the shipborne follow-up dome, the operator does not need to run back and forth, the physical strength and time of the operator are saved, and meanwhile the testing efficiency of the optical testing equipment is improved.

The invention relates to the technical field of optical detection, in particular to a focusing control method and system, detection equipment and a storage medium. The focusing control is realized by acquiring the mass center coordinate difference between the light spot corresponding to the real-time detection light beam and the standard light spot / monitoring light spot, determining the defocusing amount of the light spot based on the mass center coordinate difference, determining the oblique incidence angle adjustment amount through the defocusing amount, and adjusting the oblique incidence angle based on the oblique incidence angle adjustment amount. Focusing can be rapidly and accurately achieved, and meanwhile the size and the shape of a light spot can be monitored.

The invention relates to a method for extracting the mass center of a laser spot image based on laser size and gray scale, and relates to the technical field of digital image processing, optical testing and Matlab programming. The method comprises the following steps: step 1, obtaining a fourth grayscale image; 2, processing the generated fourth gray level image, and solving an X coordinate value and a Y coordinate value of the mass center of each image in the test time period; and step 3, obtaining a final centroid coordinate value. According to the method for extracting the mass center of the laser spot image based on the laser size and the gray level, the influence of noise points, stray light and the like on the overall measurement result is reduced to the maximum extent, meanwhile, the numerical image processing process is clear in logic and reasonable in analysis, the actually obtained result meets the expectation, data calculation is simple, and the processing process is efficient and rapid. And adopted data processing software is also universal and common, and is easy to popularize.

The invention relates to a short-wave infrared microscopic imaging lens for an optical transfer function measuring instrument, and relates to the technical field of optical testing. The short-wave infrared microscopic imaging lens comprises a first positive lens, a first negative lens, a second positive lens, a second negative lens, a third positive lens and a third negative lens which are sequentially arranged along a light path propagation direction, an aperture diaphragm is arranged on the incident plane of the first positive lens; the first positive lens and the first negative lens are glued through a first lens gluing surface to form a first lens, the second positive lens and the second negative lens are glued through a second lens gluing surface to form a second lens, and the third positive lens and the third negative lens are glued through a third lens gluing surface to form a third lens. According to the short-wave infrared microscopic imaging lens for the optical transfer function measuring instrument, the imaging performance of short-wave microscopic imaging is excellent; tolerance capacity is loose, and processing and adjustment are easy; the method is high in testing efficiency, low in cost and suitable for practical application.

The imaging lens is characterized in that the imaging lens comprises a first lens group, a second lens group, a diaphragm and a switchable shielding device, the first lens group and the second lens group form a double-Gaussian structure, the diaphragm comprises two diaphragm holes, the circle centers of the two diaphragm holes are located on the diameter of the diaphragm, and the switchable shielding device is arranged on the diaphragm. And the switchable shielding device alternately shields one of the diaphragm holes by taking the circle center of the diaphragm as a symmetric point. The device has the advantages of light and compact structure, flexibility in use, high measurement precision and the like, and can effectively improve the stability and accuracy of a measurement result. Through the advantages of the switchable shielding device, the problem of imaging jitter easily caused by movement of the imaging device in laser speckle dynamic measurement is solved, and the device can be suitable for various optical test scenes such as laser speckle measurement, optical element detection, image sensor calibration, scientific research optical experiments and the like.

The present invention relates to optical coupling between optical components, and more particularly to an optical probe (1) configured for optical testing of at least one micro-optical component (50), a method for manufacturing an optical probe (1), and a method for optical testing of at least one micro-optical component (50). The invention relates to an optical probe (1) comprising:-a probe head (10) wherein the optical properties of the probe head (10) are calibrated and wherein the probe head (10) comprises a test circuit (2) wherein the test circuit (2) is fixed on a mechanical support; -at least one micro-optical element (20), where the micro-optical element (20) is a separate component with respect to the test circuit (2) and is in mechanical contact with the test circuit (2), where the micro-optical element (20) is configured to optically couple light between the test circuit (2) and the micro-optical component (50), thereby being configured to determine an optical performance of the micro-optical component (50).

The invention provides a Faraday sheet performance measurement and polarization imaging system and method, and relates to the technical field of optical testing. The system comprises a light source system, an optical research platform, a polarizer, a first analyzer, a microscopic imaging system and an image acquisition system, the light source system is used for emitting laser; the optical research platform is used for arranging a to-be-measured Faraday sheet and generating a magnetic field; the microscopic imaging system comprises an eyepiece and an objective lens, and the image acquisition system comprises an image acquisition mechanism; in the first propagation direction of the laser, the light source system, the polarizer, the Faraday piece to be measured, the objective lens, the first polarization analyzer, the eyepiece and the image acquisition mechanism are sequentially arranged. According to the Faraday piece performance measurement and polarized light imaging system, the laser polarization state is accurately controlled, the polarization direction change is accurately detected, and the amplification and focusing functions of a microscopic imaging system are combined, so that the accuracy and comprehensiveness of the performance test of the Faraday piece adopting a magneto-optical film are improved, and the test cost is reduced.

The invention provides a high-parallelism test method of an optical comprehensive test platform, relates to the field of active optical testing, and aims to realize parallel testing of multiple tested objects or multiple test items through N independent test channels, avoid waiting time of traditional serial testing, and effectively improve manufacturing efficiency by combining the high-parallelism characteristic of the platform. Dynamic resource scheduling distributes tasks based on channel resource states monitored in real time, resource idling is avoided, the characteristic of high integration of a platform is matched, multiple modules share the platform, cost is effectively shared, the overall utilization rate of equipment is improved, modules such as optical power meters and variable optical attenuators integrated in all channels in a hardware architecture support hot plugging, and the overall performance of the equipment is improved. And the task analysis algorithm can flexibly map test items, adapt to requirements of different tested objects, conform to the advantages that the platform is matched as needed and easy to expand, can protect investment and adapt to dynamic changes of a test scene, and a distributed data acquisition mechanism synchronously acquires data of each channel and provides support for generating a reliable test report.

The invention relates to the technical field of lens module detection, in particular to lens module EOL detection equipment and method, and the equipment comprises a four-station turntable mechanism which is provided with a plurality of bearing test seats for placing lens modules after code scanning; and a plurality of functional modules arranged around the four-station turntable mechanism, wherein the functional modules comprise a surface light test module for optical test, a white field detection assembly, a collimator test module and a black field test assembly. By integrating a multi-station automatic detection process, multiple performance detections such as electrical test, definition, color, signal-to-noise ratio, FOV angle of view, COD decentration, white balance, dark corner, stain and black field of the lens module can be synchronously completed, the coverage of detection items is comprehensive, and compared with traditional equipment only performing white field or black field detection, the full-automatic lens module detection equipment has the advantages that the full-automatic lens module detection equipment is simple in structure and convenient to operate.

The utility model belongs to the field of optical equipment, and particularly relates to an automatic opening and closing device for optical testing, the automatic opening and closing device comprises a shutter device provided with the automatic opening and closing device and a receiving lens, the automatic opening and closing device is arranged on a shutter base through a shutter support, the automatic opening and closing device is provided with a light through hole, and the receiving lens is arranged in the axis direction of the light through hole. The receiving lens is arranged on the lens base through the lens support, the automatic opening and closing device is provided with a shading blade, one end of the shading blade is rotationally connected with the mounting shell, the shading blade shields the light through hole when swinging, and the shading blade swings under the control of the transmission device. By arranging the swinging blades with the magnetic damping devices, swinging of the blades is achieved, so that slits for shading and light passing are automatically formed, and the sizes of the slits are adjusted.

The invention relates to a double-anti-terahertz compact range assembly error compensation method, which comprises the following steps of: assembling a main support structure, and removing assembly stress through high-temperature aging; a main reflector is installed on the main supporting structure, and the main reflector is calibrated; the current position of the main reflector is calibrated to a reference mirror on the side edge of the main reflector, and a test coordinate system is established based on the reference mirror; an auxiliary reflector mounting bottom plate is mounted on the main supporting structure, an auxiliary reflector is mounted on the auxiliary reflector mounting bottom plate, and the auxiliary reflector is calibrated; calculating the offset of the final position of the feed source assembly relative to the theoretical position of the feed source assembly; and with the main reflector as a reference, the position of the feed source assembly is adjusted based on the offset by adopting a high-precision six-degree-of-freedom platform, so that the feed source assembly is located at a final position. According to the invention, the assembly and calibration difficulty of the sub-reflector is effectively reduced, and the final assembly and calibration precision of the terahertz compact range system is equivalent to the test precision of an optical test instrument, namely the highest precision can be achieved.

The invention discloses a rheology-birefringence combined in-situ testing device and method based on chopper rotation frequency signals, belongs to the technical field of optical testing, and aims to solve the technical problems that an existing Spark-FB device is low in measurement accuracy and limits application scenes. The laser emitter emits a light beam along a set angle (forming an angle of 45 degrees with the horizontal plane), the light beam is converted into linearly polarized light through the polarizer, and an optical signal is modulated through the rotating chopper; the modulated light beam penetrates through a polymer sample to which a shear flow field is applied by a commercial rheometer, and transmission light carrying optical anisotropy information of the sample sequentially passes through a 1 / 4 wave plate and a polarization analyzer, and is finally received by a photoelectric detector and transmitted to a lock-in amplifier for analysis. According to the invention, an independent datum reference signal is provided through the chopper, decoupling and combination of a commercial rheometer and a birefringence light path are realized, and synchronous and accurate in-situ measurement of rheological and optical properties of a high polymer material under a deformation condition can be realized.

The invention provides a detonation pressure optical testing device for a micro-dose powdery explosive, which comprises a rotating mirror type scanning camera and an explosive detonation unit, and is characterized in that the rotating mirror type scanning camera is used for collecting a shock wave motion trail image when the powdery explosive is detonated; the explosive detonating unit comprises an organic glass column body and a high-pressure exploder, an explosive charging hole with an open top is formed in the organic glass column body in the axial direction, a stress wave adjusting rod is arranged in the explosive charging hole in a penetrating mode, and the bottom face of the stress wave adjusting rod can make contact with powdery explosives charged into the explosive charging hole; a first detonating hole and a second detonating hole are coaxially formed in the organic glass column body in the radial direction, and both the first detonating hole and the second detonating hole communicate with the charging hole; the heating wire penetrating through the first detonating hole, the charging hole and the second detonating hole can make contact with the powdery explosive in the charging hole, and the two ends of the heating wire are connected with the positive electrode and the negative electrode of the high-pressure exploder correspondingly. According to the invention, a traditional detonation mode is not needed, the interference of the detonator and the explosion expanding explosive on the measurement process of the sample with the small explosive quantity is solved, and the test convenience and the test precision are improved.

Method for producing an optical test element (19) for determining a fit defect of an optical surface (20). The method comprises the following steps: - Determining a CGH design (24) suitable for measuring the optical surface (20), - Generating a CGH auxiliary structure (25) corresponding to the CGH design (24) on an auxiliary substrate (30) using a direct-write lithography process, - Generating an image of the CGH auxiliary structure (25) on a final substrate (40) using a transfer lithography process, - Generating a CGH structure (50) corresponding to the CGH design (24) based on the generated image. The method offers the advantage that the auxiliary substrate can be produced with high precision using a standardized direct-write lithography system, regardless of the size of the optical test element.

The invention discloses a light intensity test method and system of a distribution photometer. The method comprises the following steps: establishing a three-dimensional rectangular coordinate system based on the distribution photometer, and establishing a digital twin model of a light source to be tested based on the three-dimensional rectangular coordinate system; performing region division according to the light source parameter information of the to-be-measured light source to obtain a region division result; detecting the light intensity of each region around the to-be-detected light source in the region division result based on a distribution photometer to obtain the actual light intensity value of each region; based on a region division result, environment parameter information of each region is detected while light intensity detection is carried out on each region, and according to the environment parameter information, a light intensity loss condition caused by environment light intensity detection is analyzed to obtain a light intensity loss amount of each region; and based on a region division result, analyzing errors generated during light intensity detection of each region around the to-be-detected light source during operation of the equipment when light intensity detection is carried out on each region, and obtaining light intensity error values of each region. The method has the effect of improving the light intensity detection accuracy of the distribution photometer.

The invention provides an optical test function high and low temperature test box control system for electronic components, relates to the technical field of optical test, and provides an optical test function high and low temperature test box control system for electronic components through innovative technologies such as a double-target real-time sensing module, core temperature feed-forward compensation, window distortion active compensation, data validity discrimination and adaptive scheduling. The real junction temperature of an electronic component in a high and low temperature test box is highly consistent with the ambient temperature, the wavefront aberration of an observation window is counteracted in real time, abnormal data are automatically discriminated and remeasured, the temperature control precision is improved to + / -0.1 DEG C and the wavefront distortion residual error is reduced to lambda / 20 through dynamic temperature point selection based on gauss process regression and thermal inertia model game, and the temperature control precision is improved to + / -0.1 DEG C and the thermal inertia model game. The test period is shortened by more than 30%, the data misjudgment rate is lower than 1%, and the test precision, fidelity and efficiency are remarkably improved.

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.

The invention discloses a dynamic interference detection device and method based on a generative adversarial neural network. According to the invention, deep learning is integrated into an interference measurement technology, a phase shift interference fringe generator is constructed through a generative adversarial network, an interference fringe set with a specified phase shift amount is obtained, and to-be-measured phase information is obtained through a two-step phase shift phase recovery algorithm. According to the dynamic interference detection device and method based on the generative adversarial neural network, dynamic interference measurement of single-frame fringes is achieved. The device disclosed by the invention has the advantages of high efficiency, simplicity and convenience in operation; the method has the advantages of high measurement precision and strong anti-interference capability, and is suitable for high-precision dynamic optical detection.

The invention discloses a fusion test system and test method of a laser radar component, and relates to the technical field of laser radars, the system comprises a data mobile acquisition platform and a test data analysis terminal; the data mobile acquisition platform comprises optical detection equipment and a signal processing card; the data mobile acquisition platform is connected with the test data analysis terminal; wherein the data mobile acquisition platform is used for being in butt joint with a to-be-tested laser radar component; the optical detection equipment is used for carrying out optical test on the to-be-tested laser radar component to obtain optical test data; the signal processing card is used for carrying out an electrical test on the to-be-tested laser radar component to obtain electrical test data; and the test data analysis terminal is used for performing analysis according to the optical test data and the electrical test data. According to the invention, optical test data and electrical test data are simultaneously acquired through the data mobile acquisition platform, so that the test of the laser radar component is realized.

The invention discloses a performance test device for metal cutting fluid production, which comprises a test workbench, a test turntable and an optical test probe, the test turntable is arranged at the top of the test workbench, and the optical test probe is arranged above the test turntable. The test turntable is used for transferring different metal cutting fluids to the detection end of the optical test probe, and the optical test probe is used for detecting the concentration of nano-scale wear particles in the metal cutting fluids by virtue of a quantum dot luminescence technology. Through the design of a cutting fluid circulating assembly, by means of work of a driving motor, a driving rotating shaft can be driven to rotate, then a turbine is driven to rotate, and when the turbine rotates, cutting fluid in an inner cavity of a cutting fluid circulating bin can be driven to circulate through inner cavities of a downward-extending square pipe, an attaching pipeline, a circulating hose, a pipeline connector and a gooseneck pipe; the environment for using the cutting fluid is conveniently simulated, and meanwhile, the sampling uniformity can be improved by the continuously flowing cutting fluid.

The embodiment of the invention provides an optical test method and device for identifying fly-eye lens defects and a medium. The optical test method for identifying fly's-eye lens defects comprises the following steps: enabling parallel light to pass through a fly's-eye lens to be tested and then to be projected to a lens group; focusing the light emitted by the fly's-eye lens through the lens group, so that the light forms a light spot of the fly's-eye lens on a preset imaging surface; comparing the light spot of the fly-eye lens with a standard light spot; and according to a comparison result, identifying whether the fly's-eye lens has defects or not.

The invention discloses a radiation intensity measurement method of an infrared radiation simulation source system, and belongs to the technical field of infrared radiation characteristic measurement. The method comprises the following steps: firstly, performing radiometric calibration operation on an infrared radiation simulation source system and an infrared detector; a medium-wave infrared optical system and an infrared detector are used for receiving infrared radiation signals, and continuous radiation is converted into alternating signals through modulation of an optical chopper, so that the measurement signal-to-noise ratio is increased. Collected alternating signals are processed by the filtering gain amplification circuit so as to enhance signal stability. And then dynamic denoising and state estimation are carried out on measured data by adopting a Kalman filtering algorithm, and nonlinear error compensation is carried out in combination with a medium-wave infrared radiation coefficient correction algorithm, so that a high-precision radiation intensity correction coefficient is obtained. Compared with a traditional method, the self-adaptive filtering and radiation intensity correction technology is combined, the measurement precision and the real-time performance are improved, and the method can be widely applied to the fields of infrared optical testing, target characteristic analysis and radiation measurement.

The invention relates to the technical field of optical test analysis, in particular to an intelligent water quality monitoring method, system and device based on data analysis, and the method comprises the steps: carrying out the iterative decomposition of original spectral data to obtain a component signal tree, and analyzing the extreme point distribution characteristics of data points in any component signal in the component signal tree; calculating spectral noise factors of the component signals according to the number difference corresponding to the extreme points and the data points among the different component signals; combining the spectral noise factors of all the component signals and the amplitude difference and frequency information in the component signals, performing similarity analysis on the component signals and the original spectral data, obtaining an updated noise coefficient of the original spectral data, denoising the original spectral data, and obtaining a water quality monitoring result of the water body sample by using new spectral data. According to the invention, the denoising effect on the spectral signal is improved, and the accuracy of the water quality monitoring result is further improved.

The present invention provides an optical testing device with a replaceable and adjustable slit, which relates to the technical field of optical instruments, and comprises a box, a mounting sleeve and a slit; the slit is arranged on the mounting sleeve; a mounting plate is arranged in the box, and a mounting window is arranged on the mounting plate; the mounting sleeve is detachably arranged on the mounting window. The present invention is exquisitely designed, easy to promote, more flexible in the debugging process, and has high positioning accuracy.