174 results about "Optical test" patented technology

The invention discloses a multi-point out-of-focus lens design optimization method for refractive error and a lens thereof, and relates to the technical field of optical design, and the method comprises the steps: carrying out the multi-refractive simulation optical test of the structure distribution characteristics of a to-be-optimized multi-point out-of-focus lens, obtaining the out-of-focus filling rate, aberration and astigmatism correction effect, then carrying out the partition aggregation, and obtaining the out-of-focus filling rate of the to-be-optimized multi-point out-of-focus lens. Obtaining a deviation area and a deviation characteristic of each diopter; constructing an optimization parameter library; performing compensation target analysis according to the deviation area and the deviation characteristic of each diopter to obtain an optical target parameter; and performing matching search in the optimization parameter library, determining a compensation parameter strategy, and performing structural design optimization on the structural distribution characteristics of the multi-point out-of-focus lens to be optimized. According to the invention, the technical problems of over-correction or insufficiency caused by defocus design unification in the prior art, serious stray light at the connection position of the edge of the multi-point micro lens and the circle of the lens and insufficient processing and assembling precision are solved, and the technical effect of improving the correction precision and visual stability of the lens is achieved.

The invention discloses a full-automatic intelligent multifunctional high-order nonlinear fluorescence dynamics testing method and device, and relates to the field of nonlinear optics and nano photonics. An optical testing device composed of an exciting light generation module, an automatic power regulation module, an exciting light modulation module, a sample scanning module, a data acquisition and analysis module and an intelligent control module is established, and under the excitation of incident laser, based on the overall coordination of the intelligent control module, the optical testing device is established. Other modules are driven to complete the dynamic response test of a nonlinear fluorescence sample, and full-automatic intelligent, multifunctional, high-precision, simple, efficient, low-cost and universal fluorescence dynamic test analysis is realized. The problems that traditional manual operation wastes time and labor and the testing precision is low are solved. In addition, the multifunctional integration of the fluorescence response curve, the fluorescence rise time, the fluorescence lifetime and the fluorescence imaging effectively improves the test efficiency and the application scene, and greatly reduces the system cost.

The invention relates to the technical field of light source testing, and discloses an optical testing method and device based on a wavelength tunable light source, the technical specifications of the light source to be tested are collected to determine key performance distribution characteristics, and environmental interference effect distribution characteristics are obtained by simulating the influence of environmental interference for each key performance node; according to the method, the light source to be tested receives the interference pressure of the test environment through systematic performance analysis and environment simulation, the performance conversion effect characteristic is obtained, a test scheme is formulated by combining the environment interference effect and the performance conversion effect, environment interference and operation parameters are applied to the light source to be tested, and an optical test is carried out to obtain a feedback result. And continuous multiple light source tests with different performance parameters are carried out, so that potential flaws of the light source can be detected with higher precision, and the problem that the test effect of a static measurement method on the dynamic performance of the light source is poor is solved.

A measuring device (10; 110; 210; 310; 410; 510; 610; 710) for the interferometric determination of a property (50; 52) of a shape (50) of a test surface (12) of a test object (14) comprises an irradiation device (22) for generating an input wave (24), a splitting module (18; 118; 318; 418; 518) configured to generate two plane waves (32, 34) with parallel propagation directions, offset from each other transversely to the propagation directions, a wavefront matching module (20; 720) for generating two measurement waves (44, 46) by matching the respective wavefronts of the offset plane waves to a target shape of the optical test surface, and a detector (56) for detecting at least one interferogram (64). which is generated by superimposing the measuring waves (44r, 46r) after their interaction with the test surface.

The invention relates to the technical field of aero-engine tests, in particular to an aero-engine turbine blade cooling effect test optical test structure which comprises optical glass, an outer casing and an optical channel pipe. The optical glass is located on the light-in side of the optical channel pipe, and the light-out side of the optical channel pipe faces the target blade. The outer casing is arranged on the outer side of the optical channel pipe in a sleeving mode, and a cooling channel is formed between the inner wall of the outer casing and the outer wall of the optical channel pipe so as to cool the optical channel pipe; a gas film ring is connected between the optical glass base and the light inlet side of the optical channel pipe in a sealed mode and located on the light outlet side of the optical glass. The optical glass base is provided with the cooling gas inlet, and the gas film ring is provided with the gas jet hole, so that the cooling gas performs jet sweeping on the light emitting surface of the optical glass and enters the optical channel pipe to cool the optical channel pipe, thereby improving the accuracy of the cooling effect test result of the turbine blade.

A microfluidic test system is disclosed. The system includes a test substrate including parallel channels and reaction chambers. The reaction chambers are adapted to accommodate optical transmittance, absorbance and reflectance testing. The movement of the fluid within the system is controlled and synchronized in real time with the optical measurements of the reagents and analytes within each individual reaction chamber. The optical testing of each reaction chamber is customized regarding the color and intensity of the source light. The system includes an easy-to-use applicator for the capture of the test fluid and a fully automated measurement and test system. The microfluidic test system may be incorporated into clothing or apparel such as in a diaper. A device and method are also disclosed.

The invention discloses a constant-volume optical test platform suitable for ammonia-hydrogen stratified combustion and a test method. The test platform comprises an experiment bench; the constant-volume combustion bomb is mounted on the experiment bench, and the interior of the constant-volume combustion bomb is divided into a combustion chamber and two heating chambers by two partition pieces; the ejector mounting seat is arranged at the top of the combustion chamber; the hydrogen ejector is mounted on the ejector mounting seat and is arranged towards the center of the combustion chamber; the two spark plugs are respectively arranged on the two separators and are arranged towards the center of the combustion chamber; the ammonia gas-air channel is arranged on the ejector mounting seat; the two first windows are symmetrically arranged on the two side faces, adjacent to the partition piece, of the combustion chamber. The second window is arranged on the bottom surface of the combustion chamber; the optical system is installed on the experiment bench, and the optical system and the constant volume combustion bomb form an optical path position required by a schlieren method and a direct shooting method; and the control system is electrically connected with the hydrogen ejector, the spark plug and the optical system.

An object of the present disclosure is to make it possible to isolate whether an abnormality has occurred in any one of sections of an optical fiber and a device.The present disclosure provides an optical power feeding system including: a light source that outputs power feeding light to an optical fiber; a plurality of optical nodes connected in series to the optical fiber; and an optical tester that transmits test light from the light source side of the optical fiber toward the plurality of optical nodes and detects reflected light of the test light, in which each optical node includes: a photoelectric conversion element that converts the power feeding light into electricity; a power storage unit that stores electric power converted by the photoelectric conversion element; an optical switch that switches an output destination of the power feeding light propagated through the optical fiber between the photoelectric conversion element included in the optical node and another optical node connected to the optical fiber; a control unit that switches connection of the optical switch in accordance with a control signal superimposed on the power feeding light; and a test light cut filter that reflects, toward the optical tester, the test light output from the optical switch to the photoelectric conversion element.

A measuring device (10; 110; 210; 310; 410; 510; 610; 710) for the interferometric determination of a property (50; 52) of a shape (50) of a test surface (12) of a test object (14) comprises an irradiation device (22) for generating an input wave (24), a splitting module (18; 118; 318; 418; 518) configured to generate two plane waves (32, 34) with parallel propagation directions, offset from each other transversely to the propagation directions, a wavefront matching module (20; 720) for generating two measurement waves (44, 46) by matching the respective wavefronts of the offset plane waves to a target shape of the optical test surface, and a detector (56) for detecting at least one interferogram (64). which is generated by superimposing the measuring waves (44r, 46r) after their interaction with the test surface.

The invention provides an exciting light collimating device, a collimating method thereof and an imaging and optical testing system. Compared with a traditional double-diaphragm collimation method, the exciting light collimation device, the collimation method thereof and the imaging and optical testing system can prevent the variable-temperature sample cavity from shielding the diaphragms, the light beam direction is adjusted through the plane mirror without depending on the diaphragm behind the sample cavity, and the problem that the sample cavity blocks the diaphragm behind the sample cavity is solved. The sample cavity does not need to be moved, so that sample deflection and shaking caused by position change of the sample cavity are avoided, experimental errors are reduced, and the experimental stability is improved. Collimation can be completed by adjusting the plane mirror, a traditional diaphragm adjusting method is simplified, and operation efficiency is improved. And the device is suitable for various experimental environments, such as other optical test systems which have high requirements on light beam collimation but limited space and have any wave band, and has wide applicability.

The invention relates to a projection unit (110) for projecting a test pattern (140). Using the test pattern (140), the sharpness properties of an optical test object (X) can be tested. The projection unit (110) comprises a diffractive optical element shaped to generate a plurality of virtual test objects (142, 143) as the test pattern (140) in response to different excitation light (125, 135) coupled into the projection unit (110) simultaneously from one or more light sources (120, 130). Different of the test objects (142, 143) are arranged in different focal planes and at different solid angles from the perspective of the test object (X).

Optical networks and methods associated with optical networks for verifying network continuity. A method for verifying network continuity includes providing a fiber Bragg grating (FBG) device at a cable associated with a network, wherein the FBG device is configured to reflect a λ1 wavelength; sending an optical test signal into the cable from a location upstream of the FBG device, the optical test signal having a λ1 wavelength; and detecting a reflected signal associated with the λ1 wavelength to verify network connectivity to the FBG device and measure network insertion loss.

The invention provides a CD-ROM integrated light-emitting device detection device and a detection method thereof.The CD-ROM integrated light-emitting device comprises a carrier plate, an LED chip, a driving chip and a plurality of pins, the detection device comprises a workbench, a visual mechanism, a probe mechanism and an integrating sphere, the workbench comprises a transparent bearing plate, and when the CD-ROM integrated light-emitting device is borne on the transparent bearing plate, the LED chip is driven by the probe mechanism to rotate; the LED chip is positioned on one side, close to the transparent bearing plate, of the carrier plate; the visual mechanism is arranged above the transparent bearing plate and is used for acquiring image information; the probe mechanism is used for electrically connecting a probe with a pin in the CD-ROM integrated light-emitting device according to the image information so as to carry out an electrical test on the CD-ROM integrated light-emitting device; the integrating sphere is arranged below the transparent bearing plate and used for receiving emergent light of the LED chip so as to carry out optical testing on the CD-ROM integrated light-emitting device, and the detection equipment and the detection method of the CD-ROM integrated light-emitting device have the advantage of being high in photoelectric testing efficiency.

The present invention relates to an optical coupling module (105) for testing an element (135) to be tested, the optical coupling module (105) comprising a module carrier (107) having a test-signal portion (110) for emitting an optical test signal (125) to a coupling region (130) of the element (135) to be tested or for receiving an optical test signal (125) from the coupling region (130) of the element (135) to be tested, and a camera system (140) fixed to the module carrier (107) for identifying the position of the coupling region (130) of the element (135) to be tested in relation to the module carrier (105).

The approach presented here provides a test device (100) for an optical test specimen (105), wherein the test device (100) comprises a beam source (145) for emitting a beam of light (115) along an optical axis (117). Furthermore, the test device (100) includes an optical element configured as a filter element (125) for imprinting or filtering a specific polarization direction of the light from the beam of light (115) or of light reflected or transmitted by the test specimen (105). The test device (100) also includes a rotation unit (135) configured to rotate the test specimen (105) lying on the optical axis (117) relative to the filter element (125) by an angle of rotation (140).Finally, the test device (100) includes a detector unit (147) configured to determine a polarization axis of the test specimen (105) from the rotation angle (140) and a light beam of the beam (115) reflected by or transmitted through the test specimen (105), as well as a measure of the decentering of the test specimen.

The present application belongs to the technical field of near-field optical testing, and specifically discloses a method and device for obtaining material information based on near-field optical testing, the method comprising: introducing pump light to focus below the needle tip of a near-field optical microscope and introducing detection light to illuminate below the needle tip, wherein a sample to be tested is arranged below the needle tip; under different pump-detection delays, a set of spectra of the sample to be tested is measured by a near-field optical microscope; a set of spectra of the sample to be tested is input into a deep learning model to obtain material information output by the deep learning model. By combining the means of measuring the spectra of the sample to be tested under different pump-detection delays with the means of using a deep learning model for prediction, the present application can ensure the efficiency of the test while ensuring the accuracy of the prediction, and realize the efficient and accurate acquisition of material information of the sample to be tested using near-field optical signals.

The embodiments of the present application are applied to the technical field of optical communications. Provided are an optical test device, an optical transmitter, a test method, and a communication method. The optical test device is used for receiving a first optical signal. The first optical signal comprises an optical signal of at least one channel. At least one pilot signal is carried on an optical signal of each channel, and different pilot signals are carried on optical signals of the corresponding channel having different spectral ranges. The pilot signals have different phases, and the same pilot signal having different phases is carried on different spectral partitions of a corresponding spectral range of an optical signal. The sum of the powers of at least one pilot signal of the same channel is less than a certain threshold. The optical power of an optical signal within a spectral range in which the at least one pilot signal is located is obtained on the basis of the first optical signal. In the present embodiment, the problem of SRS crosstalk in transmission of the pilot signal is avoided when an optical communication performance test is performed on the basis of the pilot signal.

The invention discloses an optical test system and test method for measuring the total temperature of a supersonic flow field, and relates to the field of supersonic flow field measurement, and the optical test system comprises a static temperature measurement system, a speed measurement system and a time schedule controller. The static temperature measuring system is used for generating narrow-band pump light, probe light and broadband Stokes light, converging the narrow-band pump light, the probe light and the broadband Stokes light, emitting the converged light into a measured position of a flow field to generate anti-Stokes light, and acquiring the filtered anti-Stokes light to obtain the static temperature of the measured position; the speed measuring system is used for generating laser, focusing the laser into the flow field, acquiring motion information of the marked substance, and calculating the airflow speed of the measured position based on the motion information of the marked substance; the time schedule controller is used for controlling the static temperature measuring system and the speed measuring system to work synchronously to obtain the static temperature at the measured position and the airflow speed at the measured position at the same moment; the calculation unit is used for calculating the total temperature of the corresponding area of the measured position based on the static temperature of the measured position and the airflow velocity of the measured position; according to the invention, the problems that the flow field structure is invaded and damaged and the invading piece is ablated and invalid under the condition of high total temperature in the current contact measurement can be solved.

The utility model relates to a lamp test technical field, concretely is an aviation obstruction light optical testing device, including the casing, the front end of casing is provided with the light source, the front end of casing still is provided with the transparent baffle of covering light source, and the casing cooperation transparent baffle is fully closed and sets up. The utility model discloses through water pump can drive the heat exchange liquid in the water storage tank to flow in the condenser pipe, the heat exchange liquid in the condenser pipe can carry out heat exchange to the high temperature air in the casing at this moment, can provide suitable environment for light source and PLC circuit board, can avoid light source and PLC circuit board to appear the trouble because of high temperature, can improve the service life of light source and PLC circuit board, and the dust is isolated in the closed casing, can make the heat exchange liquid be fully refrigerated by semiconductor refrigeration piece when the heat exchange liquid backflow, and fan cooperation two air holes can guarantee that the air in the casing circulates and flows in the casing and transparent baffle, can make the cold air after heat exchange in the casing circulate and flow, can guarantee the cooling effect.

The invention relates to the field of photochemistry and electrochemistry. An electrochemical experimental device for spectral measurement comprises a high-voltage direct current power supply, a charging resistor, a charging line, a spark switch, a capacitor, a power distributor, an attenuator, a transmission line I, an oscilloscope, a transmission line II, a bracket, a sample cavity, an optical tester, a thermometer, a semiconductor refrigerator, a heat conduction platform and a constant potentiostat. The sample cavity has a compact structure and balances the requirements of electrochemical experiments and spectral experiments. An electrode with a light reflection function makes the light diffusion path shorter, the light scattering is lower, and the signal-to-noise ratio of the spectrum is improved. The device has a specially designed voltage pulse generating circuit and a compact sample cavity. After the sample is subjected to high voltage treatment, the electrochemical characteristics and spectral characteristics of the sample can be studied at the same time. The high-voltage pulse applied to the sample is regular and stable, and the signal-to-noise ratio of the obtained spectrum is improved. The high-voltage pulse generating circuit is relatively simple, and a high voltage can be applied to the sample to perform spectral and electrochemical measurements.

The invention discloses a device and a method for testing spectral performance of a laser film in a variable vacuum humidity environment, and belongs to the technical field of laser film spectral measurement. The equipment comprises an optical test cavity, a vacuum acquisition and regulation module, a humidity regulation module and a control system, the optical test cavity is butted with a test light path of the spectrophotometer and is used for placing a sample to be tested; the vacuum obtaining and regulating module regulates the vacuum degree in the cavity, the humidity regulating module regulates the humidity in the cavity, and the control system coordinates all the modules to work. According to the invention, by efficiently coupling the variable vacuum humidity test cavity and the spectrophotometer, the in-situ test of the multi-band transmittance of the laser film in different vacuum degrees and different humidity environments is realized, and the problem that the traditional atmospheric environment test cannot truly reflect the performance of the film in a variable vacuum and variable humidity composite environment is solved; and a key technical support is provided for design optimization and reliability evaluation of the laser film.

The utility model relates to the field of optical equipment, in particular to a simple and efficient optical path switching device for multichannel optical testing, which comprises interface boards, a shading baffle, a motor, a Y-shaped optical fiber and an emergent optical fiber interface, the interface boards are provided with a first incident optical fiber interface and a second incident optical fiber interface, and the interface boards are positioned on two sides of the shading baffle. The light shielding baffle is used for shielding the first incident optical fiber interface and the second incident optical fiber interface, one end of the Y-shaped optical fiber is connected into the emergent optical fiber interface, and the device supports various light shielding baffle structures and movement modes, such as a fan-shaped structure matched with a rotating motor and a circular or square structure matched with a linear guide rail and a lead screw motor. According to the design, the device can be flexibly adjusted according to different application scenes and actual requirements, the adaptability and universality of the device are enhanced, the device can manage a plurality of incident optical fiber interfaces at the same time by adding an additional shading baffle, and efficient multi-channel optical testing is achieved.

The utility model relates to the technical field of optometry, in particular to an optometry unit adjusting base. Comprising a mounting shell, a moving frame is arranged above the mounting shell, a rocking handle component is mounted in the moving frame, the moving frame is connected with the mounting shell through the moving component, the rocking handle component comprises a rocking handle hemisphere seat arranged on the moving frame, a hemisphere is arranged in the rocking handle hemisphere seat, a rocker penetrating through the moving frame is arranged at the bottom of the hemisphere, and a sliding block is arranged at the bottom of the rocker; a first grating is fixedly arranged on the outer side of the rocking handle hemisphere seat, a first counting group is arranged on one side of the first grating, the first counting group is connected with the input end of the controller, and the output end of the controller is connected with the motor; a motor is arranged above the movable frame, the output end of the motor is connected with a lead screw, and a nut on the lead screw is fixedly connected with the window instrument. The moving part comprises a first moving support and a second moving support, a first moving shaft is arranged between the first moving support and the second moving support, and a moving block is arranged on the first moving shaft in a sliding mode.

Optical target (20, 20', 20'', 20''') for testing and / or calibrating a medical imaging device (30), comprising: a target body (40, 40', 40'', 40''') that is additively manufactured; and a dispersion element (55) which is incorporated into the target body (40, 40', 40'', 40''').

The present application relates to the field of optical testing and calibration technology, and more particularly to a kind of multiple range measurement device and method of optical fiber device characteristics, to be measured object accesses measurement access detection module, forms circulating test optical path;Low coherence demodulation detection module generates reference light and test light, reference light returns after being scanned by reflection dynamic scanning module spatial optical path, test light enters measurement access detection module after being scanned by the module, and multiple range circulating transmission is completed with to-be-measured object, and the output of test light after transmission returns low coherence demodulation detection module after being scanned by the module again;The module interferes with the received reference light and test light, and obtains measurement result.The present application is tested by multiple range optical fiber ring test structure, integrates commonly used optical fiber and device characteristics, perfects access mode, cooperates calibration correction model, realizes multiple types, multiple parameters, high precision, high reliability and low cost test target.

The aperture aperture calibration and testing system and method provided in this application describe a system where a control module controls an aperture motor via signals. The aperture motor adjusts the aperture mechanism to form the light-transmitting aperture. A camera captures an image of the light-transmitting aperture. The control module processes the image to calculate the actual light-transmitting diameter, and then uses optical formulas to calculate the aperture F-number. This eliminates the need for measurement in imaging instruments or optical test stands, resulting in a small, low-cost system that facilitates rapid deployment and mass production on production lines. The system employs an independent testing architecture, directly driving and testing the aperture mechanism without requiring the assembly of the entire lens, thus improving testing flexibility. The method describes adjusting the aperture aperture with the aperture motor, recording the motor's step count, obtaining the actual light-transmitting diameter through image processing, and calculating the aperture F-number by combining the camera's focal length with the actual light-transmitting diameter, achieving measurement without the need for testing equipment.

The present invention discloses a dual-purpose test device for thermal-optical test and thermal balance test of an optical remote sensing satellite, which includes a satellite support tooling, which is arranged on a load platform and is thermally insulated from the remote sensing satellite; a first radiation metal plate installed at the light incident port of the optical camera; a second radiation metal plate placed parallel to the outer surface of the remote sensing satellite at a distance of 100 mm to 200 mm; a thin film heating sheet arranged on the outer surfaces of the first radiation metal plate and the second radiation metal plate; a rotating link device connected to the first radiation metal plate; and further includes a driving device and a locking mechanism arranged on the mechanism base. The present invention can not affect the field of view of the optical camera when the driving device rotates to 0°, enabling the optical camera to conduct thermal-optical tests in a reasonable vacuum and low-temperature environment; when the driving device rotates to 90°, the radiation plate temperature control and the low-temperature heat sink are reasonably utilized to conduct the thermal balance test of the remote sensing satellite; at the same time, it ensures that the mechanism components will not pose a threat to the safety of the satellite.

The invention discloses a measurement system with an external light front end. A measurement system (10) is described that includes an external light front end (14) connectable to a separately formed measurement instrument (12). The external optical front end (14) includes an optical test interface (16) connectable to a device under test. The external optical front end (14) has an optical coupler module (26) with an optical reference input port (28) for receiving a modulated optical reference signal, at least one optical port (30) for receiving an optical measurement signal, an optical reference output port (32) and an optical measurement output port (34). The external optical front end (14) further comprises an optical RX module (36), wherein the optical RX module is connected to the optical reference output port (32) and the optical measurement output port (34). The optical RX module (36) is configured to convert an optical measurement signal into an electrical measurement signal. The optical RX module (36) is further configured to convert the modulated optical reference signal into a modulated electrical reference signal.

The utility model belongs to the technical field of optical lifting supports, and particularly relates to an optical support for optical testing, which comprises a frame, foot cups are in threaded connection with four corners of the bottom of the frame, a driving motor is fixedly mounted on one side of the frame, a screw is fixedly connected with an output end of the driving motor, and the screw is fixedly connected with an output end of the driving motor. A screw block is connected to the screw rod in a threaded mode, a movable plate is fixedly connected to the screw block, and a guide rail is fixedly connected to the upper portion of the movable plate. According to the utility model, the plane position of the optical camera can be accurately adjusted through the driving motor, the screw rod, the screw block and other structures, the problem of inaccurate traditional manual adjustment is solved, the sliding block is matched with the sliding rod, and the guide rail is matched with the movable seat, so that the movement stability is ensured, the requirement of high-precision test on equipment stability is met, and the foot cup can adjust the stability of the bracket; the supporting rod is flexible in installation direction, adapts to different testing scenes, improves the precision, convenience and efficiency of optical testing, and effectively fills the blank in the prior art.

The invention belongs to the technical field of converter valve testing, and discloses a testing system and method for a converter valve thyristor control unit board card, a main control module analyzes a testing requirement and generates a control instruction, a to-be-tested board card is connected through a multi-type interface adaptation module, a signal simulation unit outputs electric and optical testing excitation signals, and the to-be-tested board card is connected with a thyristor control unit. The data acquisition unit captures a feedback signal and returns the feedback signal to the master control unit, and external data synchronization and result output are realized in combination with the communication interaction module; according to the test system, the space occupation is obviously optimized, and the multi-device cooperation requirement is eliminated; manual voltage regulation operation is replaced by full-automatic signal control, so that the safety risk is reduced; a flexible and programmable excitation signal generation and acquisition mechanism supports rapid parameter adaptation; automatic data acquisition and processing completely eradicate personal errors, and human input is reduced; the highly integrated system architecture realizes automatic propulsion of the whole test process and report generation, and greatly improves the test efficiency and reliability.