103 results about "Optical test" patented technology

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.

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.

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 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 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 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.

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 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.

A device (100) for testing an astigmatic optical test object (OBJ) is presented. The device (100) comprises an illumination device (110) with a light source (112), an annular mask element (114), and collimating optics (116). The collimating optics (116) are designed to output light rays from the annular mask element (114) illuminated by the light source (112) as collimated test light (122) to the test object (OBJ). The device (100) also comprises an evaluation device (130) designed to record and evaluate an image (124) generated by the test object (OBJ) in response to the test light (122) in order to determine an axial position of the test object (OBJ) and an optical parameter related to the axial position.

The present disclosure shows a conductor correction module for the continuous or time-discrete detection of properties of a conductor for electrical signal transmission, wherein the conductor correction module has a bidirectional optical interface that can be coupled to at least one optical conductor of the conductor, an optical splitter that has an input interface, a bidirectional test signal interface, and an output interface, and a property measurement unit that is coupled to the output interface of the optical splitter. The bidirectional test signal interface of the optical splitter is coupled to the bidirectional optical interface, and the optical splitter is configured to receive an optical test signal via the input interface and to output a first part of the test signal via the bidirectional test signal interface and a second part of the test signal via the output interface.The bidirectional optical interface is configured to forward the received first part of the test signal into the optical conductor and to receive a reflected optical signal from the optical conductor and forward it to the bidirectional test signal interface. The optical splitter is further configured to output the received reflected optical signal via the output interface, wherein the property measurement unit is configured to determine at least one physical property of the conductor based on the second part of the test signal and the received reflected optical signal. Furthermore, the present disclosure shows a corresponding measurement system.

The present invention includes methods and systems for optical assays, such as optogenetic assays, of biological activity in which an optical reference signal is used to normalize an optical test signal.

The application discloses an optical calibration device and a method for calibrating a coordinate system in which an optical platform is located. The optical calibration device can calibrate the positions of the optical platform and an analyzer in the optical path of the optical platform, so as to ensure the accuracy and stability of optical testing. Compared with the level and high-precision mechanical processing used in the prior art, the optical calibration device can effectively improve the optical measurement accuracy. In addition, the optical calibration device can calibrate the X-axis, Y-axis and Z-axis of the optical platform, and has the characteristics of simplicity and convenience.

The present disclosure shows a conductor correction module for continuous or discrete-time capture of properties of a conductor for electrical signal transmission, wherein the conductor correction module comprises a bidirectional optical interface couplable to at least one optical conductor of the conductor, an optical splitter comprising an input interface, a bidirectional test signal interface, and an output interface, and a property measurement unit coupled to the output interface of the optical splitter. The optical splitter is configured to receive an optical test signal and output a first part of the test signal via the bidirectional test signal interface and a second part of the test signal via the output interface. The optical splitter is further configured to output the received reflected optical signal via the output interface, wherein the property measurement unit determines at least one physical property of the conductor.

The application provides a method for growing WS2 film based on PECVD, and belongs to the technical field of film growth. The application realizes efficient growth of WS2 film by using ionized sulfur source and mixed protective gas Ar, and porous WO3 or WF6 as a precursor. The method steps of the application include: precursor preparation; gas introduction; plasma excitation; film growth; and post-processing. The method can significantly improve the activity of reactants by plasma excitation, so that a faster growth rate can be realized at a similar or even lower temperature. The WS2 film grown by the method has good crystallinity and uniformity, high quality, and is suitable for preparation of high-performance devices, which can be proved by test results such as Raman spectrum, XRD, AFM, and electrical / optical tests.

To provide an optical device capable of illuminating an object by changing the direction of at least a part of a light beam emitted from a light emission part to a light beam in a direction different from the direction of the light beam.SOLUTION: According to an embodiment, an optical device includes a light emission part, a light direction selection part, and an imaging optical element. The light emission part emits a first light beam of a first wavelength spectrum including a first wavelength. The light direction selection section includes a first light direction selection region and a second light direction selection region on a focal plane of the imaging optical element or in the vicinity thereof. A first light beam incident on the first light direction selection region or the second light direction selection region is emitted as a light beam having different optical characteristics depending on the region, and at least one of the regions includes a light direction modifier that modifies a direction of an incident light beam into a different direction and emits the light beam.SELECTED DRAWING: Figure 1

The utility model discloses a kind of optical module test equipment, it is related to optical communication technical field.Optical module test equipment in:first electric test interface is electrically connected with signal transceiver chip;Control chip is electrically connected with optical test device and optical test interface by light testing device;Control chip and signal transceiver chip are electrically connected;Control chip sends first test control signal to signal transceiver chip, and sends second test control signal to optical test device;Optical test device will be converted into second optical signal by first optical signal received through optical test interface, and second optical signal is sent to second to-be-tested optical module by optical test interface;Signal transceiver chip sends test electric signal to first to-be-tested optical module group by first electric test interface;And target electric signal sent by second to-be-tested optical module group is received by first electric test interface.The optical module test equipment provided by the utility model occupies smaller space and area, and failure is easy to troubleshoot, and cost is lower.

The test and measurement system includes one or more remote heads, each configured to be coupled to a respective device under test (DUT) to receive electrical test signals from the DUT, and each of the one or more remote heads includes an electro-optical modulator (EOM) configured to convert the received electrical test signals into optical test signals. An optical interconnect circuit receives the optical test signals from the EOMs of the one or more remote heads and, in response to a control signal, selects one optical test signal from among a plurality of optical test signals to provide to the test and measurement system. The optical interconnect circuit further converts the selected optical test signal into an electrical test signal and provides it to a test port of the test and measurement instrument. A method is also described.

The application belongs to the technical field of optical non-contact measurement, and particularly relates to an optical test test section of a double-layer observation window, which comprises an outer cavity, an inner cavity, an observation window and a blowing device; an outer cavity for cooling airflow circulation is formed between the inner cavity and the outer cavity, and the inner cavity has an inner cavity for high-temperature and high-pressure test airflow circulation; the blowing device comprises a blowing inlet pipe, a fixed wall and a mounting plate; the mounting plate comprises a mounting cylinder and a mounting edge located at one end surface of the mounting cylinder, the mounting edge is sleeved on the inner side of the inner cavity, the fixed wall is mounted between the mounting cylinder and the inner cavity, the fixed wall, the mounting cylinder, the inner cavity and the mounting edge form a blowing cavity, the fixed wall is provided with an air inlet hole, the blowing inlet pipe is connected with the air inlet hole on the fixed wall through the outer cavity and the inner cavity, blowing gas is introduced into the blowing cavity, the mounting edge and the inner wall of the inner cavity form a blowing air gap, and the gas in the blowing cavity is blown to the observation window through the blowing air gap.

The utility model discloses a stage lamp optical testing device, which comprises a testing frame, a first testing plate and a first lifting driving device, the testing frame is provided with a guide rod, the first testing plate is connected with the guide rod, the first lifting driving device is arranged in the testing frame, the first lifting driving device is connected with the first testing plate, and the first testing plate is connected with the first lifting driving device. The first test plate is provided with a first positioning shaft used for positioning the lens disc, and the lens disc is provided with a positioning hole corresponding to the first positioning shaft. According to the utility model, the first lifting driving device is arranged, and the first lifting driving device can drive the first test plate to lift, so that the vertical position of the optical lens can be conveniently adjusted to change the distance between the optical lens and the light source module, and the focusing effect of the optical lens can be conveniently tested; besides, the first testing plate is provided with the first positioning shaft used for positioning the lens disc, so that deviation of the placing position of the lens disc on the first testing plate is well avoided, and the testing result of the optical lens is well guaranteed.