112 results about "Optical table" patented technology

The invention discloses a straight gear shape-free measurement method based on single-group line structured light. The method comprises the following steps: constructing an optical platform coordinate system, carrying out line structured light coordinate system calibration through a spherical calibration body, and calibrating the rotation center of a precision turntable; installing a measured straight gear, establishing a straight gear coordinate system, and adjusting the position of the linear structure optical measuring head, so that the measuring field of view of the linear structure optical measuring head covers a root circle to an addendum circle of the straight gear; the straight gear is installed on a precision rotary table, the straight gear is driven to rotate at a constant speed, a linear structure optical probe scans and collects straight gear contour point cloud data and circular grating angle information, and tooth surface three-dimensional point cloud data is obtained; based on the three-dimensional point cloud data of the tooth surface, extracting an addendum circle, a dedendum circle and an involute tooth profile, and calculating spur gear parameters; performing reverse three-dimensional shape modification tooth surface identification on the shape modification straight gear to generate a three-dimensional deviation diagram; and outputting a measurement result and printing a report. The problems of shape-free rapid measurement, modification tooth surface identification and tooth surface three-dimensional deviation characterization of the straight gear with unknown basic parameters are solved.

The invention discloses an optical thermostat with comprehensive vibration reduction and low-temperature in-situ displacement functions, which adopts upper and lower opposite vibration absorbers and a large-mass base to realize first-order to second-order inertial vibration absorption, and further realizes thorough decoupling with an optical platform in a suspension type non-contact manner, and the vibration transmissibility can be reduced to be less than 10%. Resonant frequencies of two systems (a sample table system and a cold head system) are designed to achieve vibration decoupling. The technical problems that in the prior art, the high-grade vibration isolation capacity is insufficient, refrigerator noise is easily coupled to a measuring light path, the low-temperature in-situ precision displacement capacity is lacked, and the contradiction between heat isolation, convenience and cost is difficult to balance can be solved. Under the support of a conventional GM refrigerator, the comprehensive requirements of ultralow basic vibration, strong decoupling of a measurement light path, low-temperature in-situ micron-sized displacement, convenient sample replacement and efficient refrigeration / thermal control are met at the same time.

The invention relates to an aperiodic disturbance control vibration grid turbulence generation device, which comprises a vibration grid device and a flow field observation device, and is characterized in that the vibration grid device comprises a water tank frame, a water tank, a linear slide rail, a linear module, a vibration grid, a motor and a control system PLC module; the flow field observation device comprises an optical platform, an auxiliary LED lamp and a particle image velocity measurement system, wherein the particle image velocity measurement system comprises a high-speed camera, a laser and a computer. According to the invention, isotropic turbulence in a complex mode can be simulated, and the application range of equipment is expanded. According to the invention, the limitation of a vibration grating device based on periodic disturbance control is overcome, and a more flexible experiment platform is provided for turbulence mechanism research and application of the turbulence mechanism in the fields of material transportation, diffusion, sedimentation, flocculation and the like.

The invention relates to the technical field of infrared temperature measurement, and particularly discloses an infrared radiation temperature measurement system based on a point detector, which is used for solving the problems that in a 200-1200 DEG C heating furnace, infrared temperature measurement of an existing point detector cannot dynamically select a point detector and a filtering wave band along with the state of a hearth, accurate measurement, quick response and long-term calibration of a wide temperature region are difficult to meet at the same time, and the accuracy of temperature measurement is low. The device comprises an optical platform, an optical path switching unit is arranged on the optical platform, the optical path switching unit is connected with a plurality of optical inlets, the optical inlets are converged to a main optical axis, and a dynamic narrow-band filter and a point detector selection module are sequentially arranged on the main optical axis; through adaptive selection of the dynamic filtering wave band and the point detector, multi-spectrum fusion inversion and an online self-calibration mechanism, the temperature measurement error and drift are reduced under the conditions of wide temperature range, high flue gas interference and long-term continuous operation, and the precision, response speed and reliability of temperature measurement of the heating furnace are improved.

The invention provides a terahertz frequency comb generation verification method and system based on an optical fiber microcavity optical frequency comb, and the method comprises the steps: injecting a continuous wave laser into an optical fiber microcavity resonator to generate a stable Kerr optical frequency comb, enabling the Kerr optical frequency comb to work in a single soliton state or a soliton crystal state, and obtaining an optical frequency reference with low phase noise. Furthermore, spectrum selection is performed on the optical frequency comb, multiple groups of optical comb tooth pairs comprising comb teeth of different orders are actively selected, and the optical frequency difference of each group of comb tooth pairs is directly converted into an electric signal in a terahertz frequency band by utilizing a beat frequency effect of a photoelectric detector. A plurality of terahertz electric signals generated by different comb tooth pairs are integrated to form a multi-channel terahertz frequency comb. The method allows a plurality of discrete and frequency-controllable terahertz signal channels to be generated in parallel on a single optical platform through one-time optical processing and photoelectric conversion, so that multichannel terahertz frequency comb generation is realized.

The invention relates to an aerosol particle scattering characteristic experimental platform and experimental method based on a Pockels effect, and belongs to the technical field of optical measurement. The experimental platform comprises an optical platform, an aerosol particle transport system, an optical path system and a data processing system, the aerosol particle conveying system comprises a combustion chamber, a dust aerosol generator, a water mist aerosol generator, a pipeline and an aerosol jet hole; the combustion chamber, the dust aerosol generator and the water mist aerosol generator are all placed outside a room where the optical platform is located, and the light path system is placed on the indoor optical platform; all parts of the data processing system are placed inside or on the top of the cabinet, and the cabinet is close to the optical platform. According to the aerosol particle scattering characteristic experiment platform based on the Pockels effect, the electro-optical modulator based on the Pockels effect and the phase-locked demodulation technology are used, the Mueller matrix measurement time can be shortened, and the measurement precision is improved.

The invention relates to the technical field of forensic examination, and discloses a forensic diatom automatic scanning and interpretation system based on optical microscopic imaging and AI, which comprises an automatic scanning imaging optical platform, an embedded high-performance all-in-one computer and an artificial intelligence recognition algorithm module. The all-in-one computer is configured to control the optical platform to execute XY-axis automatic scanning and Z-axis automatic focusing, and the automatic focusing is realized based on a definition evaluation function and a search algorithm to obtain a clear field-of-view image; and the artificial intelligence recognition algorithm module is configured to call a diatom target detection model and a diatom form classification model to carry out automatic detection and morphological classification on diatom targets in the clear view field image, and can also comprise an online learning and image library expansion mechanism. The problems that forensic diatom inspection depends on manpower, efficiency is low, interpretation is subjective, and an automatic system lacks accurate focusing and self-adaptive capacity are solved.

The invention provides an automatic coupling device for a fast-axis beam of a micro-channel laser stack array, and relates to the technical field of semiconductor lasers. The device comprises an optical platform, and the optical platform is provided with a stack array adjusting subassembly, a power-up subassembly, a UV curing subassembly, a lens adjusting subassembly, a dispensing subassembly, a near-field detection subassembly and a far-field detection subassembly. The stack array adjusting part is used for installing the stack array, and the power-up part is used for powering up the stack array. And the UV curing subassembly is used for curing the ultraviolet glue. And the lens adjusting subassembly and the dispensing subassembly are respectively used for adjusting the position of the fast axis collimating lens and dispensing. The SAC lens is arranged on a sliding plate of the dispensing subassembly through a fixing rod, during coupling, laser emitted by the micro-channel laser sequentially passes through the fast axis collimating lens and the SAC lens and then is divided into a far-field light beam and a near-field light beam by the beam splitter prism, the near-field light beam enters the near-field detection subassembly, and the far-field light beam enters the far-field detection subassembly. The device effectively solves the problems of low production efficiency, poor coupling precision and the like in the existing coupling mode.

This invention relates to a detector support structure, specifically a space payload detector support structure and installation method that combines vibration isolation and heat dissipation. It primarily addresses the technical problem that existing detector support structures cannot simultaneously solve the vibration isolation and heat dissipation issues of space payload detectors. The structure includes a heat sink, a flexible heat-conducting cable, a heat-conducting plate, and a bracket. The heat sink is connected to the temperature control surface of the external space payload. One end of the flexible heat-conducting cable is connected to the heat sink, and the other end is connected to the heat-conducting plate. The heat-conducting plate has a glue injection groove, a temperature probe mounting groove, and a fixing hole on its end face. The detector circuit board and the detector body are respectively disposed on the upper and lower end faces of the heat-conducting plate, and the detector pins are connected to corresponding holes on the detector circuit board. The temperature probe is installed in the temperature probe mounting hole. The bracket is connected to both the detector circuit board and the external optical platform. This detector support structure effectively combines vibration isolation and heat dissipation.

The invention relates to a mobile laser scanning microscope (100) comprising: a chassis (10) with rollers (12), an optical table (30) connected to the chassis (10) via a vibration damper (20), an upper optical box (40) containing a scanning head (42) with acousto-optical deflectors, a pillar (60) connecting the upper optical box (40) to the optical table (30) and holding it at a distance above therefrom, a stage (31) arranged on the optical table (30), a microscope module (32) arranged above the stage (31) and comprising a microscope objective (33) optically coupled to the scanning head (42) and at least one detector (75a, 75b), at least one laser (35) arranged on the optical table (30), an optical beam path (36) guiding a beam of the at least one laser (35) from the at least one laser (35) through the upper optical box (40) to the objective (33), compartments (17) connected to the chassis (10) below the optical table (30) and housing power supplies (15) and control systems (16) of the microscope (100), and a light barrier system (50) having a cover (52) covering units arranged on the optical table (30).

The invention belongs to the field of water lubricated bearings, and discloses a magnetic-water composite bearing test bed capable of reconstructing a magnetic steel array, which comprises a precise optical platform, and a driving transmission assembly, a multi-dimensional load loading assembly and a tested magnetic-water composite bearing assembly which are fixedly arranged on the precise optical platform, the driving transmission assembly and the to-be-tested magnetic-water composite bearing assembly are sequentially arranged along the same horizontal axis, the output end of the driving transmission assembly is connected with the middle diaphragm coupling through a flat key in a matched mode, and the middle diaphragm coupling is connected with a tail shaft of the to-be-tested magnetic-water composite bearing assembly through a flat key in a matched mode. The multi-dimensional load loading assembly is arranged right above the tested magnetic-water composite bearing assembly in spatial arrangement, and the loading output end of the multi-dimensional load loading assembly is connected with an upper section stator of the tested magnetic-water composite bearing assembly through a servo electric cylinder connecting plate. The method has the following advantages: dual reconstruction of the magnetic circuit topology and the microscopic air gap is realized; the loading mode is real, and working condition simulation is accurate; dismounting and maintenance are convenient and experiment efficiency is high.

The application discloses a kind of laser semi-active seeker testing system and method, system includes: optical platform, laser target simulation unit, seeker fixed seat, three-axis turntable and stepper motor etc.Modular.The laser target simulation unit is used to simulate the real echo signal generated after laser irradiation to target;The seeker fixed seat is installed on three-axis turntable, three-axis turntable is installed on optical platform and is driven by stepper motor.Laser target simulation unit, laser semi-active seeker and stepper motor are respectively connected with host computer communication.The application is applicable to miniature laser semi-active seeker, and can test the working distance, field angle, responsivity and multiple performance parameters of miniature laser semi-active seeker synchronously.

The application discloses the technical field of optical platform, and particularly provides an optical platform with good vibration isolation effect, which comprises an optical platform body, a vibration isolation device and a load-bearing damping device, the optical platform body is supported and connected through the vibration isolation device and the load-bearing damping device, and the optical platform body can stably place optical equipment, the vibration isolation device is arranged around the bottom of the optical platform body, and the vibration isolation device can isolate vibration of the four corners of the bottom of the optical platform body, the application can isolate the vertical vibration direction of the placing platform, increase the vertical vibration isolation capacity of the placing platform, and isolate the side of the placing platform and increase the damping capacity of the side of the placing platform.

The application is directed to a locking adjustment assembly for an optical aiming device. The locking adjustment assembly is usable across different optical platforms regardless of the focal length of a particular optical platform. The locking adjustment assembly is operationally configured to be reset to a zero position. The locking adjustment assembly may also provide an automatic lock at a zero position.

The utility model discloses an optical element surface detection equipment, including optical platform, X axis linear displacement module, optical element bearing platform, optical element surface detection unit, be equipped with the protection cover of the X axis linear displacement module, optical element bearing platform, optical element surface detection unit cover in its inside on optical platform, optical element bearing platform includes the servo turntable of being located on the sliding platform of X axis linear displacement module, is located on the turntable of servo turntable's deflection platform, optical element surface detection unit is arranged in the outside of X axis linear displacement module close to the middle position, and the detection head of optical element surface detection unit is perpendicular to the X axis linear displacement module, and the bottom of optical element surface detection unit is equipped with Y axis linear displacement module, and Y axis linear displacement module bottom is equipped with Z axis linear displacement module, and the bottom fixed connection of Z axis linear displacement module is on optical platform, and this scheme is favorable to reduce the influence of vibration factor and improve the accuracy of detection.

The application provides a time delay interferometric ground semi-physical experimental verification scheme, which comprises the following steps: (1) based on a space gravitational wave detection task and a load configuration scheme, acquiring a space gravitational wave detection task core measurement, and recording measurement data; (2) constructing an algebraic relationship of a time delay interferometric scheme capable of effectively eliminating laser frequency noise and secondary noise such as optical platform jitter, and calculating a first generation time delay interference and a first generation basic combination solution according to the algebraic relationship; (3) repeating the above step (2) for multiple rounds, compensating for the difference of the equivalent interference measurement arm length, and further suppressing laser frequency noise. The application has reasonable concept, and a semi-physical simulation platform of an equivalent million kilometer arm length unequal arm Michelson interferometer is built by combining a lock arm frequency stabilization system and an electronic phase delay system, so that effective suppression of laser frequency noise is realized.

This invention discloses a shape-free measurement method for spur gears based on a single set of line structured light. The method includes: constructing an optical platform coordinate system; calibrating the line structured light coordinate system using a spherical calibration body; calibrating the rotation center of a precision turntable; installing the spur gear under test and establishing its coordinate system; adjusting the position of the line structured light probe so that its measurement field of view covers the spur gear from the root circle to the addendum circle; mounting the spur gear on the precision turntable and driving it to rotate at a uniform speed; the line structured light probe scanning and acquiring the spur gear contour point cloud data and circular grating angle information to obtain three-dimensional point cloud data of the tooth surface; based on the three-dimensional point cloud data of the tooth surface, extracting the addendum circle, root circle, and involute tooth profile, and calculating the spur gear parameters; performing reverse three-dimensional tooth surface identification on the modified spur gear to generate a three-dimensional deviation map; outputting the measurement results and printing a report. This invention solves the problems of rapid shape-free measurement of spur gears with unknown basic parameters, tooth surface identification of modified gears, and three-dimensional deviation characterization of the tooth surface.

This utility model relates to a thermal resistance testing system for electronic packaged devices, including an optical platform with a stage on the platform. An adjustable probe assembly, an imaging system, and a fixing mechanism are arranged around the stage. The adjustable probe assembly consists of a position adjustment mechanism and probe stages. The position adjustment mechanism includes symmetrically arranged longitudinal slide rails, a transverse guide plate sliding on the longitudinal slide rails, and a transverse slide plate sliding on the transverse guide plate. Two sets of probe stages are mounted on the transverse slide plate. The imaging system includes a microscope adjustment frame, on which a CCD camera assembly and a display screen are mounted. This utility model enables circuit connections for electronic packaged devices of different packaging forms and sizes, especially for electronic packaged devices with a small number of pins, avoiding multiple soldering of the device pins and improving both testing efficiency and thermal resistance testing efficiency.

The invention provides a fluid-solid coupling experiment system for a vortex ring and a flexible body, and relates to the technical field of fluid-solid coupling experiments.The fluid-solid coupling experiment system for the vortex ring and the flexible body comprises an experiment cabin module and a push type vortex ring generation module, and the experiment cabin module comprises an experiment cabin body, a laser mechanism, the flexible body and a particle generator; the flexible body is hung in the middle of the experiment module body, the laser mechanisms are arranged on the two sides of the flexible body respectively, the particle generator is arranged outside the experiment module body, the output end of the particle generator is communicated with the interior of the experiment module body, and the push type vortex ring generation module is arranged on one side of the experiment module body. The propelling type vortex ring generation module is used for generating a vortex ring facing the flexible body in the experiment cabin body, and the experiment cabin body module and the propelling type vortex ring generation module are used for being arranged on an optical platform. According to the invention, the accuracy of the fluid-solid coupling experiment of the vortex ring and the flexible body can be effectively improved.

The application provides a combined bottom plate structure of a laser, which is a multi-layer plate integrated structure fixedly connected to the bottom of the inner cavity of the laser, comprising a support plate, a semiconductor refrigerator, a heat insulation pad, a base plate and a mounting plate; the bottom surface of the support plate is fixedly connected to the bottom of the inner cavity of the laser shell; the semiconductor refrigerator and the heat insulation pad form a first square body structure, the bottom surface of the first square body structure is connected to the top surface of the support plate; the mounting plate and the base plate form a second square body structure; the bottom surface of the second square body structure is connected to the top surface of the first square body structure, and the top surface of the second square body structure is an optical platform for bearing a plurality of optical components and absorbing heat. The application also provides a heat dissipation method for the combined bottom plate structure of the laser. The application solves the technical problem that the bottom plate structure of the existing laser cannot simultaneously meet the requirements of high-efficiency heat dissipation, accurate temperature control and stable structure due to the single material.

The application discloses a kind of circulating light path atomic cell structures based on optical super surface, including atomic cell, atomic cell includes cell wall and chamber, chamber is vacuum environment, and chamber is filled with alkali metal atom vapor;The first optical super surface structure and the second optical super surface structure with the same structure are symmetrically arranged on the two sides of the chamber;Atomic cell is provided with probe light input interface and coupled light input interface respectively on two sides;The inside of cell wall is provided with probe light path;Probe light input interface is coaxially arranged with chamber;The application provides an integrated atomic cell structure, reduces the number of optical devices of electric field measurement system, reduces the influence of environmental factors on measurement, improves the portability and practicality of the measurement based on Rydberg atom electric field.The application does not depend on optical platform and does not contain metal element, and the measured electric field will not be distorted, which can be directly used as an electric field measurement probe in the measured electric field.

The present application relates to the technical field of high-voltage discharge plasma, and provides a high-voltage discharge plasma element detection device, which comprises an optical platform, a discharge reaction unit, an electrical diagnosis unit and an optical diagnosis unit; the discharge reaction unit, a fiber displacement stage and an ICCD displacement stage are installed on the optical platform; the discharge reaction unit comprises a sample carrier, a supporting component, a ground electrode and a high-voltage electrode; the sample carrier is arranged on the supporting component, and the center of the sample carrier is provided with a small hole; the ground electrode is installed at the root of the optical platform and is grounded, and the needle tip of the ground electrode faces the center of the sample carrier; the high-voltage electrode is arranged above the small hole of the sample carrier, and a plurality of groups of radiating fins are installed on the high-voltage electrode; the discharge reaction unit is connected in series with a parameter adjustment dark box, and the parameter adjustment dark box is connected with a high-voltage alternating current power supply; and the present application can realize accurate regulation and control of the discharge mode and detection of metal elements in solids.

The invention provides an intelligent vamp side edge recognition and line drawing device and method.The intelligent vamp side edge recognition and line drawing device comprises a high-precision linear module, a laser scanner, a V-shaped stop block, a pneumatic gripper, a control and data acquisition unit and an industrial robot which are all arranged on a vibration-resistant optical platform; the high-precision linear module is used for controlling a shoe body to move at a constant speed, the laser scanners are arranged on the two sides of the high-precision linear module, the pneumatic gripper and the V-shaped baffle are installed above the high-precision linear module, and each laser scanner comprises a line laser camera and a line laser base. And the control and data acquisition unit is connected with the vibration-resistant optical platform, controls the shoe body to move at a constant speed, performs line laser scanning, receives the point cloud number, processes the point cloud data by using a self-adaptive growth algorithm and a fracture filling algorithm to obtain a vamp side closed curve, and controls the industrial robot to trace lines on the vamp side. The shoe body line drawing precision and efficiency are improved, the shoe body line drawing device can be suitable for curved surfaces and lines of various shoe types, the requirement for mass production is met, and the line drawing path continuity and smoothness are guaranteed.

The application relates to a teaching laser speckle interferometry experimental device for measuring material micro-morphology, belonging to the technical field of real-time diagnosis of material morphology of a tokamak wall. The device comprises a laser, a beam expander, a collimating mirror, a sample holder, two groups of beam splitters, a piezoelectric phase-shifting mirror, an imaging lens, a CCD camera and an optical platform. The device has a simple structure, the sensitivity can be dynamically expanded and selected according to actual detection conditions, and speckle interference fringes are obtained by subtracting the intensity field distribution functions before and after the surface displacement or deformation of the measured object. Compared with traditional morphology detection methods, physical contact with the measured object is reduced, thereby avoiding secondary deformation of the measured object and causing system errors.

The utility model discloses a holographic light booth structure, including support assembly, the sliding partition board assembly of multiple groups of sliding setting in the side wall of support assembly edge department and the upper seal plate of lap joint in the top of support assembly, support assembly includes at least six support beams that are along Y axle and are in rectangularly closed setting on optical platform, the first splicing beam of multiple roots that lap joint in the top and bottom of six support beams respectively along X axle and the second splicing beam of multiple roots that lap joint in the top and bottom of six support beams respectively along Z axle, and can be based on optical platform construction initial support assembly to realize the package of optical platform to support beam, first splicing beam and third splicing beam, after based on the assembly sliding partition board assembly of support assembly edge department, and set up the upper seal plate on the top, and finally form the rectangular fairing of erection on the optical platform surface, realize the closed light path, avoid the influence of air current disturbance to the process result, improved the stability of holographic grating in exposure operation.

The invention discloses a desktop type installation and adjustment platform for an extreme ultraviolet coaxial optical system and a method of the desktop type installation and adjustment platform, and belongs to the field of optical system precision installation and adjustment devices.The installation and adjustment platform comprises a photoelectric auto-collimator, an electric rotary table, an image acquisition module, a light source and a lens set adjustment mechanism, and the optical axis of the photoelectric auto-collimator coincides with the rotating shaft of the electric rotary table; the optical platform is fixed on the base and serves as a reference axis of the adjustment platform, the electric rotary table is fixed on the optical platform, the plane reflector is fixed on the surface of the electric rotary table, the photoelectric auto-collimator is arranged on one side of the plane reflector, and the image acquisition module is arranged between the plane reflector and the photoelectric auto-collimator. The traditional installation and adjustment scheme is limited in applicable optical system and lacks flexibility and integration, but the installation and adjustment platform is an independent system with complete functions, integrates optical path calibration, attitude regulation and control and image analysis units, does not need external auxiliary equipment, can be flexibly arranged according to the relation between the aperture and the object image of the optical system to be installed and adjusted, and is convenient to install and adjust. And rapid adaptive precision adjustment is realized.

The invention discloses an arbitrary-angle drawing and loading device in a transparent soil pile foundation model test. The arbitrary-angle drawing and loading device comprises an optical platform, a model groove, a model pile, a multi-angle loading reaction frame, a guide rail, a pulley block A, a pulley block B, a vertical upward-pulling device and a cable. The model groove is fixed to the optical platform, transparent soil is laid in the model groove, and a model pile is pre-buried in the transparent soil. And the multi-angle loading reaction frame is a U-shaped reaction frame, is fixed on the optical platform and is positioned right above the model groove, and two guide rails are arranged on the multi-angle loading reaction frame in parallel. The pulley block A and the pulley block B are arranged between the two guide rails and installed on the guide rails in a sliding mode through connecting assemblies. One end of the cable is connected with the vertical up-pulling device, and the other end of the cable is wound on the pulley block A and the pulley block B in sequence and extends out of the pulley block B to be connected with the model pile. According to the invention, the vertically upward pulling force provided by the external actuator is converted into pulling forces at different angles, so that the multi-angle oblique loading of the pile foundation is realized, and the model test cost is greatly saved.

The application provides a selection method and a selection system of a laser pump source, and relates to the technical field of lasers. The selection method of the laser pump source can include providing a test platform; connecting the pump sources with different coating layers in a preset order to the fusion points of the optical platform in sequence. The optical power output by the optical platform after fusing the pump sources and / or the temperature at the fusion points in the optical platform are obtained. The target pump source is obtained according to the optical power or the temperature. The selection method can solve the problems of light leakage and hot spots at the fusion points caused by the coating layer of the pump source in the fiber laser, and improve the performance and stability of the fiber laser. The selection method is simple, easy to operate and implement, has high reliability, is low in cost, and is easy to popularize and apply.