365 results about "Optical table" patented technology

The invention relates to the technical field of quantum sensing and ocean detection, and discloses an ocean magnetic field sensor based on an NV color center and an ocean magnetic field measuring method.The sensor comprises a cylindrical pressure-resistant cabin, an optical platform arranged in the pressure-resistant cabin and a main control panel; a laser, a beam shaping unit, a dichroscope, a beam shaping lens group, an objective lens, a diamond NV color center chip, a plano-convex lens I, a band-pass filter and a photoelectric detector are mounted on the optical platform; two microstrip loop antennas are mounted on the outer side of the diamond NV color center chip; an FPGA + ARM dual-core processor, a digital lock-in amplifier and two microwave signal generators are installed on the main control board, and the microwave signal generators are connected with the microstrip loop antenna and achieve electromagnetic coupling with the diamond NV color center chip. The invention has the advantages of high sensitivity, good long-term stability and strong anti-interference capability, and provides a new generation of quantum sensing solution for applications such as ocean geomagnetic monitoring and underwater target identification.

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 a method for processing the marking depth problem of laser marking equipment. The method comprises the steps of optimizing an optical system design, constructing an automatic equipment calibration process, strengthening the environmental adaptability of the equipment, optimizing a control algorithm to be matched with an industrial application scene, processing the problem of inconsistent marking depth, monitoring and adjusting the direction and path of a laser beam in real time and the like. A flat-topped beam converter, an aspherical lens, a temperature-controllable optical platform and other optimized optical systems are combined with a high-precision camera, a sensor, an algorithm and the like to realize real-time monitoring and dynamic adjustment of a reflector angle, a laser track, environmental parameters, a marking path, power and the like, so that the laser marking depth is consistent, the direction is accurate, the path is not inclined, and the laser marking quality is improved. The machining precision and stability of the laser marking equipment are improved, and the laser marking equipment is suitable for different materials and process requirements.

Disclosed are a strengthening device and method for improving fatigue, wear and corrosion performance of metals. In the present disclosure, a femtosecond laser device, an optical transmission module, an optical platform, a five-axis mobile platform, a femtosecond laser processing head, and a central processing unit are included, where laser scanning processing is completed by means of the synergy of the five-axis mobile platform and a scanning galvanometer. A femtosecond laser processing process method for regulating and controlling shock wave pressure and surface self-organizing structure characteristics is proposed by the present disclosure, where a work-hardening layer and a wear-resistant and hydrophobic micro-nano structure are prepared on a surface of the metal in one step by means of the femtosecond laser, and simultaneous improvement of the fatigue, wear and corrosion performance of the metals is achieved.

The invention discloses an automatic surface smoothness detection device, which relates to the technical field of surface smoothness detection, and comprises an optical platform, the upper end face of which is provided with a strip-shaped positioning through hole; the wedge interference mechanism comprises a standard plane slide I and a workpiece clamping and positioning mechanism; the first standard plane slide is perpendicular to the upper end face of the optical platform. A clamping part of the workpiece clamping and positioning mechanism can clamp and move a to-be-detected workpiece, so that the to-be-detected workpiece horizontally corresponds to the standard plane slide I, an air wedge I with a preset included angle I is formed, and the to-be-detected workpiece can be driven to descend to penetrate through the strip-shaped positioning through hole; the CCD scanning mechanism comprises a light source part and a CCD scanning detection part; the light source part is mounted on the CCD scanning detection part; the sorting mechanism is located below the optical platform and corresponds to the strip-shaped positioning through holes so as to bear the workpieces to be detected and carry out classified conveying. The method can rapidly and accurately carry out automatic nondestructive detection on the surface smoothness of the workpiece to be detected, has relatively high detection efficiency and stability, and can meet the batch detection requirement.

The invention relates to the technical field of optical-mechanical system glue application, and discloses a system and a method for testing glue curing shrinkage stability of an optical-mechanical system of a laser machine. The system comprises a pressing and fixing device which comprises a spring, a pull rod, a needle gauge, a pressing piece and a fixing block, and position switching of the needle gauge between the inner surface and the outer surface of the fixing block is achieved by rotating the pull rod head corresponding to the pull rod; the glue curing unit comprises a UV curing device, a precise temperature control heating platform and a moisture curing environment generator; the light source unit comprises a laser light source and a stable support structure with a clearance fit hoop; the optical machine gluing unit comprises a mirror base and a reflecting mirror; the pressing and fixing device is rigidly connected with the optical platform through the aluminum profile portal frame; the data acquisition unit comprises a CCD (charge coupled device) sensor, a three-dimensional adjustable fixing device and an analysis module, and the analysis module generates a multi-dimensional stability index by resolving the time sequence data of the coordinates of the reflected light spots acquired by the CCD sensor in real time so as to complete the glue curing shrinkage stability test.

The invention provides a lens optical axis consistency inspection device and a detection method thereof, and relates to the technical field of lens optical axis consistency, and the lens optical axis consistency inspection device comprises an optical platform as an installation reference, a target plate structural member which is fixed on the platform and is provided with a first cross mark, and a fixed seat structural member which is spaced from a target plate by a preset distance and is used for installing a to-be-detected lens module. The method is characterized in that the lens optical axis consistency is evaluated by comparing the position deviation between a target plate mark image acquired by a lens module and a second mark generated by a sensor. According to the invention, a simple mechanical structure is used for replacing a traditional expensive and complex instrument, and through a unique double-label comparison principle, not only can rapid qualitative screening be realized, but also accurate quantitative calculation can be carried out. The device has the outstanding advantages of low cost, simplicity and convenience in operation and high detection efficiency. The design effectively solves the problem of rapid detection of the consistency of the batch lens centers of the production line, significantly reduces the detection threshold and cost, and is of great significance to the improvement of the product quality control level.

The invention discloses a cold head top-mounted low-temperature vibration reduction system for an ion trap, and belongs to the field of ultralow-temperature ion trap quantum computing. Comprising an optical platform, a refrigerator and a vacuum cavity, and the vacuum cavity comprises a low-temperature cavity and a coupling cavity; the optical platform is connected with the ground through the first damping structure, and the refrigerator is connected with the ground through the second damping structure. On one hand, vibration of the refrigerator is reduced in a corrugated pipe mode, and meanwhile the refrigerator body and the optical platform are supported and damped. In addition, vibration reduction for heat transfer is superposed, and heat vibration reduction can be effectively realized, so that the requirements of ion trap quantum calculation are met.

The invention relates to the technical field of optics, in particular to a coaxial alignment system and a coaxial alignment method of a cage system, and the cage system comprises at least two supporting plates used for installing optical elements and a plurality of connecting rods connected with the supporting plates; the coaxial alignment system comprises an angle detection assembly, a displacement adjustment assembly and a controller. The angle detection assembly is installed on the cage type system and used for detecting space angle data of the cage type system in real time. One end of the displacement adjusting assembly is connected with the supporting plate, and the other end is used for being connected with an optical platform. The controller is electrically connected with the angle detection assembly and the displacement adjusting assembly and controls the displacement adjusting assembly to adjust the spatial position of the cage type system. According to the coaxial alignment system of the cage type system, the coaxial adjustment efficiency and adjustment precision of the cage type system can be greatly improved.

The invention discloses a side edge guiding optical platform, a camera module and electronic equipment, and relates to the technical field of image equipment, and the side edge guiding optical platform comprises a base which is provided with a first abutting part; the movable seat is provided with a second abutting part; the guide piece is arranged on the side face of the base and the side face of the movable seat, the guide piece is provided with a first guide face matched with the first abutting part and further provided with a second guide face matched with the second abutting part, and the first guide face and the second guide face are arranged at an angle; the limiting mechanism acts between the base and the guide piece and between the guide piece and the movable seat and is used for enabling the first abutting part to be always in abutting fit with the first guide surface and enabling the second abutting part to be always in abutting fit with the second guide surface; according to the side edge guiding optical platform, the guiding piece is matched with the side face of the base and the side face of the movable base, efficient integration of space is achieved, and therefore the problem that an existing side edge guiding optical platform is large in height in the optical axis direction is solved.

The invention provides a time delay interference ground semi-physical experiment verification scheme, which comprises the following steps of: (1) based on a space gravitational wave detection task and a load configuration scheme, acquiring core measurement of the space gravitational wave detection task, and recording measurement data; (2) constructing an algebraic relationship of a time delay interference scheme for effectively eliminating secondary noise such as laser frequency noise and optical platform jitter, and calculating according to the algebraic relationship to obtain a solution of first-generation time delay interference and a solution of first-generation basic combination; and (3) repeating the step (2) for multiple rounds to compensate the difference of the equivalent interference measurement arm length and further suppress the laser frequency noise. The half-physical simulation platform is reasonable in conception, the half-physical simulation platform of the Michelson interferometer with the unequal arms and equivalent to the million kilometer arm length is built by combining an arm locking frequency stabilization system and an electronic phase time delay system, and effective suppression of laser frequency noise is achieved.

The invention provides a flexible electrode automatic implantation operation system, which belongs to the field of electrode implantation operation systems, and comprises an implantation robot, a flexible electrode fixing table, a photoelectric navigator, a first positioning mark, a second positioning mark, a third positioning mark, a craniocerebral supporting plate and an optical platform, the implantation robot can move to the side of the optical platform, and the flexible electrode fixing table is fixed on the optical platform; a first positioning mark is arranged on the craniocerebral supporting plate, a second positioning mark is arranged on an implantation head at the tail end of the implantation robot, and a third positioning mark is arranged on the flexible electrode fixing table and used for unifying the position and posture information of the implantation robot, the flexible electrode fixing table and the craniocerebral supporting plate to a photoelectric navigator coordinate system; and the photoelectric navigator automatically adjusts the flexible electrode and the brain to a working area of the implantation robot. Manual intervention is not needed, and the implantation operation efficiency is effectively improved.

The utility model discloses a structure diagram of a three-dimensional optical platform for particle image velocity measurement, the three-dimensional optical platform for particle image velocity measurement comprises a bottom plate and at least one platform assembly, the platform assembly comprises a platform plate, a first translation member, a lifting member and a second translation member, the first translation member is connected to the platform plate, and the lifting member is connected to the platform plate. The first translation part is used for driving the platform plate to translate relative to the bottom plate in the first direction, the lifting part is connected to the first translation part and used for driving the platform plate to translate relative to the bottom plate in the second direction, the second translation part is connected to the lifting part and used for driving the platform plate to translate relative to the bottom plate in the third direction, and the first direction, the second direction and the third direction are perpendicular to one another in pairs. The utility model can effectively solve the problem that the device in the prior art can only drive the camera to move in two degrees of freedom and cannot meet the use requirement of three-dimensional movement.

The present invention discloses a dual-rotor test bench device, which belongs to the technical field of gas turbines and aeroengines, and includes an optical platform and a drive system, a dual-rotor system, a control system and a test system; the optical platform includes an optical platform table and vibration isolation legs; the drive system includes a first drive unit and a second drive unit; the dual-rotor system includes a low-pressure rotor connected to the first drive unit through a spring coupling and a high-pressure rotor connected to the second drive unit through a drive assembly, and the axis of the low-pressure rotor and the high-pressure rotor are arranged on the same horizontal line; the control system includes a trio motion controller; the test system includes a displacement sensor and a sensor base for fixing the displacement sensor. The present invention adopts a dual-rotor test bench device of the above structure, which has a scientific structure, simple process, few workpieces, light weight and low cost, high speed, and is easy to promote, and can be used to carry out experiments such as the dynamic characteristics of the dual-rotor system.

The invention discloses a galvanometer motor linearity and symmetry detection device and method, the device comprises an optical platform provided with a detection station, and the detection station comprises a machine base fixed on the optical platform; the fixed seat is arranged on one side of the machine base; the laser is arranged on the fixed seat; the first optical reflecting mirror is positioned in a receivable range of the first laser beam; the second optical reflecting mirror is positioned in a receivable range of the second laser beam reflected by the first optical reflecting mirror; the first diaphragm is embedded in the machine base; the second diaphragm is embedded in the fixed seat, and a third laser beam reflected by the second optical reflector can penetrate through the second diaphragm; a galvanometer piece of the galvanometer motor is located in a receivable range of a fourth laser beam emitted by the second diaphragm; and the light spot acquisition device is positioned in a receivable range of the fifth laser beam reflected by the galvanometer. The device is simple in structure, low in cost and small in occupied space; operation is simple, verification is convenient, and the performance quality of the galvanometer motor can be rapidly detected.

The utility model provides a chip defect detection device, belongs to the field of chip defect detection, aims to solve the problem that an existing chip defect detection device cannot conveniently and stably adjust and detect defects of a wafer without patterns, and comprises an optical platform and a guide block, a first translation table, a hydraulic rod, an adjusting plate and a third servo motor are fixedly installed on the top end face of the optical platform, a first servo motor is installed in the first translation table, the output end of the first servo motor is connected with a first threaded rod, and the first threaded rod is rotationally connected into the first translation table. The first threaded rod can drive the first sliding block to move leftwards or rightwards in the first translation table, and the second threaded rod can drive the second sliding block to move forwards or backwards in the first sliding block, so that the second translation table can be driven to move forwards, backwards or leftwards and rightwards conveniently and stably; the scanning device is used for scanning different positions of a to-be-tested chip.

The invention relates to a laser radar rotating mirror testing device and method, and the device employs a double-light-path design: a testing light source is subjected to beam splitting through a spectroscope, is reflected by a reflector I and a rotating mirror to form a testing light spot, is reflected by a reflector II to form a reference light spot, and is synchronously projected to a testing plate; a high-precision camera is used for capturing light spot displacement, a reference mark is combined to calibrate a coordinate system, and sub-milliradian level detection of rotating mirror angle drift is achieved. A sealed heat preservation cover is linked with temperature control equipment, so that the temperature control precision of + / -0.1 DEG C is realized; the integrated clamp synchronously fixes the rotating mirror and the reflecting mirror II to eliminate relative displacement errors of parts; the damping optical platform thoroughly isolates ground vibration; the same test light source reduces test errors. According to the testing method, a drift curve is automatically generated through temperature circulation (-40 DEG C to 85 DEG C), the angle drift amount is calculated according to a formula, a temperature compensation model is output, and rotating mirror temperature drift characteristic evaluation and compensation parameters are provided for the high-precision laser radar.

Weeding apparatus includes a concentrator assembly having a two-dimensional array of discrete semiconductor light emitters (2), e.g. laser diodes or LEDs. A primary optical stage (3) includes collimating lenses (4) each corresponding to one of the semiconductor light emitters (2) to collimate their light and produce a compound collimated beam. A secondary optical stage (5) incorporates a lens system arranged to convert the collimated beam into a convergent beam to concentrate the emitted light at a focal position. The concentrator assembly (1) may be incorporated in a weeding unit with a mechanical drive arrangement to direct the focal position onto a selected plant. A number of such weeding units maybe incorporated in a weeding module along with a control system. The weeding modules can be carried by an autonomous rover.

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 discloses a granular material micromechanics test platform and method based on an optical measurement technology, the test platform is provided with a polarized light source, a polarizer, a biaxial loading device, an LED light source, an analyzer and an image acquisition system from left to right in sequence, and the optical platform is also provided with a control system. And the control system is electrically connected with the biaxial loading device. The granular material micromechanics test platform is based on an optical measurement technology, shearing of a two-dimensional dense particle system is achieved through movement of the adjustable biaxial loading device, switching between a polarized light field and an unpolarized light field can be achieved by rotating the polarization analyzer, so that test images under different light fields are obtained, and the test precision is improved. A photoelastic technology and a digital image related technology are combined to carry out contact force and dynamics analysis; according to the granular material micromechanics test platform, contact force and dynamic information of the granular material can be visually and synchronously obtained through a high-precision and high-acquisition-frequency image acquisition technology without contact.

The invention discloses a high-precision north-seeking device and method for a mining drilling machine. The north-seeking device comprises a shell, a battery module, a measurement module, a charging interface, a communication interface, a display module, a measurement switch, a calibration switch, a guide rail magnetic attraction base and a matched fixed optical platform. According to the north-seeking device, the single-axis MEMS gyroscope and the six-axis IMU are combined for north seeking, and the double functions of north seeking and attitude tracking of the drilling machine can be achieved; the device adopts a self-calibration error correction technology, after the north-seeking device is assembled, the device only needs to be quickly placed on a matched fixed optical platform, a calibration button is turned on, system error compensation can be automatically completed, the overall north-seeking precision is improved, and the method only needs to be carried out once after the assembly is completed; for IMU accumulative errors caused by long-term underground use of the north seeker, the device regularly corrects the IMU errors according to the starting times, gyro error compensation in the IMU can be automatically completed, the tracking precision of the north seeker is improved, and the long-term stability of the north seeker is ensured.

The invention discloses a high-temperature liquid environment impact-tangential multi-mode fretting wear test method and device. The device comprises an optical platform, a gas supply device, and an impact loading mechanism, a tangential movement mechanism, a test kettle, a test crucible and a liquid storage kettle which are mounted on the optical platform, the impact loading mechanism comprises an impact loading voice coil motor module, an impact shaft and an impact shaft supporting assembly; the tangential movement mechanism comprises a tangential movement voice coil motor module, a tangential shaft and a tangential shaft supporting assembly; and a test kettle cover and a liquid storage kettle cover are respectively arranged on the test kettle and the liquid storage kettle. According to the testing machine, various contact modes can be tested, the displacement adjustable range of the impact loading module and the tangential motion module is larger than that of an existing testing machine in the industry, the testing mode can cover the micro-motion and sliding range, and the application range is wider; various liquid environments such as liquid lead bismuth and water in the nuclear power field can be simulated, and meanwhile the temperature and the oxygen content in the environments can be regulated and controlled.

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 provides a test system and method for loading and detecting a moving magnetic field of a magnetic bearing, and belongs to the technical field of permanent magnet equipment detection, aiming at the problem that a magnetic field detection instrument has a single detection mode and cannot simulate and test magnetic field distribution characteristics of the magnetic bearing under special working conditions such as axial deviation and radial eccentricity. A displacement loading device of the test system comprises an optical platform, a Z-axis lifting platform, a loading device X-axis movement mechanism, a loading device Y-axis movement mechanism, a T-shaped rotary table, a sample piece and a clamping mechanism, the time-varying magnetic field detection device comprises a support, a testing device Y-axis movement mechanism, a testing device Z-axis movement mechanism, a testing device X-axis movement mechanism, a connecting frame, an electric slip ring, a rotary table base, a testing device U-axis movement mechanism, a probe support and a probe mechanism. The method can effectively cover real-time magnetic field detection of various magnetic bearings (active, passive and hybrid magnetic bearings) under axial and radial offset.

The utility model discloses an angle magnification optical diffraction experiment device. Comprising a one-dimensional optical slide rail, and a helium-neon laser, a one-dimensional arrangement lens group and a receiving measurement assembly which are sequentially arranged at intervals along an optical axis from an object side to an image side, and samples used for diffraction experiments are arranged among lenses in the one-dimensional arrangement lens group along the optical axis direction. The one-dimensional arrangement lens group, the receiving and measuring assembly and the sample are slidably mounted on the one-dimensional optical slide rail; and the helium-neon laser and the one-dimensional optical slide rail are both arranged on the top surface of the optical platform. According to the utility model, through the beam expanding light path and the angle amplification light path which are formed by the lens group, the diameter of the laser beam and the diffraction angle are respectively enlarged, so that diffraction spots of a macroscopic object are clearly visible on a naked eye resolution scale, the device can be used for displaying diffraction and interference phenomena of various large-size structures, and the whole set of device is simple, compact and convenient to use. The device is clear in structure, has high flexibility, and can be widely applied to physical optical experiment teaching.

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 discloses an optical aspheric optical axis calibration system and method based on a CGH, and belongs to the technical field of precision optical machine installation and adjustment. The system comprises an optical platform, wherein a first theodolite, an interferometer, a CGH and an aspherical mirror to be calibrated are sequentially arranged on the optical platform along a light transmission path; the aspheric mirror to be calibrated is provided with a calibration accurate measurement mirror. The first theodolite, the interferometer, the CGH and the aspherical mirror to be calibrated are all arranged on the position-adjustable platform. The method comprises the following steps: step 1, adjusting an alignment area of the CGH to be aligned with an interferometer; 2, adjusting the position of a to-be-calibrated aspherical mirror, and enabling the angle between the optical axis of the CGH and the optical axis of the to-be-calibrated aspherical mirror to be consistent with a theoretical angle; 3, calculating a theoretical pitch angle between the optical axis of the CGH and the aspherical mirror to be calibrated; 4, transferring the angle reference of the CGH to a first theodolite; and step 5, installing the to-be-calibrated fine measurement mirror on the to-be-calibrated aspherical mirror.

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.