124 results about "Single beam" patented technology

The invention discloses an off-line adjusting device and method for light spot position offset adjustment, and belongs to the technical field of optical precision adjustment. The device comprises a single-beam light-emitting direction adjusting device, a single-beam light-emitting position adjusting device and a multi-beam angle adjusting device which can be formed on the same off-line platform by configuring different detection units. The method comprises the following steps of: calibrating a light source by using the devices in sequence, and constructing an ideal light source assembly with accurate direction, accurate position and multi-beam parallelism; the whole device is installed to a complete machine system to serve as an absolute reference, and a complete machine optical element is adjusted to make a light spot reach a preset position; and finally, replacing with a customized light source and carrying out fine adjustment by taking the calibrated optical element as a reference. According to the method, decoupling of light source calibration and optical element calibration is achieved through the process of establishing the benchmark offline, transmitting the benchmark through the whole machine and customizing light source adaptation, the installation and adjustment precision, efficiency and repeatability are remarkably improved, and dependence on operation experience is reduced.

The invention discloses an unknown environment mapping method for a single-beam laser of aircraft, which belongs to the field of three-dimensional map reconstruction technology. Firstly, the data collected by a single-beam LiDAR is aligned with the timestamp of the stepper motor, and the obtained point cloud data is filtered and matched to obtain three-dimensional map information. The pose of the aircraft is estimated by the wheel odometer and IMU, and the loop detection is performed to reduce the cumulative error and update the three-dimensional map information in real time. The frontier search algorithm is used to determine the target point of the aircraft flight, the A* algorithm is used to plan the path trajectory, and the B-spline curve optimization algorithm is used to make the trajectory of the aircraft smoother. The control command is sent to the aircraft, and then the global three-dimensional map of the unknown environment is obtained.

The invention relates to the technical field of micro-fluidic chips, and discloses a multi-fluid effect synergistic three-dimensional single-row focusing micro-fluidic chip and a method for single-line focusing of polystyrene microspheres by using the micro-fluidic chip, the micro-fluidic chip comprises a sample liquid inlet, one end of the sample liquid inlet is provided with an inertia focusing link, and the other end of the sample liquid inlet is provided with an inertia focusing link; a tapered flow guide cone structure is arranged between the inertial focusing link and the sample liquid inlet and is used for inhibiting the initial dispersion and diffusion trend of particles at the sample liquid inlet; the bionic gradient height structure is positioned at one end, far away from the tapered flow guide cone structure, of the inertial focusing link and is used for focusing and compressing the particles in the vertical direction; a sheath fluid focusing area is arranged at one end, far away from the inertial focusing link, of the bionic gradient height structure, and a sheath fluid inlet and a chip mixed liquid outlet are sequentially formed in one end, far away from the bionic gradient height structure, of the sheath fluid focusing area. According to the invention, efficient three-dimensional centered arrangement is realized, dynamic convergence of a particle trajectory from a dispersion state to a central single beam is realized, and a digital focusing regulation capability is realized.

The application discloses a kind of monitoring devices of pressure fluctuation frequency and amplitude in cavitation collapse process, including water tank, cavitation generator, magnetic fluid, magnetic field device, laser generator, optical splitter, laser probe and receiver;Optical splitter is emitted by single beam laser of laser generator and is divided into two beams, one is emitted as laser, frequency is f ;Another is as reference laser, frequency is f + f r ;Laser probe exports and irradiates on the tip of magnetic fluid by emitting laser, and reflection is formed to form reflected laser, and its frequency is f + f D ;Receiver, accept reflected laser, and it has reference laser inside by optical splitter, and its frequency is f + f r The application can master the whole dynamic data of quantized cavitation collapse by monitoring the frequency and amplitude of whole process pressure fluctuation caused by cavitation collapse in liquid environment through magnetic fluid magneto-rheological effect, tip surface effect and Doppler effect, which provides important technical means for single-cavity theory development and hydraulic machinery cavitation flow research.

The invention relates to a terahertz communication safety beamforming method and a communication system, and the method comprises the steps: observing a system state through an intelligent agent to construct a state vector, and the system state comprises channel state information of a legal user and a potential eavesdropper; outputting a beamforming vector according to the state vector through a strategy network in the intelligent agent; the power constraint layer normalizes the beam forming vector to obtain a final beam forming vector, and performs signal transmission; and calculating a reward value according to a result after signal transmission, and updating network parameters of the deep reinforcement learning agent based on the reward value. After training is completed, only one time of neural network forward propagation is needed for online decision making, the delay of single-time beam updating is lower than 1.5 ms, the complexity is far lower than that of a convex optimization method such as SDR, and the method is suitable for a terahertz high-speed real-time communication scene.

The invention relates to an intelligent design method for an equivalent single beam of a cable bearing bridge. The intelligent design method comprises the steps that basic design indexes of the cable bearing bridge are set; based on a BP neural network model, the basic design indexes are used for generating design parameters of an equivalent single beam of the cable bearing bridge, and the design parameters comprise section characteristics, dead load set degree and equivalent torsion mass; and establishing a finite element model of the equivalent single beam based on the design parameters of the equivalent single beam. The method comprises the following steps: firstly, setting a basic design index, and then quickly generating design parameters of an equivalent single beam based on a BP neural network model so as to establish a finite element model; dependence on experience of designers is reduced, determination difficulty of design parameters is reduced, particularly, when scheme comparison and selection are needed, design parameters corresponding to equivalent single beams are generated according to different basic design indexes, scheme comparison and selection efficiency is greatly improved, and reference is provided for main beam design decision making of cable bearing bridges.

The application discloses a modified eccentric compression method considering torsional constraint stiffness of end cross beams. The steps are as follows: (1) obtaining relevant parameters of the beam bridge according to engineering data; (2) calculating the torsional constraint stiffness of the end cross beams to the main beam; (3) calculating the load transverse distribution coefficient at the fulcrum point through the lever principle method, and the single-web section main beam and double main beam bridge are calculated by using a single beam model, and the double-web three main beam and more main beam bridges with multiple pieces are calculated by using a double beam model; (4) calculating the load transverse distribution coefficient of the main beam in the longitudinal bridge direction at any position by the modified eccentric compression method considering the torsional constraint of the beam end; (5) considering the change of the load transverse distribution along the longitudinal bridge direction for the concentrated load, taking the load transverse distribution coefficient at the midspan position for the uniformly distributed load, and then calculating the load effect. The method considers the elastic support of the stiffness of the end cross beam to the torsional deformation of the main beam, and provides a new high-precision method for the load transverse distribution calculation of the box section beam bridge.

The invention discloses a Raman beam combination laser amplifier, relates to the technical field of laser, and aims to solve the problem of low conversion efficiency of an existing beam combination laser amplifier. A first bowl-shaped reflecting mirror and a second bowl-shaped reflecting mirror are coaxially arranged at the two ends of a columnar reflecting mirror assembly, the concave surfaces face the columnar reflecting mirror assembly, and a Raman laser crystal is arranged in the columnar reflecting mirror assembly; seed light output by the seed light module enters the Raman laser crystal through the center of the first bowl-shaped reflector; and a plurality of beams of fundamental frequency light output by the plurality of fundamental frequency light modules are obliquely incident to the Raman laser crystal from the side surface of the columnar reflector assembly. Each beam of fundamental frequency light of the Raman beam combination laser amplifier can be reflected for multiple times in the amplifier and interacts with the seed light for multiple times, the conversion efficiency of the single beam of fundamental frequency light is improved, the adjustment difficulty of the fundamental frequency light module is low, and the Raman beam combination laser amplifier is suitable for integrated use.

The invention discloses a method and device for modulating random polarized light through a liquid crystal spatial light modulator, and relates to the technical field of light field regulation and control. The device comprises a laser, a two-in-one optical fiber, a beam expander, a polarization beam splitter (PBS), a 1 / 2 wave plate, an optical fiber coupler, a polarization maintaining optical fiber, a liquid crystal spatial light modulator and other core components, wherein the liquid crystal spatial light modulator is reflective or transmissive. According to the method, random polarized light is divided into parallel and vertical polarized light components through a PBS, the vertical polarized light is converted by a 45-degree 1 / 2 wave plate and then is transmitted by a polarization maintaining optical fiber and is converged with the original parallel polarized light component, or the vertical polarized light is directly used for preheating a sample to be processed, and the converged single beam of parallel polarized light is modulated by a liquid crystal spatial light modulator. Single-beam modulation is achieved, high-power large light spot application is adapted, the hologram manufacturing difficulty is lowered, the light path structure is simplified, light energy loss is reduced, and the device is suitable for 3D metal printing, laser welding and other scenes.

The invention discloses a satellite internet spaceborne base station load balancing method, which comprises the following steps that: a source spaceborne base station detects the load value of each cell under the source spaceborne base station, and triggers a load balancing process when the load value of the cell under the source spaceborne base station exceeds a preset high load threshold value; in the load balancing process, at least one load balancing operation of intra-station inter-cell load balancing, intra-satellite inter-base-station load balancing and inter-satellite inter-base-station load balancing is executed according to a preset priority sequence until the load of a high-load cell is lower than a preset self-load recovery threshold value; according to the invention, through a hierarchical load balancing mechanism, the problem that resources cannot be dynamically scheduled when a single beam is overloaded in the prior art is effectively solved, and the resource scheduling range is expanded step by step according to the in-station, in-satellite and inter-satellite priority order; it is ensured that under the high load condition, pilot frequency cells in the satellite-borne base station, other satellite-borne base stations in the satellite and adjacent satellite resources can be fully utilized for load sharing.

The utility model relates to the technical field of single-beam cranes, and discloses a single-beam crane with an adjusting structure, which comprises two support adjusting mechanisms, two angle adjusting mechanisms and a guide mechanism, the two adjusting seats are slidably connected to the two sides of the top of the supporting plate correspondingly, the two guide blocks are fixedly installed on the two sides of the top of the supporting plate correspondingly and located between the two adjusting seats, and the protection plate is in threaded connection to the top of the supporting plate through bolts. According to the single-beam crane with the adjusting structure, the supporting plate and the two adjusting seats are arranged in a matched mode, the positions of the two adjusting seats can be adjusted relatively according to different weighing requirements, then the adjusting seats are matched with the supporting plate, and the effect of adjusting the contact area between the adjusting seats and a track is achieved; the device can meet the requirements of different lifting weights, and meanwhile the rollover prevention capacity of the device can be improved.

The invention relates to a double-droplet optical tweezers spontaneous / stimulated Raman spatial resolution measurement device and method based on a confocal system, belongs to the technical field of aerosol microdroplet spectrum trace analysis, and solves the problems that an existing aerosol double-droplet detection device generally depends on a traditional single-beam optical system, cannot capture double droplets, is insufficient in spatial resolution, cannot capture the double droplets, and cannot capture the double droplets. And high-precision spatial resolution is difficult to realize for capturing and dynamic monitoring of the double liquid drops. The device comprises a double-droplet suspension system, an environmental atmosphere control system, an optical path coupling system, a dynamic signal processing system, a droplet imaging system and a confocal optical system. The environment atmosphere control system is communicated with the double-droplet suspension system, and the confocal optical system is respectively communicated with the double-droplet suspension system, the dynamic signal processing system, the droplet imaging system and the light path coupling system; the confocal optical system comprises a microscope objective and a long-wave reflecting short-wave pass mirror, and the microscope objective is arranged between the long-wave reflecting short-wave pass mirror and the double-droplet suspension system.

The utility model discloses an assembled beam body of a folding awning, the beam body is composed of a main beam and an auxiliary beam, the main beam is provided with a rotating end groove, and the auxiliary beam is provided with a rotating end matched with the rotating end groove; a driving mechanism is arranged in the main beam, and a traction piece is arranged on the main beam; a plurality of groups of pulley assemblies are arranged in the secondary beam; the auxiliary beam is turned over with the rotating end groove as a rotating fulcrum, so that the auxiliary beam is located on the inner side of the main beam, and one pulley assembly is connected with the traction piece. On the premise of ensuring the basic linkage curtain cloth rod, a single-beam structure is changed into an assembled beam body structure, so that the convenience in mounting or replacing and dismounting can be ensured, the time and labor are saved, the mounting efficiency is improved, and various accessories can be ensured to be mounted on the folding awning.

The invention relates to the technical field of graphene preparation, and particularly discloses a controllable preparation method of high-uniformity laser-induced graphene, which comprises the following steps of: acting a main processing light beam, an annealing auxiliary light beam and a quenching auxiliary light beam on the same processing area of a substrate in a space-time synergistic manner, the main processing light beam is used for inducing the substrate to generate graphitization to form an sp2 carbon network; the annealing auxiliary light beam is triggered by a pulse of a preset delay time relative to the main processing light beam and is used for carrying out in-situ annealing on the processing area so as to repair defects in the sp2 carbon network; and the quenching auxiliary light beam is used for generating a plasma sheath layer in the processing area to isolate air and prevent oxidation. Through a three-beam space-time cooperative processing mechanism of main processing beam induced graphitization-annealing auxiliary beam in-situ annealing-quenching auxiliary beam plasma quenching, the problems of uneven interlayer structure and high defect density caused by a heat accumulation effect in traditional single-beam laser processing are solved.

The application discloses a kind of multi-spot collaborative laser shock peening equipment and method, including sequentially arranged main laser, main galvanometer, diffractive beam splitting device DOE, acousto-optic modulator AOM, MEMS galvanometer, light splitting and combining mirror, field lens along laser transmission optical path, and the CCD camera, robot and workbench of cooperative work;The application is divided into multiple beam sub-laser by diffractive beam splitting device DOE, each sub-laser is regulated by power through each independent acousto-optic modulator AOM, each independent MEMS galvanometer regulates angle, and the sub-laser after regulation and CCD camera optical path are coaxial by light splitting and combining mirror, whether to hit deviation is judged by CCD camera, and the three are coordinated to make multiple beam sub-laser collaborative processing complex surface, avoid the position of traditional single beam laser inconveniently processing complex surface, especially recess, improve processing efficiency and precision.

The utility model discloses a miniaturized single-beam reflection-type atom magnetometer probe and an atom magnetometer. The atom magnetometer probe comprises a housing; an alkali metal atom gas cell; the combined prism is arranged on one side of the alkali metal atom gas chamber; the reflecting mirror is arranged on the other side of the alkali metal atom gas chamber; the photoelectric detector is arranged on one side, deviating from the alkali metal atom gas chamber, of the combined prism; the combined prism is used for converting collimated light received by the incident plane into circularly polarized light, the circularly polarized light is emitted to the alkali metal atom gas chamber through the emergent plane, and the reflector is used for reflecting pumping light passing through the alkali metal atom gas chamber back to the alkali metal atom gas chamber. The absorption optical path of the pumping light is remarkably improved, secondary polarization is achieved, meanwhile, the action intensity of the pumping light and alkali metal atoms is improved, the number of atoms is equivalently increased in a limited area, higher sensitivity can be achieved at a lower temperature, the performance of the single-beam atom magnetometer is remarkably improved, and miniaturization design is facilitated.

The invention provides a control method, device and equipment for a downlink data transmission beam in a mobile scene, and belongs to the technical field of wireless communication. A wireless access point obtains an angle, a moving speed and an angle moving direction of a tracking beam according to feedback information of a mobile user, forms a millimeter wave beam pointing to the mobile user, and transmits the millimeter wave beam to the mobile user; and the millimeter wave beam state (mainly width and direction) of the wireless access point is continuously adjusted to realize beam angle tracking and beam width adjustment, so that services are provided for mobile users under the condition of ensuring effective single-beam coverage, namely a small number of distinguishable beams, the number of the distinguishable beams is reduced, and the user experience is improved. On the premise of ensuring high-rate data communication in a mobile scene, estimation pressure and data transmission cost of downlink channel state information are effectively reduced, a downlink data high-speed transmission process is effectively simplified, and efficient downlink high-rate data service is realized.

This invention discloses a wavelength division multiplexing (WDM) trapping device and a method for measuring extremely weak forces in a single-beam vacuum optical trap. A fiber laser emits a laser beam, which passes sequentially along the fiber through a fiber acousto-optic modulator, a fiber beam splitter, and a 1064nm fiber collimator to obtain beam A. Beam A is transmitted through a dichroic mirror into a vacuum cavity, trapping and detecting micro / nano particles. Beams B, C, and D, obtained through multiple fiber beam splitters, a PPLN waveguide frequency doubling module, a fiber electro-optic modulator, and a 532nm fiber collimator, sequentially enter the vacuum cavity to triaxially cool the micro / nano particles in a vacuum environment. At this point, the micro / nano particles are in a stable state. A voltage is applied to the electrode plate, reducing the intensity of beam A, ultimately achieving a balance between electric field force and gravity. The electric field force is then used as the measurement value for the gravity of the micro / nano particles. This invention employs a wavelength division multiplexing method, achieving triaxial cooling, trapping, and detection with only one light source, and using optical fiber to replace most optical components, resulting in greater integration.

A module accommodates multiple superluminescent light emitting diodes, SLEDs, 12r, 12g and 12b. The SLEDs are arranged in an enclosure and output respective light beams to propagate into free space within the enclosure. The individual light beams from the SLED sources are combined into a single beam path within the enclosure using beam combiners 40r-g, 40rg-b. Each beam combiner is realized as a planar optical element, the back side of which is arranged to receive a SLED beam and route it through the optical element to the front side where it is combined with another SLED beam that is incident on and reflected by the front side. The free-space propagating combined beam is output from the module via an optical fiber 42 (or through a window).

The invention relates to an optical microcavity with an on-chip support and a packaging method thereof.The optical microcavity with the on-chip support comprises a substrate, an optical microcavity body and an on-chip fork supporting structure, the forked end of the on-chip fork supporting structure comprises two prong structures, the tail ends of the prong structures face the optical microcavity body, and the prong structures are arranged on the substrate. And the roots of the fork tooth structures are combined into a single-beam structure which is fixedly supported on the substrate. On-chip supporting in the optical microcavity packaging process can be achieved, the coupling stability is obviously higher than that of an optical microcavity sample without on-chip supporting, and the influence of curing of ultraviolet curing glue on coupling loss is greatly reduced.

A bathing or showering transfer bench includes a single beam supporting first and second side pedestals, and a carriage slidably supported on the single beam. A seat is rotationally supported on the carriage and configured to slide with the carriage along the single beam between the first and second side pedestals.

The invention discloses a device and a method for measuring a solid higher harmonic phase, and belongs to the technical field of ultrafast laser. According to the invention, a single beam of driving laser is adopted, two spatially separated harmonic light sources are formed through higher harmonic response of two different harmonic targets, and a complex beam splitting light path design is not needed; by changing the laser wavelength, the influence of the single variable of the laser wavelength on the interference fringes under the condition of fixed interference spacing can be observed; single-order higher harmonics are screened out through a band-pass filter, and far-field interference of the single-order higher harmonics is directly measured on a camera; the distance, the material type and the micro-nano structure of the harmonic target material can be customized through a modern mature technology, and the customizable parameters are closely related to the period, the resolution ratio, the light intensity response and other properties of interference fringe measurement; according to the invention, the resolution of stripe movement measurement is obviously improved by reducing the harmonic target distance; the method is particularly suitable for measuring the two-dimensional layered material which is difficult to prepare the bulk single crystal.

This invention relates to the field of ultrasensitive magnetic measurement technology based on quantum sensing, and in particular to a single-beam zero-magnetic-field dual-axis vector magnetometer and its usage and applications. This invention employs a single probe laser beam to simultaneously perform pumping and detection functions, and innovatively combines the tensor-vector polar moment conversion (AOC) effect, magnetic field modulation, and large-amplitude modulation of the optical frequency. This significantly reduces the resonant linewidth of the magnetometer while suppressing photon shot noise and detector electronic noise, and achieves dual-axis magnetic field measurement in a zero-magnetic environment. In laboratory desktop experiments, a sensitivity of level 10 can be achieved.

The embodiment of the invention provides a broadband Doppler sonar signal processing method and system, and belongs to the technical field of signals. The method comprises the following steps: receiving echo signals after the broadband Doppler sonar transmits a plurality of pulse signals; performing frequency shift estimation on a single pulse of the echo signal to obtain a frequency shift interval; performing inter-pulse frequency calculation on the echo signal to obtain an average frequency of a single beam channel; performing frequency shift value calculation according to the average frequency and the frequency shift interval to obtain an echo offset value of a single beam channel; and performing speed calculation according to the echo offset values of the plurality of beam channels to obtain the three-dimensional speed of the measured target. According to the embodiment of the invention, the speed measurement precision of the broadband Doppler sonar under the shallow water condition can be improved.

The invention discloses a red-sensitive holographic photopolymer based on an acrylate-acetate copolymerization system and a preparation method of the red-sensitive holographic photopolymer. According to the method, the influence of exposure and post-processing parameters on the holographic recording performance of the red-sensitive photopolymer is systematically studied, the diffraction efficiency of the red-sensitive photopolymer is more than 95%, the refractive index modulation (RIM) reaches 0.03, the sensitivity (S) is 4.87 * 1cm / mJ, the spatial frequency (SF) reaches 4757 lp / mm, and the performance of the red-sensitive photopolymer is superior to that of the existing red-sensitive photopolymer; a one-step single-beam exposure method and a two-step double-beam exposure method are respectively adopted to prepare the reflective Denisyuk hologram, and the light intensity ratio of parameters is researched to obtain the high-quality hologram, so that the application potential in the fields of anti-counterfeiting, holographic three-dimensional imaging, AR display and the like is shown. According to the invention, high performance of the red-sensitive holographic photopolymer is realized, and a high-quality material and technical support are provided for related holographic application.

A water diversion buried culvert top plate supporting device for a water conservancy project comprises a support (1) installed on a buried culvert side wall steel mold, a supporting rod (3) placed on a buried culvert top plate, a barrel base (2) arranged between the support (1) and the supporting rod (3) and a supporting plate (4) arranged between the barrel base (2) and the supporting rod (3), jacking and supporting of the buried culvert top plate are achieved through the supporting rod (3), and the supporting plate (4) is arranged between the barrel base (2) and the supporting rod (3) through the support (1). According to the concealed culvert side wall steel mold supporting device, installation with a concealed culvert side wall steel mold is achieved, insertion end fixing of the supporting rods (3) is achieved through the cylinder bases (2) and the supporting plates (4), distributed supporting of a concealed culvert top plate on the basis of single beam bodies installed on the concealed culvert side wall steel mold is achieved, and the technical problem that scaffolds are all used is solved; therefore, the construction efficiency of the water diversion buried culvert of the water conservancy project is improved.

The present application relates to a kind of spectrophotometer optical systems based on Offner structure, the spectrophotometer optical system includes the first converging portion of first lens and second lens, incident slit, concave mirror, convex reflection grating, exit slit, collimating lens, beam splitter, reference cell, plane mirror, the second converging portion of third lens and fourth lens, sample cell and the third converging portion of fifth lens and sixth lens.It can realize the material optical analysis or test of wide spectral range, and has the advantages of eliminating systematic errors such as light source fluctuation, environmental temperature change, solvent absorption, improving data reliability, when light source intensity decays or fluctuates with time, reference light path is compensated synchronously, avoid the problem that single-beam instrument needs frequent calibration.

The invention relates to a high-power green laser synthesis system based on a rotary frequency doubling crystal and multiple beams of infrared pulse laser, and belongs to the technical field of laser. The system comprises a multi-beam pulse infrared laser device, a frequency doubling crystal module, an annular rotating mechanism, a beam combining device, a continuous infrared laser device, a laser frequency regulation and control device and a rotating driving control system. The four beams of pulse infrared laser sources are symmetrically arranged along the circumferential edge, and periodically staggered output is realized through frequency regulation and control; the multiple frequency doubling crystals are distributed along the rotating circular ring at equal intervals and are sequentially aligned with laser pulses under driving of the rotating mechanism, and efficient frequency doubling is achieved. The center continuous infrared laser generates stable green light through frequency doubling of the fixed crystal. Finally, the green light generated by the multiple frequency doubling crystals and the central green light are integrated into a single light beam through a beam combining device to be output. According to the system, the power upper limit and the stability of green laser are remarkably improved through energy sharing of polycrystals, rotary dynamic matching and annular cooling, and the problems that existing green laser is limited in power and serious in heat effect are solved.

A system includes a set of satellites in orbits having transits across the sky. Two or more such transits are arranged to intersect to form a closed loop. Movement of the satellites along their respective transits causes, at each intersection of the closed loop, two or more satellites of the set of satellites to be distanced from each other in a manner that enables coverage of the two or more satellites by a single beam of an antenna that tracks one of the satellites.

This invention belongs to the field of three-degree-of-freedom pose measurement technology, and relates to a single-beam three-degree-of-freedom pose measurement method and device based on heterodyne interferometry and self-collimation. The measurement method includes the following steps: Step 1: A laser beam is split into two beams with a certain frequency difference; Step 2: In the self-collimation module, the laser is split into a first reference beam and a first beam; the first beam is modulated, reflected, and then modulated again to split into a first measurement beam and a second beam; the second beam is modulated to a first photoelectric detection module; Step 3: In the heterodyne interferometry optical path, the laser is split into a second reference beam and a third beam; the third beam is modulated, reflected, and then split into a second measurement beam and a fourth beam; the two reference beams are merged to form a first interference beam, and the two measurement beams are merged to form a second interference beam; Step 4: A circuit module acquires the angle and displacement; The measurement device includes an optomechanical module, a target under test, and a circuit module. Using the above scheme, displacement and angle are measured simultaneously.