113results about How to "Large deflection angle" patented technology

The invention discloses an outer rotor magnetic levitation conical spherical gyro flywheel. The outer rotor magnetic levitation conical spherical gyro flywheel mainly comprises a static part and a rotor part, wherein the static part comprises an upper sealing cover, a middle gyro case, a lower sealing cover, a sealing ring, an upper gyro case, a lower gyro case, a motor component stator, an Lorentz force magnetic bearing stator, an axial displacement sensor component, a radial displacement sensor component, a mandrel, a protective bearing and a radial conical spherical magnetic bearing stator component. The rotor part comprises a gyro outer turntable component and a protective bearing cover. The outer rotor magnetic levitation conical spherical gyro flywheel disclosed by the invention adopts a spherical shell-shaped magnetic air gap structure and has the advantages of large inertia, easy control, large deflection angle, high torque accuracy and the like.

The invention is applied in the field of liquid crystal display, and provides a three-dimensional (3D) image display control method and a 3D image display control system. The method comprises the following steps of: receiving a 3D image signal from a 3D image signal source, and pre-processing the 3D image signal to obtain a first frame sequence; performing frame processing on the first frame sequence to obtain a second frame sequence consisting of a gray frame GL, a left-eye image L'', the gray frame GR and a right-eye image R'' which are continuous, wherein the frame processing comprises frequency multiplication, black frame interpolation and gray frame interpolation; and transmitting the second frame sequence to a liquid crystal screen for display, simultaneously generating a shutter glasses control signal and a backlight switching control signal according to a synchronizing signal of the second frame sequence, controlling the switching state of shutter glasses by using the shutter glasses control signal, and controlling the switching state of a backlight source of the liquid crystal display screen by using the backlight switching control signal. The embodiment of the invention fulfills the aim of definitely displaying a 3D image by performing the pre-processing and the frame processing on the 3D image.

The invention discloses a direction-controllable laser device system and belongs to the technical field of laser devices. The direction-controllable laser device system comprises a laser source, a waveguide and a phase control system, wherein the laser source, the waveguide and the phase control system are sequentially connected. The laser source comprises a semi-conductor laser device array (1) and a microlens array (2), wherein the semi-conductor laser device array supplies a power source for the direction-controllable laser device system, each luminous unit is plated with an antireflection film, and light emitted by the luminous units of the semi-conductor laser device array is shaped and coupled into optical fibers through the microlens array. The waveguide is an optical fiber tapering array which is developed aiming at the direction-controllable laser device system. The optical fiber tapering array comprises an alignment section I, a tapering bundling coupling section II and a tapering rearrangement section III, wherein the alignment section I, the tapering bundling coupling section II and the tapering rearrangement section III are sequentially connected. The phase control system comprises a titanium diffusion niobic acid lithium integrated optical waveguide phase shifter. The direction-controllable laser device system enables the angle of deflection to be more accurate and adjustable, and stability of the direction-adjustable laser device system also can be improved.

The invention relates to a two-dimensional large-angle rapid deflection reflector. The reflector comprises a reflecting mirror assembly, a supporting assembly, a driving assembly, a sensor assembly and a base. The supporting assembly is a self-made ball bearing and can freely rotate around the sphere center of the supporting assembly; and the supporting assembly is pre-tightened through a conical spiral spring, so that the supporting assembly can be kept at an initial zero angle position without the driving of an external force. According to the driving assembly, four voice coil motors are adopted as driving components; the sphere centers of the voice coil motors are overlapped with the sphere center of the supporting assembly; the voice coil motors push the supporting assembly to perform two-dimensional rotation; and gaps between the magnetic steel and coils of the voice coil motors are always constant, and therefore, the magnetic steel will not collide with the coils, and relatively large deflection angles can be generated. The sphere centers of the supporting assembly and the driving assembly are located on the reflection surface of a plane reflecting mirror, so that the two mutually perpendicular deflection axes of the reflecting mirror are located on the surface of the reflecting mirror. In the fast deflecting process of the reflecting mirror, the translational movement of a reflection light beam caused by a condition that the deflection axes of a reflecting mirror are not overlapped with the surface of the reflecting mirror can be eliminated, and the control precision of the light beam is improved.

The invention discloses a vertical-cavity surface-emitting laser radar light source of a non-periodic high-contrast grating integrated with rapid angle scanning, and belongs to the technical field ofsemiconductor photoelectrons. The problems that according to a VCSEL, the light beam deflection angle is small, the implementation angle is monotonous and scanning cannot be conducted are solved. Thevertical-cavity surface-emitting laser radar light source comprises a multiple quantum well active gain layer, an oxidized electric current restrictive pore layer and a P-surface distributed Bragg reflector layer from bottom to top in sequence, the multiple quantum well active gain layer, the oxidized electric current restrictive pore layer and the P-surface distributed Bragg reflector layer formfirst mesas, second mesas with air layers in the middle and the diameters smaller than those of the first mesas are arranged on the first mesas, non-periodic high-contrast grating layers are arrangedon the second mesas, and P-surface electrodes are arranged on the outer sides of the first mesas and the second mesas. By means of the vertical-cavity surface-emitting laser radar light source, wide-angle wide view field detection and scanning can be achieved, the complexity of the laser radar light source system is reduced, and requirements for the laser radar light source are met.

The invention discloses a seven-degree-of-freedom transfer robot provided with a ball screw movable platform and belongs to the technical field of robots. The robot comprises a machine frame, an upper movable platform, a lower movable platform, a ball screw, a synchronous belt and three branches. Each branch comprises a large driving arm, a small driving arm, a driving arm connecting rod, a lining frame and a driven arm, wherein the upper end of the driven arm is connected with the lower end of the lining frame; the lower end of the driven arm is connected with the upper movable platform; a screw nut is fixedly connected to the upper movable platform; a synchronous pulley is installed at the upper end of a screw shaft; and the lower end of the screw shaft is connected with the lower movable platform. The robot is based on a six-axis transfer parallel robot, one degree of freedom is additionally added by transforming and upgrading the movable platforms, the lower movable platform deflects by a certain angle based on the upper movable platform, thus, the deflection angle of a tail end execution mechanism is increased, and the problem that the robot is limited in the actual motion process, and accordingly the deflection angle of the tail end execution mechanism is small is solved. The robot provided by the invention is larger in application range and better meets the practical requirements.

A portable temporary righting device for inclination of a power transmission line pole and tower comprises a rack, a line collecting reel is installed on one side of the rack, a rope is wound around the line collecting reel, a line clamping groove is formed in one end of the line collecting reel, and a ratchet wheel mechanism is arranged at the other end of the line collecting reel, wherein the ratchet wheel mechanism and the line collecting reel coaxially rotate. Pawls and reversing deflector rods are arranged on the rack. A guiding pulley is installed on the other side of the rack, a conical shaft and big gears are installed on the rack and rotate coaxially, and the big gears and a gear set are assembled in a meshed mode. A balance weight disc connected with the gear set is installed on the rack and connected with a pedal through a connecting rod, and the balance weight disc, the connecting rod and the pedal form a crank and rocker mechanism. The portable temporary righting device can temporarily right the pole and tower and prepare time for permanent reinforcement of the pole and tower; operation can be achieved only through manpower, and the portable temporary righting device is applied to finding inclination of the pole and tower in time and temporarily righting the pole and tower in time, and also suitable for pole and tower emergency maintenance engineering in remote mountain regions or pole and tower emergency maintenance engineering where the pole and tower in inclination can not be temporarily righted unless depending on labor.

The invention discloses a trapezoid spherical surface deflection lorentz force magnetic bearing composed of a rotor system and a stator system. The rotor system mainly comprises an outer flux sleeve, an outer magnetism isolation ring, outer upper trapezoid spherical surface magnetic steel, outer lower trapezoid spherical surface magnetic steel, an outer upper paramagnetic sleeve, an outer lower paramagnetic sleeve, an outer upper trapezoid spherical surface magnetic steel lock nut, an outer lower trapezoid spherical surface magnetic steel lock nut, a rotary disc, an outer assembly lock nut, an inner flux sleeve, an inner magnetism isolation ring, inner upper trapezoid spherical surface magnetic steel, inner lower trapezoid spherical surface magnetic steel, an inner upper paramagnetic sleeve, an inner lower paramagnetic sleeve, an inner upper trapezoid spherical surface magnetic steel lock nut, an inner lower trapezoid spherical surface magnetic steel lock nut and an inner assembly nut. The stator assembly mainly comprises a stator framework, an aluminum base plate, a winding and an epoxy resin adhesive. The trapezoid spherical surface structure is adopted in the magnetic steel, the fringe effect of the magnetic field is weakened, the magnetic flux density uniformity is improved, the strength of the magnetic field is improved, and large-angle deflection is facilitated; and in addition, the magnetic flux density fluctuation of the magnetic steel due to splicing gaps is eliminated through the paramagnetic sleeves, and high-precision torque control is facilitated.

The invention provides a display substrate, a display panel and a display device. The display substrate includes a plurality of sub-pixel areas. Each sub-pixel area includes a shading area and openingareas on the two sides. A first transparent electrode is arranged in each sub-pixel area. Each first transparent electrode includes a first electrode unit located in the corresponding shading area. Each first electrode unit includes a plurality of first sub-electrodes. A first slit is arranged between the adjacent first sub-electrodes. The width of the first slits progressively increases in a direction from the centers of the shading areas to the sides where the shading areas and the opening areas are connected to each other. Liquid crystals corresponding to the small slits at the central areas of the shading areas can form large liquid crystal prism curvature, has large deflection angles to light and large light-emitting angles, and ensures light-emitting efficiency. Liquid crystals corresponding to the wide slits at the edge areas can form small liquid crystal prism curvature, has small deflection angles to light and small light-emitting angles, and ensures that the light does not be emitted out of the adjacent sub-pixel areas. The display substrate, the display panel and the display device solve the problem of cross-color.

The invention discloses an electric spark wire cutting machine. According to the technical scheme, the electric spark wire cutting machine is characterized by comprising a workpiece installing base for installing a workpiece, a base, a sliding base which is in horizontal sliding connection with the base, and a cutting wire arranged on the sliding base and used for cutting the workpiece. The sliding base is provided with a drive mechanism for driving a cutting wire to move and achieving cutting of the workpiece, and a bevel cutting mechanism for enabling the cutting wire to be in the inclined state and achieving bevel cutting. The purpose that the cutting wire is inclined within the space range and the workpeice is cut obliquely is achieved. Meanwhile, the problem that equipment is abradeddue to the fact that the cutting wire is pulled hard is effectively avoided.

The invention discloses a double-period composite liquid crystal polarization grating structure and a preparation method thereof, belongs to the technical field of non-mechanical optical beam deflection in an active electro-optical system, and mainly aims at problems of serious energy loss, complex structure and the like of a conventional liquid crystal polarization grating, which are caused by acase that incident light needs to be converted into circular polarized light. The double-period composite liquid crystal polarization grating is disclosed on the basis of in-depth understanding on a polarization state modulation type optical component and has excellent response to linearly polarized incident light, and an optical beam is deflected to the plus 1 level and the minus 1 level under the diffraction efficiency of nearly 100% only by controlling a polarization direction of the linearly polarized incident light. Compared to the conventional liquid crystal polarization grating implemented before, the double-period composite liquid crystal polarization grating structure is simpler in the aspects of system control and assembly and judgment and is obviously promoted in the aspects ofthe energy utilization rate and the like.

The embodiment of the invention discloses a display assembly and a display device, relates to the technical field of display, and aims to solve the problem that the liquid crystal efficiency in an auxiliary liquid crystal box is reduced. The display assembly comprises a first underlayer substrate, a second underlayer substrate and a second liquid crystal layer, wherein the first underlayer substrate and the second underlayer substrate are oppositely arranged, and the second liquid crystal layer is located between the first underlayer substrate and the second underlayer substrate; a third underlayer substrate located on the side, away from the second underlayer substrate, of the first underlayer substrate; a first liquid crystal layer located between the first underlayer substrate and the third underlayer substrate; a first pixel circuit layer arranged on one side, close to the first liquid crystal layer, of the first underlayer substrate; a second pixel circuit layer arranged on one side, close to the second liquid crystal layer, of the second underlayer substrate; a polarizing device arranged on one side, far away from the second liquid crystal layer, of the second pixel circuit layer; and a first metal wire grid polaroid arranged between the first substrate and the first pixel circuit layer.

The invention relates to a micro electromechanical device (1') for tilting a body (2) in two degrees of freedom comprising a carrier element (3) and a membrane (4), the body (2) being connected via the membrane (4) to the carrier element (3), wherein the body (2) and the carrier element (3) each comprise at least one electrode (5,6). The body (2) is tilted by means of electrostatic forces (7) between the at least one electrode (5) of the body (2) and the at least one electrode (6) of the carrier element (3) by an application of a voltage (V1,V2) to said electrodes (5,6) from a voltage source.

A rubber pad for coil springs in series comprises a metallic top plate, an elastic rubber body and a metallic base plate from top to bottom, wherein a metallic ring is fixed to the center of the top surface of the metallic top plate and is used for positioning the coil springs; the portion, connected to the elastic rubber body, of the bottom surface of the metallic top plate is an upper arc surface which is upwards concave; the portion, connected to the elastic rubber body, of the top surface of the metallic base plate is a lower arc surface which is upwards convex; the upper arc surface and the lower arc surface are coaxial arc surfaces arranged along the horizontal lengthwise direction of the rubber pad; the axial direction of the upper arc surface and the lower arc surface is in accordance with the horizontal widthwise direction of the rubber pad; and the perpendicular bisectors of the upper arc surface and the lower arc surface and the perpendicular bisector of the rubber pad coincide. The rubber pad for the coil springs in series of the invention is connected with the coil springs in series to form a composite spring system to meet the dynamics requirements of locomotive vehicles and prolong the service life of the coil springs. The invention also provides a method for adjusting the stiffness of the rubber pad for the coil springs in series.

The invention relates to a two-degree-of-freedom high-speed parallel scanning platform and a perpendicularity error calibration method thereof. The two-degree-of-freedom high-speed parallel scanning platform comprises a shell, and a linear driving mechanism, a reflector shaft mechanism, a joint bearing and a phase-sensitive detector (PSD) position sensor which are arranged in the shell. The two-degree-of-freedom high-speed parallel scanning platform provided by the embodiment has a single reflector structure, the scanning operation can be finished through one-step reflection only, and the error amplification effect brought by the double-mirror reflection is avoided; meanwhile, by adoption of a two-input two-output structure, the two-degree-of-freedom high-speed parallel scanning platform is easily controlled compared with the prior art; by adoption of a joint bearing structure, the scanning platform can have high rigidity and a large deflection angle; and because the two-dimensional PSD position sensor serves as a feedback device of the normal position of a reflector, a full closed loop is realized, and the high precision can be achieved. The two-degree-of-freedom high-speed parallel scanning platform has the characteristics of high precision, high rigidity and high bearing capacity.

The invention provides an array substrate, a display device and a driving method, and relates to the field of the display technology. The array substrate comprises an N scanning signal line, an N+1 scanning signal line, an M data signal line, a pixel unit, a first switch unit, a second switch unit and a third switch unit; the pixel unit comprises first sub-pixels and second sub-pixels; a control end of the first switch unit is electrically connected with the N scanning signal line, an input end of the first switch unit is electrically connected with the M data signal line, and an output end of the first switch unit is electrically connected with first pixel electrodes; a control end of the second switch unit is electrically connected with the N scanning signal line, an input end of the second switch unit is electrically connected with the M data signal line, and an output end of the second switch unit is electrically connected with second pixel electrodes; and a control end of the third switch unit is electrically connected with the N+1 scanning signal line, an input end of the third switch unit provides input signals, and an output end of the third switch unit is electrically connected with the second pixel electrodes. The array substrate, the display device and the driving method have the advantage that a visual angle of a liquid crystal display can be increased. The invention is applicable to designing and manufacturing display devices.

The invention relates to a scanning device, a scanning method thereof, and a laser radar. The scanning device comprises a first scanning unit and a second scanning unit; the first scanning unit is suitable for making the transmission direction of an incident light beam undergo first reflection so that the incident light beam can form an outgoing light beam; the first scanning unit changes the deflection angle of the first deflection by means of rotating or swinging; the second scanning unit is located in the optical path of at least one of the incident light beam and the outgoing light beam; and when the incident light beam or the outgoing light beam is transmitted through the second scanning unit, the second scanning unit makes the propagation direction of the transmitted light beam undergo second propagation based on an electro-optical effect. The scanning device can not only realize delay angle compensation, but also effectively shorten time for single detection, effectively improvescanning frequency, and is conductive to realizing the balance between high scanning frequency and high coherence efficiency.

Disclosed is ammunition with a head capable of deflecting and based on a smart material driver. The ammunition with the head capable of deflecting and based on the smart material driver comprises an ammunition head, an ammunition body, a smart material driver and a positioning system. The main body part of the ammunition is connected with a spherical protrusion of the surface on the upper end of the ammunition body through a spherical groove at the bottom of the ammunition head; four guide grooves are formed at the bottom of the ammunition head, wherein the guide grooves penetrate through the center of the circle of the ammunition head and are communicated with the spherical groove; sealing pins, springs and rolling balls are placed in the guide grooves to fasten connecting portions; under the impact of certain electrical signals, the smart material driver is deformed through information fed back by the positioning system to put the ammunition head to deflect, and therefore changing of motion locus of the ammunition is achieved. The ammunition with the head capable of deflecting and based on the smart material driver is large in deflection angle and is finally wide in attack ranges, reduces consumption of smart materials, saves space capable of placing a microprocessor and a small-size power supply, is compact in the whole structure, and therefore achieves microminiaturization, high accuracy and low energy consumption of independent and self-adaptation attack ammunition.

The invention discloses a displayer using ferroelectric liquid crystals. The displayer using ferroelectric liquid crystals comprises a backlight module, a first substrate, a plurality of long-strip-shaped first electrodes, a second substrate, a liquid crystal layer and a deflection layer. Light emitted by the backlight module deflect relative to the surface of the backlight module. The first substrate is arranged on the backlight module, and a first polarizing plate is arranged on the upper side face of the first substrate. The long-strip-shaped first electrodes are parallel with one another and arranged on the first substrate in a coplanar mode. The second substrate is arranged on the first substrate and the first electrodes, a second polarizing plate is arranged on the lower side face of the second substrate, and the absorption axis of the first polarizing plate and the absorption axis of the second polarizing plate are perpendicular to each other. The liquid crystal layer is composed of the ferroelectric liquid crystals and arranged between the first substrate and the second substrate, and the ferroelectric liquid crystals are perpendicularly arranged on the first substrate in a matched mode. The deflection layer is arranged on the second substrate and used for deflecting the light which is emitted by the backlight module and affected by the liquid crystal layer to the direction perpendicular to the surface of the second substrate.

The invention provides a projection device, wherein the projection device comprises a light source, three digital micromirror devices and a projection lens. The light source is used to emit light to the three digital micromirror devices. Each of the digital micromirror devices comprises a plurality of micromirrors. The projection lens is used to project light to a projection screen. Each of the micromirrors is used to selectively reflect light to the projection lens. Each of the digital micromirror devices is provided with a condenser lens, wherein each of the condenser lenses is located between the corresponding digital micromirror device and the projection lens. In the projection device provided in the invention, light beams reflected by the micromirrors are narrowed after focused by the condenser lenses, such that the volume of the projection lens can be reduced and projection accuracy of the reflected light can be enhanced, thereby projection picture quality is improved.

The invention discloses a cutting knife guard plate assembly, an anastomat and a steering control method. The cutting knife guard plate assembly comprises two cutting knife guard plates which are positioned on two sides of a central axis and have two opposite arc-shaped structures with corresponding recessed inner surfaces to form space allowing a cutter handle of the cutting knife assembly to move along the central axis and / or deflect relative to the central axis; and the two cutting knife guard plates respectively deflect relative to the central axis when one cutting knife guard plate moves toward the near end of the anastomat and the other cutting knife guard plate moves toward the far end of the anastomat, the knife handle is bent, and the part, protruding toward one side due to bending, of the knife handle is attached to the inner surface of the cutting knife protection plate on the corresponding side. Compared with an existing anastomat, the anastomat provided by the invention has the advantages that the rotating angle is larger, and the anastomat is more stable during deflection.

The invention relates to the technical field of MEMS light modulators, in particular to an MEMS blazed grating light modulator and an array. The shutter type MEMS large-rotation-corner adjustable blazed grating light modulator comprises a silicon substrate, an insulating layer, a movable frame, flexible beams, a grating mirror plane, double-layer comb tooth drive structures, an elastic cantilever beam, a bias voltage exerting device and a plurality of columns, wherein the insulating layer, the movable frame, the flexible beams, the grating mirror plane, the double-layer comb tooth drive structures, the elastic cantilever beam, the bias voltage exerting device and the columns are arranged on the silicon substrate. One side of the grating mirror plane is fixed to the surface of the substrate through supporting beams and two of the columns, and the other side of the grating mirror plane is connected with the movable frame through a deformation beam and driven by the double-layer comb tooth drive structures. The bias voltage exerting device can exert drive voltages at different levels and different frequencies between movable teeth and fixed teeth, and therefore the movable teeth can deflect and move to drive the movable frame, and the movable frame pulls the grating mirror plane to defect through the deformation beam. Due to the structure, an MEMS blazed grating has the advantages of being large in rotation angle, adjustable in continuous analog, good in controllable capacity, high in diffraction efficiency, high in tuning efficiency and capable of preventing adhesion failure.

The invention provides a vertical support stress uniform distribution device for building reinforcement engineering, and relates to the technical field of building construction. The device comprises a lower mounting seat; wherein lower mounting seat is mounted on a base plane through expansion bolts; a supporting body which is connected to the upper end face of the lower mounting base in a fastened mode through an adjustable fastening assembly; a protection assembly which is installed at the top of the supporting body, and the protection assembly is located on the outer side of the stress uniform distribution core block; and an auxiliary supporting assembly which is arranged at the top of the supporting main body. The vertical support stress uniform distribution device can effectively protect a matching surface, guarantees good angle adjusting capacity, can observe and monitor the deflection condition of an upper mounting seat, has good supporting capacity and adjusting capacity, is convenient to use and simple to operate, has higher working stability and practicability, and solves the problems that a traditional supporting device cannot well protect the spherical matching surface, the deflection condition of the support is difficult to effectively observe and monitor, so that the deflection of the support is too large.

A microactuator arrangement for the deflection of electromagnetic radiation, with a mirror plate which is suspended on a drive frame in a movable manner about a first rotation axis via spring elements, wherein the drive frame is suspended on a chip frame in a movable manner about a second rotation axis via spring elements, wherein the drive frame is not closed and comprises a recess adjacent to the mirror plate and wherein the chip frame at least in the region of the recess of the drive frame is not closed, in a manner such that a deflected and / or incident beam is not inhibited by the drive frame and the chip frame.

The invention discloses a movable platform mechanism with a ball screw connected with a gear and a rack in series, and belongs to the technical field of robots. A motor support is arranged in the center of an upper movable platform. A driving device is installed on the motor support. One synchronous pulley is installed at the end of a motor shaft, and the other synchronous pulley is connected with the inner circle of a screw nut. The two synchronous pulleys are matched with a synchronous belt. The screw nut is fixed to the upper movable platform and matched with a screw. The lower end of the screw is fixedly connected with an end-effector. The lower end of the end-effector is connected with a screw connection rod through a first hooke joint. The lower end of the screw connection rod is connected with a gear and rack mechanism. The upper end of the rack is connected with the screw connection rod. The lower end of the rack is matched with the gear. According to the movable platform mechanism, a traditional single movable platform of a parallel robot is improved, accordingly, the deflection angle of the end-effector is increased, the problem that the deflection angle of the end-effector is small due to the fact that the parallel robot is limited in the actual moving process is solved, thus, the application range of the robot is widened, and the requirements of plants are better met.

The invention relates to the field of agricultural machinery, in particular to a lycium chinense picking vehicle, which comprises a picking vehicle body, a branch supporting device, a picking device, a collecting plate, a conveying system, a winnowing machine and a loading box. The branch supporting device is arranged at the head part of the picking vehicle body and used for guiding branches at the head part of the picking vehicle body in the driving process of the picking vehicle body. The picking device can continuously harvest fruit-bearing branches on one side of a row of plants at a time by arranging a vibration comb brush capable of continuously performing harvesting operation, and a vibration generator serves as a vibration source to provide excitation force, so that high-frequency vibration in the axial direction and the horizontal direction is generated. According to the lycium chinense picking vehicle, the full picking rate can be improved by reasonably controlling and adjusting the amplitude and frequency of the vibration comb brush device, the vibrating frequency is accurately controlled to adapt to picking of lycium chinense of different varieties or different maturity degrees, the damage rate and the impurity rate are reduced, the picking device can rotate after touching branches, and therefore, resistance generated by the branches is resolved, and continuous harvesting is achieved.

The invention discloses a photoresponsive polymer optical fiber and a preparation method and application thereof, and belongs to the field of optical fiber communication and sensing. According to thephotoresponsive polymer optical fiber, a uniaxially oriented liquid crystal elastomer is used as an inner-layer fiber core, a liquid crystal elastomer doped with a photoresponsive group is used as anouter cladding, and the outer cladding can sense an optical signal transmitted in the inner-layer fiber core and make a volume deformation response to a specific wavelength so as to change an overalloptical path. The deflection degree of the optical path is influenced by optical fiber structure parameters, transmission light wavelength and intensity. The photoresponsive polymer optical fiber canbe used for preparing a self-recognition mobile optical fiber type optical switch, and is applied to the fields of sensing, detection, filtering and the like.