417 results about "Optical beam deflection" patented technology

The invention relates to laser communication, in particular to a non-rotating type space laser communication system and method based on a liquid crystal phase regulation and control device, and aims to overcome the defects that in the prior art, a liquid crystal spatial light modulator is small in deflection angle and small in transmitting and receiving aperture, and the requirements for the capturing and tracking range and aperture of space laser communication are difficult to meet. The non-rotation type space laser communication system based on the liquid crystal phase regulation and control device comprises an adjustable phase delayer, a liquid crystal polarization grating module, a beam shrinking module, a liquid crystal space light modulator, a fine tracking galvanometer, a light splitting module, a coarse tracking module, a fine tracking module, a communication module and a data processing module, according to the communication method based on the system, light beam deflection is carried out through the adjustable phase delayer, the liquid crystal polarization grating module, the liquid crystal spatial light modulator and the fine tracking galvanometer, a traditional mechanical rotary table is replaced, and high-precision adjustment is achieved.

A Rydberg atom television receiver is disclosed. The receiver comprises a probe laser, a source polarizing beam displacer, a Rydberg atom receiver cell, receiver atoms, a detector polarizing beam displacer, a detector polarizing beam cube, a first photodiode, a second photodiode, a differential amplifier, a display, and a coupling laser. The receiver receives a modulated waveform imprinted on a radiofrequency carrier a displays a graphical representation corresponding to a modulation source.

2.1. The simultaneous acquisition of multiple images in the microscope should be made possible with greater flexibility. Furthermore, simultaneous acquisition should be made possible with less effort. 2.2. In a microscope (1) with a main beam splitter (22) and an adjustable beam deflection unit (21) for moving the illuminating light through the sample space (P), the beam deflection unit (21) is arranged optically between the light source (12) and the main beam splitter (22) for this purpose, so that the sample light reaches the sensor (28) away from the beam deflection unit (21), wherein both the illuminating light and the sample light pass through the same intermediate image (ZB).

The invention provides a laser welding method for an unequal-thickness heterogeneous hot-formed steel joint by cooperatively regulating and controlling annular light spots and light beam deflection. The method comprises the following steps: firstly, pretreating, clamping and positioning the PHS1500 and PHS2000 unequal-thickness ultrahigh-strength steel plates; then, the deflection angle of the light beam is adjusted to be within the range of-30 degrees to + 30 degrees; and finally, a galvanometer control system is used for driving a laser beam to conduct swing scanning in a circular track, and welding is completed under the condition that parameters such as laser power, welding speed, swing frequency, the ratio of swing amplitude to core ring energy and the like are set. According to the method, wire filling is not needed, the PHS1500 and PHS2000 butt welding joints can be effectively connected within the light beam deflection angle range of-30 degrees to + 30 degrees, efficient connection can be achieved within the light beam deflection angle range of-20 degrees to + 20 degrees, weld joint forming is effectively improved, weld joint grains are refined, and the problems of stress concentration and welding softening areas caused by different thicknesses and different strengths of plates are solved. And within the light beam deflection angle range of-20 degrees to + 20 degrees, the obtained joint welding seam is well formed, the tensile strength can reach 1400 MPa or above, and the method is suitable for manufacturing the tailor-welded structure of the unequal-thickness plates of the automobile body.

The invention relates to the technical field of laser welding, and particularly discloses a laser welding device for instrument processing, which adopts double stations with separated pre-clamping and processing, an operator can assemble and disassemble a workpiece at one station and simultaneously perform welding at the other station, so that the waiting time is obviously reduced, and the working efficiency is improved. A linkage clamping mechanism is used for ensuring that a workpiece is kept stable in the rotating switching process and is automatically converted into a high-locking-force state after reaching a machining station, the risk that the workpiece is turned over in traditional equipment is avoided, continuous, efficient and safe operation is achieved, and the device integrates the optical path adjusting and cleaning functions for the pollution problem of an optical system, so that the production efficiency is improved. When the laser angle is adjusted, the scraping strip is synchronously driven to remove pollutants on the light-transmitting plate, the maintenance period is prolonged, the stable welding quality is guaranteed, in addition, laser beam deflection is achieved through a worm and gear and a reflector structure, obstacles can be bypassed to weld hard-to-reach areas such as deep cavities and corners, the process of disassembling and reassembling is avoided, and the production integrity and efficiency are improved.

The invention provides a deformable mirror assembly comprising a deformable mirror body, the back of which is provided with a telescopic piezoelectric actuator comprising a plurality of linearly arranged actuating units; the cushion block is arranged on the back surface of the deformable mirror body; the control system is used for providing actuating alternating current voltage for the telescopic piezoelectric actuator, so that sinusoidal vibration of different actuating units adopts random amplitude and random phase; the maximum peak-valley amplitude, caused by sinusoidal vibration, of the mirror surface of the deformable mirror body overcomes the Rayleigh criterion, the periodicity of the spatial frequency is destroyed through the randomness of the phase of the actuating unit, and therefore homogenization of light beam speckles is achieved when the deformable mirror body is used for light beam deflection. The invention also provides a corresponding two-dimensional optical system. According to the deformable mirror assembly, the speckle uniformity in the imaging process is improved, and the influence of speckles is reduced.

An apparatus include a motor, a first scanner, and a second scanner. The first scanner is coupled to the motor, and the motor is configured to rotate the first scanner at a first angular velocity about a rotation axis to deflect a first beam incident in a third plane on the first scanner into a first plane different from the third plane. The second scanner is coupled to the motor, and the motor is configured to rotate the second scanner at a second angular velocity different from the first angular velocity about the rotation axis to deflect a second beam incident in the third plane on the second scanner into a second plane different from the third plane.

The invention discloses a surface plasmon resonance imaging system for expanding a dynamic range through a multi-mode optical path, and relates to the technical field of microscopic imaging, a laser outputs a monochromatic and linearly polarized continuous wave beam, a first dynamic beam deflection device performs dynamic angle deflection adjustment on the continuous wave beam, a prism is used for providing a total reflection interface, and a second dynamic beam deflection device is used for performing dynamic angle deflection adjustment on the continuous wave beam. Exciting an evanescent wave; a surface plasma resonance effect is generated through interaction of the SPR detection chip and evanescent waves, and sample characteristics are detected; the flow cell provides a sample flow channel, so that a sample is in full contact with the surface of the SPR detection chip; the second dynamic light beam deflection device cooperatively adjusts the propagation direction of reflected light on the surface of the SPR detection chip, and the imaging detection device captures a high-spatial-resolution SPR image formed by the reflected light and transmits the image to the upper computer in real time for processing and analysis. According to the invention, the change of the resonance angle can be tracked in real time, and high-sensitivity and high-resolution monitoring of the dynamic process of biomolecule interaction is realized.

2.1. To increase the resolution of quasi-confocal line scanning microscopes with a main beam splitter for coupling the illumination and detection beam paths, the "re-scan" method involves descanning the sample light in the detection beam path by the illuminating beam deflection unit. After descanning, the sample light is scanned again in the detection beam path by moving it across the sensor behind the confocal aperture by a second beam deflection unit in a direction transverse to the linear focus. To increase resolution in the longitudinal direction, the illumination line can be structured. This optical arrangement has the disadvantage of significant light losses due to the large number of optical interfaces that must be passed through. 2.2. A microscope in which the illuminating beam deflection unit is optically positioned between the light source and the main beam splitter, allowing the sample light to reach the sensor away from the illuminating beam deflection unit (non-descanned), is more light-sensitive and flexible. A control unit, in one operating mode, moves the sample light beam across the sensor using only the second beam deflection unit. Depending on the operating mode, synchronization with the first beam deflection unit may be provided. 2.3. Due to its high light sensitivity, the microscope is particularly suitable for fluorescence microscopy.

The invention discloses a moving target identification and tracking system based on an analog micromirror array (AMA), belongs to the technical field of photoelectric tracking and machine vision, and aims to solve the technical problems of slow response, large inertia and complex structure of a traditional mechanical tracking system. According to the technical scheme, an AMA composed of a plurality of MEMS micromirror units which can be independently controlled and have the static or quasi-static two-dimensional deflection capacity is adopted as a non-mechanical light beam deflection actuator, the AMA can be composed of micromirror arrays in various forms, digital image data are analyzed in real time to solve the target offset, and the non-mechanical light beam deflection actuator is obtained. And an instruction is generated to drive the AMA to deflect at a high speed so as to compensate the deflection, so that continuous and stable locking and tracking imaging of the moving target are realized. The system has the advantages of being high in response speed, high in tracking precision, free of mechanical inertia and compact in structure, supports flexible switching of various working modes such as wide-area scanning and long-distance tracking, and is high in application flexibility.

A wireless power transmitter for powering a remote receiver using a laser beam, the laser beam generator having current inputs and outputs electrically insulated from their surroundings, and each including a separate controlled gated switch. The transmitter has a beam adjustment element for switching the beam between a collimated beam for power transfer, and a more divergent beam for scanning, which is performed by a beam deflector. A detection system detect the presence of a receiver, and is used to ensure accurate beam impingement on the power receiving element. A controller senses when the beam is centered on the power receiving element, switches from the divergent scanning beam to the collimated beam, and instructs the beam generator to raise the power of the laser beam to a level for powering the receiver. The gate controller operates at a higher voltage than the other system control circuits.

The invention provides a liquid crystal optical phased array imaging system and a design method thereof, and belongs to the technical field of liquid crystal optical phased arrays. The system comprises a camera, a lens, a beam splitter prism, a liquid crystal spatial light modulator, a super lens and a computer, and is suitable for a visible light band. Non-mechanical light beam deflection is achieved through the liquid crystal spatial light modulator, angle amplification and dispersion compensation functions are achieved in combination with the super lens, and the problems that a traditional mechanical light beam deflection technology is large in size and short in service life are solved, and the problems that an existing liquid crystal optical phased array is small in angle range and imaging aliasing is caused by dispersion are solved; the superlens adopts a three-layer nanostructure unit stacking design, the upper layer is a dispersion compensation structure, the lower layer is an angle amplification structure, and large-angle imaging and efficient spectrum utilization are realized through phase modulation; the invention has the advantages of compact structure, small volume, low cost, high stability and the like, and is suitable for the fields of laser radar, space optical communication, infrared tracking and the like.

A multi-junction laser-diode module includes (a) a multi-junction laser diode having a plurality of laser junctions stacked in a vertical dimension parallel to the fast-axes of the laser beams emitted by the laser junctions, (b) a fast-axis cylindrical lens collimating each laser beam in the fast axis, whereby the laser beams emerge from the fast-axis cylindrical lens with mutually nonparallel propagation directions, (c) a transmissive beam-deflecting element that deflects the laser beams in the fast-axis dimension after the fast-axis cylindrical lens to make their propagation directions parallel, and (d) a slow-axis cylindrical lens configured to collimate each laser beam in the slow axis. The transmissive beam-deflecting element corrects for the propagation-direction discrepancy between the laser beams, in the fast-axis dimension, caused by fast-axis collimation. The multi-junction laser-diode module can thereby produce a laser beam bundle suitable for high-brightness fiber-coupling.

A stereotactic device for cutting hard tissue on the cranial bone using energetic radiation has a stereotactic frame (22) and a stereotactic bow (25) fastened to the stereotactic frame (22) by at least one rotary joint. A laser applicator (17) is attached to the stereotactic bow (25) and can be moved along the stereotactic bow (25) via a motorised drive (28´´), said bow also being able to be tilted on the stereotactic frame (22) via a motorised drive (28, 28´). The laser applicator (17) has a dynamic 2D beam deflection apparatus (11) for a processing laser beam (2), focusing optics (12) with an adjustable focal position and a measuring apparatus (6) or is connected thereto, by means of which the cutting depth and the remaining thickness of the cranial bone (15) in the kerf can be measured. The device permits a safe opening of the cranium which is vibration-free and silent for the patient.

The invention discloses an optical system distortion measuring device and method based on a rotary biprism, and belongs to the technical field of optical system measurement, a two-dimensional linear motion mechanism and a rotary biprism assembly are adopted to replace a multi-dimensional rotary table to achieve view field change, light beam translation and light beam deflection control, and motion errors of the multi-dimensional rotary table are avoided; the two-dimensional linear motion mechanism realizes the translational motion of the collimator, and the collimator does not need to be subjected to pitching state change, so that the safety risk caused by the pitching angle change of the collimator is avoided; the parallel light beam deflection control device has the advantages of being compact in structure, small in rotational inertia, capable of achieving large-angle deflection of large-aperture light beams and the like, and the measurement precision and reliability are improved.

The invention discloses a light scanning method, which comprises the following steps that: a first light deflection device deflects an incident light beam by a plurality of first deflection angles, and projects the deflected light beam to a polarization expanding device; the polarization expanding device amplifies the deflection angle of the deflected light beam in the corresponding deflection direction by a preset multiple, and projects the expanded light beam to the corresponding position of the second light deflection device; and the second light deflection device deflects the expanded light beam at a preset second deflection angle so as to project a scanning light beam. The light deflection angle can be continuously and finely adjusted within a larger angle range, and the structure of the light deflection device is miniaturized.

An optical switch comprising a set of input ports and a set of output ports, each input and output port configured to transport an optical signal having at least one component frequency channel. The switch comprises a first programmable deflection plane configured to deflect beams incident on it from the set of input ports to form a deflected array of beams, and a second programmable deflection plane configured to deflect beams incident on it towards the set of output ports. The switch also comprises a beam steering optical device positioned in the optical path between the first and second programmable deflection planes, configured to remap the deflected array of beams to form a remapped array of beams directed to the second programmable deflection plane, by changing the spatial positioning and / or orientation of each beam from the deflected array of beams in the remapped array of beams such that the spatial positioning and / or orientation of at least one beam of the deflected array of beams is changed differently to at least one other beam of the deflected array of beams.

The invention relates to the technical field of laser processing, and provides a dynamic focusing scanning system. The dynamic focusing scanning system comprises a dynamic focusing module, a light beam deflection module and a field lens focusing module which are sequentially arranged in the optical axis direction. The dynamic focusing module comprises a front convex lens group, a diaphragm and a rear convex lens group, the optical axis of the front convex lens group coincides with the optical axis of the rear convex lens group, and the center of the diaphragm is located on the optical axis of the front convex lens group; the front convex lens group is configured to focus the input collimated light to form a light spot, the diaphragm is located at a focus point of the front convex lens group, and the rear convex lens group is configured to expand a light beam passing through the diaphragm; the light beam deflection module is configured to deflect the light beam emitted from the rear convex lens group; the field lens focusing module is configured to focus the light beam emitted from the light beam deflection module to a focal plane. According to the invention, the diaphragm can be used for filtering the return light, so that the dynamic focusing scanning system is protected, and the damage to the dynamic focusing scanning system is reduced or avoided.

The invention relates to the technical field of laser radars, and discloses a laser radar beam scanning path optimization and energy efficiency management method based on an FPGA, and the method comprises the following steps: S1, collecting the point cloud data and obstacle distribution information of a target region in real time through an environment sensing module; s2, generating a dynamic scanning path based on space partition, and generating a self-adaptive spiral scanning path for avoiding obstacles; s3, executing multi-parameter collaborative energy efficiency adjustment, and dynamically matching the laser transmitting power, the receiver gain and the MEMS driving voltage; and S4, synchronously outputting the optimized scanning path and the energy efficiency instruction to a laser driving circuit and a light beam deflection controller through a hierarchical scheduling module of the FPGA. A detection area is divided into priority grids through an FPGA, a self-adaptive spiral scanning path is generated, a hardware-level sudden obstacle avoidance algorithm is utilized, the response time is shortened to be smaller than or equal to 5 ms, and the integrity of point cloud data is ensured.

The invention relates to the technical field of fast reflecting mirrors, in particular to a two-dimensional large-angle fast reflecting mirror device based on rigid support, which comprises a moving magnet type electromagnetic driving assembly and an eddy current sensor assembly which are arranged on the periphery of the central position in a base; the moving magnet type electromagnetic driving assembly drives the rigid supporting assembly to drive the reflector lens to deflect within a set angle, and the eddy current sensor assembly is used for detecting the deflection angle of the reflector lens. The rigid supporting assembly comprises a mirror holder, a supporting frame, a supporting long shaft and a supporting short shaft; the reflecting mirror lens is connected with the mirror holder, the mirror holder is arranged in the supporting frame through the supporting long shaft, and the supporting frame is connected with the base through the supporting short shaft; the mirror holder rotates in the first direction through the supporting long shaft and rotates in the second direction through the supporting short shaft. According to the invention, the rigid supporting assembly is driven by the moving magnet type electromagnetic driving assembly, so that the reflector lens deflects in two orthogonal directions around the supporting long axis and the supporting short axis, the limitation that the deflection angle of the existing reflector system is small is broken through, and two-dimensional large-angle and high-precision light beam deflection can be realized.

The invention provides a laser processing system and method and a computer readable storage medium, and belongs to the technical field of optics. The laser processing system comprises a controller, a laser, a light beam deflection assembly and a workpiece table. The light beam deflection assembly is located on an emergent light path of the laser and used for outputting laser to the workpiece table. The workpiece table is used for bearing workpieces and can drive the workpieces to move in the first direction and the second direction which are perpendicular to each other. The light beam deflection assembly comprises a light beam deflector and a rotating mirror, the rotating mirror is used for achieving scanning of the laser in the first direction, and the light beam deflector is used for adjusting the position of the laser in the second direction. As the laser processing system is provided with the light beam deflector used for adjusting the position of the laser in the second direction, the initial position of the target breadth in the second direction can be adjusted by controlling deflection of the light beam deflector before the target breadth is inscribed on the workpiece, and therefore the target breadth is inscribed on the workpiece. The technical problem that the target breadth and the breadth machined before are staggered in the second direction is solved.

A system for free-space optical coupling between a two-dimensional optical transmitter array and a two-dimensional optical receiver array using planar optical elements includes a transmitter array configured to emit one or more optical beams, a first planar optical element configured to receive the optical beams from the transmitter array and generate one or more intermediate optical beams, a first spacer disposed between the optical transmitter array and the first planar optical element, a receiver array, a second planar optical element configured to receive the intermediate optical beams and generate one or more output optical beams directed to the receiver array, and a second spacer disposed between the second planar optical element and the optical receiver array. The TX and RX portions of the optical coupling system can be used in a LiDAR system as a light emitting element (beam steerer) and a detector, respectively. The planar optical element is configured to provide a wide field of view for the LiDAR.

The invention relates to the technical field of laser drilling, in particular to a real-time monitoring acousto-optic deflection laser drilling system, method, equipment and medium, and the system comprises a laser light source, a power monitoring module, an acousto-optic deflector, a galvanometer, a three-light coaxial device and a control system. The power monitoring module collects a power signal of a machining laser beam in real time, and the control system compares the power signal with a preset threshold value and dynamically adjusts laser output parameters. The three-light coaxial device carries out in-situ imaging on the surface of a workpiece while transmitting laser to obtain a drilling morphology image, and a control system recognizes defects such as fused heap or hole shape distortion based on the image and dynamically adjusts laser machining parameters or light beam deflection parameters. According to the system, through a double-closed-loop feedback mechanism, synchronous regulation and control of laser energy and machining morphology are achieved, and the consistency and precision of micropore machining are remarkably improved.

A head-up display includes an image-generating system, and a projecting optical system that includes a common mirror and a folding mirror. The image-generating system is configured to emit a first source light beam and a second source light beam that pass through an image plane. The projecting system also includes an element for redirecting beams by diffraction that deflects the first source light beam downstream of the image plane into a first intermediate beam directed toward the common mirror. The folding mirror is configured to reflect the second source light beam downstream of the image plane into a second intermediate beam directed toward the common mirror. The common mirror is configured to intercept and project the first intermediate beam and the second intermediate beam to form a first virtual image at a first projection distance and a second virtual image at a second projection distance.

Projection device for generating and displaying an image in an observation field intended for the display of information and images, comprising at least one light source (1) for emitting at least one light beam (2), a microscanner (3) for variably deflecting the at least one light beam (2) in the direction of the observation field, wherein the microscanner (3) has at least one axis of rotation for a rotary oscillation movement for deflecting the at least one light beam (2), a waveguide (4) which is arranged downstream of the microscanner (3) in a beam path of the at least one light beam (2), and a concave mirror (5) located between the at least one light source (1) and the microscanner (3) in the beam path of the light beam (2), which is designed to collimate the at least one light beam (2).

The invention provides a microscope with rapid quasi-confocal detection. The simultaneous acquisition of multiple images in a microscope should be possible with greater flexibility. In addition, simultaneous acquisition should be made possible with less effort. In a microscope (1) having a main beam splitter (22) and an adjustable beam deflection unit (21) for moving illumination light through a sample space (P), the beam deflection unit (21) is optically arranged for this purpose between a light source (12) and the main beam splitter (22) such that sample light away from the beam deflection unit (21) passes to a sensor (28), both the illumination light and the sample light passing through the same intermediate image (ZB). The invention also provides a method for scanning image acquisition by means of a scanning microscope.

A LIDAR apparatus for scanning a scene, comprising a transmitter stage, a receiver stage, a beam-steering engine configured to steer the light beam received from the transmitter stage in different directions to scan at least a portion of the scene, the beam-steering engine being responsive to steering commands to produce corresponding deflections of the light beam and an operation monitor for monitoring a beam-steering function of the beam-steering engine.

The utility model provides a laser diagnosis device comprising a first laser light source used for emitting diagnosis laser; the light deflector is connected with the output end of the first laser light source and is used for carrying out light beam deflection at a specific angle on the diagnosis laser; the optical fiber coupler is arranged at the output end of the optical deflector and is used for coupling the diagnosis laser with the deflected light beam into one optical fiber branch of the optical fiber array; the optical fiber array is connected with the optical fiber coupler and is used for transmitting the diagnosis laser coupled by the optical fiber coupler to a focusing microlens of the focusing microlens array; wherein the optical fiber branches in the optical fiber array are mutually independent; the focusing micro-lens array is connected with the optical fiber array and is used for focusing the diagnosis laser on the diseased tissue through a focusing micro-lens to generate a laser signal with tissue characteristic information; wherein each focusing microlens in the focusing microlens array is correspondingly connected with one optical fiber branch of the optical fiber array; the device is compact in structure, easy and convenient to operate and capable of conducting refined diagnosis on diseased tissue.

The invention is suitable for the technical field of laser processing, and provides a laser processing method, a controller, laser processing equipment and a circuit board. The laser processing method comprises the following steps: acquiring a target laser movement track of a to-be-processed workpiece; decomposing the target laser motion track into a first motion component of a first light beam deflection mechanism and a second motion component of a second light beam deflection mechanism; the first target speed of the first light beam deflection mechanism and the initial speed of the second light beam deflection mechanism when the second light beam deflection mechanism enters the second motion component are determined according to the processing point location distribution of the first motion component, and the initial speed is larger than 0; and controlling the first light beam deflection mechanism to execute the first motion component at the first target speed, and controlling the second light beam deflection mechanism to start speed change from the initial speed to a second target speed so as to execute the second motion component. According to the embodiment of the invention, the laser processing efficiency can be improved.

The application discloses a long-focus lens module and electronic equipment, the long-focus lens module comprises an imaging lens and a light beam deflection device; the light beam deflection device is arranged in the imaging light path of the imaging lens and is used for optically compensating a residual offset a still existing after compensation by the anti-shake module; the light beam deflection device comprises an angle or face shape adjustable transmission type optical element; the transmission type optical element is configured to switch from an initial state to a deflection state, and an image height change is caused by angle deflection or face shape change, so that an optical compensation amount of size-a is introduced to offset the residual offset a; in the deflection state, the relationship between the center field of view image height change DeltaIHc, the edge field of view image height change DeltaIHe and the lens magnification x satisfies the relationship formula: 0.07 <= DeltaIHe / DeltaIHc / x <= 0.4. The application introduces the image height change by angle deflection or face shape change of the transmission type optical element, so that the image height change corresponds to the change caused by the body shake, thereby weakening the influence of the body shake on the picture.