817 results about "Laser beams" patented technology

DEPCT68 The welding method disclosed here includes a procedure for applying laser light for... Inspect the workpiece at an angle while varying the amount of light dispersion. The process of determining the correction value for the amount of light scattering based on intensity. Laser backlight for inspection and workpiece welding process. Laser light is applied to the workpiece so that the amount of light scattering is adjusted. The correction value is zero in the welding method as disclosed, laser light for inspection. It is scanned in a direction approaching the laser emission point for time-based monitoring. The amount of light scattering will be zero during the laser application process for... Inspect the workpiece. From the results, determine the welding method, welding system, and possible adjustments. Improvements to the accuracy of laser beam focusing control for welding were provided;

The invention relates to a laser deep penetration welding method for producing a metallurgical joint of at least two oxide-coated metallic workpieces (1, 2) by means of a laser beam unit (11) which is controlled for laser beam shaping of a laser beam (10) such that a temperature gradient (gradT) is generated in the liquid melt of the weld seam (4') to form a broad-lens-shaped weld seam (4'), which results in a broad-lens-shaped weld seam (4') with a contour angle (α) relative to the joining zone (3). F ) of less than 80 degrees, in particular of less than or equal to 75 degrees and a width-to-depth ratio between 1:0.8 and 1:1.2.

This invention relates to the field of semiconductor lasers, and more particularly to a multi-chip ring array vertical cavity surface-emitting laser (VCSEL), comprising: a gain chip array, a beam-splitting axial conical lens group, a beam-combining axial conical lens group, and an output coupling mirror arranged coaxially. The gain chip array includes N (N>1) VECSEL gain chips arranged in M ​​concentric rings (M>1). The beam-splitting axial conical lens group includes M beam-splitting axial conical lenses. The beam-combining axial conical lens group includes M beam-combining axial conical lenses. The N laser beams first pass through the beam-splitting axial conical lens group to generate M-order Bessel beams, and then pass through the beam-combining axial conical lens group to combine into a resonant beam. This resonant beam resonates within the coaxial resonant cavity formed by the output coupling mirror and the gain chip array, resulting in the output laser beam. This invention employs a modular cascaded structure of axial conical lenses, realizing the parallel superposition of multiple rings of chips, fully utilizing the radial spatial dimension, and improving chip integration density.

The application provides a laser annealing method and system, and relates to the field of integrated circuit manufacturing. The method comprises the following steps: a first laser module is used to emit a first laser beam with a first wavelength to a wafer, and a second laser module is used to emit a second laser beam with a second wavelength to the wafer; the reflectivity of the wafer to the laser beams with the first wavelength and the second wavelength is measured, and a reflectivity ratio is obtained; the annealing temperature of the wafer is measured; according to the measured annealing temperature and a target annealing temperature, a target total power is determined, and according to the reflectivity ratio and the target total power, the power of the first laser module and the second laser module is adjusted. According to the method, the reflectivity of the wafer to the laser beams with the two wavelengths is complementary to a certain extent, so that the pattern effect can be improved, and the annealing temperature uniformity of the wafer is improved. According to the measurement results of the annealing temperature and the reflectivity, the power is adjusted, so that the annealing temperature non-uniformity of the wafer is corrected, and the annealing temperature uniformity of the wafer is further improved.

A system for forming a glass ribbon is provided, comprising a glass molded body for forming glass and a first laser module. The glass molded body is configured to allow molten glass to flow along the surface of the glass molded body to form a glass ribbon. The glass ribbon defines a first surface having a width extending from a first edge to a second edge. The first laser module is configured to generate a first laser beam scanned at least partially along the width of the first surface within a first scanning angle range to apply heat to assist in controlling the thickness of the glass ribbon. The direction of the first laser beam facing the first center within the first scanning angle range strikes the first surface at a first center strike angle that is not perpendicular to the first surface.

The present teaching relates to obtaining three-dimensional (3D) information in a contactless manner using a one-dimensional (1D) distance sensor. The 1D distance sensor is associated with an origin from where a laser beam emitted in an orientation, where the origin / orientation are calibrated with respect to a marker attached thereon and tracked. In a surgery, the calibrated 1D distance sensor is tracked by a camera via the marker attached thereon. When an emitted laser beam hits at a location on a patient, the 3D coordinate thereof in the tracker coordinate system is determined based on tracked marker, the origin / orientation of the 1D distance sensor, and a distance between the origin of the 1D distance sensor and the location.

This application provides a detection device, a control method and control unit for the detection device, a lidar system, and a terminal. The detection device includes at least one laser, at least one area array detector, at least one lens assembly, at least one photodetector, and at least one microelectromechanical system (MEMS) micromirror. The lens assembly focuses the reflected light from at least one first laser beam onto the area array detector, with the reflected light from the at least one first laser beam located within the detection range of the lens assembly. The MEMS micromirror reflects the reflected light from at least one second laser beam onto the photodetector, with the reflected light from the at least one second laser beam located within the detection range of the MEMS micromirror. Specifically, the at least one first laser beam and the at least one second laser beam are emitted by at least one laser. The MEMS micromirror and lens assembly in the detection device receive the reflected light from lasers in different areas, achieving long-distance ranging through this dual-range mode.

The present invention relates to a method and apparatus for processing a workpiece (4), in particular to a method and apparatus for imprinting an anti-glare function through a laser pulse (100) of a laser (1), wherein the apparatus comprises: a laser (1), in particular a short pulse laser or an ultrashort pulse laser, configured to provide a laser beam (10) including a laser pulse (100); a first diffusion lens (2) and a second diffusion lens (2'), each configured to scatter the laser beam (10) and imprint a locally randomized intensity distribution on the laser beam (10) at a focal plane (12), wherein the first diffusion lens (2) and the second diffusion lens (2') sequentially scatter the laser beam (10); and at least one optical focusing system (3) configured to focus the laser beam (10) onto a focal area (120) within a focal plane (12) on the workpiece (4), wherein the laser beam (10) is applied to the workpiece (4) and consequently the workpiece is processed. The invention includes a progression device (5) configured to move a laser beam (10) and a workpiece (4) by one step (V) relative to each other, wherein the progression device includes a scanner device (50) having a first scanner element (500) and a second scanner element (502), the movement of the scanner elements (500, 502) generates one step, the second scanner element (502) includes a second diffusion lens (2'), and the movement of the scanner elements changes a locally randomized intensity distribution.

The application discloses a waveguide mode priority control system based on a coating technology and relates to the field of waveguide gas lasers.The system comprises a boundary construction unit, a radial discharge unit, a mirror cooling unit and a basic mode optimization unit.The boundary construction unit is sequentially distributed with a central clearance mode surface, a peripheral closed traction ring and an outer return discharge belt from inside to outside on the inner surface of an electrode plate.The radial discharge unit is provided with a radial discharge bridge between the traction ring and the discharge belt, and a gradient conductive layer with continuously decreasing resistivity is laid on the surface of the bridge.The mirror cooling unit is provided with a mirror cooling flow channel and a cooperative heat dissipation structure at the position corresponding to the traction ring and the discharge bridge inside the electrode plate.The basic mode optimization unit is connected with a dynamic impedance matching compensation network.Through deep cooperation of space geometry traction, gradient impedance outer guide and isomorphic thermodynamics locking, the application intercepts and directionally discharges micro-discrete charges, avoids the invasion of charge boundaries into the core clearance area, effectively dissipates the energy of high-order mode flanks, and thus stabilizes the output of high-purity basic mode priority laser beams.

This invention relates to an instrument for cutting human or animal tissue, including an optical coupler. The cutting instrument includes - a femtosecond laser (1), - a shaping system (2) located downstream of the femtosecond laser (1) for forming a phase-modulated laser beam, - an optical scanner (4) located downstream of the shaping system (2), - an optical focusing system (5) located downstream of the optical scanner (4), and - a control unit (6) for controlling the shaping system (2), the optical scanner (4), and the optical focusing system (5). The instrument is characterized in that it further includes an optical coupler (3) between the femtosecond laser (1) and the shaping system (2), the optical coupler (3) including a photonic crystal fiber for filtering the phase-modulated laser beam (21) from the shaping system (2).

A method for cutting a reflective light guide device from a light guide plate along a predefined contour is provided by directing a laser beam onto the light guide plate which enters the light guide plate on a main surface and forms a filament shaped damage along an elongated focus within the light guide plate. The laser beam is advanced relative to the light guide plate along the predefined contour so that a multitude of filament shaped damages are introduced side-by-side into the light guide plate. A section of the predefined contour extends within the part of the light guide plate in which cemented bond faces of the glass elements and the light reflecting layers are oriented obliquely to the main surfaces so that the laser beam penetrates the light reflecting layer being oriented obliquely to the laser beam. The reflective light guide device is cleaved from the light guide plate at the predefined contour.

The present application relates to the technical field of metal additive manufacturing, and aims at the problem of uneven pore size distribution and serious fine powder gasification and splashing in the existing additive manufacturing method for preparing porous structure materials, and provides a uniform porous structure material prepared by multi-pass scanning additive manufacturing and a preparation method thereof, which comprises the following steps: S1, an entity model of a space enveloped by the porous material is established, and slicing and layering are performed to obtain a plurality of model slices; S2, metal powder is laid into a powder layer, and then a laser powder bed additive manufacturing equipment is used to perform first-pass preprocessing scanning on the model slices, increase the high laser power, reduce the scanning speed, and perform second-pass forming scanning on the model slices to obtain the uniform porous structure material prepared by multi-pass scanning additive manufacturing.The present application fundamentally solves the problem of mismatch between the Gaussian distribution laser beam and the normal distribution powder particle size, can stably prepare uniform connected pores, and does not need subsequent powder cleaning treatment.

This utility model relates to a coke oven door and frame cleaning device, belonging to the field of coke oven cleaning technology. It includes a hollow column and multiple laser gun heads. A protective box is vertically slidable on the front side of the hollow column. A cable outlet box communicating with the interior of the protective box is fixedly connected to the lower rear end of the protective box. A cover plate is detachably fastened to the front opening of the protective box. Multiple laser gun heads are arranged horizontally and equidistantly inside the protective box. This utility model uses high-power laser beams emitted by the laser gun heads to irradiate impurities adhering to the surface of the oven door and frame, causing them to evaporate or decompose due to heat, thereby effectively removing impurities from the oven door and frame and achieving the cleaning purpose. Compared with traditional scraper-type cleaning, this laser cleaning method significantly improves the cleaning speed and can clean dead corners that scrapers cannot reach. Furthermore, laser cleaning does not require direct contact with the oven door and frame, thus avoiding wear and tear that may result from mechanical contact.

A method for cutting a workpiece (12) using a laser beam (14). The laser beam (14) has a first beam region (28) and a second beam region (30). The second beam region (30) surrounds the first beam region (28). The method comprises: providing the laser beam (14), wherein the intensity of the second beam region (30) has a value in the range of 1% to 7%, in particular 3% to 5%, of the intensity of the first beam region (28); and cutting the workpiece (12) using the laser beam (14) by guiding the laser beam (14) over the workpiece (12).

Disclosed are a laser heat treatment method for a substrate structure and a method for manufacturing an electronic element to which the same is applied. The disclosed laser heat treatment method for a substrate structure is a laser heat treatment method that irradiates one surface of a substrate structure that can be divided into a plurality of unit regions with a laser beam and performs heat treatment on the substrate structure, wherein the laser heat treatment method may include the steps of performing an nth laser heat treatment on the substrate structure and an (n+1)th laser heat treatment on the substrate structure, wherein the nth laser heat treatment may be performed on a first region of the substrate structure that includes one or more of the unit regions, wherein the (n+1)th laser heat treatment may be performed on a second region of the substrate structure that includes one or more of the unit regions, wherein the step of performing the nth laser heat treatment may include the step of irradiating the first region with the laser beam in a scanning manner while changing the relative position between the substrate structure and the laser beam, and wherein the step of performing the (n+1)th laser heat treatment may include the step of irradiating the second region with the laser beam in a scanning manner while changing the relative position between the substrate structure and the laser beam.

A personalization module, for personalization of a security document having a marking area for marking a two-image element MLI or CLI through an array of lenticular. The personalization module includes: a laser marking module, configured to mark within a marking zone, and having a laser head configured to emit a laser beam, and a laser scanner equipped with movable mirrors to deflect the laser beam towards the document. The personalization module further includes an optical prism, configured to refract the laser beam from the laser scanner mirrors to the lenticular lenses. One side of the prism enabling marking a first image element of the MLI or the CLI. The other side of the prism enabling marking a second image element of the MLI or the CLI.

The application discloses a laser and target debugging device with self-reference light and a debugging method thereof. The application comprises a seed source, a stretcher, a first amplifier, a first pump source, a menu system, a second amplifier, a second pump source, a compressor, a reference light loop, a reference light switch and a three-phase switch. The application does not need to place reference light externally, is more economical, and has the same quality of the main laser beam, including the same spot size, divergence angle and wavelength, which can accurately replace the original laser for subsequent target system debugging, and the debugging result is equivalent to that of the main laser. The addition of the reference light switch increases the use safety and avoids accidents caused by misoperation. The mKHz laser has high frequency, is beneficial to the observation of the human eye, and is very convenient for subsequent adjustment as the self-reference light.

This invention discloses a laser measurement device and its usage method, relating to the field of laser measurement technology. It includes a laser rangefinder body, a laser emitter, a moving structure, a positioning structure, and a rotating structure. The moving structure drives the laser emitter to move horizontally; the positioning structure fixes the moving structure and the laser emitter; and the rotating structure adjusts the angle of rotation of the laser emitter. This invention, by rotating the mounting tube and mounting block, causes the inner walls of the mounting grooves at both ends to press and push against the connecting column, driving the moving block and the laser emitter to move in opposite directions along both sides of the mounting frame. This adjusts the longitudinal distance between the two laser emitters, creating a longitudinal gap and a known time delay to distinguish different reflected signals. Furthermore, the two laser beams follow identical optical paths and are subject to environmental disturbances, eliminating measurement errors caused by atmospheric refractive index changes, vibrations, temperature drift, etc., thus improving measurement accuracy.

This invention relates to the field of laser fusion technology and provides a method for intelligent coupling of high-repetition-rate targets and beams for laser fusion energy. The method includes: in response to the injection of a target pellet into a vacuum target chamber, acquiring the three-dimensional coordinates and velocity vector of the target pellet through multiple sets of orthogonal measurement units deployed along the target pellet's flight path; using a machine learning prediction model deployed on an edge computing unit to calculate the arrival time and spatial position of the target pellet at a preset impact point within a first time threshold; adjusting the transmission path of the laser beam within a second time threshold using a piezoelectric ceramic beam deflection device, so that the optical axis of the laser beam points to the predicted spatial position; and triggering laser emission at the predicted arrival time, causing the emitted laser pulse to intersect with the target pellet moving to the preset impact point. This method can complete the entire process from trajectory tracking to beam alignment within a millisecond period, achieving micrometer-level spatial alignment and nanosecond-level time synchronization of high-repetition-rate targets under high-frequency operation conditions.

The application discloses a kind of for CFRP big depth-diameter ratio array hole multi-pulse width laser composite processing system and method.The system includes: multi-pulse width laser generation module, for outputting two initial laser beams;Beam shaping module, for the optical axis of two initial laser beams is adjusted to coaxial, the initial laser beam is shaped, adjusts the polarization state of initial laser beam, initial laser beam is modulated into two sub laser beams, adjusts the energy distribution of two sub laser beams, two sub laser beams are converted into two mirror image symmetrical distribution in the focusing laser beam array of two sides of the CFRP matrix to be processed.The application can be applicable to the high-efficiency high-precision processing of CFRP big depth-diameter ratio array hole, and nanosecond laser is used to improve processing efficiency, and femtosecond laser is used to effectively inhibit carbon fiber delamination and thermal damage of resin matrix.

The application discloses a laser converging system, a laser welding system and a laser welding machine, and relates to the technical field of optical converging. The laser converging system converts the preset S polarization laser beams sent by a laser device into two S polarization beams, and then into two P polarization beams through a plane mirror, an S polarization beam splitter, a first controlled mirror and a second controlled mirror arranged in the same XY plane, and converges the first light path and the second light path corresponding to the two P polarization beams at a preset space point outside the XY plane, so that the imaging light path for observing the converging conditions of the P polarization beams is designed outside the XY plane where the laser transmission light path is located, the mutual interference between the laser transmission light path and the imaging light path is avoided, and the control precision of the laser convergence is improved.

The utility model relates to a high -speed double light source automatic focusing laser engraving machine, include: cabin, the cabin has the installation cavity in, red blue light integral laser ware, the configuration in the cabin, high accuracy diffuse reflection module, the configuration in the cabin and detect work piece height downward, galvanometer, the configuration in the cabin, and with red blue light integral laser ware butt joint, field mirror, connect in the below of galvanometer, and emit laser beam downward, red dot laser ware, the configuration in the cabin, and emit focusing light beam downward, automatic focusing lifting assembly is connected with the cabin, drives the cabin and carries out the lift to carry out focusing, engraving platform, the configuration below the cabin.

This invention relates to a real-time monitoring device for yarn vibration characteristics based on laser imaging, comprising: a laser for emitting laser light to form a laser beam; a first polarizing beam splitter for orthogonally decomposing the laser beam into a measurement beam and a reference beam according to the polarization state of the laser; a measurement imaging optical path for measuring the yarn under test using the measurement beam and reflecting the measurement beam passing through the area where the yarn under test is located through a reflector to form an echo beam carrying the characteristic information of the yarn under test; a reference illumination optical path for constructing a uniform and stable background illumination reference beam; a beam splitter for combining the echo beam and the background illumination reference beam to obtain a combined beam; an area array camera for acquiring the combined beam; and an image processing system connected to the area array camera for performing image processing on the acquired combined beam to obtain the vibration characteristics of the yarn. This invention can accurately capture and quantify the vertical vibration characteristics of the yarn.

The application discloses a pump-repump-probe time-resolved spectrum system for measuring luminescence and absorption, comprising a laser beam splitting module, a probe light path construction module, a pump light path regulation module, a repump light path adjustment module, a double-channel signal acquisition module and a light path coupling and converging module. The same femtosecond laser is used to split a light beam, two-stage light splitting is performed to obtain initial light beams of pump, repump and probe light paths, and each light path is subjected to delay adjustment, wavelength conversion, focusing and other treatments, and then is precisely coupled at the same spatial position of a sample. The double-channel signal acquisition module synchronously captures luminescence signals and probe light transmission signals of the sample, and realizes data acquisition in combination with reference light path calibration. The test method acquires multidimensional dynamic information through light path optimization, light beam coupling, signal synchronous acquisition and analysis. The system realizes synchronous detection of luminescence and absorption signals under the same excitation condition, and solves the test error and single mode limitation of the traditional independent system.

LIDAR distance measuring device (10), comprising: a laser (12) for generating a laser beam, a frequency comb generator (14) configured to generate at least one optical frequency comb signal (37) based on the laser beam, a signal splitting unit (16) which is configured to split the optical frequency comb signal (37) into different optical signal channels (34), each of which is assigned a respective wavelength range, a channel matching unit (18) which is configured to change at least two optical signal channels (34) in their relative position to each other, a transmitting unit (20) which is configured to send light associated with the modified optical signal channels (36) as transmitting light (22) into a measuring area (24), a receiving unit (26) for receiving transmitted light reflected from objects (28) in the measuring range (24) as received light (30), and a signal processing unit (32) which is configured to determine a distance to the object (28) based on the received light (30) and in particular at least a part of the transmitted light (22).

The application discloses a laser shaping module, a projection light source system and a projection device, wherein the laser shaping module comprises a laser device for outputting a laser beam, and the laser beam has different divergence characteristics in a fast axis direction and a slow axis direction; a spherical lens is arranged on the light output side of the laser device; a cylindrical lens module is arranged on the light output side of the spherical lens; the cylindrical lens module has opposite first and second working surfaces along the propagation direction of the laser beam; the cylindrical axis of the first working surface is parallel to the fast axis direction and is used for shaping the laser beam in the slow axis direction; the cylindrical axis of the second working surface is parallel to the slow axis direction and is used for shaping the laser beam in the fast axis direction; and a pump light source is used for receiving the shaped laser beam and is pumped and excited under the action of the laser beam. The application compensates for the difference between the divergence characteristics of the laser beam in the slow axis direction and the fast axis direction by arranging the cylindrical lens module, thereby improving the quality of the pump beam and the pumping efficiency.

An electronic watch may include a housing defining a side wall, a display, a front cover positioned over the display, and an input system configured to receive a rotational input and a translational input. The input system may include a crown including a knob external to the housing and a rotor coupled to the knob and configured to rotate in response to the rotational input and translate in response to the translational input. The input system may further include a first laser module configured to direct a first laser beam onto the rotor and receive first reflected light from the rotor, a second laser module configured to direct a second laser beam onto the rotor and receive second reflected light from the rotor. The electronic watch may further include a processing system coupled to the first and second laser modules and configured to determine a parameter of the rotational input.

A laser tool apparatus includes a tool body, an optical fiber cable disposed in the tool body, the optical fiber cable including a laser head that emits a laser beam, a shaping optic coaxially disposed downstream of the optical fiber cable, the shaping optic shaping the laser beam emitted from the laser head, and a flexible cable attached to the shaping optic. The flexible cable flexibly directs the laser beam to a desired angle within a borehole.

The utility model relates to a kind of device of pulse laser pulse sub-string, including pulse laser, laser attenuation device, laser beam-reducing device, laser polarization device, wave sheet, Pockels cell, output mirror, waveform detection device, and output mirror is to the waveform detection device output first light beam and to the original light path reflection second light beam;Laser polarization device side is also configured full mirror;Pockels cell is connected with high-voltage pulse generator, pulse laser is also connected with digital delay pulse signal generator, and digital delay pulse signal generator is used to send synchronization signal to high-voltage pulse generator to control high-voltage pulse generator to generate voltage pulse when pulse laser emits laser beam reaches Pockels cell.This application realizes the stable control and output of pulse sub-string by the electro-optic modulation characteristics of Pockels cell, compared with traditional method of improving laser repetition frequency, implementation is simple, and use component is less, while guaranteeing stability, reduce cost.

The invention relates to a device (10) and a method for marking a group (110) of electrical components (115). For this purpose, a receiving device (15) for holding the group (110) of electrical components (115) in an alignment direction (20) and a marking device (25) are provided, which has a laser head (30) for emitting a laser beam (35) for applying a marking to the group (110) of electrical components (115) held by the receiving device (15), as well as a movement device (40) for generating relative movements between the laser head (30) and the receiving device (15) in order to arrange them in a marking position relative to each other for applying the marking, and a control device (45) for controlling the movement device (40) for the relative movement between the laser head (30) and the receiving device (15).The movement device (40) has at least one first guide element (50) which is designed and configured for guiding the movement of the laser head (30) along an orbital movement path (55) around the receiving device (15).