65 results about "Light scanning" patented technology

To improve the accuracy of the stopping position when an autonomous mobile robot stops at a target location. [Solution] The autonomous mobile robot autonomously moves along a first target path to a first stop position just before the target stop position, while measuring and comparing the surrounding conditions using laser scanning (S1, S2). While stopped at the first stop position, it recognizes the position of a marker placed near the target stop position (S3), generates a second target path approaching the marker (S4), performs odometry movement to the second stop position following the generated second target path (S5, S6), recognizes the marker while stopped at the second stop position (S7), estimates the error with the target trajectory to the target stop position, performs odometry movement to correct the error (S8, S9), and stops at the target stop position (S10).

Embodiments of the present disclosure relate to an optical scanning system, a laser radar and a vehicle. The optical scanning system includes a polarization converter, a polarization beam splitter, a phase delay element, and a scanning element. The polarization converter is configured to receive a first light having a first polarization state and a second light having a second polarization state and emit a third light having the second polarization state. The polarization beam splitter is configured to reflect the third light. The phase delay element is configured to receive the third light and emit a fourth light. The scanning element is configured to receive the fourth light and emit a fifth light. The phase delay element is further configured to convert the fifth light into a scanning light having the first polarization state, and the polarization beam splitter is further configured to transmit the scanning light.

The application provides a kind of urban self-purification enhancement method based on polyenergy laser in-situ modification building outer wall catalytic coating, the urban self-purification enhancement method includes: using polyenergy laser to in-situ scanning on the photocatalytic coating on building outer wall, induce the local high temperature field with temperature greater than 900 DEG C to form on the surface of the photocatalytic coating, make the lattice reconstitution of catalytic material in photocatalytic coating.The urban self-purification enhancement method, by using polyenergy laser in-situ scanning, control the temperature of local high temperature field formed, laser scanning speed and single point irradiation time, in the case of not damaging substrate, the regeneration of aging photocatalytic coating on building outer wall is realized;In addition, the urban self-purification enhancement method also has the advantages of low cost, wide application range and on-site operation, and has broad application prospect.

This disclosure relates to a lidar, a scanner for the lidar, and an apparatus. The lidar includes a transmitter and a scanner. The transmitter is configured to emit a probe light. The scanner is configured to oscillate about a rotation axis within an oscillation range, deflecting the probe light into a field of view. The oscillation range includes a first fixed-speed region, a first variable-speed transition region, and a second fixed-speed region along a first direction. The first direction is perpendicular to the rotation axis. The scanner rotates at a greater speed in the first fixed-speed region than it rotates at the second fixed-speed region. In the first variable-speed transition region, the scanner's rotational speed varies with angle according to a half-period cosine function.

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 relates to the technical field of light beam scanning, in particular to a dot matrix structured light scanning method and device based on a superstructure surface, wherein the method comprises the following steps: acquiring array light beams of incident light beams during dot matrix structured light scanning based on at least one array unit in a first-order superstructure surface; generating outgoing light beams of the incident light beams based on the array light beams and a second-order superstructure surface which satisfies a certain interval condition with the first-order superstructure surface; and generating a scanning result of the dot matrix structured light scanning based on the outgoing light beams. Therefore, the problems that the long-distance detection precision is limited when a static dot matrix structured light projection is realized based on a superstructure surface and the detection field of view and detection efficiency are limited when a dynamic adjustable laser beam scanning is realized based on the superstructure surface are solved.

The application discloses a projection figure distortion prediction compensation correction method of a laser scanning projection system, and comprises the following steps: carrying out laser scanning projection system projection; acquiring projection figure distortion data, establishing a neural network training data set and a test data set; establishing an initial topological structure, weights and thresholds of a BP neural network; optimizing the weights and thresholds of the BP neural network based on a particle swarm optimization algorithm; carrying out deviation compensation on the coordinate positions of each projection point according to the training output of the PSO-BP neural network; selecting feature points in each part of a to-be-projected plane; projecting the feature points by using a distortion deviation correction projector based on the PSO-BP neural network; acquiring feature point projection coordinate values; subtracting the ideal projection point coordinates without distortion from the corrected feature point projection coordinates; judging whether the difference value meets an error interval; if yes, it is determined that the projection coordinate value distortion error has been corrected and compensated; if no, returning to step three for feedback type multiple iterations until the difference value meets the error interval.

The present invention provides a cyclic exposure scanning system having distributed multi-lens and method thereof. The system includes a processor, a platform, an optical engine, a first optical imaging device, a second optical device and a light guide structure. By executing the method of the present disclosure by the system, the optical engine projects the first optical image and the second optical image respectively. The first optical image is guided to the first optical imaging device and the second optical image is sequentially guided to the second optical imaging device through the light guide structure. The first optical imaging device and the second optical imaging device receives and projects the first and second optical images onto the corresponding exposure areas, respectively. Such that efficiency and light source utilization may be significantly increased.

The application provides an optical scanning system, which comprises a polarization converter, a polarization beam splitter, a phase delay element and a scanning element. The polarization converter receives first light with a first polarization state and second light with a second polarization state, and is configured to convert the polarization state of the first light into the second polarization state and to emit the first light and the second light together as third light with the second polarization state. The polarization beam splitter receives and reflects the third light. The phase delay element is configured to receive the third light and emit fourth light with a third polarization state. The scanning element is configured to receive the fourth light and emit fifth light with a fourth polarization state towards the phase delay element, and is further configured to change the emission angle of the fifth light. The fifth light emitted from the scanning element is converted into scanning light with the first polarization state by the phase delay element, and the polarization beam splitter is configured to transmit and emit the scanning light. The application further provides a laser radar using the optical scanning system and a vehicle.

The utility model discloses an exposure scanning shaft drive mechanism, exposure scanning shaft drive mechanism adopts the mode of linear motor module drive, eliminates mechanical transmission gap, improves the scanning speed of exposure scanning shaft, improves the positioning accuracy of vertical exposure equipment, satisfies the high accuracy requirement of exposure machine field. The counterweight of the present application is connected with the mounting base, and the counterweight offsets the weight of the lens module, which can reduce the driving force when the linear motor module is driven, so that the exposure scanning shaft drive mechanism is suitable for heavy load occasions. At the same time, the problem of the lens module falling due to its own weight after the linear motor module is powered off can be avoided, and the adaptability of the exposure scanning shaft drive mechanism is improved. In addition, the exposure scanning shaft drive mechanism of the present application has simple and reliable structure, low noise and low wear, which greatly reduces the maintenance cost in the later period.

This application relates to the field of building engineering inspection and testing technology, specifically disclosing a handheld multifunctional laser scanning and measuring device. It includes a detachably connected battery pack, a computing control module, and a measuring unit. The battery pack and level calibration module are located at the lower part of the measuring device, while the computing control module and measuring unit are located at the upper part. The upper and lower parts of the measuring device are connected together by a connecting device. The purpose of this patent is to solve the problem of low accuracy in existing scanning and measuring devices. It is mainly used for scanning and measuring rectangular or non-rectangular rooms.

The utility model provides a kind of laser pitch yaw scanning platform, it is related to laser scanning platform technical field. Including: first motor support and second motor support;First motor, it is fixed in the upper end of the second motor support, and is connected by four first screws;Second motor, it is fixed in the side of the first motor support, and is connected by four first screws, its output shaft penetrates the first motor support and is connected with the second motor support by second screw.The utility model realizes horizontal scanning and pitch scanning by operating two motors, simple structure, smaller, easy to control.

A system comprises a light source, a scanner, a reference reflectivity material, a detector, and a processor. The light source is configured to emit light, and the scanner is configured to scan the emitted light across at least a portion of a reachable region including a field of regard through a window. The reference reflectivity material is included internally within a housing of the system and located in the reachable region but outside the field of regard. The detector is configured to detect at least a portion of the emitted light scattered by the reference reflectivity material. The processor is configured to analyze detected information from the detector to determine an electrical property of the emitted light.

This utility model discloses a system for measuring the depth of localized corrosion defects, comprising: a grating module mounted on a fixed housing, which includes a measuring grating with adjustable grating scale; a structured light scanner located above the grating module, used to generate a structured light source passing through the grating surface formed by the measuring grating so that the structured light source illuminates the measuring area containing pitting defects, and scans the measuring area along at least two planar directions; and an information processing module used to obtain point cloud data in at least two planar directions to determine the depth of the target pitting defect.

The present application relates to cable plastic sealing technical field, specifically, relate to a kind of cable plastic sealing production system and control method thereof.The method is by annular laser scanning real-time acquisition wire section, calculate the radius value of each section in eight radial directions to evaluate distortion;Statistical short-term distortion section proportion, threshold value is triggered to regulate and control.It is system to call historical data, calculate the cumulative radius sum value of each direction, according to its spatial distribution mode, automatically diagnose mold eccentricity fault.The core of the method is: according to the first three maximum cumulative value direction to build thickening vector, vector synthesis is obtained first combined vector representing eccentric direction and degree, according to this to query preset control table, obtain quantitative adjustment parameters of extrusion mold horizontal and vertical screw.The present application realizes real-time online diagnosis and automatic quantitative correction to mold eccentricity defect, forms intelligent closed-loop control, significantly improves product quality consistency, production efficiency and automation level.

The application discloses an anti-fog polymer and a preparation method and application thereof. The preparation method comprises the following steps: (1) depositing an inorganic thin film on a polymer; and (2) laser scanning a polymer surface after the inorganic thin film deposition, so that a micro-nano structure is formed on the polymer surface, and an anti-fog polymer is obtained. The stable micro-nano structure is formed by using the above process, the polymer has the anti-fog and self-cleaning capabilities, the process is adjusted to be suitable for different polymer materials for anti-fog and anti-fouling, such as resin spectacle lenses, greenhouse plastic films, polyimide (PI), polyetherimide (PEI), polyethylene terephthalate (PET) flexible transparent plastic and the like. The preparation method has the advantages of low requirement on equipment, low cost and large-scale production.

This invention discloses a laser scanning device and method for detecting the surface defect size of porcelain insulators, relating to the field of laser detection technology. The device includes a base, an adaptive distance adjustment component at the bottom of a rotating connecting block, and an angle adjustment unit at the bottom of a positioning plate. By using the adaptive distance adjustment component, when the distance between the two connecting seats is adjusted, one of the connecting seats will move the first piston rod. The solution inside the first piston cylinder will then enter the second piston cylinder through a first conduit, a rotating sealing sleeve, and a second conduit. At this time, the second piston rod will move the L-shaped connecting plate, thus reducing the distance from the center of the connecting pin to the center of the retaining ring. Then, the second motor is activated, and the transverse guide rail will drive the laser measuring instrument body to perform a contour scan of the porcelain insulator. This allows the horizontal distance from the laser measuring instrument body to the center of the retaining ring to change according to the length of the porcelain insulator.

A projector. In the projector, color breakup is reduced while color gamut and luminance are taken into account. The projector includes a first light source device that emits first color light, a first liquid crystal panel that has a plurality of rows, and a first light scanning device that scans the first color light in a column direction. In each of a plurality of subframes included in one frame, a voltage corresponding to different color data is written to each row or each multiple row from a first row toward a last row, the first color light is scanned from the first row toward the last row, red color light is emitted from the first light source device as the first color light during a period in which a voltage corresponding to red color data is written, green color light is emitted from the first light source device as the first color light during a period in which a voltage corresponding to green color data is written, and blue color light is emitted from the first light source device as the first color light during a period in which a voltage corresponding to blue color data is written.

The application relates to the technical field of engineering geology exploration, and discloses a 3D scanning core characteristic parameter identification system and method, which comprises a core storage module and a 3D scanning module; the method comprises the following steps: separating complete and fragmented cores by self-adaptive cleaning and separation of drilling core samples, forming a space-attribute binding initial data set; dynamically adjusting the height and levelness of a 3D laser scanner by an automatic numerical control platform, generating an optimal scanning path topology network covering all core boxes; the scanning path topology network feeds back point cloud coverage in real time, dynamically adjusts the rotation angle, and outputs a full-angle high-density core point cloud sequence; the full-angle high-density core point cloud sequence is fused by multi-scale features, and an automatic columnar chart, a quantitative parameter set and a joint parameter package are generated. Through automatic and high-precision scanning and data analysis, the application realizes digitalized collection of cores and accurate calculation of geological parameters, and improves the efficiency and quality of geological exploration.

The utility model relates to open balcony technical field especially relates to an open balcony safety alarm device, including fixed frame, pressure sensor, laser scanner and light barrier, fixed frame is installed on the balcony, and the fixed frame top is fixedly connected with pressure sensor, and the fixed frame left part is fixedly connected with laser scanner, and the inductive area of pressure sensor covers the local area of balcony open side, and the pressure sensor right part is fixedly connected with light barrier, and light barrier and laser scanner are mirror image symmetry distribution. The utility model discloses through installing fixed frame at the key position of building balcony, and integrating pressure sensor on it, realizes the real -time monitoring to the abnormal behavior such as personnel close, lean or climb, when detecting the pressure signal that exceeds the set threshold value, timely through the electric wire and transmit the alarm signal to the alarm lamp body of first floor, remind the management personnel to intervene and handle, and effectively improve the safety management efficiency.

The utility model relates to a catheterization device technical field, especially a kind of catheterization device of infrared scanning record urine volume.The utility model provides such a kind of catheterization device of infrared scanning record urine volume, comprising: catheterization tube, the one end of catheterization tube far from being inserted into patient's body is connected with cylindrical urine storage bag;Liquid outlet pipe, urine storage bag bottom is equipped with liquid outlet pipe;First cladding shell and second cladding shell, the protective shell formed by the mutual splicing of first cladding shell and second cladding shell is equipped on the outside of urine storage bag, and round hole is opened in the top and bottom of second cladding shell.The utility model scans liquid level by infrared light, automatically records urine flow, then data is transmitted to external processor to carry out data induction arrangement, and then when replacing urine storage bag, by controlling elastic ring to loosen first cladding shell and second cladding shell, then it is taken off from urine storage bag, and it is installed to new urine storage bag, infrared scanner is installed to disposable catheterization tube, and medical cost is saved.

A laser scanning method that is a method for scanning a laser beam emitted from a distal end of an optical fiber in a liquid medium. The laser scanning method includes emission of a pulsed laser beam from the distal end in the medium, wherein the emission of the pulsed laser beam includes: generating a bubble that is to come into contact with the distal end and an operation member by means of the laser beam emitted from the distal end, the operation member being disposed only at one side of the distal end in a radial direction of the optical fiber; and contracting the bubble by stopping the emission of the laser beam from the distal end.

The utility model discloses a kind of automatic detection systems of finished product based on vision, including rack, rack top is provided with manipulator, material table, object table, roughness detection component, horizontal camera imaging detection component, vertical camera imaging detection component, laser scanning imaging component, computer, rack side is fixed with material table and manipulator, roughness detection component is installed in rack top near material table, horizontal camera imaging detection component is installed in rack top near roughness detection component position, object table is slidably connected in rack top middle position, vertical camera imaging detection component, laser scanning imaging component are sequentially arranged in the side of horizontal camera imaging detection component relative to the rack top, manipulator and each detection component are with computer signal transmission. Through real-time analysis and processing of detection data by computer, the quality of finished product can be automatically determined, and linkage control with manipulator is realized, realizing the automation and intelligentization of detection process.

The embodiment of the application discloses an optical mechanical system, which comprises a shell, a light emitting assembly, a light receiving assembly, a light scanning assembly and a spacer. The spacer is formed with a transmitting light channel and a return light channel. The light emitting assembly is arranged corresponding to the first light inlet of the transmitting light channel. The first light scanning element is arranged corresponding to the first light outlet of the transmitting light channel. The first light scanning element is also arranged corresponding to the second light inlet of the return light channel. The light receiving assembly is arranged corresponding to the second light outlet of the return light channel. At least part of the transmitting light channel is separated from at least part of the return light channel. The optical mechanical system of the embodiment of the application can reduce or even avoid the interference of stray light on the transmitting light signal and the return light signal. Meanwhile, at least part of the transmitting light channel is separated from at least part of the return light channel, which can improve the independence of the transmitting light channel and the return light channel and reduce the crosstalk between the transmitting light signal and the receiving light signal.

The application discloses a tetrazine cyanine compound and a preparation method and application thereof. The skeleton of the tetrazine cyanine compound is directly connected with a BFI part of cyanine, can better affect the overall fluorescence opening multiple of the tetrazine cyanine compound by adjusting an R1 group, can also realize high-resolution imaging of a lysosome, an endoplasmic reticulum and a mitochondrial membrane by selecting a suitable R1 group and cooperating with a predetermined site molecule, can realize high fluorescence opening multiple in a near-infrared region, can significantly enhance a fluorescence emission signal from an extremely low background level after reacting with BCN, and can also have excellent light stability, wherein the fluorescence intensity of a TBCy3P addition product generated in situ is basically maintained unchanged in the whole irradiation period under continuous 100-frame laser scanning excitation, and the cell morphology is normal.

The application relates to the technical field of medical instrument manufacturing, in particular to an endoscopic probe with adjustable focal length based on a double hybrid superlens, wherein the endoscopic probe comprises a first lens for coupling initial ablation light; a second lens for coupling initial imaging light; a MEMS galvanometer mirror for reflecting the coupled imaging light based on lesion tissue; a double hybrid superlens for adjusting the focal length of the reflected imaging light; a dichroic mirror for reflecting the coupled ablation light and transmitting the adjusted reflected imaging light, and scanning the reflected ablation light and the transmitted imaging light to the lesion tissue to generate a scanning result of the lesion tissue. Thus, the problems in the prior art that different focal length probes need to be replaced or the position of the endoscopic probe needs to be adjusted to check different depth tissues, the operation is complicated, the accuracy and efficiency of diagnosis and treatment are affected, the purpose of diagnosis and treatment integration cannot be achieved, the operation efficiency is reduced, and certain limitations exist in actual application are solved.

This invention discloses a perovskite solar cell unit, a module, and a method for fabricating the same. The perovskite solar cell unit includes a substrate, a perovskite functional layer stacked region disposed on its surface, and an exposed region to be overlapped. The perovskite functional layer stacked region includes a modified transparent conductive electrode layer and an array of deposition trenches formed by the modified transparent conductive electrode layer and a protective adhesive layer. Each deposition trench contains, from bottom to top, a first charge transport layer, a perovskite light-absorbing layer, a second charge transport layer, a buffer protective layer, and a transparent conductive layer. A grid electrode is fixedly disposed on the top of each protective adhesive layer. The modified transparent conductive electrode layer is obtained by transient laser scanning of the transparent conductive electrode film. This invention, combining electrode layout optimization and device structure design, can significantly reduce module production costs, simplify the fabrication process, and simultaneously improve production efficiency and process adaptability, providing a new approach for the fabrication of high-performance perovskite solar cells.

An image forming apparatus includes an image forming section, an optical scanning device, an image density sensor, and a control unit. The optical scanning device scans the surface of the image carrying member with light emitted from light sources to form an electrostatic latent image. The control unit can perform light amount calibration to adjust the exposure amount of the light scanning device based on the density of a reference image detected by the image density sensor. The reference image used for light amount calibration has a dot pattern in which as many individual dots as there are light sources are arrayed at regular intervals in the main scanning direction. The dot pattern is formed repeatedly in the main and sub scanning directions. The dots forming the dot pattern are arranged at different positions in the sub scanning direction to be displaced in units of pixels from each other.

The application provides an intelligent welding system integrated with a real-time focal length compensation function, and relates to the technical field of laser welding.The intelligent welding system comprises a laser, a laser scanning system, a control module and a clamping positioning mechanism.The laser scanning system is arranged opposite to the laser, is used for measuring the position offset of an electric core and a battery shell and adjusting the focal length of a laser beam in real time, the control module is connected with the laser scanning system, is used for calculating the focal point offset according to the position offset and sending the focal point offset to the laser scanning system, and the clamping positioning mechanism is connected with the electric core and the battery shell, makes the electric core and the battery shell closely adhere to each other, and conveys the electric core and the battery shell to a welding station.The position offset obtained by the laser scanning system is fed back to the control module, the control module calculates the focal point offset according to the position offset and compensates, so that self-adaptive focusing is realized, the welding quality is improved under the premise of not affecting the production rhythm, and each welding is located at an ideal focal point position.

A method for verifying the functionality of a laser scanner includes a housing with a light-permeable window, a transmission unit inside the housing, a deflection unit, and a detector unit inside the housing. At least one test signal is transmitted by the transmission unit during a test phase. The deflection unit is oriented so that the at least one test signal is not directed to the window. Components of the at least one test signal are detected by the detector unit, and based on this detection, at least two detector signals are generated. A pulse width is ascertained for each of the detector signals by a computing unit, and a ratio of the pulse width of a first detector signal to the pulse width of a second detector signal is ascertained. The operability of the transmitter unit and / or the detector unit is verified on the basis of said ratio.