535 results about "Scanning mirror" patented technology

The invention belongs to the technical field of virtual machine mirror image static scanning, and particularly relates to a virtual machine mirror image static scanning method and system based on a hyper-fusion platform, and the method comprises the steps: creating a to-be-scanned mirror image storage snapshot, employing an index and retrieval algorithm, obtaining a static virtual machine mirror image file, extracting and recording metadata information of the static virtual machine mirror image file, and then carrying out integrity verification; collecting all-around resource data of the hyper-fusion platform in real time, and distributing corresponding resource quotas for scanning tasks by using a preset algorithm; multi-stage deep scanning is carried out, file fingerprints and feature matching are firstly used for preliminary screening, then misjudgment is eliminated through version intelligent comparison, potential high-risk vulnerabilities are deeply excavated for key complex components by adopting static code analysis, and configuration files in mirror images are comprehensively examined through rapid screening and positioning of known malicious software; and a preset algorithm is used for carrying out deep classification arrangement, correlation analysis and summary statistics on various types of result data, so that virtual machine mirror image scanning in a large-scale hyper-fusion cluster is completed in a relatively short time.

The invention discloses a precision machining scanning lens for a femtosecond laser. The precision machining scanning lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are sequentially arranged in the incident direction. Wherein the first lens is a concave-convex lens with a negative refractive index, the second lens is a concave-convex lens with a positive refractive index, the third lens is a convex-concave lens with a positive refractive index, the fourth lens is a concave-convex lens with a negative refractive index, the fifth lens is a biconvex lens with a positive refractive index, and the sixth lens is a biconcave lens with a negative refractive index. The seventh lens is a biconvex lens with a positive refractive index, and the eighth lens is a convex-concave lens with a negative refractive index. The precision machining lens used for the femtosecond laser can be matched with a D14 galvanometer, the focusing light spot is smaller than 3 microns, the machining efficiency is greatly improved, the focusing light spot is a round spot and cannot be ovalized, the heat affected area is small, and high-precision machining is achieved; the device can be used for processing various materials such as metal, glass and diamonds.

A flying-over beam pattern scanning hologram microscope device includes: a scan beam generation unit which converts a first beam and a second beam to a first spherical wave and a second spherical wave, and then allows the first and second spherical waves to interfere with each other to form a scan beam; a scanning unit, which comprises a scan mirror for controlling the scan beam in the horizontal direction, and a translation stage for moving an object in the vertical direction at the rear end of the projection unit; the projection unit projecting the scan beam onto an object plane; and a light collection unit for detecting a beam that has passed through the objective lens again after fluorescing or being reflected from an object.

The invention discloses a nozzle state detection device, method and equipment, a storage medium and a program product, and relates to the technical field of ink-jet printing.In the nozzle state detection device, a camera, a first mirror and a second mirror are sequentially arranged along a light path, and through cooperation of the camera, the first mirror, the second mirror and a corresponding micro-positioning table, the nozzle state is detected; and collecting an ink droplet image of the ink droplet ejected by the nozzle in the flying process, and analyzing the ink droplet image to obtain the nozzle state so as to complete the detection of the nozzle state. Wherein the second mirror is used as a scanning mirror, and the view field of the camera is expanded through rotation of the second mirror, so that the state of the nozzle is quickly and comprehensively inspected, and the detection time is greatly shortened; the camera is a high-resolution and high-precision camera, and the positions of the camera and the second mirror are accurately adjusted in time, so that the speed and the precision of nozzle state detection are integrally improved.

The invention provides an imaging spectrometer motion compensation imaging model construction method, an imaging model and a device, and relates to the technical field of space remote sensing. The method comprises the following steps: establishing a satellite orbit model, and defining a plurality of coordinate systems such as a detector coordinate system and a spectrometer imaging coordinate system and a conversion relation thereof; constructing a detector-scanning mirror-lunar surface ideal geometric mapping model based on the load optical parameters and a ray tracing method; determining the relation between the rotation angle of the scanning mirror and imaging spectrum view field positioning by using a reflecting prism conjugation theory; a quantitative relation is established by combining parameters such as satellite orbits and position postures, and finally a motion compensation imaging model is established. According to the method, the influence of the on-orbit error on the compensation imaging model is analyzed, and the error is used as an uncertainty component to be coupled into the model. According to the method, the problems of low model precision, neglect of influence of orbit observation parameters on imaging and the like in the prior art are solved, high-precision motion estimation and compensation can be realized, and the quality of data acquired by an imaging spectrometer is remarkably improved.

Systems, methods, and apparatuses are described for capturing panoramic images and positioning virtual objects on a device screen, using a device having a static camera and an adjustable camera. To generate a panoramic image, the device moves the field of view of the adjustable camera by moving a corresponding MEMS mirror. The device then captures a first image using the static camera, and a second image using the adjustable camera, and generates a panoramic image by combining the first and second images. To position a virtual object, the device captures a first image using the static camera, and determines that there are insufficient visual features in the first image for positioning. The device moves the field of view of the adjustable camera by moving the corresponding MEMS mirror, and captures a second image. Visual features from the second image are then used to position the virtual object.

A laser machining system comprises a laser generator (202) producing ultrafast laser pulses, a galvanometric scanner mirror (102, 204) for precision deflection of the laser beam (101), and a main unit (100) comprising a folded optical system with focusing optics (207, 210, 212, 214) capable of delivering the laser beam focused waist onto the surface of a elongated thin workpiece (103), for example, cylindrically-shaped, or having quadrilateral or mullitlateral or elliptic perpendicular cross-section. The main unit (100) is attached directly to the scanning mirror subsystem (102) and they both comprise the optical path, which is separated into several, e.g., four, equal paths terminating on the workpiece (103) surface from orthogonal directions covering the workpiece from opposite sides. The optical path in the main unit (100) is arranged in such a way that the paraxial optical mode remains valid at all reflecting mirrors, mitigating the optical aberrations of the focused beam onto the surface of the workpiece (103). With controlled deflection of the scanner mirror (204), the laser beam can access the full area of the outer surface of the workpiece (103) and process the workpiece (103) using controlled laser ablation or surface treatment using direct laser writing (DLW). The workpiece (103) is mounted into a translation stage perpendicularly to the laser beam, allowing free-form laser processing onto a cylindrically- or multilaterally-round elongated shape, by synchronized deflection (204) of the laser beam, and longitudinal translation of the workpiece (103) by the translation stage.

The invention relates to a detection module, a detection device, a digital detection system and a detection method. The detection module comprises a scanning unit, the scanning unit is arranged to perform three-dimensional scanning on a detected surface, the scanning unit comprises a laser projection device and a laser receiving device, the laser projection device comprises a laser source and an MEMS micro scanning mirror, and the laser receiving device is arranged to receive laser returned from the detected surface to obtain a laser image of the detected surface; and the processor is arranged to receive the laser image and process the laser image so as to detect defects on the detected surface. The scanning unit further comprises an RGB image sensor to acquire an RGB image of the measured surface, and the processor is further arranged to detect a defect on the measured surface from the acquired RGB image and based on the laser image and the RGB image. According to the invention, the detection precision of the detection module can be improved while the miniaturization of the detection module is realized.

Embodiments are for a confocal microscope unit attached to a connection port of a microscope including: light sources which output irradiation light to a sample to be observed; photodetectors which detect observation light generated from a sample in response to the irradiation light; a scan mirror which scans the irradiation light on the sample and guides the observation light generated from the sample to the photodetectors; a scan lens which guides the irradiation light scanned by the scan mirror to the microscope optical system and guides the observation light focused by the microscope optical system to the scan mirror; a lens barrel to which the scan lens is fixed; an attachment portion which attaches the lens barrel to the connection port ; and a movable portion which supports the lens barrel so that an angle of the lens barrel with respect to the attachment portion is changeable.

The invention relates to the technical field of underwater operation equipment, solves the problems that existing dam underwater crack repairing depends on divers or complex equipment, the automation degree is low, the construction period is long, the comprehensive cost is high and the adaptability is poor, and particularly relates to concrete dam underwater crack repairing and leaking stoppage equipment which comprises a robot for underwater cruise, and the robot comprises a machine body; the cruise vision module comprises a foresight navigation lens group, a look-around lens group, a bottom wide-angle lens, an active illumination system, an obstacle avoidance sonar system and a topographic mapping sonar; the crack detection module comprises a crack scanning ultrasonic detector, a high-resolution strip-shaped scanning lens group, a laser ray scanner, a multispectral imager, a laser distance measuring sensor, a water flow sensor and an attitude sensor, the crack repairing module comprises two groups of mechanical arms for punching and grouting, and the central controller controls the robot to execute. Crack filling, structure bonding recovery and long-acting sealing are achieved, and meanwhile the construction difficulty and the comprehensive cost are reduced.

A vehicle lighting equipment that irradiates light around a vehicle includes: a first light source, a first scanning mirror, and a first lens disposed on an upper side relative to a second light source, a second scanning mirror, and a second lens, in a vertical direction of the vehicle, and a phosphor plate including a first region on an upper side and a second region on a lower side in the vertical direction, where a first laser light passing through the first scanning mirror and the first lens is irradiated onto the second region of the phosphor plate, and a second laser light passing through the second scanning mirror and the second lens is irradiated onto the first region of the phosphor plate, and where a light generated from the phosphor plate is projected by a projection lens.

The present disclosure is directed to a camera configured to capture a set of oblique images along a scan path on an object area; a scanning mirror structure including at least one surface for receiving light from the object area, the at least one surface having at least one first mirror portion at least one second portion comprised of low reflective material arranged around a periphery of the first mirror portion, the low reflective material being less reflective than the first mirror portion; and a drive coupled to the scanning mirror structure and configured to rotate the scanning mirror structure about a rotation axis based on a scan angle. The at least one second portion can be configured to block light that would pass around the first mirror portion and be received by the camera at scan angles beyond the set of scan angles.

The invention relates to the technical field of scanning imaging, in particular to an airborne hyperspectral laser radar scanning system and method, an upper computer and a storage medium, and the system comprises airborne hyperspectral laser radar equipment which comprises an equipment body, a scanning mirror unit, a photoelectric detection unit and an angle coding unit, the scanning mirror unit reflects scanning laser to a target, the photoelectric detection unit is used for detecting a ground echo signal reflected by the target, and the angle coding unit obtains an angle coding signal in the scanning process of the scanning mirror unit; and the upper computer comprises a time synchronizer and a controller, the time synchronizer is used for processing the ground echo signals and the angle coding signals into time synchronization frame data of angles and waveforms, and the controller controls the scanning mirror unit to execute scanning actions according to the target scanning parameters. Therefore, the problems that time sequence deviation exists between angle coding information of an airborne hyperspectral laser radar scanning system and ground echo signal measurement in the prior art, and post-scanning imaging is affected are solved.

The invention discloses a wafer-level MEMS scanning mirror testing device, and the device comprises a detection platform which is used for placing a scanning mirror to be detected; the probe card assembly can be connected with the signal output device and is electrically connected with the scanning mirror to be detected; the first clamping assembly is arranged on the detection table in a position adjustable mode and used for clamping and fixing the light source assembly, and the light source assembly is used for emitting light beams to the scanning mirror to be detected; the second clamping assembly is arranged on the detection table in a position-adjustable manner and is used for clamping and fixing the probe card assembly; the third clamping assembly is arranged on the detection table in a position adjustable mode and used for clamping and fixing a two-dimensional PSD, and the two-dimensional PSD is used for collecting a light beam scanning track formed by the scanning mirror to be detected. Therefore, the electric signal can be transmitted to the to-be-detected scanning mirror through the detection card assembly so as to drive the to-be-detected scanning mirror, the test requirement of a bare chip of a single MEMS scanning mirror which is not packaged after wafer scribing can be met, the test requirement of the MEMS scanning mirror in a whole wafer can also be met, and the test efficiency of the MEMS scanning mirror is improved. Therefore, the wafer-level MEMS scanning mirror testing device has good universality, is high in testing precision, can realize automatic testing, and is favorable for improving the testing efficiency and reducing the testing cost.

The invention discloses a detection module, a detection device, a detection system and a detection method. The detection module comprises a scanning unit which is configured to perform three-dimensional scanning on a detected surface and comprises a laser projection device and a laser receiving device, the laser projection device comprises a laser source and at least two MEMS micro-scanning mirrors, the at least two MEMS micro-scanning mirrors are configured to reflect laser emitted by the laser source to the detected surface, and the laser receiving device is configured to receive the laser emitted by the detected surface; the laser receiving device is configured to receive the laser reflected from the measured surface to obtain at least two laser images of the measured surface; an RGB image sensor configured to capture an RGB image of the measured surface; and a processor connected to the scanning unit and the RGB image sensor, and configured to splice the at least two laser images together, and detect a defect on the detected surface based on the spliced laser image and RGB image.

The utility model discloses a logistics supply chain management terminal based on the Internet of Things, and relates to the technical field of methods or devices for reading record carriers. A logistics supply chain management terminal based on the Internet of Things comprises a handheld management terminal, a display screen, a scanning lens and a handheld handle, the display screen and the scanning lens are both arranged on the handheld management terminal, the handheld handle is fixedly connected to the bottom of the handheld management terminal, and the handheld management terminal is provided with a protection assembly. Through cooperation of a pressing rod, a first spring, a square positioning block and a second spring, the pressing rod can drive the square positioning block to be separated from a first square groove, so that the dustproof cover can be rotated conveniently, the dustproof cover can be opened or closed rapidly, and the situation that dust may pollute a scanning lens is avoided; therefore, the code scanning precision of the handheld management terminal is influenced, and the scanning lens can be protected through the dustproof cover when the scanning lens is not used.

Systems for the aiming of a laser beam of wireless power towards the photovoltaic cell of a receiver, using an adjustable beam deflection unit, enabling accurate orientation of the mirror used to deflect the laser beam. Insufficient aiming accuracy may result in the spilling over of beam energy intended for absorption by the photovoltaic cell, into the surroundings. The criteria of accuracy and stability required of an electronically controlled beam aiming mirror must be such that the angular deviation of a beam, from the direction intended by the electronic control, is such that the level of optical power transferred into the surroundings, when a beam having the maximum power which the system can transmit is aimed at the target, does not exceed that allowed by a regulatory requirement. One common regulation limits the allowed dissipated power to the power of a class 3B laser.

Optical transmitting apparatuses are disclosed. In in an implementation, an apparatus comprises an array light source that includes M*N light sources. An included angle between any column of light sources in the N columns of light sources and any row of light sources in the M rows of light sources is predetermined. The array light source is located on a first side of a collimating lens, a plane on which the array light source is located is perpendicular to an optical axis of the collimating lens, and a distance between the plane on which the array light source is located and a center point of the collimating lens is a focal length of the collimating lens. An rotatable scanning mirror is located on a second side of the collimating lens, and a center point of a reflective surface of the scanning mirror is on the optical axis of the collimating lens.

A technique of the present disclosure includes: capturing a first image when a scanning mirror is in a first position; rotating the scanning mirror by a first angle from the first position to a second position in a rotational direction of a rotation shaft; capturing a second image at the second position; obtaining rotation center coordinates of the second image with respect to the first image using the first image, the second image, and the first angle measured by an angle measuring sensor, and generating a corrected image, in which rotation of the second image and displacement about the rotation shaft are corrected, based on the rotation center coordinates, the first angle, and the second image.

The utility model provides a detection device of a scanning device. The scanning device comprises at least one mounting surface for mounting a scanning mirror, and the detection device comprises a supporting device, a reflector assembly and an optical angle measurer. The support device is configured to support the scanning device. The reflector assembly comprises a movable frame and a reflector arranged on the movable frame, and the movable frame is configured to move relative to the supporting device so as to be close to the supporting device and enable the reflector to be attached to the installation face or away from the supporting device. The optical angle measurer is configured to emit a detection light beam, receive echoes generated when the detection light beam is reflected by the reflector, and determine the deviation between the mounting surface and the standard position according to the echoes. According to the embodiment of the invention, the reflector assembly can simulate the condition that the scanning device is provided with the scanning mirror, the scanning device can be quickly and automatically detected, the detection process is simplified, the labor cost is saved, the detection precision is high, and the high-precision detection of the scanning device at low cost is realized.

The invention discloses a picture type hyperspectral full-wave band imaging system based on image space scanning. The system comprises a telescope system, an image space scanning mirror, a view field separation device, a spectrograph and a detector, wherein the spectrograph and the detector are arranged at different wave bands from visible light to long-wave infrared light; wherein the image space scanning mirror is in the shape of a cylinder with a right triangle section, a central optical axis is arranged in the image space scanning mirror, and the image space scanning mirror can move in parallel or rotate horizontally along the central optical axis to form rectangular view fields in different directions and at different angles; light from the rectangular area of the earth surface is converged to the image space scanning mirror through the telescope system, and a plurality of rectangular view fields are formed at different positions; and after passing through the field of view separation device, the light is split by a spectrograph and received by a detector in different bands of visible light-long wave infrared, and the problem of virtual focus of an image plane is avoided in the process of obtaining the hyperspectral full-band earth surface information in a picture manner. According to the invention, a foundation is laid for high-resolution area array staring imaging and full-band picture type hyperspectral and multispectral comprehensive detection.

The invention relates to an achromatic F-theta telecentric scanning field lens for low-coherence interference detection, and relates to the technical field of scanning field lens optical design. The achromatic F-theta telecentric scanning field lens comprises a front lens group and a rear lens group which are sequentially arranged from an entrance pupil position along an optical axis direction, the front lens group comprises a first lens, a second lens and a third lens which are sequentially arranged along the optical axis direction; and the rear lens group comprises a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged along the optical axis direction. According to the achromatic F-theta telecentric scanning field lens, in the aspects of chromatic aberration control and geometric aberration correction, the front lens group and the rear lens group are relatively independent, and the whole system obtains better achromatic and aberration correction effects through the comprehensive action. And in the aspect of F-theta distortion balance, the front lens group and the rear lens group are matched with each other, so that F-theta distortion offset is realized to the greatest extent.

The invention provides a laser radar. The laser radar comprises an optical-mechanical structure. The optical-mechanical structure moves around the first rotating shaft; the optical-mechanical structure comprises a transceiver, an optical element and a scanning mirror. The transmitting-receiving piece comprises a laser and a detector; the reflecting surface of the scanning mirror moves around a second rotating shaft, the second rotating shaft is parallel to the reflecting surface, and the included angle between the second rotating shaft and the first rotating shaft is larger than 0 degree. The optical-mechanical structure can realize a laser radar with a larger detection field of view at a lower cost.

An aberration-free laser spot scanning apparatus, comprising a resonant scanner (1), a first concave mirror (2), a second concave mirror (3), an X-axis galvanometer scanning mirror (4), a third concave mirror (5), a fourth concave mirror (6) and a Y-axis galvanometer scanning mirror (7) which are sequentially arranged in the direction of light beam propagation. Compared with existing laser spot scanning apparatuses that generally use a lens as an optical relay element between scanning mirrors, replacing the lens with a concave mirror to complete optical relay between scanning mirrors can avoid spherical aberration in a focusing transmission element, while also reducing the optical power loss generated by light transmission through a glass element, so that the aberration-free laser spot scanning apparatus can be applied to an optical microscopic imaging (e.g., laser confocal and two-photon imaging) system.

A retinal projection display system includes at least one visible light source for projecting a visible light image, an infrared light source for projecting infrared light, a scanning mirror having a field of view larger than the visible light image, a reflective surface on which the visible light image is projected and on which the infrared light is reflected at least partially towards an eye of a user, wherein the reflective surface is larger than the visible light image, at least one infrared photodetector for receiving reflected infrared light that reflects off of the eye of the user, and a hardware computation module comprising a processor and a memory, the hardware computation module configured to determine a gaze direction of the user based at least in part on the reflected infrared light.

The invention provides a region division method and system for multi-laser-beam additive manufacturing equipment. The region division method comprises the steps that a three-dimensional image of a to-be-machined workpiece is obtained; dividing the three-dimensional image into a plurality of two-dimensional processing sections, and dividing each two-dimensional processing section into a plurality of scanning units; calculating the predicted working time of each scanning unit processed by a single scanning galvanometer, and determining the processing priority of each scanning unit; the state score of the scanning galvanometer is calculated according to multiple parameters of the scanning galvanometer, and the matching degree is calculated according to the deflection angle between the scanning unit and the scanning galvanometer; and determining a distribution strategy between the scanning galvanometer and the scanning unit according to the state score and the matching degree of the scanning galvanometer, and processing the scanning unit according to the processing priority. The problems that existing laser additive manufacturing is poor in machining quality and low in efficiency are solved.

Lens for projection and detection of light, comprising a microscanner (1) for variable deflection of at least one light beam (2) by means of a scanner mirror (11) capable of vibration in at least one dimension, which has an optical axis (O) referenced to a rest position of the scanner mirror (11) and an opening (12) around the optical axis (O) for collinear transmission of the light beam (2), a convex mirror (3) arranged on the optical axis (O) and designed to reflect the light beam (2) transmitted through the opening (12) of the scanner mirror (11) along the optical axis (O) onto the scanner mirror (11), and a lens arrangement (4) arranged between the convex mirror (3) and the microscanner (1) on the optical axis (O) to influence a divergence of the light beam (2) such that the light beam deflected by the scanner mirror (11) is collimated.

The optical scanning device includes a light source unit, a polygon mirror, a first scanning lens, a second scanning lens, and a container unit. The light source unit has a plurality of light-emitting modules for each emitting a laser beam. The container unit contains the levitating unit, the polygon mirror, the first scanning lens, and the second scanning lens. Each light-emitting module includes a light-emitting element for emitting a laser beam, a coupling lens, and a bracket. The coupling lens converts the laser beam emitted from the light-emitting element into a direction generally parallel to a main scanning direction, and moreover condenses the laser beam to a sub scanning direction. The light-emitting modules are placed in array in an up / down direction between neighboring ones of the protruding portions, and the bracket is fixed to the protruding portions on both sides via adhesive.

The invention provides a laser signal emission control method of a three-dimensional laser scanner, and relates to the technical field of laser emission control. Obtaining a current working parameter and a grating signal, and determining an included angle between adjacent point clouds according to the current working parameter; the current working parameters comprise the ranging laser emission frequency and the rotating speed of the scanning rotating mirror; determining an original angle count value according to the grating signal; subdividing the increasing time interval of the original angle count value, and determining a subdivided count value; determining a subdivision angle count value according to the original angle count value and the subdivision count value; normalizing the point cloud included angle and the subdivision angle count value, and performing complementation processing on the normalized subdivision angle count value by using the normalized point cloud included angle to obtain a laser trigger reference value; and when the laser triggering reference value is negatively increased, laser emission is controlled. The method has the effect of improving the spatial position precision of the point cloud coordinate data and the consistency of the laser beam emission direction.

According to an example aspect of the present invention, there is provided an optical scanning module, comprising a scanning mirror, wherein the scanning mirror is arranged to direct a first light signal coming from a single light source to a first telescope objective via a first optical path, and at least one second light signal coming from the single light source to at least one second optical path, to scan at different distances with different angular resolutions, wherein the first optical path is different than the second optical path, and the optical scanning module is arranged to receive a reflected version of the first light signal via the first telescope objective and the first optical path, and a reflected version of the at least one second light signal via the at least one second optical path.