233 results about "Scanning mirror" patented technology

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 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.

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.

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 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 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.

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 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.

This invention provides a system and method for detecting the velocity of an object using a lidar. [Solution] Separate irradiation lines generated by first and second lasers, angularly separated by a selectable angle of 1 to 15 degrees, are swept across the entire field of view using a scanning mirror, thereby sequentially illuminating objects with a known time delay determined by the angular separation and the movement of the mirror. Reflections from the objects are detected by corresponding detectors, and data from these events are processed to generate positional information for each irradiation. By analyzing the change in object position between acquired data and taking into account a controlled time delay, a velocity measurement of the object is calculated.

This application relates to an integrated MEMS two-dimensional scanning detection system, a capacitance angle measurement method, and an apparatus. The integrated MEMS two-dimensional scanning detection system includes: a laser detection component and a magnetic circuit component disposed below the laser detection component. The laser detection component is an integral structure formed by connecting a scanning lens to a riveting area via a Y-shaped two-dimensional rotation axis. The magnetic circuit component is a hollow structure enclosed by two types of magnetic circuit modules, which are used to generate magnetic fields in different directional dimensions. The riveting area of ​​the laser detection component is connected to the magnetic circuit modules in the magnetic circuit component. The scanning lens is located in the cavity enclosed by multiple magnetic circuit modules, and under the drive of magnetic fields in different directional dimensions, the Y-shaped two-dimensional rotation axis drives the scanning lens to rotate in the corresponding directional dimension within the cavity. This integrated MEMS two-dimensional scanning detection system can reduce the overall size of the electromagnetic scanning mirror.

The present invention relates to a fly-by light beam pattern scanning hologram microscope apparatus using a scanning mirror and a transfer stage. The present invention provides a fly-by light beam pattern scanning hologram microscope apparatus, comprising: a scanning light beam generating unit modulating a phase of a first light beam separated from a light source to convert the first light beam into a first spherical wave through a first lens, converting a second light beam into a second spherical wave through a second lens, and then making the first spherical wave interfere with the second spherical wave to form a scanning light beam; a scanning unit including a scanning mirror for controlling the scanning light beam in a horizontal direction to transmit it to a projection unit and a transfer stage for moving an object in a vertical direction at a rear end of the projection unit; a projection unit including a plurality of lens systems and an objective lens and projecting the scanning light beam transmitted from the scanning unit on an object plane; and a light collecting unit for detecting a light beam that has passed through the objective lens again after fluorescing or reflecting from the object, wherein the scanning light beam projected on the object plane has different patterns according to a conical angle condition and a focal point position of each of the first spherical wave and the second spherical wave formed on the scanning mirror.

The invention relates to the technical field of building component quality detection, in particular to a fabricated building component three-dimensional laser scanning quality detector which comprises a support, a mounting table, a scanning mirror, a laser transmitter, an air inlet assembly, a drainage assembly and an atomization assembly. The air inlet assembly is matched with the drainage assembly to enable air around the scanning mirror to form a high-speed flowing air curtain, flying dust particles in the air around the scanning mirror are blocked through the air curtain, so that the mirror surface of the scanning mirror is protected, the scanning effect is further guaranteed, and meanwhile particles in air flow are removed through the atomization assembly before the air curtain is formed; therefore, the air curtain airflow is ensured to be clean and transparent, and the influence on the imaging effect caused by the influence on laser reflection is avoided.

To reduce clipping and loss of brightness of a projected image.SOLUTION: There is provided a laser projection system (200), where light output by an optical engine is directed to a first scan mirror (206) as two angularly separated laser light beams (1002 and 1102). The angularly separated laser light beams typically have different angles of incidence (1010 and 1110) on a second scan mirror (208) of an optical scanner. Respectively different levels of magnification are applied to a beam diameter of each of the angularly separated laser light beams in a first dimension, such that the angularly separated laser light beams have respectively different beam diameters (1012 and 1112) upon incidence at the second scan mirror. The different beam diameters of the angularly separated laser light beams result in regions of incidence of each of the angularly separated laser light beams on the second scan mirror being equal or substantially similar.SELECTED DRAWING: Figure 1

The present disclosure discloses a galvanometer unit, a preparation method thereof, a scanning mirror and a radar system. The galvanometer unit comprises a first substrate and a second substrate which are bonded, the second substrate comprises a galvanometer structure accommodated in a cavity structure, the galvanometer structure has a rotation axis, the first substrate comprises an electrostatic driving structure and a flat plate electrode which is arranged to face the second substrate and is insulated from the electrostatic driving structure, the electrostatic driving structure drives the flat plate electrode to reciprocate in a first direction, the flat plate electrode comprises a first main electrode and a second main electrode which are located on different sides of the rotation axis, and during the reciprocation of the flat plate electrode driven by the electrostatic driving structure, the overlapping area of the first main electrode and the second main electrode with the galvanometer structure changes, so that the electrostatic attraction force acting on the galvanometer structure changes, and the galvanometer structure is driven to rotate along the rotation axis.

This system is directed to an orbital angular momentum generator which can include an AOD; a beam shaping optic assembly; a log-polar optic; a Fourier lens; and, wherein the orbital angular momentum generator is configured to produce pulse shaping according to the application of a quadratic waveform chirp that corresponds to one or more OAM modes. The system can include an ultrashort pulsed laser; a log-spiral transformation assembly; an AOD; an ellipse generator; a λ / 2 plate; and, wherein the optical system is configured to provide for multiple coherent spiral beams with control of amplitude and relative phase. The system can include an ultraviolet orbital angular momentum generator comprising: a femtosecond pulsed laser; a crystal configured to provide a collinear phase-matching; and can provide a UV OAM source for imaging with high resolution and quantum information. The AOD can be replaced with a scanning mirror and configured to add a linear phase gradient.

The application relates to a high-precision optical alignment assembly method of a scanning mirror, and belongs to the technical field of laser radar manufacturing equipment, and solves the technical problems of insufficient precision, no compensation for glue shrinkage, low efficiency and high cost of special equipment in the existing scanning mirror assembly. Based on the light reflection principle, the method characterizes the included angle between the scanning mirror and the motor shaft through light path amplification offset, constructs an optical alignment system by using point laser, mirror group and scale receiving plate, completes coarse adjustment and fine adjustment by cooperating with the scanning mirror adjustment jig, makes the positions of the laser spots on the scale receiving plate coincide after the motor rotates 180 degrees, and then completes UV glue curing through the light curing device, and realizes high-precision assembly by combining the glue shrinkage compensation mechanism and the quantitative verification standard. Through the optical alignment method of light path amplification offset, the quantitative adjustment, the verification standard and the glue shrinkage compensation mechanism are combined, high-precision assembly of the scanning mirror and the motor shaft is realized, the glue shrinkage preset offset compensation scheme is established, and the angle offset problem of UV glue curing shrinkage is avoided.

An optical device comprises a plurality of optical components comprising at least one primary mirror and further comprising at least one scanning mirror component and / or at least one spatial light modulator and / or at least one digital mirror, wherein the plurality of optical components are configured to direct light from an input / output module to an objective module and from the objective module to the Input / output module and to manipulate a position and / or pattern of the light; and a mono-block structure In which the plurality of optical components is mounted, wherein the mono-block structure is a continuous single structure having walls and a base.

The utility model discloses a laser glass cutting, drilling and splitting all-in-one machine structure which comprises a base and a supporting structure, a horizontal sliding table is arranged on the base, a horizontal moving seat moving along the horizontal sliding table is arranged on the horizontal sliding table, and a rotating platform is rotationally connected to the horizontal moving seat through a rotating shaft. A cutting lens is arranged above the rotating platform through a supporting structure, a scanning lens is arranged on one side of the cutting lens side by side, a first reflecting mirror adjusting base is installed above the cutting lens, the first reflecting mirror adjusting base is connected with cutting drilling incident laser and vertically and downwards conveys the laser to the cutting lens, and the scanning lens is connected with a second reflecting mirror adjusting base. And the reflector adjusting seat II is connected with scanning incident laser and transmits the scanning incident laser to the scanning lens. According to the utility model, the functions of glass cutting, drilling and splitting are integrated together, and two functions required by processing can be realized by using the same equipment, so that the processing is more flexible and convenient, and the processing efficiency is improved.

The claims generally describe an apparatus for spatial image and video capture comprising a micro-electromechanical system (MEMS) scanning mirror. The apparatus comprises at least one adaptive MEMS micromirror, a first optical subsystem configured to: receive light from a first portion of an environment to direct light to the at least one adaptive MEMS micromirror; and a second optical subsystem configured to: receive light from a second portion of the environment to direct light to the at least one adaptive MEMS micromirror. The apparatus further comprises control circuitry that positions the MEMS micromirror to direct light from the first optical subsystem and light from the second optical subsystem to the at least one sensor. The apparatus generates image data based at least in part on the received light.

Device (100, 200, 300, 400, 500, 600, 700, 2000) that includes the following: a reflective section (102, 502, 602); a frame arranged at least partially around the reflective section (104, 504, 604); a drive coil (112, 512, 612) for receiving a first electric current to induce a movement of the reflecting section about a first axis in response to the received electric current; and a sensing coil (114, 514, 614) which is at least partially arranged around the drive coil and is physically separated from the reflecting section, wherein the induced motion serves to induce a second electric current in the sensing coil, wherein the second electric current serves to indicate a position of the reflecting section around the first axis (220, 720), wherein the drive coil is located on the reflective section and the sensing coil is arranged on the frame.

A scanning mirror system (1100) includes a MEMS scanning mirror assembly (310) including a reflective surface (334) configured to reflect light from two different light sources. One light source (308a) is a source for a main beam (312) that forms a probe beam upon reflection by a reflective surface. The other light source (158, 502) is a light source for a secondary beam (400) that forms a mirror position reference beam (402) upon reflection by a reflective surface (334). The system (1100) also includes a position sensitive detector (PSD) (160) configured to detect incident light of the mirror position reference beam (402), where the PDS (160) is configured to generate a feedback signal (1704) indicative of a position at which the mirror position reference beam (402) is incident on the position sensitive detector (160) and to send the feedback signal (704) to the controller (1700). The controller is configured to generate a drive signal in response to a beam direction input signal and a feedback signal. The scanning mirror system also includes a mirror mover mechanism (1708) configured to be controlled by a drive signal (1706) from the controller (1700) to adjust a position of the MEMS mirror reflective surface (334) to control a direction of the probe beam.

The invention relates to the technical field of microscopy optics, in particular to a spot scanning confocal adjusting system and method, light emitted by a light source is parallel light beams, the divergence angle is smaller than 1mrad, the light beams reach a galvanometer through a spectroscope, reach a target object through a scanning mirror set and an objective lens, return after being reflected by the target object, pass through the spectroscope capable of rotating, and then pass through a scanning mirror set. After being reflected, the laser reaches the confocal hole through the focusing lens; the confocal hole is located at the rear focus of the lens, and confocal imaging is achieved. According to the invention, through the rotatable spectroscope, the imaging condition of the target object at the confocal hole position can be observed by one camera at the same time. The technical problem that the position of the confocal hole is difficult to find if the initial position of the confocal hole is not within the view field range of the camera due to the fact that the confocal hole is small, a camera with a high amplification factor needs to be selected for clearly seeing the confocal hole and the image plane range which can be observed by the camera is very small in the debugging process is solved.

The invention relates to the technical field of photoacoustic microscopic imaging, and particularly discloses a solid-state photoacoustic microscopic imaging device and method based on a PLD and an MEMS scanning mirror, microscopic imaging is carried out by combining a pulse laser diode and a double-axis MEMS galvanometer, the low-cost pulse laser diode is used for replacing a solid-state laser, the double-axis MEMS galvanometer is used for replacing a mechanical scanning structure, and the device and the method are simple and convenient to operate. Miniaturization and low cost of the photoacoustic microscopic imaging device are realized from a hardware structure; meanwhile, the invention provides a dynamic time sequence triggering optimization scanning algorithm based on Monte Carlo and greedy algorithms, so that the problems of spatial non-uniform sampling and image distortion caused by resonant motion characteristics of the biaxial MEMS galvanometer are solved; a deep learning technology is adopted to perform image enhancement on the obtained microscopic image, so that the problem of image quality degradation caused by low light intensity of a pulse laser diode is solved.

The utility model discloses an operation device of a reciprocating scanner, and relates to the technical field of non-contact scanners. The device comprises a base and an operation assembly, wherein one end of the base is fixedly connected with a support frame. According to the utility model, the operation assembly and the mounting block are arranged, the servo motor is used for driving the circular plate to rotate, the connecting rod on the sliding block is used for driving the linkage rod to move, the linkage rod is used for driving the mounting block to slide on the matched sliding rod in a reciprocating manner, and the scanning lens is used for scanning an object on the base in a reciprocating manner; the detection efficiency and accuracy are improved, and the reliability of a scanning result is enhanced; by arranging the adjusting screw rod, the adjusting screw rod can be rotated to further drive the sliding block to move in the sliding groove, the reciprocating motion distance of the mounting block on the matched sliding rod is adjusted by adjusting the position of the connecting rod and adjusting the motion trail of the linkage rod, and the motion of the mounting block on the matched sliding rod is effectively adjusted according to an object needing to be scanned; and the applicability of the scanning lens is higher.

The application discloses an infrared micro scanning lens displacement testing system and method, which comprises the following steps: self-calibrating a lens to be tested; focusing an infrared sensor, and inputting a digital video image of the infrared sensor with the adjusted focal plane into a display control testing unit; selecting a target based on a target generating unit, and selecting a target frequency according to a set multiple of a sampling frequency; adjusting a differential black body temperature of the target generating unit to a non-saturation imaging interval of the infrared sensor, testing a first center position of target imaging of the lens to be tested; adjusting the lens to be tested to a position after micro scanning, and testing a second center position of target imaging of the lens to be tested again; and determining a micro displacement variation of an image plane of the lens to be tested before and after micro scanning based on the first center position and the second center position. The application provides a micro scanning system process detection means, and provides original data support and testing means for a system to obtain a high-quality super-resolution reconstructed image.

A compact confocal scanning laser ophthalmoscope comprising a MEMS scan mirror with a compact scan head, for use with small animal subjects. The scan head is connected to the source, detector and control electronics by flexible optical and electrical umbilicals and includes a zoom lens to provide both a wide field of view and high resolution imaging of the retina using a range of imaging modalities.

One example provides a method enacted on a scanning display device comprising an illumination source, and a scanning mirror system including a sense circuit coupled to a scanning mirror. The method comprises operating the scanning mirror system using a drive signal while operating the illumination source to thereby project an image, obtaining a control parameter based at least upon an output of the sense circuit, and comparing the control parameter to a noise threshold condition. The method further comprises, when the control parameter does not meet the noise threshold condition, continuing operating the scanning mirror according to the drive signal. The method also comprises, when the control parameter meets the noise threshold condition, adjusting the drive signal to form an adjusted drive signal to change a trajectory of the scanning mirror.

This utility model belongs to the technical field of oracle bone translation assistance, specifically relating to an auxiliary device for multilingual intelligent oracle bone translation. It includes a base, with a concave frame fixedly connected to the upper end of the base. The left and right ends of the concave frame are movably connected to the left and right sides of a threaded rod, respectively. The threaded rod is threadedly connected to a mounting bracket with a threaded hole at its lower end. Through the cooperation of the electric telescopic rod body, connecting frame, toothed plate, gear, rotating shaft, L-shaped plate, and scanning bracket, this utility model enables the recognition scanning lens body to rotate downwards around the rotating shaft into the protective housing after use, thus achieving protection for the recognition scanning lens body in idle state. The cooperation between the fixed plate, limiting rod, and L-shaped bracket allows for convenient adjustment of the positions of the two pressure plates according to the size of the document to be scanned.

The present application relates to the field of spectral imaging, and especially to a ridge stepped Fabry-Perot interferometric imaging spectrometer, comprising a scanning mirror, a telescope objective, a Fabry-Perot array interference system and a detection system, the scanning mirror is located on the object focal plane of the telescope objective, and performs lateral push scanning on a target light field; the telescope objective adopts an image far field optical path structure, and is used for collecting the target light field and imaging the target light field in an FP resonant cavity of the Fabry-Perot array interference system; the Fabry-Perot array interference system is located on the image focal plane of the telescope objective, and comprises parallel plates and a ridge stepped mirror, the step height of the ridge stepped mirror is in a decreasing distribution from the middle to both sides; the detection system is located in the exit direction of the Fabry-Perot array interference system, and is used for imaging the interference light field modulated by the Fabry-Perot array interference system to obtain an interference image array. The present application has the advantages of small volume, light weight, compact structure, static state, stability, reliability and the like.