134 results about "Scanning mirror" patented technology

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.

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 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.

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.

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.

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.

An oblique plane microscopy system, comprising: a first optical system comprising a first objective lens, the first optical system configured to deliver excitation light in the form of an oblique light sheet to an object and gather fluorescence light from the object in response to the excitation light sheet; an excitation light coupling unit configured to couple the excitation light to an optical path of the first optical system; and at least two synchronised scanning mirrors arranged on the optical path, configured to scan the excitation light across the sample and de-scan the fluorescence light

A wireless optical power transmission system comprises a transmitter and a receiver, the transmitter comprising a laser emitting a light beam, a scanning mirror for directing the light beam towards the receiver, and a control unit receiving signals from a detection unit on the receiver and controlling the light beam power and the scanning mirror. The receiver has a photovoltaic cell with a bandgap energy of 0.75-1.2 eV, having a plurality of conductors on the light beam receiving surface. A cover layer of a material blocking illumination having a wavelength outside the wavelength of the laser is provided on the photovoltaic cell. The cover layer can have an anti-reflective coating on its top surface and bottom surface. The detection unit thus generates a signal representing the power of the laser beam impinging on the receiver independent of illumination other than the light beam. The control unit can thus maintain the laser power impinging on the receiver.

New systems for the wireless recharging of the batteries of game controllers, without the need for placing the game controller on a dedicated charging device such as an inductively coupled charging pad or its charging docking station. Wireless charging can continue even when the gaming controllers are being moved, when in use during the gaming session, and certainly when the controller is left by the user in some random location in the area in which the system is installed. A transmitter beams optical power, such as a laser beam, to an optical power receiver located on the controller itself, which, using a photovoltaic cell and an appropriate voltage converter, converts the optical beam power to a current for charging the battery. A beam aiming mechanism, such as a scanning mirror, is provided to ensure correct tracking of the game controller, according to the outputs of a beam tracking application.

The invention discloses a laser ultrasonic detection system and a laser processing quality detection method, and belongs to the technical field of laser processing quality detection.The laser ultrasonic detection system comprises a first laser transmitter, a spectroscope, a scanning lens, a second laser transmitter, a detection lens, a laser ultrasonic receiver, a third laser transmitter and a mobile platform; the first laser emitter emits a first laser beam, the first laser beam passes through the spectroscope and the scanning lens and then irradiates a workpiece, the second laser emitter emits a second laser beam, and the second laser beam passes through the detection lens and irradiates the workpiece. Reflected light beams, irradiated to the workpiece, of the second laser beam and the third laser beam are received by the laser ultrasonic receiver, defect detection is conducted on the workpiece in a non-contact detection mode, online detection can be achieved, ultrasonic signals are transmitted through laser, and the anti-interference capacity is high.

A LiDAR and an assembly method therefor, a LiDAR electric motor, a mobile platform, and a vehicle. The LiDAR (4000) comprises a housing assembly (100), a main circuit board (400), an opto-mechanical assembly (200), and a scanning mirror assembly (300), wherein the housing assembly (100) comprises a bottom wall (111); the main circuit board (400) is arranged on the bottom wall (111) and extends in a first direction (X); the opto-mechanical assembly (200) is mounted on the bottom wall (111), and the opto-mechanical assembly (200) is electrically connected to the main circuit board (400); the scanning mirror assembly (300) is mounted on the bottom wall (111), and the scanning mirror assembly (300) is connected to the main circuit board (400); and the opto-mechanical assembly (200) and the scanning mirror assembly (300) are located on the same side of the main circuit board (400) and are arranged in the first direction (X).

The invention provides a detection device of a scanning device and a detection method of the 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 present application relates to a kind of linear array swing scan type optical satellite on-orbit geometric calibration method based on equivalent surface array, comprising the following steps: step 1, by image matching or artificial measurement method, from high-precision digital orthophoto map and digital elevation model, obtain the ground control point on the single pendulum satellite image;Step 2, according to the geometric relationship between the rotating scanning mirror, motion compensation mirror and linear array CCD in satellite imager and its imaging process, construct linear array swing scan type optical satellite geometric calibration model based on equivalent surface array;Step 3, using ground control point, solve linear array swing scan type optical satellite geometric calibration parameter.The present application can realize linear array swing scan type optical satellite high-precision on-orbit geometric calibration, thereby providing support for linear array swing scan type optical satellite image high-precision geometric processing.

Projection device and control method of projection device. Reduce scanning frequency. The projection device of the invention has: a light emitting display panel in which a plurality of pixels having light emitting elements are arranged in a matrix; a scanning mirror that reflects image light emitted from the light emitting display panel toward a scanned surface and scans the reflected image light two-dimensionally on the scanned surface; and a projection optical system that guides the image light from the light emitting display panel to the scanning mirror.

This invention provides a method, apparatus, and computer-readable storage medium for transmitting video data from tissue slices. The method includes: determining a first scanning range of the scanning lens based on a first physical magnification; determining a first region based on a first scanning reference point of the scanning lens and the first scanning range; controlling the scanning lens to scan the first region to obtain first scan data; encoding the first scan data according to a preset format to obtain first video data; sending the first video data to a monitoring access server; and then, through the monitoring access server, transmitting the first video data to a tissue slice display system via a video network, so that the tissue slice display system can display the first video data. This method for transmitting video data from tissue slices reduces the amount of scanned data and ensures transmission efficiency.

Distinct lines of illumination produced by first and second lasers, angularly separated by a selectable angle between 1 and 15 degrees, are swept across a field of view using a scanning mirror, such that an object is sequentially illuminated with a known time delay determined by the angular separation and the mirror's movement. Reflections from the object are detected by corresponding detectors, and data from these events are processed to generate positional information for each illumination. By analyzing the change in object position between the captured data and factoring in a controlled time delay, a velocity measurement of the object is calculated.

A display apparatus having a compact projector is provided. The head-mounted device may have a nose bridge joining the first waveguide and the second waveguide. The first waveguide and the second waveguide may overlap with respective eye-fit regions. The device may include a display projector located in the nose bridge. The display projector may include a display panel that emits image light. The nose bridge may include optics that direct the image light to the first waveguide and the second waveguide. Optical couplers on the first and second waveguides may couple the image light into the first and second waveguides, and may couple the image light out of the first and second waveguides and toward the eye-fit regions. The optics in the nasal bridge may include scanning mirrors, additional waveguides, and / or binocular combined free form prisms.

The invention discloses an optical imaging and ablation probe device based on a hollow scanning reflection assembly. The optical imaging and ablation probe device comprises a first laser transmission module, a second laser transmission module, a hollow scanning reflection module and a direction switching module. The first laser transmission module and the second laser transmission module are used for generating, transmitting and regulating optical imaging laser and ablation laser. The hollow scanning reflection module is provided with a first scanning reflection mirror and a second scanning reflection mirror, reflection and scanning of an imaging laser beam and an ablation laser beam are achieved, and a scanning imaging result is used for assisting laser ablation treatment. The problems that traditional single ablation treatment lacks real-time imaging evaluation, the single-point laser ablation treatment range is small, and the problems that in an existing common-optical-path imaging auxiliary ablation treatment scheme, ablation laser energy is too high, a mirror face is prone to being damaged, and the imaging quality is reduced are solved. And the direction switching module is provided with a third reflector group and a fourth reflector group, so that the function of adjusting the direction from forward scanning to lateral scanning is added, and the requirements of different application scenes are met.

The application provides a collimation system based on a MEMS mirror and a laser radar, the collimation system based on the MEMS mirror comprises: a laser emission unit for emitting a modulated laser beam; a front light beam shaping unit for shaping the laser emitted by the laser emission unit; a MEMS mirror scanning unit for scanning a field of view of a to-be-measured plane after resonant reflection of the light beam shaped by the front light beam shaping unit by using a MEMS mirror; and a rear collimation unit for performing secondary shaping on the light beam reflected by the MEMS mirror scanning unit, so that the edge light beam and the center light beam deflected by the MEMS mirror have equal optical paths at an entrance pupil of the rear collimation unit. The collimation system based on the MEMS mirror can improve the energy coupling efficiency of the system, reduce the beam divergence angle and the system volume, and make the ranging capabilities of the center field of view and the edge field of view uniform.

The utility model relates to the technical field of chip mounters, and discloses a multi-head high-speed scanning mirror of a chip mounter, which comprises a machine head vertical plate, a scanning mirror assembly is arranged on the outer wall of the machine head vertical plate, the scanning mirror assembly comprises a first motor, the first motor is fixedly connected to the outer wall of the machine head vertical plate, and a second motor is arranged on the outer wall of the machine head vertical plate. The output end of the first motor penetrates through the machine head vertical plate to be fixedly connected with a first driving belt wheel, the first motor is started to drive the first driving belt wheel to rotate, then the first synchronous belt moves, and therefore the first synchronous belt drives the lifting plate to move when moving. A vacuum pump set can vertically ascend and descend along with a lifting plate during operation, a suction nozzle can be attached to a placed element, a motor placed on a motor installation opening can drive a rotating belt wheel to rotate, and then a second synchronous belt can drive a scanning mirror module on a movable frame to move; and a plurality of Z-axis suction element images of the head are shot at a high speed for software processing and analysis, so that instant imaging in flight is realized.

The invention discloses a use method of a scanning splicing large-view-field fundus phase imaging device. The scanning splicing large-view-field fundus phase imaging device comprises an illumination light path and a zoom light path. The illumination light path comprises a scanning mirror, a spectroscope and a fundus objective lens, the front side of the scanning mirror is a collimation light source, the rear side of the scanning mirror is the spectroscope, the left side of the spectroscope is the fundus objective lens and a patient fundus, and the right side of the spectroscope is a zoom lens group of a zoom light path and a fundus camera. The scanning mirror is rotated and the focal length of the zoom lens group is adjusted in sequence according to the plurality of scanning sequence groups, so that the fundus camera acquires a plurality of groups of positive defocus state, focusing state and negative defocus state images, then a plurality of local fundus phase diagrams are obtained according to the images, and a complete fundus phase distribution diagram is obtained, namely, the fundus phase distribution diagram has the phase information acquisition capability; and observing microscopic important pathological features according to the fundus phase distribution diagram. Therefore, the design has the capability of acquiring phase information, and microscopic important pathological features can be observed.