338 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 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.

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 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 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.

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.

The invention relates to the technical field of corneal confocal image generation, and provides a corneal confocal image generation method and system and a storage medium, and the method comprises the steps: controlling a laser to emit a laser beam, and then controlling a resonance galvanometer to drive transverse scanning; starting data acquisition when a laser beam scans a first position sensor during forward scanning, and ending data acquisition when the laser beam scans a second position sensor to obtain forward data; during return stroke scanning, when a laser beam scans a second position sensor, data acquisition is started, and when the laser beam scans a first position sensor, data acquisition is ended, and return stroke data is obtained; and finally, the cornea confocal image is generated based on the outbound data and the return data, real position feedback can be obtained through the first position sensor and the second position sensor in the scanning process to overcome the image dislocation problem, and high-speed two-way image dislocation distortion caused by the non-ideal state of movement of the resonance scanning mirror is solved.

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.

SOLUTION: In a wireless optical power transmission system comprising a transmitter and a receiver, the transmitter comprises: a laser emitting a beam; a scanning mirror for steering the beam toward the receiver; and a control unit receiving signals from a detection unit on the receiver and controlling the beam power and the scanning mirror. The receiver has a photovoltaic cell 71 having a bandgap energy of 0.75-1.2 eV, and the photovoltaic cell is provided with a plurality of conductors 72 on a receiving surface of beams 79a - 79g. A cover layer 78 of a material blocking illumination of wavelengths outside that of the laser, is disposed on the photovoltaic cell. The cover layer has anti-reflective coatings on its top and bottom surfaces.EFFECT: The detection unit generates a signal representing the power of the laser beam impinging upon the receiver, independent of illuminations other than that of the laser beam. The control unit thus can maintain the laser power impinging on the receiver.SELECTED DRAWING: Figure 7A

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.

The present application relates to a scanning device of a laser radar and a method for optimizing the structure of the scanning device. The scanning device includes a substrate, a scanning mirror, a driving ring, a fast axis and a slow axis; at least one of the fast axis and the slow axis is a stress equalization structure, and the stress equalization structure includes a single-axis structure or a dual-axis structure. A driving hole is provided on the substrate, the scanning mirror is connected to the driving ring through the fast axis, the driving ring is connected to the substrate through the slow axis, and the scanning mirror is arranged at the center of the driving ring, which is arranged at the center of the driving hole. The above-mentioned device optimizes the structure of the traditional fast axis or slow axis into a stress equalization structure, so that the deformation mode of the fast axis or slow axis is transformed from a torsional mode to a bending mode, thereby reducing the stress magnitude in the stress concentration area during the cyclic motion process, and keeping the stress away from the fatigue failure stress threshold, thereby greatly improving the durability of the non-silicon scanning mirror and thereby improving the working life of the device.

The invention discloses a remote sensing load ultra-large dynamic range radiometric calibration device and method, and relates to the field of radiometric calibration, and the device comprises a driving module, and a light source, a diffuse reflection plate structure, a two-dimensional scanning mirror, an aperture diaphragm, a shutter and a detector which are sequentially arranged according to a light path transmission direction; the two-dimensional scanning mirror, the aperture diaphragm, the shutter and the detector are all connected with the driving module; light emitted by the light source passes through the diffuse reflection plate structure and the two-dimensional scanning mirror and then is subjected to first-time radiation quantity value attenuation, and passes through the aperture diaphragm and then is subjected to second-time radiation quantity value attenuation; the driving module is used for driving the two-dimensional scanning mirror, the aperture diaphragm, the shutter and the detector; the shutter is arranged at the front end of the photosensitive area of the detector; the shutter and the detector are used for detecting the light radiation quantity after two times of radiation quantity value attenuation. According to the invention, the remote sensing load can be subjected to radiometric calibration by using an intense radiometric calibration source such as the sun to obtain the same radiation reference as other in-orbit remote sensing loads, so that the reference unification of remote sensing data is ensured.

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 utility model provides a frameless micro-electro-mechanical galvanometer based on piston type electrostatic comb tooth excitation, which is provided with a bearing frame, a movable part is arranged on the bearing frame, a fixed part is arranged at a position corresponding to the movable part, the fixed part is fixed with the bearing frame, and a reflecting mirror is arranged in the middle of the bearing frame. The reflecting mirror is in coupling connection with the movable part through a beam; the movable part is provided with a first excitation area, the fixed part is provided with a second excitation area, the first excitation area and the second excitation area are respectively provided with a plurality of comb tooth rows, piston comb tooth excitation is formed when potential difference exists between the first excitation area and the second excitation area, and the beam twists to enable the reflecting mirror to turn over. Due to the fact that the piston comb tooth structure is adopted, the S-shaped bending portion is arranged, and meanwhile a frame structure is removed, the structure is simpler, impact and vibration of the MEMS scanning mirror in practical application are enhanced, the MEMS scanning mirror can carry a large mirror surface size, and the problems that the caliber is small, and the effective area is small are solved.

The present application provides a laser flight optical path debugging method and laser processing equipment, the method comprising setting an indicator light beam directed to a scanning mirror, and causing the indicator light beam to irradiate a first reflector in the reverse direction of the optical path; adjusting a third reflector so that the indicator light beam between the third reflector and the second reflector propagates in a vertical direction; installing an optical path positioning device with a light-through hole between the second reflector and the third reflector, and adjusting the position of the optical path positioning device so that the indicator light beam passes through the light-through hole; setting a positioning light beam directed to the first reflector, and causing the positioning light beam to irradiate a scanning mirror in the forward direction of the optical path; and adjusting the first reflector and the second reflector so that the positioning light beam passes through the light-through hole. The laser flight optical path debugging method and laser processing equipment provided by the present application utilize the principle of optical path reversibility to improve debugging accuracy, thereby ensuring that the position accuracy of the flight optical path meets optical requirements.

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.

An optical system is provided which comprises a scanning mirror having a reflective facet, and a plurality of optical elements defining a light beam path from a first location to a second location via plural facet reflections on the facet comprising a relay 5 segment from one facet reflection to a next facet reflection. A method is also provided comprising directing light from a light source along a light beam path from a first location to a second location via plural facet reflections on a rotary reflective facet of a scanning mirror, and relaying one facet reflection to a next facet reflection on the facet while rotating the facet.

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.