80 results about "Optical calibration" patented technology

The invention relates to the technical field of semiconductor material photoelectric detection, and discloses a whole-course calibration method of a microwave photoconductive attenuation tester, which comprises the following steps: steady-state optical calibration: establishing reference mapping from light intensity to absolute carrier concentration; performing sweep frequency perturbation measurement at each concentration working point to obtain multiple groups of complex response data; separating an instrument transfer function from sample differential response sensitivity by adopting a system identification algorithm; an integral differential sensitivity reconstruction curve is converted into an absolute calibration model by using an anchor point; starting closed-loop feedback control to lock a specific phase, and verifying the model; and outputting an absolute calibration model and an instrument transfer function as a static reference and a dynamic operator. According to the invention, the absolute concentration anchor point is established through steady-state optical calibration, integral reconstruction is carried out on the differential response sensitivity decoupled by dynamic frequency sweep measurement, and finally, the anchor point is utilized to determine the integral constant, so that the accuracy and reliability of carrier concentration quantitative analysis are improved.

The utility model discloses hybrid bonding equipment based on visual alignment, which belongs to the field of bonding processing equipment and comprises a bonding assembly, a first displacement mechanism, a second displacement mechanism, a first visual assembly, an optical calibration assembly, a second visual assembly and a bearing table. According to the technical scheme of the utility model, the position coordinates of the calibration point, the chip to be bonded and the mark point on the target chip can be accurately obtained through the corresponding arrangement of the optical calibration assembly, so that the compensation position information between the two chips can be accurately obtained, and the visual alignment of the two chips before hybrid bonding can be realized. The hybrid bonding equipment provided by the utility model is compact in structure, convenient to use, and capable of accurately completing bonding of a to-be-bonded chip and a target chip on a wafer and accurately realizing visual alignment between the to-be-bonded chip and the target chip before hybrid bonding, so that the alignment precision during hybrid bonding of the chips is effectively ensured, errors in the bonding process are reduced, and the production efficiency is improved. And the quality of a chip product is improved.

The invention discloses an orchard unmanned aerial vehicle multispectral image noise restoration method based on a generative adversarial network, and relates to the technical field of multispectral image noise restoration, and the method comprises the steps: synthesizing a noisy sample containing stripes, photon particles, thermal noise, Rayleigh, shielding, compression artifacts, overexposure and waveband crosstalk on a noise-free reference image through a conditional generative adversarial network; a crosstalk matrix T obtained through optical calibration is introduced; based on the canopy / soil / sky semantic partition, main-cooperation-subdivision level superposition is implemented; generating hierarchical labels by taking energy conservation consistency and thermal noise correlation as thresholds; a branch and region self-adaptive repair module corresponding to classification is arranged in the image-to-image generative adversarial network, and joint loss training containing T regularization is adopted; and outputting the repaired image subjected to physical consistency checking. The method gives consideration to visual quality and spectral fidelity, inhibits cross-band pollution, improves the stability of indexes such as NDVI and NDRE, and is suitable for precision agricultural monitoring.

Optical calibration structures for optical probes, optical probe systems that include the optical calibration structures, and methods of calibrating a plurality of optical probes. The optical calibration structures include a reflector, an obstructive structure, and an optical detector. The optical probe systems include the optical calibration structure, a chuck, an optical assembly, and a signal generation and analysis assembly. The methods include methods of operating the optical probe systems and / or methods of utilizing the optical calibration structures.

The application discloses a display screen brightness and chrominance joint compensation mapping generation method, and belongs to the technical field of Micro-LED display correction and optical calibration. The method solves the problem that brightness reproduction and cross-gray-scale chrominance drift are difficult to be considered in existing white field gray-scale correction, and comprises the following steps: acquiring red, green and blue single-channel full-gray-scale first optical measurement data and equivalent white field full-gray-scale second optical measurement data; for a target gray scale, equivalent RGB initial code values are determined according to the second optical measurement data, a limited RGB candidate driving domain is constructed in combination with a preset single-channel search radius and a maximum deviation amount between channels; candidate combined three-stimulus value outputs are estimated based on single-channel three-stimulus value increments and corresponding gray-scale three-stimulus value superposition; a joint target function is constructed by taking the target brightness and a preset reference chrominance as a reference and adding adjacent gray-scale driving code continuity constraints, and an optimal solution is solved as a compensation RGB driving code value; and a gray scale to compensation code lookup table is generated by traversing all the gray scales. The method is used in the field of information display.

The invention discloses a modularized automobile intelligent light-emitting sealing strip system and a control and manufacturing method thereof. The system comprises: a base module having a built-in channel; the optical engine module is integrated in the built-in channel in a pluggable mode and comprises a partition light source unit, a gradient light guide body and a light sensor; and a light-transmitting outer cover module. According to the intelligent dodging control method, brightness distribution is sensed in real time through a sensor network, light source output is adjusted based on dynamic feedback and a partition cascade compensation algorithm, and self-adaptive optical compensation is achieved. According to the integrated manufacturing method, high-efficiency and high-consistency production is realized through optical engine prefabrication, matrix co-extrusion molding, modular integration and an online optical calibration process. According to the invention, the inherent contradiction between the light emitting function and the sealing function is solved, and high-reliability, high-uniformity and intelligent dynamic illumination and interaction for the vehicle are realized.

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 invention relates to the technical field of computer vision, and discloses a self-adaptive CCD visual analysis system for special-shaped hardware, and the system comprises a dynamic optical calibration module, an edge detection module, a dynamic region of interest segmentation module, a self-adaptive parameter analysis module, a coordinate construction mapping module and a global grabbing pose determination module. Collecting an initial image of the hardware and performing optical calibration; performing edge detection on the calibrated image to obtain a complete contour of the hardware; performing region segmentation on the complete contour to obtain a dynamic region of interest; performing adaptive parameter analysis on the dynamic region of interest to obtain accurate characteristic parameters; constructing a workpiece coordinate system, and mapping the accurate feature parameters to the workpiece coordinate system to obtain an associated feature data set; global grabbing pose information is determined based on the grabbing point definition rule and the associated feature data set, and the problem that the positioning precision is poor due to the fact that a visual analysis system is difficult to adapt to workpiece reflection changes and complex structures can be solved.

The invention relates to an optical axis calibration method and system, a ghost image measurement method and computer equipment. The method is applied to an optical axis calibration system comprising an image acquisition device which is subjected to pose adjustment by a first adjustment mechanism and an adjustment jig which is subjected to pose adjustment by a second adjustment mechanism and is provided with a display module to be tested, and comprises the following steps: controlling the first adjustment mechanism and / or the second adjustment mechanism to perform rotation adjustment, aligning a cross calibration image displayed by the display module to be tested with an image reference cross of the image acquisition equipment; a second adjusting mechanism is controlled to perform translation adjustment, so that multi-order ghost images formed by the ghost image calibration image displayed by the display module to be tested in the picture of the image acquisition equipment are regularly distributed; and the first adjusting mechanism is controlled again to perform rotation adjustment, so that the cross calibration image displayed by the display module to be tested is aligned with the image reference cross of the image acquisition equipment. By adopting the method, ghost image interference can be reduced, the optical calibration accuracy is optimized, and the ghost image measurement accuracy is improved.

The embodiment of the utility model provides a graphite electrode surface detection system which comprises a detection table used for supporting the whole detection system; the guide rail sliding mechanism is arranged on the detection table, the guide rail sliding mechanism comprises a ball lubricating groove, the guide rail sliding mechanism is provided with a reinforcing rib plate, and the guide rail sliding mechanism is provided with a damping elastic gasket; the movable bracket is mounted above the guide rail sliding mechanism; the detection probe fixing seat is connected with the movable bracket; the optical calibration module is arranged at one end of the detection table; wherein an automatic lubricating oil supplementing device is arranged in the ball lubricating groove; the cross section of the reinforcing rib plate is I-shaped; the lower end of the optical calibration module is in bolted connection with a leveling base which is used for finely adjusting the height of the optical calibration module. Through the scheme of the embodiment of the invention, the vibration influence in high-speed detection can be reduced.

The invention relates to the technical field of optics, in particular to an optical calibration system calibration method, an optical simulation unit and an optical calibration system.The method comprises the steps that the optical simulation unit is transferred to a preset fixing station; determining a first relative pose relation of the vision measurement module relative to the calibration piece and determining a second relative pose relation of the optical measurement module relative to the calibration piece; and determining a system calibration relationship between the vision measurement module and the optical measurement module based on the first relative pose relationship and the second relative pose relationship. The invention mainly aims to provide a calibration method of an optical calibration system, which is used for calibrating the position of an optical device in the optical calibration system.

This invention relates to the field of semiconductor manufacturing technology, and particularly to a method and structure for SnBi ultrasonic low-temperature hot-press bonding based on a porous metal framework. The method includes the following steps: S1: Preparing a porous metal buffer layer with interconnected micropores on the bonding surface of a first connector; S2: Mounting the first connector and a second connector, and placing Sn-Bi low-temperature solder between the bonding surfaces of the porous metal buffer layer and the second connector, aligning the solder and the porous metal buffer layer using optical calibration during mounting; S3: Performing ultrasonic-assisted variable pressure hot-press bonding on the mounted components, including a sequential ultrasonic-assisted wetting and activation stage and a hydrostatic forced infiltration and filling stage; S4: Rapidly cooling under pressure until the solder solidifies and forms a dense composite interconnect structure. This invention can significantly improve the mechanical toughness and electrical and thermal conductivity of the solder joints during low-temperature hot-press bonding with Sn-Bi-based low-temperature solder.

The invention relates to an optical calibration system (30), comprising: - a support (32), - an imaging device (34) mounted on the support (32), the imaging device (34) comprising: • a camera comprising an image generation unit and an objective, • a collimation unit suitable to emit a collimated beam convoying an image of a so-called collimation object, the imaging device (34) being selectively switchable between two modes of operation among: • an autocollimation mode in which both the image generation unit and the collimation unit are activated, and • an imagery mode in which only the image generation unit is activated.

A visual guidance system for use in a surgical procedure include a calibration operation of a tip of a surgical drill. In particular, the system includes capturing images of a drill tip and generating a reconstruction volume shape of the drill tip to enable tracking of the drill tip. The system captures images of the drill tip in tilting motion to determine cutting edge contour data of the drill tip. The system further captures images of the drill tip in rotation and identifies point cloud data of the drill tip. The system further includes generating a three-dimensional surface data of the drill tip, a cutting plane, and a cutting edge contour of the drill tip. Given the three dimensional surface data and plane data, the system further generates guidance data for providing a navigation on surgical procedure using three-dimensional graphical representation of the surgical drill.

The invention discloses a triple-band optical auto-calibration fundus imaging apparatus and method for robotic ophthalmic OCT imaging, comprising: a central optical path including a fundus lens, short-pass dichroic mirror, intermediate optical calibration module I, long-pass dichroic mirror, intermediate optical calibration module II, and infrared camera; two lateral infrared cameras disposed at specific angles relative to the central optical path; an annular light ring surrounding the fundus lens; a visual induction display positioned below the long-pass dichroic mirror; an OCT sample arm with electric lift control; and an OCT optical path beneath the short-pass dichroic mirror. The apparatus captures facial, ocular, and gaze direction data, directing OCT beams through the pupil, eliminating the need for head fixation during robotic ophthalmic OCT imaging. Visual guidance reduces gaze-induced artifacts and automatically adjusts the OCT optical path to accommodate different visual acuities, enhancing robotic ophthalmic imaging efficiency and quality.

The application discloses a positioning method and system combining optical positioning and mechanical positioning, and belongs to the technical field of surgical navigation. The method comprises the following steps: before surgery, high-precision calibration of the system is performed by using an optical calibration method; and during surgery, a pose of a target object is measured by using a non-shielding mechanical positioning method. The non-shielding mechanical positioning method comprises the following steps: according to angles read by encoders at each joint in real time and a kinematic model obtained by using the optical calibration method before surgery, a transfer matrix of the object relative to a reference system is obtained, so that the relative position and attitude of the measured object are calculated. By using the processing scheme, the flexibility of the optical calibration and the accuracy of the mechanical positioning are combined, so that the cost is reduced, and the high absolute positioning precision of the surgery in a narrow space is ensured.

The embodiment of the invention provides a light source position correction system for laser direct writing equipment and related equipment, which are used for saving the production cost and improving the production efficiency of the laser direct writing equipment. The correction system in the embodiment of the invention comprises an optical calibration plate, wherein the optical calibration plate comprises a phase change layer and an interference enhancement dielectric layer; the phase change layer is made of a chalcogenide phase change film material, and the mounting position of the optical calibration plate is relatively fixed with the working space of the laser direct writing equipment; the optical read-write module can emit a first characteristic pulse and a second characteristic pulse; wherein the first characteristic pulse is used for exciting a laser irradiation area of the phase change layer to generate phase change, and a preset mark in an amorphous state is generated; the second characteristic pulse is reflected in the sensor camera to form an observation image with a preset mark after the interference is weakened by the interference enhancement dielectric layer; the calculation module is used for calculating the position deviation of the light source according to the deviation between the preset mark and the observation image.

Automated calibration of a machine vision system employs a calibration target assembly mountable to a robotic transfer assembly. An inventory management system includes a robotic transfer apparatus, a calibration target assembly, and a stereo vision assembly. The robotic transfer apparatus includes a support assembly and a transfer assembly. The support assembly is configured for repositioning the transfer assembly relative to the support assembly. The transfer assembly is rotatable relative to the support assembly. The calibration target assembly mountable to the transfer assembly and includes optical calibration targets. The stereo vision assembly is configured for imaging the optical calibration targets to generate calibration image data that is processed to generate calibration data for the machine vision system.

The application discloses a kind of multi-line laser radar optical calibration jig, including fixed platform, multi-line laser radar, first fine adjustment platform, second fine adjustment platform, first adjusting arm and second adjusting arm.Fixed platform is used to fix multi-line laser radar, and multi-line laser radar includes first laser emission part and second laser emission part.First fine adjustment platform and second fine adjustment platform are arranged on both sides of fixed platform;First adjusting arm is set on first fine adjustment platform and is aligned with first laser emission part, and second adjusting arm is set on second fine adjustment platform and is aligned with second laser emission part.By first adjusting arm and second adjusting arm control adjustment corresponding laser emission part, simultaneous optical calibration to two laser emission parts is realized.Add fine adjustment platform and adjusting arm, and the optical calibration efficiency of multi-line laser radar is improved, and multiple laser emission parts of multi-line laser radar are simultaneously subjected to optical calibration.

Optical target (20, 20', 20'', 20''') for calibrating a medical imaging device (30), comprising: a target body (40, 40', 40'', 40'''); and at least one conversion structure (50, 50', 50'', 50''', 52', 52'', 54', 54'') formed in and / or on the target body (40, 40', 40'', 40''') and configured to convert light with a first wavelength at least partially into light with a second wavelength different from the first wavelength; wherein at least the conversion structure (50, 50', 50'', 50''', 52', 52'', 54', 54'') is additively manufactured, wherein the target body (40, 40', 40'', 40''') is embedded in a dispersion element (55).

The invention discloses a high-precision circuit board line exposure positioning calibration device, and relates to the technical field of circuit board line exposure, the high-precision circuit board line exposure positioning calibration device comprises a frame body and an exposure module, a top frame is arranged on one side of the top of the frame body, and a calibration assembly used for assisting optical calibration is installed in the top frame; and the calibration assembly comprises a sliding base, a second servo motor, a first lead screw, a threaded block, a second lead screw and a third servo motor, the second servo motor is arranged in the sliding base, and the first lead screw is installed at the output end of the second servo motor. According to the high-precision circuit board line exposure positioning calibration equipment, through the design of the driving adjusting assembly, the positions of the two limiting assemblies can be conveniently exchanged through rotation, a user can conveniently carry out single-face or double-face exposure treatment on a circuit board according to the use requirement, the situation that the user needs to manually adjust the exposure face during double-face exposure is avoided, and when double-face exposure is carried out, the operation is convenient. Wherein one group of limiting assemblies can be synchronously realized when moving downwards to feed the to-be-exposed circuit board.

This utility model discloses an automatic camera intrinsic parameter calibration device, relating to the field of camera calibration technology. The automatic camera intrinsic parameter calibration device includes an optical calibration platform, a calibration frame, a first translation component, a second translation component, a rotation component, a calibration plate, a camera, and a laser emitter. The camera and laser emitter are mounted at the bottom of the first translation component, and the first translation component is used to move the camera and laser emitter. The rotation component is mounted on the second translation component, and the calibration plate is mounted at the top of the rotation component. The second translation component is used to move the rotation component and the calibration plate, and the rotation component is used to rotate the calibration plate. The laser emitter projects laser stripes onto the calibration plate, and the camera captures an image of the calibration plate. This utility model can achieve automatic calibration at all positions and different poses, solving the problems of poor repeatability and low efficiency of manual calibration.

The application is applied to the field of image correction, and discloses a method, device, electronic equipment and medium for correcting microscope images. The method comprises the following steps: acquiring a to-be-corrected image photographed by a digital microscope under a preset scene. A three-dimensional color lookup table, a brightness correction function and a definition restoration coefficient corresponding to the digital microscope are acquired. The three-dimensional color lookup table, the brightness correction function and the definition restoration coefficient are acquired by referring to a reference image. The reference image is acquired by photographing a preset optical calibration piece under the preset scene by the digital microscope. The three-dimensional color lookup table, the brightness correction function and the definition restoration coefficient are used for respectively correcting the color, brightness and definition of the to-be-corrected image, so that a target image after correction is obtained. Thus, the to-be-corrected image can be automatically corrected in the color dimension, brightness dimension and definition dimension, the adaptability is high, and the correction effect of the microscope image is improved.

A sensor calibration system of a vehicle is provided, comprising an optical sensor configured to generate two-dimensional optical calibration data and a LiDAR sensor configured to generate three-dimensional intensity calibration data. The system extracts one or more optical images from the optical calibration data and projects one or more portions of the intensity calibration data onto one or more optical image planes corresponding to the one or more optical images to form one or more intensity images. The system detects a set of points in the one or more intensity images and another set of points in the one or more optical images corresponding to one or more environmental features. The system creates a plurality of pairings wherein each pairing comprises corresponding points from the two sets of points and computes an alignment between the optical sensor and the LiDAR sensor based on a subset of the plurality of pairings.

The present application relates to the field of medical devices, in particular to an intelligent intraocular lens implant navigation system and method with adaptive optical calibration, comprising: a microscope module for collecting intraocular real-time image data; an adaptive optical system module connected with the microscope module for real-time evaluation of intraocular tissue optical aberration distribution and correction; a three-dimensional deep learning motion compensation module for predicting eye movement and compensating for micro-motion interference; a registration algorithm module for establishing spatial registration between OCT and intraocular imaging systems; an augmented reality projection module for superimposing registration guide lines on surgical microscope imaging; an intelligent intraocular imaging system for identifying intraocular tissue structure and instrument position, through multi-modal fusion perception, deep learning intelligent analysis, adaptive optical calibration and augmented reality guidance, precise implantation of intraocular lenses is achieved, and practical application shows that the lens implantation position accuracy can be improved to ±0.1mm.

The invention relates to the technical field of optical display, and discloses a light emitting direction regulation and control method and system based on a pixel microlens array, and the method comprises the steps: collecting the pixel distribution specification and physical size parameters of a vehicle-mounted head-up display panel, constructing a multi-electrode micro-fluidic lens array and carrying out optical calibration in a full temperature range; monitoring eye positions of the driver in real time, and predicting a future movement track; performing ray tracing calculation; performing direction vector calculation; reversely solving the target direction into the control voltage of the micro lens through the physical constraint neural network; establishing an inter-pixel coupling matrix and performing adaptive updating; rolling optimization and disturbance compensation are carried out; performing virtual measurement state estimation and voltage application; performing multi-objective optimization and fault self-healing management; the control strategy can be dynamically adjusted according to the head position change of the driver, the priority of the display content and the environmental condition.

The invention provides an optical angle adjustable lighting system and a control method, belongs to the technical field of lighting, and is used for solving the problems that existing lighting equipment is tedious in angle adjustment, poor in outdoor reliability and insufficient in multi-optical parameter collaboration. The system comprises a control unit, an LED shunt group, an execution unit and the like. The control unit is provided with a multi-gear dial switch and an MCU (Microprogrammed Control Unit), the multi-gear dial switch is used for pre-storing optical calibration parameters, the LED shunt group comprises a cold / warm white LED and an integrated 90-degree large-angle and 45-degree small-angle light packet, a shift-free lens is synthesized into a middle angle, and the execution unit adopts an MOS (Metal Oxide Semiconductor) tube array to adjust the current of the LED shunt. The control method comprises the steps of power-on self-test, day and night target dimming judgment by the detection unit and the sensing module, remote parameter adjustment compensation by preferentially combining optical parameter calibration, angle color temperature illumination adjustment by PWM control current, energy consumption monitoring, intelligent heat dissipation, graded fault alarm and regular calibration. The angle is adjusted without disassembly, the outdoor reliability is improved, multiple parameters are stably controlled, the energy consumption and the operation and maintenance cost are reduced, the service life is prolonged, and the LED lamp is suitable for industrial, commercial and road illumination.

A method of calibrating an illumination system of a lithographic system, the method comprising: applying a known misalignment to the illumination system; acquiring measurement data representing a measurement illumination pupil generated by the illumination system; and determining an actual misalignment based on the measured data. Determining the actual misalignment may include obtaining estimated data representative of an estimated illumination pupil generated by the illumination system, the estimated illumination pupil including a known misalignment, and calculating a difference between the estimated data and the measured data, where the calculated difference is representative of the actual misalignment.

The application relates to the technical field of semiconductor material photoelectric detection, and discloses a full-range calibration method of a microwave photoconductive decay tester, which comprises the following steps: steady-state optical calibration, establishing a reference mapping of light intensity to absolute carrier concentration; performing frequency sweep perturbation measurement at each concentration working point to obtain multiple sets of complex response data; adopting a system identification algorithm to separate the instrument transfer function and the sample differential response sensitivity; integrating the differential sensitivity reconstruction curve, converting the anchor point into an absolute calibration model; enabling closed-loop feedback control to lock a specific phase, verifying the model; outputting the absolute calibration model and the instrument transfer function, and making a static reference and a dynamic operator. According to the application, the absolute concentration anchor point is established through steady-state optical calibration, the differential response sensitivity decoupled by dynamic frequency sweep measurement is integrated and reconstructed, and finally the integral constant is determined by using the anchor point, so that the accuracy and reliability of carrier concentration quantitative analysis are improved.

The utility model discloses an optical calibration unit and an optical data transmitter, relates to the technical field of optical communication, the optical calibration unit comprises a collimation light source and a calibration prism, the calibration prism comprises a hollow cylinder used for accommodating the collimation light source and an optical processing surface, the optical processing surface is located at one end of the hollow cylinder, and the collimation light source is arranged in the hollow cylinder. The optical processing surface comprises a first optical surface, a second optical surface and a third optical surface, the first optical surface is hollow, an angle alpha 1 is formed between the second optical surface and the optical calibration unit mounting surface, an angle alpha 2 is formed between the third optical surface and the optical calibration unit mounting surface, and alpha 1 is smaller than alpha 2; a light beam emitted by the collimation light source is divided into three beams by the calibration prism, the first light beam is horizontally emitted from the first optical surface, the second light beam is refracted on the second optical surface and emitted at an angle beta 1, the third light beam is refracted on the third optical surface and emitted at an angle beta 2, and beta 1gt; beta2.