19results about How to "Improve focusing efficiency" patented technology

The invention provides an automatic focusing method of an imaging device and an exterior mirror system. The method comprises the following steps: acquiring a working distance between a zoom lens and an imaging target through a distance detection module; determining a focusing search range of the zoom lens according to the working distance, and determining an image acquisition step length according to the working distance and the current focusing definition; and adjusting the zoom lens according to the image acquisition step length, and searching a focusing position in the focusing search range. The working distance between the lens and the imaging target is measured through the distance detection module, the focusing search range is preliminarily locked, invalid focusing outside the focusing search range is avoided, and the focusing efficiency is improved; and the working distance is also used for setting a proper image step length in combination with the current focusing definition, so that the focusing process can cover the peak position of the image definition, the focusing success rate under the conditions of relatively shallow depth of field, relatively high image contrast curve kurtosis and the like is improved, and the situation that the automatic focusing efficiency is limited due to too small step length is avoided.

The application discloses a wafer detection-based focusing method, device, equipment and product, relates to the technical field of semiconductor wafer detection, and the method comprises the following steps: when it is detected that a to-be-detected wafer reaches an imaging position, emitting a point laser to the to-be-detected wafer through a test light path built in advance to obtain an imaging light beam; collecting a light spot image corresponding to the imaging light beam through a double-imaging camera, and calculating a light spot area through the light spot image; calculating an out-of-focus amount of the to-be-detected wafer according to the light spot area, moving the to-be-detected wafer for focusing according to the out-of-focus amount, and obtaining a focusing result. Therefore, the problem that the existing focusing mode needs to be repeatedly scanned, thereby being low in efficiency and failing to meet the requirement of accurate and rapid focusing of wafer microlenses is solved, and the efficiency of wafer detection-based focusing is improved.

The present invention discloses a time difference culture device, which relates to the technical field of biological tissue culture; the time difference culture box is adapted to be equipped with a light source assembly, an observation assembly and a gas supply system; the light source assembly includes a first light focusing part, a light decaying sheet is arranged on the light incident side of the first light focusing part, and the light decaying sheet is provided with a plurality of light transmitting parts in sequence along the length direction of the light decaying sheet, and the light transmittance of the plurality of light transmitting parts increases in sequence along the length direction of the light decaying sheet; the observation assembly includes a microscope camera and a linear drive mechanism; the gas supply system includes a first pressure switch, a first reversing pressure relief valve and a first gas storage tank, the first pressure switch is used to monitor the air pressure in the time difference culture box and control the action of the first reversing pressure relief valve, and the outlet of the first gas storage tank is connected to the inlet of the first reversing pressure relief valve after passing through a pressure reducing valve. The present invention can ensure the clarity of the captured image, and the image has a three-dimensional sense and a sense of hierarchy, so as to accurately judge the morphology of biological tissues and ensure the accuracy of biological tissue evaluation, analysis and screening.

The invention provides an infrared lens automatic focusing method and device based on definition. The method comprises the following steps: controlling a focusing motor to move towards a first direction based on focusing motor parameters, acquiring an image definition value of each position point in the moving process, and if the definition values of 3-5 frames of images are continuously reduced, stopping the focusing motor from moving towards the first direction; controlling the focusing motor to move towards a second direction based on the focusing motor parameters, acquiring the image definition value of each position point in the moving process, if the definition values of 3-5 frames of images are continuously reduced, marking the position point corresponding to the first frame of image in the definition value reduction of the 3-5 frames of images, and if the definition values of the 3-5 frames of images are continuously reduced, marking the position point corresponding to the second frame of image; stopping the focusing motor from moving in the direction opposite to the first direction; and controlling the focusing motor to move towards the marked position point based on the focusing motor parameter, and moving a preset compensation distance at the marked position point so as to complete automatic focusing of the infrared lens. According to the scheme, the clear point position focused on the image picture can be quickly and accurately positioned.

The utility model discloses an automatic focusing laser processing device. The automatic focusing laser processing device comprises a laser generator, a field lens, a first detector and a driving module, wherein the laser generator and the field lens are arranged at an interval, the field lens is installed on the driving module, the laser generator is used for emitting laser, and the field lens is used for focusing the laser on the surface of a workpiece; the first detector is electrically connected with the driving module, the first detector is used for detecting the distance between the field lens and the surface of the workpiece in real time, and the driving module drives the field lens to move along a laser path according to the distance, detected by the first detector, between the field lens and the surface of the workpiece. And the laser is focused on the surface of the workpiece in a self-adaptive manner. Through the arrangement, the problems that the focusing efficiency is low and dynamic focusing cannot be realized due to the fact that the laser focus is manually adjusted at present are effectively solved.

The application discloses an automatic focusing control method, system and medium, the method comprises the following steps: using the maximum spot displacement allowed by the sensor, the total displacement of the spot on the sensor caused by the moving speed of the objective lens along the z-axis and the moving speed of the object to be measured along the x-axis is constrained to screen out the upper limit moving speed allowed by the objective lens; the moving speed of the current objective lens along the z-axis and the defocus amount are obtained, the relationship between the absolute value of the defocus amount and the set defocus amount threshold is judged, if it is not greater than the set defocus amount threshold, the objective lens is driven to move at the second moving speed, if it is greater than the set defocus amount threshold, the objective lens is driven to move at the first moving speed. Through the relationship between the absolute value of the defocus amount of the position of the objective lens and the set defocus amount threshold, the dynamic control of the moving speed of the objective lens, the calculation amount of the focusing speed and the defocus amount is effectively balanced, the accuracy of the defocus amount calculation is improved while realizing the fast focusing.

The invention belongs to the field of optical devices, and particularly relates to a large-view-field super-structure lens based on a multilayer structure, which is characterized in that Ge with high refractive index and ZnSe with low refractive index are alternately stacked to form a super-structure unit with an eight-layer structure, so that excitation of a high-order mode is destroyed, and the super-structure lens only supports a single electric dipole mode; the resonant frequency is broadened by controlling the coupling effect between layers, so that more consistent phase response can be generated under different incident angles; the total height of the superstructure unit of the eight-layer structure is 7 microns, the angle insensitive characteristic of the superstructure unit can be improved, meanwhile, the aspect ratio of the superstructure unit can be reduced, and the superstructure unit evenly and reasonably corresponds to the 2pi phase range within the simulation radius; compared with a super-structure lens composed of a super-structure unit of a single-layer structure, the focusing efficiency of the super-structure lens composed of the super-structure units of an eight-layer structure is improved by about 30% during 50-degree incidence, and the super-structure lens has important significance in optimizing the optical performance of the large-view-field super-structure lens.

The application discloses an automatic focusing method, system and medium, the automatic focusing method comprises the following steps: identifying the magnification of an objective lens, screening the defocus threshold corresponding to the magnification; constructing the theoretical motion model, the measured motion model and the measured variance of the focusing process parameters in the focusing process, and predicting the focusing process parameters at the next moment; analyzing the deviation between the measured value and the predicted value of the focusing process parameters at the same moment, determining whether the deviation of at least one focusing process parameter is greater than the set deviation threshold, if there is, dynamically adjusting the theoretical motion model; if not, driving the objective lens to focus when the predicted defocus is less than the defocus threshold. The application determines whether to dynamically adjust the theoretical motion model by the deviation of the predicted and measured focusing process parameters, eliminates the error, realizes fast focusing, meets the focusing requirements of objective lenses with different magnifications, and improves the focusing efficiency.

This invention relates to the field of image processing technology and discloses a focusing method for an endoscope system and an endoscope system. The method includes: step S1, acquiring the current image captured by the endoscope at the current focal length; step S2, determining the candidate focusing region on the current image; step S3, determining the sharpness evaluation value of the candidate focusing region; step S4, determining whether the sharpness evaluation value meets the preset sharpness condition; if not, changing the focal length of the endoscope and returning to step S1; if yes, determining that the endoscope system has completed focusing. This invention effectively addresses the problem of incorrect focusing, not only achieving more precise focusing and ensuring the acquisition of high-quality images, but also improving focusing efficiency, reducing the risk of blurring, and effectively enhancing the safety and effectiveness of medical operations.

This application provides a focusing method and a projection device, comprising: projecting a first illumination beam and a second illumination beam onto a lens, the first illumination beam and the second illumination beam emanating from the same position of a spatial light modulator and having different incident angles; the first illumination beam passing through the lens and being projected onto a projection surface to form a first light spot, and the second illumination beam passing through the lens and being projected onto the projection surface to form a second light spot; calculating a focusing amount of the lens based on the relative positional relationship between the first light spot and the second light spot on the projection surface; and focusing the lens based on the focusing amount. Through the above method, this application can improve the focusing efficiency of the projection device.

The present invention provides a rear-mounted focusing objective lens, which is arranged between a front lens and a camera, with an optical axis as a rotation center, and includes a first lens, a cemented sheet, a liquid lens, an aperture, a second lens, a third lens, and a fourth lens in order from the object side to the image side. The present invention adopts an image-side telecentric optical design, and realizes automatic focusing by adjusting the surface curvature of the liquid lens. No mechanical displacement occurs during the entire focusing process, and rapid focusing can be completed once within 10ms. The focusing efficiency is high, the cost is low, and the camera and lens with a standard defined interface can be used, which greatly expands the scope of application.

The present disclosure relates to a kind of airborne optical imaging intelligent focusing system and method based on deep learning, it is related to automatic focusing technical field, system includes: the image acquisition module of continuous acquisition image under different focal length of optical system;The pre-processing module for pre-processing to image sequence;Deep learning module, for using definition time trend perception automatic focusing network model to the image sequence after pre-processing analysis processing output focusing direction, focusing step and focusing confidence;The definition time trend perception automatic focusing network model is used to extract the definition feature of each frame image in the image sequence after pre-processing, according to definition feature capture image context dependence in focusing process, extract the time trend information of definition with focal length change, output focusing direction, focusing step and focusing confidence;Focusing control module;Focusing execution mechanism.The focusing efficiency of the present disclosure is high, and reliability is high.

The invention discloses a wireless passive sensor AF camera module and terminal equipment, belongs to the technical field of camera modules, and solves the technical problem that the focusing precision of the camera module of the terminal equipment is low. The camera module comprises a shell, a lens assembly, a carrier and a driving mechanism, the lens assembly is arranged on the shell, the carrier and the driving mechanism are arranged in the shell, the driving mechanism drives the carrier to reciprocate in the optical axis direction of the lens assembly, the carrier comprises a driving plate, and the driving plate is arranged at the bottom of the carrier. The driving assembly is provided with an electronic component, a lens Bluetooth module and a receiving coil, the electronic component is electrically connected with the lens Bluetooth module, the receiving coil is used for generating current, and the electronic component, the lens Bluetooth module and the driving assembly are all electrically connected with the receiving coil. The carrier of the camera module is less limited and high in moving precision, so that the focusing efficiency and the focusing precision of the camera module can be improved, and the arrangement freedom degree of the camera module in the terminal equipment is high.

The application relates to an automatic focusing method, device and computer equipment. The method is applied to a microscope and comprises the following steps: in response to an automatic focusing instruction, controlling the movement of an objective lens according to a first step value corresponding to the imaging parameter of the microscope, and collecting at least two first reference images at different objective lens positions; determining a first objective lens position according to the objective lens position and the blur degree feature corresponding to the first reference image; controlling the movement of the objective lens according to the first objective lens position and a preset second step value, and collecting at least two second reference images at different objective lens positions; and determining a target focal plane position and completing focusing according to the objective lens position and the definition degree feature corresponding to the second reference image. The method can improve the focusing efficiency and reduce the calculation amount under the premise of ensuring the focusing accuracy.

The invention discloses a sighting telescope with a middle focusing device. The sighting telescope comprises a middle frame shell, a detection assembly and the focusing device arranged in the middle of the middle frame shell. The focusing device comprises a focusing piece and a connecting guide rod; one end of the connecting guide rod is movably connected with the focusing piece, and the other end of the connecting guide rod is fixedly connected with the detection assembly. According to the technical scheme, the stability of the sighting telescope is improved; and the distance between the user and the focusing device is shortened, so that the user can complete focusing without effort, and the focusing efficiency and the user experience are improved.

The invention provides a method for controlling the focusing of a camera module, and the method comprises the steps: obtaining a first image of the camera module under different focusing depths, and determining a first mapping relation between the focusing depth and a dispersion value according to the first image; determining a second image of the camera module at different target motor positions, and determining a second mapping relation between the motor position of the camera module and the focusing depth according to the second image; determining a third mapping relation between the motor position and the dispersion value according to the first mapping relation and the second mapping relation; acquiring a target dispersion value of the camera module, determining a target motor position of the camera module according to the target dispersion value and the third mapping relation, and focusing the camera module based on the target motor position; thus, when the target motor position of the camera module is determined, special process processing does not need to be carried out on the image sensor, the process processing time can be shortened, the focusing time is further shortened, and the focusing efficiency and the testing efficiency of the camera module are improved.

The utility model relates to a kind of manual focusing machine, including support, the support is equipped with base, the base is equipped with focusing machine body, the focusing machine body includes detection table, the detection table is equipped with aluminium shell focusing base, the detection table is equipped with stand, the stand is installed with manual focusing equipment, the manual focusing equipment is equipped with knob turntable and focusing energized terminal head, the support is equipped with laser refractor;When operating, aluminium shell is placed in aluminium shell focusing base, is fixed by clamping pin carding;Cap TO is placed in focusing energized terminal head;Personnel operate knob turntable, and the cap TO that is lit is slowly dropped into aluminium shell by rotating;Laser is irradiated on laser refractor from laser emission point simultaneously in the process of pressing, and it is refracted into mirror by laser refractor.The utility model improves the efficiency of laser focusing, to improve the yield of laser product, and the saving of manpower and material cost.

The present invention discloses a 3D galvanometer plane processing control method, system and readable storage medium, wherein the method comprises: after the 3D galvanometer is powered on, switching to automatic mode to read fitting interpolation data, wherein the fitting interpolation data specifically includes surface fitting interpolation coefficients; when reading the fitting interpolation data, loading the surface fitting interpolation data to identify the adjustment data of the three axes of coordinates; acquiring two-way data for position calculation to obtain the target data of the 3D galvanometer, wherein the target data corresponds to the position adjustment data of the Z axis with the XY axis; generating a three-axis control signal for motor movement based on the target data, and marking the 3D galvanometer based on the three-axis control signal. The present invention can quickly realize the dynamic adjustment of the welding focus height of the 3D galvanometer, improve the focusing efficiency and realize high-precision displacement welding.