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Lens assembly, lens, and image pickup apparatus
ActiveCN222365122UGuaranteed focusing accuracyMountingsStructural associationMechanical engineeringOptics
The utility model discloses a lens assembly. The lens assembly comprises a skeleton focusing group, a driving member, a position detector and a controller. The focusing group is movably arranged in the framework along the axial direction of the framework and comprises a focusing frame and a lens arranged on the focusing frame; the driving piece is connected with the focusing frame, and the driving piece is used for driving the focusing frame to move in the axial direction; the position detector comprises a Hall sensor fixed to the focusing frame and a linear magnet fixed to the framework, the length direction of the linear magnet is consistent with the axial direction, and the linear magnet is arranged on the side face adjacent to the Hall sensor. The controller is electrically connected with the Hall sensor and the driving part, and the controller controls the output power of the driving part according to signals of the Hall sensor. According to the technical scheme, a detection-control feedback mechanism is established, so that the focusing frame can accurately stay at the preset focusing position, the focusing precision is ensured, and a clear image is obtained. In addition, the utility model also provides a lens and an image pickup device.
Owner:SHENZHEN LEIYING PHOTOELECTRIC TECH CO LTD
Focus adjustment apparatus and focus adjustment method for binocular camera
ActiveCN121585913BImprove focusing efficiencyGuaranteed focusing accuracyTelevision systemsOphthalmologyEngineering
Owner:AVIEW IMAGE TECH SUZHOU
An auto focus control method, system and medium
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.
Owner:HEFEI I TEK OPTOELECTRONICS CO LTD
Visible light zoom camera
The application relates to a visible light zoom camera, which comprises a bottom plate, a fixed support is arranged at the top of the bottom plate, a lens main body is mounted on the fixed support, a zoom cam is mounted on the outer side of the lens main body, a mirror group five, a mirror group four, a mirror group three, a mirror group two and a mirror group one are sequentially arranged on the inner side of the lens main body, a zoom cam pressing ring is arranged at one end of the zoom cam, a filter assembly is arranged at one end of the zoom cam at the end of the zoom cam pressing ring, and a detection plate assembly is mounted on the outer side of the filter assembly. The application has the beneficial effect that through the assembly and cooperation of various structures, stable work can be realized under extreme environments, the high reliability requirements of special fields such as military and security can be met, the equipment weight is obviously reduced through light weight design and modular structure, the assembly and maintenance process is simplified, and the long-term stability of imaging quality is ensured.
Owner:XIAN ZHONGKE MINGGUANG MEASUREMENT & CONTROL TECH CO LTD
A depth-adjustable steel plate surface hollowing punch
The utility model discloses a kind of hollow punch coders of adjustable depth of steel plate surface, including coding base and clamping mechanism, coding base: its upper end front side is equipped with bottom plate, the upper end of bottom plate is equipped with liftable clamping plate, clamping mechanism: it includes moving block, limit slot, connecting rod, clamping assembly and lifting assembly, the moving block is slidably connected in the left and right sides inside clamping plate respectively, limit slot is all set in the inside of moving block close to the side in the middle of clamping plate, connecting rod is all rotationally connected in the inside middle of clamping plate, this adjustable depth hollow punch coder of steel plate surface, while fixed steel plate can also form limiting effect to steel plate surface, and make steel plate below and clamp bottom wall separate, reduce the influence of laser on clamp, steel plate can also be moved slowly to ensure that the interval between the surface of the coding place of steel plate and laser between in coding process is always equal, reduce the vibration of laser, improve the coding accuracy of laser.
Owner:HENAN HUANYUCHANG ELECTRONIC TECH CO LTD
A laser hole cutting device for toughening glass
ActiveCN224390240USubsequent processing impactInhibited DiffusionLaser beam welding apparatusLaser cuttingToughened glass
The utility model belongs to toughened glass processing technical field, concretely relates to a kind of laser hole cutting equipment for toughened glass, the laser hole cutting equipment for toughened glass, including bottom plate, the upper surface of bottom plate is fixedly connected with first U-shaped plate, the front and back sides of first U-shaped plate inner wall are all fixedly connected with cross pipe, the bottom of cross pipe is fixedly connected with distributing pipe, the bottom end of distributing pipe is fixedly connected with spray head. The laser hole cutting equipment for toughened glass is cooperated by first U-shaped plate, cross pipe, distributing pipe, spray head, first partition, water storage box, submersible pump and connecting pipe, after the glass on belt conveyor passes below spray head, the water sprayed by spray head, glass surface can be covered with a layer of water film, at this time, the diffusion of glass dust generated during cutting can be inhibited by water film, to prevent dust from adhering to laser head or focusing mirror of laser cutting device, ensure laser transmission efficiency and focusing accuracy, improve hole cutting quality.
Owner:NINGBO ECONOMIC TECH DEV ZONE RENTONG TEMPERED GLASS CO LTD
Solar photo-thermal heliostat tracking support
ActiveCN222317321UGuaranteed focusing accuracyAvoid CatonSolar heating energyControl using feedbackHeliostatElectric machine
The utility model provides a solar photo-thermal heliostat tracking support which comprises a base, a support body and a mirror surface structure, the base comprises an annular guide rail, walking idler wheels and a walking motor, the bottom of the support body is connected to the annular guide rail through the walking idler wheels, and the walking motor controls the support body to slide along the annular guide rail through the walking idler wheels; the support comprises a rotating base, a support stand column, a tilting mechanism and a support cross beam, the bottom of the rotating base is connected with the walking rollers, the support stand column is fixed to the rotating base, and the support cross beam is connected with the support stand column through the tilting mechanism; the mirror surface structure comprises longitudinal supports and a micro-curved-surface lens, the longitudinal supports are perpendicular to a support beam and distributed at equal intervals to form a mirror surface supporting frame, and the micro-curved-surface lens is laid on the surface of the mirror surface supporting frame. The device is high in positioning precision, high in transmission flexibility, accurate in focusing and tracking, capable of preventing sand and dust, and low in fault rate.
Owner:JIANGSU MINGYUAN TOWER CO LTD
Projector focusing method, device, equipment and storage medium
ActiveCN118972533BImprove operational efficiencyAccurately obtainedImage enhancementImage analysisFeature vectorImaging processing
The present application relates to the field of image processing technology, and discloses a focusing method, device, equipment and storage medium for a projector, the method comprising: performing image acquisition and preprocessing on a projection screen to obtain a preprocessed image; applying a lightweight one-stage image clarity detection network and an edge detection algorithm to obtain a binary clarity map; extracting image features to obtain a multi-scale fusion feature vector; performing domain adaptation to obtain a projection scene feature representation; calculating a spatial frequency-clarity two-dimensional spectrum based on the projection scene feature representation, and calculating an optimal focal length value using information entropy theory; creating an adaptive PID controller and a golden section search algorithm based on the optimal focal length value, performing closed-loop iterative optimization on the focal length of the projector, and obtaining an accurate focal length value, thereby being able to quickly and accurately evaluate the picture clarity, adapt to different projection environments, and achieve precise closed-loop control, thereby greatly improving the projection quality and ease of use.
Owner:SHENZHEN ZHENHUO TECH CO LTD
Autofocus method, apparatus and computer device
ActiveCN121364556BGuaranteed focusing accuracyReduce image acquisition volumeMicroscopesMountingsOphthalmologyReference image
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.
Owner:NINGBO SUNNY INSTR
Lens assembly, lens, and image pickup apparatus
ActiveCN222365121UGuaranteed focusing accuracyMountingsStructural associationTesting MethodsMechanical engineering
The utility model discloses a lens assembly. The lens assembly comprises a skeleton, a focusing group, a driving member, a position detector and a controller. Wherein the focusing group is movably arranged in the skeleton along the axial direction of the skeleton, and the focusing group comprises a focusing frame and a lens arranged on the focusing frame; the driving piece is connected with the focusing frame, and the driving piece is used for driving the focusing frame to move in the axial direction; the position detector comprises a linear magnet fixed to the focusing frame and a Hall sensor fixed to the framework, the length direction of the linear magnet is consistent with the axial direction, and the Hall sensor is arranged on the side face adjacent to the linear magnet; the controller is electrically connected with the Hall sensor and the driving part, and the controller controls the output power of the driving part according to signals of the Hall sensor. According to the technical scheme of the utility model, a detection-control feedback mechanism is established, so that the focusing frame can accurately stay at the preset focusing position, and the definition of the image is ensured. In addition, the invention also provides a lens and an image pickup device.
Owner:SHENZHEN LEIYING PHOTOELECTRIC TECH CO LTD