170results about How to "Achieving autofocus" patented technology

A lens displacement mechanism using shaped memory alloy (SMA) applied to an auto-focusing lens module is disclosed. The lens displacement mechanism comprising at least one SMA wire. Two opposite ends of the SMA wire are fixed and a longitudinal mid-point of an intermediate movable portion between the two opposite ends is tightened and is fixed on a corresponding hook disposed on an outer edge of the lens so that the intermediate movable portion is tightened between the two opposite ends. When the SMA wire is heated, the intermediate movable portion contracts to pull the hook of the lens for driving the lens to move and slide along with an optical axis so as to achieve auto-focus control. The present lens displacement mechanism is simple in structure and reflow process. Therefore, the present displacement mechanism is suitable to be used in portable camera or mobile phone or PDA, which needs to be small and have easily mass production by SMT.

The invention relates to automatic field depth blending strengthening display method and system based on eye movement tracking. The method comprises step (1) of obtaining eye movement tracking and background image data by adjusting an eye movement camera; step (2) of displaying automatic field depth blending, specific steps thereof are as follows: generating a primary training database; converting probability distribution information; inquiring the database; converting field depth and focus data; estimating pose; blending virtual and actual scenes; and romancing images. The system comprises an eye movement wireless CCD camera arranged on a helmet, a background wireless CCD camera and a microprocessor which is provided with a wireless receiver. The CCD camera adopted by the invention takes eye movement images and background images, and can carry out comparison matching tracking between the eye movement data taken in real time and synchronously taken background image data according to the training information of the field depth and the eye movement to adjust focus degree of image displayed by a transparent helmet display, thus realizing automatic focusing and strengthening display.

This invention provides a photographing module at least including: an electric drive assembly comprising a movable member, a holder, a magnetic circuit system and an elastic member, wherein the magnetic circuit system comprises at least three magnets and at least three coils so as to drive the movable member to perform a linear movement with respect to the optical axis and an angle of inclination with respect to at least an axis, and a magnetic pole direction of each magnet is perpendicular to the optical axis, an axis with respect to the coil winding axis of each coil is perpendicular to the optical axis; a photo sensor positioned on an image side of the photographing module and connected to the holder of the electric drive assembly; and a vibration sensor at a proper position of the photographing module capable of detecting directions and magnitude of a vibration.

The invention provides a preparation method of a thin film transistor of a flexible electronic device. The method comprises the following steps of: (1) preparing a bendable and stretchable substrate; (2) stretching the substrate, and coating an adhesive on a surface of a stretched rubber substrate; (3) depositing a gate on the substrate; (4) depositing an organic dielectric layer unit on the device which is processed in the step (3); (5) respectively depositing a source unit layer and a drain unit layer on the organic dielectric layer unit; (6) loosening the substrate, releasing loads which are acted on the substrate, and carrying out heat treatment to eliminate an interface stress and a pressure stress of the device; and (7) depositing the organic dielectric layer unit. The invention provides the method for mechanically stretching the substrate, so the channel width of the device is reduced, manufacturing accuracy is improved effectively, and the resolution ratio of the flexible electronic device is improved.

The invention discloses an automatic focusing method and device. The method comprises the steps that after a user clicks a target object in a viewfinder to complete manual focusing, first spatial data of the target object are obtained; when it is detected that the viewfinding content in the viewfinder changes, position changing data are obtained; according to the first spatial data and the position changing data, second spatial data of the target object are calculated; the target object is automatically focused according to the second spatial data. By the application of the automatic focusing method and device, in the user photographing process, if the viewfinder moves and the target object does not move out of the viewfinder, the target object can be automatically focused, so that the manual focusing operation during viewfinding content changing is avoided, the focusing operation process is simplified, the focusing speed is increased, and the user photographing experience is improved correspondingly.

The invention provides a motor assembly for driving a liquid lens, a camera module and electronic equipment. The motor assembly includes: a stator portion; a mover portion movable in an optical axis direction with respect to the stator portion; a connecting elastic sheet which is connected with the liquid lens and the mover portion, wherein the mover portion drives the connecting elastic sheet toextrude or pull the liquid lens when being subjected to acting force in the optical axis direction; and a limiting part which moves along with the mover portion, has the same displacement as the moverportion, and is used for limiting the height change range of the connecting elastic sheet in the optical axis direction. According to the technical scheme, the motor used for driving the liquid lenscan meet the performance requirements of automatic focusing and/or optical anti-shake and the like, and the reliability of the motor under abnormal working conditions such as impact and falling is improved.

The invention relates to laser machining equipment which comprises a frame, an operating platform, a pair of guide rail beams, a beam and a laser cutting head. The operating platform is arranged on the frame; the pair of the guide rail beams are respectively arranged on left and right sides of the operating platform; two ends of the beam are respectively installed on the pair of the guide rail beams and can move forward and rearward along the pair of the guide rail beams; the laser cutting head is installed on the beam and can move leftward and rightward along the beam; the laser cutting head is provided with a linear motor, so as to drive a focusing tube to move longitudinally along the vertical direction; and a focal length sensor is also provided, so as to realize the automatic switching of automatic focusing, dynamic defocusing carving and sharp focus cutting during machining. The laser machining equipment can realize automatic focusing and defocusing, is suitable for performing rapid machining on light guide plates, and is convenient to operate.

The invention discloses a camera module and a mobile terminal with the same. The camera module comprises a first light path conversion assembly, a lens, a second light path conversion assembly, an image sensing element and at least one circuit board, the first light path conversion assembly comprises a first prism and a first driving part, and the first driving part is connected with the first prism to drive the first prism to rotate; the lens comprises a plurality of lenses and is arranged towards the emergent surface of the first prism; the second light path conversion assembly comprises atleast one prism, a second driving piece and a third driving piece; the prism to which the initial incident plane belongs is connected with the second driving piece so as to be driven to rotate; and the image sensing element is arranged opposite to the final emergent surface of the at least one prism, and the at least one prism is connected with the third driving piece in the opposite direction soas to be driven to move. Therefore, under the condition that the position of the lens is kept fixed, automatic focusing and optical anti-shake are realized, and power consumption of the motor can be saved by driving the relatively light prism.

The invention relates to an actuator. The actuator includes a base, a fixing frame fixedly arranged on the base, an actuating device, a movable frame and two guiding rods. The base includes a flat plate with a light inlet hole and ring-shaped protrusions extending from the flat plate and surrounding the light inlet hole. The actuating device includes a piezoelectric motor fixedly arranged on the base and ring-shaped driving parts. The driving parts are rotatingly sleeved outside the ring-shaped protrusions and in contact with the piezoelectric motor. The upper end face of the driving parts is provided with a partly ring-shaped wedge groove. The movable frame includes a movable body and a wedge-shaped strip protruding from one end of the movable body and corresponding to the wedge groove. The movable frame is borne on the upper end surface of the base and the wedge-shaped strip is partly or totally clamped in the wedge groove. The two guiding rod penetrate through the movable body and one end of each of the guiding rod is fixed on the base. The invention further relates to a camera module comprising the actuator.

The invention discloses an adjustable light filter type hyperspectral imager and method based on compressed sensing. An imaging device is provided with an electric translation platform. A calculationcontrol module adjusts an object distance and an image distance of the imaging device to realize automatic focusing, which solves a problem that a space compression ratio of a traditional compressed sensing hyperspectral imaging system is fixed and can not be adjusted. A beam splitter is used to divide a scene spectrum into two parts which are collected by two LCTFs with different spectrum segments via two different optical paths, and the problem that the LCTF has a single imaging spectrum segment range in a hyperspectral compressed sensing imaging field is solved. According to an input compression ratio, basic parameters of the optical paths are automatically calculated, and the optical paths are automatically adjusted under the coordination of an electric displacement platform. A compressed sensing theory is combined with the LCTF so as to solve the problem that a spatial resolution is limited by the detector in traditional LCTF hyperspectral imaging.

The present invention relates to a drive device, in particular to a motor for driving a liquid lens and a lens group. The motor comprises a seat body, a carrier, a first resetting member, a sensor anda driving assembly; the carrier is movably disposed in the seat body in a direction towards or away from the liquid lens; the driving assembly comprises a rotor disposed on the carrier and a stator disposed on the base body, and the stator drives the rotor to move up and down along an optical axis and/or to deflect around the optical axis; the first resetting member is disposed on the liquid lensand acts on the carrier when the carrier moves to provide a reset force for restoring an initial position of the carrier; the sensor and the rotor are correspondingly fixedly arranged in the seat body for sensing the displacement of the mover or the change of the magnetic field; the carrier moves to act on the first resetting member, the first resetting member is displaced relative to the liquidlens so as to adjust the curvature of the liquid lens, and when restoring to the initial position, the first resetting member provides the reset force for restoring to the initial position for the carrier. The motor of the present invention has the advantage of precise control of the liquid lens.

The invention discloses an automatic detection device. The device comprises a detection unit, wherein the detection unit comprises an object stage; a the object stage is sleeved with a detection conveying belt; a cover plate for flattening a tested element is set above the object stage; the cover plate is connected with a cover plate lifting mechanism; a camera is set above the cover plate; and the camera is connected with a camera lifting mechanism. According to the automatic detection device provided by the invention, the camera is applied to drilling detection of a flexible printed circuitboard, the camera is combined with the camera lifting mechanism and the detection conveying belt, camera automatic focusing and dynamic scanning are realized, and detection efficiency is improved. According to the automatic detection device, the flexible printed circuit board can be flattened through utilization of the liftable cover plate. Compared with a vacuum absorption platform, the automaticdetection device has the advantage that an effect is relatively good. The corner warping problem can be solved. Detection precision is improved.

The invention belongs to the technical field of image detection, The invention discloses an automatic focusing method and a device for image definition curve fitting based on the least square method.The method comprises the following steps: performing three fixed-length sampling, fitting the image definition curve by the least square method according to the sampling points sampled by the third fixed-length sampling, and determining the extreme value of the image definition evaluation value according to the fitting binomial curve; when the extreme value of the image sharpness evaluation valueexceeds the determination threshold of the image sharpness, it is determined to realize auto-focusing; wherein, the sampling step interval of the second sampling is determined according to the sampling value of the first fixed-length sampling; The sampling step interval of the third sampling is determined according to the sampling value of the second fixed-length sampling. In the process of auto-focusing, the number of times of calculating image sharpness is much less than that of climbing and searching algorithm, which shortens the focusing time. Moreover, the method solves the problem that the hill-climbing search algorithm can only obtain the clearest point of the local image, and realizes the global auto-focusing.

The invention relates to a laser cutting head for laser machining equipment, which comprises a mounting block, a linear guide rail, a sliding block, a focusing tube fixing plate, a focusing tube, a focal length sensor, a motor fixing plate, a linear motor, and a microscope base. The linear guide rail is vertically fixed on the mounting block; the sliding block is glidingly installed on the near guide rail; the focusing tube fixing plate is fixed on the sliding block; the focusing tube and the focal length sensor are respectively fixed on two sides of the focusing tube fixing plate; the motor fixing plate and the microscope base are fixed at the upper end of the mounting block and positioned above the linear guide rail; the linear motor comprises a motor body, a screw rod connected with the motor body and positioned on the lower side of the motor body, and a nut sleeved on the screw rod; the motor body is fixed on the motor fixing plate; and the nut is fixed with the sliding block. The laser cutting head can realize automatic focusing and defocusing, and has a simple structure and is low in cost.

The invention discloses a horizontal control and automatic focusing system for a silicon chip platform of a photoetching machine and a method thereof. The system comprises a mask plate, a lens, a silicon chip object stage, a focal plane space image collection detector array and a feedback controller system, moreover, the system also comprises a projection lens and a beam splitting plate which can conduct light splitting on the reflected light beam; the projection lens and the focal plane space image collection detector array collect the image formed by reflection on the surface of the silicon chip and amplify the image. According to the principle of reversibility of optical path, as the invention adopts the confocal detecting method usually used in optics, the invention improves detecting accuracy of the silicon chip horizontal control system and realizes automatic focusing, therefore, the invention improves the accuracy of the silicon chip horizontal control system and enlarges the photoetching technique window, moreover, the invention greatly decreases the requirement of the photoetching technology for the photoetching equipment while the cost of the equipment is reduced and manufacturing technique is improved; the invention can conduct horizontal position control and automatic focusing on the silicon chip in real time, accurately and automatically.

The invention discloses a DLP projector automatic focusing mechanism and an application thereof. The DLP projector automatic focusing mechanism comprises a DLP projector, a driving assembly and a camera connected with a main controller; the DLP projector comprises a projection body and a focusing rotary knob connected with the projection body; the driving assembly is connected with the focusing rotary knob for driving the focusing rotary knob to rotate; and the camera is arranged close to the focusing rotary knob for collecting a projection image of the DLP projector. According to the projector automatic focusing mechanism, the image collected by the camera is analyzed and processed through the main controller, and the image definition is judged; before the image definition satisfies requirement, the main controller automatically controls the driving assembly to drive the focusing rotary knob to rotate so as to realize automatic focusing of the DLP projector; compared with a manual focusing mode in the prior art, automatic focusing can be realized by the automatic focusing mechanism, without needing to reserve a window for allowing a user to check a focused image in the DLP projector; and in addition, harm of ultraviolet light from the DLP projector to human eyes can be avoided.

The invention relates to an intelligent welder for a large ship steel plate. The welder consists of a controller carrier, a slide block, a rotary rod, a displacement sensor, a welding gun head, a fastening screw, a positioning rod, a rubber flat plate, a guide rail, a fixing rod, a counterweight block, a suction disc and a rail wheel, wherein the rail wheel is arranged at the bottom of the controller carrier; the rotary rod and the fixing rod are arranged on both sides of the controller carrier; the rail is paved on the positioned steel plate; the positioning rod is adjusted into a welding seam; the automatic welding gun is inserted into the welding gun head; and the welder is arranged above the controller carrier. The equipment is started, and the positioning rod drives the slide block to move along with the complicated welding seam, thereby driving the welding gun to move and realizing automatic focusing. As the rail is made of rubber and the bottom of the rail is provided with the high-temperature resistant soft magnetic suction disc, the welder can move on a circular arc surface with a certain angle, thereby realizing high-quality welding of complicated working station.

The invention discloses an image shooting method and apparatus, and an unmanned aerial vehicle. The method comprises the following steps: obtaining a feature image from video image data collected by the unmanned aerial vehicle; extracting scene information corresponding to at least one scene from the feature image; performing matching operation on the scene information and pre-stored target object information in a feature database of the unmanned aerial vehicle to obtain a matching result; determining a focusing area and/or an exposure area of the feature image according to the matching result; and based on the determined focusing area and/or an exposure area of the feature image, performing a shooting operation. According to an embodiment of the invention, automatic focusing and/or exposure of the target object satisfying the user demands is achieved, and the user experience is improved.