38results about How to "Realize the auto focus function" patented technology

The invention discloses an image change automatic sensing focusing method for a microscopic camera. The method comprises the following steps: defining a plurality of scene states according to change states of image brightness and an image evaluation function value; monitoring the real-time change conditions of the image brightness and the image evaluation function value of the current scene; determining the scene state of the current scene according to the real-time change condition of the image brightness and the image evaluation function value, and adopting a focusing monitoring strategy corresponding to the scene state according to the scene state, the focusing monitoring strategy comprising: entering a single focusing process after the image brightness and / or the image evaluation function value is recovered to be stable; and executing a single focusing process based on a hill climbing search method, and determining an optimal focusing position. According to the image change automatic sensing focusing method, different focusing strategies can be automatically adopted according to different focusing scenes, so that the focusing accuracy is improved.

The invention discloses an ultra-thin varifocal optical system with low cost, simple process and very low temperature drift, which comprises a photosensitive chip, a first lens group, a second lens group and a third lens group, wherein the distance between the first lens group and the second lens group gradually increases during the change from short focus to long focus; the distance between the second lens group and the third lens group gradually decreases during the change from short focus to long focus; one eyeglass of the third lens group adopts a non-spherical lens which can greatly improve the resolving capability level and shorten the thickness of the third lens group, a diaphragm is arranged between the second lens group and the third lens group, and a fourth lens group is arranged behind the third lens group. The invention has the characteristics of low cost, ultra-thin structure, simple process, very low temperature shift, and the like, and can reach 28mm wide angle and below 7 times zoom ratio.

A multifunctional surface evidence image flattener in the field of sampling technology, which automatically rotates and unfolds the object to be tested by rotating the stage, and the image control system sends a completion signal to the computer after unfolding, and the computer controls the CCD digital imaging system and lighting respectively. Combined light source opening and closing, control the lifting mechanism to adjust the height of the CCD digital imaging system and lighting combined light source, control the horizontal movement mechanism to adjust the horizontal position of the rotating stage, and control the rotating motor to adjust the movement of the self-adjusting arm for fixing Object, adjust the rotation speed of the rotating stage, so that the object to be measured completes the rotation of several angles on the rotating stage, and the CCD digital imaging system obtains image information at various angles on the surface of the object to be measured, and the image information is transmitted to the image control system , carry out data processing and integrate the pictures. The invention realizes the acquisition of plane image information from the curved surface through the automatic rotation scanning of the rotating stage and corresponding image processing software.

The invention belongs to the technical field of camera brakes, and specifically relates to a split-type low-power small autofocus brake, which includes a housing, a spring, an image sensor carrier, at least one magnet, at least one independent coil, and an elastic circuit board, a spring, and an image sensor carrier . The elastic circuit board forms a spring vibrator system with one axis displacement degree of freedom. At least one magnet is arranged on the inner wall of the housing, and the independent coil is arranged on the image sensor carrier and correspondingly arranged with the magnet. Ampere's force acts on the magnetic field. The braking structure of the present invention does not generate nonlinear friction force, and has the characteristics of good dustproof and heat dissipation effects.

The invention discloses an image change automatic sensing focusing method for a microscopic camera, comprising the following steps: defining various scene states according to the change state of image brightness and image evaluation function value; monitoring the image brightness and image evaluation function of the current scene The real-time changes of the value, according to the real-time changes of the image brightness and the image evaluation function value, determine the scene state of the current scene, and adopt the focus monitoring strategy corresponding to the scene state according to the scene state, and the focus monitoring strategy includes: waiting for the image The brightness and / or image evaluation function value returns to stability, and enters a single focusing process; performs a single focusing process based on the hill-climbing search method to determine the best focusing position. The image change automatic sensing focusing method can automatically adopt different focusing strategies according to different focusing scenes, so as to improve focusing accuracy.

The invention belongs to the technical field of projection, and discloses a projection device as well as a projection and camera shooting method thereof. The projection device comprises a first light modulation part, a projection panel, a second light modulation part and an imaging part, wherein reflected light of a projective plane reaches the imaging part through the second light modulation part or through the second light modulation part and the first light modulation part; and the imaging part is arranged on the projection panel or arranged independent of the projection panel. The projection and camera shooting method comprises steps as follows: a projection light source reaches the projection panel through the first light modulation part; the projection panel projects the projection light to the projection plane through the second light modulation part; the light of the projective plane reaches the imaging part through the second light modulation part or through the second light modulation part and the first light modulation part; and imaging data of the imaging part for the projection plane is read. The projection device as well as the projection and camera shooting method thereof has the advantages of good projection effect, small power consumption, small equipment size and low cost.

The embodiments of the invention relate to automatic focusing methods and apparatus suitable for use in digital imaging devices. The proposed methods and apparatus evaluate the focus condition of the optical system by evaluating the digitized image, without requiring additional hardware besides the digital image-capture signal flow path. A method for computing the appropriate direction and magnitude of optical system adjustment, based on the evaluated focus condition, is provided. The computed quantities are communicated to the lens driving apparatus to reposition and adjust the optical system and to incrementally obtain a better focus. Upon reaching a desired focus quality, the device is prevented from controlling the lens driving apparatus.

The invention discloses rice mildew degree detection equipment based on microscopic computer vision and a detection method thereof, relates to the technical field of experimental rice detection devices and detection methods thereof, and aims to solve the problems that a culture dish needs to be manually adjusted when rice is shot by the conventional rice mildew degree detection equipment in the market, the adjustment deviation is large, and the detection efficiency is high. Meanwhile, when the rice is added, the rice needs to be placed manually, and the problem that the detection accuracy is affected due to mutual stacking of the rice is prevented. A first sample holder lead screw is fixedly arranged above the base, a second sample holder lead screw is in transmission connection with the upper portion of the first sample holder lead screw, a sample holder is slidably arranged above the second sample holder lead screw, a light source is arranged above the sample holder, a long-focus microscope lens is arranged above the light source, and a light source is arranged above the long-focus microscope lens. A main supporting frame is fixedly arranged on one side of the sample frame first lead screw, a camera adjusting lead screw is fixedly installed on one side of the upper end of the main supporting frame, and a rice box is arranged on one side of the light source.

The present invention relates to an apparatus and a method for controlling a multi-axis position slope of a camera lens, characterized in that the camera lens is controlled to move within a common stroke interval among stroke intervals in which the camera lens can move in an axial direction (z-axis) parallel to an optical axis direction in each of three or more axis positions, and moving the camera lens to a target position using a compensation coefficient that is compensated so that the lens movement distance of each control code is the same.

The invention relates to an automatic focusing device and a camera module, and the automatic focusing device comprises: a reflector, which is disposed at the rear side of a lens assembly and is configured to change the path of light passing through the lens assembly so as to enable the light to be oriented towards an image sensor; a bracket, to which the reflector is mounted, the bracket configured to linearly move in an optical axis direction; a housing configured to accommodate the carriage; and a driving unit configured to move the carriage such that a distance between the reflector and the lens assembly simultaneously changes with a distance between the reflector and the image sensor.

The present invention provides a voice coil motor, which includes an auto-focus mechanism and a fuselage anti-shake mechanism. The auto-focus mechanism includes a first base, a cover, a coil assembly arranged between the first base and the cover, and a The cover and the magnetic assembly located around the coil assembly; the fuselage anti-shake mechanism includes a second base located on the side of the first base away from the cover and a coil module positioned on the second base. After the coil assembly is powered on, it is connected to the magnetic assembly The electromagnetic force is generated between the coil module to drive the coil assembly with the lens to move axially, which can realize the auto-focus function; after the coil module is powered on, the electromagnetic force is generated between the magnetic assembly to drive the second base and drive the sensor with the photosensitive chip The coil module moves relative to the first base to realize the OIS anti-shake function. The invention also provides a camera and electronic equipment provided with the voice coil motor.

The invention provides an automatic focusing device for a telephoto lens, which relates to the field of security equipment and includes a processor, a video source docking interface, a control signal conversion chip, a lens control wiring interface, and a video output respectively connected to the processor. an interface and a power input interface; the control signal conversion chip is also connected with the lens control wiring interface; it also includes a pan-tilt control line interface connected with the control signal conversion chip. The telephoto lens auto-focusing device of the present invention has the function of realizing the auto-focusing of the telephoto lens, and supports the 3D control function of the pan / tilt and the lens. It can be used in video imaging, automatic focusing of telephoto lens; and 3D coordinate positioning function when video event detection is linked to alarm, so as to accurately enlarge the image required for video alarm.