12results about How to "High focusing precision" patented technology

The invention provides a struck sighting telescope and a distance measuring sighting method. The struck sighting telescope comprises a shell, an adjusting gear and an objective lens module. The objective lens module is installed in the shell, the adjusting gear is connected with the shell, and the adjusting gear is installed in the middle of the shell; the objective lens module comprises a gear cylinder and a connecting piece, the adjusting gear and the connecting piece are installed at the two ends of the gear cylinder respectively, the connecting piece is sleeved with the gear cylinder, the adjusting gear is connected with the circumferential side end of the gear cylinder in a meshed mode, the inner wall of the gear cylinder is connected with the outer wall of the connecting piece, and the adjusting gear is connected with the outer wall of the connecting piece. The inner wall of the other end of the gear cylinder and the outer wall of the connecting piece are provided with first thread structures matched with each other. The adjusting gear is installed in the middle of the shell, when an operator adjusts the adjusting gear, adjustment at the front end of the objective lens can be avoided, the action of shaking the objective lens is reduced, vibration is avoided, and the aiming precision is determined.

This application belongs to the field of ultrasonic testing equipment, specifically disclosing an automatic focusing mechanism for ultrasonic testing that follows the curvature of a curved surface. The mechanism includes a linear module, a frameless motor, and an automatic focusing module. The automatic focusing module is connected to the lead screw structure of the linear module, and the frameless motor is also connected to the linear module. The automatic focusing module drives the lead screw structure of the linear module to reciprocate along the Z-axis to move closer to or further away from the sample to be tested. The automatic focusing module includes a voice coil motor and an ultrasonic probe. The voice coil motor is fixedly connected to the lead screw structure, and the ultrasonic probe is fixedly connected to the voice coil motor. The voice coil motor drives the ultrasonic probe to reciprocate along the Z-axis according to the curvature of the sample to be tested. This application enables the dynamic maintenance of a constant focal length for the ultrasonic probe, ensuring that both the center and edge areas of the product under test can be detected completely and clearly, thereby obtaining a clear acoustic image and achieving consistent imaging across the entire field of view.

The invention discloses a projection lens, a focusing method, a focusing device, a storage medium, a computer program product and projection equipment, and relates to the technical field of projection display, the projection lens comprises a first lens group, a diaphragm and a second lens group which are sequentially arranged along the horizontal direction; the light source is arranged on one side of the second lens group, and light emitted by the light source sequentially passes through the second lens group, the diaphragm and the first lens group to form a light path; the electro-optical modulation crystal is arranged in the light path. The invention aims to improve the focusing response speed and the focusing precision and reduce the cost.

The utility model relates to the technical field of focusing, in particular to a focusing device for improving focusing precision based on a long lens cone, which comprises a substrate; the fixed lens cone is arranged on the substrate; the fixed lens cone is provided with an axial chute, and one end of the fixed lens cone is provided with a laser light source. The lengthened inner lens cone is movably arranged in the fixed lens cone at a preset gap; a focusing lens is arranged at one end, close to the laser light source, of the lengthened inner lens cone; the driving mechanism is arranged on the base plate; the driving mechanism is connected with the lengthened inner lens cone through the adjusting mechanism and the axial sliding groove and drives the lengthened inner lens cone to move along the axial sliding groove. And the axial deviation angle between the lengthened inner lens cone and the fixed lens cone is reduced along with the increase of the length of the lengthened inner lens cone, so that the focusing precision is improved. The focusing device has the advantages that by lengthening the inner lens cone and simplifying the structures of the lengthened inner lens cone and the fixed lens cone, the stability of the focusing device is remarkably improved, and the problem of light spot shaking is solved.

A high-precision and high-stability focusing mechanism disclosed by the present invention comprises a focusing transmission assembly, a focusing support assembly, a focusing carriage assembly and four slide rails, the focusing transmission assembly is mounted on the upper wall of the focusing support assembly, the focusing carriage assembly is arranged on the inner side of the focusing support assembly, and the four slide rails are mounted on the upper wall of the focusing support assembly. The four sliding rails are all arranged between the focusing sliding frame assembly and the focusing supporting assembly, the fixed ends of the four sliding rails are all installed on the side wall of the focusing supporting assembly, the sliding ends of the four sliding rails are all installed on the side wall of the focusing sliding frame assembly, and the focusing sliding frame assembly can slide on the inner side of the focusing supporting assembly through the sliding rails. According to the device, the focusing transmission assembly drives the focusing carriage assembly to move, the focusing carriage assembly drives the focal plane of an external camera to move, so that the purpose of focusing the camera is achieved, and meanwhile, the device adopts the design of four sliding rails, so that the adjusting carriage assembly is more stable in sliding.

The present disclosure discloses a fundus observation system and a surgical microscope. The system is connected to a microscope body, and includes a focusing body, the focusing body having a housing, a first slider, a second slider, a focusing assembly, and a plurality of connecting rod units, the focusing assembly including a focusing frame and a focusing lens arranged on the focusing frame, the connecting rod unit including a first connecting rod and a second connecting rod that are cross-hinged, the two ends of the first connecting rod are respectively hinged to the second slider and the housing, the two ends of the second connecting rod are respectively hinged to the focusing assembly and the first slider, the first slider is slidably arranged on the housing along a sliding direction, and the second slider is slidably arranged on the focusing assembly along a sliding direction, so that the focusing lens can move relative to the housing along the focusing direction, and the focusing direction is perpendicular to the focusing lens.

The utility model relates to a kind of focusing tool, including pedestal, pedestal is plate-like;Supporting plate, supporting plate is set on the board surface of pedestal and extends along the vertical direction of pedestal;At least one adjusting plate, the side wall of adjusting plate is rotatably connected with the side wall of supporting plate by rotating connecting piece, and the axis of rotating connecting piece is perpendicular to the extension direction of adjusting plate;Through hole is opened in the board surface of adjusting plate, and at least one focusing lens barrel, focusing lens barrel is sleeved with through hole.This focusing tool is set along vertical direction extending supporting plate on pedestal, and rotatable adjusting plate is arranged at supporting plate side wall, the controllable adjustment of focusing lens barrel in space angle is realized, so that focusing process has higher flexibility and operability.Adjusting plate uses rotatable connecting structure and is provided with the through hole that can be clamped, and by clamping gap cooperation fastener, stable clamping force can be formed to focusing lens barrel.

The utility model discloses a focusing device and a therapeutic apparatus, and relates to the technical field of focusing devices, the focusing device comprises a first focusing cylinder, the first focusing cylinder is internally provided with a first light path channel; a first lens group and a second lens group are arranged in the first focusing cylinder, the first lens group comprises a plurality of first lenses which are arranged along the optical axis direction and are fixedly connected with the first focusing cylinder, and the second lens group comprises a plurality of second lenses which are arranged along the optical axis direction and are in sliding connection with the first focusing cylinder in the optical axis direction; the first end of the focusing rod extends into the first focusing cylinder and is fixedly connected with the second lens; an operator can adjust the size of a light spot by operating the focusing rod, so that the focusing device has a relatively stable focusing effect, and the focusing cost is reduced; the positioning assembly provides a focusing basis for an operator, and the focusing precision of the focusing equipment is improved; the first focusing cylinder separates the focusing rod from the first light path channel, so that the focusing device has high focusing efficiency and focusing precision.

The utility model belongs to the technical field of focusing lenses, and particularly relates to a double-knob thread focusing mechanism. Comprising a main lens cone and a shell, the main lens cone is fixedly installed on the inner side of the shell, a lens is installed at one end of the main lens cone, a movable lens cone is slidably connected into the other end of the main lens cone, and a lens is installed at the end, away from the main lens cone, of the movable lens cone; according to the utility model, through the gear combination design, multi-direction multi-knob focusing can be realized, and the gear combination has a high transmission ratio, so that the focusing precision is improved; according to the utility model, focusing is realized by moving the lens cone through the focusing mechanism; through the structural design of the mounting circular groove, the knob is convenient to replace.

The utility model relates to a lens, including movable lens and focusing structure, focusing structure includes focusing support, focusing silk mother and focusing screw rod, focusing support fixed connection in movable lens's lens barrel, focusing silk mother sets up on focusing support and its axial parallel movable lens's axial, focusing screw rod is screwed with focusing silk mother and sets up to movable lens's image side extension, the extension tail end of focusing screw rod is connected with the focusing hand wheel for driving its rotation around the own axis. In addition still provide a kind of imaging equipment using above-mentioned lens barrel, imaging chip is located between movable lens and focusing hand wheel. In the utility model, connecting focusing support on movable lens and connecting screw rod mechanism by focusing support, and focusing screw rod sets up to movable lens's image side extension, not only can realize long distance focusing, but also can make the radial dimension of lens smaller;Focusing hand wheel and the lens barrel of lens are relatively separated, more suitable for single-handed operation, and use experience is better.

The invention discloses a novel AF focusing module, which comprises a fixed base, a focusing driving assembly, a movable focusing ring and a movable lens frame, and is characterized in that the movable focusing ring rotatably sleeves the periphery of a cylindrical part of the base; the focusing driving assembly comprises a stepping gear motor, and an output gear at the output end of the stepping gear motor is meshed with the outer gear part of the movable focusing ring; a guide rod on the outer side wall of the movable mirror frame penetrates through a base guide long hole of the base cylinder part and is embedded and inserted into a focusing ring inclined hole of the movable focusing ring; a first magnetic attraction piece is arranged on the inner wall of the light through hole of the base, a second magnetic attraction piece is arranged on the outer side wall of the movable mirror frame, and the first magnetic attraction piece and the second magnetic attraction piece are arranged in a staggered mode in the Z-axis direction and fixed in the corresponding limiting installation grooves in a dispensing mode respectively; and the movable mirror frame is subjected to the combined action of radial and axial holding forces under the magnetic action of the first magnetic attraction piece on the second magnetic attraction piece. The novel AF focusing module has the advantages of being novel in structural design, good in stability and reliability and high in focusing precision.

The invention discloses a magnetic suspension type automatic focusing module, which comprises a fixed base, a stepping gear motor, a movable focusing ring and a movable mirror frame, and is characterized in that the movable focusing ring sleeves the periphery of a cylinder part of the base, and the movable mirror frame is movably embedded in a light through hole of the base; the stepping gear motor comprises a motor base, a reduction gear set and a stepping motor, and an output end gear of the reduction gear set is meshed with the outer gear part of the movable focusing ring; the movable mirror frame is provided with a guide column, the guide column and the movable mirror frame are of an integrated structure through injection molding, and the outer end of the guide column penetrates through the vertical through groove and extends into the spiral groove. The magnetic attraction assembly comprises a first magnetic attraction piece arranged on the inner wall of the light through hole of the base and a second magnetic attraction piece arranged on the outer side wall of the movable mirror frame, the first magnetic attraction piece and the second magnetic attraction piece are arranged in a staggered mode in the Z-axis direction, and the movable mirror frame is subjected to the combined action of radial and axial retention force under the magnetic action of the first magnetic attraction piece and the second magnetic attraction piece. The magnetic suspension type automatic focusing module has the advantages of being novel in structural design, good in stability and reliability and high in focusing precision.