341 results about "Vertical angle" patented technology

The invention belongs to the technical field of tunnel excavation, and particularly relates to a method for projecting a tunnel excavation contour through multi-beam visible laser. Comprises: S1, establishing a tunnel line model; s2, establishing a two-dimensional rectangular coordinate system on the excavation section of the tunnel; s3, arranging more than three target positioning points on the excavation section of the tunnel, and installing reflecting lenses on the target positioning points; s4, converting the space coordinates of the target positioning point obtained in the step S3 under the construction engineering coordinate system into a two-dimensional rectangular coordinate system; s5, converting the two-dimensional rectangular coordinates of each point of the theoretical tunnel contour model into three-dimensional space coordinates; s6, erecting a laser projection device; s7, calculating the horizontal angle and the vertical angle obtained in the step S5 by the laser projection device, and controlling a motor to quickly adjust the angles of the reflecting lenses of the X axis and the Y axis respectively; s8, adjusting the angles of the reflecting lenses of the X axis and the Y axis of the related positioning point; and S9, averaging the mileage of the target positioning point of each total station obtained in the step S4, and taking the averaged mileage as the mileage of the current excavation face to carry out informatization management.

The invention provides a visual water gauge intelligent recognition method and system, and the method comprises the steps: receiving a water gauge image shot by a camera, carrying out the contour recognition of the water gauge image, determining a target object corresponding to a contour according to the pixel value of a contour surrounding region in a contour recognition result, the shape of the contour surrounding region, and the position relation between the contour surrounding regions, and carrying out the recognition of the contour. The method comprises the following steps: acquiring contours of a plurality of target objects and a position relationship between the contours of the target objects, judging whether the water gauge is shielded according to the position relationship between the contours of the target objects, acquiring a shielding condition of the water gauge, and if the shielding condition is no shielding or partial shielding, judging whether the water gauge is shielded. Identifying the coincident contour area and the area where the water gauge is located to obtain the water level height, if the shielding condition is complete shielding, controlling the camera to rotate to a vertical angle, obtaining a vertical image shot by the camera at the vertical angle, and identifying the vertical image to obtain the water level height; and the water level identification of the sheltered image can be realized without marking a large number of sheltered images.

The invention discloses a power transmission line foundation pit three-dimensional laser radar equipment error self-correction control method, and relates to the technical field of power transmission line construction, and the method comprises the following steps: firstly, defining the distance from three-dimensional laser radar equipment to a target point, a horizontal included angle and a vertical included angle based on a Cartesian coordinate system; determining an initial coordinate of the target point; secondly, selecting a reference control point, removing noise and gross error points, correcting offset in the vertical direction, and finely processing point cloud data; thirdly, defining errors in the X-axis direction, the Y-axis direction and the Z-axis direction, and establishing an error correction model; and finally, based on the observation value and an error correction model, carrying out self-correction on the target coordinate, and carrying out correction through an environment feature self-adaptive error weight distribution mechanism. According to the method, closed-loop iterative optimization is performed through a multi-level data verification mechanism, the measurement precision is ensured, the operation efficiency is improved, the environmental adaptability is enhanced, and the method is suitable for power transmission line foundation pit division operation under complex terrains.

The utility model discloses a projector capable of multi-angle adjustment, which relates to the technical field of projectors, and comprises a box body, an internal groove is arranged in the box body, a mounting block is slidably connected in the internal groove, the top of the mounting block is rotatably connected with a rotating disc, the top of the rotating disc is fixedly connected with two corresponding mounting racks, and the mounting racks are fixedly connected with the rotating disc. A third rotating shaft, a worm, a fourth rotating shaft, a worm gear, a third servo motor and the rotating column are matched with one another, a second rotating groove is formed in one of the mounting frames, and a second rotating mechanism is arranged in the second rotating groove. According to use requirements, a third servo motor drives a third rotating shaft and a worm to rotate, then drives a fourth rotating shaft and a worm gear to rotate, and then drives a rotating column to rotate, so that the vertical angle of the projector body is adjusted.

The invention belongs to the technical field of engineering surveying, and particularly discloses a river-crossing leveling method and system.The method comprises the steps that four control points are arranged on the two sides of a water area to be measured, each control point is provided with a centering rod tool, and each centering rod tool is integrated with an upper-layer prism and a lower-layer prism with the preset fixed vertical distance; a first total station and a second total station are erected on the two banks of the water area, upper-layer prisms and lower-layer prisms arranged on centering rod tools on the opposite banks are observed synchronously and oppositely, and vertical angle and slant distance data of all observation targets are obtained; and based on the vertical angle and slope distance data, a preset fixed vertical distance is used as a checking condition, and the height difference between the target positions on the two banks is solved. According to the method, the double-layer prism tool is introduced into a physical forced closing check condition, and traditional quadrilateral geometric closing check is combined, so that the data redundancy and the reliability of results are greatly enhanced, and system errors can be effectively identified and separated.

The invention relates to the technical field of semiconductor processing, and provides a directional cutting method and equipment for a single crystal ingot. The method comprises the steps that an X-ray transmitting tube and an X-ray receiver on an orientation assembly are adjusted according to a reference wafer of a standard crystal orientation, the adjusted orientation assembly is obtained, and according to the adjusted orientation assembly, the horizontal angle and the vertical angle of a to-be-cut crystal ingot are adjusted through a crystal loading platform so that the tangent plane of the to-be-cut crystal ingot can be matched with the cutting plane; the adjusted to-be-cut crystal ingot is cut, a cut wafer is obtained, the crystal orientation of the cut wafer is measured, the angle deviation between the horizontal direction and the vertical direction of the cut wafer is obtained, and the compensation value of the cutting equipment is calculated based on the angle deviation; the compensation value is used for conducting angle compensation on the crystal loading platform deck, a new to-be-cut crystal ingot is cut, a wafer conforming to the target crystal orientation is obtained, and the cutting equipment comprises an orientation assembly and the crystal loading platform deck. The problem that in the prior art, the wafer cutting precision is not high enough is solved.

The invention relates to the technical field of welding, in particular to a spacing adjustment working frame for steel structure profile welding, which comprises a base, a working box, a touch screen, a moving mechanism, a placing table, a limiting mechanism and a plumb aligner, the working box is mounted on the upper end face of the base, the touch screen is arranged on the side end face of the working box, and the moving mechanism is arranged in an inner cavity of the touch screen; a limiting mechanism is arranged on the inner side of each placing table; a plumb aligner is arranged at the edge of the upper end surface of the working box; a through groove is dug in the upper end surface of the working box; a distance detection mechanism is arranged on the opposite surface of each placing table; through the structure, the to-be-welded part is rapidly limited and positioned, the device can adapt to profiles of different types and sizes, the problem of poor adaptability is avoided, the vertical angle of the to-be-welded part is detected through the plumb aligner, and the accuracy of a welding path is improved.

The utility model discloses a lifting device for curtain wall construction, which comprises a carrier, an extension lifting arm and a sucker component, auxiliary devices are mounted in inner cavities at two ends of the carrier, a turntable is mounted at the upper end of the middle of the carrier, a base is mounted at the upper end of the turntable, the extension lifting arm is mounted on the base, and the sucker component is mounted on the extension lifting arm. A connecting frame is installed at the left end of the stretching lifting arm, an equipment base is rotatably installed at the other end of the connecting frame, a telescopic rod used for adjusting the vertical angle of the equipment base is rotatably installed between the connecting frame and the equipment base, a rotating device is installed at the upper end of the equipment base, and a suction cup assembly is installed at the left end of the rotating device. The problems that in the prior art, although a lifting device can meet the installation requirements of curtain walls with different inclination angles during use, a vacuum suction cup mechanism does not have an adjusting function in the use process, adjustment cannot be conducted according to the curtain walls with different sizes, and the applicability of the device is reduced are solved.

The utility model relates to the technical field of full-rotation propellers, and discloses a novel shaftless electric propeller, which comprises a propelling assembly, a propeller assembly and a propeller assembly, the angle adjusting assembly is used for adjusting the vertical angle of the propelling assembly; the height adjusting assembly comprises a mounting hoop, a main sleeve rod is rotatably connected to the interior of the mounting hoop, a connecting column is slidably connected to the middle of the main sleeve rod, the propelling assembly and the angle adjusting assembly are mounted at the bottom of the connecting column, a shell is fixedly connected to the top of the main sleeve rod, and a first motor is fixedly connected to the outer side of the shell. The vertical height of the propelling assembly is changed, so that the propelling assembly is prevented from being damaged due to collision when the propeller is used in a shallow water area, the propelling assembly connected with the connecting base is driven to rotate, the power output direction of the propeller can be adjusted, the water flow movement is accelerated through the formed water flow channels, and the propeller is more convenient to use. The problem that the propelling assembly emits heat during working is solved.

The invention discloses a shot point positioning method based on three-dimensional scanning, and belongs to the field of shot point positioning method.The shot point positioning method comprises the following steps that two calibration points are arranged on a projector, and correction parameters of a projection center point, a horizontal angle and a vertical angle of the projector are obtained through calculation of the calibration points; acquiring blasting section point cloud data of a target construction tunnel based on an engineering coordinate system through three-dimensional scanning equipment, and generating a three-dimensional blasting section according to the blasting section point cloud data; a projector is erected in a target construction tunnel, two calibration points of the projector are measured through a total station, and the coordinate of the center of the projector in a current engineering coordinate system and the horizontal angle and the vertical angle of the center line of the projector are obtained; according to a blasting design drawing, a blast hole layout point location diagram of a theoretical section is obtained, and the offset distance and the height difference of each point location on the current section relative to a design line are extracted; the method is simple in shot point position correction mode, does not need to consume a large amount of manpower and material resources, and is convenient to use.

A non-vertical flow meter is provided that includes a chamber comprising an inlet and an outlet, wherein the chamber, the inlet and the outlet are disposed at a non-vertical angle. The non-vertical flow meter also includes a pivoting sensing surface and a load cell. The pivoting sensing surface disposed on an interior surface of the chamber, and the load cell is in operational communication with the pivoting sensing surface and arranged to sense pressure applied to the pivoting sensing surface and output a signal proportional to a flow rate of a material flowing within the chamber.

The invention belongs to the technical field of bridge construction measurement, and discloses a large-span bridge steel casing measuring and positioning method, which comprises the following steps: arranging two total stations on the shore, and calculating a corresponding theoretical coordinate azimuth angle according to the position coordinates of a theoretical pile-forming steel casing and the two total stations; and calculating the theoretical coordinate azimuth angle of each total station and the tangent position of the to-be-driven steel casing by combining the plane distance between the center of the upper end surface of the to-be-driven steel casing and each total station and the radius of the to-be-driven steel casing. And the total station is adopted to actually measure the to-be-driven steel casing, and the actual deviation value of the to-be-driven steel casing is calculated according to the difference value between the actually-measured coordinate azimuth angle and the theoretical coordinate azimuth angle in combination with the plane distance between the total station and the center of the to-be-driven steel casing. And adjusting the position of the pile driving barge according to the actual deviation value to ensure that the plane position of the steel casing is accurate. And the theoretical vertical angle of the steel casing is calculated, the vertical angle of the total station is adjusted to the theoretical vertical angle, and piling is stopped after piling is in place.

The utility model discloses a containing and conveying device with a small contact surface with a sample, which relates to the technical field of conveying equipment and comprises a slide way, two prismatic cylinders are arranged at two ends of the slide way, a sample for containing a needle tip is arranged above the position between the prismatic cylinders, and a sample for containing the prismatic cylinders is arranged in the middle position between the two prismatic cylinders at two ends. Angle adjusting buckles are arranged at the bottoms of the prismatic columns, vertical angle adjusting bolts are connected to the angle adjusting buckles, the side faces of the prismatic columns with a certain inclination angle are adopted for receiving samples, and the edges of the samples make point contact with the edges of the prismatic columns and do not make contact with the surfaces of the samples; the upper end of the prismatic cylinder is needle-point-shaped, so that a sample is in point contact with the needle point, and the contact area between the sample and the device is very small; the angular position adjusting device is adopted, so that the horizontal position, the horizontal angle and the vertical angle of the prismatic cylinder can be adjusted and controlled, the position suitable for containing samples can be adjusted and arranged, and the samples of different sizes and specifications can be stably contained and conveyed.

The utility model relates to the technical field of cameras, in particular to a binocular camera, which comprises a binocular camera body. The binocular camera body is provided with a vertical angle adjusting structure for adjusting the vertical angle, and the vertical angle adjusting structure comprises an arc-shaped machine shell movably arranged on the outer side of the binocular camera body in a sleeving mode. According to the utility model, the binocular camera body is mounted and positioned by adjusting the mounting hole of the side frame, so that the mounting process of the binocular camera body is simpler and quicker, an automatic horizontal calibration function can be set during shooting work, the image stability and accuracy in the shooting process are ensured, the horizontal sensor can monitor the horizontal state of the binocular camera body in real time, and the shooting efficiency is improved. And when inclination is detected, the electric telescopic rod can automatically extend or contract, so that real-time adjustment of the horizontal state is realized, the distance between the arc-shaped shell and the adjusting side frame can be flexibly adjusted through adjustment of the electric telescopic rod, and the horizontal state of the binocular camera body is further optimized.

The utility model provides a potted flower transportation packaging box, which relates to the technical field of potted flower transportation and comprises a cuboid-shaped shell, trapezoidal notches are arranged on the upper portions and the lower portions of four vertical angle edges of the shell, the angle edges can be folded inwards along the trapezoidal notches, and lifting pieces are fixed on the outer surfaces of at least two opposite angle edges. According to the potted flower transportation packaging box, stress can be more evenly distributed through the design of the trapezoidal notches, when the corner edges are folded inwards along the notches, the stress can be effectively dispersed through the shape, and material breakage or deformation caused by too high local stress is avoided; the notches are designed to be trapezoidal, so that more material connection areas can be reserved on the premise of not influencing the folding function, and the structural strength of the whole shell is improved.

The invention belongs to the field of building curtain walls, and particularly relates to a unit structure adapting to free-form surface angle change and an installation method of the unit structure. A stand column mold comprises a first stand column and a second stand column which are matched with each other, and the protruding section of the first stand column penetrates into the inner concave end of the second stand column; the angle between the first stand column and the second stand column is adjusted through a rotating part; cushion frames are mounted at the bottoms of the first stand column and the second stand column; according to the unit structure composed of the stand column mold and the cross beam mold, the stand column and the cross beam can be positioned by adjusting the stand column or the cross beam no matter whether the stand column and the cross beam are adaptive to the transverse angle or the vertical angle, and when the glass curtain wall is installed, only a small number of prefabricated stand column molds and cross beam molds are needed to adapt to free-form surface angle changes; the cross beam mold is of a separated structure, the bottom cross beam and the insertion cross beam can adjust the transverse bending angle so as to adapt to the change of the vertical section angle, meanwhile, the top cross beam is not limited by the bottom cross beam and the insertion cross beam, installation is free, and the structure is simple.

The utility model relates to the field of construction lofting, aims to solve the problems that in the prior art, an instrument cannot realize inclined plane lofting, and a worker cannot accurately measure a horizontal or vertical angle, and provides a high-precision inclined plane lofting device which comprises a structure supporting system for adjusting the level, the top of the structure supporting system is movably connected with a laser emitting system used for horizontal and vertical plane lofting and inclined plane lofting. The laser emitting system is provided with a base, the top face of the base is rotationally connected with a U-shaped rotating frame, a rotatable and fixed laser emitter is clamped between two wings of the U-shaped rotating frame, a horizontal laser emitting opening is formed in the outer wall of the laser emitter, an angle displayer is arranged on the lower portion of the horizontal laser emitting opening, and the angle displayer is located on the outer wall of the laser emitter. And the angle display is electrically connected to the U-shaped rotating frame and the laser transmitter. The inclined plane lofting device has the advantages that accurate lofting of an inclined plane is conveniently achieved, and a worker can accurately locate the horizontal angle or the vertical angle.

The invention discloses an omni-directional form scanning device suitable for a large-size rock sample. The omni-directional form scanning device comprises a bearing table, a hydraulic lifting system, a scanning system and a computer system, the hydraulic lifting system comprises a first group of lifting devices and a second group of lifting devices; the scanning system comprises a scanning device mounted on the bearing table and arranged around the rock test piece and a scanning device arranged on the side of the rock test piece; each scanning device comprises a hyperspectral camera, a high-definition camera and a vertical angle adjusting device, and the computer system controls the first group of lifting devices and the second group of lifting devices to jack the rock test piece simultaneously or alternately; the computer system receives data shot by the hyperspectral camera, matches the data with a built-in mineral spectrum library, determines mineral types and analyzes mineral components on the surface of the rock test piece; data shot by the high-definition camera is subjected to data preprocessing and multi-view alignment to complete model reconstruction, and the shape of the surface of the rock test piece is analyzed. According to the invention, the structure of the morphological scanning device is optimized, and the precision of morphological model splicing is improved.

The present invention discloses a tower crane verticality detection method, including the steps of installation, remote control transposition, laser measurement, etc., and also discloses a detection device applied to the above detection method, including an annular laser target placed on the tower crane base and an annular fixture installed on the tower crane, the upper surface of the annular laser target is provided with scale lines, the bottom of the annular fixture is provided with an annular beveled tooth groove, and the annular fixture is provided with an annular sliding cavity. The present invention realizes multi-directional and multi-point detection by adopting annular mobile control detection, improves the measurement accuracy, and can quickly fix the annular fixture by isobaric clamping, so that the annular fixture can rise with the tower crane without additional lifting, and can quickly disassemble and assemble the laser detector for verticality detection through a detachable structure, the operation is simpler, the vertical angle can be quickly obtained by the position of the laser point on the annular laser target, and detection can be performed continuously without correction, which reduces the threshold for use.

The application discloses a tunnel rock mass structure scanning system and a working method thereof. The tunnel rock mass structure scanning system comprises a rock mass scanning device, wherein the rock mass scanning device comprises a scanner, a horizontal adjusting device, a vertical adjusting device, a vertical angle adjusting structure and a hydraulic support. The fixed part of the hydraulic support is fixedly installed on the ground of a tunnel. The movable end of the hydraulic support is connected to the bottom of the vertical adjusting device. The vertical driving end of the vertical adjusting device is connected to the bottom of the horizontal adjusting device. The vertical angle adjusting structure is rotatably installed on the horizontal driving end of the horizontal adjusting device. The scanner is installed on the vertical angle adjusting structure and can rotate in the vertical direction through the vertical angle adjusting structure. In the scanning process, the hydraulic support can calibrate the levelness of the scanner. The horizontal adjusting device and the vertical adjusting device can jointly adjust the scanner to move to each preset detection point in sequence. The vertical angle adjusting structure can make the scanner rotate in the vertical direction on each detection point to comprehensively scan the measured rock mass.

A dual-light camera for evaluating the fusion quality of visible light and infrared images comprises a dual-light camera body, a horizontal angle adjusting mechanism and a vertical angle adjusting mechanism, the vertical angle adjusting mechanism comprises a U-shaped base, a rotating column and a motor, the dual-light camera body is connected to the U-shaped base through the rotating column, and the motor is connected to the horizontal angle adjusting mechanism. The dual-light camera body rotates by taking the rotating column as an axis, and an output shaft of the motor is rigidly connected with the connecting column; the horizontal angle adjusting mechanism comprises a base, a connecting column, a gear, an electric telescopic rod and a rack, the base is located below the U-shaped base, the upper end of the connecting column is connected with the U-shaped base, the lower end is connected with the base, and the gear is fixed to the outer surface of the lower end of the connecting column; the electric telescopic rod is installed on the upper surface of the base, the rack is installed on the electric telescopic rod, the rack is driven to linearly move through the telescopic action of the electric telescopic rod, and the rack is meshed with the gear. According to the invention, the vertical angle and the horizontal angle of the dual-light camera can be adjusted, and the angle adjustment is accurate and stable.

The present application discloses a method and a device for controlling a micro galvanometer of a solid-state LiDAR, and a solid-state LiDAR. The method includes acquiring a vertical angle range of a field of view scanned by the solid-state LiDAR, determining a first vertical angle of the field of view and a second vertical angle of the field of view corresponding to a preset ROI region of the solid-state LiDAR, reducing a slow axis scanning speed of the micro galvanometer to a first preset speed when it is monitored that the micro galvanometer scans the first vertical angle of the field of view, and adjusting the slow axis scanning speed of the micro galvanometer to a second preset speed when it is monitored that the micro galvanometer scans the second vertical angle of the field of view.

The utility model discloses an adjusting device for a teaching screen of a power concentration motor train unit structure, which comprises a base, a connecting plate and a body, and pulleys are fixedly arranged on the periphery of the bottom surface of the base; sleeves are symmetrically mounted on the surface of the top of the base, lifting assemblies are arranged in the sleeves, each lifting assembly comprises a threaded rod rotationally connected with the corresponding sleeve, and through cooperation of a rotating groove, a groove, a telescopic rod, a compression spring, a stabilizing block, a limiting ball, a rotating block, a circular groove, a sliding block and a limiting groove, the stability of the lifting assemblies is improved; the body can be adjusted in the left-right direction on the basis that the vertical angle of the body can be adjusted in the prior art, so that the angle of the body can be adjusted according to needs, and students can watch the body more conveniently to the maximum extent; the lifting of the body can be adjusted, so that the teaching experience of students can be improved.

The utility model discloses a device for controlling the drilling perpendicularity of a drilling machine, and relates to the technical field of drilling of drilling machines. The device comprises a crawler, a guide frame is hinged to one end of the crawler, a first electric push rod is hinged to one end of the crawler, follow-up sliding grooves are symmetrically formed in one end of the guide frame, follow-up sliding blocks are slidably connected into the follow-up sliding grooves, the output end of the first electric push rod is hinged to the follow-up sliding blocks, and a perpendicularity sensor is fixedly connected to one end of the guide frame. According to the drilling machine, when a first electric push rod is started to push a follow-up sliding block to eject out of a guide frame to rotate around a hinge shaft to be perpendicular to the ground, the drilling perpendicularity of the drilling machine body is monitored in real time through a perpendicularity sensor, and meanwhile when one end of the drilling machine body is driven to penetrate through a guide hole to be drilled into the ground, the drilling perpendicularity of the drilling machine body is monitored; one end of the drilling machine body is clamped and limited through the fixing assembly, so that the drilling precision of the drilling machine body is improved, and monitoring and guiding limiting of the vertical angle of the drilling machine body are conveniently achieved.

A non-vertical flow meter is provided. The non-vertical flow meter includes a chamber, sensing box, load cell, guide, and a spacer plate. The chamber disposed at a non-vertical angle and comprising an inlet and an outlet, wherein the inlet and the outlet are disposed at the non-vertical angle. The sensing box disposed within the chamber, wherein the sensing box has a pivoting sensing surface, the pivoting sensing surface disposed on an interior surface within the non-vertically disposed chamber. The load cell in operational communication with the pivoting sensing surface, and the guide disposed within the chamber. The spacer plate coupled between the sensing box and the load cell.

The utility model discloses a display support of an X-ray machine in the technical field of X-ray machines, which comprises a support plate, the top of the support plate is rotatably connected with a support shaft, the top of the support shaft is fixedly provided with a support seat, and the front side and the rear side of the support seat are both fixedly provided with a first handle. The supporting seat can rotate by 360 degrees on the supporting plate through the supporting shaft, a worker can rapidly rotate the supporting seat through the first handles on the front side and the rear side of the supporting seat, and therefore the transverse angle of the displayer can be conveniently adjusted, the two fixing plates are fixedly installed at the top of the supporting seat, and the connecting seat is rotationally connected between the two fixing plates, so that the displayer is convenient to adjust. The display instrument is installed at the top of the connecting base, a worker can quickly pull second handles on the left side and the right side of the display instrument, so that the vertical angle of the display instrument can be conveniently adjusted, multi-directional angle adjustment of the display instrument is achieved, and communication with a patient is facilitated.

The utility model provides an electric power receiving device which comprises a charging main body, the charging main body is a cuboid which is composed of a bottom plate and a plurality of vertical plates vertically arranged on the edge of the bottom plate, the top and the side faces of the cuboid are open, and the interior of the cuboid is a charging space; the plurality of placing plates are rotatably connected to the charging main body, and the placing plates are distributed at equal intervals in the vertical direction; the plurality of receiving ends are placed on the placing plate; the damping rotating shaft serves as a turning axis, the vertical rotating angle ranges from 0 degree to 180 degrees, the receiving end is completely exposed in front of eyes, the receiving end can be visually observed, taking and placing are convenient, taking out and verification one by one are not needed, practicability is enhanced, meanwhile, the blocking strips are arranged, and the receiving end cannot slide out of the containing plate when the horizontal line inclines by about the vertical angle.

The present invention relates to a glazing system comprising a vehicle glazing (100), the glazing having a transmission window (111) in a near-infrared range and a diverging lens (20) having a first surface (21) and a second surface (22), opposite the first surface, the second surface (22) being intended to be oriented towards the outside of the glazing, at least one of said first and second surfaces, the diverging lens (20) having a first surface (21) and a second surface (22) being structured, the structured surface comprising a set of structures, in relief, concentric around said optical axis, and according to a radial section of the structured surface, the set of structures form an alternation of facets (210) and counter-facets (211).The diverging lens (20) is arranged and configured so as to receive said emission beam (70) from the LIDAR on the facets of the structures and all or part of the structures, called reference structures, each have facets at an angle Ak with respect to said plane of the diverging lens, the angle Ak of ​​the facets in absolute value increases with the radial distance, each having a height which varies with distance from the optical axis such that the external vertical angular aperture VFOV2 is greater than the initial vertical angular aperture VFOV1 and the external horizontal angular aperture HFOV2 is greater than the initial horizontal angular aperture HFOV1. Figure for the abbreviation: Fig. 1.

To provide an easy-to-use handrail.SOLUTION: A handrail comprises a panel, a corner vertical frame 2A, and a pressing edge 3A. The panel includes a pre-attached panel 11 and a post-attached panel 12, depending on the attachment sequence. The corner vertical frame 2A has a one lateral-surface-side visible surface 2A1 respectively facing one lateral surface (111, 121) of the pre-attached panel 11 and the post-attached panel 12, and a depth-facing surface 2A2 respectively facing the depth surfaces of the pre-attached panel 11 and the post-attached panel 12. The pressing edge 3A has an other-lateral-surface-side visible surface 3A1 respectively facing the other lateral surfaces (113, 123) of the pre-attached panel 11 and the post-attached panel 12, and a depth piece 3A2 facing the depth surface of the post-attached panel 12. The pressing edge 3A is mountable in a top-bottom reversible manner, and the depth piece 3A2 of the pressing edge 3A overlaps the depth-facing surface 2A2 on the post-attached panel 12 side, allowing the pressing edge 3A to be mounted from the other lateral surface onto the corner vertical frame 2A.SELECTED DRAWING: Figure 3

A training device for ball sports 1 comprises a launching section 3 comprising a pair of launch wheels 15, the launch wheels 15 having substantially parallel axes of rotation, and an adjustment mechanism 19 configured to adjust the vertical angle of launch of the launch wheels 15; a base section 2 supporting the launching section 3; the base section 2 comprising a base swivel 6 comprising an outer perimeter base 9 sized and shaped to provide a stable contact with the ground or other surface on which the base section 2 is resting, and at least one leg 10 connected to the outer perimeter base 9 and extending upwards to connect with and support the launching section 3 above the ground or other surface, the leg or legs 10 and launching section 3 mutually configured for rotational connection so that the base section 2 can freely swivel in substantially the horizontal plane.