96 results about "Vertical angle" patented technology

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 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 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.

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.

This item is a bracket for fixing the end of a beam to a support post at the end of a safety fence, which allows the vertical angle of the beam to be adjusted.

Method and system for mapping and / or inspecting an underground pipeline infrastructure, using: a sensor probe for collecting geospatial data while travelling through a pipeline of the pipeline infrastructure, and a driving mechanism comprising a tether, for driving the sensor probe, wherein the sensor probe is provided to enter the pipeline at a vertical angle through a live-fluid entry apparatus and once inside the pipeline make a 90° angle change of direction to align with the orientation of the pipeline.

This invention belongs to the field of bridge construction surveying technology, specifically a method for measuring the verticality of bridge tower piers at close range and with large inclination angles in mountainous areas. The method includes: S1, calculating the angle between the intersection hypotenuse and the vertical line of the tower pier based on the known elevation and measured slope distance of the measuring point at the top of the tower pier, then calculating the horizontal distance and solving for the first corrected coordinates of each measuring point, thus avoiding vertical angle observation errors under large inclination angles; S2, accurately measuring the actual distance between the measuring points of the two tower piers, and using this as a constraint to adjust the first corrected coordinates to obtain a high-precision second corrected coordinate for the center of the tower top; S3, calculating the verticality based on the second corrected coordinates of the tower top and the known coordinates of the tower bottom. This invention effectively overcomes the problem of low measurement accuracy caused by close-range, large-inclination angle observations in narrow mountainous terrain, eliminates the need for multi-layered control networks, improves measurement efficiency and accuracy, and reduces operational risks and costs.

The utility model discloses a folding camera capable of rotating at multiple angles, and relates to the technical field of cameras. The device comprises a shell, the left side of an inner cavity of the shell is fixedly connected with a lifting mechanism, the right side of the lifting mechanism is fixedly connected with a positioning shell, the bottom of the positioning shell is fixedly connected with a first steering engine, and the top of the output end of the first steering engine penetrates through the positioning shell and is fixedly connected with a rotating shell. The use height of the positioning shell is adjusted through the lifting mechanism so that the positioning shell can move out of the inner cavity of the shell, the first steering engine drives the rotating shell to rotate horizontally, the second steering engine and the adjusting frame are in linkage to control the vertical angle of the camera module, the servo motor finely adjusts the orientation of the camera module through the fixing table and the control base, and multi-direction automatic rotating shooting is achieved. The conductive ring and the power connection contact ensure continuous power supply through the rotating disc, wire winding is avoided, the shooting range is expanded, and the problem that an existing mobile camera lacks an automatic multi-angle adjusting function is solved.

The present application relates to a kind of beam end bidirectional telescopic device and telescopic method, and the driven sleeper and the driven sleeper of fixed transition plate two sides and fixed transition plate two sides are respectively provided with scissor linkage mechanism, the scissor linkage mechanism is adapted to the bridge with fixed transition plate, driven sleeper and driven sleeper together with the variation amount of beam joint width is ±800mm.It is characterized in that: (1) the scissor linkage mechanism is connected between the originality and the fixed transition plate with bidirectional hinge support, can adapt to the horizontal, vertical angle of beam end at beam joint, the whole mechanism rotates flexibly, and is not easy to jam;(2) driven sleeper is connected by bolt and link installation base, and moves freely along with link, and can prevent link foundation from being warped, guarantee the stability of the whole mechanism telescoping;(3) the link and the friction surface of link are provided with ultra-high molecular weight polyethylene small resistance wear pad, can minimize the rotating friction force of link joint, and the strength is reliable;(4) link joint connecting hole and base B connecting hole are provided with high-strength shaft sleeve, can maximize the resistance to shear stress from bolt or base pin.

The invention discloses a speed-up railway precision conductor construction method with virtual control points added, which comprises the following steps: S1, arranging conductor points in a staggered manner along two sides of the advancing direction of a speed-up railway line, and arranging the virtual control points between the adjacent conductor points; s2, arranging total stations on each traverse point one by one, and arranging prisms on two front and back adjacent traverse points and adjacent virtual control points; observing each prism by using a total station to obtain a horizontal direction, a slant distance and a vertical angle from the center of the total station to the center of each prism; s3, performing gross error detection analysis on the observation values, and rejecting the detected gross error observation values or re-measuring the observation stations where the gross error observation values are located; and S4, establishing an acceleration railway conductor control network with virtual control points by using all reliable horizontal angles and horizontal distances. According to the method provided by the invention, on the premise of not increasing the burying cost of the control points, on the basis of the connecting wires, only several temporary target points are observed by each observation station, so that the effect of remarkably improving the precision and reliability of the control network is achieved.

This utility model relates to the field of adjustment mechanism technology and discloses an adjustment mechanism for a multi-angle projection bracket of a digital display projection clock. The mechanism includes a base with an adjustment component on the top for adjusting the angle. The bracket drives a connecting rod to rotate laterally on a bearing, which in turn drives the insert blocks to rotate sequentially until they align with ten sets of second slots. Then, the restoring force of a first spring causes the slider to slide back to its original position within the movable chamber, inserting the insert blocks into the second slots. This achieves the purpose of adjusting the lateral rotation angle of the digital display projection clock. Furthermore, a rotating rod rotates within a fixed base, causing another set of insert blocks to insert into a corresponding set of first slots, thus achieving the purpose of adjusting the vertical angle of the digital display projection clock. This makes angle adjustment more convenient and faster for operators, while solving the problem of cumbersome adjustment steps in existing bracket adjustment mechanisms.

The invention relates to the technical field of transformer substation equipment, in particular to a high-strength transformer substation frame type support which comprises a lower transverse frame and an upper transverse frame, two upper supports are rotationally connected to the two ends of the upper transverse frame, two lower supports are rotationally connected to the two ends of the lower transverse frame, and the upper supports and the lower supports located at the same end are rotationally connected. A support connecting mechanism is arranged between the upper support and the lower support which are located at the same end. The two threaded sliding blocks at the two ends are driven to move reversely by rotating the threaded rod, so that the two upper supports and the two lower supports are driven to rotate reversely, the supports can be unfolded when the two upper supports and the two lower supports rotate to the vertical angle, and when the two upper supports and the two lower supports rotate to the inclined angle from the vertical angle, the supports can be unfolded. The whole support can be folded and stored, compared with an existing support fixed through bolts, the support can be rapidly folded and stored, and the moving and transporting time is greatly shortened.

A billiard hitting auxiliary training device belongs to the technical field of sports equipment. The auxiliary training device for billiard hitting comprises a clamping assembly used for clamping a cue and limiting the cue; the sliding assembly is used for driving the clamping assembly to move along the sliding assembly so as to achieve ball hitting; and the rotating assembly is used for driving the sliding assembly to rotate in the horizontal plane. According to the utility model, the movement angle of the joint and the positions of the rod holding hand and the rod supporting hand are limited, so that a batter can feel a correct batting posture. And a hitting point and a subsequent walking path can be seen by aiming at the auxiliary light. The equipment has a multi-direction and angle adjusting function, and on the basis of practicing batting at the same position, direction changing selection can be carried out. And the vertical angle can be adjusted, so that the batting training of fixed rod, high rod, low rod and left-right plugging can be practiced, and the accurate batting action can be ensured.

A bending device (10) for coiled tubing protects the entire path from reel to injector while protecting the main controlled bend from reel to injector. The bending device includes a conduit (20) and a stand (80). The conduit (20) includes a bending section (30) and a flexible section (60). The main controlled bend is isolated in the bending section (30) while the flexible section (60) is designed with a smaller adjustment elbow. Changes in the vertical angle no longer cause damage when dispensing coiled tubing from different positions on the reel. Changes in the lateral angle when dispensing coiled tubing from both sides of the reel no longer cause damage. The stand (80) can be added to make more adjustments to the lateral angle.

The utility model provides a three-axis cement mixing pile machine construction positioning supporting base which comprises a support, a supporting plate is arranged on the surface of the support, a plurality of sets of positioning plates are fixedly arranged on the surface of the supporting plate, a plurality of sets of connecting holes are formed in the positioning plates, a mounting frame is welded to the outer wall of the support, and a total station is arranged on the mounting frame. Connecting columns are fixedly installed on the two sides of the support, and supporting columns are telescopically arranged on the surfaces of the connecting columns through oil cylinders. According to the three-shaft cement mixing pile machine, the vertical angle between the drill rod and the ground can be conveniently checked and adjusted, meanwhile, the drilling depth of the drill rod can be conveniently observed and recorded when the drill rod enters soil, and the construction perpendicularity and the construction quality of the three-shaft cement mixing pile machine are ensured.

The application discloses an artificial corner reflector for synthetic aperture radar interferometry calibration, and relates to the technical field of measurement and monitoring, and solves the technical problem that an existing corner reflector is not easy to adjust the angle after being fixed, and the technical scheme is as follows: the corner reflector comprises a corner reflecting plate, a vertical angle control device and a horizontal angle control device, the vertical angle control device has a movable part, the movable part of the vertical angle control device is connected with the corner reflecting plate, and is used for controlling the rotation angle of the corner reflecting plate in the vertical direction; the horizontal angle control device has a rotating part, the rotating part of the horizontal angle control device is connected with the vertical angle control device, and is used for controlling the rotation angle of the vertical angle control device in the horizontal direction, so as to control the rotation angle of the corner reflecting plate in the horizontal direction. The application can easily and accurately adjust the angles of the corner reflector in the horizontal and vertical directions, so as to satisfy the incidence of different satellite radar waves.

The invention relates to the technical field of prefabricated and assembled steel-concrete composite structure bridges, in particular to a lifting appliance and a lifting method.The lifting appliance for prefabricated and assembled steel-concrete composite structure bridges comprises an upper cross beam and a lower cross beam, and the upper cross beam and the lower cross beam are connected through a connecting frame; the connecting frame can rotate relative to the upper cross beam, the lower cross beam is hinged to the connecting frame, and the lower cross beam can swing around the hinged point of the lower cross beam and the connecting frame; and the at least two hanging parts are movably connected to the lower cross beam, and the hanging parts can be close to each other or far away from each other. The lifting appliance can meet the lifting requirements of components of different types and specifications, and the horizontal angle and the vertical angle of the component can be adjusted in the lifting process.

The invention relates to a wire clamp for the short-circuit ground protection of an electrical device, and more particularly to a wire clamp for satisfying the short-circuit ground protection of conductors arranged from horizontal to vertical angles. The wire clamp comprises a clamping device and a transmission device. The clamping device includes: a clamping block, a multifunctional connection sleeve, and a linear displacement device. The transmission device comprises: a base body, a force-applying rod, a force transmission arm, and a support arm. The wire clamp successfully enables a workerto hang the short-circuit ground wire of a conductor arranged non-horizontally, particularly a vertically downwardly arranged conductor, on the ground. The wire clamp reduces the labor intensity of the workers to a great extent, improves the work efficiency, and eliminates the hidden safety problems caused by the climbing operations.

This utility model relates to the field of auxiliary feeding technology and discloses an auxiliary feeding device for a CNC bending machine. It corrects the angle of the material by setting up a storage box, cylinder B, and a sliding strip. The material is uniformly placed inside the storage box, and slides along the inclined surface at the bottom of the storage box to the top of the pusher. Then, cylinder A is activated, controlling the extension and retraction of its output shaft to move the pusher upwards. After the pusher reaches the top, the bottom of the material slides smoothly along the top surface of the pusher and the sliding plate to the inner surface of the head of the sliding strip. Then, cylinder B is activated, controlling the extension of its output shaft to push the material towards the cleaning device. When the material passes the correction arc plate, a relative force is generated between its surface and the surface of the correction arc plate. Since the position of the correction arc plate is fixed, the angle of the material changes from a horizontal angle to a vertical angle, thus correcting the angle of the material.

The utility model discloses a manual welding and positioning die for a pin. The manual welding and positioning die comprises a positioning column and a pin plate, the pin plate is connected with the positioning columns, the thickness is not less than 3mm, and the pins are prevented from turning laterally; the pin plate is provided with a positioning hole for positioning the vertical angle of a pin and the position of a pin welding spot. If the pin plates at the same height cannot meet various pin welding requirements, the side, facing the circuit, of each pin plate is designed to be step-shaped. The manual welding positioning die is suitable for manual welding positioning of cross-shaped contact pins and T-shaped contact pins, can ensure accurate positioning of the manual welding contact pins, is simple to operate, and can effectively improve the welding efficiency and the rate of finished products.

The utility model relates to the technical field of bending forming of high-frequency welded pipes, and discloses multi-angle bending forming equipment for high-frequency welded pipes, which comprises a working table and a fixing frame, a first support frame is movably arranged on a first sliding groove, a pressing block is fixedly arranged at the lower end of a transverse plate, a pressing groove is arranged below a lower pressing roller, a groove opening is arranged on one side of the pressing groove, and a second support frame is arranged on the fixing frame. According to the device, one ends of multiple sets of high-frequency welded pipes are placed in the corresponding containing grooves in the first support frame, the other ends of the multiple sets of high-frequency welded pipes are placed on the second support, the two sets of transverse plates are pushed through the two sets of electric push rods respectively to drive the multiple sets of pressing blocks to move downwards, and the two ends of the pipes are effectively fixed; and the rotating angle of the movable roller is monitored through an angle sensor and an angle scale plate, the pipe is bent at the vertical angle again through the lower pressing roller under the cooperation of the pressing groove, and the multi-angle bending forming efficiency of the pipe is improved.

The invention relates to the technical field of ton box cleaning, and discloses all-directional ton box cleaning equipment based on high-pressure water jet, the all-directional ton box cleaning equipment comprises a cleaning table, four clamping assemblies and a cleaning assembly, and a ton box is arranged on the cleaning table; the four clamping assemblies are arranged on the cleaning table and used for clamping the outer wall of the ton box. The cleaning assembly comprises a nozzle assembly, a horizontal angle adjusting assembly, a vertical angle adjusting assembly and a position adjusting assembly, the nozzle assembly is used for cleaning the inner wall of the ton box, and the position adjusting assembly is arranged on the cleaning table and used for adjusting the spatial position of the nozzle assembly relative to the ton box; the horizontal angle adjusting assembly is arranged on the position adjusting assembly, connected with the nozzle assembly and used for adjusting the spraying angle of the nozzle assembly in the horizontal direction, and the vertical angle adjusting assembly is arranged on the horizontal angle adjusting assembly, connected with the nozzle assembly and used for adjusting the spraying angle of the nozzle assembly in the vertical direction. According to the cleaning device, all-directional and dead-corner-free cleaning of the inner wall of the ton box can be achieved.

The invention discloses an arch dam valley amplitude measuring method, device and system and a storage medium. The method comprises the following steps: acquiring meteorological data of a plurality of datum points, an instrument placement point, a highest elevation point and a lowest elevation point, and acquiring elevation information and measured values of a plurality of valley amplitude endpoints, including slant distances, vertical angles and horizontal angles; based on the meteorological data of the highest elevation point and the lowest elevation point and the elevation information of the valley amplitude endpoint, carrying out inversion to obtain meteorological data at the valley amplitude endpoint; constructing an error correction model representing a mapping relation between the meteorological data and the measurement error value by adopting a data-driven error modeling algorithm, and correcting the measurement value of the valley amplitude endpoint based on the error correction model to obtain a corrected measurement value; calculating a valley amplitude length based on the corrected measurement value; according to the invention, the manpower and instrument use cost for measuring the valley amplitude of the high arch dam is obviously reduced, and the measurement precision and the engineering applicability are improved.

This utility model relates to the field of AGV (Automated Guided Vehicle) carrying rack positioning technology, and more particularly to a mechanical limiting and precise positioning device for AGV carrying rack positioning deviation. It includes a horizontal positioning mechanism on a base plate for adjusting the horizontal position of the carrying rack, and a feeding positioning mechanism on two rear left and right base plates for limiting the feeding position of the carrying rack, as well as a vertical positioning mechanism for limiting the vertical direction of the rack's support legs. This utility model uses the feeding positioning mechanism to limit the feeding position of the carrying rack, and in conjunction with the vertical positioning mechanism, places the rack vertically on the base plate, thereby limiting the position of the carrying rack from a vertical angle. The horizontal position is pre-adjusted by the horizontal positioning mechanism to keep the lowered carrying rack horizontal, thus positioning the carrying rack along the X, Y, and Z axes, correcting the positioning deviation of the AGV carrying rack, and meeting the high-precision positioning requirements for loading and unloading by the gantry robot.

The utility model relates to the technical field of 3D modeling shooting, and discloses a shooting device for 3D modeling, which comprises a supporting table, the top of the supporting table is fixedly connected with a fixing frame, the top of the fixing frame is fixedly connected with a placing table, a rotating mechanism is arranged in the fixing frame, the top of the rotating mechanism is provided with an angle-adjusting lifting mechanism, and the angle-adjusting lifting mechanism is provided with an angle-adjusting lifting mechanism. The angle-adjusting lifting mechanism comprises an angle-adjusting assembly and a lifting assembly, the lifting assembly is arranged outside the angle-adjusting assembly, the shooting height of the camera is rapidly adjusted according to requirements through the arranged angle-adjusting lifting mechanism and a first starting motor, meanwhile, an electric push rod is started, a third gear synchronously drives a rack to move, and the angle-adjusting lifting mechanism is driven to rotate. And furthermore, a plurality of cameras can be synchronously driven to perform vertical angle adjustment in the rotating process, so that the shooting angles of the cameras do not need to be manually adjusted one by one in the early-stage preparation period, the working efficiency is further improved, and the early-stage preparation time is shortened.

The utility model discloses adjustable real-time monitoring equipment, and relates to the technical field of monitoring equipment. The monitoring device comprises a fixing body and a monitoring device arranged on the front side of the fixing body, and further comprises an adjusting part arranged on the fixing body; the fixing parts are arranged on the fixing body, the number of the fixing parts is multiple, and the multiple fixing parts are installed on the fixing body; wherein the number of the fixing parts is four, the adjusting part comprises a left-right adjusting assembly, and the left-right adjusting assembly is arranged on the front side of the fixing body; the up-and-down adjusting assembly is mounted on the left-and-right adjusting assembly; the up-and-down adjusting assembly extends out of the left-and-right adjusting assembly. According to the utility model, by arranging the adjusting part, the problems that the current situation that the visual field can only be passively cut due to lack of the vertical angle adjusting capability, the response of emergencies is lagged due to the limitation of the visual angle, and the requirement of modern industry and security and protection scenes on dynamic tracking is difficult to meet are solved.

The application discloses an arch dam valley width measurement method, device, system and storage medium. The method comprises the following steps: acquiring meteorological data of a plurality of reference points, instrument installation points, elevation highest points and elevation lowest points, acquiring elevation information and measurement values of a plurality of valley width endpoints, including slant distance, vertical angle and horizontal angle; based on the meteorological data of the elevation highest points and the elevation lowest points and the elevation information of the valley width endpoints, meteorological data at the valley width endpoints is obtained by inversion; an error correction model representing the mapping relationship between the meteorological data and the measurement error values is constructed by using a data-driven error modeling algorithm, the measurement values of the valley width endpoints are corrected based on the error correction model, and corrected measurement values are obtained; and the valley width length is calculated based on the corrected measurement values. The application significantly reduces the labor and instrument use cost of high arch dam valley width measurement, and improves the measurement precision and engineering applicability.

This utility model relates to the field of building construction inspection technology and discloses a verticality testing device for prefabricated building construction acceptance. It includes a connecting block, support rods, and pipe fittings. Two sets of support rods are vertically connected to the side of the connecting block. The connecting block is right-angled, with its right-angled side fitting between the wall and the ground. The two sets of support rods installed on the side can be folded and vertically unfolded by swinging. When folded, it is easy to store and transport; when unfolded into a right-angled shape, it can simultaneously fit against the ground and the wall. By using two sets of angle-adjustable support rods vertically installed on the side of the connecting block, with the two sets of support rods respectively fitting against the wall and the ground, and the connecting block fitting against the angle between the wall and the ground, the vertical angle between the wall and the ground can be quickly detected by observing the value of the angle mark corresponding to the adjustment knob on the rotating roller of the support rod. This effectively improves the accuracy and efficiency of the detection.

The present application relates to the field of hoisting installation, especially to a steel structure prefabricated part hoisting equipment. The steel structure prefabricated part hoisting equipment described in the present application can prevent the vertical angle deflection of the steel structure part during the lifting process when the steel structure part is hoisted horizontally for installation, and can control the extension and retraction of the pull rope through the electric winding machine when the steel structure part is hoisted obliquely for installation, so that the steel structure part can be hoisted obliquely at a specified angle. The steel structure prefabricated part hoisting equipment described in the present application can solve the technical problem that the existing steel structure part hoisting equipment cannot adjust the steel structure part to any oblique angle for hoisting, and can increase the labor cost and safety hazards.

The invention concerns a system (10) of a package (2) containing a product and an apparatus (1) using said product, the apparatus being refilled by the product contained in the package, wherein a code (21) related to the contained product is associated to the package, said code being a two dimension code and said code presenting a predetermined surface Scode, and wherein the apparatus comprises a code reader (11) to read the code associated to the package, said code reader being an image capturing device, said image capturing device being defined by : - a predetermined focal range, - a horizontal angle of view <semantics>α<annotation encoding="application / x-tex">\alpha< / annotation>< / semantics> and a vertical angle of view <semantics>β<annotation encoding="application / x-tex">\beta< / annotation>< / semantics>, wherein the apparatus comprises a housing structure (16) and a cavity (12) inside the housing structure, wherein the image capturing device is positioned at the back side of the cavity.