174 results about "Edge surface" patented technology

The combined type landscape flower box comprises a water receiving seat and a box body arranged on the upper portion of the water receiving seat, the box body comprises a connector and a surrounding plate, flanges are arranged on the two sides of the surrounding plate, and the connector is provided with clamping grooves matched with the flanges. A rectangular frame is defined by the surrounding plates through the connectors, a bottom plate with air holes is erected at the bottom of the rectangular frame, the water receiving base is provided with a cavity, a partition plate covers the top of the cavity, the middle of the water receiving base protrudes upwards to form a conical water permeable cone, and the top of the water permeable cone penetrates through the air holes to extend into the rectangular frame. And a through hole is formed in the outer edge surface of the permeable cone. According to the combined type landscape flower box, the water receiving base is arranged at the bottom of the box body, the water receiving base contains excessive water and avoids the overflow problem, meanwhile, the box body adopts the design of the connector and the surrounding plates, the surrounding plates can be rapidly spliced through the connector, the plasticity is higher, and more landscape landscaping requirements can be met.

A panel, particularly for a piece of furniture, comprises plastic, in particular thermoplastic plastic, in particular polyethylene terephthalate. The panel has a first main surface (3), an opposing second main surface (4) and at least one edge region (5), which in turn has at least one edge-side recess (6) and at least one edge surface (8) extending between the first main surface (3) and the second main surface (4), which spatially delimits the at least one edge-side recess (6).

The utility model discloses a square pile film covering device, including the bottom plate, the bottom plate top installs the electric transmission belt, the top of bottom plate still is provided with the film -coated cylinder, the edge surface of film -coated cylinder is installed the taper tooth block, the outside of film -coated cylinder is provided with the servo motor, the output of servo motor is fixed with the bevel gear machine, the surface of film -coated cylinder is provided with the support ring, the support ring is fixed on the surface of bottom plate through the stand. This square pile film covering device, the motion of stake body between two electric transmission belts, when stake body passes through the film -coated cylinder, servo motor passes taper gear and taper tooth block and pushes the film -coated cylinder and rotates in the support ring, and the rotating film -coated cylinder drives the winding wheel and moves around the outside of stake body, at the same time, the plastic film in winding wheel is wrapped and covered on the surface of stake body and protects it, improves the film -coating efficiency, and also improves the uniformity of plastic film on the surface of stake body.

A package substrate includes: a sheet including glass; build-up layers respectively on a top surface and on a bottom surface of the sheet; structures defining electrically conductive pathways within the sheet and within the build-up layers; and a ribbon-shaped edge structure in recesses defined at lateral edges of the sheet and defined with respect to lateral edges of the build-up layers, the ribbon-shaped edge structure extending in a direction along a thickness of the sheet, having a lateral edge surface facing away from the sheet, and comprising an edge structure material not including glass and not including metal.

The utility model relates to the technical field of big cake production, in particular to a slicing device for big cake production, which comprises a slicing device main component, a controller is welded on the front surface of the slicing device main component, and a protective slicing mechanism is arranged on the upper surface of the slicing device main component. The upper surface of the slicing device main component is fixedly connected with a side edge fixing plate, and the side edge surface of the side edge fixing plate is fixedly connected with a telescopic rod. According to the slicing device for large cake production, after a telescopic rod is started, the telescopic rod can pull a storage plate at a constant speed, after a large cake on the storage plate is close to a rotating cutting piece, the large cake can be efficiently cut, after the large cake is cut, a clamping plate needs to be pushed and pulled down from a limiting plate, and the large cake can be conveniently cut. Then, the upper cover plate can be opened upwards along the hinge through the first grip, and after the upper cover plate is opened, the big cake placed on the storage plate can be conveniently used and taken.

An augmented reality system can include a waveguide having an edge surface that extends between opposing light-guiding surfaces. The waveguide can guide light toward the edge surface. The waveguide can include a reflectivity-reducing film, such as an absorptive film or a photovoltaic film, disposed on the edge surface. To form the reflectivity-reducing film, curable material can be disposed onto a dissolvable film. The curable material can be cured while disposed on the dissolvable film such that the cured material forms a reflectivity-reducing structure on the dissolvable film. The dissolvable film can be dissolved such that the reflectivity-reducing structure remains intact as a reflectivity-reducing film that can be adhered to the edge surface, such as with a primer layer. The edge surface can include nanostructures, sized smaller than half a wavelength of the guided light, that can reduce a reflectivity of the edge surface.

The present application relates to the field of additive manufacturing, more particularly to a thin film stable configuration of a multi-cell lattice structure and an additive manufacturing construction method, comprising a plurality of hollowed-out single-cell lattice structures, a plurality of hollowed-out single-cell lattice structures are symmetrically combined with the outer edge surface of the triangular plate as the mirror surface to form a double-unit hollowed-out single-cell lattice structure and a four-unit hollowed-out single-cell lattice structure, and the four-unit hollowed-out single-cell lattice structure is taken as a basic unit array to form a thin film stable configuration of a multi-cell lattice structure; the method comprises the following steps: S1: constructing an equivalent model of the hollowed-out single-cell lattice structure; S2: taking the equivalent model as the basis to additively manufacture a single-cell lattice structure model; S3: the single-cell lattice structure is subjected to material processing to form the hollowed-out single-cell lattice structure; the structure has better thermodynamic performance, strength performance, lightweight and shock absorption and energy absorption effect compared with the general single-cell lattice structure.

The utility model discloses a steel box girder edge correcting device which comprises a steel box girder and a movable machine frame, the steel box girder is located above the movable machine frame, a hydraulic assembly used for adjusting the height of the movable machine frame is installed in the movable machine frame, one end of the hydraulic assembly extends upwards to the outside of the movable machine frame, and the other end of the hydraulic assembly extends upwards to the outside of the movable machine frame. By means of the design that the surface of the steel box girder is cleaned in advance through cooperation of the steel brush assembly and the cleaning assembly, interference of sundries, dust, oil stains and the like is effectively eradicated, and the steel box girder edge correcting device has the advantages that the steel box girder edge correcting device is simple in structure, convenient to use and high in practicability. According to the steel box girder straightening device, the first straightening upper transverse plate can be tightly attached to the surface of the edge of the steel box girder, straightening force can be evenly and stably transmitted to the surface of the edge of the steel box girder, it is guaranteed that each deformation area of the steel box girder can be accurately stressed in the straightening process, and the straightening precision and the working efficiency are greatly improved.

The utility model discloses an assembled moxa -moxibustion ware, including moxa stick fixed part and the moxa stick of connecting in moxa stick fixed part bottom, filter part, including the top ring of top, the sealing ring of fixed top ring bottom, moxa -moxibustion barrel, including the cylinder, sealing ring outer edge surface and the inner wall extrusion of cylinder fit, connecting assembly, including the thread sleeve ring of thread connection in the surface of cylinder, the extruding piece of symmetrical rotation connection in the top of thread sleeve ring both ends, the extruding pad of connecting in extruding piece top end bottom surface, through the connecting assembly of design, can complete the connection between filter part and moxa -moxibustion barrel, and personnel only need to rotate thread sleeve ring, drive extruding piece to go down, let extruding piece firmly extrude the top of top ring, complete the connection between filter part and moxa -moxibustion barrel, and the advantage of this design is that, first, the combination is convenient and quick to disassemble, second, in the process of frequent disassembly, the wear degree of overall structure is small, and the sealing property and the connection strength are good.

The utility model relates to a kind of foldable weather equipment, including mounting block, connecting rod and wind bowl.Mounting block is three prism shape;The axis of connecting rod is parallelly arranged with the edge surface of mounting block, and connecting rod is three, and the first end of each connecting rod is respectively arranged with the three edge surfaces of mounting block, and rotationally connected along the direction perpendicular to its edge surface, and connecting rod has the working position that can be positioned to vertical mounting block central axis;The bowl mouth end plane of wind bowl is parallelly arranged with the edge surface of mounting block, and wind bowl is three and is respectively arranged with the three edge surfaces of mounting block, and the side edge of wind bowl is respectively fixedly connected with the second end of three connecting rods.The utility model is rotationally connected with the cooperation of connecting rod and mounting block, solves the problem that traditional weather equipment is difficult to consider monitoring function and portability, and folding storage is inconvenient and operation is complicated.

The application discloses a method and device for testing interfacial water in a Z direction with nanometer scale step by Raman spectrum, and the method comprises the following steps: providing a bottom plate and an upper substrate on the top surface of the bottom plate, modifying the top surface of the bottom plate and the bottom surface of the upper substrate according to the interfacial type of the interfacial water to be tested; the left edge surface of the top surface of the bottom plate is attached to the left edge surface of the bottom surface of the corresponding upper substrate, and a partition is arranged between the top surface of the bottom plate and the bottom surface of the corresponding upper substrate; the partition forms a gap with increasing height between the top surface of the bottom plate and the bottom surface of the upper substrate; the water solution to be tested is added in the gap, the step length of the horizontal movement of the laser Raman is set, the Raman spectrum at different distances in the Z direction is obtained by detection, and the interfacial water condition at different distances in the Z direction is obtained by analysis. The method successfully analyzes the change of the interfacial water structure at different distances in the Z direction with nanometer scale for the first time.

The utility model discloses a high sharpness injection needle, including needle tube and needle tip, the needle tip adopts three -stage tapering type multi -edge surface structure, and this three -stage tapering type multi -edge surface structure is composed of main cutting part, transition part and micro blade part, the main cutting part includes three symmetrical distribution's first inclined plane, and every first inclined plane bifurcates two second inclined planes to form transition part, and every second inclined plane bifurcates two third inclined planes to form micro blade part, the needle tip surface is equipped with a plurality of micro -groove, and the third inclined plane intersection of on micro blade part forms nanometer -class blade edge, and this blade edge edge is equipped with periodic micro sawtooth. The utility model discloses a needle tip is three -stage tapering type multi -edge surface structure, and the puncture resistance is reduced in stages, and the pain feeling is reduced, sets up micro sawtooth and can reduce the tissue contact area through " point cutting", and the local stress concentration when puncturing, and then delay passivation, sets up micro -groove and can guide the tissue fluid flow, destroys the negative pressure adsorption effect, and improves the needle insertion smoothness.

The present disclosure relates to a scribe structure for a memory device. Apparatuses and methods for fabricating a chip are described. An example method includes forming at least one first dielectric layer over a substrate; forming at least one second dielectric layer over the first dielectric layer; forming a cap layer over the at least one second dielectric layer; forming a trench over the substrate by etching; covering at least one edge surface of the at least one first dielectric layer in the trench with a liner; forming a hole through a portion of the cap layer and the at least one second dielectric layer; depositing a conductive layer on the cap layer and the liner in the hole; and forming a conductive pillar on the conductive layer in the hole by electroplating.

This utility model discloses a highly stable medical barbed suture, belonging to the field of medical devices. The medical barbed suture of this utility model includes a suture body and a plurality of barbs spaced apart along the length of the suture body. The barbs are cut by removing material. The outer side of each barb has an insertion surface and an outer edge surface sequentially from front to back. The insertion surface extends obliquely outward from the front side of the barb's root to the outer edge surface. The outer edge surface is parallel or approximately parallel to the centerline of the suture body. The inner surface of the barb extends obliquely outward from the rear side of the barb's root, and the outer edge surface intersects with the inner surface to form a barb tip. The barbs of this utility model have a stable shape and good inner support, balancing tissue damage and tissue holding power. Furthermore, the outer edge surface of the barb is parallel or approximately parallel to the centerline of the suture body, allowing for maximum width cutting to form the barbs, reducing raw material waste. Larger barbed sutures can be made from the same diameter round suture, reducing the manufacturing cost of the barbed suture.

The application discloses a multi-circle gradually-changing impedance edge loading tight field device, which is a novel device different from traditional sawtooth tight field and edge curl tight field. The device sprays conductive paint with gradually-changing impedance on the edge of a parabolic surface in multiple circles, and controls the impedance value of the conductive paint in the gradually-changing manner. Compared with common sawtooth edge processing and edge curl processing, the design of the multi-circle gradually-changing impedance does not need to process the edge shape into sawtooth or curve, but only needs to load impedance on the edge surface of the parabolic reflecting surface, so that the processing steps of the tight field reflecting surface are greatly simplified, the processing difficulty is reduced, and the cost is saved. The device disclosed by the application fully meets the performance indexes of the tight field, can be used as an upgrade and substitution of the existing tight field product, and is one of the development trends of future low-frequency test fields.

The utility model discloses a light-emitting aluminum veneer surface treatment device, which relates to the technical field of aluminum veneer processing equipment, and comprises a pneumatic grinding head and a grinding assembly, the grinding assembly comprises a horizontal grinding unit and a vertical grinding unit; the horizontal grinding unit is connected with the output end of the pneumatic grinding head, and the horizontal grinding unit in rotating operation is used for grinding the upper surface of the aluminum veneer; the vertical grinding units are distributed on the inner side of the middle of the horizontal grinding unit, the vertical grinding units in a contracted state and the horizontal grinding unit grind the upper surface of the aluminum veneer together, and the vertical grinding units protrude to the bottom of the horizontal grinding unit. The grinding device is used for grinding the side face of the folded edge portion of the aluminum veneer under the state that the orientation of the pneumatic grinding head is not adjusted. By arranging the polishing assembly with the polishing cylinder, polishing operation of the upper surface of the aluminum veneer and the surface of the folded edge of the aluminum veneer can be achieved, in the process, the orientation state of the pneumatic polishing head does not need to be adjusted, and overall operation is more convenient.

The present invention provides a panel support structure and panel support method that can increase the support strength of the panel material. [Solution] The panel support structure is a panel support structure that supports the edge of a panel with an opening groove of a frame material, wherein the frame material has a bottom wall that forms the bottom surface of the opening groove, a first side wall that forms the indoor side surface of the opening groove, and a second side wall that forms the outdoor side surface of the opening groove, and the panel support structure comprises a first bead material sandwiched between the indoor surface of the panel material and the first side wall, a second bead material sandwiched between the outdoor surface of the panel material and the second side wall, a bottom adhesive member filled between the edge surface of the panel material and the bottom surface of the opening groove, a first side adhesive member provided on the outer circumference of the first bead material and filled between the indoor surface of the panel material and the indoor side surface of the opening groove, and a second side adhesive member provided on the outer circumference of the second bead material and filled between the outdoor surface of the panel material and the outdoor side surface of the opening groove.

An assembly comprising a first panel (10), a second panel (20) and mechanical locking means for locking the first panel (10) to the second panel (20), the mechanical locking means comprising a rod-shaped element (31) and an insertion groove (32) configured to be inserted into the insertion groove (32), the rod-shaped element (31) extending from a first edge surface (11) at a first angle (alpha1), the insertion groove (32) extends from the second panel surface (22) at a second angle ([alpha] 2) into the second panel surface (22), the mechanical locking device further comprising a locking groove (35) comprising a locking surface (37) extending from the first edge surface (11) or from the second panel surface (22) at a third angle ([beta]), and a locking member (34), the locking member (34) is configured to be inserted into the locking groove (35) and locked against the locking surface (37), the third angle (beta) being different from the first angle (alpha1).

The invention discloses a light scaffold matrix supporting leg and a mounting method thereof, and relates to the technical field of scaffolds.The light scaffold matrix supporting leg comprises a vertical rod module and a plurality of supporting modules; a reserved opening is formed in the edge face of one side of each vertical rod module, and the edge faces of the other two sides of each vertical rod module are provided with a plurality of first inserting parts and a plurality of first inserting openings respectively. The edge surfaces on the two sides of the supporting module are also provided with a plurality of first inserting parts and a plurality of first inserting ports; a mounting method for matrix supporting legs of a light scaffold comprises the following steps that S1, a proper matrix arrangement mode is designed according to an application scene; s2, stacking and building to form a whole; and S3, vertical rods of the light scaffold are inserted into the reserved openings, and then the light scaffold is built based on the multiple vertical rods. The structural stability of the light scaffold erected on the non-hard ground can be improved, and meanwhile the probability that the light scaffold damages the non-hard ground is reduced.

The utility model discloses a water-repellent zipper which comprises a first zipper tape and a second zipper tape which are oppositely arranged, and zipper teeth are arranged on the edges of the first zipper tape and the second zipper tape respectively. The zipper head is matched with zipper teeth on the first zipper belt and the second zipper belt and used for controlling opening and closing operation of the zipper. The outer edges of the upper end face and the lower end face of each zipper tooth are respectively provided with a layer of rubber ring, the rubber rings are directly fixed to the surfaces of the outer edges of the zipper teeth through a thermal forming technology, and the rubber rings are firmly connected with the zipper teeth through the material viscosity of the rubber rings. The zipper is suitable for application scenes requiring short-time water-repellent performance, such as backpacks, sportswear, outdoor articles and the like, moisture permeation can be effectively prevented on the premise of low cost, and meanwhile opening and closing smoothness and durability of the zipper are kept.

[Problem] To perform coating that avoids producing an uncoated portion on an end surface of sheet-shaped member while reducing adhesion of a liquid material to surfaces other than the end surface of the sheet-shaped member. [Solution] Provided is a coating method for an end surface of a sheet-shaped member using a nozzle 10 having a groove 13 that has a cross-sectional shape which tapers toward the deepest part thereof and a liquid material supply path 16 that is open at the deepest part of the groove 13, said coating method comprising: a step for disposing the nozzle 10 and a sheet-shaped member 21 such that an end surface of the sheet-shaped member 21 is positioned inside the groove 13; a step for supplying a liquid material from the liquid material supply path 16 to form a droplet 100 which has a liquid surface that is a convex meniscus at the open end of the liquid material supply path 16; and a step for moving the sheet-shaped member horizontally in a state in which the end surface of the sheet-shaped member 21 is in contact with the liquid surface of the droplet 100, thereby coating the end surface. Also provided is an automatic coating device that performs said method.

A semiconductor device includes: a semiconductor body with an edge region arranged between an inner region and an edge surface; a first semiconductor region of a first doping type in the inner region; and a second semiconductor region of a second doping type in the inner and edge regions. An edge termination structure includes: a third semiconductor region in the edge region adjoining the first semiconductor region; a surface section of the second semiconductor region adjoining a first main surface of the semiconductor body; and an amorphous passivation layer having a specific resistance higher than 109 Ωcm adjoining the third semiconductor region and the surface section. An electrically active doping dose of the third region at a lateral position spaced apart from the first region by 50% of a width of the edge termination structure is at least QBR / q, wherein QBR is breakdown charge and q is elementary charge.

The invention relates to a crystal growing device, which comprises a crucible, a crystal growing device, a crystal growing device, a crystal growing device and a crystal growing device, and is characterized in that the crucible is provided with a detachable crucible cover which is provided with seed crystals; the filtering structure is located in the crucible, and the filtering structure is detachably installed on the surface of the inner wall of the crucible; the flow guide structure is detachably mounted on the surface, close to one side of the crucible cover, of the filtering structure, and a preset inclination angle is formed between the flow guide structure and the surface of the filtering structure, so that material airflow at the edge of the crucible is guided to the center of the crucible. The flow guide structure is arranged on the surface, close to one side of the crucible cover, of the filtering structure, and the preset inclination angle is formed between the flow guide structure and the surface of the filtering structure, so that the material airflow at the edge of the crucible is guided to the center of the crucible, and the material flow on the center surface and the edge surface of the seed crystal is balanced through the flow guide structure; the surface growth uniformity of the seed crystal is improved, the crystal stress is reduced, and the crystal quality is further improved.

The embodiment of the invention relates to the technical field of vehicles, and discloses a hidden type water cutting vehicle door edge covering structure, a vehicle door assembly and a vehicle, the hidden type water cutting vehicle door edge covering structure comprises a vehicle door outer plate, an outer plate reinforcing part and a vehicle door inner plate, and the outer plate reinforcing part is arranged on the side, facing the vehicle door inner plate, of the vehicle door outer plate; an edge covering structure is arranged on the peripheral edge of the car door outer plate, the edge covering structure comprises a first edge covering section, the length of the first edge covering section is set in the first direction, and the first edge covering section covers the top of the outer plate reinforcing part; a first mounting part and a second mounting part are arranged on the two different sides of the outer plate reinforcing plate in the first direction correspondingly, and a first lap joint part and a second lap joint part are arranged on the top of the automobile door inner plate. The first edge covering section and the vehicle door inner plate are arranged in a spaced mode in the second direction. A step-shaped edge surface can be prevented from appearing at the matching position of the vehicle door covering edge and the outer water cutting.

An apparatus for processing an edge surface of a wafer comprises a lower chamber having a first supporting area configured to support the wafer, an upper chamber having a second supporting area, and a first channel formed by the first supporting area, the second supporting area and peripheral areas thereof. The upper chamber is engaged with the lower chamber to position the wafer between the first supporting area and the second supporting area. The first channel is configured to provide a first space to flow one or more chemical fluids for etching an edge area of the wafer. The upper chamber comprises a protrusion part being configured to resist against an outer edge of the wafer in order to align the central axis of the wafer with the central axis of the second supporting area. This disclosure can process the edge of wafers.

A method and apparatus for the automated or partially automated production of a polymer-enhanced pipe element, which include: providing a first pipe section and a second pipe section, each having a connecting region; detecting in the connecting regions a three-dimensional shape of the first pipe section and the second pipe section; determining a spatial penetration curve as a function of a superposition of the three-dimensional shapes; determining a cut contour, as a function of the penetration curve, in each of the connecting regions of the first pipe section and the second pipe section; generating edge surfaces in the connecting regions of the first and second pipe sections along the respective cut contours; aligning the generated edge surfaces of the pipe sections; and welding the first and second pipe sections along the mutually aligned edge surfaces along the determined spatial penetration curve.

The utility model discloses a constructional engineering assembly type fireproof anti-corrosion floor slab structure, and relates to the technical field of assembly type floor slabs, the constructional engineering assembly type fireproof anti-corrosion floor slab structure comprises a floor slab, the upper end of the floor slab is provided with a plurality of stable reinforcing steel bar frames, and the stable reinforcing steel bar frames are arranged on the upper end of the floor slab. An assembly connecting plate is arranged on the surface of one side of the top end of the floor slab, an assembly connecting groove is formed in the surface of the other side of the top end of the floor slab, a waterproof roll is arranged at the upper end of the assembly connecting groove, and after the assembly connecting plate is connected with the assembly connecting groove, the waterproof roll is connected with the assembly connecting plate. According to the scheme, the problems that most existing assembly type floor slabs are assembled in the mode that the edge surfaces are in aligned contact, the positions of the connecting positions are prone to deviation, deviation occurs, water enters the connecting positions, rapid cleaning is not easy, and consequently the floor slabs are prone to corrosion and short in service life are solved.

The application discloses a method and device for processing an inner spherical surface centripetal groove by using a four-axis process tooling method, and comprises the following steps: S1, material selection: selecting aluminum as the tooling material, since the hardness of the aluminum tooling is low, the aluminum tooling is easy to process; S2, machine clamping: the aluminum tooling selected in S1 is clamped on the four-axis milling machine by the cooperation of the threaded rod, the pressing plate and the nut, and the aluminum tooling is subjected to the secondary processing. The method and device for processing the inner spherical surface centripetal groove by using the four-axis process tooling method selects the aluminum tooling with a specific specification, then clamps the aluminum tooling on the four-axis milling machine by the screw rod, the pressing plate and the nut, then starts the four-axis milling machine to mill the reference edge of the aluminum tooling, then cooperates the outer edge surface of the part with the tooling fixture, and then starts the sawtooth three-flank milling cutter to mill three right-angled triangular centripetal grooves on the inner edge surface of the part, so that the machining difficulty of the existing four-axis milling machine is solved, and the machining cost is greatly saved.

The utility model discloses a device for accelerating installation of a five-twisted steel wire gabion under the limited space condition. The device comprises a device body capable of limiting the periphery of the outer side of a steel rope woven mesh to be located on the inclined edge face of an embankment body. When the steel rope woven mesh located in the rectangular mold is smashed to fill and compact stones, the rectangular mold limits the stones to extrude the steel rope woven mesh to incline and suspend towards the inclined edge face, the efficiency of filling the stones into the steel rope woven mesh can be improved, and it is guaranteed that a gabion body formed by stacking the stones wrapped by the steel rope woven mesh is in a regular shape; the problem that the efficiency that the steel rope woven mesh is filled with stones to form a regular-shaped gabion body is affected due to the fact that the steel rope woven mesh is obliquely suspended when laid on the edge of an embankment is solved.

Light guide arrangement (10) for use in a motor vehicle lighting device (1), comprising a planar light disk (11) made of a solid transparent material, with an upper cover surface (18, 20), a lower base surface (19, 21) parallel to the cover surface (18, 20), and an edge surface connecting the cover surface (18, 20) to the base surface (19, 21), wherein a portion of the edge surface is a light entry surface (13) of the light disk, through which light (14) can be coupled into the light disk (11), so that the light (16) propagates in the light disk (11) by means of total internal reflection at the cover surface (18, 20) and the base surface (19, 21) in a principal propagation direction (z), and at least portions of the cover surface (18, 20) and / or the base surface (19, 21) form a light exit surface (17) of the form a light disk (11) through which propagating light (24) in the light disk (11) exits the light disk (11),wherein the exit surface (17) is associated with coupling elements (22) which direct incident light rays (24) from the light disk (11) via the exit surface (17).