Camera adapter and method for installing camera

Abstract

The present subject matter relates to a camera adapter for connecting a camera having an optical axis. The camera adapter comprises an adapter cover for connection to a camera housing of the camera, where the adapter cover and the camera housing form a chamber for a sensor plate of the camera. Furthermore, the camera adapter comprises a connector for connecting the camera adapter to a control unit outside the chamber, a waveguide for transmitting a signal from the sensor board to the connector, the waveguide being guided inside the chamber; and a contact surface provided on the waveguide for contacting the waveguide with the sensor plate in the chamber, in which the waveguide and the contact surface are arranged on a side wall of the camera adapter extending in the direction of the optical axis so as to contact an edge of the sensor plate in a contact direction perpendicular to the optical axis of the camera.

Description

Technical Field

[0001] The subject matter described herein relates to camera adapters and methods for mounting cameras. Background Art

[0002] The camera system has various applications and is used, for example, as a part of a higher-level unit. For example, the camera system is used in a vehicle such as a car. The camera system can send a camera image as video data to a user such as a driver, thereby improving driving safety.

[0003] The higher-level unit usually has a control unit which can be connected to the camera via a connector. Standardized connectors (also referred to as plugs in this article) are usually used in vehicles. Therefore, an adapter is required to connect the camera to the wiring harness of the higher-level unit. An adapter is a connector for the mechanical and electrical connection of different devices with, for example, different nominal widths or connection system standards. Summary of the invention

[0004] Fig.15 An example of a camera head 1000 that can be connected to a higher-level unit, not shown, via a camera head adapter 2000 is shown.

[0005] The camera 1000 includes a sensor board 1100 having a light-sensitive sensor 1110 , such as a CCD sensor. In addition, the camera 1000 includes an optical system 1200 , such as a lens, for imaging an object on the sensor 1110 , which is held by a camera housing 1300 .

[0006] The optics 1200 define the optical axis Z of the camera. The optical axis (OA) is the axis of symmetry of a symmetrical optical system. The symmetry of the surface of the optics is important here. The distance and alignment between the sensor 1110 and the optics 1300 significantly determine the imaging characteristics of the camera. For example, the sensor surface is aligned perpendicular to the OA at the focus of the optics to achieve a sharp image.

[0007] For use in a higher level unit (e.g., a vehicle), a camera adapter 2000 is required to connect the sensor 1110 to a control unit (not shown) in the vehicle. Typically, the camera adapter 2000 has an adapter cover 2100 having a connector 2200 that can be connected to the sensor 1110 via a socket (hereinafter also referred to as a connection unit 1120) on the sensor board 1100. Fig.15 As shown, the connector 2200 includes a connector housing 2210 , connecting contacts 2220 and a shielding element 2230 .

[0008] Fig.15The camera head 1000 and the camera head adapter 2000 are shown before installation. Fig.16 The components 1000 and 2000 are shown after installation. In particular, the camera housing 1300 and the adapter cover 2100 are moved towards each other in a connection direction Z, here parallel to the optical axis Z, so that the sensor board is enclosed in a chamber formed by the camera housing 1300 and the adapter cover 2100. Furthermore, in an assembly step, the connection unit 1120 is connected to the connector 2200. This establishes an electrical connection between the sensor 1110 and a higher-level unit.

[0009] The lens 1200 is generally held by the camera housing 1300. When the camera 1000 and the camera adapter 2000 are mounted, the position between the sensor 1110 and the camera housing 1300 may change because the connection unit 1120 is connected to the connector 2200. In other words, a force that causes displacement and / or deformation of the sensor plate occurs.

[0010] Tolerances are also provided during assembly to achieve installation. These tolerances are caused in particular by optical requirements (eg, allowable variations in the alignment of the sensor 1110 and the optical device 1200) and electrical connection requirements (eg, secure contact of the connector 2200 and the connection unit 1120).

[0011] In particular, it should be noted that the sensor 1110 , ie the camera sensor chip, is very sensitive, so only very low insertion forces are allowed on the sensor board 1100 in the normal (perpendicular) direction, ie in the direction of the optical axis. Fig.15 and Fig.16 In the arrangement in , the tolerances in the direction of the optical axis Z are lower. Insertion forces and tensions on the sensor board during and after insertion may damage the sensitive sensor 1110. Errors include, for example, bending of the camera itself, which leads to errors in the imaging data.

[0012] exist Fig.15 and 16 In the arrangement of , the tolerances perpendicular to the optical axis Z (i.e. in the X and Y directions) are larger. In particular, when the camera is installed, the sensor is aligned with the optical device to form the camera. However, even if the connector 2100 is offset perpendicular to the optical axis Z, the connector 2100 (i.e., the electrical interface to the higher-level unit) must be firmly contacted by the connection unit 1120. However, misalignment in the X and Y directions leads to an increase in the mating force because the springs of the connector and the socket are significantly bent. However, this increases the error in the Z direction.

[0013] like Fig.16 As shown, a tolerance compensation socket can be used as a connection unit 1120 to compensate for these tolerances. Fig.16As shown, the socket 1120 is generally located in the center of the sensor board 1100 and thus occupies a large amount of space in the central area of ​​the sensor board 1100.

[0014] It should also be noted that the sensor 1110 of the camera typically has an edge length in the X and Y directions of greater than or equal to 0.1 mm to less than or equal to 2 cm. The size of the sensor 1110 is decisive for the size of the camera. It can be seen from this that the sensor board 1100 is usually not much larger than the sensor 1110. In particular, this determines the size perpendicular to the optical axis of the camera. Therefore, the space on the sensor board is usually decisive for the size of the camera. In other words, because the sensor can be very small, the space on the sensor board is limited. The connection unit 1120 is particularly problematic because it is larger than the sensor 1100 in order to ensure tolerance compensation and contact, and therefore takes up a lot of PCB space, which otherwise could have been equipped with components, making the entire PCB smaller. The connection unit 1120 is usually arranged on the optical axis or along the connection axis of the connector 2000.

[0015] In addition, if Fig.17 and 18 As shown, the insertion force F is transmitted to the sensor board 1100 at an unfavorable point in the normal direction, that is, in the Z direction (that is, in the optical axis direction). Fig.17 As shown, the sensor board 1100 is held at its edge 1102 by a fastening element 1302, for example, arranged on the housing 1300. Thus, the surface curvature is maximized by the intermediate insertion force, as shown in FIG. Fig.18 As a result, the sensor 1110 may be easily detached from the sensor board.

[0016] Furthermore, the electrical contacting of the sensor board takes place during the installation of the camera and the camera adapter without possible visual inspection.

[0017] The task is to solve the above problems. In particular, the task is to facilitate the non-destructive mounting of the sensor to the camera adapter. In particular, the mounting tolerance in the direction of the optical axis should be increased. Another task is to minimize the size of the camera. In particular, the space required by the connection unit on the sensor board should be minimized. Another task is to ensure that the connection between the connector for connection to a higher-level unit and the sensor enables transmission with a high bandwidth. Another task is to ensure reliable electrical contact even if visual inspection is not possible.

[0018] The above-mentioned object is achieved by the subject matter of the independent patent claims. Advantageous further developments are the subject matter of the dependent patent claims.

[0019] According to a general aspect, the contact surface arranged on the side wall of the camera adapter extending in the direction of the optical axis solves the above-mentioned task, because the edge of the sensor plate can thus be contacted in a contact direction perpendicular to the optical axis of the camera. In particular, this arrangement means that no forces are applied to the sensor plate in the direction of the optical axis during contact, and the sensor of the camera is not stressed. Furthermore, contacting the edge of the sensor plate means that the space in the middle of the sensor plate does not have to be used for connection units. In general, the space in the middle of the sensor plate can advantageously be used for other units, because these other units can be easily contacted from various directions.

[0020] In other words, in order to avoid mating forces on the PCB surface and save space on the PCB, the connection is made at the edge and in particular at the side of the PCB. In this way, the mating forces are applied parallel to the PCB and no socket is required on the PCB. Therefore, there is no PCB space occupied by the socket. The size of the camera system can be reduced.

[0021] Waveguides are used for the electrical path from the interface of the cable harness connector (connector) to the sensor board (i.e. to the PBC boundary) so that no encapsulated signal lines within the chamber are required, the chamber can be a closed shield, but a single conductor and, for example, two outer shielded conductors can be used.

[0022] The general idea is now described in detail. A first aspect relates to a camera adapter for connecting a camera having an optical axis. As described above, the camera consists of a sensor and an optical system. In the simplest case, the lens is a hole, i.e. a pinhole camera. By inserting a converging lens into the hole, the camera can be made smaller and the image brighter and clearer. The image is generated by optics on an electronic sensor on the opposite rear wall of the camera. The camera adapter is used to mechanically and electrically connect the camera to a higher-level unit, such as a vehicle.

[0023] The camera adapter comprises an adapter cover for connecting to the camera housing of the camera. Therefore, the adapter cover facilitates the mechanical connection of the camera, in particular the camera housing, to the camera adapter.

[0024] Furthermore, once the adapter cover and the camera housing are connected, the two parts form a housing surrounding a chamber. The sensor board of the camera is accommodated in the chamber. Thus, the adapter cover contributes to forming a part of the chamber housing, such as a cover of the chamber. A chamber is a mostly or completely closed cavity to protect the sensor board from external influences such as moisture and dirt. In particular, the adapter cover comprises or consists of a shielding material, preferably aluminum, to shield the interior of the chamber from electric and magnetic fields.

[0025] The camera adapter also comprises a connector for connecting the camera adapter to a control unit outside the chamber. The connector (also called plug) serves to disconnect and connect cables or cables for light radiation, for example. The connecting parts, i.e. the connector and the mating connector, can be aligned by form locking of the connector parts, fixed in a detachable manner by spring force (contact feet) or additionally fastened by a screw connection to prevent unintentional loosening. In particular, the camera adapter can thus be connected to, for example, a wiring harness of a vehicle.

[0026] The camera adapter also includes a waveguide for transmitting the signal from the sensor board to the connector in the chamber. Transmission via the waveguide enables the signal to be transmitted over a greater distance in the chamber.

[0027] A waveguide is a structure that conducts waves, such as radio waves (e.g., RF waveguides) or other electromagnetic waves with minimal energy loss, by directionally confining the energy transfer. Without the confinement of a waveguide, the intensity of the wave would be reduced and the high bandwidths used for camera signals could not be transmitted. Typically, a bandwidth of several Gbit / s is required for the transmission of mobile camera images. In particular, waveguides are used to transmit waves with frequencies greater than or equal to 3 MHz and less than or equal to 30 THz.

[0028] Furthermore, the camera adapter comprises a contact surface arranged on the waveguide, which is used to make the waveguide contact the sensor board in the chamber. The contact surface enables the connection terminals of the sensor board and the waveguide to be in electrical contact, so that data can be transmitted efficiently. The contact surface can also be used to compensate for tolerances. In particular, the connector, the waveguide and the contact surface are different components, which can be manufactured separately from each other and are only put together when manufacturing the camera adapter.

[0029] According to a first aspect, the waveguide with the contact surface is arranged on a side wall of the camera adapter extending in the direction of the optical axis. Thus, the side wall extends in the direction of the optical axis. Ideally, the side wall is parallel to the optical axis. As a result of the assembly process, the side wall of the camera connected to the camera adapter is parallel to the optical axis of the camera within tolerance.

[0030] The sensors of the sensor plate are arranged perpendicular to the optical axis, so that the camera can generate images with low optical errors. The sensor plate has the shape of a plate, i.e. the plate is much thinner in the direction of the optical axis than in the image plane, which extends at least over the surface of the sensor. Therefore, the boundaries at the edges of the sensor plate extend in the direction of the optical axis.

[0031] This arrangement enables the edge of the sensor plate to be contacted in a contact direction X perpendicular to the optical axis of the camera. This means that no force is transmitted to the sensor plate in the direction of the optical axis. This means that the tolerance in the direction of the optical axis can be increased compared to the case where the back side of the sensor plate is contacted.

[0032] This arrangement also means that the space in the centre of the sensor board can be used for other electrical units.

[0033] As an addition to the first aspect, according to the second aspect, the adapter cover further comprises a rear wall facing an opening defined by the side wall, and wherein the side wall protrudes from the rear wall in the direction of the opening, the opening being closable by a camera housing having optics defining an optical axis. In particular, the adapter cover can have the shape of a basin, wherein the side wall is a wall of the basin, for example to accommodate a sensor board in the basin. In other words, the rear wall is formed by a polygon, and the side wall follows the edges of the polygon, for example a rectangle. Alternatively, the side wall can also be just a structure protruding from the adapter cover, for example a pillar. These arrangements allow the side wall and the rear wall to be manufactured as one piece.

[0034] As an addition to the second aspect, according to the third aspect, the connector is arranged on the rear wall of the chamber. When the camera adapter and the camera are installed, the camera system can be installed in a higher unit to save space because the cable harness is routed away from the field of view of the camera and there is no need to further change the direction of the cable routing to avoid blocking the field of view of the camera. Alternatively, the connector can also be arranged on the side wall.

[0035] As an addition to one of the above aspects, according to a fourth aspect, the connector is shielded, preferably the connector is adapted to be connected to a coaxial cable. A coaxial cable is a two-pole cable with a concentric structure. It consists of an inner conductor (also called a signal conductor), which is surrounded by a hollow cylindrical outer conductor at a constant distance. The outer conductor shields the inner conductor from interfering radiation. It is particularly preferred that the adapter cover and in particular the side wall are also made of shielding material, preferably the adapter cover and / or the side wall include or consist of aluminum.

[0036] As an addition to the fourth aspect, according to the fifth aspect, the shielding of the connector is connected to the adapter cover. This means that the entire housing is shielded and the sensor board does not have to be additionally shielded.

[0037] As an addition to any of the above aspects, according to a sixth aspect, the waveguide includes signal conductor tracks arranged on a dielectric substrate to form a lead frame. A lead frame is a metal structure inside or on the chip (i.e., the dielectric substrate) that conducts signals. This makes it particularly easy to route signal lines in the chamber that are decoupled from the adapter cover and side walls.

[0038] As an addition to the sixth aspect, according to a seventh aspect, the lead frame further comprises two shielded conductor tracks, wherein the shielded conductor tracks and the single conductor trace are arranged on one side of the substrate. In other words, the coplanar waveguide connects the connector to the contact surface.

[0039] A coplanar waveguide is a type of electrically planar transmission line that can be manufactured using printed circuit board technology and is used to transmit microwave signals. For example, a coplanar waveguide (CPW) comprises a signal conductor track applied to (e.g. printed) a dielectric substrate and a pair of shielding conductors, one on each side of the track. All three conductors are located on the same side of the substrate and are therefore coplanar. The shielding conductor track is separated from the signal conductor track by a small gap, the width of which is constant over the entire length of the line. The shielding conductor tracks extend approximately an infinite but large distance away from the signal conductor track, so that they conceptually represent a semi-infinite plane.

[0040] Coplanar waveguides are particularly efficient at transmitting signals. They can also be used inside the chamber of a camera adapter, since after assembly the structure is protected from external influences.

[0041] As an addition to the sixth or seventh aspect, according to an eighth aspect, the lead frame further comprises a rear conductor shield, wherein the rear conductor shield is arranged on a rear side of the substrate, wherein the rear side faces a front side of the substrate, wherein the single conductor is arranged on the front side. In particular, this produces a coplanar waveguide with grounding.

[0042] As an addition to any of the above aspects, according to a ninth aspect, the camera adapter further comprises a holder for attaching the waveguide to the housing cover. In particular, the holder can be insulating. This is particularly advantageous for guiding the waveguide on the inner side of the chamber in a controlled manner. Furthermore, in the case of a shielded housing, the waveguide can be mounted in isolation relative to the housing, which is advantageous for signal transmission. Furthermore, a plurality of holders can be provided to guide the waveguide on the edge in the chamber, i.e. partially on the rear wall and partially on the side walls.

[0043] As an addition to the ninth aspect, according to the tenth aspect, a retainer is arranged between the contact surface and the connector so that the waveguide can move on the contact surface, in a compensation direction perpendicular to the optical axis and perpendicular to the contact direction, and can move in the contact direction. Therefore, the contact surface is attached to the side wall so that it can move in two directions perpendicular to the optical axis relative to the side wall. Considering that the sensor board can be mounted with large tolerances relative to the camera housing, this enables the contact surface to contact the camera. Large tolerances between the sensor board and the camera housing are advantageous because these tolerances have little effect on the imaging characteristics of the camera, so the camera can be manufactured with larger tolerances.

[0044] As an addition to one of the above aspects, according to an eleventh aspect, the contact surface comprises a spring element such that the contact surface is movable in a contact direction X. Advantageously, a pressure limiter is additionally arranged on the contact surface, wherein the pressure limiter protrudes from the waveguide in the contact direction in order to prevent excessive bending of the spring element.

[0045] The first spring element (also called tolerance compensation spring) presses the waveguide against the printed circuit board. The second spring element (also called contact spring) allows the contact surface to bend. The pressure limiter protects the contact spring from damage (excessive bending). This results in a defined contact spring force.

[0046] As an addition to one of the above aspects, according to a twelfth aspect, the extension range of the contact surface along the optical axis Z is greater than the extension range in the compensation direction Y perpendicular to the optical axis Z and perpendicular to the contact direction X, so as to increase the connection tolerance along the optical axis. Since the contact is made from the edge, the tolerance along the optical axis can be increased by forming a contact surface that is longer in the optical axis direction. In particular, the length of the contact surface in the optical axis direction is at least twice the width of the contact surface perpendicular to the optical axis.

[0047] As an addition to any of the above aspects, according to a thirteenth aspect, the side wall includes a spacer element extending perpendicular to the optical axis to limit the movement of the camera and the adapter housing in the direction of the optical axis Z. For example, the side wall includes a groove at the edge, and the camera housing is received in the groove. The spacer element prevents the sensor from being damaged during installation because the side wall does not transmit any force to the central area of ​​the sensor board.

[0048] Although not mentioned in the above description, according to an alternative aspect, the camera system may include a camera adapter according to one of the first to thirteenth aspects described above and a camera as described above.

[0049] For example, the camera system is implemented using the method of the fourteenth aspect. The method for installing a camera having an optical axis comprises the following steps:

[0050] inserting the sensor board, in particular in the direction of the optical axis, into a cavity formed in part by an adapter cover of a camera adapter having a connector for connecting to a control unit;

[0051] bringing an edge of the sensor plate in the chamber into contact with a contact surface on a side wall of the camera adapter in a contact direction, the contact direction being perpendicular to the optical axis; and

[0052] The chamber in the adapter cover is closed by attaching the adapter cover to the camera housing.

[0053] In particular, the camera adapter may be the camera adapter described in any one of aspects 1 to 13. For the description of the detailed aspects, reference is made to the description of aspects 1 to 13, which may supplement the fourteenth aspect separately.

[0054] As an addition to the method of the fourteenth aspect, according to the fifteenth aspect, the method further includes:

[0055] When the sensor board is inserted into the chamber in the direction of the optical axis, the notches arranged on the edge of the sensor board are guided by the waveguides arranged on the side walls.

[0056] This allows the contact arranged on the waveguide to be aligned relative to the sensor board in a compensation direction, which is perpendicular to the optical axis and perpendicular to the contact direction. In other words, the notch on the edge of the sensor board is a kind of guide for aligning the waveguide, which is movably arranged on the side wall.

[0057] This makes it particularly easy to achieve large tolerances in the compensation direction and promotes good contact.

[0058] Additionally or alternatively, the method may further comprise the step of contacting an edge of the sensor board in the chamber in a contact direction such that contact pins protruding from the sensor board contact the contact surface in the direction of the optical axis Z. This means that the edge of the sensor board does not necessarily have to be metallized. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to better understand the present invention, the present invention is explained in more detail with reference to the embodiments shown in the following drawings. The same components have the same reference numerals and the same component names. In addition, some features or combinations of features from the different embodiments shown and described may represent independent, creative solutions or solutions according to the present invention.

[0060] It shows:

[0061] Figure 1 Perspective view of the camera adapter;

[0062] Figure 2 A schematic cross-sectional view of a camera system with a camera adapter and a camera before installation;

[0063] Figure 3 Schematic diagram of tolerance in compensation direction;

[0064] Figure 4 Schematic diagram of the tolerance in the connection direction;

[0065] Figure 5 Schematic diagram of the connection between the sensor board and the camera adapter perpendicular to the optical axis;

[0066] Figure 6 A schematic cross-sectional view of a camera system having a camera adapter and a camera according to a first example after installation;

[0067] Figure 7 A schematic cross-sectional view of a camera system having a camera adapter and a camera according to a second example after installation;

[0068] Figure 8 A cross-sectional view of a camera system having a camera adapter and a camera after installation according to a third example;

[0069] Fig. 9 Schematic diagram of the forces in the camera system in the direction of the optical axis;

[0070] Fig.10 Top view of the waveguide;

[0071] Fig.11 Side view of the waveguide;

[0072] Fig.12 Perspective view of the waveguide;

[0073] Fig.13 Schematic cross-sectional view of a waveguide;

[0074] Fig.14 Perspective cross-sectional view of waveguide and field strength;

[0075] Fig.15 Schematic cross-sectional view of a camera system with an additional camera adapter and a camera before installation;

[0076] Fig.16 A schematic cross-sectional view of a camera system with an additional camera adapter and a camera after installation;

[0077] Fig.17 From Fig.15 A schematic diagram of the force in the optical axis direction in the camera system; and

[0078] Fig.18 From Fig.16 Schematic diagram of the forces in the optical axis direction in a camera system. DETAILED DESCRIPTION

[0079] The camera adapter will now be described with reference to the drawings. Figure 1 A perspective view of a camera adapter 10 with an adapter cover 100 , a connector 200 , a waveguide 300 , and a contact surface 400 is shown.

[0080] Figure 2 The sectional view of the camera system having the camera adapter 10 and the camera 1000 is shown. The camera adapter 10 is used to connect the camera 1000.

[0081] exist Fig.15 and Fig.16The camera 1000 is described in . In particular, the camera 1000 has an optical axis Z. As described above, the camera 1000 has a sensor board 1100 with a sensor 1110 , an optical system 1200 , wherein the optical system 1200 is held by a camera housing 1300 .

[0082] The camera adapter 10 is partially formed by an adapter cover 100. The adapter cover 100 is used to be connected to a camera housing 1300 of a camera 1000 to surround the chamber 150. Figures 6 to 8 The camera system is shown after assembly. Here, the adapter cover 100 and the camera housing 1300 are connected and form a closed chamber 150 for the sensor board 1100 of the camera 1000 .

[0083] As shown in the figure, for example, Figure 1 In the embodiment, the adapter cover 100 may be formed by a rear wall 110 and a side wall 120. The rear wall 110 is opposite to the opening defined by the side wall 120. Figure 1 and Figure 2 as well as Figures 6 to 8 As shown, the side wall 120 protrudes from the rear wall 110 in the direction of the opening. Figures 6 to 8 As shown, after assembly, the opening is closed by the camera housing 1300. Here, the camera housing 1300 holds the optical device 1200 defining the optical axis Z.

[0084] The adapter cover 100 may be made of a shielding material. For example, the adapter cover comprises or consists of aluminum. In particular, the adapter cover 100 may be an extruded housing. The side wall 120 and the rear wall 110 may form the adapter cover 100 in one piece.

[0085] In addition, for example Figure 1 As shown, spacing elements 122 and 124 extending perpendicular to the optical axis Z may be disposed on the side wall 120 .

[0086] For example, the spacer element may be an edge of the side wall 120. In addition, a groove 122 for connecting to the camera housing may be provided as a spacer element on the edge of the side wall 120. The groove 122 forming the elongated recess may cooperate with the matching groove 1322 on the camera housing 1300, as shown in FIG. Figure 8 As shown, to limit the movement of the camera relative to the adapter housing in the direction of the optical axis Z.

[0087] Additionally or alternatively, such as Figure 1As shown, the spacing element 124 may be a fastening element 124 for connecting to the sensor board. For example, the sensor board may be supported on the attachment element 124, which forms a columnar protrusion to limit the movement of the sensor board of the camera relative to the adapter housing in the direction of the optical axis Z. Therefore, the sensor board is held in the chamber, and the movement of the sensor board after installation is limited.

[0088] Figure 2 A connector 200 is shown. Similar to Fig.15 The connector 200 is formed by a connector housing 210, a connecting contact 220 and a shielding element 230. The connector 200 is used to connect the camera adapter 10 to a control unit (not shown) outside the chamber 150. Therefore, the connector 200 is a shielded connector, such as Figure 1 and Figure 8 Coaxial cable shown.

[0089] For example, Figure 8 As shown, the shielding element 230 is connected to the adapter cover 100. The connector 200 further comprises a connector housing 210, which may be made of or may include plastic. The connector housing 210 protects the connecting contacts 220 and the shielding element 230.

[0090] The connector 200 may be arranged on the rear wall 110 of the adapter cover 110. In other words, the connector is arranged on the side of the camera system opposite to the optical device 1300. Figure 1 and Figure 8 As shown, the connector 200 can be relatively large compared to the electrical connections in the chamber. Thus, even a compact camera system can be easily handled.

[0091] In addition, if Figure 1 and Figure 2 As shown, the camera adapter 10 includes a waveguide 300 for transmitting a signal from a sensor board 1100 to a connector 200, and the waveguide 300 is arranged in the chamber 150. A contact surface 400 is arranged on the waveguide 300. The contact surface 400 establishes an electrical contact between the waveguide 300 and the sensor board 1100 in the chamber. The waveguide 300 and the contact surface 400 are arranged on a side wall 120 of the camera adapter 10, and the side wall 120 extends in the direction of the optical axis Z so as to contact an edge 1102 of the sensor board 1100 in a contact direction X perpendicular to the optical axis Z of the camera 1000.

[0092] like Figure 1As shown, a first holder 310 is provided for fastening the waveguide 300 to the rear wall 110 of the adapter cover 100. Additionally or alternatively, a second holder 320 is provided for fixing the waveguide 300 to the side wall 120 of the adapter cover 100. Each of the holders 310, 320 enables the waveguide 300 to be guided in a controlled manner in the chamber 150, which is particularly necessary because the assembly is performed without visual inspection. In particular, the holder comprises or is made of an insulating material.

[0093] In addition, if Figure 1 As shown, the holders are arranged between the contact surface 400 and the connector 200, ie one holder is arranged on the rear wall 110 and one holder is arranged on the side wall 120. Thus, the waveguide can be guided on the edge, which is advantageous when the connector is arranged on the rear wall 110.

[0094] The second retainer 320 disposed centrally on the side wall 120 is used to increase the tolerance, as will be referred to in Figure 3 and Figure 5 Further explained.

[0095] like Figure 3 As shown, the waveguide 300 can be movably arranged relative to the side wall 120 at the contact surface 400 along a compensation direction Y, which is perpendicular to the optical axis Z and perpendicular to the contact direction X.

[0096] In addition, for example Figure 5 As shown, the sensor board 1100 may have a notch 1120, which is arranged at an edge 1102 of the sensor board. During assembly, the notch 1120 guides the waveguide 300, the contact surface 400 is arranged on the waveguide 300 and the waveguide 300 is arranged on the side wall 110. This ensures that the contact of the waveguide 300 with the sensor board 1100 is aligned in the compensation direction Y. Therefore, even with a large tolerance in the compensation direction Y, it can be ensured that the contact surface 400 reliably contacts the sensor board.

[0097] In addition, if Figure 4 As shown, the waveguide can be arranged movably on the contact surface in a contact direction X perpendicular to the optical axis Z by means of a holder 320 .

[0098] In addition, for example Figure 4 As shown, the contact surface 400 may include spring elements 410 and 420, so that the contact surface 400 can be moved in the contact direction X. In particular, the tolerance compensation spring 410 can be arranged between the side wall 120 and the waveguide 300. This pre-tensions the contact surface 400. In addition, the contact spring 420 can be arranged between the waveguide 300 and the sensor plate. Both springs help to ensure that tolerances in the contact direction X can be compensated.

[0099] Also like Figure 4 As shown, a pressure limiter 430 is arranged on the contact surface, wherein the pressure limiter 430 protrudes from the waveguide in the contact direction X to prevent excessive bending of the contact spring 420. The pressure limiter 430 protects the contact spring from damage (excessive bending). This results in a defined contact spring force.

[0100] In addition, if Figure 1 and Figure 2 As shown, the extension of the contact surface 400 along the optical axis Z is greater than in the compensation direction Y. Thus, the tolerance of the connection along the optical axis Z is increased.

[0101] Next, Figures 6 to 8 A camera system 1 is described, wherein a Figure 1 and Figure 2 The camera adapter 10 is connected to the camera 1000, such as Figure 2 It should be noted that Figure 8 Only the sensor plate is shown without the sensors.

[0102] The following method can be used for installation. The method first comprises the step of inserting the sensor board 1100 into a cavity 150, which is partially formed by the adapter cover 100 of the camera adapter 10. Furthermore, the method comprises the step of contacting the edge 1102 of the sensor board 1100 in the cavity 150 with the contact surface 400 on the side wall 120 of the camera adapter 10 in a contact direction X, wherein the contact direction X is perpendicular to the optical axis Z. Finally, the method comprises closing the cavity 150 in the adapter cover 100 by connecting the adapter cover 100 to the camera housing 1300.

[0103] These steps can be performed simultaneously, i.e. when the sensor board 1100 is pre-assembled in the camera housing 1300. This means that the contacting step can be performed without visual inspection. Since the sensor board 1100 is usually mounted in the camera housing 1300 with tolerances, the camera adapter 10 facilitates compensation of these tolerances. Measures for compensating for tolerances have already been described above, in particular with reference to Figures 1 to 5 .

[0104] refer to Fig. 9 Another advantage of this arrangement is described. In particular, during assembly, forces act only on the edges of the sensor plate. Thus, it is possible to avoid Fig.17 and 18 , where sensor 1110 becomes detached from the sensor board during blind assembly.

[0105] Figure 6A first example of a sensor board is shown, in which the contacts 1130 are arranged on the edge of the sensor board 1100. This space-saving solution is possible because the edge (i.e. the edge extending in the direction of the optical file Z) can be metallized. In particular, the size of the chamber 150 can be reduced. Advantageously, this arrangement is similar to Figure 5 The solution described in is combined with that described in , i.e. the sensor plate 1100 comprises a recess for guiding the waveguide.

[0106] Figure 7 A second example of a sensor board is shown, wherein contact pins 1140 are arranged at the edge of the sensor board 1100. The contact pins 1140 protrude from the sensor board 1100 in the direction of the optical axis Z. An advantage is that an additional current surface can be formed on the contact pins, which may be better suited for connection.

[0107] Figures 6 to 8 The camera system is non-detachably connected, for example, the adapter cover is welded to the camera housing. In particular, the adapter cover and the camera housing can be made of the same material or include the same material.

[0108] exist Figures 10 to 14 A waveguide 300 having a contact surface 400 is described in detail. Fig.10 As shown, the waveguide 300 includes a signal conductor track 330 and two shield conductor tracks 332, 334. Fig.13 As shown, the signal conductor tracks 330 and the shielding conductor tracks 332, 334 may be arranged on one side of a dielectric substrate 340. Furthermore, a rear conductor shield 336 arranged on the rear side of the substrate may be provided.

[0109] For example, Fig.14 3 shows the field distribution of a waveguide having a signal conductor track 330 and two shielding conductor tracks 332 , 334 .

[0110] also, Fig.11 Shown is a special reference Figure 4 The contact surface 400 described can be formed as a contact spring 420. In addition, Fig.12 Shown has been specifically referenced Figure 1 The two holders 310, 320 described are suitable for guiding a waveguide on two at least angled inner surfaces of an adapter cover.

[0111] It should be noted that Figure 1 and Figure 8 As shown, the shield conductors 332, 334 are connected to the shield of the connector 200, which is connected to the adapter cover. The shield conductors may also contact the housing between the contact surface 400 and the connector 200. In addition, Figure 5It is shown that during assembly of the adapter cover and camera housing, in addition to the signal conductor 330, the shield conductors 332, 334 are also connected to contacts on the printed circuit board.

[0112] The connection between the signal conductor 330 and the plug contact 220 is, for example, Figure 1 and Figure 8 Shown in.

[0113] The above description assumes that the higher-level unit is, for example, a vehicle. However, the higher-level unit is not necessarily a vehicle, and may be any equipment that uses camera data, such as a machine tool.

[0114] List of reference numerals:

[0115] Description of Reference Numerals

[0116] 1 Camera system

[0117] 10 Camera adapter

[0118] 100 Adapter cover

[0119] 110 Back wall

[0120] 120 Sidewall

[0121] 122 groove

[0122] 124 Fastening elements

[0123] 200, 2200 Connectors

[0124] 210, 2210 connector housing

[0125] 220, 2220 plug contacts

[0126] 230, 2230 shielding elements

[0127] 300 Waveguide

[0128] 310, 320 retainer

[0129] 330 Signal conductor track

[0130] 332, 334 Shielded conductor track

[0131] 400 Contact surface

[0132] 410 Tolerance Compensation Spring

[0133] 420 Contact spring

[0134] 430 Pressure Limiter

[0135] 1000 cameras

[0136] 1100 Sensor Board

[0137] 1102 Edge of sensor board

[0138] 1110 Sensor

[0139] 1120 Socket, connection unit

[0140] 1130 Contact

[0141] 1140 Contact pin

[0142] 1200 Optics

[0143] 1300 Camera Housing

[0144] 1322 matching groove

[0145] 1302 Fastening elements

[0146] 2000 Camera Adapter

[0147] 2100 Adapter Cover

Claims

1. A camera adapter (10) for connecting a camera (1000) having an optical axis (Z), the camera adapter (10) comprising: an adapter cover (100) for connecting to a camera housing (1300) of the camera (1000), wherein the adapter cover (100) and the camera housing (1300) form a chamber (150) for a sensor board (1100) of the camera (1000); A connector (200) for connecting the camera adapter (10) to a control unit outside the chamber (150); a waveguide (300) for transmitting a signal from the sensor board (1100) to the connector, the waveguide (300) being guided within the chamber (150); a contact surface (400) arranged on the waveguide (300), the contact surface (400) being used to bring the waveguide (300) into contact with the sensor plate (1100) in the chamber (150), The waveguide (300) and the contact surface (400) are arranged on a side wall (120) of the camera adapter (10) extending in the direction of the optical axis (Z) so as to contact an edge (1102) of the sensor plate (1100) in a contact direction (X) perpendicular to the optical axis (Z) of the camera (1000).

2. The camera adapter (10) according to claim 1, wherein: The adapter cover (100) further comprises a rear wall (110), wherein the rear wall (110) faces an opening defined by the side wall (120), and wherein the side wall (120) protrudes from the rear wall in the direction of the opening, wherein the opening can be closed by the camera housing (1300) and the optical device (1200) defining the optical axis (Z).

3. The camera adapter (10) according to claim 2, wherein: The connector (200) is arranged on a rear wall (110) of the adapter cover (100).

4. The camera adapter (10) according to any one of claims 1 to 3, wherein: The connector (200) is shielded, the connector (200) is preferably a coaxial cable, and / or wherein the adapter cover (100) is made of a shielding material, preferably wherein the adapter cover (100) comprises aluminum.

5. The camera adapter (10) according to claim 4, wherein: The shield (230) of the connector (200) is connected to the adapter cover (100).

6. The camera adapter (10) according to any one of claims 1 to 5, the waveguide (300) comprising a signal conductor track (330), the signal conductor track (330) being arranged on a dielectric substrate (340) to form a lead frame.

7. The camera adapter (10) according to claim 6, the lead frame further comprising two shielding conductor tracks (332, 334), wherein: The shielding conductor tracks (332, 334) and the signal conductor tracks (330) are arranged on one side of the substrate (340).

8. The camera adapter (10) according to any one of claims 6 to 7, the lead frame further comprising a rear conductor shield (336), wherein: The rear conductor shield (336) is arranged on a rear side of the substrate (340), the rear side facing the front side of the substrate (340), wherein the single conductor (332) is arranged on the front side.

9. The camera adapter (10) according to any one of claims 1 to 8, further comprising a holder (310, 320) for attaching the waveguide (300) to the adapter cover (100), in particular wherein: The retainer includes an insulating material.

10. The camera adapter (10) according to claim 9, wherein: The holder (310, 320) is arranged between the contact surface (400) and the connector (200) so that the waveguide (300) can move on the contact surface (400) in a compensation direction (Y) perpendicular to the optical axis (Z) and perpendicular to the contact direction (X), and can move in the contact direction (X).

11. The camera adapter (10) according to any one of claims 1 to 10, wherein: The contact surface (400) comprises spring elements (410, 420) such that the contact surface (400) is movable in the contact direction (X), in particular, wherein a pressure limiter (430) is arranged on the contact surface (300), the pressure limiter (430) protruding from the waveguide (300) in the contact direction (X) in order to prevent excessive bending of the spring element (420).

12. The camera adapter (10) according to any one of claims 1 to 11, wherein: The extension range of the contact surface (400) along the optical axis (Z) is greater than the extension range in a compensation direction (Y) perpendicular to the optical axis (Z) and perpendicular to the contact direction (X), so as to increase the tolerance of the connection along the optical axis.

13. The camera adapter (10) according to any one of claims 1 to 12, wherein: The side wall (120) comprises spacer elements (122, 124), wherein the spacer elements (122, 124) extend perpendicularly to the optical axis (Z) to limit the movement of the camera (1000) relative to the adapter housing (100) in the direction of the optical axis (Z).

14. A method for installing a camera system (1), the camera system (1) comprising a camera (1000), the camera (1000) having an optical axis (Z), the method comprising: inserting the sensor board (1100) into a cavity (150) partially formed by an adapter cover (100) of a camera adapter (10) with a connector (200) for connecting to a control unit; bringing an edge (1102) of the sensor plate (1100) in the chamber (150) into contact with a contact surface (400) on a side wall (120) of the camera adapter (10) in a contact direction (X), wherein the contact direction (X) is perpendicular to the optical axis (Z), The chamber (150) in the adapter cover (100) is closed by connecting the adapter cover (100) to a camera housing (1300).

15. The method according to claim 14, wherein: Inserting the sensor plate (1100) into the chamber (150) in the direction of the optical axis (Z), further comprising: a notch (1120) arranged at an edge (1102) of the sensor plate (1100) is guided by a waveguide (300), the contact surface (400) being arranged on the waveguide (300) and the waveguide (300) being arranged on the side wall (120), the waveguide (300) being guided through the notch (1120) so as to align the contact of the waveguide (300) with the sensor plate (1100) in the compensation direction (Y), the compensation direction (Y) being perpendicular to the optical axis (Z) and perpendicular to the contact direction (X), and / or Contacting the edge (1102) of the sensor plate (1100) in the chamber (150) in the contact direction (X) further includes: a contact pin (1140) protruding from the sensor plate (1100) in the direction of the optical axis (Z) contacts the contact surface (400).

Images