WO2009024598A1 - Optical coupling body and method for production of the coupling body - Google Patents

Optical coupling body and method for production of the coupling body Download PDF

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Publication number
WO2009024598A1
WO2009024598A1 PCT/EP2008/060946 EP2008060946W WO2009024598A1 WO 2009024598 A1 WO2009024598 A1 WO 2009024598A1 EP 2008060946 W EP2008060946 W EP 2008060946W WO 2009024598 A1 WO2009024598 A1 WO 2009024598A1
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WO
WIPO (PCT)
Prior art keywords
edge
coupling
optical
coupling body
silicone material
Prior art date
Application number
PCT/EP2008/060946
Other languages
German (de)
French (fr)
Inventor
Michael Röhr
Berthold Esders
Peter Schäfer
Thomas Weber
Original Assignee
Leopold Kostal Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by Leopold Kostal Gmbh & Co. Kg filed Critical Leopold Kostal Gmbh & Co. Kg
Publication of WO2009024598A1 publication Critical patent/WO2009024598A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
    • B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
    • B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
    • B60S1/0874—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means characterized by the position of the sensor on the windshield
    • B60S1/0881—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means characterized by the position of the sensor on the windshield characterized by the attachment means on the windshield

Definitions

  • the invention relates to an optical coupling body for coupling an optoelectronic device to a vehicle window, with a transparent coupling medium of a silicone material, which is surrounded by a peripheral edge.
  • the invention further relates to a method for producing such a coupling body.
  • Optoelectronic devices such as rain or light sensors or camera arrangements are usually coupled by means of coupling body to vehicle windows.
  • the coupling body has a coupling medium, which usually consists of a highly transparent silicone material and is used for optical coupling of an optically active component of the optoelectronic device, such as a glass prism, a light guide or a camera, hereinafter generically referred to as optics body, to a disc of a motor vehicle ,
  • the coupling medium has in addition to the photoconductive function, the task to completely fill gaps between the optical body and the vehicle window to avoid sudden changes in the refractive index.
  • the coupling medium usually consists of a low-viscosity gel-like material whose shape can be well adapted to the surfaces of the components to be coupled to each other.
  • Such materials may be designed to cure after application or self-curing after some time. At least during application, however, these materials are not dimensionally stable. Therefore, such a coupling medium is encompassed by a peripheral edge, which prevents a flow during the Ausbringphase.
  • the German patent application DE 101 19 219 A1 shows an optoelectronic device for a motor vehicle, with a transparent coupling medium of a silicone material, which is surrounded by a peripheral edge, which is integrally formed on a surface of a housing.
  • the edge of the coupling medium is formed here by a housing part, there is the problem that the edge laterally limits the beam path. This limitation of the beam path is disadvantageous, as this obliquely incident or falling light is absorbed and thus not usable for the optoelectronic device. To compensate for the coupling medium must be correspondingly large area, which results in a total of a relatively large-scale optoelectronic device.
  • the optoelectronic device could often be made considerably smaller. In principle, this could be carried out transparent to the edge formed by the housing part. However, this would result in the problem that the housing material generally has completely different optical properties than the coupling medium and thus can not be used visually equivalent effect. Also, a rigid housing edge does not mate well with a vehicle window.
  • the first part of the object is achieved in that the peripheral edge consists of a silicone material which has a higher viscosity than the silicone material of the coupling medium.
  • the second part of the object is achieved in that in a first method step, the peripheral edge is applied to the vehicle window or to the optical body of the optoelectronic device, and that in a second process step, the peripheral edge is filled with the silicone material forming the coupling medium.
  • the optical body is in this case that optical component which is optically coupled to the vehicle window by the coupling medium or the coupling body.
  • the optical body can be embodied, for example, as a prism, a lens, or a light-conducting body.
  • silicone materials for the formation of both the coupling medium and the edge have silicone gels z.
  • Silgel 612 proven, as they are characterized by a chemically largely inert behavior and physiological safety. In addition, they have extremely favorable optical properties, in particular a high transparency.
  • liquid silicone rubber liquid silicone rubber
  • the silicone materials forming the edge and the coupling medium are chosen such that they have different viscosity values at least during the application phase, but match their optical properties, in particular their refractive indices, as well as possible. Further advantageous embodiments and further developments of the optical coupling body according to the invention and the manufacturing method proposed for this purpose are described in the dependent claims.
  • FIGS. 4-6 a second exemplary embodiment of an optical coupling body
  • FIG. 7 an optoelectronic device prior to attachment to a
  • FIGS. 1 to 3 and also FIGS. 4 to 6 each illustrate the method steps for producing an optical coupling body and thus at the same time the construction of such a coupling body.
  • FIG. 1 shows a schematic view of the planar surface of an optical body (1), for example a lens, a prism or an optical waveguide.
  • an optical body (1) for example a lens, a prism or an optical waveguide.
  • a coupling body for coupling the optical body (1) to a vehicle window not shown here are set.
  • the edge (3) can be applied by various methods on the surface of the optical body (1), in particular by spraying, Pouring, by applying a so-called Vergussraupe, by gluing a prefabricated molding or by extrusion.
  • various printing methods such as screen printing or pad printing, are suitable for applying the silicone material to the optical body (1).
  • the application of the silicone material can also be effected by nozzles which can be positioned in three dimensions, comparable to the print head of an inkjet printer.
  • Such a computer-controlled spray or printing method advantageously also allows the production of relatively complex structured edge contours.
  • the edge (3) After being arranged on the optic body (1) and a possible curing, the edge (3) forms a ring-shaped or frame-like contour, as shown in FIG.
  • the peripheral edge is filled with a coupling medium (2), which also consists of a silicone material, but which preferably has a low viscous, gelatinous consistency and free space to the optical body (1), the edge (3) and, at the later final assembly, attaches to the vehicle window.
  • a coupling medium (2) which also consists of a silicone material, but which preferably has a low viscous, gelatinous consistency and free space to the optical body (1), the edge (3) and, at the later final assembly, attaches to the vehicle window.
  • the peripheral edge (3) now forms together with the filled-in coupling medium (2) a coupling body (4), which is characterized by a stable shape and largely uniform optical properties.
  • the finished coupling body (4) is shown in FIG.
  • FIGS. 4 to 6 show the method steps for producing a variant embodiment of the coupling body.
  • the difference from the coupling body described above is that within the outer circumferential edge (3) an inner circumferential edge (6) is arranged, which can be preferably prepared in the same manner as the outer peripheral edge (3).
  • the two mutually joined circumferential edges (3, 6) are shown in FIG.
  • FIG. 6 additionally shows the coupling medium (2), which in this case fills the area between the outer edge (3) and the inner edge (6).
  • the region bounded by the inner edge (6) forms a surface which is kept clear of the coupling medium (2) and, as it were, produces a window (7) for a direct optical connection to the vehicle window.
  • a window (7) can be advantageously used, for example, if the optoelectronic device has a sensor which is intended to detect the ambient brightness of the motor vehicle, in order, for example, to carry out automatic control of the driving light.
  • FIG. 7 illustrates the attachment of the optoelectronic device to a vehicle window pane (5).
  • a housing (8) includes unspecified optical and electronic components of the optoelectronic device.
  • the housing (8) by means of a bow spring (10) via locking elements (1 1) attached to the retaining ring (9), wherein the bow spring (10) at the same time with a gel-like coupling body (not visible in this figure) surface to the vehicle window (5) press on.
  • reference numeral 10 reference numeral

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Window Of Vehicle (AREA)

Abstract

An optical coupling body is described for coupling of an optical-electronic apparatus to a vehicle windshield, with a transparent coupling medium (2) made of a silicone material, which is surrounded by a perimeter edge (3), wherein the perimeter edge consists of a silicone material which has a higher viscosity than the silicone material of the coupling medium. In addition, a method is proposed for production of such coupling medium.

Description

Optischer Koppelkörper und Verfahren zur Herstellung des Koppelkörpers Optical coupling body and method for producing the coupling body
Die Erfindung betrifft einen optischen Koppelkörper zur Ankopplung einer optoelektronischen Vorrichtung an eine Fahrzeugscheibe, mit einem transparenten Koppelmedium aus einem Silikonmaterial, welches von einem umlaufenden Rand umfasst ist. Die Erfindung betrifft des weiteren ein Verfahren zur Herstellung eines derartigen Koppelkörpers.The invention relates to an optical coupling body for coupling an optoelectronic device to a vehicle window, with a transparent coupling medium of a silicone material, which is surrounded by a peripheral edge. The invention further relates to a method for producing such a coupling body.
Optoelektronische Vorrichtungen, wie z. B. Regen- oder Lichtsensoren oder auch Kameraanordnungen, werden üblicherweise mittels Koppelkörper an Fahrzeugscheiben angekoppelt. Der Koppelkörper weist ein Koppelmedium auf, welches zumeist aus einem hochtransparenten Silikonmaterial besteht und zur optischen Ankopplung einer optisch wirksamen Komponente der optoelektronischen Vorrichtung, wie beispielsweise eines Glasprismas, eines Lichtleiters oder einer Kamera, im folgenden verallgemeinernd als Optikkörper bezeichnet, an eine Scheibe eines Kraftfahrzeugs dient. Das Koppelmedium hat dabei neben der lichtleitenden Funktion die Aufgabe, Zwischenräume zwischen dem Optikkörper und der Fahrzeugscheibe vollständig auszufüllen, um sprunghafte Änderungen des Brechungsindexes zu vermeiden. Um eine zwischenraumfreie Anbindung zu erreichen, besteht das Koppelmedium üblicherweise aus einem niederviskosen gelartigen Material, dessen Form sich gut an die Oberflächen der aneinander zu koppelnden Komponenten anpassen kann.Optoelectronic devices, such. As rain or light sensors or camera arrangements are usually coupled by means of coupling body to vehicle windows. The coupling body has a coupling medium, which usually consists of a highly transparent silicone material and is used for optical coupling of an optically active component of the optoelectronic device, such as a glass prism, a light guide or a camera, hereinafter generically referred to as optics body, to a disc of a motor vehicle , The coupling medium has in addition to the photoconductive function, the task to completely fill gaps between the optical body and the vehicle window to avoid sudden changes in the refractive index. In order to achieve a gap-free connection, the coupling medium usually consists of a low-viscosity gel-like material whose shape can be well adapted to the surfaces of the components to be coupled to each other.
Solche Materialien können derart ausgebildet sein, dass sie nach dem Ausbringen ausgehärtet werden oder nach einiger Zeit von selbst aushärten. Zumindest während des Ausbringens sind diese Materialien aber nicht formstabil. Daher wird ein derartiges Koppelmedium von einem umlaufenden Rand umfasst, der ein Wegfließen während der Ausbringphase verhindert. Die deutsche Patentanmeldung DE 101 19 219 A1 zeigt eine optoelektronische Vorrichtung für ein Kraftfahrzeug, mit einem transparenten Koppelmedium aus einem Silikonmaterial, welches von einem umlaufenden Rand umfasst wird, der an eine Oberfläche eines Gehäuses angeformt ist.Such materials may be designed to cure after application or self-curing after some time. At least during application, however, these materials are not dimensionally stable. Therefore, such a coupling medium is encompassed by a peripheral edge, which prevents a flow during the Ausbringphase. The German patent application DE 101 19 219 A1 shows an optoelectronic device for a motor vehicle, with a transparent coupling medium of a silicone material, which is surrounded by a peripheral edge, which is integrally formed on a surface of a housing.
Da der das Koppelmedium umfassende Rand hier durch ein Gehäuseteil gebildet ist, ergibt sich das Problem, dass der Rand den Strahlverlauf seitlich begrenzt. Diese Begrenzung des Strahlverlaufs ist nachteilig, da hierdurch schräg ein- oder ausfallendes Licht absorbiert wird und damit für die optoelektronische Vorrichtung nicht nutzbar ist. Zum Ausgleich muss das Koppelmedium entsprechend großflächig sein, wodurch insgesamt eine relativ großbauende optoelektronische Vorrichtung resultiert.Since the edge of the coupling medium is formed here by a housing part, there is the problem that the edge laterally limits the beam path. This limitation of the beam path is disadvantageous, as this obliquely incident or falling light is absorbed and thus not usable for the optoelectronic device. To compensate for the coupling medium must be correspondingly large area, which results in a total of a relatively large-scale optoelectronic device.
Gäbe es diese seitliche Begrenzung des Strahlverlaufs nicht, könnte man die optoelektronische Vorrichtung oftmals deutlich kleinbauender ausführen. Prinzipiell könnte man hierzu den durch das Gehäuseteil ausgebildeten Rand transparent ausführen. Hierbei ergäbe sich aber das Problem, dass das Gehäusematerial im allgemeinen gänzlich andere optische Eigenschaften aufweist als das Koppelmedium und damit nicht optisch gleichwirkend verwendet werden kann. Auch koppelt ein starrer Gehäuserand nicht gut an eine Fahrzeugscheibe an.If this lateral boundary of the beam path did not exist, the optoelectronic device could often be made considerably smaller. In principle, this could be carried out transparent to the edge formed by the housing part. However, this would result in the problem that the housing material generally has completely different optical properties than the coupling medium and thus can not be used visually equivalent effect. Also, a rigid housing edge does not mate well with a vehicle window.
Es stellte sich die Aufgabe, eine optoelektronische Vorrichtung zu schaffen, die besonders kleinbauend ausgebildet sein kann und eine besonders einfache Montage des Koppelmediums an den Optikkörper und die Fahrzeugscheibe ermöglicht. Außerdem sollte ein besonders vorteilhaftes Verfahren zur Ausbringung des Koppelmediums auf den Optikkörper oder auf die Fahrzeugscheibe realisiert werden. Der erste Teil der Aufgabe wird erfindungsgemäß dadurch gelöst, dass der umlaufende Rand aus einem Silikonmaterial besteht, welches eine höhere Viskosität aufweist als das Silikonmaterial des Koppelmediums.It has set itself the task of creating an optoelectronic device that can be designed particularly compact and allows a particularly simple installation of the coupling medium to the optics body and the vehicle window. In addition, a particularly advantageous method for applying the coupling medium to the optical body or to the vehicle window should be realized. The first part of the object is achieved in that the peripheral edge consists of a silicone material which has a higher viscosity than the silicone material of the coupling medium.
Der zweite Teil der Aufgabe wird dadurch gelöst, dass in einem ersten Verfahrensschritt der umlaufender Rand auf die Fahrzeugscheibe oder auf den Optikkörper der optoelektronischen Vorrichtung aufgebracht wird, und dass in einem zweiten Verfahrensschritt der umlaufende Rand mit dem das Koppelmedium ausbildenden Silikonmaterial gefüllt wird.The second part of the object is achieved in that in a first method step, the peripheral edge is applied to the vehicle window or to the optical body of the optoelectronic device, and that in a second process step, the peripheral edge is filled with the silicone material forming the coupling medium.
Der Optikkörper ist hierbei diejenige optische Komponente, die durch das Koppelmedium bzw. den Koppelkörper optisch an die Fahrzeugscheibe angekoppelt wird. Der Optikkörper kann beispielsweise als ein Prisma, eine Linse, oder ein Lichtleitkörper ausgeführt sein.The optical body is in this case that optical component which is optically coupled to the vehicle window by the coupling medium or the coupling body. The optical body can be embodied, for example, as a prism, a lens, or a light-conducting body.
Als besonders vorteilhafte Silikonmaterialien zur Ausbildung sowohl des Koppelmediums als auch des Randes haben sich Silikongele, die z. B. unter der Handelsbezeichnung Silgel 612 erhältlich sind, erwiesen, da sich diese durch ein chemisch weitgehend inertes Verhalten und physiologische Unbedenklichkeit auszeichnen. Außerdem weisen sie äußerst günstige optische Eigenschaften auf, insbesondere eine hohe Transparenz.As a particularly advantageous silicone materials for the formation of both the coupling medium and the edge have silicone gels z. B. under the trade name Silgel 612, proven, as they are characterized by a chemically largely inert behavior and physiological safety. In addition, they have extremely favorable optical properties, in particular a high transparency.
Zur Ausbringung des Randes sind auch spritzgiessbare Silikonkautschuke vorteilhaft verwendbar, die auch als Flüssigsilikone (liquid silicone rubber) bezeichnet werden.For the application of the edge and injection-moldable silicone rubbers are advantageously used, which are also referred to as liquid silicone rubber (liquid silicone rubber).
Besonders vorteilhaft ist, wenn die den Rand und das Koppelmedium ausbildenden Silikonmaterialien so gewählt sind, dass sie zumindest während der Ausbringphase zwar unterschiedliche Viskositätswerte aufweisen, aber in ihren optischen Eigenschaften, insbesondere ihren Brechungsindizes, möglichst gut übereinstimmen. Weitere vorteilhafte Ausgestaltungen und Weiterbildungen des erfindungsgemäßen optischen Koppelkörpers sowie des hierzu vorgeschlagenen Herstellungsverfahrens sind in den abhängigen Ansprüchen beschrieben.It is particularly advantageous if the silicone materials forming the edge and the coupling medium are chosen such that they have different viscosity values at least during the application phase, but match their optical properties, in particular their refractive indices, as well as possible. Further advantageous embodiments and further developments of the optical coupling body according to the invention and the manufacturing method proposed for this purpose are described in the dependent claims.
Im folgenden soll die Erfindung anhand der Zeichnung dargestellt und näher erläutert werden. Es zeigen:In the following the invention will be illustrated with reference to the drawing and explained in more detail. Show it:
Figur 1 -3 ein erstes Ausführungsbeispiel eines optischen Koppelkörpers, Figur 4-6 ein zweites Ausführungsbeispiel eines optischen Koppelkörpers, Figur 7 eine optoelektronische Vorrichtung vor der Befestigung an einer1 -3 a first exemplary embodiment of an optical coupling body, FIGS. 4-6 a second exemplary embodiment of an optical coupling body, FIG. 7 an optoelectronic device prior to attachment to a
Fahrzeugscheibe.Vehicle window.
Die Figuren 1 bis 3 sowie 4 bis 6 verdeutlichen jeweils die Verfahrensschritte zur Herstellung eines optischen Koppelkörpers und damit zugleich den Aufbau eines solchen Koppelkörpers.FIGS. 1 to 3 and also FIGS. 4 to 6 each illustrate the method steps for producing an optical coupling body and thus at the same time the construction of such a coupling body.
Die Figur 1 zeigt in einer schematischen Ansicht die plane Oberfläche eines Optikkörpers (1 ), etwa einer Linse, eines Prismas oder eines Lichtleitkörpers. Auf dem optisch wirksamen mittleren Bereich dieser Oberfläche soll ein Koppelkörper zur Ankopplung des Optikkörpers (1 ) an eine hier nicht dargestellte Fahrzeugscheibe gesetzt werden.FIG. 1 shows a schematic view of the planar surface of an optical body (1), for example a lens, a prism or an optical waveguide. On the optically effective central region of this surface is a coupling body for coupling the optical body (1) to a vehicle window, not shown here are set.
Hierzu wird in einem ersten Verfahrensschritt auf dem Optikkörper (1 ) ein umlaufender Rand (3) aus einem relativ hochviskosen Silikonmaterial, etwa einem Silikongel oder einem spritzgießbaren Silikonkautschuk, aufgebracht.For this purpose, in a first method step, a circumferential edge (3) made of a relatively high-viscosity silicone material, such as a silicone gel or an injection-moldable silicone rubber, is applied to the optical body (1).
Der Rand (3) kann durch verschiedenartige Verfahren auf die Oberfläche des Optikkörpers (1 ) appliziert werden, und zwar insbesondere durch Aufspritzen, Aufgießen, durch Auftragen einer sogenannten Vergussraupe, durch Aufkleben eines vorgefertigten Formteils oder durch Extrudieren.The edge (3) can be applied by various methods on the surface of the optical body (1), in particular by spraying, Pouring, by applying a so-called Vergussraupe, by gluing a prefabricated molding or by extrusion.
Darüber hinaus eignen sich auch verschiedene Druckverfahren, wie Siebdruck oder Tampondruck, zum Aufbringen des Silikonmaterials auf den Optikkörper (1 ). Besonders vorteilhaft kann das Ausbringen des Silikonmaterials auch durch dreidimensional positionierbare Düsen, vergleichbar dem Druckkopf eines Tintenstrahldruckers, erfolgen. Ein solches computergesteuertes Spritzoder Druckverfahren ermöglicht vorteilhafterweise auch die Herstellung von relativ komplex strukturierten Randkonturen.In addition, various printing methods, such as screen printing or pad printing, are suitable for applying the silicone material to the optical body (1). Particularly advantageously, the application of the silicone material can also be effected by nozzles which can be positioned in three dimensions, comparable to the print head of an inkjet printer. Such a computer-controlled spray or printing method advantageously also allows the production of relatively complex structured edge contours.
Nach dem Anordnen auf dem Optikkörper (1 ) und einem eventuellen Aushärten bildet der Rand (3) eine ring- oder rahmenartige Kontur, wie sie in der Figur 2 dargestellt ist.After being arranged on the optic body (1) and a possible curing, the edge (3) forms a ring-shaped or frame-like contour, as shown in FIG.
In einem weiteren Verfahrenschritt wird der umlaufende Rand mit einem Koppelmedium (2) ausgefüllt, welches ebenfalls aus einem Silikonmaterial besteht, welches aber vorzugsweise eine niederviskose, gelartige Konsistenz aufweist und sich zwischenraumfrei an den Optikkörper (1 ), den Rand (3) und, bei der späteren Endmontage, an die Fahrzeugscheibe anfügt.In a further method step, the peripheral edge is filled with a coupling medium (2), which also consists of a silicone material, but which preferably has a low viscous, gelatinous consistency and free space to the optical body (1), the edge (3) and, at the later final assembly, attaches to the vehicle window.
Der umlaufende Rand (3) bildet nun zusammen mit dem eingefüllten Koppelmedium (2) einen Koppelkörper (4) aus, der sich durch eine stabile Form und weitgehend einheitliche optische Eigenschaften auszeichnet. Der fertige Koppelkörper (4) ist in der Figur 3 dargestellt.The peripheral edge (3) now forms together with the filled-in coupling medium (2) a coupling body (4), which is characterized by a stable shape and largely uniform optical properties. The finished coupling body (4) is shown in FIG.
Da auch der Rand (3) zur Lichteinkopplung und Lichtauskopplung verwendet werden kann, kann für vielen Anwendungen die Oberfläche des Koppelkörpers und damit auch der Flächenbedarf der gesamten optoelektronischen Vorrichtung an der Fahrzeugscheibe deutlich verringert werden. Die Figuren 4 bis 6 zeigen die Verfahrensschritte zur Herstellung einer Ausführungsvariante des Koppelkörpers. Der Unterschied zu dem zuvor beschriebenen Koppelkörper besteht darin, dass innerhalb des äußeren umlaufende Randes (3) eine innerer umlaufender Rand (6) angeordnet wird, der vorzugsweise auf die gleiche Weise wie der äußere umlaufende Rand (3) hergestellt werden kann. Die beiden ineinander gefügten umlaufenden Ränder (3, 6) sind in der Figur 5 dargestellt.Since the edge (3) can be used for light coupling and light extraction, for many applications, the surface of the coupling body and thus also the space requirement of the entire optoelectronic device on the vehicle window can be significantly reduced. FIGS. 4 to 6 show the method steps for producing a variant embodiment of the coupling body. The difference from the coupling body described above is that within the outer circumferential edge (3) an inner circumferential edge (6) is arranged, which can be preferably prepared in the same manner as the outer peripheral edge (3). The two mutually joined circumferential edges (3, 6) are shown in FIG.
In der Figur 6 ist zusätzlich das Koppelmedium (2) dargestellt, welches hier den Bereich zwischen dem äußeren Rand (3) und dem inneren Rand (6) ausfüllt. Damit bildet der vom inneren Rand (6) umgrenzte Bereich eine vom Koppelmedium (2) freigehaltenen Fläche aus, die sozusagen ein Fenster (7) für eine direkte optische Verbindung zur Fahrzeugscheibe herstellt. Ein solches Fenster (7) ist beispielsweise dann vorteilhaft verwendbar, wenn die optoelektronische Vorrichtung einen Sensor aufweist, der die Umgebungshelligkeit des Kraftfahrzeug erfassen soll, um etwa eine automatische Steuerung des Fahrlichts vorzunehmen.FIG. 6 additionally shows the coupling medium (2), which in this case fills the area between the outer edge (3) and the inner edge (6). Thus, the region bounded by the inner edge (6) forms a surface which is kept clear of the coupling medium (2) and, as it were, produces a window (7) for a direct optical connection to the vehicle window. Such a window (7) can be advantageously used, for example, if the optoelectronic device has a sensor which is intended to detect the ambient brightness of the motor vehicle, in order, for example, to carry out automatic control of the driving light.
Die Figur 7 veranschaulicht die Befestigung der optoelektronische Vorrichtung an einer Fahrzeugscheibe (5). Ein Gehäuse (8) beinhaltet hier nicht näher beschriebene optische und elektronische Komponenten der optoelektronischen Vorrichtung. Die mechanische Verbindung des Gehäuses (8) mit der Fahrzeugscheibe (5) erfolgt über einen mit der Fahrzeugscheibe (5), beispielsweise durch Kleben, verbundenen Haltering (9). Das Gehäuse (8) wird mittels einer Bügelfeder (10) über Rastelemente (1 1 ) an dem Haltering (9) befestigt, wobei die Bügelfeder (10) zugleich eine mit einem gelartigen Koppelkörper (in dieser Figur nicht erkennbar) versehene Fläche an die Fahrzeugscheibe (5) anpresst. BezugszeichenFIG. 7 illustrates the attachment of the optoelectronic device to a vehicle window pane (5). A housing (8) includes unspecified optical and electronic components of the optoelectronic device. The mechanical connection of the housing (8) with the vehicle window (5) via a with the vehicle window (5), for example by gluing, connected retaining ring (9). The housing (8) by means of a bow spring (10) via locking elements (1 1) attached to the retaining ring (9), wherein the bow spring (10) at the same time with a gel-like coupling body (not visible in this figure) surface to the vehicle window (5) press on. reference numeral
1 Optikkörper1 optic body
2 Koppelmedium 3 (äußerer) Rand2 coupling medium 3 (outer) edge
4 Koppelkörper4 coupling body
5 Fahrzeugscheibe5 vehicle window
6 innerer umlaufender Rand6 inner circumferential edge
7 Fenster 8 Gehäuse7 windows 8 housing
9 Haltering9 retaining ring
10 Bügelfeder10 bow spring
1 1 Rastelemente 1 1 locking elements

Claims

Patentansprüche claims
1. Optischer Koppelkörper zur Ankopplung einer optoelektronischen Vorrichtung an eine Fahrzeugscheibe, mit einem transparenten Koppelmedium aus einem Silikonmaterial, welches von einem umlaufenden Rand umfasst ist,1. Optical coupling body for coupling an optoelectronic device to a vehicle window, with a transparent coupling medium of a silicone material, which is surrounded by a peripheral edge,
dadurch gekennzeichnet,characterized,
dass der umlaufende Rand (3) aus einem Silikonmaterial besteht, welches eine höhere Viskosität aufweist als das Silikonmaterial des Koppelmediums (2).the peripheral edge (3) consists of a silicone material which has a higher viscosity than the silicone material of the coupling medium (2).
2. Koppelkörper nach Anspruch 1 , dadurch gekennzeichnet, dass der Rand (3), zumindest für die von der optoelektronischen Vorrichtung verwendeten optischen Wellenlängen, optisch transparent ist.Second coupling body according to claim 1, characterized in that the edge (3), at least for the optical wavelengths used by the optoelectronic device, is optically transparent.
3. Koppelkörper nach Anspruch 1 , dadurch gekennzeichnet, dass die Silikonmaterialien des Koppelmediums (2) und des Rands (3) zumindest teilweise in ihren optischen Eigenschaften übereinstimmen.3. coupling body according to claim 1, characterized in that the silicone materials of the coupling medium (2) and the edge (3) at least partially coincide in their optical properties.
4. Koppelkörper nach Anspruch 3, dadurch gekennzeichnet, dass die Silikonmaterialien des Koppelmediums (2) und des Rands (3) den gleichen Brechungsindexwert aufweisen.4. coupling body according to claim 3, characterized in that the silicone materials of the coupling medium (2) and the edge (3) have the same refractive index value.
5. Verfahren zur Herstellung eines Koppelkörpers nach Anspruch 1 ,5. A method for producing a coupling body according to claim 1,
dadurch gekennzeichnet,characterized,
dass in einem ersten Verfahrensschritt der umlaufende Rand (3) auf die Fahrzeugscheibe oder auf den Optikkörper der optoelektronischen Vorrichtung aufgebracht wird,that in a first method step, the peripheral edge (3) on the Vehicle window or is applied to the optical body of the optoelectronic device,
und dass in einem zweiten Verfahrensschritt der umlaufende Rand (3) mit dem das Koppelmedium (2) ausbildenden Silikonmaterial gefüllt wird.and that in a second method step, the peripheral edge (3) is filled with the silicone material forming the coupling medium (2).
6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass der Rand (3) durch Auftragen einer Vergussraupe gebildet wird.6. The method according to claim 5, characterized in that the edge (3) is formed by applying a Vergussraupe.
7. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass der Rand (3) durch Aufdrucken gebildet ist.7. The method according to claim 5, characterized in that the edge (3) is formed by printing.
8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass der Rand (3) durch Aufdrucken mittels Siebdruck oder Tampondruck gebildet ist.8. The method according to claim 7, characterized in that the edge (3) is formed by printing by means of screen printing or pad printing.
9. Verfahren nach Anspruch 5, dadurch gekennzeichnet dass der Rand (3) durch Aufkleben eines Formteils aus einem hochviskosen Silikonmaterial gebildet wird.9. The method according to claim 5, characterized in that the edge (3) is formed by adhering a molded part of a high-viscosity silicone material.
10. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass der Rand (3) durch Aufspritzen gebildet wird.10. The method according to claim 5, characterized in that the edge (3) is formed by spraying.
1 1. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass der Rand (3) durch Extrudieren gebildet wird.1 1. A method according to claim 5, characterized in that the edge (3) is formed by extrusion.
12. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass der Rand (3) durch Aufgießen gebildet wird. 12. The method according to claim 5, characterized in that the edge (3) is formed by pouring.
PCT/EP2008/060946 2007-08-23 2008-08-21 Optical coupling body and method for production of the coupling body WO2009024598A1 (en)

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DE102016105878A1 (en) * 2016-03-31 2017-10-05 Connaught Electronics Ltd. Holding device for holding a camera on a motor vehicle component, arrangement and method for mounting a holding device
DE102022209527A1 (en) 2022-09-13 2024-03-14 Robert Bosch Gesellschaft mit beschränkter Haftung Lidar system

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