DE102009047765A1 - High frequency modulated lighting for photonic mixer device camera installed in motor vehicle, has opening formed in housing at region of light sources, and metal plating that controls electromagnetic emission - Google Patents
High frequency modulated lighting for photonic mixer device camera installed in motor vehicle, has opening formed in housing at region of light sources, and metal plating that controls electromagnetic emission Download PDFInfo
- Publication number
- DE102009047765A1 DE102009047765A1 DE102009047765A DE102009047765A DE102009047765A1 DE 102009047765 A1 DE102009047765 A1 DE 102009047765A1 DE 102009047765 A DE102009047765 A DE 102009047765A DE 102009047765 A DE102009047765 A DE 102009047765A DE 102009047765 A1 DE102009047765 A1 DE 102009047765A1
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- Germany
- Prior art keywords
- housing
- light sources
- region
- metallization
- carrier substrate
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/0083—Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/19—Attachment of light sources or lamp holders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V25/00—Safety devices structurally associated with lighting devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Die Erfindung betrifft eine Beleuchtung mit einem Gehäuse, dass im Bereich der Lichtquellen als Reflektor ausgebildet ist nach Gattung des unabhängigen Anspruchs.The invention relates to a lighting with a housing that is formed in the region of the light sources as a reflector according to the preamble of the independent claim.
Es ist bekannt, dass bestimmte Typen von Beleuchtungen beispielsweise hochfrequent modulierte Beleuchtungen bzw. Entladungslampen störende elektromagnetische Wellen erzeugen und beispielsweise elektronische Geräte eines Fahrzeuges negativ beeinflussen können. Derartige Störungen sind unerwünscht und es werden seither Anstrengungen unternommen die elektromagnetische Verträglichkeit derartiger Lichtquellen beispielsweise durch Abschirmungen zu verbessern.It is known that certain types of lighting, for example, high-frequency modulated lighting or discharge lamps generate disturbing electromagnetic waves and can adversely affect, for example, electronic devices of a vehicle. Such disturbances are undesirable and efforts have since been made to improve the electromagnetic compatibility of such light sources, for example by shielding.
So ist beispielsweise aus der
Die Erfindung stellt sich die Aufgabe, Reflektoren für modulierte Lichtquellen im Hinblick einer elektromagnetischen Verträglichkeit zu verbessern.The object of the invention is to improve reflectors for modulated light sources with regard to electromagnetic compatibility.
Die Aufgabe wird in vorteilhafter Weise durch die erfindungsgemäße Beleuchtung gemäß des unabhängigen Anspruchs gelöst.The object is achieved in an advantageous manner by the illumination according to the invention according to the independent claim.
Vorteilhaft ist eine Beleuchtung mit einem Gehäuse vorgesehen, bei dem auf einem Trägersubstrat Lichtquellen angeordnet sind. Das Gehäuse ist metallisiert und deckt das Trägersubstrat auf der Seite der Lichtquellen ab. Im Bereich der Lichtquellen weist das Gehäuse eine Öffnung aus und ist als Reflektor ausgebildet. Das Gehäuse und auch der Reflektor sind im Wesentlichen vollflächig metallisiert. Die Metallisierung ist hierbei vorzugsweise zur Unterdrückung elektromagnetischer Emissionen ausgebildet.Advantageously, a lighting is provided with a housing in which light sources are arranged on a carrier substrate. The housing is metallised and covers the carrier substrate on the side of the light sources. In the area of the light sources, the housing has an opening and is designed as a reflector. The housing and also the reflector are substantially metallized over the entire surface. The metallization is preferably designed to suppress electromagnetic emissions.
Dieses Vorgehen hat insbesondere den Vorteil, dass eine aufwendige Kontaktierung metallisierter Reflektoren mit einem Massepotential nicht notwendig sind, da die Metallisierung des Gehäuses und der Reflektoren als eine einheitliche Metallfläche ausgebildet ist.This approach has the particular advantage that a complex contacting metallized reflectors are not necessary with a ground potential, since the metallization of the housing and the reflectors is formed as a uniform metal surface.
Weiterhin ist es vorgesehen, dass die Öffnung im Bereich der Lichtquellen in ihrer längsten Ausdehnung maximal 10 mm aufweist. So wird vorteilhaft vermieden, dass elektromagnetische Strahlung mit einer größeren Wellenlänge von der Schaltung auf dem Trägersubstrat bzw. den Lichtquellen auf dem Trägersubstrat emittiert werden kann.Furthermore, it is provided that the opening in the region of the light sources in their longest extent has a maximum of 10 mm. Thus, it is advantageously avoided that electromagnetic radiation having a greater wavelength can be emitted from the circuit on the carrier substrate or the light sources on the carrier substrate.
In einer weiteren Ausgestaltung ist es vorteilhaft vorgesehen, dass die Metallisierung des Gehäuses über eine leitfähige Dichtung mit einer Kontaktfläche des Trägersubstrats elektrisch verbunden ist. Durch dieses Vorgehen wird vorteilhaft vermieden, dass beispielsweise über Schlitze zwischen dem Trägersubstrat und dem Gehäuse elektromagnetische Wellen ausdringen können.In a further embodiment, it is advantageously provided that the metallization of the housing is electrically connected via a conductive seal with a contact surface of the carrier substrate. By this procedure is advantageously avoided that, for example, via slots between the carrier substrate and the housing electromagnetic waves can escape.
Zweckmäßiger Weise liegt der elektrische Widerstand über die leitfähige Dichtung zwischen Metallisierung und Kontaktfläche unterhalb 5 Ω vorzugsweise kleiner 2 Ω und insbesondere kleiner 1 Ω, so dass die elektrische Verbindung bzw. die Abschirmung über die leitfähige Dichtung besonders effektiv ausgestaltet werden kann.Expediently, the electrical resistance across the conductive seal between the metallization and the contact surface is less than 5 Ω, preferably less than 2 Ω and in particular less than 1 Ω, so that the electrical connection or the shielding can be made particularly effective via the conductive seal.
Zweckmäßiger Weise ist die Metallisierung dergestalt dass im Bereich der Reflektoren die Reflektivität größer 70% vorzugsweise größer 90% ist, um eine möglichst hohe Lichtausbeute zu erreichen.Suitably, the metallization is such that in the region of the reflectors, the reflectivity is greater than 70%, preferably greater than 90%, in order to achieve the highest possible light output.
In einer weiteren vorteilhaften Ausgestaltung, ist es auch vorgesehen, das Trägersubstrat auf der den Lichtquellen gegenüberliegenden Unterseite vorzugsweise vollflächige zu metallisieren, und zudem die Metallisierung elektrisch mit den Kontaktflächen zu verbinden. Diese Ausgestaltung hat insbesondere den Vorteil, dass die modulierten elektrischen Baugruppen auf dem Trägersubstrat vollständig innerhalb eines metallisierten Bereiches zu liegen kommen.In a further advantageous embodiment, it is also provided to metallize the carrier substrate on the bottom opposite the light sources preferably full-surface, and also to connect the metallization electrically connected to the contact surfaces. This embodiment has the particular advantage that the modulated electrical components on the carrier substrate come to lie completely within a metallized region.
Nachfolgend wird die Erfindung anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnungen näher erläutert. Es zeigen:The invention will be explained in more detail by means of embodiments with reference to the drawings. Show it:
Im Querschnitt ist die parabolische Form der Reflektoren
In der hier dargestellten Ausführungsform ist zumindest in Richtung des abgestrahlten Lichts eine Reduzierung der störenden elektromagnetischen Strahlung möglich.In the embodiment shown here, a reduction of the interfering electromagnetic radiation is possible at least in the direction of the emitted light.
Mit der vorgeschlagenen Lösung ist der sonst üblichen Montageaufwendungen deutlich reduziert, da Reflektoren und EMV-Abschirmung als gemeinsames Element gefertigt werden können. Auch der konstruktive Aufwand ist geringer, da Reflektor und EMV-Abschirmung nicht separat hergestellt und montiert werden müssen.With the proposed solution of the usual installation costs is significantly reduced because reflectors and EMC shielding can be manufactured as a common element. The design effort is lower because reflector and EMC shielding need not be manufactured and assembled separately.
Die Lichtquellen
Dieser Frequenzbereich kann insbesondere dadurch eingehalten werden, dass die Austrittsöffnungen
Das Zusammenfügen des Trägersubstrats und des Gehäuses kann insbesondere durch Klemmverbindung oder gegebenenfalls auch Schraubverbindungen erfolgen. Durch diese Art des Vorgehens können insbesondere aufwendige Lötverbindungen vermieden werden.The joining of the carrier substrate and the housing can be done in particular by clamping connection or possibly also screw. By this type of procedure in particular costly solder joints can be avoided.
Vorteilhaft wird der Flächenwiderstand der Metallisierung des Kunststoffes unterhalb 200 Ω eingestellt. Zudem lassen sich elektromagnetische Emissionen über den Spalt zwischen Gehäuse und Trägersubstrat effektiv verhindern, wenn der Kontaktwiderstand über die leitfähige Dichtung kleiner 5 Ω bzw. kleiner 2 Ω oder noch besser kleiner 1 Ω ist. Die Metallisierung ist vorzugsweise so ausgestaltet, dass die störstrahlungemittierenden Bauteile effektiv umschlossen bzw. abgeschirmt sind.Advantageously, the sheet resistance of the metallization of the plastic is set below 200 Ω. In addition, electromagnetic emissions across the gap between housing and carrier substrate can be effectively prevented if the contact resistance across the conductive seal is less than 5Ω, or less than 2Ω, or more preferably, less than 1Ω. The metallization is preferably designed such that the interference-radiation-emitting components are effectively enclosed or shielded.
Die Beleuchtung ist vorzugsweise als Beleuchtung für eine 3D-TOF-Kamera beispielsweise PMD-Kamera ausgestaltet, wobei die Leuchtdioden typischerweise mit einer Frequenz zwischen 500 kHz und 100 MHz moduliert werden.The illumination is preferably configured as illumination for a 3D TOF camera, for example a PMD camera, wherein the light-emitting diodes are typically modulated with a frequency between 500 kHz and 100 MHz.
Selbstverständlich kann die dargestellte Ausführungsform auch für Beleuchtung mit einer Lichtquelle und einem Reflektor sowie auch mehreren Lichtquellen und Reflektoren ausgebildet sein.Of course, the illustrated embodiment may also be designed for illumination with a light source and a reflector as well as a plurality of light sources and reflectors.
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102006010660 A1 [0003] DE 102006010660 A1 [0003]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009047765A DE102009047765A1 (en) | 2009-12-10 | 2009-12-10 | High frequency modulated lighting for photonic mixer device camera installed in motor vehicle, has opening formed in housing at region of light sources, and metal plating that controls electromagnetic emission |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009047765A DE102009047765A1 (en) | 2009-12-10 | 2009-12-10 | High frequency modulated lighting for photonic mixer device camera installed in motor vehicle, has opening formed in housing at region of light sources, and metal plating that controls electromagnetic emission |
Publications (1)
Publication Number | Publication Date |
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DE102009047765A1 true DE102009047765A1 (en) | 2011-06-16 |
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DE102009047765A Ceased DE102009047765A1 (en) | 2009-12-10 | 2009-12-10 | High frequency modulated lighting for photonic mixer device camera installed in motor vehicle, has opening formed in housing at region of light sources, and metal plating that controls electromagnetic emission |
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DE (1) | DE102009047765A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3037730A1 (en) * | 2015-06-22 | 2016-12-23 | Valeo Vision | LUMINOUS DEVICE OF A MOTOR VEHICLE WITH LIMITED ELECTROMAGNETIC RADIATION |
EP3205927A1 (en) * | 2016-02-15 | 2017-08-16 | Valeo Vision Belgique | Housing of a light device of a motor vehicle |
DE102017115593A1 (en) * | 2017-07-12 | 2019-01-17 | HELLA GmbH & Co. KGaA | Lighting device for vehicles |
FR3105350A1 (en) * | 2019-12-18 | 2021-06-25 | Valeo Vision | Light module for motor vehicle. |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10116253A1 (en) * | 2001-03-31 | 2002-10-17 | Hella Kg Hueck & Co | Headlights for vehicles |
DE69817490T2 (en) * | 1997-09-26 | 2004-06-17 | Valeo Vision | Motor vehicle headlights with a discharge lamp and an improved, electromagnetic shield |
DE102006010660A1 (en) | 2006-03-08 | 2007-09-13 | Automotive Lighting Reutlingen Gmbh | Motor vehicle head light, has reflector consisting of high temperature resistant plastics such as thermosetting plastics, where surface of reflector attached to light source is painted and metallized |
DE102007037822A1 (en) * | 2007-08-10 | 2009-02-12 | Osram Gesellschaft mit beschränkter Haftung | lighting device |
-
2009
- 2009-12-10 DE DE102009047765A patent/DE102009047765A1/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69817490T2 (en) * | 1997-09-26 | 2004-06-17 | Valeo Vision | Motor vehicle headlights with a discharge lamp and an improved, electromagnetic shield |
DE10116253A1 (en) * | 2001-03-31 | 2002-10-17 | Hella Kg Hueck & Co | Headlights for vehicles |
DE102006010660A1 (en) | 2006-03-08 | 2007-09-13 | Automotive Lighting Reutlingen Gmbh | Motor vehicle head light, has reflector consisting of high temperature resistant plastics such as thermosetting plastics, where surface of reflector attached to light source is painted and metallized |
DE102007037822A1 (en) * | 2007-08-10 | 2009-02-12 | Osram Gesellschaft mit beschränkter Haftung | lighting device |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3037730A1 (en) * | 2015-06-22 | 2016-12-23 | Valeo Vision | LUMINOUS DEVICE OF A MOTOR VEHICLE WITH LIMITED ELECTROMAGNETIC RADIATION |
EP3109538A1 (en) * | 2015-06-22 | 2016-12-28 | Valeo Vision | Light device of a motor vehicle with limited electromagnetic radiation |
EP3205927A1 (en) * | 2016-02-15 | 2017-08-16 | Valeo Vision Belgique | Housing of a light device of a motor vehicle |
FR3047796A1 (en) * | 2016-02-15 | 2017-08-18 | Valeo Vision Belgique | LUMINOUS DEVICE HOUSING OF A MOTOR VEHICLE |
CN107084352A (en) * | 2016-02-15 | 2017-08-22 | 法雷奥照明比利时公司 | Vehicle light shell |
CN107084352B (en) * | 2016-02-15 | 2022-03-18 | 法雷奥照明比利时公司 | Motor vehicle lighting device housing |
DE102017115593A1 (en) * | 2017-07-12 | 2019-01-17 | HELLA GmbH & Co. KGaA | Lighting device for vehicles |
FR3105350A1 (en) * | 2019-12-18 | 2021-06-25 | Valeo Vision | Light module for motor vehicle. |
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Owner name: PMDTECHNOLOGIES AG, DE Free format text: FORMER OWNER: IFM ELECTRONIC GMBH, 45128 ESSEN, DE |
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