AT8252U1 - INFRARED PROJECTION MODULE - Google Patents
INFRARED PROJECTION MODULE Download PDFInfo
- Publication number
- AT8252U1 AT8252U1 AT0017705U AT1772005U AT8252U1 AT 8252 U1 AT8252 U1 AT 8252U1 AT 0017705 U AT0017705 U AT 0017705U AT 1772005 U AT1772005 U AT 1772005U AT 8252 U1 AT8252 U1 AT 8252U1
- Authority
- AT
- Austria
- Prior art keywords
- light
- projection module
- sbl
- reflector
- lle
- Prior art date
Links
Classifications
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- 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
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/04—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out infrared radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
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- 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
- F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
- F21S41/13—Ultraviolet light; Infrared light
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- 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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/24—Light guides
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- 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
- F21S41/36—Combinations of two or more separate reflectors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mechanical Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Die Erfindung betrifft ein Projektionsmodul für einen Fahrzeugscheinwerfer, wobei das Projektionsmodul (MOD) eine Lichtquelle (LIQ) zur Erzeugung von Licht (LIC) aufweist, welches über einen Reflektor (REF) durch eine Linse (LIN) in einen vor einem Fahrzeug liegenden Bereich abgestrahlt wird, und wobei ein Filter vorgesehen ist, welcher für einen infraroten Lichtanteil (IRL) des Lichtes durchlässig ist, sodass das Infrarotlicht (IRL) durch die Linse (LIN) aus dem Projektionsmodul (MOD) austreten kann. Der Filter ist als Reflexionsfilter (FIL) ausgebildet, welcher einen sichtbaren Lichtanteil (SBL) des Lichtes (LIC) reflektiert und in einem Brennpunkt (SBF) bündelt, und wobei ein Lichtleiter (LLE) vorgesehen ist, in welchen das sichtbare Licht (SBL) eingespeist wird.The invention relates to a projection module for a vehicle headlight, wherein the projection module (MOD) has a light source (LIQ) for generating light (LIC), which is emitted via a reflector (REF) through a lens (LIN) into a region located in front of a vehicle is provided, and wherein a filter is provided, which is transparent to an infrared light component (IRL) of the light, so that the infrared light (IRL) through the lens (LIN) from the projection module (MOD) can emerge. The filter is designed as a reflection filter (FIL), which reflects a visible light component (SBL) of the light (LIC) and focuses it in a focal point (SBF), and wherein an optical fiber (LLE) is provided, into which the visible light (SBL) is fed.
Description
2 AT 008 252 U12 AT 008 252 U1
Die Erfindung betrifft ein Projektionsmodul für einen Fahrzeugscheinwerfer, wobei das Projektionsmodul eine Lichtquelle zur Erzeugung von Licht aufweist, welches über einen Reflektor durch eine Linse in einen vor einem Fahrzeug liegenden Bereich abgestrahlt wird, und wobei ein Filter vorgesehen ist, welcher für einen infraroten Lichtanteil des Lichtes durchlässig ist, 5 sodass der infrarote Lichtanteil durch die Linse aus dem Projektionsmodul austreten kann.The invention relates to a projection module for a vehicle headlight, wherein the projection module has a light source for generating light, which is radiated via a reflector through a lens in an area lying in front of a vehicle, and wherein a filter is provided, which for an infrared light component of Light is permeable, 5 so that the infrared light component can escape through the lens from the projection module.
Ein solches Projektionsmodul eignet sich zur Verwendung in Verbindung mit Nachtsichtvorrichtungen. Dabei wird das mit dem Infrarotlicht erzeugte Infrarotbild mit einer Detektiervorrichtung, beispielsweise einer CCD-Kamera aufgenommen bzw. weiterverarbeitet werden, um es mit io einer in dem Fahrzeuginnenraum angeordneten Anzeigeeinrichtung sichtbar zu machen.Such a projection module is suitable for use in conjunction with night vision devices. In this case, the infrared image generated by the infrared light is recorded or further processed with a detection device, for example a CCD camera, in order to make it visible with the display device arranged in the vehicle interior.
Der Filter lässt dabei Infrarotlicht austreten, während der restliche Lichtanteil üblicherweise absorbiert und thermisch vernichtet wird. 15 Aufgabe der Erfindung ist es, ein eingangs erwähntes Projektionsmodul dahingehend zu verbessern, dass eine bessere Ausnutzung des von der Lichtquelle stammenden Lichtes erzielt wird.The filter can thereby emit infrared light, while the remaining light component is usually absorbed and thermally destroyed. The object of the invention is to improve a projection module mentioned at the outset in such a way that a better utilization of the light originating from the light source is achieved.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Filter als Reflexionsfilter ausge-20 bildet ist, welcher einen sichtbaren Lichtanteil des Lichtes reflektiert und in einem Brennpunkt bündelt, und wobei ein Lichtleiter vorgesehen ist, in welchen das sichtbare Licht eingespeist wird.This object is achieved in that the filter is formed as a reflection filter 20, which reflects a visible light component of the light and focuses in a focal point, and wherein a light guide is provided, in which the visible light is fed.
Auf diese Weise muss der sichtbare Lichtanteil nicht vernichtet werden sondern kann für eine 25 weitere Lichtfunktion verwendet werden. Beispielsweise kann das in den Lichtleiter eingespeiste sichtbare Licht für die Erzeugung eines Tagfahrlichtes (oder eines Begrenzungslichtes, Nebellichtes, usw.) verwendet werden, indem der Lichtleiter beispielsweise in einem Leuchtring endet, in welchen das sichtbare Licht eingespeist wird. 30 Der Reflexionsfilter ist beispielsweise ein wellenlängenselektiver Spiegel, der für sichtbares Licht reflektierend und für Infrarot-Licht durchsichtig ist.In this way, the visible light must not be destroyed but can be used for a further 25 light function. For example, the visible light fed into the optical fiber can be used for the generation of a daytime running light (or a limiting light, fog light, etc.), for example by terminating the optical fiber in a light ring into which the visible light is fed. For example, the reflection filter is a wavelength-selective mirror that is reflective to visible light and transparent to infrared light.
Lichtleiter aus Glas sind vergleichsweise teuer. Deswegen werden häufig Lichtleiter aus Kunststoff verwendet, welche allerdings thermisch sehr empfindlich sind. Mit der vorliegenden Erfin-35 düng wird die thermische Belastung der Lichtleiter automatisch stark reduziert, da kein Infrarot-Anteil in die Lichtleiter eingespeist wird.Glass optical fibers are comparatively expensive. Because of this, optical fibers made of plastic are frequently used, which are, however, very thermally sensitive. With the present invention, the thermal load of the optical fibers is automatically greatly reduced, since no infrared component is fed into the optical fibers.
Ein besonders kompakter Aufbau des Projektionsmoduls ergibt sich, wenn der Reflexionsfilter im Strahlengang zwischen der Lichtquelle und der Linse angeordnet ist. 40A particularly compact design of the projection module results when the reflection filter is arranged in the beam path between the light source and the lens. 40
Grundsätzlich kann sich der Lichtleiter an einer relativ beliebigen Stelle befinden. Von Vorteil ist es allerdings, wenn der Lichtleiter mit seiner Lichteintrittsöffnung in einer dafür im Reflektor vorgesehenen Öffnung angeordnet ist. 45 Bei dieser Variante sind keine separaten Befestigungen im Scheinwerfer für den Lichtleiter notwendig. Vielmehr kann die Befestigung direkt am Reflektor an der Außenseite erfolgen und entsprechende Befestigungsmittel können beispielsweise gleich einstückig mit dem Reflektor ausgebildet werden und z.B. bei einem Thermoplastreflektor gleich direkt mit dem Reflektor mitgespritzt werden. 50In principle, the light guide can be located at a relatively arbitrary position. It is advantageous, however, if the light guide is arranged with its light inlet opening in an opening provided in the reflector. 45 In this variant, no separate fixings are required in the floodlight for the light guide. Rather, the attachment can be made directly on the reflector on the outside and corresponding fastening means can for example be formed integrally with the reflector, and e.g. be injected directly with the reflector in a thermoplastic reflector directly. 50
Um weiters eine optimale Einspeisung des sichtbaren Lichtes zu erreichen und die Lichteintrittsöffnung des Lichtleiters möglichst klein halten zu können, ist es noch günstig, wenn die Öffnung im Bereich des Brennpunktes des Reflexionsfilters für den sichtbaren Lichtanteil angeordnet ist. 55In order to further achieve an optimal feed of the visible light and to keep the light entrance opening of the light guide as small as possible, it is still advantageous if the opening is arranged in the region of the focal point of the reflection filter for the visible light component. 55
Claims (3)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0017705U AT8252U1 (en) | 2005-03-21 | 2005-03-21 | INFRARED PROJECTION MODULE |
DE202006003508U DE202006003508U1 (en) | 2005-03-21 | 2006-03-07 | Projection module for vehicle headlight has filter designed as reflection filter, which reflects visible light segment of light and bundles in focus wherein light conductor is provided, in which visible light is supplied |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0017705U AT8252U1 (en) | 2005-03-21 | 2005-03-21 | INFRARED PROJECTION MODULE |
Publications (1)
Publication Number | Publication Date |
---|---|
AT8252U1 true AT8252U1 (en) | 2006-04-15 |
Family
ID=35696110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT0017705U AT8252U1 (en) | 2005-03-21 | 2005-03-21 | INFRARED PROJECTION MODULE |
Country Status (2)
Country | Link |
---|---|
AT (1) | AT8252U1 (en) |
DE (1) | DE202006003508U1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2770247A3 (en) * | 2013-02-23 | 2015-08-05 | Automotive Lighting Reutlingen GmbH | Motor vehicle light with an homogeneously bright appearance |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006054937A1 (en) * | 2006-11-22 | 2008-05-29 | Hella Kgaa Hueck & Co. | Vehicle headlight, has laminar light conduction element arranged within light radiation region of generation unit, which has light coupling region with light source at narrow side, where surface section of element has decoupling elements |
DE102010054239B4 (en) | 2010-12-11 | 2020-01-02 | Automotive Lighting Reutlingen Gmbh | Infrared headlights with hidden infrared radiation source |
US11396986B2 (en) | 2019-05-23 | 2022-07-26 | Valeo North America, Inc. | Apparatus and method for masking residual visible light from an infrared emission source |
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2005
- 2005-03-21 AT AT0017705U patent/AT8252U1/en not_active IP Right Cessation
-
2006
- 2006-03-07 DE DE202006003508U patent/DE202006003508U1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2770247A3 (en) * | 2013-02-23 | 2015-08-05 | Automotive Lighting Reutlingen GmbH | Motor vehicle light with an homogeneously bright appearance |
Also Published As
Publication number | Publication date |
---|---|
DE202006003508U1 (en) | 2006-05-04 |
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