DE10301829A1 - Headlamp for motor vehicles transmits light in a near-infrared range with a source of light radiating in a visible range except in the infrared range with a filter transparent in the infrared range - Google Patents
Headlamp for motor vehicles transmits light in a near-infrared range with a source of light radiating in a visible range except in the infrared range with a filter transparent in the infrared range Download PDFInfo
- Publication number
- DE10301829A1 DE10301829A1 DE10301829A DE10301829A DE10301829A1 DE 10301829 A1 DE10301829 A1 DE 10301829A1 DE 10301829 A DE10301829 A DE 10301829A DE 10301829 A DE10301829 A DE 10301829A DE 10301829 A1 DE10301829 A1 DE 10301829A1
- Authority
- DE
- Germany
- Prior art keywords
- filter
- range
- infrared range
- headlight
- headlight according
- 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.)
- Granted
Links
- 230000003595 spectral effect Effects 0.000 claims abstract description 16
- 230000007704 transition Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000002238 attenuated effect Effects 0.000 claims 1
- 229910052736 halogen Inorganic materials 0.000 abstract description 3
- 150000002367 halogens Chemical class 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 description 8
- 230000035945 sensitivity Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- F21S41/162—Incandescent light sources, e.g. filament or halogen lamps
-
- 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
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
-
- 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
- F21V9/20—Dichroic filters, i.e. devices operating on the principle of wave interference to pass specific ranges of wavelengths while cancelling others
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)
Abstract
Description
Stand der TechnikState of technology
Die Erfindung betrifft einen Scheinwerfer für Fahrzeuge, der Licht im nahen Infrarotbereich aussendet und eine Lichtquelle, die außer im Infrarotbereich auch im sichtbaren Bereich strahlt, und ein im Infrarotbereich durchlässiges Filter aufweist.The invention relates to a headlight for vehicles, the light emits in the near infrared range and a light source, the except in the infrared range also radiates in the visible range, and one in the infrared range permeable Has filter.
Aus
Es ist deshalb bei den bekannten Scheinwerfern zur Beleuchtung im nahen Infrarotbereich eine Filterung vorgesehen, welche die Aussendung von sichtbarem Licht unterbindet. Wegen einer möglichen Verwechslung mit Rücklichtern ist ein roter Eindruck von Scheinwerfern an der Frontseite des Fahrzeugs zu vermeiden, was auch in einschlägigen gesetzlichen Bestimmungen geregelt ist.It is therefore in the known Filtering for headlights for lighting in the near infrared range provided, which prevents the emission of visible light. Because of a possible confusion with taillights is a red impression of headlights on the front of the vehicle too avoid what is also in relevant legal provisions is regulated.
Aufgabe der vorliegenden Erfindung ist es, einen Scheinwerfer zur Ausstrahlung von Strahlung im nahen Infrarotbereich vorzuschlagen, der die spektrale Empfindlichkeit von Bildsensoren möglichst gut ausnutzt und dabei keinen roten Farbeindruck hervorruft.Object of the present invention is a spotlight to emit radiation in the near Propose infrared range that the spectral sensitivity from image sensors as well as possible exploited and does not produce a red color impression.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, dass ein Übergangsbereich des Filters vom Infrarotbereich in den roten Spektralbereich des sichtbaren Bereichs hineinreicht und dass weitere Spektralanteile des sichtbaren Bereichs gedämpft ausgesendet werden.The object is achieved in that a transition area of the filter from the infrared to the red spectral range of the visible Range extends and that further spectral components of the visible Range is transmitted in a subdued manner become.
Der erfindungsgemäße Scheinwerfer hat den Vorteil, dass die Intensität der Infrarotstrahlung in dem jeweiligen Spektralbereich, in welchem der Bildsensor noch relativ hoch empfindlich ist, von dem Filter weitgehend ungedämpft ist und dass trotzdem kein roter Farbeindruck der Scheinwerfer entsteht. Dabei können Filter verwendet werden, welche keine extrem steilen Kanten aufweisen und entsprechend teuer sind. Vorzugsweise eignen sich Interferenzfilter.The headlight according to the invention has the advantage that the intensity the infrared radiation in the respective spectral range in which the image sensor is still relatively highly sensitive to the filter largely undamped and that there is still no red color impression of the headlights. there can Filters are used which have no extremely steep edges and are accordingly expensive. Interference filters are preferably suitable.
Die Ausführungen der Erfindung im Einzelnen sowie deren Weiterbildungen hängen unter anderem davon ab, in welchem Umfang das Filter sichtbares Licht im roten Spektralbereich durchlässt und welche Anforderungen an die Farbe und Strahlungsleistung des insgesamt durchgelassenen sichtbaren Lichts gestellt werden.The details of the invention as well as their further education depend among other things, to what extent the filter is visible Allows light in the red spectral range and what requirements the color and radiant power of the total let through visible light.
Das Filter kann derart ausgestaltet sein, dass der Rotanteil durch andere Farbanteile ausgeglichen wird. Dazu ist bei einer Weiterbildung des erfindungsgemäßen Scheinwerfers vorgesehen, dass das Filter die Charakteristik einer Bandsperre aufweist, wobei der kurzwellige Durchlassbereich in den kurzwelligen Bereich des sichtbaren Lichts (violett/blau) hineinreicht. Diese Weiterbildung kann derart ausgestaltet sein, dass das Filter zusätzlich im Grünbereich durchlässig ist.The filter can be designed in this way be that the red component is balanced by other color components. This is in a further development of the headlight according to the invention provided that the filter has the characteristics of a bandstop has, the short-wave pass band in the short-wave region visible light (violet / blue). This training can be designed in such a way that the filter in addition Green area is permeable.
Zur Kompensation des Rotanteils mit dem Resultat eines weißen Farbeindrucks ist bei einer anderen Weiterbildung vorgesehen, dass die weiteren Spektralanteile oder das Filter zyanfarben sind.To compensate for the red component with the result of a white In another development, the color impression is provided for the other spectral components or the filter are cyan.
Eine andere vorteilhafte Ausgestaltung der Erfindung besteht darin, dass die weiteren Spektralanteile durch Umgehung des Filters ausgesendet werden. Dabei ist vorzugsweise vorgesehen, dass das Filter nicht die gesamte Fläche des optischen Strahlenganges abdeckt.Another advantageous embodiment the invention is that the further spectral components by Bypassing the filter. It is preferred provided that the filter does not cover the entire area of the optical beam path covers.
Zur Ausleuchtung eines Fernlichtbereichs mit Hilfe Infrarotstrahlung eignen sich insbesondere sogenannte Projektions-Scheinwerfer, bei denen ähnlich einem Projektor ein Parabolspiegel und eine Linse als Objektiv vorgesehen sind. Bei einer durch JP-2000348513 A bekannt gewordenen Ausbildung eines derartigen Scheinwerfers ist das Filter zwischen dem Parabolspiegel und der Linse vorgesehen. Dort werden jedoch wegen des großen Öffnungswinkels des Strahlenganges verschiedene Durchtrittswinkel auftreten, was eine Verschiebung der Filterkennlinie in den Randbereichen des Strahlenganges gegenüber der Mitte verursacht.For illuminating a high beam area with Infrared radiation is particularly suitable for so-called projection headlights, similar to those a projector a parabolic mirror and a lens provided as an objective are. In the case of a training of a known from JP-2000348513 A. Such a headlamp is the filter between the parabolic mirror and the lens. There, however, because of the large opening angle different beam angles occur in the beam path, what a shift of the filter characteristic in the edge areas of the beam path across from the middle caused.
Um diesen Nachteil zu vermeiden, ist bei einer anderen Weiterbildung des erfindungsgemäßen Scheinwerfers vorgesehen, dass das Filter vor dem Scheinwerfer angeordnet ist. An dieser Stelle sind die Rand- und Mittelstrahlen des gesamten Strahlenbündels nahezu parallel.To avoid this disadvantage, is in another development of the headlamp according to the invention provided that the filter is arranged in front of the headlight. At this point, the marginal and central rays of the whole beam almost parallel.
Je nach Voraussetzungen im Eizelnen kann der erfindungsgemäße Scheinwerfer auch derart ausgebildet sein, dass das Filter auf einer Grenzfläche der Linse angeordnet ist oder auf dem Spiegel oder auf dem Außenglas des Scheinwerfers aufgebracht ist.Depending on the requirements in the egg can the headlight according to the invention also be designed such that the filter on an interface of the Lens is arranged or on the mirror or on the outer glass the headlight is applied.
Ausführungsbeispiele der Erfindung sind in der Zeichnung anhand mehrerer Figuren dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigt:Embodiments of the invention are shown in the drawing using several figures and in the description below explained. It shows:
Beschreibung der Ausführungsbeispieledescription of the embodiments
Die
Die Qualität des auf einem Bildschirm
dargestellten Signals wird unter anderem von der Intensität der Glühlampe,
der Empfindlichkeit des Bildsensors und der Transmission des Filters
bestimmt. Aufgrund des Maximums der Empfindlichkeit des Bildsensors bei
sichtbarer Strahlung soll vom IR-Scheinwerfer ein möglichst
nahe am sichtbaren Bereich liegender Infrarotbereich ausgesendet
werden. Dies ist jedoch dadurch begrenzt, dass rot erscheinende
Lichter an der Fahrzeugfront gesetzlich verboten sind. Außerdem sind
Filter mit einer sehr steilen Kante
Das Filter, dessen Kennlinie
Bei dem Filter, dessen Kennlinie
in
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10301829A DE10301829B4 (en) | 2003-01-20 | 2003-01-20 | Headlights for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10301829A DE10301829B4 (en) | 2003-01-20 | 2003-01-20 | Headlights for vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE10301829A1 true DE10301829A1 (en) | 2004-08-05 |
| DE10301829B4 DE10301829B4 (en) | 2010-10-28 |
Family
ID=32667655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE10301829A Expired - Lifetime DE10301829B4 (en) | 2003-01-20 | 2003-01-20 | Headlights for vehicles |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE10301829B4 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010054239A1 (en) * | 2010-12-11 | 2012-06-14 | Automotive Lighting Reutlingen Gmbh | Infrared headlight for night vision systems of motor vehicle i.e. motor car, has cover exhibiting high transmission degree for infrared radiation compared to that of visible light for reducing incidence of visible light on radiation source |
| DE102007021865B4 (en) * | 2007-05-10 | 2012-10-31 | Automotive Lighting Reutlingen Gmbh | Lighting device for a vehicle |
| EP3572718A1 (en) * | 2018-05-22 | 2019-11-27 | Phoenix Electric Co., Ltd. | Infrared lamp |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2007032A1 (en) * | 1970-02-17 | 1971-08-26 | Optric Glarus Ag | Active and passive method for sending and receiving glare-free light rays and invisible rays of adjacent wavelengths and arrangements for carrying out the same |
| DE4032927A1 (en) * | 1990-10-17 | 1992-04-30 | Bosch Gmbh Robert | DEVICE FOR IMPROVING VISIBILITY IN A MOTOR VEHICLE |
| JPH0789448B2 (en) * | 1991-03-19 | 1995-09-27 | 株式会社小糸製作所 | Projection headlamps for automobiles |
| FR2774743B1 (en) * | 1998-02-12 | 2000-05-05 | Valeo Vision | RADIATION DEVICE FOR A NIGHT VISION AID SYSTEM FOR VEHICLE |
| JP2000348513A (en) * | 1999-05-31 | 2000-12-15 | Stanley Electric Co Ltd | Automotive lighting |
| DE10047207A1 (en) * | 2000-09-23 | 2002-04-11 | Hella Kg Hueck & Co | Headlights for vehicles |
| JP3920052B2 (en) * | 2001-07-06 | 2007-05-30 | 株式会社小糸製作所 | Infrared irradiation lamp for automobiles |
| DE10301830A1 (en) * | 2003-01-20 | 2004-07-29 | Robert Bosch Gmbh | Head light unit for road vehicles, has a filter in front of lens to block any red light component |
-
2003
- 2003-01-20 DE DE10301829A patent/DE10301829B4/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007021865B4 (en) * | 2007-05-10 | 2012-10-31 | Automotive Lighting Reutlingen Gmbh | Lighting device for a vehicle |
| DE102010054239A1 (en) * | 2010-12-11 | 2012-06-14 | Automotive Lighting Reutlingen Gmbh | Infrared headlight for night vision systems of motor vehicle i.e. motor car, has cover exhibiting high transmission degree for infrared radiation compared to that of visible light for reducing incidence of visible light on radiation source |
| DE102010054239B4 (en) | 2010-12-11 | 2020-01-02 | Automotive Lighting Reutlingen Gmbh | Infrared headlights with hidden infrared radiation source |
| EP3572718A1 (en) * | 2018-05-22 | 2019-11-27 | Phoenix Electric Co., Ltd. | Infrared lamp |
| US10983259B2 (en) | 2018-05-22 | 2021-04-20 | Phoenix Electric Co., Ltd. | Infrared lamp having cut filter cut-on wavelength between starting stage peak wavelength and steady state peak wavelength |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10301829B4 (en) | 2010-10-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8364 | No opposition during term of opposition | ||
| R071 | Expiry of right |