DE19630935A1 - Motor vehicle headlights - Google Patents

Motor vehicle headlights

Info

Publication number
DE19630935A1
DE19630935A1 DE19630935A DE19630935A DE19630935A1 DE 19630935 A1 DE19630935 A1 DE 19630935A1 DE 19630935 A DE19630935 A DE 19630935A DE 19630935 A DE19630935 A DE 19630935A DE 19630935 A1 DE19630935 A1 DE 19630935A1
Authority
DE
Germany
Prior art keywords
lamp
motor vehicle
light
dichroic filter
radiation
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.)
Withdrawn
Application number
DE19630935A
Other languages
German (de)
Inventor
Duk-Sung Park
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung SDI Co Ltd
Original Assignee
Samsung Display Devices Co Ltd
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
Publication date
Application filed by Samsung Display Devices Co Ltd filed Critical Samsung Display Devices Co Ltd
Publication of DE19630935A1 publication Critical patent/DE19630935A1/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/10—Protection of 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
    • 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
    • F21V9/06—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out ultraviolet radiation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/26—Reflecting filters

Description

Die vorliegende Erfindung bezieht sich auf einen Kraft­ fahrzeug-Scheinwerfer und insbesondere auf einen Kraft fahr­ zeug-Scheinwerfer, der einen verbesserten Lichtabgabewir­ kungsgrad hat und Schutz für seine Linse liefert.The present invention relates to a force vehicle headlights and in particular on a motor vehicle headlamp, which has an improved light output degree of protection and provides protection for its lens.

Ein herkömmlicher Kraftfahrzeug-Scheinwerfer, wie er in Fig. 1 gezeigt ist, ist aus US 5 237 489 bekannt. Gemäß Fig. 1 weist ein Scheinwerfer eine Lampe 11 als Lichtquelle, einen Reflexionsspiegel 12 zur Vorwärtsreflexion des von der Lampe 11 abgegebenen Lichts, eine vor der Lampe 11 angeord­ nete Blende 13 und eine am Lichtabgabeende des Scheinwerfers angebrachte Projektionslinse 14 auf.A conventional motor vehicle headlight, as shown in Fig. 1, is known from US 5 237 489. Referring to FIG. 1, a spotlight to a lamp 11 as a light source, a reflecting mirror 12 for forward reflection of light emitted from the lamp 11 light, a front of the lamp 11 angeord numeral aperture 13 and an attached to the light output end of the headlight projection lens 14.

Neben sichtbarer Strahlung gibt die Lampe 11 auch In­ frarotstrahlung mit Wärmestrahlung sowie Ultraviolettstrah­ lung ab. Die Infrarotwärmestrahlung verformt die Projek­ tionslinse, während die kurzwelligere Ultraviolettstrahlung schädliche Auswirkungen auf den menschlichen Körper oder andere Lebewesen haben kann.In addition to visible radiation, the lamp 11 also emits infrared radiation with heat radiation and ultraviolet radiation. Infrared heat radiation deforms the projection lens, while the short-wave ultraviolet radiation can have harmful effects on the human body or other living things.

Ferner stört die direkte Lichtstrahlung, die in Vor­ wärtsrichtung aus dem Scheinwerfer eines fahrenden Wagens abgegeben wird, die Sicht entgegenkommender Fahrer. Daher verwendet der herkömmliche Scheinwerfer die Blende 13 oder eine Projektionslinse 14, die geschwärzt ist, um die Direkt­ emission von Licht zu vermindern. Damit wird jedoch unver­ meidbar die vom Scheinwerfer abgegebene Lichtmenge verrin­ gert.Furthermore, the direct light radiation emitted in the forward direction from the headlight of a moving car disturbs the view of oncoming drivers. Therefore, the conventional headlamp uses the diaphragm 13 or a projection lens 14 , which is blackened to reduce the direct emission of light. However, this inevitably reduces the amount of light emitted by the headlight.

Es ist daher Aufgabe der Erfindung, einen Scheinwerfer zu schaffen, der einen verbesserten Lichtabgabewirkungsgrad hat und dabei Schutz für seine Linse liefert, wobei Infra­ rot- und Ultraviolettstrahlung abgefangen wird.It is therefore an object of the invention to provide a headlamp to create an improved light output efficiency has protection for his lens, while Infra red and ultraviolet radiation is intercepted.

Zur Lösung dieser Aufgabe sieht die Erfindung einen Kraftfahrzeugscheinwerfer mit einer Lampe, einem um die Lampe herum angeordneten Reflexionsspiegel zum Reflektieren von von der Lampe abgegebenem Licht, einem vor der Lampe angeordneten dichroitischen Filter zum Abfangen von Infra­ rotstrahlung und Ultraviolettstrahlung aus dem Licht und einer Projektionslinse zum Projizieren des vom dichroiti­ schen Filter durchgelassenen Lichts nach vorne vor.The invention provides a solution to this problem Motor vehicle headlights with a lamp, one around the Reflection mirror arranged around the lamp for reflection of light emitted by the lamp, one in front of the lamp arranged dichroic filter for trapping infra red radiation and ultraviolet radiation from the light and a projection lens to project the dichroiti filter passed light forward.

Ferner ist bevorzugt ein mattbehandelter Abschnitt in der Mitte des dichroitischen Filters vorgesehen.A matt-treated section is also preferred in the center of the dichroic filter.

Im folgenden wird eine Ausführungsform der Erfindung anhand der beigefügten Zeichnungen beschrieben. Auf diesen istThe following is an embodiment of the invention described with reference to the accompanying drawings. On this is

Fig. 1 eine Schnittansicht eines herkömmlichen Kraft­ fahrzeug-Scheinwerfers, und Fig. 1 is a sectional view of a conventional motor vehicle headlamp, and

Fig. 2 eine Schnittansicht eines ein dichroitisches Filter verwendenden Kraftfahrzeug-Scheinwerfers gemäß der Erfindung. Fig. 2 is a sectional view of an automotive headlamp using a dichroic filter according to the invention.

Fig. 2 zeigt einen Kraftfahrzeug-Scheinwerfer, welcher ein dichroitisches Filter verwendet. Gemäß Fig. 2 wird von einer Lampe 21, d. h. einer Lichtquelle, abgegebenes Licht durch einen um die Lampe 21 herum angeordneten Reflexions­ spiegel 22 auf eine Projektionslinse 23 hin reflektiert, die am Vorderende des Scheinwerfers angeordnet ist. Fig. 2 shows a motor vehicle headlights, wherein a dichroic filter used. According to FIG. 2, from a lamp 21, a light source, ie, light emitted by the lamp 21 around mirror arranged reflection 22 to a projection lens 23 reflects back, which is arranged at the front end of the headlight.

Ein dichroitisches Filter 24, welches Infrarotstrahlung und Ultraviolettstrahlung abfängt und nur sichtbares Licht durchläßt, ist zwischen der Lampe 21 und der Projektions­ linse 23 angeordnet.A dichroic filter 24 , which intercepts infrared radiation and ultraviolet radiation and only lets visible light through, is arranged between the lamp 21 and the projection lens 23 .

Ein mattbehandelter Mattierungsabschnitt 24a ist in der Mitte des dichroitischen Filters 24 ausgebildet, um zu ver­ hindern, daß der Scheinwerfer direktes Licht abgibt. Da das von der Lampe 21 abgegebene Licht durch den mattierten Ab­ schnitt 24a abgelenkt durchgelassen wird, kommt es zu keiner durch Direktabgabe von Licht verursachten Blendung eines entgegenkommenden Fahrers. Da der mattierte Abschnitt 24a das von der Lampe 21 abgegebene Licht also nicht abblockt, sondern nur streut, es also durchläßt, ist die schließlich durch die Projektionslinse 23 durchgehende Lichtmenge gegen­ über derjenigen eines Scheinwerfers mit Blende 13 (Fig. 1) oder geschwärzter Projektionslinse 14 (Fig. 1) erhöht und damit der Ausnutzungsgrad des von der Lampe 21 abgegebenen Lichts verbessert.A matt-treated matting section 24 a is formed in the middle of the dichroic filter 24 to prevent the headlight from emitting direct light. Since the light emitted by the lamp 21 is passed through the matted section 24 a deflected, there is no dazzling of an oncoming driver caused by direct emission of light. Since the matted section 24 a does not block the light emitted by the lamp 21 , but only scatters it, i.e. it transmits it, the amount of light finally passing through the projection lens 23 is higher than that of a headlight with an aperture 13 ( FIG. 1) or blackened projection lens 14 ( FIG. 1) increases and thus the degree of utilization of the light emitted by the lamp 21 is improved.

Wie oben beschrieben, kann der Kraftfahrzeug-Scheinwer­ fer gemäß der Erfindung Infrarotstrahlung, die die Projek­ tionslinse verformen kann, und Ultraviolettstrahlung, die schädliche Auswirkungen auf den menschlichen Körper haben kann, durch Verwendung des dichroitischen Filters abfangen. Ferner kann die Ausbildung des mattierten Abschnitts in der Mitte des dichroitischen Filters der Kraftfahrzeug-Schein­ werfer gemäß der Erfindung blendungsbedingte Unfälle verhin­ dern, indem die Abgabe direkter Strahlung verhindert ist, sowie den Stromverbrauch senken, indem der Ausnutzungsgrad des von der Lampe abgegebenen Lichts verbessert ist.As described above, the automotive headlamp fer according to the invention infrared radiation that the projec tion lens can deform, and ultraviolet radiation, the have harmful effects on the human body can trap using the dichroic filter. Furthermore, the formation of the frosted section in the Middle of the dichroic filter of the motor vehicle license throwers according to the invention prevent glare-related accidents by preventing the emission of direct radiation, as well as reduce electricity consumption by making full use of it of the light emitted by the lamp is improved.

Claims (2)

1. Kraftfahrzeug-Scheinwerfer mit
einer Lampe (21),
einem um die Lampe herum angeordneten Reflexionsspiegel (22) zum Reflektieren von von der Lampe abgegebenem Licht,
einem vor der Lampe angeordneten dichroitischen Filter (24) zum Ausfiltern von Infrarotstrahlung und Ultraviolett­ strahlung aus dem Licht, und
einer Projektionslinse (23) zum Projizieren des vom dichroitischen Filter durchgelassenen Lichts nach vorne.1. Motor vehicle headlights with
a lamp ( 21 ),
a reflection mirror ( 22 ) arranged around the lamp for reflecting light emitted by the lamp,
a dichroic filter ( 24 ) arranged in front of the lamp for filtering out infrared radiation and ultraviolet radiation from the light, and
a projection lens ( 23 ) for projecting the light transmitted through the dichroic filter to the front. 2. Kraftfahrzeug-Scheinwerfer nach Anspruch 1, wobei ein mattbehandelter Abschnitt (24a) in der Mitte des dich­ roitischen Filters (24) ausgebildet ist.2. Motor vehicle headlight according to claim 1, wherein a matt-treated section ( 24 a) in the middle of the dichroic filter ( 24 ) is formed.
DE19630935A 1996-03-29 1996-07-31 Motor vehicle headlights Withdrawn DE19630935A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960009178A KR970066252A (en) 1996-03-29 1996-03-29 Automotive headlamps with dichroic filter

Publications (1)

Publication Number Publication Date
DE19630935A1 true DE19630935A1 (en) 1997-10-02

Family

ID=19454459

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19630935A Withdrawn DE19630935A1 (en) 1996-03-29 1996-07-31 Motor vehicle headlights

Country Status (5)

Country Link
JP (1) JPH09267683A (en)
KR (1) KR970066252A (en)
CN (1) CN1165932A (en)
DE (1) DE19630935A1 (en)
GB (1) GB2311593A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19907365A1 (en) * 1999-02-20 2001-01-04 Matthias Rettig Xenon headlamp for automobile has filters or filter foils used for absorbing selected light components to prevent dazzle of oncoming automobile driver
FR2826920A1 (en) * 2001-07-06 2003-01-10 Koito Mfg Co Ltd Automotive infrared lamp for use with CCD camera in a motor vehicle, has ring-shaped region without infrared transmitting film on the periphery of the infrared transmitting filter
EP1614960A1 (en) * 2004-07-06 2006-01-11 Ichikoh Industries, Ltd. Light assembly for vehicle
DE102015111378B4 (en) * 2014-08-01 2017-05-24 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Lens system and method for eliminating thermal effects by solar focusing in lamps

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1364927A (en) * 1972-11-10 1974-08-29 Feldmesser K Automobile headlamps
US4386292A (en) * 1980-07-02 1983-05-31 Gte Products Corporation Projection lamp comprising single ended arc discharge lamp and an interference filter
US4388678A (en) * 1980-10-14 1983-06-14 Turner Wheeler M Reading and viewing lamp
JPH07109758B2 (en) * 1985-10-31 1995-11-22 東芝ライテック株式会社 Bulb
GB2272278B (en) * 1992-10-23 1997-04-09 Cancer Res Campaign Tech Light source

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19907365A1 (en) * 1999-02-20 2001-01-04 Matthias Rettig Xenon headlamp for automobile has filters or filter foils used for absorbing selected light components to prevent dazzle of oncoming automobile driver
FR2826920A1 (en) * 2001-07-06 2003-01-10 Koito Mfg Co Ltd Automotive infrared lamp for use with CCD camera in a motor vehicle, has ring-shaped region without infrared transmitting film on the periphery of the infrared transmitting filter
EP1614960A1 (en) * 2004-07-06 2006-01-11 Ichikoh Industries, Ltd. Light assembly for vehicle
US7244049B2 (en) 2004-07-06 2007-07-17 Ichikoh Industries, Ltd. Light assembly for vehicle
DE102015111378B4 (en) * 2014-08-01 2017-05-24 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Lens system and method for eliminating thermal effects by solar focusing in lamps

Also Published As

Publication number Publication date
GB9615617D0 (en) 1996-09-04
JPH09267683A (en) 1997-10-14
GB2311593A (en) 1997-10-01
CN1165932A (en) 1997-11-26
KR970066252A (en) 1997-10-13

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