EP1589282B1 - Dünne, plattenförmige Kraftfahrzeugleuchte - Google Patents

Dünne, plattenförmige Kraftfahrzeugleuchte Download PDF

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Publication number
EP1589282B1
EP1589282B1 EP04425280A EP04425280A EP1589282B1 EP 1589282 B1 EP1589282 B1 EP 1589282B1 EP 04425280 A EP04425280 A EP 04425280A EP 04425280 A EP04425280 A EP 04425280A EP 1589282 B1 EP1589282 B1 EP 1589282B1
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EP
European Patent Office
Prior art keywords
source
light
section
primary reflector
reflecting
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.)
Expired - Lifetime
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EP04425280A
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English (en)
French (fr)
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EP1589282A1 (de
Inventor
Davide Capello
Stefano c/o C.R.F. Società Consortile Bernard
Denis Bollea
Piermario Repetto
Piero Perlo
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Centro Ricerche Fiat SCpA
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Centro Ricerche Fiat SCpA
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Publication date
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Priority to DE602004001128T priority Critical patent/DE602004001128T2/de
Priority to EP04425280A priority patent/EP1589282B1/de
Priority to AT04425280T priority patent/ATE329204T1/de
Priority to ES04425280T priority patent/ES2263128T3/es
Publication of EP1589282A1 publication Critical patent/EP1589282A1/de
Application granted granted Critical
Publication of EP1589282B1 publication Critical patent/EP1589282B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • 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
    • F21S41/14—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]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/241—Light guides characterised by the shape of the light guide of complex shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/243—Light guides characterised by the emission area emitting light from one or more of its extremities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/249—Light guides with two or more light sources being coupled into the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • F21S43/315—Optical layout thereof using total internal reflection
    • 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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]

Definitions

  • the present invention relates to the field of lighting systems, and in particular lights for motor vehicles, of the type comprising one or more elementary cells, each including: a transparent dielectric module in the form of a plate, with two opposite main faces; a substantially point-like source set in the proximity of a first one of the two main faces of said module; a primary reflector formed on the second of the main faces of the module for reflecting a first time the light coming from the source that has traversed the plate; and a secondary reflector formed on the first main face of said module, for reflecting a second time the light already reflected by the primary reflector and directing it towards the outside of the module, on the side of said second main face, so as to collimate it in a pre-determined direction.
  • a lighting system of the type specified above has already been proposed by the present applicant in the European patent No. EP 0 766 115 B1 and in the corresponding U.S. patent No. US 5 841 596, as likewise in the European patent No. EP 0 767 393 B1 and in the corresponding U.S. patent No. US 5 884 995 .
  • the individual collimation cell operates in a mode similar to a telescope of the Cassegrain type.
  • a point-like light source 1 is located in the proximity of a first face I of a transparent plate 2 made of plastic material.
  • the light emitted by the source 1 is coupled within the plate 2 through a transparent portion of said face I, impinges upon a primary reflector 3 set on the second face II of the transparent portion and generally obtained by coating a portion of said face II with a reflecting layer, and is reflected by said primary reflector 3 towards a secondary reflector 4 set on the face I about said transparent portion and generally obtained by coating a portion of said face I with a reflecting layer.
  • the light is again reflected by the secondary reflector 4 towards the face II and exits from the plate through a transparent portion of said face II, undergoing a refraction.
  • the primary reflector 3 and secondary reflector 4 have shapes which are designed for producing in combination a collimation of the beam emitted by the point-like source 1.
  • the point-like source 1 can be located in a position corresponding to the transparent portion of the face 1 and possibly englobed in the plate in a position corresponding to said transparent portion.
  • the purpose of the present invention is to improve the performance of the optical system proposed previously by increasing control of the light distribution and hence the value of intensity in a pre-determined direction.
  • the primary reflector A is radiused to the transparent portion B with a continuous profile and with a continuous curvature, so that the portions C and D of the secondary reflector operate in a substantially exclusive way on the rays reflected by the primary reflector A and by the transparent portion B of the face II, respectively.
  • Figure 2 is a cross-sectional view of a first embodiment of the collimator which does not form part of the present invention, in a plane of cross section perpendicular to the plate.
  • the parts corresponding to those of Figure 1 are designated by the same reference numbers.
  • the point-like light source typically a chip-LED
  • the plate, made of synthetic material, is designated by 2, and I and II designate the two main faces of the plate 2 on which the primary reflector 3 and the secondary reflector 4 are formed.
  • the primary reflector 3 has a central section A, which is reflecting in so far as it is equipped with a reflecting coating 5, and a peripheral section B, which does not have a reflecting coating, but gives rise to a total internal reflection (TIR) of the rays of light coming from inside the plate with an angle of inclination with respect to the vertical direction of the figure greater than a given value.
  • TIR total internal reflection
  • the profile of the right-hand part (with reference to the figure) of the section A of the primary reflector is a profile of parabola with focus in a point corresponding to the source and axis AX inclined by an angle ⁇ with respect to the vertical.
  • the left-hand part of the section A has likewise an axis passing through the source and set in a way specularly symmetrical with respect to the axis AX. Consequently, said section A collimates the rays emitted by the source with an angle ⁇ on the secondary reflector C.
  • the size of the primary reflector A is such as to subtend an angle with respect to the source again equal to ⁇ , so that the point of radiusing between the sections A and B is continuous both in profile and in curvature.
  • the angle ⁇ is chosen so as to be greater than the TIR angle so as to guarantee conditions of TIR on the entire section B of the face II. The choice of an angle slightly greater than the TIR angle enables minimization of the size of the primary reflector A.
  • the rays reflected by the primary reflector A are subsequently reflected by the secondary reflector C.
  • the rays reflected by the transparent portion B are instead reflected by the secondary reflector D.
  • the light is installed on a motor vehicle so that the axis z perpendicular to the surface of the cell is substantially parallel to the longitudinal axis of the vehicle.
  • the primary reflector A generates an annular image of the point-like source. Said image can be: at infinity, in the case of section A being parabolic; virtual, in the case of section A being hyperbolic; or real, in the case of section A being elliptical.
  • the transparent reflecting portion B generates, instead, a virtual point-like image of the chip-LED.
  • the secondary reflector C is a complex surface that operates on the rays reflected by the primary reflector A in order to generate a desired distribution of light.
  • the secondary reflector D operates, instead, on the rays reflected by the transparent reflector B to generate a desired distribution of light.
  • Each of the two surfaces C and D can be segmented into a number of sectors so as to have an envelope in common (and continuous in the point of radiusing).
  • the light cannot be positioned perpendicular to the longitudinal axis of the vehicle, but rather inclined with respect to two angles: the first is formed by rotating the light with respect to the axis Y (which exits from the plane of the figure); the second is formed by rotating it with respect to the axis X (see Figure 4).
  • Figure 3 shows precisely a cell of the light according to the invention, designed for being installed so as to have the axis of the reflector oriented by the angle ⁇ with respect to the longitudinal axis of the motor vehicle.
  • the primary reflector A is constituted by a surface of an elliptical, parabolic or hyperbolic type.
  • Figure 3 represents the case of a parabolic type (similar to Figure 2), in which the axis of rotation of the parabola has an angle ⁇ with respect to the straight line perpendicular to the faces of the cell.
  • the choice of the type of surface of the primary reflector A is dictated by the angle ⁇ , by the thickness of the device, and by considerations regarding the luminance of the cell.
  • Figure 5A illustrates a case where the surface of the primary is of a parabolic type, and the angle of collimation ⁇ is such that a part of the light reflected by the secondary reflector C arrives again on the primary reflector (in the portion designated by 4); this entails a loss of efficiency of the device or, in any case, a loss of control of part of the light. In order to prevent this effect, it is possible to resort, in the case of Figure 5A, to a different shape of the primary reflector.
  • Figure 5B illustrates a type of primary reflector A of elliptical cross section with one focus in the source and the other focus determined with the following methodology: considering the left-hand side of the profile of the cell of Figure 5B, the focus 2 is determined as the intersection of the two extreme rays 1 and 4 reflected by the primary reflector A.
  • the point 1 is the point of intersection between the primary reflector A and the transparent section B, the TIR angle determines the ray reflected by the point 1 of the primary reflector.
  • the ray reflected by the point 4 is chosen so that the ray reflected by the secondary reflector C will exit from the cell with an angle ⁇ passing through the point 1, preventing it from arriving back, as occurred in the case of Figure 5A on the primary reflector A.
  • the focus 2 of the primary reflector A determines an area 3 of the transparent section B from which rays do not exit. Said area 3 will present as an area of shadow, if the observer is positioned in the direction given by the angle ⁇ .
  • the configuration of Figure B enables efficiency/control of the light emitted by the device not to be lost, but leads to an extension of the area of shadow represented by the primary reflector A.
  • the primary reflector A can be built not having rotational symmetry as indicated in Figure 5C.
  • the cross section of Figure 5C illustrates a surface having a cross section of an elliptical type in the left-hand area of the profile of the cell and of a parabolic type in the right-hand area.
  • the secondary reflector in this example of light, is not a surface of rotation.
  • the part of reflector C deflects the rays coming from the primary reflector A so that, after the interface B, they will exit with a preferential angle ⁇ to form the desired distribution of intensity.
  • the part of reflector D receives the rays that impinge upon the interface B with an angle greater than the limit angle (TIR) and deflects them according to the same principle as that of the reflector C.
  • TIR limit angle
  • the part of transparent surface B may be smooth, in which case the distribution of intensity is created by the reflecting surfaces C and D; there may be provided an additional transparent portion, on the internal surface of which there are present microlenses or prisms calculated so as to widen the distribution of light.
  • Figure 6 is an example of configuration in which the array of microlenses is inserted in the internal part of a transparent portion set in front of the individual elementary cells. Said transparent portion bearing the microlenses may be colourless or else coloured.
  • the dielectric plate which is designed for collimating the light emitted by the sources can be coloured; in both cases, the colour of the transparent portion must be such as to transmit all or almost all of the light of the wavelength emitted by the corresponding microsource or microsources.
  • Figure 7 is a front view of a hexagonal elementary cell.
  • the chip-LED source is positioned in the centre and is visible in so far as the primary reflector A has been masked in order to highlight the absence of rotational symmetry of the secondary reflectors C and D.
  • Figure 8 represents the distribution of intensity in which the excellent degree of control of the outgoing beam is highlighted.
  • the value of efficiency of the device is equal to 70%, with a value of reflectance of the reflecting surfaces of 0.85.
  • the number of sources for each individual cell that forms part of the light does not emerge as a constraint. It is in fact possible to set alongside one another a number of microsources about the axis of the individual elementary cell in order to increase the flow of light.
  • Figure 9 illustrates, by way of example, a case in which a multitude of cells with a hexagonal shape have been set alongside one another.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Air-Conditioning For Vehicles (AREA)

Claims (25)

  1. Beleuchtungssystem, speziell ein Motorfahrzeuglicht, gebildet aus wenigstens einer elementaren Zelle, wobei jede Zelle enthält: ein transparentes dielektrisches Modul in der Form einer Platte (2), mit zwei gegenüberliegenden Hauptseiten (I, II); eine im Wesentlichen punktförmige Quelle (1) angelegt in der Nähe der ersten (I) der zwei Hauptseiten des Moduls; einen Primärreflektor (3) gebildet auf der zweiten (II) der Hauptseiten des Moduls zur erstmaligen Reflektion von Licht, das von der Lichtquelle (1) kommt, welches die Platte (2) durchquert hat; und einen sekundären Reflektor (4) gebildet auf der ersten Hauptseite (I) des Moduls zur Reflektion des Lichts zum zweiten Mal, welches bereits durch den primären Reflektor reflektiert wurde und zur Richtung desselben in Richtung der Außenseite des Moduls, auf der Seite der zweiten Hauptseite (II), damit es in einer vorbestimmten Richtung kollimiert wird, wobei:
    - der primäre Reflektor (3) aus zwei Teilen gebildet wird: einem im Wesentlichen gekrümmten zentralen Abschnitt (A), welcher mit einer reflektierenden Schicht (5) beschichtet ist, welche dazu bestimmt ist, einen Teil der Strahlen, die durch die Quelle (1) emittiert werden, zu reflektieren; und einen im Wesentlichen flachen und transparenten umfänglichen Abschnitt (B), welcher dazu bestimmt ist, in gesamter innerer Reflektion (TIR) einen weiteren Teil der Strahlen, welche von der Quelle (1) emittiert werden, zu reflektieren; und
    - der sekundäre Reflektor aus zwei Abschnitten gebildet wird: einem ersten Abschnitt (C), welcher mit einer reflektierenden Schicht beschichtet ist und dazu bestimmt ist das Licht, welches vom zentralen Abschnitt (A) des primären Reflektors reflektiert ist, aufzunehmen und dieses in Richtung des transparenten Abschnitts (B) des primären Reflektors zu reflektieren; und einen zweiten Abschnitt (D), welcher mit einer reflektierenden Schicht beschichtet ist und dazu bestimmt ist das Licht, welches in TIR durch den transparenten Abschnitt (B) reflektiert wurde, aufzunehmen und es wiederum nach außen durch den Abschnitt (B) zu reflektieren;
    gekennzeichnet dadurch, dass der sekundäre Reflektor (C) aus einer Vielzahl von Segmenten von quadratischen Oberflächen gebildet wird, z.B. Paraboloiden, Ellipsoiden oder Hyperboloiden, welche auf nicht-kontinuierliche Weise aneinander gerundet sind,
    dadurch, dass der sekundäre Reflektor (D) aus einer Vielzahl von Segmenten von quadratischen Oberflächen gebildet wird, z.B. Paraboloiden, E1-lipsoiden oder Hyperboloiden, die auf nicht-kontinuierliche Weise aneinander gerundet sind, so dass das Licht in einer vorbestimmten Richtung, geneigt in Bezug auf die geometrische Achse (z) der Zelle kollimiert wird.
  2. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass die reflektierenden Schichten auf den Oberflächen A, C und D Metallbeschichtungen sind.
  3. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass die reflektierenden Schichten auf den Oberflächen A, C und D mehrlagige dielektrische Beschichtungen sind.
  4. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass die reflektierenden Schicht auf der Oberfläche A teilweise transparent ist, so dass sie einen Teil des Lichts durchlässt, welches von der Quelle emittiert wird und auf den primären Reflektor auftrifft.
  5. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass der primäre Reflektor A durch eine Oberfläche gebildet wird, die durch Drehung von wenigstens einem Segment einer konischen Kurve erhalten wird (verstanden als Linie, die sich aus dem Schnitt des Konus mit einer Ebene ergibt) um eine Achse, die durch die Quelle senkrecht zu den Hauptoberflächen der Platte verläuft.
  6. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass die Quelle in der Nähe des Brennpunktes der konischen Kurve positioniert ist.
  7. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass das Segment der konischen Kurve ein Segment einer Parabel ist, die eine Achse hat, welche in Richtung der Außenseite um einen Winkel größer oder gleich dem TIR-Winkel geneigt ist.
  8. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass das Segment der konischen Kurve ein Segment einer Ellipse ist, welche den ersten Brennpunkt in der Nähe der Quelle hat.
  9. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass der primäre Reflektor A nicht durch eine Drehoberfläche gebildet wird.
  10. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass der Abschnitt A des primären Reflektors und der Abschnitt B des primären Reflektors so aneinander gerundet sind, dass sowohl das Profil als auch die Krümmung am Ort der Punkte der Rundung fortlaufend sind.
  11. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass der sekundäre Reflektor C durch eine Vielzahl von Segmenten von asymmetrischen Konen gebildet wird, welche entworfen sind, das Licht, das von einem ringförmigen Bild der Quelle kommt, wobei das Bild durch die Drehoberfläche des primären Reflektors A erzeugt wird, in eine vorbestimmte Richtung zu kollimieren.
  12. Vorrichtung gemäß Anspruch 11, dadurch gekennzeichnet, dass die quadratischen Oberflächen Rotationsparaboloide sind, deren Brennpunkt im virtuellen Bild der Quelle liegt, wobei das Bild durch den transparenten Abschnitt B des primären Reflektors erzeugt wird.
  13. Vorrichtung gemäß Anspruch 12, dadurch gekennzeichnet, dass die Rotationsparaboloide zueinander parallele Achsen haben, so dass sie das Licht in einer vorbestimmten Richtung kollimieren.
  14. Vorrichtung gemäß Anspruch 12, dadurch gekennzeichnet, dass die Rotationsparaboloide Achsen haben, die nicht zueinander parallel sind, und so orientiert sind, dass sie eine vorbestimmte Lichtstreuung erzeugen.
  15. Vorrichtung gemäß irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die transparente Platte farblos ist.
  16. Vorrichtung gemäß irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die transparente Platte gefärbt ist und dadurch, dass die Färbung jeder elementaren Zelle derartig ist, dass sie kein Licht absorbiert, das durch die Quelle dieser Zelle abgegeben wird.
  17. Vorrichtung gemäß irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in wenigstens einer der Zellen mehr als eine Quelle vorliegt, wobei die Quellen nahe zueinander positioniert sind.
  18. Vorrichtung gemäß irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Quelle ein LED in der Form eines Chips ist, d.h. ohne Gehäuse.
  19. Vorrichtung gemäß Anspruch 18, dadurch gekennzeichnet, dass der Chip in die Platte eingelassen ist.
  20. Vorrichtung gemäß irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Dicke der Platte geringer als 15 mm ist.
  21. Vorrichtung gemäß irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der zweite transparente Abschnitt in einer Position bereitgestellt ist, die dem Strahl entspricht, der aus der Platte herauskommt.
  22. Vorrichtung gemäß Anspruch 21, dadurch gekennzeichnet, dass der transparente Abschnitt gefärbt ist, während das Dielektrikum, das die Platte aufbaut, farblos ist.
  23. Vorrichtung gemäß Anspruch 21, dadurch gekennzeichnet, dass der transparente Abschnitt auf seiner inneren Oberfläche, die der Platte gegenüberliegt, eine Vielzahl von Mikrolinsen und/oder Prismen aufweist, welche dazu entworfen sind, den Lichtstrahl, der aus der Platte herauskommt, gleich zu richten/abzuleiten.
  24. Fahrzeuglicht, speziell ein Rücklicht, dadurch gekennzeichnet, dass es eine Vorrichtung gemäß irgendeinem der vorhergehenden Ansprüche enthält.
  25. Frontlicht für ein Fahrzeug dadurch gekennzeichnet, dass es eine Vorrichtung gemäß irgendeinem der vorhergehenden Ansprüche 1 bis 24 enthält.
EP04425280A 2004-04-21 2004-04-21 Dünne, plattenförmige Kraftfahrzeugleuchte Expired - Lifetime EP1589282B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE602004001128T DE602004001128T2 (de) 2004-04-21 2004-04-21 Dünne, plattenförmige Kraftfahrzeugleuchte
EP04425280A EP1589282B1 (de) 2004-04-21 2004-04-21 Dünne, plattenförmige Kraftfahrzeugleuchte
AT04425280T ATE329204T1 (de) 2004-04-21 2004-04-21 Dünne, plattenförmige kraftfahrzeugleuchte
ES04425280T ES2263128T3 (es) 2004-04-21 2004-04-21 Faro en forma de placa delgada para vehiculos automoviles.

Applications Claiming Priority (1)

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EP04425280A EP1589282B1 (de) 2004-04-21 2004-04-21 Dünne, plattenförmige Kraftfahrzeugleuchte

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EP1589282A1 EP1589282A1 (de) 2005-10-26
EP1589282B1 true EP1589282B1 (de) 2006-06-07

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EP (1) EP1589282B1 (de)
AT (1) ATE329204T1 (de)
DE (1) DE602004001128T2 (de)
ES (1) ES2263128T3 (de)

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DE102006008199B4 (de) * 2006-02-22 2016-02-04 Hella Kgaa Hueck & Co. Leuchteneinheit für Fahrzeuge
GB0712614D0 (en) 2007-06-29 2007-08-08 Dialight Lumidrives Ltd Improved spatial luminance
JP5152572B2 (ja) * 2008-03-24 2013-02-27 スタンレー電気株式会社 車両前照灯
NL1037239C2 (nl) * 2009-08-31 2011-03-01 Spanninga Metaal Rijwiel en achterlicht voor een rijwiel.
JP5681513B2 (ja) * 2011-02-08 2015-03-11 株式会社小糸製作所 車両用前照灯
JP5944617B2 (ja) * 2011-02-08 2016-07-05 株式会社小糸製作所 灯具ユニット
JP5707661B2 (ja) * 2011-03-25 2015-04-30 スタンレー電気株式会社 車両用灯具ユニット及び車両用灯具に用いられる導光体
CN102506322A (zh) * 2011-10-31 2012-06-20 中国科学院长春光学精密机械与物理研究所 一种用于光栅尺的平板型led高度准直照明系统
CN102588787A (zh) * 2012-02-14 2012-07-18 杭州光锥科技有限公司 基于反射透射型均匀大功率led光源
US10295153B2 (en) * 2013-08-22 2019-05-21 Signify Holding B.V. Optical system for producing uniform illumination
WO2023012651A1 (en) * 2021-08-02 2023-02-09 Varroc Engineering Limited A vehicle tail-light assembly
DE102021129851A1 (de) * 2021-11-16 2023-05-17 HELLA GmbH & Co. KGaA Lichtleiterelement für eine Beleuchtungsvorrichtung für ein Kraftfahrzeug

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US5980054A (en) * 1996-05-09 1999-11-09 Matsushita Electric Industrial Co., Ltd. Panel-form illuminating system
WO1999009349A1 (en) * 1997-08-12 1999-02-25 Decoma International Inc. Bireflective lens element
DE20206829U1 (de) * 2002-04-30 2002-09-05 Automotive Lighting Reutlingen GmbH, 72762 Reutlingen Leuchte, insbesondere Begrenzungsleuchte
FR2840388B1 (fr) * 2002-05-31 2004-07-30 Valeo Vision Feu de signalisation comportant une piece optique realisant une fonction de signalisation de maniere autonome
JP4162935B2 (ja) * 2002-07-04 2008-10-08 株式会社小糸製作所 車両用灯具
JP2004103379A (ja) * 2002-09-09 2004-04-02 Koito Mfg Co Ltd 車両用標識灯
US6896381B2 (en) * 2002-10-11 2005-05-24 Light Prescriptions Innovators, Llc Compact folded-optics illumination lens

Also Published As

Publication number Publication date
DE602004001128D1 (de) 2006-07-20
ATE329204T1 (de) 2006-06-15
EP1589282A1 (de) 2005-10-26
ES2263128T3 (es) 2006-12-01
DE602004001128T2 (de) 2006-12-14

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