EP0766037A1 - Beleuchtungsvorrichtung, die mit einer reduzierten Dicke herstellbar ist, insbesondere Scheinwerfer oder andere äussere Fahrzeuglampe - Google Patents

Beleuchtungsvorrichtung, die mit einer reduzierten Dicke herstellbar ist, insbesondere Scheinwerfer oder andere äussere Fahrzeuglampe Download PDF

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Publication number
EP0766037A1
EP0766037A1 EP96115489A EP96115489A EP0766037A1 EP 0766037 A1 EP0766037 A1 EP 0766037A1 EP 96115489 A EP96115489 A EP 96115489A EP 96115489 A EP96115489 A EP 96115489A EP 0766037 A1 EP0766037 A1 EP 0766037A1
Authority
EP
European Patent Office
Prior art keywords
reflector
lighting device
reliefs
propagation
profile
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
Application number
EP96115489A
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English (en)
French (fr)
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EP0766037B1 (de
Inventor
Stefania Masuelli
Sabino Sinesi
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.)
Marelli Automotive Lighting Italy SpA
Original Assignee
Magneti Marelli SpA
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 Magneti Marelli SpA filed Critical Magneti Marelli SpA
Publication of EP0766037A1 publication Critical patent/EP0766037A1/de
Application granted granted Critical
Publication of EP0766037B1 publication Critical patent/EP0766037B1/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
    • F21V5/00—Refractors for light sources
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/337—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having a structured surface, e.g. with facets or corrugations
    • 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
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the 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
    • 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
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • 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

Definitions

  • the present invention relates to a lighting device that can be constructed in such a way that its thickness, that is, its space requirement in terms of depth, is much less than its other dimensions, especially than the surface area of the lens.
  • a lighting device is useful as a headlamp or other external vehicle lamp.
  • lighting devices in many automotive applications such as headlamps and/or other external lamps, require high power, good optical distribution of the light beam, low power consumption and small size, especially in the direction of depth, that is, parallel with the optical axis of propagation of the final light beam that is to be produced.
  • US Patent 5,046,805 relates to a device in which the light beam emitted by the source, transversely to the direction in which it is to be aimed, is collected by a lightguide along which the beam is transmitted by internal reflection and from which it is extracted at the desired points by means of scatterers; while Italian Patent Application No.
  • TO94A000773 by the present Applicant discloses a device in which the light beam is collected by a lightguide defined by two mouldings presenting a plurality of appropriately angled interfaces along which the two mouldings, which are transparent, are glued by means of a layer of optical adhesive with a defined refractive index: in this way the propagation of the light beam along the guide produces, as it passes each interface, phenomena of partial refraction/reflection by means of which the light is extracted and guided.
  • Both the devices described therefore employ a lightguide as a modifier/extractor of the desired beam.
  • the first device in accordance with the cited US patent, gives excellent uniformity of illumination of the guide, but allows no control over the distribution of the light intensity and divergence of the final beam output by the device: such control is necessary in the case of automotive devices.
  • These functions must therefore be handled, where possible, by the lens, so that manufacture is made more complex and the space requirement increased.
  • the efficiency of the lightguide can be shown to be very low: efficiency is a function of the number of interfaces and only if this number is large enough (greater than 100) is it possible to achieve more than 45% efficient extraction of the light.
  • efficiency is a function of the number of interfaces and only if this number is large enough (greater than 100) is it possible to achieve more than 45% efficient extraction of the light.
  • the possibility of using a large number of interfaces is limited by the physical dimensions available to the lightguide, which will be small if the space requirements of the device are to be kept down.
  • the small dimensions of the final device are therefore achieved at the cost of light efficiency, making it necessary to use high-power lamps and/or a large number of lamps, which in turn means heavy power consumption.
  • uniformity of illumination is inversely proportional to the number of interfaces.
  • the guides must be inefficient, or alternatively the reflective/refractive characteristics of each interface of the guides must be modified. This can be done either by having different dimensions for each succeeding interface, or by modifying the refractive index of the adhesive between them; however, either method introduces a complication into the manufacturing process and the problem in question is not always satisfactorily solved.
  • the invention therefore provides a lighting device, usable as a headlamp or other external vehicle lamp, whose thickness is less than its other dimensions, comprising at least one light source, a modifier/extractor and at least one reflector for collimating a beam of light rays from the source towards the modifier/extractor, which latter is designed to control the divergence and intensity distribution of the beam and deflect it through a lens arranged approximately parallel to the direction of propagation of the beam, in front of the modifier/extractor; characterized in that the modifier/extractor is a second reflector facing the first, the upper surface, directly facing the lens, of which second reflector is arranged obliquely to the direction of propagation of the beam, in such a way that the second reflector is approximately wedge-shaped in cross section in the direction of propagation of the beam; and in that said upper surface is defined at least in part by a plurality of mutually adjacent reliefs, each of which has, in the direction of propagation of the beam, a sawtooth profile such that for each relief the ob
  • the peaks of said sawtooth reliefs all lie on a continuous curved profile of defined shape, which is preferably a complex profile made up of a plurality of curves of different equations fitted together without discontinuity up to a defined order of derivative, preferably to the second order.
  • the oblique sides of the reliefs are defined by respective planar or curved reflective surfaces, optionally defined by complex profiles, and said reliefs all have a constant profile, so that the oblique sides all have the same inclination, or they may differ in profile from each other, so that the oblique sides have different inclinations.
  • the surfaces defining said oblique sides of the reliefs are given diffractive optics or microoptics, either formed directly on these surfaces or applied to them; these diffractive microoptics may optionally be formed directly on a surface of the second reflector that has no reliefs, instead of part of the sawtooth reliefs themselves.
  • the lens is preferably provided with a plurality of refractive, diffractive or hybrid diffractive/refractive lenses/microlenses for receiving the light beam after the second reflector has modified and deflected it and giving it a desired definitive distribution.
  • the numeral 10 is a general reference for a lighting device, in the present case a headlamp or other external vehicle lamp, that basically comprises an envelope 2 of known type, illustrated only schematically for simplicity's sake, of, for example, parallelepipedal shape and containing a light source 1 and a reflector 3, of for example parabolic profile; the envelope 2 is closed on the outside (sealed against the ingress of fluids, for example) by a transparent screen or lens 6 (Fig. 1).
  • a lighting device in the present case a headlamp or other external vehicle lamp
  • an envelope 2 of known type, illustrated only schematically for simplicity's sake, of, for example, parallelepipedal shape and containing a light source 1 and a reflector 3, of for example parabolic profile
  • the envelope 2 is closed on the outside (sealed against the ingress of fluids, for example) by a transparent screen or lens 6 (Fig. 1).
  • the thickness S of the device 10 measured parallel to an optical axis A along which the rays 11 produced by the device 10 are directed is much smaller (for example by an order of magnitude) than the length L of the envelope 2, whereas it may be of any width, meaning its dimension perpendicular to the length L and to the thickness S, depending on what the lighting requirements are.
  • the reflector 3, and the source 1, are arranged at one end 4 of the envelope 2, in such a way that the reflector 3 collimates the various light rays 9 emitted by the source 1 and directs them, parallel to each other, along a direction of propagation X - indicated by the arrow in Figure 1 and parallel with the lens 6 and with the side of dimension L of the envelope 2 - perpendicularly and on one side of the optical axis A.
  • the envelope 2 also houses a modifier/extractor component, the function of which is to collect the rays 9 collimated by the reflector 3 and deflect them, with defined divergence and intensity with respect to the optical axis A through the lens 6, to form the rays 11 of the final light beam which it is desired to obtain.
  • this modifier/extractor component consists of a second reflector 13 facing the reflector 3, opposite from it and in front of the lens 6, for the entire length L of the envelope 2.
  • the reflector 13 has a completely reflective upper surface 14 directly facing the lens 6 and arranged obliquely to the direction X of propagation of the beam of rays 9.
  • the reflector 13 is consequently basically wedge-shaped in cross section (cutting in direction X).
  • the surface 14 is defined, wholly or at least in part, by a plurality of mutually adjacent reliefs 15, each of which has, in the direction X of propagation of the light beam collimated by the reflector 3, a sawtooth profile ( Figures 3 and 5); each relief 15 ( Figures 3 and 5) is therefore defined by an oblique side 16, turned towards the light source 1 and lying at a defined angle relative to the direction of propagation X, and by an opposite side 18 situated approximately perpendicularly to the lens 6.
  • Both sides 16, 18 are defined, in the present example, by reflective surfaces. These surfaces may be planar, as illustrated, or may be curved, either in direction X or at right angles to this direction, the curvature being described by a single equation or, if required, by a series of different equations (complex surface), in order to control the divergence of the beam of rays 11 leaving the device 10 in the two directions perpendicular to the optical axis A.
  • the reliefs 15 are so shaped that respective peaks 20 of said sawtooth teeth all lie on a continuous curved profile of defined shape, illustrated by a dashed line marked 21 in Figure 3.
  • the profile 21 is such as to give the reflective surface 14 as a whole a generally concave configuration made up of all the mutually adjacent reliefs 15 put together and, depending on how the final beam of rays 11 is to be distributed and deflected through the lens 6, this profile 21 may have a single equation (may for example be parabolic or elliptical) or, preferably, be a complex profile made up of a plurality of curves of different equations (for example a parabola, a portion of an ellipse, a portion of a circle, a portion of a hyperbole, etc.) fitted together without discontinuities up to a defined order of derivative, preferably to the second order.
  • the profile 21 is chosen by calculation, in such a way as to find the best possible compromise between the following requirements:
  • Figure 4 illustrates, though not in scale, three different possible profiles 21a, 21b and 21c and shows how the same ray 9 collimated by the reflector 3 is reflected at different angles by each profile 21, thus producing outgoing rays 11a, 11b and 11c having different divergences and striking the lens 6 at quite different points.
  • the teeth or reliefs 15 are all of the same profile, so that the oblique sides 16 all have the same inclination, or, in the variant illustrated in Figure 5, the reflective surface 14 of the reflector, marked 13a, is composed of reliefs 15 whose profiles differ from each other, so that the oblique sides 16 have different inclinations, in order to modify the light distribution (as is indicated by the differing divergences of the resulting outgoing rays 11) without altering the uniformity of illumination of the lens 6.
  • the reliefs 15, especially the surfaces defining their oblique sides 16, can be provided with diffractive optics or microoptics 25a and 25b, different from each other (or identical to each other), their function being the initial distribution of the desired final light beam.
  • These optics 25a, 25b may be formed directly on the surfaces 16, as a series of microreliefs produced directly along with the component 13, which is preferably a moulding in a synthetic plastic resin, or be made, by a known technique, on respective transparent films (known and not shown), which in turn are applied to the surfaces 16 as a coating, for example by adhesive bonding.
  • these may in some cases completely replace some of the sawtooth reliefs 15: in other words, in this case, some areas of the surface 14 have no reliefs 15 and only a diffractive optic. Either way, these surface 14 areas must still lie on the overall profile 21 defining the shape of the surface 14 as a whole.
  • the lens 6 is provided with a plurality of refractive, diffractive or hybrid diffractive/refractive lenses/microlenses 6a ( Figure 1) for receiving the light beam after the surface 14 has modified and deflected it, and giving it the desired definitive distribution.
  • These optics 6a may likewise be formed directly on the lens 6, or on films which are then adhesively bonded to the lens 6, for example on the inside of the device 10.
  • the light source 1 may be of any type capable of emitting monochromatic, polychromatic, coherent, partially coherent or totally incoherent light; for instance, it may be a filament (incandescent), gas, ion-discharge, solid-state polymer, LED (optionally with suitable collimating lenses), halogen or neon lamp, or may consist of an optical fibre; if it is wished not to use the direct rays, moreover, the source 1 can be masked, as known, by a concealing shield arranged near the second reflector 13.
  • FIG. 1 and 2 uses a single source of light 1 arranged at one end 4 of the device 10; however, on the basis of the available space and of the power needed to produce the desired final light beam, many other embodiments of the device 10 are possible, two of which, marked 10a and 10b, are illustrated in Figures 7 and 8, as alternatives using more light sources.
  • Figure 7 shows a device 10a of elongate shape comprising a pair of opposing in-line reflectors 3, each provided with its own light source 1, and a modifier/extractor consisting of another reflector 13b in the shape of a double wedge arranged between and in line with the two reflectors 3, and defined by a pair of oblique reflective upper surfaces 14a and 14b, whose inclinations are opposite and which each face a reflector 2 and are each defined by a plurality of adjacent reliefs 15, which diminish away from a common middle top portion 34 towards the respective reflectors 3.
  • this variant and also the previous one, as shown in Figures 1 and 2, can serve as an infinitely replicable module along the direction perpendicular to the side L, in which the sources 1 are arranged in succession on the same side (or on the two opposite sides).
  • a device 10c according to the invention can also be made with circular symmetry about the optical axis A: the device 10c in this case comprises a reflector 13c defined by a reflective upper surface 14 of generally conical form, formed by a plurality of annular reliefs 15, each having a sawtooth profile in the radial direction; this reflector 13c, arranged so that its axis is on the optical axis A, is arranged inside a suitable envelope 2 together with a plurality of reflectors 3, each having its own light source 1, disposed radially in a ring around the reflector 13c; at the front, the device 10c is closed by a lens 6. In this way, essentially the same operational configuration is reproduced in any radial direction defined by the axis of a reflector 3 as that of the device 10 of Figures 1 and 2.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP96115489A 1995-09-27 1996-09-26 Beleuchtungsvorrichtung, die mit einer reduzierten Dicke herstellbar ist, insbesondere Scheinwerfer oder andere äussere Fahrzeuglampe Expired - Lifetime EP0766037B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO950771 1995-09-27
IT95TO000771A IT1281366B1 (it) 1995-09-27 1995-09-27 Dispositivo di illuminazione realizzabile con spessore ridotto, in particolare proiettore o fanale per veicoli

Publications (2)

Publication Number Publication Date
EP0766037A1 true EP0766037A1 (de) 1997-04-02
EP0766037B1 EP0766037B1 (de) 2003-02-05

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EP96115489A Expired - Lifetime EP0766037B1 (de) 1995-09-27 1996-09-26 Beleuchtungsvorrichtung, die mit einer reduzierten Dicke herstellbar ist, insbesondere Scheinwerfer oder andere äussere Fahrzeuglampe

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EP (1) EP0766037B1 (de)
DE (1) DE69626078T2 (de)
ES (1) ES2189846T3 (de)
IT (1) IT1281366B1 (de)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999000623A1 (en) * 1997-06-30 1999-01-07 Donnelly Corporation Automotive lamp lens and lamp system utilizing diffractive optics and method for making the same
EP0933587A2 (de) 1998-01-30 1999-08-04 Hella KG Hueck & Co. Stabförmiger Lichtleiter
EP0886101A3 (de) * 1997-06-19 2000-11-02 C.R.F. Società Consortile per Azioni Leuchte für Kraftfahrzeuge
EP1079172A1 (de) * 1999-08-11 2001-02-28 Automotive Lighting Italia Spa Kraftfahrzeugleuchte
EP0974485A3 (de) * 1998-07-24 2001-04-25 Stanley Electric Co., Ltd. Signalleuchte für Fahrzeuge
KR20010049945A (ko) * 1999-10-21 2001-06-15 모치마루 마모루 소형광원모듈
DE10022780A1 (de) * 2000-05-10 2001-11-15 Hella Kg Hueck & Co Stabförmiger Lichtleiter
DE10022779A1 (de) * 2000-05-10 2001-11-15 Hella Kg Hueck & Co Stabförmiger Lichtleiter
EP1152187A3 (de) * 2000-05-02 2002-11-13 C.R.F. Società Consortile per Azioni Beleuchtungseinrichtung
FR2829225A1 (fr) 2001-09-05 2003-03-07 Automotive Lighting Reutlingen Bloc optique
EP1258395A3 (de) * 2001-05-18 2005-07-20 C.R.F. Società Consortile per Azioni Beleuchtungseinrichtung insbesondere für Fahrzeuge oder Notlicht
FR2906009A1 (fr) * 2006-09-19 2008-03-21 Valeo Vision Sa Dispositif d'eclairage et/ou de signalisation pour vehicule automobile.
WO2010022539A1 (zh) * 2008-08-26 2010-03-04 Pan Dingguo 等截面三角形定向棱镜圆形反光板及由其制成的圆板灯
DE10247980B4 (de) * 2002-10-15 2011-05-26 Automotive Lighting Reutlingen Gmbh Fahrzeugleuchte
WO2011134164A1 (zh) * 2010-04-30 2011-11-03 Pan Dingguo 微棱镜导光板及其制造方法、及其制成的片灯、片灯具
DE102010051826A1 (de) * 2010-11-18 2012-05-24 Valeo Schalter Und Sensoren Gmbh Lichtleiter, insbesondere zum Beleuchten eines Schachtes für einen Datenträger, und Abspielgerät mit einem derartigen Lichtleiter
DE102007020397B4 (de) * 2007-04-27 2012-06-21 Bombardier Transportation Gmbh Beleuchtungsvorrichtung für die Beleuchtung von Fahrzeuginnenräumen
CN101459799B (zh) * 2007-12-14 2013-02-20 三星电子株式会社 投影型显示设备及其显示方法
WO2013059811A1 (en) * 2011-10-21 2013-04-25 Energy Focus, Inc. Efficient side-light distribution system
CN103175086A (zh) * 2013-04-07 2013-06-26 长春鸿德汽车照明有限公司 汽车信号灯具led虚拟光源
US8646961B2 (en) 2008-08-26 2014-02-11 Dingguo Pan Reflective plate, planar lamp and planar lamp fixture including the same
CN104042158A (zh) * 2013-03-11 2014-09-17 科勒公司 具有被照亮的座圈铰链的马桶
EP2258978A3 (de) * 2000-11-29 2015-09-23 Zumtobel Lighting GmbH Leuchte mit einer lichtdurchlässigen Scheibe
DE102014212299A1 (de) 2014-06-26 2015-12-31 Automotive Lighting Reutlingen Gmbh Lichtleiter-Anordnung zum Einsatz in einer Beleuchtungseinrichtung eines Kraftfahrzeugs und Kraftfahrzeugbeleuchtungseinrichtung mit einer solchen Lichtleiter-Anordnung
DE102011018508C5 (de) * 2011-04-23 2016-06-30 Automotive Lighting Reutlingen Gmbh Lichtleiterelement-Anordnung und Kraftfahrzeugbeleuchtungseinrichtung mit einer solchen Lichtleiterelement-Anordnung
CN106287484A (zh) * 2015-06-29 2017-01-04 Zkw集团有限责任公司 用于产生机动车大灯的至少一个照明功能和/或信号化功能的光导体装置
CN106287485A (zh) * 2015-06-29 2017-01-04 Zkw集团有限责任公司 用于产生机动车大灯的至少一个照明功能和/或信号化功能的光导体装置
WO2018054734A1 (de) * 2016-09-20 2018-03-29 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für fahrzeuge mit einem hologrammelement und einem prismenreflektor
US10194777B2 (en) 2017-02-06 2019-02-05 Kohler Co. Toilet seat lighting apparatuses

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009100560A1 (zh) * 2008-01-31 2009-08-20 Dingguo Pan 变截面不等边直角三角形棱镜圆盘形反光板和用它制成的灯具

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GB1021159A (en) * 1963-11-18 1966-03-02 Lucas Industries Ltd Lamps
US4713738A (en) * 1986-08-15 1987-12-15 Davis Charles S Light fixture using a holographic optical reflector
EP0364228A2 (de) * 1988-10-11 1990-04-18 Minnesota Mining And Manufacturing Company Leuchtvorrichtung
DE4421306A1 (de) * 1993-06-24 1995-01-05 Koito Mfg Co Ltd Fahrzeugbeleuchtungsvorrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1021159A (en) * 1963-11-18 1966-03-02 Lucas Industries Ltd Lamps
US4713738A (en) * 1986-08-15 1987-12-15 Davis Charles S Light fixture using a holographic optical reflector
EP0364228A2 (de) * 1988-10-11 1990-04-18 Minnesota Mining And Manufacturing Company Leuchtvorrichtung
DE4421306A1 (de) * 1993-06-24 1995-01-05 Koito Mfg Co Ltd Fahrzeugbeleuchtungsvorrichtung

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0886101A3 (de) * 1997-06-19 2000-11-02 C.R.F. Società Consortile per Azioni Leuchte für Kraftfahrzeuge
WO1999000623A1 (en) * 1997-06-30 1999-01-07 Donnelly Corporation Automotive lamp lens and lamp system utilizing diffractive optics and method for making the same
EP0933587A2 (de) 1998-01-30 1999-08-04 Hella KG Hueck & Co. Stabförmiger Lichtleiter
EP0974485A3 (de) * 1998-07-24 2001-04-25 Stanley Electric Co., Ltd. Signalleuchte für Fahrzeuge
US6582110B1 (en) 1999-08-11 2003-06-24 Automotive Lighting Italia Spa Motor-vehicle light
EP1079172A1 (de) * 1999-08-11 2001-02-28 Automotive Lighting Italia Spa Kraftfahrzeugleuchte
KR20010049945A (ko) * 1999-10-21 2001-06-15 모치마루 마모루 소형광원모듈
EP1152187A3 (de) * 2000-05-02 2002-11-13 C.R.F. Società Consortile per Azioni Beleuchtungseinrichtung
EP1376008A2 (de) * 2000-05-02 2004-01-02 C.R.F. Societa Consortile per Azioni Beleuchtungseinrichtung
EP1376008A3 (de) * 2000-05-02 2004-01-28 C.R.F. Societa Consortile per Azioni Beleuchtungseinrichtung
DE10022779A1 (de) * 2000-05-10 2001-11-15 Hella Kg Hueck & Co Stabförmiger Lichtleiter
DE10022780A1 (de) * 2000-05-10 2001-11-15 Hella Kg Hueck & Co Stabförmiger Lichtleiter
EP2258978A3 (de) * 2000-11-29 2015-09-23 Zumtobel Lighting GmbH Leuchte mit einer lichtdurchlässigen Scheibe
EP1258395A3 (de) * 2001-05-18 2005-07-20 C.R.F. Società Consortile per Azioni Beleuchtungseinrichtung insbesondere für Fahrzeuge oder Notlicht
FR2829225A1 (fr) 2001-09-05 2003-03-07 Automotive Lighting Reutlingen Bloc optique
DE10247980B4 (de) * 2002-10-15 2011-05-26 Automotive Lighting Reutlingen Gmbh Fahrzeugleuchte
FR2906009A1 (fr) * 2006-09-19 2008-03-21 Valeo Vision Sa Dispositif d'eclairage et/ou de signalisation pour vehicule automobile.
DE102007020397B8 (de) * 2007-04-27 2012-08-30 Bombardier Transportation Gmbh Beleuchtungsvorrichtung für die Beleuchtung von Fahrzeuginnenräumen
DE102007020397B4 (de) * 2007-04-27 2012-06-21 Bombardier Transportation Gmbh Beleuchtungsvorrichtung für die Beleuchtung von Fahrzeuginnenräumen
CN101459799B (zh) * 2007-12-14 2013-02-20 三星电子株式会社 投影型显示设备及其显示方法
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US8616736B2 (en) 2008-08-26 2013-12-31 Dingguo Pan Circular light-reflecting plate with triangular oriented prisms having identical cross section and circular plate lamp made therefrom
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CN102859272A (zh) * 2010-04-30 2013-01-02 潘定国 微棱镜导光板及其制造方法、及其制成的片灯、片灯具
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CN106287485B (zh) * 2015-06-29 2018-12-14 Zkw集团有限责任公司 光导体装置、照明机构和机动车大灯
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EP0766037B1 (de) 2003-02-05
ES2189846T3 (es) 2003-07-16
IT1281366B1 (it) 1998-02-18
ITTO950771A1 (it) 1997-03-27
DE69626078T2 (de) 2003-11-13
DE69626078D1 (de) 2003-03-13
ITTO950771A0 (it) 1995-09-27

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