EP0678703A1 - Lampe pour véhicule automobile comprenant un réflecteur à bombements réfléchissant - Google Patents

Lampe pour véhicule automobile comprenant un réflecteur à bombements réfléchissant Download PDF

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Publication number
EP0678703A1
EP0678703A1 EP95104631A EP95104631A EP0678703A1 EP 0678703 A1 EP0678703 A1 EP 0678703A1 EP 95104631 A EP95104631 A EP 95104631A EP 95104631 A EP95104631 A EP 95104631A EP 0678703 A1 EP0678703 A1 EP 0678703A1
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EP
European Patent Office
Prior art keywords
light
reflector
lenses
motor vehicles
hereinbefore
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
EP95104631A
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German (de)
English (en)
Other versions
EP0678703B1 (fr
Inventor
Giuliano Cossetti
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
Seima Italiana SpA
Automotive Lighting Rear Lamps Italia SpA
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Filing date
Publication date
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Application filed by Seima Italiana SpA, Automotive Lighting Rear Lamps Italia SpA filed Critical Seima Italiana SpA
Publication of EP0678703A1 publication Critical patent/EP0678703A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
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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
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • 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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/19—Attachment of light sources or lamp holders
    • 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
    • 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

Definitions

  • This invention concerns a light with lens-bearing reflector for motor vehicles, as set forth in the main claim.
  • the light according to the invention employs as its luminous sources common lamps of a type with an incandescent filament which cooperate with a reflector associated with an outer transparent element.
  • the state of the art commonly employs lighting devices and luminous signalling devices, which include a plurality of specific compartments for the individual functions and which employ concentrated luminous sources consisting of incandescent lamps.
  • These devices differ from each other by the specific functions which they are called upon to perform on the motor vehicle, so that they can be divided at least into lighting devices, which can be identified as front headlights, and signalling devices, which are substantially grouped together in the tail lights.
  • the lighting devices or front headlights have the purpose of concentrating their light in well defined areas on the road in front of the vehicle, and their main purpose is to illuminate but not to be looked at since the light which they emit is, by definition, dazzling or at least very strong.
  • headlights have to illuminate in a homogeneous manner a desired surface at a desired distance and deliver a luminous beam of many hundreds or thousands of "cd" .
  • the signalling devices instead, are normally grouped in the tail lights and have the purpose of providing specific information for other users of the road who are normally in a rear position.
  • the lighting devices have to meet parameters relating to a minimum value of emitted luminous intensity
  • the signalling devices have to meet parameters relating to minimum and maximum values of emitted luminous intensity since their individual signalling functions have to be able to be observed even for long periods by a user who is in a rear position without that user becoming disturbed.
  • the lights which perform the same function differ from each other only as regards their shapes, which are specific for each vehicle, and as regards the distribution of the functions and therefore of the specific colours within a light.
  • One embodiment has already been applied which provides for the use of a light equipped with a plurality of continuous parallel cylindrical lenses positioned on the reflector, the luminous beam of which is defined in cooperation with a plurality of continuous cylindrical lenses positioned at a right angle to those on the reflector but provided on the outer transparent element.
  • This embodiment has given satisfactory results to the extent that it is considered as a reference point by stylists from the point of view of the transparency, even if it involves an evident lack of homogeneity when the lamp is lit.
  • Some embodiments are also known which are provided above all on the mini floodlights equipped with halogen lamps and employed to light up show cases, displays, shop windows, etc., in which flat or curved facets have been provided on the reflecting surface of the parabolic reflector and have the main purpose of creating a diverging luminous beam which illuminates the objects or environment in a homogeneous manner.
  • An analogous embodiment has also been applied to the front headlights of motor vehicles by providing on the inner surface of the reflector zones or strips which are directed in such a way as to reflect the light coming from the lamp in very precise directions.
  • a rear signalling function requires instead that the whole surface of the specific compartment should be illuminated in a homogeneous enough manner in every direction of observation within the horizontal and vertical angles of visibility laid down by the regulations, while providing at the same time the photometric services distributed according to a determined curve within the same field of visibility.
  • one of the characteristics which differentiate a front headlight substantially from a tail light is the solid angle which delimits the field of visibility of the emitted light and which, especially on the horizontal plane, is aligned on the reference axis and forms a total angle of about 20° for the front headlight, whereas it forms an angle of about 90° or more for a rear signalling function.
  • These luminous sources provide the ability of making signalling devices which, while ensuring the performance required by the regulations, provide the capability of obtaining new aesthetic effects with more homogeneous and brilliant illuminated surfaces by means of a plurality of punctiform luminous sources distributed, for instance, on a plurality of longitudinal and/or transverse lines.
  • the luminous sources provide a luminous flow which is about one quarter to one fifth of that of a traditional incandescent lamp.
  • the present applicants have therefore tackled the problem of embodying a luminous signalling device for motor vehicles which meets the aesthetic requirements of stylists and which provides, when switched off, an image of transparency and richness and, when switched on, a brilliant and homogeneous image over the whole field of visibility laid down by the regulations, and which uses traditional incandescent lamps as a luminous source.
  • the invention concerns a tail light for motor vehicles which has a modest cost and is characterised by an optical and aesthetic effect which can be likened to that achieved by using a plurality of punctiform or almost punctiform luminous sources of a light-emitting diode type or miniaturised type, for instance.
  • the tail light according to the invention has a luminous source consisting of an incandescent filament lamp positioned in cooperation with a reflector.
  • the reflecting part of the reflector for each single function included in the tail light is defined by a plurality of small surfaces having very various forms and dimensions and defined here, for the sake of simplicity and brevity, as lenses suitable to combine in a figure the presence of a mated plurality of luminous sources, thus achieving the desired optical effect.
  • These lenses may be concave or convex and their geometry has been planned so that every apparent luminous image has a desired luminous intensity, as regards quantity and distribution, in the specific working area.
  • these lenses may be provided on the inner or front surface of the reflector or on the outer or rear surface of the reflector.
  • the reflector will therefore be made of a transparent material.
  • the concave shape of the reflector may be of a parabolic type but can also take on any different shape, seeing that it acts only as a support for the single reflecting surfaces or lenses, which are calculated individually as regards shapes and sizes.
  • This reflector is associated with an outer transparent element, which either has the normal specific colours, or a component of those colours, for the individual functions, such as red for the position light, the stop light and the rear fog light, or else orange for the direction indicator lights, or colourless for the reversing lights, or is of an obscured type, in which case the colours of its particular signalling function can be seen only when the light is switched on.
  • the outer transparent element is advantageously, but not necessarily, smooth so as to heighten the transparency, richness and depth provided by the inner reflector.
  • Lines or other decorations may also be included to personalise and/or give a special finish but do not modify the transparency or photometric performance.
  • the lenses are arranged on the reflecting surface of the reflector and are aligned in parallel and/or radial rows in relation to the longitudinal axis of the light.
  • the lenses occupy determined circular sectors on circumferences or parts of circumferences concentric with the lamp.
  • the lenses can be aligned according to the outer profiles of the individual compartments or specialised sectors for the specific functions included in the tail light.
  • the individual lenses can take up the whole sector individually allotted to them and provided by dividing the reflector into a plurality of determined sectors or can have a configuration delineated within their specific sector.
  • the lenses can be embodied on the reflecting surface of the reflector with a radially constant distance between centres or, according to a variant, with a distance between centres which is variable progressively or in steps from the centre towards the periphery for the purpose of achieving a desired image for each single lens.
  • the variability of the distance between centres of the lenses can affect only one axis of the reflector or both axes thereof.
  • the variability of the distance between centres of the lenses can be continuous and progressive along the axis or axes of the reflector or can concern groups of lenses placed side by side, each group including within itself two or more lenses arranged with a constant distance between centres.
  • the ability to vary the distance between centres can be defined in a radial direction.
  • the lens can be spherical, toroidal, toroidal-elliptic or embodied according to a complex curve.
  • Spherical lenses made with substantially equal generating radii measured on the planes containing the axes "x" and “y” of the specific sector are used when it is desired that the distribution of the luminous rays performed by the individual lens should be uniform on the plane of the axis "x” and on the plane of the axis "y” .
  • Toroidal lenses which are made with the two generating radii measured respectively on the planes of the axes "x" and “y” of the specific sector and having different values are used when it is desired to obtain a uniform but differentiated distribution between the two containing planes "x" and “y” .
  • Toroidal-elliptic lenses which are made with elliptic generating lines on the plane of the axis "x" and on the plane of the axis "y” are used when it is desired to obtain a gaussian luminous distribution concentrated at about the reference axis of the lens but with also the sides of the lens affected at the same time according to desired values.
  • the ellipses may have radii at the sides, relating respectively to the plane "x" and plane “y” , which are equal to each other, while the central radius relating to those planes will be equal or different according to the desired distribution of the light on the two planes.
  • the radii too at the sides of the lens may be different from each other according to the desired optical effect.
  • Lenses having complex surfaces determined with a computer by means of specific calculation and simulation programs are used when it is desired to achieve special effects or when the lenses are placed in a particular position in relation to the luminous source.
  • the reflecting surfaces are suitably treated with varnishes based on aluminium or are metallized under vacuum for the purpose of increasing the reflecting power and of providing the tail light with a rich and brilliant appearance.
  • a tail light 10 for motor vehicles shown as regards one of its functions comprises a container body 11 with a reflector 12 closed at its front by an outer transparent element 13.
  • the outer transparent element 13 is made of a plastic material of the colour, or of a component of that colour, laid down in the regulations for the function which it has to perform or else is of an obscured type.
  • the outer transparent element 13 is advantageously smooth so as to enhance the transparency, richness and depth provided by the inner reflector 12.
  • the container body 11 has undergone an inner surface metallisation treatment to enhance the reflecting power of the reflector 12.
  • An incandescent lamp 14 cooperates within the reflector 12 and is fitted to a lamp-holder 15, which normally holds also the lamps employed for other functions of the tail light 10.
  • the lamp-holder 15 is solidly fixed to a part of the reflector 12, and this part possesses the same characteristics as the remaining part of the reflector 12 so that the normal dark halo is not generated about the lamp 14, but there is a clear continuity.
  • the lamp-holder 15 which may hold one lamp or a plurality of lamps, has a reflecting part 212, which is a continuation of the reflector 12 and itself too includes lenses 16. This has the result that there is no lack of optical continuity.
  • a plurality of lenses 16 are included on the reflector 12 and are suitable to ensure a distribution of the luminous beam emitted by the filament of the incandescent lamp 14 according to the angles of visibility laid down in the regulations for the specific function to be performed.
  • These lenses 16 may cover the whole surface of the reflector 12 without a break in continuity.
  • These lenses 16 may provided on the inner or front part of the reflector 12 as in the case shown in Fig.2 or in the case of the righthand part of Fig.4.
  • the lenses 16 are provided on the outer or rear part of the reflector 12, which in this case is made of a transparent material.
  • the metallisation treatment if included, is applied to the outer surface, referenced with 12a, of the reflector 12, and this metallisation, owing to its transparency, increases the reflecting capability of the reflector 12 towards the inside of the tail light 10.
  • the transparent material of which the reflector 12 consists may be colourless or may have the specific colour of the individual function of the specific sector.
  • this transparent material of the reflector 12 is made of a colour which is a component of the colour of the specific function, the other component thereof being present on the outer transparent element 13.
  • the plurality of lenses 16 bring about the formation of a plurality of substantially punctiform apparent images, or luminous zones 19, thus providing the optical effect of independent luminous sources distributed over the whole surface of the specific function performed by that specific sector of the tail light 10.
  • the geometry of the lenses 16, which may be concave or convex lenses 16 according to the optical effect desired, is such as to achieve a substantially constant luminous intensity for each luminous zone 19 subtended by the various lenses 16.
  • the lenses 16 are distributed on longitudinal and transverse lines on the reflector 12.
  • the lenses 16 have a variable pitch "p" , which increases from the centre towards the periphery of the reflector 12; this configuration enables the presence of luminous images 19 distributed lengthwise with a substantially constant distance between centres "k" to be obtained on the outer transparent element 13.
  • the lenses 16 are distributed on the surface of the reflector 12 with a constant pitch "p" on the horizontal plane, whereas they are distributed with a variable pitch "p" on the vertical plane.
  • the pitch "p" can be made variable also along the vertical plane of the device according to the form of the individual compartment or specialised sector of the tail light 10.
  • each lens 16 has a section of an elliptic-toroidal conformation.
  • the lenses 16 Owing to their elliptic conformation the lenses 16 have a big radius "R" at the central part of the lens 16 and small radii "r" at their sides. This arrangement enables more light to be sent in the direction of the reference axis 20a and less light towards the limits of the field of visibility.
  • the radii relating to the vertical plane are greater than, and/or, in any event, different from those relating to the horizontal plane.
  • the outermost lenses 16 positioned at the periphery of the reflector 12, such as the lens 16b for instance, can be rotated towards the centre of the reflector 12, thus obtaining a reference axis 20b as shown with a line of dashes in the figure, so as to prevent the reflected rays remaining unused owing to the closeness of the containing walls 11 of the reflector 12.
  • Fig.5 shows a three-dimensional view of a portion of the parabolic reflector 12, on which are convex lenses 16 formed in such a way that the intersection between one lens 16 and the adjacent lenses produces a form of the luminous image 19 which, when seen from the front, can be likened to a square or rectangle.
  • the form of the lenses 16 can be changed and made like other polygonal geometric shapes such as, for instance, a lozenge, hexagon, etc., as shown in Fig.6 for example.
  • the lenses 16 are distributed on circumferences or parts of circumferences concentric with the lamp 14.
  • the single lenses 16 always possess that specific conformation (spherical, toroidal, toroidal-elliptic, complex curve) required for the desired distribution of light.
  • the lenses 16 therefore have at their horizontal and vertical sections specific radii such that they deflect the luminous rays according to pre-arranged angles.
  • the conformation of the lenses 16 according to the invention has to comply with not only the regulations but also an energy requirement and an aesthetic requirement.
  • the light reflected by the lenses 16 in the immediate vicinity of the lamp 14 is greater than that reflected by the more distant lenses 16; because of this, the curves of the lenses 16 in the horizontal and vertical directions are altered from the centre of the light towards the periphery of the same.
  • the lenses 16 can also be embodied on the reflecting surface of the reflector 12 in such a way that there are no points of contact between them as in the case of Fig.8 for instance; in this case the lenses 16 take up only part of the parabolic reflecting surface.
  • Fig.9 shows an embodiment in which the reflector 112 is of a stepped type and/or of a type having a reduced bulk as compared to the classic parabolic reflector, which is indicated with lines of dashes in the figure.
  • the inner surface of the reflector 112 is divided into a plurality of sectors or steps, each substantially parabolic, each of which is made to cooperate with a plurality of lenses 116 or with one single lens 116 affecting the whole step, so as to obtain the desired optical effect.
  • the individual lenses 116 are embodied advantageously according to complex curves, which differ from the lenses which would be formed if they were embodied directly on the allotted parabola portion of the surface of the reflector 112.
  • the incandescent lamp 14 is associated advantageously with a cap 117 (Fig.9) or frontal screen 17 (Fig.2 but not included in Fig.4 for convenience) placed in front of the lamp 14 itself so that from the normal positions of observation the filament cannot be seen.
  • the cap 117 or screen 17, if moulded of a transparent material, can also act as a possible filter for the orange/green/red etc. colours linked to the specific function of the specialised sector, if the latter covers the whole lamp 14.
  • the screen 17 or cap 117 may include a component of the colour of the specific function of the specialised sector, while the other component is provided on the outer transparent element 13.
  • frontal refraction lenses 18 can be embodied on the cap 117 or screen 17 so as to create in turn brilliant luminous zones, thus providing aesthetic continuity and homogeneity for the whole compartment.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)
EP95104631A 1994-04-20 1995-03-29 Lampe pour véhicule automobile comprenant un réflecteur à bombements réfléchissant Revoked EP0678703B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUD940064 1994-04-20
IT94UD000064A IT1267221B1 (it) 1994-04-20 1994-04-20 Fanale per autoveicoli con riflettore a lenti

Publications (2)

Publication Number Publication Date
EP0678703A1 true EP0678703A1 (fr) 1995-10-25
EP0678703B1 EP0678703B1 (fr) 1999-10-06

Family

ID=11421565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95104631A Revoked EP0678703B1 (fr) 1994-04-20 1995-03-29 Lampe pour véhicule automobile comprenant un réflecteur à bombements réfléchissant

Country Status (4)

Country Link
EP (1) EP0678703B1 (fr)
AT (1) ATE185412T1 (fr)
DE (1) DE69512556D1 (fr)
IT (1) IT1267221B1 (fr)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0780626A3 (fr) * 1995-12-22 1997-09-24 Zumtobel Licht Luminaire avec au moins une lampe et au moins un réflecteur et procedée de fabrication d'un réflecteur
DE19737550A1 (de) * 1996-09-18 1998-03-19 Valeo Vision Signalleuchte mit verbesserter Lampenabdeckung für Kraftfahrzeuge
FR2753522A1 (fr) * 1996-09-19 1998-03-20 Valeo Vision Feu de signalisation de vehicule automobile, comportant un miroir a paves deviateurs perfectionnes
FR2753776A1 (fr) * 1996-09-20 1998-03-27 Valeo Vision Feu de signalisation a miroir a surface a stries
EP0860652A3 (fr) * 1997-02-22 1999-02-24 Britax Vega Limited Lampe de signalisation pour véhicules
EP0822370A3 (fr) * 1996-08-02 1999-05-26 Koito Manufacturing Co., Ltd. Phare de véhicule
DE19820656A1 (de) * 1998-05-08 1999-11-11 Hella Kg Hueck & Co Mehrkammerleuchte für Fahrzeuge
EP0879989A3 (fr) * 1997-05-19 1999-12-01 Autopal S.R.O. Lampe pour véhicules automobiles
EP0922903A3 (fr) * 1997-12-11 2001-03-21 Stanley Electric Co., Ltd. Feu multifonction arrière pour véhicule
EP1089036A1 (fr) * 1999-09-30 2001-04-04 Automotive Lighting Italia Spa Réflecteur à surface complexe pour un dispositif d'éclairage d'un véhicule
FR2802284A1 (fr) * 1999-12-08 2001-06-15 Koito Mfg Co Ltd Lampe indicatrice de vehicule
US6796694B2 (en) 2000-05-17 2004-09-28 Koito Manufacturing Co., Ltd. Vehicular signal lamp
DE10237263B4 (de) * 2001-08-15 2007-06-14 Koito Manufacturing Co., Ltd. LED-Fahrzeugleuchte, die eine verbesserte Lichtverteilung besitzt
FR2896203A1 (fr) * 2006-01-18 2007-07-20 Peugeot Citroen Automobiles Sa Feu de signalisation a motifs catadioptriques pour vehicule automobile.
EP1650722A3 (fr) * 2004-10-21 2007-11-21 Kobishi Electric Co., Ltd. Système de signalisation et appareil d'avertissement
EP1894777A3 (fr) * 2006-09-01 2008-07-09 Hella KGaA Hueck & Co. Eclairage intérieur pour véhicules
EP1947382A1 (fr) 2007-01-19 2008-07-23 Valeo Vision Module d'éclairage ou de signalisation d'aspect amélioré
FR2916831A1 (fr) * 2007-05-29 2008-12-05 Valeo Vision Sa Module d'eclairage ou de signalisation d'aspect ameliore
EP2148131A1 (fr) 2008-07-21 2010-01-27 Valeo Vision Module d'éclairage ou de signalisation d'aspect tridimensionnel amélioré
CN102213395A (zh) * 2010-04-09 2011-10-12 王立义 一种光学反射罩
CN102305385A (zh) * 2011-09-27 2012-01-04 赵恒谦 光反射装置及路灯反射器
CN103133960A (zh) * 2011-11-24 2013-06-05 市光工业株式会社 车辆用前照灯
RU2575908C1 (ru) * 2014-09-24 2016-02-20 Открытое акционерное общество "АВТОВАЗ" Оптический прибор для транспортного средства
WO2016067175A1 (fr) * 2014-10-27 2016-05-06 Smr Patents S.A.R.L. Ensemble lampe pour véhicule
DE102012223584B4 (de) 2012-12-18 2018-08-02 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugleuchte
EP3472936B1 (fr) 2016-06-21 2020-07-08 Dr. Schneider Kunststoffwerke GmbH Dispositif comportant au moins une zone pouvant être éclairée

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US5980067A (en) * 1996-09-18 1999-11-09 Valeo Vision Indicator light for a motor vehicle, having a faceted reflector
JP3193889B2 (ja) * 1997-06-18 2001-07-30 株式会社小糸製作所 車輌用灯具
DE10156973A1 (de) * 2001-11-20 2003-05-28 Hella Kg Hueck & Co Fahrzeugleuchte
EP1671061A4 (fr) * 2003-09-16 2007-12-12 Vega Ind Ltd Ameliorations apportees a des feux a secteurs
EP2313800A4 (fr) 2008-07-10 2014-03-19 3M Innovative Properties Co Guide optique viscoélastique
US9285531B2 (en) 2008-08-08 2016-03-15 3M Innovative Properties Company Lightguide having a viscoelastic layer for managing light
DE102010027028B4 (de) * 2010-07-14 2016-06-02 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugbeleuchtungseinrichtung mit einem homogen Licht verteilenden Reflektor

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US4277821A (en) * 1976-06-24 1981-07-07 Sassmannshausen Knut Lamp
EP0290347A2 (fr) * 1987-05-07 1988-11-09 Valeo Vision Feu de signalisation économique à haut rendement, notamment pour véhicule automobile
EP0341996A2 (fr) * 1988-05-10 1989-11-15 Minnesota Mining And Manufacturing Company Réflecteur fresnel avec éléments à faces multiples
FR2639285A1 (fr) * 1988-11-22 1990-05-25 Carello Spa Procede pour la fabrication de feux pour vehicules
US4994947A (en) * 1989-11-20 1991-02-19 Ford Motor Company Reflector and lighting fixture comprising same
WO1992017733A1 (fr) * 1991-04-03 1992-10-15 Gte Products Corporation Ensemble lampe et reflecteur

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277821A (en) * 1976-06-24 1981-07-07 Sassmannshausen Knut Lamp
EP0290347A2 (fr) * 1987-05-07 1988-11-09 Valeo Vision Feu de signalisation économique à haut rendement, notamment pour véhicule automobile
EP0341996A2 (fr) * 1988-05-10 1989-11-15 Minnesota Mining And Manufacturing Company Réflecteur fresnel avec éléments à faces multiples
FR2639285A1 (fr) * 1988-11-22 1990-05-25 Carello Spa Procede pour la fabrication de feux pour vehicules
US4994947A (en) * 1989-11-20 1991-02-19 Ford Motor Company Reflector and lighting fixture comprising same
WO1992017733A1 (fr) * 1991-04-03 1992-10-15 Gte Products Corporation Ensemble lampe et reflecteur

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0780626A3 (fr) * 1995-12-22 1997-09-24 Zumtobel Licht Luminaire avec au moins une lampe et au moins un réflecteur et procedée de fabrication d'un réflecteur
EP0822370A3 (fr) * 1996-08-02 1999-05-26 Koito Manufacturing Co., Ltd. Phare de véhicule
DE19737550A1 (de) * 1996-09-18 1998-03-19 Valeo Vision Signalleuchte mit verbesserter Lampenabdeckung für Kraftfahrzeuge
FR2753522A1 (fr) * 1996-09-19 1998-03-20 Valeo Vision Feu de signalisation de vehicule automobile, comportant un miroir a paves deviateurs perfectionnes
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Also Published As

Publication number Publication date
EP0678703B1 (fr) 1999-10-06
ITUD940064A1 (it) 1995-10-20
ATE185412T1 (de) 1999-10-15
IT1267221B1 (it) 1997-01-28
DE69512556D1 (de) 1999-11-11
ITUD940064A0 (it) 1994-04-20

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