EP1947382A1 - Vorrichtung zur Beleuchtung oder Signalisierung mit verbessertem Aussehen - Google Patents

Vorrichtung zur Beleuchtung oder Signalisierung mit verbessertem Aussehen Download PDF

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Publication number
EP1947382A1
EP1947382A1 EP08100279A EP08100279A EP1947382A1 EP 1947382 A1 EP1947382 A1 EP 1947382A1 EP 08100279 A EP08100279 A EP 08100279A EP 08100279 A EP08100279 A EP 08100279A EP 1947382 A1 EP1947382 A1 EP 1947382A1
Authority
EP
European Patent Office
Prior art keywords
module according
reflector
foci
light source
lighting
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Withdrawn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
EP08100279A
Other languages
English (en)
French (fr)
Inventor
Ottavio-Henrique Reis
Whilk Goncalves
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.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
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
Priority claimed from FR0700388A external-priority patent/FR2911664B1/fr
Priority claimed from FR0703793A external-priority patent/FR2916831B1/fr
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP1947382A1 publication Critical patent/EP1947382A1/de
Withdrawn legal-status Critical Current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
    • F21V7/04—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
    • 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
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • 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
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • 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
    • 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
    • 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
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors

Definitions

  • the present invention relates to a lighting or signaling module, in particular for a motor vehicle, which has an improved appearance when it is turned on.
  • the invention finds particular applications in the field of motor vehicles, such as, for example, motorized two-wheelers, passenger cars, light commercial vehicles or heavy goods vehicles.
  • FR 2,627,256 a traffic light which essentially comprises a lamp provided with a filament, a rear reflector and a transparent deflection element placed in front of the lamp.
  • the rear reflector in cooperation with the actual light source, is designed to create, on a substantially horizontal line and, perpendicular to the general direction of emission or optical axis xx, a plurality of light sources, called virtual in this document, distributed equidistantly on this line.
  • the rear reflector is subdivided into a plurality of sections which have the shape of ellipsoids whose first focus is located on the filament and whose second focus is located at the location of the virtual sources.
  • the transparent deflection element arranged in front of the sources has a substantially constant vertical section, with which is associated a focal point and designed to deflect the light rays from said focal point vertically so that they propagate substantially parallel to a horizontal plane, this element being obtained by a displacement of said section such that the focal point substantially follows the line of the sources.
  • Such an arrangement is intended to provide a traffic light of large width relative to its height, such as a third brake light in the raised central position.
  • the deflection element arranged in front of the light sources has the function of acting on the angle of elevation of the rays diverging from the light sources, to bring it back to a value close to zero, while leaving practically unchanged their angle of repose. azimuth.
  • the reflector is designed so that each virtual source emits light rays forwards substantially in the same angular range, in a median horizontal plane, so that the entire illuminating surface of the light retains an appearance. homogeneous from where it is observed in this angular range.
  • the fire known from this document has a homogenous illuminated range, in which we no longer distinguish the light sources, and with which it is not possible to obtain particular aesthetic effects.
  • the reflector comprises a plurality of lenticular reflective elements each of which is provided with a convex or concave reflecting surface distributed in a substantially uniform manner on the surface of the reflector.
  • the reflective elements are arranged in lines, parallel horizontally and vertically, or radial to the longitudinal axis of the fire, or they occupy predetermined circular sectors on circumferences or portions of circumferences concentric with respect to the lamp.
  • the reflective elements described in this document have curved, convex or concave surfaces, whose radii of curvature in the horizontal and vertical directions are chosen independently of each other as a function of the desired luminous effect. Reflective elements are thus visible through a smooth closure glass, such as a conjugate plurality of light images.
  • Such an embodiment allows very little freedom to design the reflective elements, so that particular aesthetic or style effects can not be obtained.
  • This document provides only matrix or circular provisions for the reflective elements.
  • the reflective elements constituting the plurality of images obtained remain localized at the reflector, so that an observer located outside the transmission axis of the signaling beam perceives only a part of the plurality images.
  • the rows of reflective elements constituting the reflector must be oriented in predetermined directions, which creates zones of shadows in a front view of the fire.
  • the invention is placed in this context and its purpose is to overcome the disadvantages of the techniques described above by proposing a lighting or signaling module, comprising a main light source, but whose illuminated aspect is that of a module having a plurality of apparent light sources, the intensity of each of the apparent sources being adjustable to any predetermined value, the position of each of the apparent sources also being freely selectable so that predetermined patterns can be formed, the apparent sources being visible under relatively large viewing angles, the luminous flux of all apparent sources responding to the regulation of the lighting or signaling function filled by this lighting or signaling module.
  • the present invention proposes a lighting or signaling module for the emission of a lighting or signaling beam in a main direction, of the type comprising a light source, a light flux recuperating mirror comprising a reflector block assembly, each reflector block consisting of a conical two-focus portion having a first focus on the light source and a second focus of the reflector block in a specific direction relative to the direction main, each reflector block forming an image of the light source.
  • the parameters of the conical portions with two foci constituting the reflector blocks are adjusted to give the second foci predetermined photometric characteristics, and the images of the light source are directly visible.
  • the invention also relates to a lighting or signaling device, characterized in that it comprises at least two lighting or signaling modules.
  • a motor vehicle signaling light which comprises a light source 11, a flux recovery mirror 20 and a closing window 30, for emitting a lighting or signaling beam in a main direction XX.
  • the light source 11 can be constituted, as shown on the Figures 1 to 3 by the filament 11 of an incandescent lamp 10, or by a light-emitting diode.
  • the crystal 30 is essentially smooth, that is to say that it does not include any optical element significantly affecting the path of the light rays that pass through it.
  • the mirror 20 is formed of a set of reflector blocks 201, 202, ..., 20i, 20j, contiguous or not.
  • Each block 20i, 20j consists of a conical portion with two foci, the first focus of which is located on the filament 11.
  • each pad 20i, 20j consists of an ellipsoid portion, the second focus Fi, Fj is located forward of the pad 20i, 20j, in a specific direction Xi-Xi, Xj-Xj.
  • each block 20i, 20j consists of a portion of hyperboloid, the second focus ⁇ i, ⁇ j is located behind the pad 20i, 20j, in a specific direction Xi-Xi, Xj-Xj.
  • the direction Xi-Xi, Xj-Xj may be parallel to the main direction XX passing through the center of the pad 20i, 20j, as shown on the Figures 3 and 4 . It can also be inclined on this axis XX. This last case may occur when it is desired to emit light rays in given directions, for example to satisfy a regulatory photometric grid, or to avoid an obstacle that could be in the path of these light rays, for example a light. internal wall of the lighting or signaling device in which the module according to the invention is installed.
  • each second focus Fi, Fj constitutes a real image of the source 11.
  • each second focus ⁇ i, ⁇ j constitutes a virtual image of the source 11.
  • the second foci Fi, Fj or ⁇ i, ⁇ j may be located in the same plane perpendicular to the main axis X-X, or they may be distributed freely in space, depending on the aspect that is to be conferred to the module on. Indeed, the spatial arrangement of the second foci Fi, Fj or ⁇ i, ⁇ j with respect to the closure glass 30, when they are not coplanar, also gives an impression of depth and relief to the module when it is lit.
  • each reflector pad 20i, 20j forms a real image Fi, Fj, or virtual ⁇ i, ⁇ j visible through the glass 30 smooth or weakly deviating.
  • the mirror 20 comprises reflector blocks 20i, 20j some of which are portions of ellipsoids whose second foci Fi, Fj are located in front of the mirror 20 and some of which are portions of hyperboloids whose second foci ⁇ i, ⁇ j are located behind the mirror 20.
  • Such an embodiment allows even more flexibility in the design of the mirror 20 according to the appearance that is desired to give the module when lit.
  • the reflector blocks 20a, 20b can be formed on a mirror 20 as shown in FIGS. Figures 5 and 6 . These blocks are formed on concentric circles so that their centers are evenly spaced on these circles. As a result, the real images Fa, Fb and / or virtual ⁇ a, ⁇ b of the filament 11 will also be evenly distributed over concentric circles, as can be seen in FIG. Figure 9 , if these real images are located on axes Xi-Xi, Xj-Xj parallel to the main direction XX.
  • the real images Fa, Fb and / or virtual ⁇ a, ⁇ b can also be distributed according to a completely different configuration, without any symmetry constraint, by choosing appropriate inclinations for the axes X i -X i , X j -X j with respect to the XX axis.
  • each reflective block 20i, 20j under a solid angle ⁇ i, ⁇ j different.
  • the dimensions of each reflector pad 20i, 20j it will be possible to determine the amount of light reflected by each pad and reaching each real image Fi, Fj or appearing to come from each virtual image ⁇ i, ⁇ j.
  • the reflector blocks 20k on the mirror 20 as has been shown on the Figures 7 and 8 , regularly distributed along a spiral.
  • the real images Fk or virtual ⁇ k of the filament 11 will also be regularly distributed on a spiral, as can be seen on the diagram. Figure 10 .
  • the blocks 20k In such a way that the images Fk or ⁇ k have similar intensities, it will be possible for the blocks 20k to have increasing dimensions as a function of their distance to the filament 11, as has been shown in FIGS. Figures 7 and 8 .
  • Figure 16 shows that depending on the parameters of the hyperboloid surfaces constituting the reflector blocks 20i, the light rays will diverge from the virtual image ⁇ i under a solid angle ⁇ i, making this image ⁇ i visible for an observer located in the solid angle ⁇ i around the middle direction X-Xi.
  • the position of the two focal points of each ellipsoid or hyperboloid is known: the first focus is on the filament 11 of the lamp 10, and the second focus Fi or ⁇ i are located at the locations where it is desired to place the real or virtual images of the filament 11, that is to say on the axes Xi-Xi, parallel or otherwise to the axis XX.
  • the origin of the orthonormal reference is located in the middle of the segment joining the two foci, one of the axes passes through the two foci, and the other two axes are perpendicular to the first axis and perpendicular to each other.
  • each reflector block can thus be designed so that it sends light rays in predetermined directions, whether to increase the visibility of the lighting or signaling module or to satisfy a regulatory photometric grid.
  • this solid angle ⁇ i it will be possible to determine the value of this solid angle ⁇ i, and therefore the angle at which all the images Fi or ⁇ i will be visible.
  • reflector blocks 20 i it is possible to make reflector blocks 20 i so that they remain perfectly visible for an observer located in a direction at an angle of about 20 degrees with respect to the main direction XX.
  • the ice 30 comprises deflector elements 40. More specifically, the deflection elements 40i, 40j are arranged in front of the reflector blocks 20i, 20j on the axes Xi-Xi, Xj -Xj, whether or not these axes are parallel to the main axis XX. They consist of dioptric elements, convergent or divergent, and they are substantially focused on real images Fi or virtual ⁇ i. They therefore form at their output light beams that can be substantially parallel, convergent or divergent to give a particular appearance to the module and / or to obtain a predetermined photometry.
  • the ice 30 may comprise both smooth zones through which the real images Fi, Fj and / or virtual ⁇ i, ⁇ j of the light source 11 will be directly visible, and zones 40 comprising deviating elements, for example dioptric elements or diffusing elements.
  • This device 50 may be a concealer intended to hide the primary source 11, so that an observer can see only the real or virtual images of this primary source. It may also consist of a retro-reflector, reflecting forward the light rays that reach it, for example from other vehicles' lighting devices, so that the module according to the present invention, in addition to its function of lighting or signaling, also fulfills this function of regulatory signaling.
  • a lighting or signaling module having a single light source and whose illuminated aspect is that of a module comprising a multitude of light sources has been well realized.
  • the position of each of these sources may be defined to form any geometric patterns, the intensity of the sources being adjustable to any predetermined value. We have seen that these choices are possible without having to use dioptric elements, generating loss of light.
  • the luminous efficiency of the module according to the invention is therefore optimal.
  • the ellipsoidal and / or hyperboloidal surfaces allow a better recovery of the luminous flux emitted by the primary source than in the case of paraboloidal surfaces. Since the reflector mirror is constructed from portions of ellipsoids and / or hyperboloids, the possible discontinuities between these different portions are much smaller than those which would be generated by multifocal paraboloidal surfaces.
  • the lighting or signaling module which has just been described may thus be used alone to carry out a regulatory function of lighting or signaling, such as taillight, brake light, change of direction indicator or reversing light. Lighting or signaling devices may also be made using several modules.
  • FIG. 13 a device performing for example the functions of combined position light / brake light. It uses for this purpose two cavities A and B, each corresponding to a module as described above. These cavities comprise mirrors 20 and 20 'respectively, each comprising reflector blocks 20 i , not shown so as not to overload the drawing.
  • the reflector blocks of the cavity A cooperate for example with 10 A lamp with two filaments 11 A and 11 ', for example a standardized lamp P21 / 5W
  • the reflector blocks of the cavity B cooperate for example with a lamp 10 B to a filament 11 B , for example a standard lamp R5W.
  • the position light function is ensured by the simultaneous ignition of the filaments 11 ' A and 11 B , which have the same power of 5 Watts, and the stop light function is ensured by the ignition of the filament 11 A , a power of 21 Watts.
  • the light sources used are light-emitting diodes 11 1 , 11 2 , 11 3 and 11 4 , and cooperate with the reflector blocks 20 1 , 20 2 , 20 3 and 20 4 of four reflectors in this embodiment. It is thus possible to obtain an entirely new aspect signaling function.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP08100279A 2007-01-19 2008-01-09 Vorrichtung zur Beleuchtung oder Signalisierung mit verbessertem Aussehen Withdrawn EP1947382A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0700388A FR2911664B1 (fr) 2007-01-19 2007-01-19 Module d'eclairage ou de signalisation d'aspect ameliore
FR0703793A FR2916831B1 (fr) 2007-05-29 2007-05-29 Module d'eclairage ou de signalisation d'aspect ameliore

Publications (1)

Publication Number Publication Date
EP1947382A1 true EP1947382A1 (de) 2008-07-23

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EP08100279A Withdrawn EP1947382A1 (de) 2007-01-19 2008-01-09 Vorrichtung zur Beleuchtung oder Signalisierung mit verbessertem Aussehen

Country Status (5)

Country Link
US (1) US8096690B2 (de)
EP (1) EP1947382A1 (de)
JP (1) JP5295573B2 (de)
AR (1) AR064959A1 (de)
BR (1) BRPI0800230A (de)

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FR2934031A1 (fr) * 2008-07-21 2010-01-22 Valeo Vision Sas Module d'eclairage ou de signalisation d'aspect tridimensionnel ameliore
US8096690B2 (en) 2007-01-19 2012-01-17 Valeo Vision Light module for signaling
WO2014170520A1 (es) * 2013-04-19 2014-10-23 García Rodríguez Lucas Reflector de revolución con micro-estructuras superficiales complejas

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US10113711B2 (en) * 2013-11-20 2018-10-30 Nova Measuring Instruments Ltd. Assembly for producing a plurality of beam bundles
US20150330600A1 (en) * 2014-05-13 2015-11-19 3M Innovative Properties Company Reflector
CN205244911U (zh) * 2015-03-12 2016-05-18 浚洸光学科技股份有限公司 照明装置及其光学构件
WO2017218555A1 (en) * 2016-06-13 2017-12-21 Flex-N-Gate Advanced Product Development, Llc Lit image projection devices and lamp assemblies containing the same for generation of three dimensional images
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GB2040431A (en) * 1978-12-20 1980-08-28 Zeiss Jena Veb Carl Illumination system for photo-copying devices
FR2627256A1 (fr) 1988-02-15 1989-08-18 Cibie Projecteurs Feu de signalisation a plage eclairante large et homogene pour vehicule automobile
EP0678703A1 (de) 1994-04-20 1995-10-25 Automotive Lighting Rear Lamps Italia S.p.A. Kfz-Leuchten-Reflektor mit einer Vielzahl von gewölbten Reflexionsflächen
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8096690B2 (en) 2007-01-19 2012-01-17 Valeo Vision Light module for signaling
FR2934031A1 (fr) * 2008-07-21 2010-01-22 Valeo Vision Sas Module d'eclairage ou de signalisation d'aspect tridimensionnel ameliore
EP2148131A1 (de) * 2008-07-21 2010-01-27 Valeo Vision Fahrzeugscheinwerfer mit einem verbesserten plastischen Aspekt
US8353607B2 (en) 2008-07-21 2013-01-15 Valeo Vision Lighting or signaling module with improved three-dimensional appearance
WO2014170520A1 (es) * 2013-04-19 2014-10-23 García Rodríguez Lucas Reflector de revolución con micro-estructuras superficiales complejas

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US20080175015A1 (en) 2008-07-24
JP5295573B2 (ja) 2013-09-18
JP2008177166A (ja) 2008-07-31
US8096690B2 (en) 2012-01-17
BRPI0800230A (pt) 2008-09-02

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