EP0549423A1 - Abdeckscheibe einer optischen Einrichtung für Signalleuchte, die mit pseudo-katadioptrischen Elementen versehen ist - Google Patents

Abdeckscheibe einer optischen Einrichtung für Signalleuchte, die mit pseudo-katadioptrischen Elementen versehen ist Download PDF

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Publication number
EP0549423A1
EP0549423A1 EP92403444A EP92403444A EP0549423A1 EP 0549423 A1 EP0549423 A1 EP 0549423A1 EP 92403444 A EP92403444 A EP 92403444A EP 92403444 A EP92403444 A EP 92403444A EP 0549423 A1 EP0549423 A1 EP 0549423A1
Authority
EP
European Patent Office
Prior art keywords
pseudo
catadioptric
elements
light
glass
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
EP92403444A
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English (en)
French (fr)
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EP0549423B1 (de
Inventor
André Duneau
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
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Valeo Vision SAS
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Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP0549423A1 publication Critical patent/EP0549423A1/de
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Publication of EP0549423B1 publication Critical patent/EP0549423B1/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
    • 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

Definitions

  • the present invention relates generally to signaling lights, in particular for motor vehicles, of which a window (or globe or even indicator) is equipped with pseudo-catadioptric elements and if necessary catadioptric elements.
  • the term "pseudo-reflector” or “pseudo-retro-reflective element” means an optical element which has an aspect close to that of a true reflector, without having the function of retro-reflection.
  • a conventional catadioptric element or "needle” 10 formed, for example in a traffic light glass, consists of an essentially planar face of light entry and exit, situated on the side outside of the glass, and of three flat surfaces 14a-14c arranged in a tri-rectangle trihedron, located on the inside of the glass and intended to retro-reflect, by total reflection on each of the faces, the incident light oriented in a direction close to the longitudinal axis of the element.
  • the angle ⁇ defined by the faces of the trihedron two by two is equal to 90 °, and these faces tangent a cone whose half-angle at the apex ⁇ is equal to 35 ° 15 ' .
  • a well-known pseudo-catadioptric element 20 is shown in FIG. 2.
  • the faces 24a-24c of the trihedron form an angle ⁇ ′ different from 90 °, and for example of the order of 92 °, and the half-angle at the top ⁇ 'is worth for example 36 ° 25', so that the retro-reflection function is no longer ensured, while the element retains, when the fire is extinguished, an appearance completely similar to that of a real catadioptric element.
  • Another known solution for producing a pseudo-reflector consists in retaining the geometry of the retro-reflecting element of FIG. 1, by etching the faces 14a-14c to remove the total reflection thereon.
  • the pseudo-catadioptric elements described above have the drawback of not letting the light emitted from inside the light pass, the latter therefore not being able to participate in the signaling beam to be formed.
  • FIG. 3 A known solution to this problem of loss of light is shown in FIG. 3. It consists in providing, on the inside of the glass G of the light, an intermediate screen E which comprises lenses L or the like intended to concentrate the majority of the light coming from the source or from a reflector in the direction of zones 30 of the ice which are not treated as pseudo-reflectors, and which are capable of letting the light pass.
  • an intermediate screen E which comprises lenses L or the like intended to concentrate the majority of the light coming from the source or from a reflector in the direction of zones 30 of the ice which are not treated as pseudo-reflectors, and which are capable of letting the light pass.
  • the first object of the present invention is to provide a lens comprising pseudo-catadioptric elements which are extremely simple and economical to produce.
  • a lens for at least one signaling light in particular for a motor vehicle, characterized in that it comprises, in at least one zone, a plurality of pseudo-catadioptric elements each having on the inside of the glass a conical end.
  • the apex angle of at least one group of pseudo-catadioptric elements is between approximately 110 and 165 °, preferably between 130 and 150 °, these elements allow the incident light to pass through said inner side of ice.
  • the angle at the apex of at least one group of pseudo-catadioptric elements is less than about 110 °, these elements at least partly obscure the light incident on said inner side of the glass.
  • the orientation of the axes of the conical ends can be varied from one pseudo-catadioptric element to another.
  • At least one group of pseudo-catadioptric elements is arranged in an elongated strip comprising one or more rows of said elements.
  • the lens comprises a plurality of elongated parallel pseudo-catadioptric bands each comprising one or more rows of pseudo-catadioptric elements alternating with a plurality of elongated bands for processing a light beam.
  • said elongated strips for processing a light beam each advantageously comprise a plurality of light scattering elements, and these elements preferably have an identical pitch or an integral multiple of a pitch of the pseudo-catadioptric elements said bands.
  • each conical end of a retro-reflecting element may be provided on a rib extending from the inside of the glass over at least part of the width of each pseudo-retro-reflecting strip.
  • this lens may comprise side by side at least a first region having a plurality of pseudo-catadioptric bands alternating with a plurality of elongated bands of treatment of a light beam and a second region having a plurality of retro-reflecting strips each comprising one or more rows of retro-reflecting elements and situated in alignment with said pseudo-retro-reflecting strips, alternating with a plurality of elongated treatment strips a light beam to emit.
  • the invention also relates to a signaling device for a motor vehicle, incorporating at least one signaling function, characterized in that it comprises a window as defined above.
  • a pseudo-catadioptric zone of a signal light lens G which comprises a set of pseudo-catadioptric elements 20 of hexagonal contours (these contours not being materialized in practice , the glass being in one piece) and whose geometric arrangement is that of a honeycomb.
  • the bottom face of each element, on the inside of the glass is defined by a cone, designated by the reference 26.
  • a pseudo-catadioptric element according to the invention proves to be extremely easy and economical to produce, since it suffices to form in the mold which will be used to make the blind hole glass with a drill with a conical top, in the appropriate locations.
  • Another advantage of the invention lies in the fact that a cadiatopter thus defined, by an appropriate choice of the angle at the top of the cone, can allow light to pass through. More precisely, a satisfactory passage of light is obtained for an apex angle of between approximately 110 and 165 °, preferably between approximately 130 and 150 °.
  • the orientation of the axis of each cone of pseudo-catadioptric element can be modified in order to effect a horizontal and / or vertical distribution of the light coming from the source in the light beam, thanks to the induced variation of the orientation of the refracted rays.
  • pseudo-catadioptric elements which let in little or no light.
  • vertex angles between about 70 ° and 110 ° are chosen for the cones; the light is almost completely obscured for apex angles less than or equal to about 78 °.
  • FIGs 6 and 7 partially illustrate a closing glass organized in relatively narrow bands alternately comprising pseudo-catadioptric elements (zones Z1) and elements for diffusing the light emitted by the source, or in certain cases without optical role, for example with parallel faces (zones Z2).
  • each strip Z1 comprises two horizontal rows of pseudo-catadioptric elements 20 arranged in staggered rows.
  • the strips Z2 comprise toric elements 50, that is to say cylindrical ridges of curved vertical profile, allowing the diffusion of the light emitted by the source horizontally and vertically.
  • each diffusion toroid 50 has a width equal to the width of an individual pseudo-catadioptric element.
  • the angle at the top of the cones is approximately 120 °, that is to say that they allow a very large proportion of the light received from the source to pass through, also performing a dispersion of it.
  • the outer face of the glass G is smooth to comply with the regulations.
  • diffusion elements 50 can take any suitable form such as cylindrical, toric, spherical, prismatic, etc.
  • FIGS 8 and 9 illustrate another concrete embodiment of the invention.
  • zones Z1 with pseudo-catadioptric elements and zones Z2 for light scattering.
  • Each zone in strip Z1 comprises a single row of pseudo-catadioptric elements 20 whose individual (intangible) contours are generally rectangular.
  • the elements 50 are again toroids, and have a width twice the width of the individual pseudo-catadioptric elements.
  • the width of the Z1 bands is slightly less than that of the Z2 bands.
  • the pitch of the diffusion elements 50 along the length of the strips alternating either identical or an integer multiple of the step of the pseudo-catadioptric elements.
  • FIG. 10 shows part of a window G of a block of rear vehicle signaling lights which comprises several regions R1 to R5 assigned for example to the following five light functions, respectively: reversing light, flashing light, rear fog light, position light and brake light.
  • suitable light sources in combination where appropriate with reflectors or lenses, are provided in association with each region.
  • the regions R1, R2, R3 and R5 are produced in the spirit of FIGS. 6 to 9, with Z1 bands constituted by pseudo-catadioptric elements 20 according to the invention alternating with Z2 bands composed of diffusion elements 50 light.
  • the region R4 corresponding to the position light comprises bands Z3 composed of true retro-reflecting elements 10, alternating with bands Z2 comprising elements 50 for scattering light.
  • the zones Z2 of the three regions R3 to R5 preferably all have the same width (which may also be the case of the zones Z2 of the regions R1 and R2), while the zones Z1 and Z3 also all have the same width. This gives a great homogeneity of appearance to the glass G in particular in its lower part, the zones Z3 of true retro-reflectors having practically the same appearance, when all the light functions are off, as the zones Z1 of pseudo-retro-reflectors.
  • the production of a mold part intended for manufacturing an ice cream according to the invention in series calls for the production of blind holes with a conical bottom for the pseudo-catadioptric elements.
  • a groove of rectangular section is made beforehand at the bottom of which the conical bottoms will then be made .
  • the presence of such a groove makes it possible to avoid direct intersections between the cones of the pseudo-catadioptric elements and the neighboring toric elements, which could cause it to be impossible to demold in highly inclined parts of the ice.
  • FIG. 8 in particular shows the straight lines D of transition between the zones Z1 and Z2, which correspond to the edges of the groove
  • FIG. 9 shows the ribs of rectangular section N corresponding to the grooves of the mold.
  • the same lens produced according to the invention may include pseudo-catadioptric elements of different designs in terms of angles at the top of the cones and of orientation of these cones. This is how certain pseudo-catadioptric elements allowing light to pass can coexist with other pseudo-catadioptric elements not allowing light to pass through.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Head (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Glass Compositions (AREA)
  • Optical Communication System (AREA)
  • Support Of Aerials (AREA)
EP92403444A 1991-12-20 1992-12-17 Abdeckscheibe einer optischen Einrichtung für Signalleuchte, die mit pseudo-katadioptrischen Elementen versehen ist Expired - Lifetime EP0549423B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9115916 1991-12-20
FR9115916A FR2685440B1 (fr) 1991-12-20 1991-12-20 Glace pour dispositif optique de signalisation equipee d'elements pseudo-catadioptriques.

Publications (2)

Publication Number Publication Date
EP0549423A1 true EP0549423A1 (de) 1993-06-30
EP0549423B1 EP0549423B1 (de) 1997-03-12

Family

ID=9420314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92403444A Expired - Lifetime EP0549423B1 (de) 1991-12-20 1992-12-17 Abdeckscheibe einer optischen Einrichtung für Signalleuchte, die mit pseudo-katadioptrischen Elementen versehen ist

Country Status (7)

Country Link
US (1) US5436762A (de)
EP (1) EP0549423B1 (de)
AT (1) ATE150157T1 (de)
BR (1) BR9205074A (de)
DE (1) DE69218162T2 (de)
ES (1) ES2100322T3 (de)
FR (1) FR2685440B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0637716A1 (de) * 1993-07-07 1995-02-08 Hella KG Hueck & Co. Lichtscheibe einer mehrere Lichtfunktionen aufweisenden Fahrzeugleuchte
DE19737550A1 (de) * 1996-09-18 1998-03-19 Valeo Vision Signalleuchte mit verbesserter Lampenabdeckung für Kraftfahrzeuge
DE19826905A1 (de) * 1997-06-30 1999-01-07 Valeo Vision Signalleuchte mit Zwischenscheibe zur optischen Behandlung und mit Designfunktion
WO2000029254A1 (de) 1998-11-12 2000-05-25 Volkswagen Aktiengesellschaft Fahrzeug-rückleuchteneinheit mit einer streifenoptik

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2743405B1 (fr) * 1996-01-10 1998-04-03 Valeo Vision Feu de signalisation a ecran intermediaire de traitement optique et de style, et procede de fabrication de l'ecran intermediaire
DE19852999A1 (de) 1998-11-17 2000-06-21 Volkswagen Ag Heckleuchte mit einer Seitenoptik für Fahrzeuge
DE10312367A1 (de) * 2003-03-20 2004-09-30 Hella Kg Hueck & Co. Zusatzlichtscheibe für eine Fahrzeugleuchte
US7484871B2 (en) * 2003-07-29 2009-02-03 Valeo Sylvania Llc Single lens for LED signal light
DE102004051178B4 (de) 2004-10-20 2018-07-12 Volkswagen Ag Scheinwerfermodul für ein Fahrzeug
DE102021122451A1 (de) 2021-08-31 2023-03-02 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für Fahrzeuge

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779629A (en) * 1971-06-23 1973-12-18 Lucas Industries Ltd Combined lens and reflector for a vehicle lamp
EP0472890B1 (de) * 1990-08-10 1994-06-29 Hella KG Hueck & Co. Mehrkammerleuchte für Kraftfahrzeuge

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR956566A (de) * 1950-02-02
US1878909A (en) * 1923-12-10 1932-09-20 Stimson Jonathan Cass Signal lantern
GB443759A (en) * 1935-07-16 1936-03-05 Jonathan Cass Stimson Moulded reflector
US2351080A (en) * 1939-02-11 1944-06-13 Swarovski Daniel Signal device
DE2902772C2 (de) * 1979-01-25 1981-02-12 Heinz 5300 Bonn Konen Mehrfunktions-Rückleuchte für Straßenfahrzeuge
FR2844822B1 (fr) * 2002-09-19 2005-06-24 Procofi Serrure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779629A (en) * 1971-06-23 1973-12-18 Lucas Industries Ltd Combined lens and reflector for a vehicle lamp
EP0472890B1 (de) * 1990-08-10 1994-06-29 Hella KG Hueck & Co. Mehrkammerleuchte für Kraftfahrzeuge

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0637716A1 (de) * 1993-07-07 1995-02-08 Hella KG Hueck & Co. Lichtscheibe einer mehrere Lichtfunktionen aufweisenden Fahrzeugleuchte
DE19737550A1 (de) * 1996-09-18 1998-03-19 Valeo Vision Signalleuchte mit verbesserter Lampenabdeckung für Kraftfahrzeuge
DE19826905A1 (de) * 1997-06-30 1999-01-07 Valeo Vision Signalleuchte mit Zwischenscheibe zur optischen Behandlung und mit Designfunktion
WO2000029254A1 (de) 1998-11-12 2000-05-25 Volkswagen Aktiengesellschaft Fahrzeug-rückleuchteneinheit mit einer streifenoptik

Also Published As

Publication number Publication date
FR2685440B1 (fr) 1998-03-13
US5436762A (en) 1995-07-25
ES2100322T3 (es) 1997-06-16
DE69218162D1 (de) 1997-04-17
BR9205074A (pt) 1993-08-10
ATE150157T1 (de) 1997-03-15
EP0549423B1 (de) 1997-03-12
FR2685440A1 (fr) 1993-06-25
DE69218162T2 (de) 1997-08-14

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