EP0549423B1 - 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 PDFInfo
- Publication number
- EP0549423B1 EP0549423B1 EP92403444A EP92403444A EP0549423B1 EP 0549423 B1 EP0549423 B1 EP 0549423B1 EP 92403444 A EP92403444 A EP 92403444A EP 92403444 A EP92403444 A EP 92403444A EP 0549423 B1 EP0549423 B1 EP 0549423B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pseudo
- catadioptric
- elements
- glass
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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 top ⁇ is equal to 35 ° 15 ' .
- a well-known pseudo-catadioptric element 20 is represented 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 out, an aspect completely similar to that of a real catadioptric element.
- Such an element is known from FR-A-2 589 983.
- Another known solution for producing a pseudo-reflector consists in preserving the geometry of the retro-reflecting element in 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 the interior of 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, comprising, in at least one zone, a plurality of pseudo-catadioptric elements characterized in that the pseudo-catadioptric elements each have a conical end on the inside of the glass, as described in the independent claims.
- 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 let the incident light pass through said inner side of ice.
- 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 inner side of the crystal 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 tapered drill, 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 let light through. More specifically, a satisfactory passage of light is obtained for an apex angle of between approximately 110 and 165 °, preferably between approximately 130 and 150 °.
- 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 has two horizontal rows of pseudo-catadioptric elements 20 staggered.
- the bands 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 band 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 pitch 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.
- regions R1, R2, R3 and R5 are produced in the spirit of FIGS. 6 to 9, with bands Z1 constituted by pseudo-catadioptric elements 20 according to the invention in alternation with bands Z2 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 real 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.
Landscapes
- 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)
- Optical Communication System (AREA)
- Support Of Aerials (AREA)
- Glass Compositions (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Optical Elements Other Than Lenses (AREA)
Claims (12)
- Abdeckscheibe (G) für wenigstens eine Signalleuchte, insbesondere für Kraftfahrzeuge, die zumindest in einer Zone (Z1) eine Mehrzahl von pseudo-katadioptrischen Elementen (20) umfaßt , dadurch gekennzeichnet, daß die pseudo-katadioptrischen Elemente jeweils auf der Innenseite der Abdeckscheibe ein konisches Ende (26) aufweisen und daß der Spitzenwinkel wenigstens einer Gruppe von pseudo-katadioptrischen Elementen (20) kleiner als 110° ist, so daß das auf der besagten Innenseite der Abdeckscheibe einfallende Licht wenigstens teilweise abgedeckt wird.
- Abdeckscheibe (G) für wenigstens eine Signalleuchte, insbesondere für Kraftfahrzeuge, die zumindest in einer Zone (Z1) eine Mehrzahl von pseudo-katadioptrischen Elementen (20) umfaßt , dadurch gekennzeichnet, daß die pseudo-katadioptrischen Elemente (20) jeweils auf der Innenseite der Abdeckscheibe ein konisches Ende (26) aufweisen und daß der Spitzenwinkel und/oder die Ausrichtung der Achsen der konischen Enden zwischen den einzelnen pseudo-katadioptrischen Elementen (20) unterschiedlich ausfällt.
- Abdeckscheibe (G) für wenigstens eine Signalleuchte, insbesondere für Kraftfahrzeuge, die zumindest in einer Zone (Z1) eine Mehrzahl von pseudo-katadioptrischen Elementen (20) umfaßt , dadurch gekennzeichnet, daß die pseudo-katadioptrischen Elemente (20) jeweils auf der Innenseite der Abdeckscheibe ein konisches Ende (26) aufweisen, daß wenigstens eine Gruppe von pseudo-katadioptrischen Elementen (20) in einem länglichen Streifen (Z1) mit einer oder mehreren Reihen der besagten Elemente angeordnet ist und daß jedes konische Ende (26) eines pseudo-katadioptrischen Elements auf einer Rippe (N) mit geraden Kanten vorgesehen ist, die sich auf der Innenseite der Abdeckscheibe wenigstens auf einem Teil der Breite jedes pseudo-katadioptrischen Streifens (Z1) erstreckt.
- Signaleinrichtung für Kraftfahrzeuge mit wenigstens einer Signalfunktion , dadurch gekennzeichnet, daß sie eine Abdeckscheibe (G) nach einem der Ansprüche 1 bis 3 umfaßt.
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 EP0549423A1 (de) | 1993-06-30 |
EP0549423B1 true 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 (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1002695A2 (de) | 1998-11-17 | 2000-05-24 | Volkswagen Aktiengesellschaft | Heckleuchte mit einer Streifenoptik für Fahrzeuge |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4322607C1 (de) * | 1993-07-07 | 1994-06-09 | Hella Kg Hueck & Co | Lichtscheibe einer mehrere Lichtfunktionen aufweisenden Fahrzeugleuchte |
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 |
FR2753521B1 (fr) * | 1996-09-18 | 1998-12-04 | Valeo Vision | Feu de signalisation a cache de lampe perfectionne pour vehicule automobile |
FR2765312B1 (fr) * | 1997-06-30 | 1999-09-17 | Valeo Vision | Feu de signalisation a ecran intermediaire de traitement optique et de style |
DE19852310A1 (de) | 1998-11-12 | 2000-05-18 | Volkswagen Ag | Fahrzeug-Rückleuchteneinheit mit einer Streifenoptik |
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 |
Family Cites Families (8)
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 |
AU4272272A (en) * | 1971-06-23 | 1973-11-29 | Joseph Lucas (Industries) Limited | Combined lens and reflector fora vehicle lamp |
DE2902772C2 (de) * | 1979-01-25 | 1981-02-12 | Heinz 5300 Bonn Konen | Mehrfunktions-Rückleuchte für Straßenfahrzeuge |
DE4025393C1 (de) * | 1990-08-10 | 1992-01-09 | Hella Kg Hueck & Co, 4780 Lippstadt, De | |
FR2844822B1 (fr) * | 2002-09-19 | 2005-06-24 | Procofi | Serrure |
-
1991
- 1991-12-20 FR FR9115916A patent/FR2685440B1/fr not_active Expired - Fee Related
-
1992
- 1992-12-17 EP EP92403444A patent/EP0549423B1/de not_active Expired - Lifetime
- 1992-12-17 US US07/992,067 patent/US5436762A/en not_active Expired - Lifetime
- 1992-12-17 AT AT92403444T patent/ATE150157T1/de not_active IP Right Cessation
- 1992-12-17 DE DE69218162T patent/DE69218162T2/de not_active Expired - Fee Related
- 1992-12-17 ES ES92403444T patent/ES2100322T3/es not_active Expired - Lifetime
- 1992-12-18 BR BR9205074A patent/BR9205074A/pt not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1002695A2 (de) | 1998-11-17 | 2000-05-24 | Volkswagen Aktiengesellschaft | Heckleuchte mit einer Streifenoptik für Fahrzeuge |
EP1002695A3 (de) * | 1998-11-17 | 2002-12-18 | Volkswagen Aktiengesellschaft | Heckleuchte mit einer Streifenoptik für Fahrzeuge |
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 |
EP0549423A1 (de) | 1993-06-30 |
ATE150157T1 (de) | 1997-03-15 |
FR2685440A1 (fr) | 1993-06-25 |
DE69218162T2 (de) | 1997-08-14 |
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