DE7335191U - LIGHTING DEVICE - Google Patents

LIGHTING DEVICE

Info

Publication number
DE7335191U
DE7335191U DE7335191U DE7335191U DE7335191U DE 7335191 U DE7335191 U DE 7335191U DE 7335191 U DE7335191 U DE 7335191U DE 7335191 U DE7335191 U DE 7335191U DE 7335191 U DE7335191 U DE 7335191U
Authority
DE
Germany
Prior art keywords
light
reflector
angle
lighting device
cone
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
Application number
DE7335191U
Other languages
German (de)
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.)
Ducellier et Cie
Original Assignee
Ducellier et Cie
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ducellier et Cie filed Critical Ducellier et Cie
Publication of DE7335191U publication Critical patent/DE7335191U/en
Expired legal-status Critical Current

Links

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
    • F21V7/06—Optical design with parabolic curvature
    • 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
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/275—Lens surfaces, e.g. coatings or surface structures
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/28—Cover glass
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • 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
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • 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
    • F21S41/331—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas
    • F21S41/333—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas with discontinuity at the junction between adjacent areas
    • 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
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/335—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with continuity at the junction between adjacent areas
    • 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
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
    • 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/162—Incandescent light sources, e.g. filament or halogen lamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/30—Fog lights

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Description

PatentanwältePatent attorneys

Dipl. tnq. H. Wcirkmann, Dipl. Phys. Dr. K. FinckeDipl. Tnq. H. Wcirkmann, Dipl. Phys. Dr. K. Fincke

Dipl. Ing. F. Λ. V/:ickir.nnn, D;pl. Chom. B. HübetDipl. Ing. F. Λ. V /: ickir.nnn, D; pl. Chom. B. Hübet

8 München UO1 Mülilstraße 228 Munich UO 1 Mülilstrasse 22

DUCELLIER et Gie.DUCELLIER et Gie.

23, Rue Alexandre-Dumas23, rue Alexandre-Dumas

F-75 Paris XIeF-75 Paris XIe

£ Beleuchtungsvorrichtung £ lighting device

■ Die Erfindung betrifft eine Beleuchtungsvorrichtung, ine.be-■ The invention relates to a lighting device, ine.be-

; sondere für Kraftfahrzeuge, bestehend aus einem Scheinwerfer; especially for motor vehicles, consisting of a headlight

mit einer Lichtquelle, einem Streuglas und einem Reflektor.with a light source, a diffuser and a reflector.

Bei den bekannten Beleuchtungsvorrichtungen für Kraftfahrzeuge ist es bekannt, daß man zur Verbesserung der Verteilung des von den Scheinwerfern des Kraftfahrzeuges ausgesandten Lichtkegels Scheinwerfergläser verwendet, die mit Prismen oder mit Rillen unterschiedlicher Radien ausgestattet sind,In the known lighting devices for motor vehicles, it is known that to improve the distribution of the light cone emitted by the headlights of the motor vehicle. Headlight glasses are used with prisms or are equipped with grooves of different radii,

\ wobei deren Ausgestaltung von der gewünschten Lichtverteilung \ where their design depends on the desired light distribution

entsprechend der Größe des herzustellenden Lichtkegels abhängt .depends on the size of the light cone to be produced.

Die Größe des Lichtkegels ist selbstverständlich vom Ausgangswinkel des Lichtkegels abhängig, und bei klein dimensioniertenThe size of the light cone is of course dependent on the starting angle depending on the light cone, and with small dimensions

7335191 2 3.12.767335191 2 3.12.76

bcneinwerrern erreicnt juan maxxiuax
Bei der Anwendung dieser Technik erscheint es schwierig, den Radius der Rillen weiter zu vergrößern, um einen noch größeren Lichtkegel zu erzielen, was unbedingt für einen guten Wirkungsgrad der Scheinwerfer, insbesondere der Nebelscheinwerfer, notwendig ist, welche besonders eine maximale Strahlenverteilung bei einer gleichzeitig maximalen Lichtkonzentration erfordern.bcneinwerrern reaches juan maxxiuax
When using this technique, it seems difficult to increase the radius of the grooves further in order to achieve an even larger cone of light, which is absolutely necessary for a good efficiency of the headlights, in particular the fog lights, which especially a maximum beam distribution with a maximum at the same time Require light concentration.

Die Erfindung bezweckt, eine Vorrichtung zu schaffen, die diese Forderungen erfüllt und betrifft daher eine Beleuchtungsvorrichtung, insbesondere für Kraftfahrzeuge, bestehend aus einem Scheinwerfer mit einer Lichtquelle, einem Streuglas und einem Reflektor,- die dadurch gekennzeichnet ist, daß der Reflektor von zwei Paraboloidteilen gebildet ist, deren Rotationsachsen zwischen sich einen bestimmten Winkel einschließen und sich in ihren Brennpunkten in einem Punkt schneiden, der auf der Achse des Reflektors liegt und annähernd mit dem Zentrum der Lichtquelle zusammenfällt.The invention aims to create a device that meets these requirements and therefore relates to a lighting device, in particular for motor vehicles, consisting of a headlight with a light source, a diffuser and a reflector, - which is characterized in that the reflector is formed by two paraboloid parts, the axes of rotation of which enclose a certain angle between them and intersect at their focal points at a point lying on the axis of the reflector and approximately with the center the light source coincides.

Mit einem solchen Reflektor können zwei gerade und scharfe Lichtkegel erzielt werden, die nach ihrem Durchgang durch das Streuglas des Scheinwerfers, welches mit Prismen od^r Rillen versehen ist, in einen einheitlichen Lichtkegel umgewandelt werden, der eine gleichmäßige Verteilung und Lichtintensität mit einem Austrittswinkel von sehr großer Öffnung bis zu 180° aufweist, denn der Winkel der beiden Lichtkegel wird zu dem Verteilungswinkel hinzuaddiert, der durch die Rillen des Streuglases erzeugt wird.With such a reflector two straight and sharp cones of light can be achieved, which after their passage through the diffuser of the headlight, which has prisms or grooves is provided, can be converted into a uniform cone of light, which has an even distribution and light intensity with an exit angle of a very large opening of up to 180 °, because the angle of the two light cones is is added to the distribution angle created by the grooves of the diffuser.

Weitere Merkmale, Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausfüh-Further features, advantages and details of the invention emerge from the following description of an embodiment

7335191 2 3.12.767335191 2 3.12.76

runqsbeispiels anhand der Zeichnung. Darin zeigen:runqsample based on the drawing. Show in it:

Fig.l einen schematisehen Längsschnitt durch eine Beleuchtungsvorrichtung gemäß der Erfindung, undFig.l shows a schematic longitudinal section through a lighting device according to the invention, and

Fig.2 und 3 den Verlauf, d.h. die "Isoluxkurve" eines Lichtkegels auf einem senkrechten Schirm, der vor der Beleuchtungsvorrichtung angeordnet ist/ ohne bzw. mit dem Streuglas.2 and 3 show the course, i.e. the "isolux curve" of a Cone of light on a vertical screen, which is arranged in front of the lighting device / without or with the diffuser.

Die insgesamt mit dem Bezugszeichen 1 bezeichnete Beleuchtungsvorrichtung, die in der Fig.l dargestellt ist, weist in bekannter Weise eine Lichtquelle 2, ein Streuglas 3 und einen Reflektor 4 auf, auf dem das Streuglas 3 befestigt ist. Der Reflektor 4 der Beleuchtungsvorrichtung 1 wird gemäß der Erfindung und gemäß einem besonderen Ausführungsbeispiel von zwei Paraboloidteilen 5 und 6 gebildet, die miteinander mit an sich bekannten Mitteln derart verbunden sind, daß sie gegeneinander konvergieren, wobei ihre Rotationsachsen 5a bzw. 6a einen Winkel von 60° einschließen, sich in ihren Brennpunkten schneiden, wobei der Schnittpunkt auf der Achse 11 des Reflektors 4 liegt und wobei die Punkte mit dem Mittelpunkt 0 der Lichtquelle 2 zusammenfallen.The lighting device designated as a whole by the reference number 1, which is shown in Fig.l, has in a known manner a light source 2, a diffuser 3 and a Reflector 4 on which the diffuser 3 is attached. The reflector 4 of the lighting device 1 is according to the invention and formed according to a particular embodiment of two paraboloid parts 5 and 6, which with each other means known per se are connected in such a way that they converge against one another, with their axes of rotation 5a and 5a, respectively. 6a enclose an angle of 60 °, intersect at their focal points, the point of intersection on the axis 11 of FIG Reflector 4 lies and wherein the points coincide with the center 0 of the light source 2.

Von dieser Vorrichtung gehen zwei gerade und scharf begrenzte Lichtkegel 5b und 6b aus, die zwischen sich einen Winkel einschließen, der demjenigen Winkel entspricht, der von den Achsen 5a und 6a gebildet wird, d.h., einen Winkel von 60 . Wenn die Lichtstrahlen der Lichtkegel 5b und 6b durch das Streuglas 3 hindurchtreten, welches mit Rillen 3a ausgestattet ist, dann erfolgt eine bestimmte Ablenkung infolge des Radius der Rillen 3a.From this device go out two straight and sharply delimited light cones 5b and 6b, which include an angle between them, which corresponds to the angle formed by axes 5a and 6a, i.e. an angle of 60. if the light rays of the light cones 5b and 6b pass through the diffusing glass 3, which is equipped with grooves 3a, then there is a certain deflection due to the radius of the grooves 3a.

Bei dem ausgewählten Ausführungsbeispiel weiser die Rillen 3a des Streuglascs 3 einen solchen Radius av^, daß eine maximale Ablenkung der Lichtstrahlen eines jeden Lichtkegels 5b und 6b erzielt wird. Die Ablenkung jedes Lichtkegels 5b und 6b hat einen Wert von annähernd 40°, der zu dem ursprünglichen Winkel dieser Lichtkegel hinzugezählt wird. Man erhält daher aufgrund eine* Kombination eines solchen Reflektors 4 mit einem solchen Streuglas 3 einen einheitlichen Lichtkegel 9, der gleichmäßig verteilt ist und eine gleichmäßige Lichtintensität aufweist und sich über einen Winkel von 140° erstreckt, wobei sich der Winkel aus dem Winkel des Reflektors 4 plus dem durch die Rillen 3a des Streuglases 3 hervorgerufenen Ablenkungswinkel zusammensetzt. In the selected embodiment, the grooves 3a of the scatter glass 3 such a radius av ^ that a maximum Deflection of the light rays of each light cone 5b and 6b is achieved. The deflection of each light cone 5b and 6b has a value of approximately 40 °, which is added to the original angle of this light cone. One therefore obtains due to a * combination of such a reflector 4 with such a Diffusing glass 3 a uniform cone of light 9, which is evenly distributed and has a uniform light intensity and extends over an angle of 140 °, the angle being the angle of the reflector 4 plus that through the grooves 3a of the scattering glass 3 caused deflection angle composed.

Die Fig.2 und 3 zeigen Isoiuxkurven- ale entsprechend mit si= ner solchen Vorrichtung ohne Streug^as 3 und mit einer solchen Vorrichtung mit dem Streugias 3 erzielbar sind und wobei die vorgenannten Vorteile fichtbar werden, insbesondere die Umwandlung der Lichtkegel 5b und 6b (siehe Fig.2) in einen einheitlichen Lichtkegel 9 (siehe Fig.3).FIGS. 2 and 3 show Isoiux curves correspondingly with si = Such a device without scattering ^ as 3 and with such a device Device with the scattering glass 3 can be achieved and the aforementioned advantages can be seen, in particular the conversion the light cone 5b and 6b (see Fig.2) into a uniform light cone 9 (see Fig.3).

Nach einem weiteren Merkmal der Erfindung kann auch vorgesehen sein, daß der Reflektor aus zwei unterschiedlichen Paraboloidteilen zusammengesetzt ist, wenn der Platzbedarf dies erfordert, ohne daß die vorher erwähnten Vorteile dadurch verloren gehen.According to a further feature of the invention, provision can also be made be that the reflector is composed of two different paraboloid parts, if the space requirement so requires, without the aforementioned advantages being lost.

7335191 23.12.767335191 12/23/76

Claims (1)

Beleuchtungsvorrichtung, insbesondere für Kraftfahrzeuge, bestehend aus einem Scheinwerfer mit einer Lichtquelle, einem Streuglas und einem Reflektor, dadurch gekennzeichnet , daß der Reflektor (4) von zwei Paraboloidteilen (5,6) gebildet ist, deren Rotationsachsen (5a,6a) zwischen sich einen bestimmten Winkel einschließen und sich in ihren Brennpunkten in einem Punkt schneiden, der auf der Achse (11) des Reflektors liegt und annähernd mit dem Zentrum (0) der Lichtquelle (2) zusammenfällt, so daß zwei Lichtkegel (5b,6b) mit einem Winkel gebildet werden, der dem von den Rotationsachsen der ParaboloidteiIe gebildeten Winkel entspricht, wobei die beiden von dem Reflektor ausgehenden Lichtkegel während ihres Durchtretens durch das Glas abgelenkt werden und einen einheitlichen Lichtkegel (9) gleichmäßiger Verteilung und Lichtintensität mit eineir Austrittswinkel von sehr großer öffnung bis zu 180° bilden.Lighting device, in particular for motor vehicles, consisting of a headlight with a light source, a diffuser and a reflector, characterized in that the reflector (4) consists of two paraboloid parts (5,6) is formed whose axes of rotation (5a, 6a) include a certain angle between them and themselves cut at their focal points at a point lying on the axis (11) of the reflector and approximately with the center (0) of the light source (2) coincides, so that two light cones (5b, 6b) are formed with an angle which corresponds to that of the Axes of rotation of the ParaboloidteiIe angle formed corresponds, with the two light cones emanating from the reflector be deflected during their passage through the glass and a uniform cone of light (9) more evenly Form distribution and light intensity with an exit angle of a very large opening up to 180 °. 7335191 23.12.767335191 12/23/76
DE7335191U 1972-10-26 1973-09-28 LIGHTING DEVICE Expired DE7335191U (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7238022A FR2204778B3 (en) 1972-10-26 1972-10-26

Publications (1)

Publication Number Publication Date
DE7335191U true DE7335191U (en) 1976-12-23

Family

ID=9106266

Family Applications (2)

Application Number Title Priority Date Filing Date
DE7335191U Expired DE7335191U (en) 1972-10-26 1973-09-28 LIGHTING DEVICE
DE19732348913 Pending DE2348913A1 (en) 1972-10-26 1973-09-28 LIGHTING DEVICE

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE19732348913 Pending DE2348913A1 (en) 1972-10-26 1973-09-28 LIGHTING DEVICE

Country Status (6)

Country Link
BE (1) BE802979A (en)
DE (2) DE7335191U (en)
ES (1) ES196602Y (en)
FR (1) FR2204778B3 (en)
GB (1) GB1444597A (en)
IT (1) IT1003109B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4103236A1 (en) * 1991-02-02 1992-08-06 Jenoptik Jena Gmbh Illumination unit for copier, cine projector or projection lithography - uses extended light source in rotationally symmetrical reflector with prim. focal point and sec. focal turns in which shutter and refractive element are placed
DE19651957B4 (en) * 1995-12-13 2006-03-30 Koito Mfg. Co., Ltd. Lamp device for a vehicle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3208741C3 (en) * 1982-03-11 1993-11-18 Bosch Gmbh Robert Turn signal, in particular front turn signal, for motor vehicles
DE3933411A1 (en) * 1989-10-06 1991-04-18 Daimler Benz Ag Divided paraboloidal reflector for motor vehicle lamp - minimises central dark zone by direct transmission through Fresnel lens with peripheral reflection from inclined paraboloids
DE4020080C2 (en) * 1990-06-23 1998-10-15 Bosch Gmbh Robert Reflector as part of a motor vehicle high beam headlight

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4103236A1 (en) * 1991-02-02 1992-08-06 Jenoptik Jena Gmbh Illumination unit for copier, cine projector or projection lithography - uses extended light source in rotationally symmetrical reflector with prim. focal point and sec. focal turns in which shutter and refractive element are placed
DE19651957B4 (en) * 1995-12-13 2006-03-30 Koito Mfg. Co., Ltd. Lamp device for a vehicle

Also Published As

Publication number Publication date
ES196602U (en) 1975-03-16
BE802979A (en) 1973-11-16
DE2348913A1 (en) 1974-05-02
FR2204778A1 (en) 1974-05-24
GB1444597A (en) 1976-08-04
FR2204778B3 (en) 1975-11-28
ES196602Y (en) 1975-08-01
IT1003109B (en) 1976-06-10

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