EP0872687B1 - Scheinwerfer für Fahrzeuge - Google Patents
Scheinwerfer für Fahrzeuge Download PDFInfo
- Publication number
- EP0872687B1 EP0872687B1 EP98106662A EP98106662A EP0872687B1 EP 0872687 B1 EP0872687 B1 EP 0872687B1 EP 98106662 A EP98106662 A EP 98106662A EP 98106662 A EP98106662 A EP 98106662A EP 0872687 B1 EP0872687 B1 EP 0872687B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reflector
- light distribution
- light
- hand
- operating position
- 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
Links
Images
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
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving light sources
-
- 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
-
- 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
-
- 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
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/62—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution for adaptation between right-hand and left-hand traffic
Definitions
- the invention relates to a headlight for vehicles according to the preamble of the claim 1.
- a headlamp with a reflector which Rotation of the reflector around its optical axis between left and right-hand traffic can be converted.
- a disadvantage of the known headlamp is that with rotation of the entire reflector, the light distribution on one side, the light / dark boundary falls below undesirably, so that the light distribution only for one type of traffic can be optimally aligned.
- a headlight with a reflector is known, the one Has symmetrical light distribution for right and left-hand traffic, with one side the light distribution by shielding a selected reflector area with the help a shielding device arranged between the reflector and the light source is hidden becomes.
- a disadvantage of this known headlight is that a reflector area cannot contribute to the light distribution for right-hand or left-hand traffic.
- a headlight with a reflector in which by translational relative movement of the light source to the reflector of the headlights from a first operating position with a predetermined light distribution into a second operating position can be brought with a changed light distribution.
- the in the Light distribution provided in the first operating position can be advantageous in fog and Snowfall can be used.
- the light distribution assigned to the second operating position can be used advantageously in haze or rain. The light / dark boundary the light distribution remains unchanged.
- the object of the present invention is to provide a headlight for vehicles with a Specify reflector that easily with a homogeneous light distribution a sharp light / dark boundary in different operating modes.
- the invention are by changing the distance between the light source and at least two different types of light distributions can be generated for the reflector, the light distribution completely meets the lighting requirements satisfy.
- the invention is based on the idea that a translational Changing the relative position of the reflector and light source is the same as a new one Focussing position in the through a coordinated design of the free-form reflector another predetermined light distribution can be generated.
- the reflector is designed as an open space reflector, so that by a relative displacement of the Light source generates a second light distribution on the optical axis of the reflector can be. With simple adjustment means, the headlight can at least generate two different types of light distributions.
- the headlight in a first operating position as a headlight with a light distribution used for right-hand traffic and in a second operating position, in the light source is closer to the hole in the reflector, to generate a light distribution for left-hand traffic.
- the reflector has a first reflector half, the first Sector for forming an asymmetrical increase in light distribution for right-hand traffic and a second sector to form an asymmetrical increase in light distribution for left-hand traffic.
- the pre-focusing i.e. the change of the focal point in the direction of the reflector on the optical axis that the light distribution generated by the reflector half is rotated so that in each case an asymmetrical increase can be generated on the other side of a vertical.
- the sector for the formation of the asymmetrical Rise for left-hand traffic in an upper area of the first reflector half arranged. This allows targeted control by a possibly the Headlight-covering optics pane are made, because the light rays reflected by the upper area of the reflector do not cross.
- FIG. 1 shows a schematically illustrated headlight (1), which as Low beam headlights are used for motor vehicles.
- the headlight (1) has a reflector (2) in which a light source (3) is used.
- the Light source (3) can preferably be used as a halogen lamp, in particular as H7 lamp be formed. It can also be a suitable gas discharge lamp come into use.
- the reflector (2) has a central, coaxial to one optical axis (A) arranged bore (4), in the known per se
- the light source (3) is non-positively connected to the reflector (2).
- the reflector (2) is arranged in a fixed position in a headlight housing (5) the light outlet opening of the headlight through a transparent Cover plate (6) made of glass or plastic is covered.
- the cover plate (6) can be designed as a clear cover plate with no scattering effect.
- the cover disc (6) can also be used as an optical disc with a scattering effect be executed.
- the reflector (2) is designed as an open space reflector consists of several sub-areas so that the light source (3) emitted light reflected as a bundle of light and a predetermined Light distribution on a vertically arranged in front of the vehicle Measuring screen (7) is generated.
- the headlight (1) By moving the light source (3) from an operating position in which one first light distribution is generated, along the optical axis (A) Path ( ⁇ s) the headlight (1) can be brought into an operating position in which one second light distribution can be generated.
- different light distributions can be used. For example by setting the light source (3) in a first operating position Light distribution for right-hand traffic and in a second operating position Light distribution for left-hand traffic can be generated.
- the path ⁇ s is 2.5 mm.
- the reduction of Distance of the light source (3) from the bore (4) of the reflector (2) can for example by placing a ring on the lamp holder Light source (3) on the back of the reflector (2) can be set.
- simple Mechanical adjustment means can thus be a when manufacturing the headlight (1) fixed operating position of the light source (3) can be set.
- the Reflector (2) has a left reflector half (8) and a right reflector half (9), the partial surfaces of the left reflector half (8) being shaped in such a way that in the first operating position an asymmetrical increase to the right of the Vertical of the measuring screen (7) and in the second operating position asymmetrical rise to the left of the vertical (V) of the measuring screen (7) becomes.
- an upper region is created or an upper sector (10) a basic light distribution to the left of the vertical (V) below the horizontal light / dark boundary.
- Exemplary for the partial areas are the spiral images of the light source (3) at the reflector points a, b and c of sketched upper area (10) in the light distribution according to Figure 2b.
- On lower area (11) has a sector (12) which is asymmetrical 15 ° rise (13) to the right of the vertical (V). Examples of these are the Reflector points d and e are shown reflected spiral images, the upper one Pages set the light / dark limit.
- the described Light distribution representations represent the dashed outline through the generated two reflector halves (8) and (9) in the respective operating mode Light distribution.
- the upper region (10) produces in the second operating position the asymmetrical increase to the left of the vertical (V) and thus defines the light / dark boundary on the left.
- the lower Area (11) of the reflector half (8) contributes to the basic light distribution on the right Side of the vertical (V) at.
- the reduction of Distance of the light source (3) from the bore (4) of the reflector (2) around given path ⁇ s a light distribution that is clockwise around the optical axis (A) is twisted.
- an upper area (14) of the right reflector half (9) Basic light distribution on the right side of the vertical (V) at.
- a lower one Area (15) of the reflector half (9) generates light images along the Light / dark boundary (16) on the left side of the vertical (V).
- FIG. 4c in conjunction with FIG. 4b that in operation for Left-hand traffic the partial areas of the right reflector half (9) a horizontal Create light / dark boundary (17) to the right of the vertical (V). On the left a vertical light distribution is generated for the vertical (V). The light distribution of the right reflector half (9) in operation for right-hand traffic thus experiences one Rotation around the optical axis (A) counterclockwise to pass through Pre-focus to get into left-hand traffic.
- the functions of the left reflector half (8) can be on the one hand and the right reflector half (9) on the other hand also replaced become. It is important that the partial surfaces of the reflector halves (8) and (9) so are formed that the course of the spiral images, starting from one upper part of a reflector half (8) or (9) to a lowermost Partial area of the same reflector halves, an opposite image from the left to the right or from right to left on the measuring screen (7).
- FIG. 5 shows an embodiment of a cover disk (6) as an optical disk (20) depicting an area (21) with a special one on the top Area (10) of the left reflector half (8) has coordinated optics.
- a cover disk (6) as an optical disk (20) depicting an area (21) with a special one on the top Area (10) of the left reflector half (8) has coordinated optics.
- additional training in accordance with the Asymmetrical rise-oriented prisms of the rise angle in operation be influenced when driving on the left.
- a scattering of this light beam through a light beam that is reflected at other reflector areas cannot enter.
- By providing an optical disc (20) for operation in Left-hand traffic of the headlight (1) can optimize the light distribution can be achieved.
Description
- Figur 1:
- einen Scheinwerfer im horizontalen Längsschnitt,
- Figur 2a:
- eine Aufteilung der linken Reflektorhälfte mit einer Mehrzahl von Teilflächen zur Erzeugung einer Lichtverteilung im Rechtsverkehr,
- Figur 2b:
- eine schematische Darstellung einer Lichtverteilung der durch die linke Reflektorhälfte nach Figur 2 a) erzeugten Lichtverteilung,
- Figur 3a:
- eine Aufteilung der linken Reflektorhälfte mit einer Mehrzahl von Teilflächen zur Erzeugung einer Lichtverteilung im Linksverkehr,
- Figur 3b:
- eine schematische Darstellung einer durch die linke Reflektorhälfte gemäß Figur 3a erzeugten Lichtverteilung im Linksverkehr,
- Figur 4a:
- eine Aufteilung der rechten Reflektorhälfte mit einer Mehrzahl von Teilflächen zur Erzeugung einer Lichtverteilung im Rechtsverkehr,
- Figur 4b:
- eine schematische Darstellung einer durch die rechte Reflektorhälfte nach Figur 4a erzeugte Lichtverteilung im Rechtsverkehr,
- Figur 4c:
- eine schematische Darstellung einer durch die rechte Reflektorhälfte nach Figur 4a erzeugten Lichtverteilung im Linksverkehr und
- Figur 5:
- eine Vorderansicht auf eine Optikscheibe für einen Scheinwerfer mit einer Lichtverteilung für Linksverkehr.
Claims (7)
- Scheinwerfer für Fahrzeuge mit einer Lichtquelle (3) und einem Reflektor (2), der aus dem von der Lichtquelle (3) ausgesandten Licht ein Lichtbündel bildet, das eine vorgegebene Lichtverteilung mit einer Hell-/Dunkelgrenze erzeugt dass der Reflektor (2) als Freiflächenreflektor ausgebildet ist, so dass eine erste vorgegebene Lichtverteilung in einer ersten Betriebsposition einstellbar ist und dass eine zweite vorgegebene Lichtverteilung durch translatorische Veränderung der relativen Lage der Lichtquelle (3) zu dem Reflektor (2) von der ersten Betriebsposition in eine zweite Betriebsposition einstellbar ist, dadurch gekennzeichnet, dass der Reflektor (2) in der ersten Betriebsposition eine Lichtverteilung für Rechtsverkehr erzeugt und dass durch Verringerung des Abstandes zwischen der Lichtquelle (3) und einer Bohrung (4) des Reflektors (2) um einen vorgegebenen Verstellweg (s) der Scheinwerfer (1) in die zweite Betriebsposition bringbar ist, in der eine Lichtverteilung für Linksverkehr erzeugt wird, wobei der Reflektor (2) eine erste Reflektorhälfte (8) aufweist, die zum einen einen ersten Sektor (12) zur Bildung eines asymmetrischen Anstieges einer Lichtverteilung für Rechtsverkehr und zum anderen einen zweiten Sektor (10) zur Bildung eines asymmetrischen Anstieges einer Lichtverteilung für Linksverkehr aufweist.
- Scheinwerfer nach Anspruch 1 dadurch gekennzeichnet, daß der zweite Sektor (10) in einem oberen Bereich der ersten Reflektorhälfte (8) angeordnet ist.
- Scheinwerfer nach Anspruch 1 oder 2 dadurch gekennzeichnet, daß die erste Reflektorhälfte (8) als linke Reflektorhälfte ausgebildet ist, die in Lichtaustrittsrichtung links der vertikalen Längsebene des Reflektors (2) angeordnet ist.
- Scheinwerfer nach einem der Ansprüche 1 bis 3 dadurch gekennzeichnet, daß die Teilflächen der linken Reflektorhälfte (8) derart ausgebildet sind, daß ausgehend von dem oberen Bereich (10) Wendelbilder erzeugt werden, die sich von einem linken Rand der Lichtverteilung bis zu einem rechten Rand derselben erstrecken.
- Scheinwerfer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Sektor (12) zur Bildung des asymmetrischen Anstiegs im Rechtsverkehr in einem unteren Bereich (11) der linken Reflektorfläche (8) angeordnet ist.
- Scheinwerfer nach einem des Ansprüche 1 bis 5 dadurch gekennzeichnet, daß eine gegenüberliegende zweite Reflektorhälfte als rechte Reflektorhälfte (9) mit solchen Teilflächen ausgebildet ist, daß in der ersten Betriebsposition eine Lichtverteilung mit einer waagerechten Hell-/Dunkelgrenze links der Vertikalen und in der zweiten Betriebsposition eine Lichtverteilung mit einer waagerechten Hell-/Dunkelgrenze auf der rechten Seite der Vertikalen erzeugt wird.
- Scheinwerfer nach Anspruch 6 dadurch gekennzeichnet, daß sich die Wendelbilder, die durch die rechte Reflektorhälfte (9) ausgehend von einem oberen Bereich (14) hin zu einem unteren Bereich (15) erzeugt werden, sich in entgegengesetzter Richtung zu den Wendelbildern, die durch die linke Reflektorhälfte (8) ausgehend von dem oberen Bereich (10) hin zu dem unteren Bereich (11) erzeugt werden, erstrecken.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19716216 | 1997-04-18 | ||
DE19716216A DE19716216A1 (de) | 1997-04-18 | 1997-04-18 | Scheinwerfer für Fahrzeuge |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0872687A2 EP0872687A2 (de) | 1998-10-21 |
EP0872687A3 EP0872687A3 (de) | 2000-12-20 |
EP0872687B1 true EP0872687B1 (de) | 2003-07-16 |
Family
ID=7826886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98106662A Expired - Lifetime EP0872687B1 (de) | 1997-04-18 | 1998-04-11 | Scheinwerfer für Fahrzeuge |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0872687B1 (de) |
DE (2) | DE19716216A1 (de) |
ES (1) | ES2203845T3 (de) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS636602U (de) * | 1986-06-30 | 1988-01-18 | ||
JPH0317362Y2 (de) * | 1986-07-10 | 1991-04-12 | ||
DE3933540C2 (de) * | 1989-10-07 | 1999-04-01 | Bosch Gmbh Robert | Scheinwerfer mit veränderbarer Lage einer darin angeordneten Lichtquelle für Kraftfahrzeuge |
DE4307110C2 (de) * | 1993-03-06 | 2002-06-20 | Bosch Gmbh Robert | Kraftfahrzeugscheinwerfer mit wenigstens einer bewegbaren Abschirmvorrichtung |
DE4307109C2 (de) * | 1993-03-06 | 2003-12-24 | Bosch Gmbh Robert | Abblendlichtscheinwerfer für Rechts- und Linksverkehr für Kraftfahrzeuge |
-
1997
- 1997-04-18 DE DE19716216A patent/DE19716216A1/de not_active Withdrawn
-
1998
- 1998-04-11 DE DE59809006T patent/DE59809006D1/de not_active Expired - Fee Related
- 1998-04-11 EP EP98106662A patent/EP0872687B1/de not_active Expired - Lifetime
- 1998-04-11 ES ES98106662T patent/ES2203845T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE19716216A1 (de) | 1998-10-22 |
DE59809006D1 (de) | 2003-08-21 |
ES2203845T3 (es) | 2004-04-16 |
EP0872687A3 (de) | 2000-12-20 |
EP0872687A2 (de) | 1998-10-21 |
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