JP2010147025A - Lighting device for headlight - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device for a headlight for a vehicle or the like with a simple and inexpensive structure, achieving a plurality of functions by using one or a small number of light sources. <P>SOLUTION: The lighting device for a headlight is provided with a first focus, a second focus 4, an oval reflector 1 having an optical axis 2 passing through these first and second focuses, a light source 3 of an LED type arranged in the vicinity of the first focus of the reflector 1 and reflecting the emitted beam toward the second focus 4, a projection lens 5 having an optical axis almost coincided with the focus arranged in the vicinity of the second focus 4 of the reflector 1 and the optical axis of the reflector 1, and a second optical element 6 arranged in the vicinity of the second focus 4 of the reflector 1 and having a tab shape which can be moved cross-wise and having a plurality of different optical zones. By moving the tab, the headlight can be given a plurality of different functions such as a high beam, a low beam or a DRL (daytime running light) or the like. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an illuminating device, and more particularly to an illuminating device for a headlight such as a vehicle having a plurality of or changing illumination functions by a single light source.

  The vehicle headlight according to the present invention includes one or more point light sources of a light emitting diode (LED) type. This type of light source is extremely efficient in terms of power consumption compared to conventional light sources such as halogen lamps and xenon lamps. The power of an LED type light source applied to a vehicle headlight is currently 20 to 30 watts, whereas in the case of a halogen lamp having an illuminance equivalent to this, it is about 120 watts. Also, there is a reasonable belief that an LED module with the same illuminance will be possible with 5-10 watts of power in the near future. In addition, the new European legislation establishes new obligations for vehicles to have daytime running lighting (DRL) type headlights, that is, lighting devices designed to always function during daytime. ing. The impact of this increase in fuel consumption on lighting is so great that, according to the European Directive, from 2012, vehicle manufacturers will pay taxes per gram for more than 120 grams of carbon dioxide per kilometer released to the environment. Is required. Assuming that the power consumption of the halogen headlamp is about 120 watts and equivalent to about 0.15 liters of fuel per 100 km, this will be about 5 to 6 grams of carbon dioxide per km, The use of LED type light sources for vehicle headlights will become increasingly attractive in the future.

  However, LED type light sources are still very expensive compared to conventional light sources. For example, the headlight needs to have a plurality of functions such as “high beam (HB)”, “low beam (LB)”, and DRL. Using a plurality of light sources increases the cost of using the LED light source. Has a problem.

  Furthermore, using LED light sources requires an electronic control module for each light source. Therefore, the headlight casing is very complex, bulky and expensive.

  Patent document 1 is disclosing the illuminating device provided with the elliptical reflector which has two focal points in LED light source and half space. The LED light source is disposed in the vicinity of the reflector and at the level of the first focus. The light emitted from the LED light source is reflected by the reflector to the second focal point, and a reflecting surface called a vendor is disposed at the second focal point. This reflective surface has one edge on the reflective side and another edge on the opposite side of the reflector. These edges are called “cut-off edges”. A portion of the light beam reflected by the reflector meets at the reflecting surface and is reflected at this angle by the surface. Other parts of the light beam pass beyond the cut-off edge and are not deflected by the reflecting surface. Thus, the cut-off edge delimits the reflected or warped part of the light beam and the non-reflected part. A lens is placed behind the reflecting surface and its focal point corresponds to the focal point of the elliptical reflector. The reflective surface with its cut-off edge is referred to as a bender and either deflects or “bends” or bends the part of the beam to form a cut-off at the level of the beam exiting the lens. This vendor moves along an axis parallel to the optical axis of the reflector. Due to this mobility, a single light source can be used to exhibit a high beam function and a low beam function.

  On the other hand, Patent Document 2 discloses an apparatus similar to that described above, and the “bender” is movable along an axis perpendicular to and parallel to the optical axis of the elliptical reflector. These two movements enable a high beam function and a low beam function using a single light source.

  Patent Document 3 discloses an apparatus similar to that described above, in which the “vendor” is movable in the vertical direction, and the vertical screen is similarly movable in the vertical direction. According to this apparatus, a single light source can be used to enable a high beam function and a low beam function, and by moving the vertical screen, the intensity of light can be changed below the headlight beam.

  Those described in Patent Documents 1 to 3 described above operate only at a cutoff level necessary for the low beam function. In essence, they move the cut-off edge to activate or not activate the cut-off, thus allowing a change from a high beam function to a low beam function or vice versa. For example, other functions such as the DRL function that will be required in the near future cannot be guaranteed, and the function of changing the beam spread by external parameters such as the presence of an approaching vehicle by the same light source cannot be guaranteed.

  Patent Documents 4 and 5 disclose vertical masks.

Prior literature

German Patent Publication No. 10 2006 042 749 German Patent Publication No. 10 2006 051 029 German Patent Publication No. 10 2006 042 750 German Patent No. 103 05 624 U.S. Pat. No. 4,868,726

  In the prior art as described above, it is impossible or difficult to achieve many functions using a single or a small number of light sources.

  The present invention has been made in view of the problems of the prior art as described above, and enables the use of a single or a limited number of light sources to realize many optional functions that cannot be achieved with the current technology. The main object is to provide a headlight illumination device.

  The illuminating device of the present invention is a lighting device for a headlight of a vehicle in particular, and includes a reflector having a first focal point, a second focal point, and an optical axis passing through the first and second focal points, and a first of the reflector. A light source disposed in the vicinity of the focal point for reflecting the emitted light beam to the vicinity of the second focal point of the reflector; and a focal point and an optical axis located in the vicinity of the second focal point of the reflector. A first optical element that projects and reflects as a first beam along an optical axis by a reflector, and preferably has a zone that is substantially planar and located near the second focal point of the reflector; A second optical element that receives light emitted from the light source at an angle of incidence and light reflected by the reflector, the second optical element being preferably horizontal, and in particular in the plane of the optical axis of the reflector. Can be moved across the zone So that Utsuseru to the outside of the beam.

  According to the lighting device of the present invention having the above-described characteristic configuration, if several devices are mounted in parallel, only a single light source or a predetermined number of light sources can be used, and the cut-off edge is not simply moved. Many lighting functions can be realized. The transversal configuration proposed here has a unique effect that the number of functions can be extremely high.

1 is a cross-sectional plan view of a first embodiment of a headlight illumination device according to the present invention. It is an expanded sectional view of 1st Example of the illuminating device for headlights shown to FIG. 1a. FIG. 2 is an enlarged view of a mobile or movable optical element of the headlight illumination device shown in FIGS. 1a and 1b. It is explanatory drawing which shows the optical operation principle of the zone 6a of the optical element shown in FIG. It is explanatory drawing which shows the optical operation principle of the zone 6b of the optical element shown in FIG. It is explanatory drawing which shows the optical operation principle of the zone 6c of the optical element shown in FIG. It is explanatory drawing which shows the optical operation principle of the zone 6d of the optical element shown in FIG. It is an expanded sectional view which shows 2nd Example of the illuminating device for headlights by this invention. It is explanatory drawing which shows the operation principle in the "high beam" position of the illuminating device for headlights shown in FIG. It is explanatory drawing which shows the operation principle in the "selective" position of the illuminating device for headlights shown in FIG. It is explanatory drawing which shows the operation principle in the "tourism" position of the illuminating device for headlights shown in FIG. It is explanatory drawing which shows the operation principle in the "low beam" position of the illuminating device for headlights shown in FIG. It is an enlarged view which shows the reference point which positions the mobile optical element of the illuminating device for headlights shown in FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a headlight illumination device (hereinafter also simply referred to as illumination device) of the present invention will be described in detail with reference to the accompanying drawings. Various embodiments of the present invention are shown in the accompanying drawings, and the relationship between the lighting device and the mounting position of the vehicle headlight will be described. This application example is general, but does not necessarily limit the present invention. As used herein, for example, “horizontal”, “vertical”, “top”, “bottom”, “top”, “bottom”, and the like are not absolute terms and are not absolute terms. It shows only the relative positional relationship in the figure. The lighting device can be mounted in other positional relationships and / or other applications. Further, the relative positions of different components such as the light source, reflector, and lens are shown in association with the optical axis or focal point for convenience, but this is not strictly necessary and is not particularly characteristic. Some variation is possible and desirable to achieve completeness, omission of some optical elements, or some additional effect.

  FIG. 1a is a cross-sectional plan view of a first embodiment of a lighting device according to the present invention. This illuminating device is for a vehicle headlight and includes an elliptical reflector 1 that is rotationally symmetric about an optical axis 2. The reflector 1 has a reflective inner surface 12. The inner surface 12 is a plane passing through the optical axis 2 and forms a part of an ellipse. Further, the inner surface 12 corresponds to a part of the ellipse shown in FIG. 1 a and shows a half space centered on the optical axis and the rotationally symmetric axis 2. This half space is limited by the plane including the optical axis 2 and the horizontal. The reflector 1 has two focal points along its optical axis 2. The light source 3 is arranged in the vicinity of the first focal point, and a reference number 4 is assigned to the second focal point.

  It should be noted that the reflective inner surface 12 of the reflector 1 need not be perfectly elliptical, but may be one or more or complex cross-sectional shapes to optimize light scattering of the light beam. This means that the reflector 1 does not have to be completely rotationally symmetric.

  A light source 3 of a light emitting diode (hereinafter referred to as LED) type emits most of its light energy toward the reflective inner surface 12 of the reflector 1. A feature of this type of light source is that it is particularly compact, so that it can be considered as a point light source. However, other known types of light sources may be used.

  Most of the light rays emitted from the light source 3 are reflected by the reflecting surface 12 of the reflector 1. If the light source 3 is a point light source arranged at the first focal point of the reflector 1 and the reflector 1 is a perfect elliptical reflector, all the light rays reflected by the reflector 1 are Convergence at the second focal point 4. Actually, since the light source 3 is not a perfect point light source, and the reflector 1 is not necessarily a perfect ellipse, all the light rays reflected by the reflecting surface 12 of the reflector 1 converge at the second focus. There is no such thing and it goes to the vicinity of the second focal point 4.

  A moving optical element 6 is arranged in the vicinity of the second focal point 4 on the horizontal plane including the optical axis of the reflector 1 and the symmetry axis 2. This optical element 6 is shown in FIG. FIG. 1b is an enlarged view of the element in FIG. 1a. This section is a sectional view along a horizontal plane including the optical axis 2. The optical element 6 is movable to a longitudinal axis 11 that is orthogonal to the optical axis 2 and includes a horizontal plane. The optical element 6 has a substantially flat surface and includes a plurality of optically different zones in the surface, ensuring different functions of the lighting device. The optical element 6 is driven in the X-axis direction by the actuator 10 and in the Z-axis direction by the actuator 14. These actuators 10 and 14 are of an electric type such as an electric motor, a piezoelectric motor or any other type well known to those skilled in the art and move the optical element 6. The different optical zones of the optical element 6 may be a reflection type, a transmission type, a transmission coloring type, a diffusion type, a lens type, and other spatial combinations of these different types.

  Preferably, the optical element 6 can be moved in a substantially horizontal plane in a direction orthogonal to the optical axis 2 and in a direction parallel to the optical axis 2 by a single piezoelectric motor and control of an appropriate driving frequency.

  The control means of the optical element 6 is not shown, but can be performed by any method known to those skilled in the art.

  The light beam 7 reflected by the reflector 1 converges toward the second focal point 4 and enters the surface of the optical element 6, where it is reflected or transmitted depending on the optical characteristics of the optical element 6 at the incident position. If the optical characteristic at the incident position of the reflected light beam is reflected, the light beam 7 is reflected upward with respect to the optical axis 2 as shown in FIG. The reflected light beam 9 from the reflecting surface 12 that does not enter the surface of the optical element 6 travels downward with respect to the optical axis 2 as shown in FIG.

  A lens 5 is provided in the optical path of the illumination device. This lens 5 is a convex lens that is a convex surface on the other side and has a focal point corresponding to the second focal point 4 of the reflector 1, and its optical axis coincides with the optical axis 2 of the reflector 1. Therefore, the light beam from the second focal point 4 travels substantially parallel to the optical axis 2. For example, a biconvex lens or other converging lens such as a converging concave / convex type may be used. Parabolic mirror type reflectors are also possible. In this case, the optic axis is substantially orthogonal to the optic axis 2 or at least partially transversal, and its focal point is substantially merged with the second focal point 4 of the reflector 1. This type of reflector reflects light rays in a direction substantially parallel to its mouth axis, i.e. in a direction substantially transverse to or orthogonal to the optical axis 2.

  As can be seen from FIGS. 1 a and 1 b, the light beam 7 reflected from the reflector 1 is inverted with respect to the vertical and horizontal planes after passing through the second focus 4 and the optical element 6. The reference directions of the X, Y, and Z axes are shown in FIGS. 1a and 1b, and the Z axis direction corresponds to the optical axis 2 and substantially coincides with the projection direction of the illumination light. The X-axis direction is orthogonal to the Z-axis direction, and includes the cut surface of the reflector 1 and the moving axis 11 of the optical element 6. The Y-axis direction is a direction orthogonal to the above-described X and Y axes. As shown in FIG. 1b, the light beam 7 reflected by the reflector 1 intersects the optical axis 2 at the level of the optical element 6 and passes to the other side of the vertical plane, or again includes the optical axis 2 and the Y axis. Passes through a plane parallel to The same phenomenon occurs with respect to a plane parallel to the optical axis 2 and the X axis. FIG. 1a shows that the light beam 7 reflected by the reflector 1 intersects the surface in question and the light beam 9 not reflected by the optical element 6 passes to the other side of the surface. This phenomenon does not apply to rays 7 that have not been reflected at the level of the surface by the optical element 6, which remains on the same side of the surface.

  The optical element 6 may be constituted by four or more clearly distinguishable optical zones. This will be described in detail later with reference to FIGS.

  The first zone 6a is a plano-concave lens type and diffuses incident light rays. The principle of this phenomenon is shown in FIG. When the optical element 6 is arranged so as to be incident on the first zone 6a with respect to the light beam reflected from the reflector 1, the light beam is refracted and diffused by the traverse zone 6a, and most of the lens is Try to shine. This produces an extended beam path and, when combined with reducing the power consumption of the light source, corresponds to the DRL (daytime running lighting) function described above. The diffusion function of the first zone 6a can also be achieved by various other well-known techniques such as diffusion surface treatment or divergent microlens network.

  The second zone 6b of the optical element 6 is a reflecting surface called “vendor”. The optical operating principle of the zone 6b is shown in FIG. That is, the light beam incident on the surface 6b from the reflector 1 is reflected at an angle equal to the incident angle with respect to the surface and the vertical surface. These incident rays are therefore sent back to the upper part of the lens. On the other hand, the light beam that has not entered the reflecting surface 6b passes through the horizontal plane and proceeds to the lower half space without being detached like a lens. The boundary between the zone 6b that reflects the light beam and the zone of the horizontal plane through which the light beam passes without being removed is physically defined by the front edge and / or the rear edge, if appropriate, referred to as the cut-off edge of the zone 6b. It is formed. This delimits the reflected and non-reflected rays and affects the area of the light beam projected by the illuminating device.

  In fact, the light beam 8 reflected by the vendor is refracted at the top of the lens 5 as shown in FIG. The light beam reflected by the vendor produces light rays projected by the lens 5 and their area is different from the area produced by the light rays when not reflected by the vendor. The reflected light beam is projected by the upper portion of the lens 5 so as to be inclined slightly downward with respect to the optical axis, while the light beam projected by the lower portion of the lens 5 travels without being reflected. Inclined slightly upward with respect to the optical axis. This effect can also be caused, for example, by slightly tilting the vendor relative to the optical axis, making the vendor a complex non-planar, complicating the shape of the lens (or an elliptical reflector instead of the lens), and It is possible to enhance or influence by slightly offsetting the vendor in the Y-axis direction with respect to the optical axis.

  The optical element 6 may be moved in the Z-axis direction with respect to the optical axis by the actuator 14. By this movement, the cutoff edge is moved back and forth to modulate the cutoff height of the beam projected by the illumination device. This function is particularly suitable for guaranteeing a change in the inclination of the lighting device such as the posture of the vehicle on which the lighting device is mounted. This application is performed on an as-needed basis. For example, compensation when loading a heavy load is performed at the time of starting the vehicle, and during traveling to compensate for a change in the posture of the longitudinal surface during braking operation or acceleration, for example. Furthermore, the cut-off edge does not necessarily have to be straight and orthogonal to the optical axis. In fact, it is a tilted and complex profile that may optimize the area of projection and / or compensate for variations inherent in a particular optical element. The reflective optical zone 6b corresponds to a function called a low beam, and is used when encountering another company vehicle approaching from the facing direction, and the upper portion of the area of the projection beam is blocked. The area of the upper portion can be changed in the X-axis direction by the inclination of the cut-off edge (not shown).

  The third zone 6c of the optical element 6 is partially a transmission surface and partially a reflection surface (see FIG. 5). It is L-shaped, both legs of this L being a transmissive zone and the rest being a reflective zone. In FIG. 2, the reflective portion is hatched. This zone 6c corresponds to a function called “selectivity”, the projection area changes along the X axis, and the cut portion corresponds to a vehicle approaching from the opposite lane. The reflecting surface reflects the light beam from the reflector 1 and is then refracted by the lens 5. Therefore, the reflective surface of the third zone 6c limits the height of the left beam. A zone 6c shown in FIG. 2 corresponds to the headlight of the vehicle. The opposite headlight has a zone 6c that is symmetrical about the Z axis. Thus, each headlight in this function has a dark zone on the other headlight side, forming a very dark window or window in the two headlight illumination areas. These two zones 6c can be moved continuously in a controllable manner, depending on the position of the approaching vehicle, and this window is moved transversely along the X axis. The movement of the optical elements of the two headlights in this “select” function need not be the same. In fact, depending on the approaching vehicle, it is preferable or necessary to widen this window and move the optical elements of the two headlights in different ways.

  Alternatively, in order to continuously move the optical element 6 of the headlight, the entire optical element of the headlight may be turned around an axis substantially parallel to the Y axis. Further, the movement of the window along the Y axis may be movement by the optical axis or the Z axis. Such movement is preferred or necessary to make the window follow the approaching vehicle. The shape of the reflective portion may be different from that shown in FIG. The optical operating principle of the zone 6c is shown in FIG. Depending on the site of incidence of the rays into the zone 6c, some of the rays will cross the surface as is, with no or no change in path, and other rays will be reflected.

  The fourth zone 6d of the optical element 6 is a transparent surface or a surface that does not cause any optical function. The optical operating principle is shown in FIG. All rays travel with little or no change. This position corresponds to a function called high beam, that is, natural, and is a non-cut portion of the optical element.

  The lighting device described above ensures four lighting functions with a single light source. A transition from one function to another is made by the actuator 10. The actuator 10 moves the optical element 6 until the longitudinal direction of the corresponding zone comes to the center position of the focal point 4 of the optical element.

  Next, FIG.7 and FIG.8a-8d shows 2nd Embodiment of the illuminating device of this invention. The configuration of the illumination device is the same as the configuration of the first embodiment described above. The elliptical reflector 1 illuminates the half space, the light source 3 substantially illuminates the half space of the reflector 1, and the reflector 1. The optical element 6 ′ is movable in the transverse direction and the longitudinal direction at the level of the second focus 4 of the reflector 1, and the lens 5 is the second focus of the reflector 1. 4 is arranged. However, in the illumination device of the second embodiment, the optical element 6 ′ is different from the optical element 6 of the first embodiment. The optical element 6 ′ includes two optical zones, ie, a second zone including a first transparent zone 6a ′, a major reflection portion 6b, and a minor transmission portion 6c ′. The boundary between the reflective portion 6b ′ and the transmissive portion 6c ′ corresponds to a cutoff edge. This device has four functions schematically shown in FIGS. 8a to 8d. In FIGS. 8a to 8d, the optical element 6 ′ is shown enlarged for the sake of clarity.

  The first function shown in FIG. 8 a operates by moving the transparent zone 6 a ′ in the transverse direction to the level of the second focus 4 of the reflector 1. This first function is called high beam, and the lighting device produces a natural projection area.

  In the second function shown in FIG. 8b, the second focal point 4 through which the incident light from the reflector 1 passes spans the zones 6a ′ and 6b ′. This function is referred to as “selection”, and changes the projection area in the X-axis direction so that the cut portion corresponds to the vehicle coming in the opposite direction cull. The position of the optical element in the transverse direction is continuously changed to “follow” the vehicle approaching from the opposite direction. Actually, a part of the light beam reflected by the reflector is reflected by the reflecting surface 6b ′. Reflection by a reflecting surface called a vendor lowers the height of the corresponding portion of the projection area. Therefore, the height of this area becomes lower on the left side. As the optical element 6 'is further moved to the left, the reflecting surface that acts is increased, the decrease in height to the right is increased, and the area of the projection beam is changed. This function can be combined with a second symmetric headlight (with respect to the part of the optical element used to form the selected beam) to form a dark window by applying a cut-off and lower the beam to the oncoming vehicle The angular position is changed with respect to the vehicle illuminated by the lighting device. Similar to the above example, the movement of the window along the Y axis may be combined with the movement along the optical axis or the Z axis. This movement is preferred or necessary in order to make the approaching vehicle follow the window.

  The third function is shown in FIG. 8c, where the reflective triangle of zone 6c ′ acts. It produces a cut over the entire width of the projected area. This is a function called “tourist”, which is a case where the vehicle travels normally in the left lane and travels to an area where a person turns right. The projected beam is cut across its entire width to avoid blinding the left driver with low beam or “pass” type illumination.

  The fourth function is shown in FIG. 8d, and partially operates the transparent zone 6c ′. In this position, a part of the light beam coming from the right part of the reflector 1 meets the transparent part 6c 'and crosses it, and is refracted and projected towards the upper left part of the beam. Corresponding light rays coming from the left part of the reflector are reflected by the reflecting surface 6b '. Some of the rays may pass beyond the front edge of the reflective surface. As a result, the area of the projected ray is limited in height by the front cut-off edge of the reflecting surface, which is reversed. The portion of the cut-off edge before the inclined edge limits the height of the right portion of the projected area, and the inclined edge limits the height of the left portion of the projected area to be smaller and sequentially increased. This is a low beam function for a left-hand drive vehicle.

  With this lighting device, a vehicle headlight having four functions can be realized very easily. As an optical element, a transparent surface and a reflection part may be simply provided. The reflection part can be realized very simply by simply metallizing the back surface, that is, metallizing. Therefore, it is useful to generate several optical position reference markers 13 at the same time as reflecting surfaces. These markers 13 are shown in FIG. 8e. The optical reference marker 13 is effective for this application and is very simple to manufacture.

  It should be noted that various combinations of these lighting functions are possible. Furthermore, by providing a transparent color zone at the level of the optical element, other functions such as flashlight are possible. In this case, it may be necessary to reduce the power on the plateau. Also, a “fog” function is possible, for example by providing a large reflection zone, ie having a more advanced cut-off edge (towards the lens) and further directing the projection beam downwards. Furthermore, note that a reflective surface is not required. In that case, for example, an optical element having a divergent zone for the DRL function and a transparent zone transparent zone for the high beam function is provided.

  Also, the movement of the optical element must be transversal, i.e. transverse, but need not be translational, i.e. translation. In fact, depending on various parameters such as the available space and the number of functions that can be provided, an optical element that is somewhat curved in the plane of its surface is provided and rotated, for example behind a reflector and a light source. You may rotate around the center.

  Furthermore, the surface of the optical element constituted by a plurality of different optical zones is not necessarily flat. Rather, it may be a slightly more complex surface depending on the optical effect desired.

  The transversal movement of the optical element need not be exactly perpendicular to the optical axis, and need not necessarily be in a plane that defines the half space of the reflector. For example, it may be transversal and movement in a non-orthogonal direction, for example, movement within a plane that forms a predetermined angle with a plane that defines the half space of the reflector, depending on various parameters such as the maximum space. Also, the optical element may be placed slightly away from the plane that defines the half space of the reflector due to, for example, different imperfections and / or variations in the optical elements.

  In the above-described embodiment, a single light source is used. Where movable optical elements are mechanically linked to each other and moved by a single actuator, multiple light sources may be used, or multiple similar devices may be used in parallel.

  In the following, possible embodiments and effective features of the headlight illumination device according to the present invention are listed. First, on the surface of the second optical element, at least two zones are arranged side by side in the transversal direction with respect to the optical axis of the reflector, and each zone is a reflective, transparent, colored, diffusive or divergent lens. Or at least one type of these spatial combinations.

  According to an advantageous feature of the invention, the second moving optical element moves substantially in a horizontal plane, preferably in a direction orthogonal to the optical axis and in a direction parallel to the optical axis.

  According to an advantageous feature of the invention, the surface of the second optical element is elongate, preferably rectangular with a longitudinal axis, and has at least two zones distributed along the longitudinal direction. The optical properties of these zones are different and are of a type selected from reflective, transparent, colored, diffuse or divergent lenses or combinations thereof.

  According to an advantageous feature of the invention, the second optical element is preferably movable in a direction parallel to the optical axis of the reflector.

  Further, according to an advantageous feature of the present invention, the surface of the second optical element has an elongated shape, and is curved along the main surface, preferably slightly in an arc shape, and reflected along the curved surface. Having different types of optical properties selected from: luminescent, transparent, colored, diffusing or diverging lenses, or combinations thereof.

  According to an advantageous feature of the invention, the second optical element is rotationally moved with a sufficiently large radius to ensure that the different zones move transversally with respect to the optical axis of the reflector.

  According to an advantageous feature of the invention, the surface of the second optical element comprises a reflection zone having an edge called the cut-off edge that intersects the optical axis of the reflector, preferably on the opposite side of the reflector. Yes.

  According to an advantageous feature of the invention, the cutoff edge has a variable cross section in a direction substantially perpendicular to the optical axis of the first reflector.

  According to an advantageous feature of the invention, the cutoff edge has a constant cross section in a direction substantially perpendicular to the optical axis of the first reflector.

  According to an advantageous feature of the invention, the reflector consists of a half-spaced, preferably arc-shaped, curved reflecting surface bounded by a plane, the first and second focal points of the reflector being in the vicinity of the plane. The second optical element is moved in this plane parallel to the plane.

  According to an advantageous feature of the invention, the second optical element is moved to at least two index positions.

  According to an advantageous feature of the invention, the second optical element is preferably moved continuously between two index positions.

  According to an advantageous feature of the invention, the surface of the second optical element comprises at least two optical reference points corresponding to the index positions mentioned above, which are preferably realized by metallization.

  According to an advantageous feature of the invention, the second optical element is moved in parallel and / or rotationally by an electric motor, for example a stepping motor, a piezoelectric motor or a solenoid, preferably of the stepping motor, piezoelectric motor or solenoid type. By a combination of two actuators, or by a single piezoelectric motor with appropriately controlled drive frequency.

  According to an advantageous feature of the invention, the second optical element has an optical axis that preferably intersects the optical axis of the reflector, preferably at a right angle.

  According to an advantageous feature of the invention, the first optical element is a lens having an optical axis substantially corresponding to the optical axis of the reflector.

  According to an advantageous feature of the invention, the second optical element is translated in the same direction as the optical axis of the reflector, preferably by an actuator.

  According to an advantageous feature of the present invention, the actuator of the second optical element is provided with a device for controlling the actuator in the direction of the optical axis, preferably dynamically movable, and the posture of the vehicle is changed by the reflecting surface of the second optical element. To compensate.

  The vendor according to the invention is preferably planar and horizontal, optionally with a transparent zone.

  The above-mentioned vendor can move in the horizontal direction.

  The vendor described above is preferably movable in rotation about a separate vertical axis.

  The present invention also relates to a headlight or rear light of a vehicle provided with the device as described above.

  Furthermore, the present invention also relates to a vehicle provided with a headlight or a rear light as described above.

DESCRIPTION OF SYMBOLS 1 Reflector 2 Optical axis 3 Light source (1st focus position of a reflector)
4 Second focus of reflector 5 First optical element (lens)
6, 6 '2nd optical element 6a, 6b, 6c, 6d Zone 10 Actuator (electric motor)
12 Reflecting surface 14 Actuator

Claims (16)

A reflector having a first focal point, a second focal point, and an optical axis passing through the first and second focal points, and a light beam disposed and emitted in the vicinity of the first focal point of the reflector to the vicinity of the second focal point. A first optical system having a light source that reflects, a focal point located near the second focal point of the reflector and an optical axis, and a beam emitted from the light source and reflected by the reflector as a beam along the optical axis And a second optical element that has a substantially flat surface and is incident at an angle of incidence when the light beam emitted from the light source and reflected by the reflector is disposed near the second focal point of the reflector. In the headlight illumination device,
The headlight illumination characterized in that the second optical element moves in the plane at least in a direction transverse to the optical axis of the reflector to move the zone out of the light beam. apparatus.   The surface of the second optical element has at least two zones arranged transversely to the optical axis of the reflector, each zone being a reflective, transparent, colored, diffusing or diverging lens, Or it is at least 1 type selected from these combinations, The illuminating device for headlights of Claim 1 characterized by the above-mentioned.   The surface of the second optical element has a substantially rectangular elongated shape, and its longitudinal axis has at least two zones selected from a reflective, transparent, colored, diffusing, or diverging lens or a combination thereof. The headlight illumination device according to claim 1 or 2.   The said 2nd optical element is substantially horizontal, and can be translated into the surface which is a synthetic | combination direction of a parallel and orthogonal direction with the optical axis of the said reflector, It is characterized by the above-mentioned. Headlight lighting device.   The headlight illumination device according to claim 4, wherein the second optical element can be translated in a direction substantially orthogonal to the optical axis of the reflector.   The surface of the second optical element is elongated and curved in a substantially arc shape in the longitudinal direction, and has at least two optical characteristics selected from a reflective, transparent, colored, diffused, or divergent lens, or a combination thereof. 6. The headlight illumination device according to claim 1, wherein the zones are distributed along the curve.   The headlight according to claim 6, wherein the second optical element is rotated and moved with a large radius to move the zone in a direction transverse to the optical axis of the reflector. Lighting device.   8. The surface of the second optical element has an edge called a cut-off edge that intersects the optical axis of the reflector, preferably on the opposite side of the reflective zone reflector. The lighting apparatus for headlights in any one.   9. The headlight illumination device according to claim 8, wherein the cut-off edge has a variable profile in a direction substantially orthogonal to the optical axis of the reflector.   9. The headlight illumination device according to claim 8, wherein the cut-off edge has a constant profile in a direction substantially orthogonal to the optical axis of the reflector.   The reflector includes a half-space approximately elliptical curved reflecting surface bounded by a plane, and the first and second focal points of the reflecting surface are located in the vicinity of the plane, and the second optical element is The headlight illumination device according to claim 1, wherein the headlight illumination device can move in the plane or in parallel with the plane.   The headlight illumination device according to claim 1, wherein the second optical element can move to at least two index positions.   13. The headlight illumination device according to claim 12, wherein the second optical element is a reflection type whose optical axis intersects the optical axis of the reflector preferably at a right angle.   The headlight illumination device according to claim 13, wherein the first optical element is a lens having an optical axis substantially corresponding to an optical axis of the reflector.   The headlight illumination device according to claim 1, wherein the second optical element is further translated by an actuator along an optical axis of the reflector.   16. The second optical element is moved in parallel and / or rotated by an electric motor such as a stepping motor, a piezoelectric motor, or a solenoid, preferably a single piezoelectric motor controlled by a driving frequency. The lighting apparatus for headlights in any one of.

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