EP0937942B1 - Phare du type projecteur - Google Patents

Phare du type projecteur Download PDF

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Publication number
EP0937942B1
EP0937942B1 EP98121941A EP98121941A EP0937942B1 EP 0937942 B1 EP0937942 B1 EP 0937942B1 EP 98121941 A EP98121941 A EP 98121941A EP 98121941 A EP98121941 A EP 98121941A EP 0937942 B1 EP0937942 B1 EP 0937942B1
Authority
EP
European Patent Office
Prior art keywords
light
state
headlight
mask device
reflector
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
Application number
EP98121941A
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German (de)
English (en)
Other versions
EP0937942A2 (fr
EP0937942A3 (fr
Inventor
Heike Eichler
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.)
Marelli Automotive Lighting Reutlingen Germany GmbH
Original Assignee
Automotive Lighting Reutlingen GmbH
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 Automotive Lighting Reutlingen GmbH filed Critical Automotive Lighting Reutlingen GmbH
Publication of EP0937942A2 publication Critical patent/EP0937942A2/fr
Publication of EP0937942A3 publication Critical patent/EP0937942A3/fr
Application granted granted Critical
Publication of EP0937942B1 publication Critical patent/EP0937942B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • 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
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/64—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices
    • F21S41/645—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices by electro-optic means, e.g. liquid crystal or electrochromic devices
    • 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof

Definitions

  • the invention relates to a headlight for vehicles according to the projection principle.
  • Such a headlight is through the DE 40 02 576 A1 known.
  • This headlamp is used to selectively produce the low beam or the high beam.
  • the headlamp has a light source and a reflector, is reflected by the emitted light from the light source.
  • a lens is arranged in the beam path of the light reflected by the reflector, and an aperture device is arranged between the reflector and the lens.
  • the diaphragm device is changeable between a first state for the operating position of the headlight for dipped beam, and a second state for the operating position of the headlight for high beam.
  • the diaphragm device In the first state, a part of the light reflected by the reflector is shielded by the diaphragm device and generates a light-dark boundary of the low-beam beam exiting from the headlight. In its second state, at least only a minor part of the light reflected by the reflector is shielded by the diaphragm device.
  • the change of the diaphragm device between its first and second state can be done by a movement thereof or the diaphragm device can at least partially have a variable light transmittance, wherein the light transmittance in the first state of the aperture device is low and higher in the second state.
  • a disadvantage of this known headlamp is that this can be designed either only optimally for generating the low beam or optimally for the production of the high beam, but no design for optimal generation of both light functions is possible because the requirements here are partly in opposite directions. If the headlamp is optimally designed for the generation of the low beam, with the diaphragm device in its first state, no effective high beam is generated in the operating position for high beam with the diaphragm device in its second state, since too low maximum illuminance due to exiting the headlight high beam be generated.
  • the diaphragm device must be arranged in its first state for the operating position of the headlamp for low beam such that a large part of the light reflected from the reflector is shielded, since otherwise the dipped beam would produce inadmissibly high illuminance. Due to the arrangement of the diaphragm device in its first state, which is required in this case, significant aberrations would also occur through the lens, such as color fringes and overshoots, which would impair the overall quality of the low-beam beam. In addition, the headlamp would be set in the operating position for dipped headlights such that the light-dark boundary occupies the prescribed position, but then in the operating position for high beam the Areas with the maximum illuminance would be too high.
  • One from the US 5,339,226 known headlight includes a shutter with two separate aperture devices, through which a sharp cut-off line is generated. Consequently, both diaphragm devices are arranged in the region of the focal point of the lens.
  • the inventive headlight for vehicles according to the projection principle with the features of claim 1 has the advantage that it can be designed such that in the second operating position of the headlamp with the aperture devices in their second state sufficient maximum illuminance levels are generated in the first Operating position of the headlamp are reduced by the at least one further aperture device in its first state to the permissible for the then emitted from the headlamps Lichtlichtung BlechtungsungsSystemrete.
  • the generation of the light-dark border in the first The operating position of the headlamp is effected by the first diaphragm device in its first state and the position of the areas with maximum illuminance values can be selected as required for the light beam emitted by the headlamp in the second operating position, without regard to the light beam emitted in the first operating position of the headlamp permissible lower maximum illuminance values maintained by the shielding of a portion of the light generating the maximum illuminance values by the second diaphragm device.
  • the embodiment according to claim 2 offers the advantage that the light-dark boundary can be generated by the first diaphragm device uninfluenced by the at least one further diaphragm device.
  • the training according to claim 4 offers the advantage that in the Shading by the further aperture device a homogeneous transition is achieved.
  • the embodiment according to claim 5 improved illumination of the own traffic side is achieved in front of the vehicle.
  • the embodiment of claim 7 allows a simple construction of the headlamp, since the two aperture devices can be moved with an actuator.
  • FIG. 1 shows a headlight in a vertical longitudinal section with diaphragm devices according to a first embodiment in a first state for low beam
  • Figure 2 shows the headlamps with the diaphragm devices in a second state for high beam
  • Figure 3 shows in part the diaphragm devices according to a modified embodiment
  • Figure 4 the Figure 5 shows a diaphragm device in a cross section along line VV in Figure 1
  • Figure 6 the diaphragm devices of the headlamp in a perspective view according to a second embodiment
  • Figure 7 arranged in front of the headlight Measuring screen when illuminated by the passing out of the headlight Abbleriumtbündel
  • Figure 8 shows the screen when illuminated by the exiting the headlight beam.
  • the headlight has a concave reflector 10, in which in the apex region of a light source 12 is inserted.
  • the light source 12 may be an incandescent lamp or, preferably, a gas discharge lamp, and its luminous element, that is to say the incandescent filament or the arc, is arranged approximately parallel to the optical axis 11 of the reflector 10.
  • the reflector 10 is shaped to reflect light emitted by the light source 12 as a converging light beam.
  • the reflector 10 may have an at least approximately ellipsoidal shape or any other, for example numerically determined form.
  • the light source 12 is arranged at least approximately in the first focal point F1 of the reflector 10 or an area of its shape at least approximately.
  • a lens 16 is arranged at a distance therefrom.
  • the lens 16 is designed as a converging lens and has, for example, opposite the light exit direction 14, the reflector 10 facing an approximately flat side 17 and in the light exit direction 14 a convex curved side 18.
  • the side 18 of the lens 18 may be curved spherically or preferably aspherically, whereby aberrations of the lens 16 can be corrected by the aspheric curvature.
  • the curvature of the side 18 of the lens 16 is determined so that light reflected by the reflector 10 is deflected as it passes through the lens 16 in a predetermined manner.
  • the lens 16 may be made of glass or translucent plastic and is held in a manner not shown, for example on a support 10 connected to the reflector.
  • a first diaphragm device 20 is also arranged.
  • the first aperture device 20 is formed opaque and consists for example of sheet metal or plastic.
  • the first diaphragm device 20 is arranged substantially below the optical axis 11 and formed flat.
  • the first diaphragm device 20 has an upper edge 22.
  • the first diaphragm device 20 is movable between a first position which it assumes in the operating position of the dipped-beam headlamp and a second position which it assumes in the operating position of the main-beam headlamp.
  • the first diaphragm device 20 is preferably arranged in the region of the focal point F3 of the lens 16 or of the lens 16 at least approximately spherical lens.
  • the first diaphragm device 20 In its first position for dipped beam, the first diaphragm device 20 is arranged approximately perpendicular to the optical axis 11, as shown in FIG. 1, and its upper edge 22 is arranged approximately at the level of the optical axis 11. However, the upper edge 22 of the first diaphragm device 20 may also be arranged slightly below or slightly above the optical axis 11. In its first position for low beam according to FIG. 1, part of the light reflected by the reflector 10 is shielded by the first diaphragm device 20, thereby producing a light-dark boundary of the light subsequently passing through the lens 16. The position and the course of the light-dark boundary is determined by the upper edge 22 of the first diaphragm device 20. The light-dark boundary created by the top edge 22 of the first aperture device 20 is imaged by the lens 16.
  • At least one second diaphragm device 30 is arranged offset in the direction of the optical axis 11 relative to the first diaphragm device 20.
  • a second diaphragm device 30 is provided, which is arranged in the light exit direction 14 after the first diaphragm device 20 and which consists of opaque material such as sheet metal or plastic.
  • the second diaphragm device 30 is also movable between a first position for the operating position of the dipped-beam headlamp and a second position for the operating position of the high-beam headlamp.
  • the second diaphragm device 30 is shown in its first position for dipped beam, in which the upper edge 32 is disposed approximately at the level of the optical axis 11 or slightly below or above it.
  • part of the light reflected by the reflector 10 and passing past the first diaphragm device 20 is shielded by the second diaphragm device 30.
  • the offset in the light exit direction 14 arrangement of the second aperture device 30 is generated by this no sharp light-dark boundary, but causes a weakening of the light passing through the lens 16.
  • the aperture devices 20,30 are shown in their second positions for the operating position of the headlight for high beam.
  • the diaphragm devices 20, 30 are at least less widely arranged in the beam path of the light reflected by the reflector 10 than their first positions according to FIG. 1, so that at least only a smaller part of the light reflected by the reflector 10 is shielded by them.
  • the aperture devices 20,30 are completely moved out of the beam path of the reflected light from the reflector 10, so that the entire of the Reflector 10 reflected light can pass through the lens 16.
  • the diaphragm devices 20, 30 can be movable between their two positions, for example transversely to the optical axis 11, or be pivotable about an axis 34 extending transversely to the optical axis 11.
  • the movements of the diaphragm devices 20,30 are effected by at least one adjusting element 36 which acts on these and is activated by a control device 38.
  • the adjusting element 36 may be embodied for example as an electric motor, as an electromagnet, as a hydraulic or pneumatic actuator or in any other way.
  • the two diaphragm devices 20,30 can be arranged separately from each other, in which case for their movements between their two positions a common, acting on both diaphragm devices 20,30 adjusting element 36 or separate adjusting elements 36 may be provided.
  • both diaphragm devices 20,30 are coupled together, so that their movement can be effected by a common Vers jacket 36 and only a storage for the aperture devices 20,30 is required in the headlight.
  • the adjusting element 36 is activated by the control device 38 when switching the headlamp between its operating position for low beam and its operating position for high beam.
  • the first aperture device 20 may be mounted in the headlight to facilitate movement between the two positions, and the second aperture device 30 may be rigidly connected to, or integral with, the first aperture device 20 be educated.
  • the second diaphragm device 30 is connected at its lower edge to the first diaphragm device 20, proceeds firstly from the first diaphragm device 20 in the light exit direction 14 and then at a distance from the first diaphragm device 20 approximately perpendicular to the optical device
  • the second diaphragm device 30 is also connected at its lower edge to the first diaphragm device 20 and extends from there obliquely upward and in the light exit direction 14 to its upper edge 32nd
  • the headlamp is shown in a horizontal longitudinal section, in which the reflector 10 with the light source 12 and the lens 16 and the aperture devices 20,30 are shown in their first positions for low beam.
  • the first diaphragm device 20 extends approximately perpendicular to the optical axis 11.
  • the second diaphragm device 30 may also be shown as a dashed line in FIG. 4 approximately perpendicular to the optical axis 11, but may also be in a direction shown in FIG. 4 with solid lines in the optical direction Axis 11 curved.
  • the second diaphragm device 30 in this case runs in particular with a concave curvature in the light exit direction 14. The advantages of this curved design of the second diaphragm device 30 are explained below in the operation of the headlight.
  • the second diaphragm device 30 is shown in a view in the direction of the optical axis 11.
  • the upper edge 32 of the second diaphragm device 30 may in the first position for low beam, for example, about horizontally and as already stated at the level of the optical axis 11 or slightly below or above it.
  • the upper edge 32 may have a deviating from the horizontal course shown in dashed lines in Figure 5.
  • the upper edge 32 on the side past the light reflected by the reflector 10 and illuminating the oncoming traffic side has an approximately horizontal section 32a which extends at the level of the optical axis 11 or slightly below or above it.
  • the oncoming traffic side is the left side in front of the vehicle and due to the reversed image of the upper edge 32 through the lens 16, the horizontal portion 32a of the upper edge in the light exit direction 14 as shown in FIG 5 is arranged right of the optical axis 11.
  • the upper edge On the side of the second diaphragm device 30, past the light reflected from the reflector 10 and illuminating its own traffic side, the upper edge has an inclined section 32b extending obliquely downwards from the horizontal section 32a.
  • the inclined portion 32b of the upper edge is disposed on the left of the optical axis 11. If the headlamp is designed for left-hand traffic, then the arrangement of the two sections 32a, b of the upper edge is mirror-inverted with respect to the optical axis 11 to the arrangement shown in FIG.
  • the first diaphragm device 20 and / or the second diaphragm device 30 may also be movable in another way in addition to their above-described possibility of movement between their first and second state for switching between dipped beam and main beam.
  • a rotation about the optical axis 11 or an axis extending approximately parallel thereto be provided, whereby a change in the position of the upper edges 22 and 32 of the aperture devices 20,30 is made possible.
  • the aperture devices 20,30 are each arranged such that the higher-lying areas of the upper edges 22,32 produce the light-dark boundary on the opposite side.
  • the entire headlamp unit with reflector 10, light source 12, lens 16 and the diaphragm devices 20,30 about the optical axis 11 or an approximately parallel to this axis extending be rotated.
  • FIG. 6 shows the two diaphragm devices 120, 130 according to a second exemplary embodiment.
  • the basic structure of the headlight here is unchanged from the first embodiment, however, the aperture devices 120,130 are not movable but fixedly arranged in the headlight.
  • the diaphragm devices 120, 130 have at least regions 125, 135 with variable translucency, which are arranged in the same way as the diaphragm devices 20, 30 described above in their first position for dipped-beam light.
  • the regions 125, 135 are thus arranged essentially below the optical axis 11 and extend to the level of the optical axis 11 or end slightly below or above it.
  • variable light transmission of the region 125 of the diaphragm device 120 can be achieved, for example, by providing a translucent basic body in the form of a disk 121 with a coating 127 which, for example under the influence of an electrical voltage, changes its light transmission between a state of high light transmission and a state of lesser light transmission.
  • the coating 127 may consist of so-called electrochromic materials.
  • the disk 121 can be provided only in the region 125 or extend over a larger part of the beam path of the light reflected by the reflector 10 and have the coating 127 only in the region 125.
  • the second aperture device 130 may be constructed in the same way.
  • the diaphragm device 130 in the region 135 has two spaced apart in the direction of the optical axis 11 to each other arranged translucent discs 131, between which a material 137 is arranged, which is variable in its translucency, for example under the influence of an electrical Tension.
  • a material 137 for example, liquid crystals may be used here, which change their orientation under the influence of an electric voltage, so that the material is switchable between a state of high light transmittance and a state of lower light transmittance.
  • the disks 131 may in turn be provided only in the area 135 or may extend over a larger part of the beam path reflected by the reflector 10, but the material 137 is arranged only in the area 135.
  • the first aperture device 120 may be constructed.
  • the areas are 125.135 of the two aperture devices 120,130 in their state of low light transmittance or are opaque, so that a part of the reflected light from the reflector 10 is shielded by this as in the first embodiment.
  • the light-dark boundary of the low beam is generated and through the region 135 of the second diaphragm device 130 is a Shields part of the passing light on the area 125 of the first aperture device 120 to reduce the maximum illuminance values.
  • the areas are 125.135 of the aperture devices 120,130 in their state of high light transmittance, so that light reflected by the reflector 10 can pass through this and can pass through the lens 16.
  • the control of the voltage applied to the areas 125.135 of the diaphragm devices 120.130 electrical voltages is performed by a control device 136, which is controlled with the switching between the operating position for dipped beam and the operating position for high beam of the headlamp.
  • the position and the course of the light-dark boundary of the dipped beam emanating from the headlight in the operating position for dipped beam are determined by the upper edge 22 of the first diaphragm device 20 and the upper edge 122 of the region 125 of the first diaphragm device 120.
  • FIG. 6 shows a profile of the upper edge 122 of the region 125 of the first diaphragm arrangement 120, in which the edge on the side of the optical axis 11, on which light reflected by the reflector 10 and illuminating the oncoming traffic side passes, is approximately at the level of the optical Has axis 11 or slightly below this approximately horizontal portion 122a.
  • the edge 122 is reversely imaged by the lens 16, so that the portion 122a in the illustrated embodiment is located to the right of the optical axis 11.
  • the edge 122 points a portion 122b descending to the left from the horizontal portion 122a.
  • the arrangement of the sections 122a, b with respect to the optical axis 11 is mirror-inverted to the arrangement shown in Figure 6.
  • the range 125 and 135 can also be formed in at least one of the aperture devices 120,130 according to the second embodiment, the range 125 and 135 such that each of the higher portion 122a and 132 of the edge 122 and 132, the light-dark boundary on the opposite side generates so that a switch between right-hand traffic and left-hand traffic is possible.
  • the edge 122 of the first aperture device 120 may also have a horizontal portion approximately on both sides of the optical axis 11, which are interconnected by an inclined portion, wherein the edge on the side on which the oncoming traffic side illuminating light passes this is arranged higher than on the other side.
  • the upper edge 132 of the region 135 of the second diaphragm device 130 can extend horizontally as above or have sections running at different heights, as shown in FIG.
  • the entire headlamp unit with reflector 10, light source 12, lens 16 and the aperture devices 120,130 about the optical axis 11 or an approximately parallel to this axis is rotatable to the position of Aperture devices 120,130 to change, for example, a switch between right and left traffic.
  • FIGS. 7 and 8 each show a measuring screen 80 arranged at a distance in front of the headlight, which is illuminated by the light beam emitted by the headlight.
  • the vertical center plane of the measuring screen 80 is denoted by VV and its horizontal center plane is designated HH.
  • the vertical center plane VV and the horizontal center plane HH intersect at point HV.
  • the optical axis 11 of the reflector 10 is inclined downwards by about 1% with respect to the point HV.
  • a dipped beam is emitted by the headlamp, which illuminates the measuring screen 80 in a region 82.
  • the region 82 is delimited at the top by a light-dark boundary which is produced by the upper edge 22 of the first diaphragm device 20 or the upper edge 122 by the sections 122a, b of the first diaphragm device 120.
  • the light-dark boundary has corresponding to the upper edge 22 and the upper edge 122 on the opposite side, that is for right traffic the left side of the screen 80, a slightly below the horizontal center plane HH approximately horizontally extending section 84 and on the own traffic side, that is for Right-hand traffic on the right-hand side of the measuring screen 80, a section 86 rising to the right from the horizontal section 84.
  • the section 84 of the light-dark boundary is defined by the section 122a of the edge 122 and section 86 is generated by section 122b.
  • the highest illuminance values are present, which may amount to a maximum of about 40 to 70 lux in accordance with the legal regulations in force in Europe. These maximum allowable illuminance values are maintained by shielding a portion of the light reflected from the reflector 10 and passing past the first aperture device 20 or 120 by the second aperture device 30 or 130, which would illuminate the measuring screen 80 in the zone 88. At the edges of region 82, the illuminance values decrease from the maximum values present in zone 88.
  • a plurality of lines 83 of the same illuminance, so-called isolux lines, are entered in order to clarify the distribution of the illuminance.
  • the region 82 extends in the horizontal direction to about 30 ° to 40 ° either side of the vertical center plane VV, where there are still illuminance values of about 1 lux.
  • a high beam is emitted, which illuminates the measuring screen 80 in Figure 8 in a region 92.
  • the highest illuminance values are present, which are approximately 100 to 180 lux.
  • a plurality of isolux lines 93 are again entered to clarify the distribution of illuminance.
  • the region 92 extends in a horizontal direction to about 30 to 40 ° on either side of the vertical center plane VV, where Illuminance values of about 1 lux are present.
  • the extent of the region 92 in the horizontal direction at least substantially corresponds to the extent of the region 82 in the horizontal direction, since this is not influenced by the diaphragm devices 20, 30 or 120, 130. Because the first diaphragm device 20 is in its second position or the first diaphragm device 120 is in its second translucent state, however, the region 92 does not have the light-dark boundary 84, 86 of the region 82 and in that the second diaphragm device 30 In its second position and the second aperture device 130 is in their second translucent state, the zone 98 of the maximum illuminance values of the area 92 is higher and around the point HV than the zone 88 of maximum illuminance values of the area 82.
  • the headlamp according to the invention can thus be designed so that a high beam is emitted by this in the operating position for high beam, which illuminates the screen 80 as shown in Figure 8 in the area 92, as prescribed by law in the zone 98 to the point HV maximum illuminance values of sufficient height are present.
  • the first aperture device 20 or 120 produces the light-dark boundary 84, 86 of the region 82 as shown in FIG. 7, and the second illumination device 30 or 130 reduces the maximum illumination intensity values to the level required for the Low beam is permitted by law.
  • the second diaphragm device 30 which is curved in the direction of the optical axis 11 described above with reference to FIG.
  • first diaphragm device 20,120 and the second diaphragm device 30,130 are constructed differently, wherein one of the diaphragm devices is designed to be movable as in the first embodiment and the other of the diaphragm devices is designed as fixed in the second embodiment with variable light transmittance.
  • the reflector 10 with the light source 12 and the lens 16 and the diaphragm devices 20,30 and 120,130 can be arranged in a housing, not shown, of the headlight.
  • In the beam path of the light entered through the lens 16 may be arranged another disc which can serve as a cover of the headlamp and which may be smooth so that light passes unaffected by this, or may have optical profiles, by the light passing therethrough distracted and / or scattered.
  • more than two aperture devices 20,30 and 120,130 can be provided in the headlight.
  • the headlamp according to the invention is not limited thereto, but this generally allows the optional emission of different light bundles, with the aperture devices 20,30 and 120,130 in their first state generally emitted a light beam with a generated by the first aperture device 20 and 120 light-dark boundary is and is emitted with the aperture devices 20,30 and 120,130 in their second state, a light beam with greater range and higher maximum illuminance.
  • the second diaphragm device 30 or 130 can be changed independently of the first diaphragm device 20 or 120 between its first and second state, so that even if the first diaphragm device 20 or 120 is in its first state and the light-dark boundary is generated, the second diaphragm device 30 or 130 is in its second state and thus the emerging from the headlight beam has the light-dark boundary, but higher maximum illuminance.
  • the second diaphragm device 30 comprises a plurality of parts or the second diaphragm device 130 has a plurality of regions 135 which are movable independently of one another or can be switched between their transparent and opaque state, thus deliberately providing a partial shielding of the reflector 10 of reflected light to enable.
  • at least one of the diaphragm devices 20,30 or 120,130 not only between two. States is changeable but steplessly or in several stages between different states are changeable, in order to vary the part of the light reflected by the reflector 10, which is shielded by the aperture devices 20,30 and 120,130, respectively.
  • the illuminance levels on the own traffic side and on the oncoming traffic side in be varied in different ways.
  • the extent of the area 82 or 92 of the measuring screen 80 illuminated by the light beam emitted by the headlight can also be set a one-sided wide extension, preferably when cornering and in the direction of the road course.
  • a wide extension is particularly advantageous when cornering or poor visibility while a concentration is particularly advantageous at high speed.
  • It can also be provided that is emitted by the headlamp in the first position of the aperture devices 20,30 and 120,130 a fog light beam with a continuous horizontal light-dark boundary and wide spread.

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

Claims (11)

  1. Phare de véhicule fonctionnant selon le principe d'un projecteur comprenant
    une source lumineuse (12),
    un réflecteur (10) réfléchissant la lumière émise par la source lumineuse (12),
    une lentille (16) installée dans le trajet des faisceaux de la lumière réfléchie par le réflecteur (10), et
    au moins un premier dispositif écran (20 ; 120) installé entre le réflecteur (10) et la lentille (16), et qui peut varier au moins entre un premier état pour une première position de fonctionnement du phare et au moins un second état pour une seconde position de fonctionnement du phare,
    le premier dispositif écran (20 ; 120, dans son premier état, coupant une partie de la lumière réfléchie par le réflecteur (10) et formant une limite clarté/obscurité (84, 86) pour le faisceau de lumière émis par le phare, et
    dans son second état, il coupe une partie moindre de la lumière réfléchie par le réflecteur (10) que dans le premier état, et
    dans la direction de l'axe optique (11), il est prévu au moins un autre dispositif écran (30 ; 130) décalé par rapport au premier dispositif écran (20 ; 120), et qui peut varier entre au moins un premier état et au moins un second état,
    au moins cet autre dispositif écran (30 ; 130) coupe au moins dans son premier état, une partie de la lumière réfléchie par le réflecteur (10) et passant à côté du premier dispositif écran (20 ; 120) dans son premier état, pour réduire des valeurs d'intensité d'éclairage maximal générées par le faisceau lumineux sortant du projecteur occupant sa première position de fonctionnement, et
    au moins cet autre dispositif écran (30 ; 130) occupant son second état, coupe une partie de la lumière réfléchie par le réflecteur (10) inférieure à celle coupée dans son premier état,
    caractérisé en ce que
    le premier dispositif écran (20 ; 120) est installé dans la zone d'un foyer (F3) de la lentille (16),
    l'arête supérieure (32) ou le bord supérieur (132) du second dispositif écran (30 ; 130) se trouve sous l'axe optique (11) du réflecteur (10),
    l'arête supérieure (22) ou le bord supérieur (122) du premier dispositif écran (20 ; 120) générant sur un écran de mesure (80) installé à une certaine distance devant le projecteur, une limite supérieure clarté/obscurité (84, 86) d'une distribution de lumière dans une zone (82) de la distribution de lumière et
    le second dispositif écran (30 ; 130) coupe une partie de la lumière passant sur le premier dispositif écran (20 ; 120), et qui génèrerait sinon une zone (88) d'intensité d'éclairage la plus élevée dans la zone (82) de la distribution de lumière sur l'écran (80).
  2. Phare selon la revendication 1,
    caractérisé par
    au moins un autre dispositif écran (30 ; 130) installé dans la direction de sortie de lumière (14) après le premier dispositif écran (20 ; 120).
  3. Phare selon la revendication 1 ou 2,
    caractérisé en ce que
    le premier dispositif écran (20 ; 120) et au moins un autre dispositif écran (30 ; 130) peuvent varier entre leur premier état et leur second état, indépendamment l'un de l'autre.
  4. Phare selon l'une des revendications 1 à 3,
    caractérisé en ce qu'
    au moins un autre dispositif écran (30) présente une forme courbe, de préférence concave, dans la direction de l'axe optique (11).
  5. Phare selon l'une des revendications 1 à 4,
    caractérisé en ce qu'
    au moins un autre dispositif écran (30) est réalisé pour que la lumière qui passe sur le premier dispositif écran (20) occupant son premier état, coupe en grande partie la lumière passant à côté du premier dispositif écran (20) et éclairant le côté opposé de circulation devant le véhicule, par rapport à la lumière passant sur le premier dispositif écran (20) et qui éclaire le côté propre de circulation devant le véhicule.
  6. Phare selon l'une des revendications 1 à 5,
    caractérisé en ce qu'
    au moins l'un des dispositifs/écrans (20, 30) est transparent à la lumière et mobile entre son premier et son second état.
  7. Phare selon la revendication 6,
    caractérisé en ce que
    les dispositifs écrans (20, 30) sont couplés et mobiles en commun entre un premier et un second état.
  8. Phare selon l'une des revendications 1 à 7,
    caractérisé en ce qu'
    au moins l'un des dispositifs écrans (120, 130) présente au moins par zones, une transparence à la lumière, variable, et peut commuter entre un premier état à faible transparence à la lumière et un second état à forte transparence à la lumière.
  9. Phare selon l'une des revendications précédentes,
    caractérisé en ce que
    dans la première position de fonctionnement du phase, les dispositifs écrans (20, 30 ; 120, 130) occupant leur premier état, on émet un faisceau de feu de croisement et en ce que dans sa seconde position de fonctionnement avec les dispositifs écrans (20, 30 ; 120, 130) dans leur second état, le phare émet un faisceau de lumière de feu de route.
  10. Phare selon la revendication 9,
    caractérisé en ce que
    le faisceau de lumière de longue portée émis par le phare dans sa seconde position de fonctionnement avec des dispositifs écrans (20, 30 ; 120, 130) dans leur second état, éclaire une plage (92) d'un écran de mesure (80) installé devant le phare, plage dans laquelle il y a dans la zone centrale (92) de l'écran (80), les valeurs maximales d'intensité lumineuse de 100 à 200 lux et
    le faisceau de feu de croisement émis par le projecteur dans sa première position de fonctionnement avec les dispositifs écrans (20, 30 ; 120, 130) dans leur premier état, l'écran de mesure (80) est éclairé dans une plage (82) délimitée vers le haut par la limite clarté/obscurité (84, 86) générée par le premier dispositif écran (20 ; 120) et dans cette plage, dans une zone (88) sous la limite clarté/obscurité (84, 86) et sur le même côté de circulation de l'écran de mesure (80) on a des valeurs maximales d'intensité d'éclairage d'environ 40-80 lux.
  11. Phare selon l'une des revendications précédentes,
    caractérisé en ce que
    la source lumineuse (12) est une lampe à décharge de gaz.
EP98121941A 1998-02-20 1998-11-19 Phare du type projecteur Expired - Lifetime EP0937942B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19807153 1998-02-20
DE19807153A DE19807153A1 (de) 1998-02-20 1998-02-20 Scheinwerfer für Fahrzeuge nach dem Projektionsprinzip

Publications (3)

Publication Number Publication Date
EP0937942A2 EP0937942A2 (fr) 1999-08-25
EP0937942A3 EP0937942A3 (fr) 2001-10-24
EP0937942B1 true EP0937942B1 (fr) 2007-06-27

Family

ID=7858401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98121941A Expired - Lifetime EP0937942B1 (fr) 1998-02-20 1998-11-19 Phare du type projecteur

Country Status (4)

Country Link
US (1) US6312147B2 (fr)
EP (1) EP0937942B1 (fr)
JP (1) JP4460666B2 (fr)
DE (2) DE19807153A1 (fr)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19933414B4 (de) * 1999-07-16 2005-02-03 Automotive Lighting Reutlingen Gmbh Scheinwerfer für Kraftfahrzeuge
JP2001110211A (ja) * 1999-10-12 2001-04-20 Koito Mfg Co Ltd 車両用前照灯
FR2809797B1 (fr) * 2000-05-31 2002-08-23 Valeo Vision Projecteur elliptique de vehicule automobile a infrarouges et a encombrement reduit
FR2811408B1 (fr) † 2000-07-07 2002-10-18 Valeo Vision Projecteur du genre elliptique notamment pour eclairage de route a photometrie basse amelioree
JP2002184219A (ja) * 2000-12-18 2002-06-28 Koito Mfg Co Ltd 車輌用前照灯
DE10125460C2 (de) * 2001-05-25 2003-06-12 Hella Kg Hueck & Co Kraftfahrzeugscheinwerfer nach dem Projektionsprinzip mit einer verstellbaren Blendenanordnung
DE60229475D1 (de) * 2001-08-10 2008-12-04 Ichikoh Industries Ltd Scheinwerfer mit zwei Funktionen
DE10216177A1 (de) * 2002-04-12 2003-11-13 Hella Kg Hueck & Co Projektionsmodul für einen Fahrzeugscheinwerfer
US20040202004A1 (en) * 2003-04-09 2004-10-14 Guide Corporation, A Delaware Corporation Bifunctional headlamp having a rotating shield with integral actuator
US20040213010A1 (en) * 2003-04-22 2004-10-28 Guide Corporation Bi-functional headlamp having a linear shifting sleeve with integral actuator
US7036969B2 (en) * 2003-12-04 2006-05-02 Guide Corporation Adverse weather headlamp system
DE10361234A1 (de) * 2003-12-24 2005-07-28 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge
US20050152151A1 (en) * 2004-01-14 2005-07-14 Guide Corporation Adverse weather automatic sign light shield
FR2866413B1 (fr) * 2004-02-13 2006-06-30 Valeo Vision Projecteur elliptique equipe d'un ecran d'occultation en matiere transparente.
AT502161B1 (de) * 2004-03-02 2007-05-15 Zizala Lichtsysteme Gmbh Fahrzeugscheinwerfer für kurvenlicht
MXPA06011736A (es) 2004-04-08 2007-01-25 Federal Mogul Corp Lampara de luz de proyector con correccion de aberracion cromatica.
FR2868828B1 (fr) * 2004-04-09 2007-03-16 Valeo Vision Sa Projecteur lumineux pour vehicule automobile avec faisceau a coupure, et ensemble de cache pour un tel projecteur
DE102004034838B4 (de) * 2004-07-19 2015-07-23 Daimler Ag Fahrzeugscheinwerfersystem mit variabler Strahlform
FR2873788B1 (fr) * 2004-07-30 2006-10-13 Valeo Vision Sa Module optique elliptique a occulteur pour vehicule automobile
JP2006182100A (ja) * 2004-12-27 2006-07-13 Koito Mfg Co Ltd 車両用照明装置
US7140759B1 (en) * 2005-02-01 2006-11-28 Jen Mao Wang Light beam adjusting device for vehicle
JP4527623B2 (ja) * 2005-07-21 2010-08-18 株式会社小糸製作所 車両用灯具
US7357545B2 (en) * 2005-08-10 2008-04-15 Visteon Global Technologies, Inc. Multi-focal lens for bi-functional headlamp
US7410282B2 (en) * 2005-10-25 2008-08-12 Visteon Global Technologies, Inc. Bi-functional headlight module
JP4389895B2 (ja) * 2006-04-21 2009-12-24 市光工業株式会社 車両用前照灯
DE602007002293D1 (de) * 2006-04-21 2009-10-15 Philips Intellectual Property Lampeneinheit für adaptives frontbeleuchtungssystem für ein fahrzeug
US7775699B2 (en) * 2006-07-31 2010-08-17 Visteon Global Technologies, Inc. Projector lamp having enhanced low to high beam contrast ratio
JP4749968B2 (ja) * 2006-07-31 2011-08-17 株式会社小糸製作所 車両用前照灯
JP2008177024A (ja) * 2007-01-18 2008-07-31 Ichikoh Ind Ltd 車両用前照灯
JP4743124B2 (ja) * 2007-01-18 2011-08-10 市光工業株式会社 車両用前照灯
DE102008025463A1 (de) * 2008-05-28 2009-12-10 Delvis Gmbh Abstrahleinheit für einen Scheinwerfer
DE102009027711A1 (de) 2008-08-13 2010-04-01 Saia-Burgess Murten Ag Einstellvorrichtung zum Bewegen einer Einstellkomponente und Scheinwerfer
JP5395410B2 (ja) * 2008-11-19 2014-01-22 株式会社小糸製作所 車両用前照灯
AT509830B1 (de) * 2010-04-22 2012-07-15 Zizala Lichtsysteme Gmbh Scheinwerfer für fahrzeuge
KR20120061682A (ko) * 2010-12-03 2012-06-13 현대자동차주식회사 헤드램프 빔패턴 변환 구조
CN102829416B (zh) * 2011-06-14 2015-07-22 财团法人工业技术研究院 具有多种光形输出的发光二极管的灯具光源
JP5454526B2 (ja) * 2011-07-25 2014-03-26 トヨタ自動車株式会社 車両配光制御装置及び方法
US9108566B2 (en) * 2013-03-14 2015-08-18 Federal-Mogul Corporation Multi-pattern headlamp assembly and system
FR3022327B1 (fr) * 2014-06-16 2016-06-10 Valeo Vision Module d'eclairage et/ou de signalisation rotatif
KR101916724B1 (ko) 2016-12-27 2018-11-08 엘지전자 주식회사 차량용 램프 및 그것의 제어방법
CN110497839A (zh) * 2019-08-15 2019-11-26 广汽蔚来新能源汽车科技有限公司 汽车及其车灯

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5339226A (en) * 1992-06-03 1994-08-16 Koito Manufacturing Co., Ltd. Projection head lamp for cars

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5161875A (en) * 1989-11-28 1992-11-10 Stanley Electric Company, Ltd. Head lamp for cornering operation
DE4002576C5 (de) * 1990-01-30 2005-06-02 Automotive Lighting Reutlingen Gmbh Scheinwerfer mit Abblend- und Fernlicht für Kraftfahrzeuge
DE4102586C2 (de) * 1990-01-31 2000-07-06 Honda Motor Co Ltd Scheinwerfer
DE19537838A1 (de) * 1995-10-11 1997-04-17 Bosch Gmbh Robert Scheinwerfer für Fahrzeuge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5339226A (en) * 1992-06-03 1994-08-16 Koito Manufacturing Co., Ltd. Projection head lamp for cars

Also Published As

Publication number Publication date
US6312147B2 (en) 2001-11-06
EP0937942A2 (fr) 1999-08-25
US20010021113A1 (en) 2001-09-13
DE59814042D1 (de) 2007-08-09
JP4460666B2 (ja) 2010-05-12
EP0937942A3 (fr) 2001-10-24
JPH11283405A (ja) 1999-10-15
DE19807153A1 (de) 1999-08-26

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