EP1818600B1 - Feu de croisement doté d'une production d'un point chaud - Google Patents

Feu de croisement doté d'une production d'un point chaud Download PDF

Info

Publication number
EP1818600B1
EP1818600B1 EP07002686A EP07002686A EP1818600B1 EP 1818600 B1 EP1818600 B1 EP 1818600B1 EP 07002686 A EP07002686 A EP 07002686A EP 07002686 A EP07002686 A EP 07002686A EP 1818600 B1 EP1818600 B1 EP 1818600B1
Authority
EP
European Patent Office
Prior art keywords
lens
light
plane
headlamp
antidazzle
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 - Fee Related
Application number
EP07002686A
Other languages
German (de)
English (en)
Other versions
EP1818600A2 (fr
EP1818600A3 (fr
Inventor
Emil Dr. Stefanov
Dagmar Dr. Würtenberger
Veit Dr.-Ing. Schwegler
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.)
Odelo GmbH
Original Assignee
Odelo 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 Odelo GmbH filed Critical Odelo GmbH
Publication of EP1818600A2 publication Critical patent/EP1818600A2/fr
Publication of EP1818600A3 publication Critical patent/EP1818600A3/fr
Application granted granted Critical
Publication of EP1818600B1 publication Critical patent/EP1818600B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/26—Elongated lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/265—Composite lenses; Lenses with a patch-like shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a low-beam headlamp having at least one light module, wherein the individual light module has at least one light source and at least one primary lens connected downstream of the light source, and wherein the light source is a light-emitting diode.
  • Such a low beam headlamp is known. This has three different lighting units. The desired image is controlled by means of reflectors and diaphragms in the individual lighting units. Due to the optical design of the hot spot has on all sides a disturbing for the driver high contrast limit. The image of the basic distribution can show color deviations, stripes and spots.
  • the publication DE 103 08 704 A1 discloses a low beam headlamp with multiple light modules having a primary lens and a secondary lens.
  • the present invention is therefore based on the problem to develop a compact low-beam headlamp whose light distribution has a distinct hot spot, the light intensity distribution from the hot spot to the basic distribution steadily decreases.
  • the low beam headlamp has at least one secondary lens, which is optically connected downstream of the primary lens or the primary lenses. Both the primary and secondary lenses have at least two superimposed lens segments.
  • a lens segment of a secondary lens is associated with at least one lens segment of a primary lens.
  • at least one lens segment of the primary lens and its associated lens segment of the secondary lens are outside the optical axis of the light module.
  • At least the light exit surface of this lens segment of the primary lens has an at least biaxially curved envelope surface.
  • the sum of the radii of curvature of at least one surface element of the envelope surface of this light exit surface in two mutually normal planes is greater than the sum of the radii of curvature of at least one surface element of the envelope surface of at least one other light exit surface of the primary lens in two mutually normal planes.
  • FIGS. 1 to 5 show a motor vehicle low beam headlamp (10) with a light module (20).
  • Each headlamp (10) may comprise one or more such light modules (20), which may then be arranged side by side and / or one above the other.
  • FIG. 1 a dimetric view of the headlamp (10), the FIG. 2 shows a longitudinal section through the light module (20).
  • the sectional plane in this representation is the vertical central longitudinal plane (21) of the light module (20), cf. FIG. 3 ,
  • the beam paths of the light module (20) are shown by way of example from a light source (30) to a measuring wall (2).
  • the light propagation in a plan view of the light module (20) greatly simplifies the FIG. 5 ,
  • the image (150) which is produced during operation of the light source (30) on the measuring wall (2) is shown by way of example.
  • That in the FIGS. 1 to 5 illustrated light module (20) is for example 70 millimeters long, 50 millimeters wide and 50 millimeters high. It includes, for example, a housing, not shown here, in which the light source (30), a condenser (40), a primary (50) and a secondary lens (90) and a mirror (130) are arranged.
  • the light source (30), the condenser lens (40) and the primary lens (50) are optically connected in series, so that the light (140) generated by the light source (30) passes through these two lenses (40, 50).
  • From the primary lens (50) part of the light (140) is passed directly to the secondary lens (90), another part is reflected by the mirror (130) and then passes to the secondary lens (90).
  • Through the secondary lens (90) passes through the light (140) in the environment (1).
  • the light propagation direction (26) is thus directed here by the light source (30) in the direction of the secondary lens (90), ie, for example in the direction of
  • the optical axis (25) of the light module (20) is in the FIG. 2 shown as a horizontal line. It connects the light source (30) to the secondary lens (90). In addition, it is the intersection of the vertical central longitudinal plane (21) with a horizontal central longitudinal plane (22) of the light module (20), see. FIG. 3 ,
  • the light source (30) is e.g. a high power luminescent or light emitting diode (30) that emits, for example, white light. It comprises, for example, a light-emitting chip (33) with a conversion layer which is covered by a transparent light distribution body (34), e.g. a radiation shaped body (34) is surrounded.
  • the active area of the light-emitting chip (33) is, for example, one square millimeter.
  • the radiation molding (34) has a height of 2.8 millimeters in this embodiment. He can have optical functions. For example, it can focus the diverging light emitted by the light-emitting chip (33) in the direction of the optical axis (25) or widen it away from the optical axis (25).
  • the light source (30) projects into an eg concavely curved lens surface (42) of the condenser lens (40).
  • the boundary line (43) of the concavely curved lens surface (42) and the light-emitting chip (33) here span an imaginary conical surface, the light-emitting chip (33) forming the conical tip.
  • the point angle this cone is for example 130 degrees.
  • the condenser lens (40) is designed, for example, as a convex, hemispherical lens (45).
  • the condenser lens (40) is fixed in the housing, for example, by means of an annular flange (47).
  • the primary (50) and secondary (90) lenses are e.g. approximately transverse to the optical axis (25). Their minimum distance in the light propagation direction (26) is, for example, 50% of the distance between the light-emitting chip (33) and the farthest light exit surface (124) of the secondary lens (90) facing the surroundings (1). This latter distance is referred to below as the reference length (27).
  • the reference length (27) is 40 millimeters in this embodiment.
  • the distance of the primary lens (50) to the condenser lens (40) is here e.g. 1% of this reference length (27).
  • the distance between the primary (50) and the secondary lens (90) may also be greater than said value.
  • the primary (50) and secondary (90) lenses in a view normal to the optical axis (25), are, for example, rectangular lenses having side mounting flanges (51, 91) for mounting in the housing. Between the mounting flanges (51, 91), the lenses (50, 90) each have three lens segments (61, 71, 81, 101, 111, 121) arranged one above the other. In the view normal to the optical axis (25), the total area of the lens segments (101, 111, 121) of the secondary lens in this embodiment is 2.8 times as large as the total area of the lens segments (61, 71, 81) of the primary lens (50).
  • the ratio between the height - normal to the horizontal center longitudinal plane (22) - and the width - normal to the vertical central longitudinal plane (21) - is 1.8 times for the lens segments (61, 71, 81) of the primary lens (50) Lens segments of the secondary lens (90) the factor 1.5.
  • the height of the primary lens (50) in the embodiment described here is 40% of the reference length (27).
  • the primary (50) and the secondary lens (90) are - based on their external dimensions - at least approximately symmetrical to the vertical center longitudinal plane (21) of the light module (20).
  • the primary lens (50) is - at least approximately symmetrical to the horizontal center longitudinal plane (22) - with respect to their outer dimensions.
  • the secondary lens (90) protrudes in this embodiment with 37% of its height over the horizontal center longitudinal plane (22), the rest of the secondary lens (90) lies below this plane (22).
  • the lens segments (61, 71, 81, 101, 111, 121) are, for example, interconnected sections of plano-convex, biconvex or concave-convex lenses. They are made, for example, from a highly transparent plastic, glass, etc.
  • Each of the lens segments (61, 71, 81, 101, 111, 121) has a light entry surface (63, 73, 83, 103, 113, 123) facing the light source (30) and a light exit surface (64, 64) remote from the light source (30). 74, 84, 104, 114, 124).
  • All of these surfaces are composed of individual surface elements, for example. These surface elements may be spherical or aspherical segments, planar surface elements, etc. Hereinafter, these surfaces (63, 73, 83, 103, 113, 123, 64, 74, 84, 104, 114, 124) will be described by their envelope surfaces.
  • An envelope surface here is a geometrically interpolated, closed surface, to which the individual surface elements have the lowest standard deviation.
  • These envelope surfaces are, for example, lateral surface portion of an ellipsoid, a torus, a cylinder, etc., or may be composed of these.
  • the envelope surfaces or the envelope surface elements have, for example, a plurality of main axes, which are arranged, for example, normal to one another. The main axes of the envelope surfaces or The envelope surfaces may also include angles that are not equal to 90 degrees.
  • an intersection line which has a contour line of the respective surface (63, 73, 83, 103, 113, 123, 64, 74, 84, 104, 114 , 124).
  • the radii of curvature of the contour lines can be constant along these contour lines or increase or decrease steadily or discontinuously, etc. Also, jumps or straight sections of the contour lines are conceivable.
  • the lens segments (61, 71, 81) of the primary lens (50) are in the described embodiment parts of upper portions of lenses.
  • the thickness of the individual lens segment (61, 71, 81) decreases - in the illustration of FIG. 2 - from top to bottom too.
  • the top (62) of the upper lens segment here is two percent of the reference length (27) long, the bottom has five times the length of the top (62).
  • the top (72) of the central lens segment (71) has, for example, a length of seven percent of the reference length (27), the bottom is twice as long.
  • the length of the upper surface (82) is five percent of the reference length (27), and downwards the length increases three times.
  • the height of the upper (61) and the middle lens segment (71) is here in the middle transverse surfaces (65, 75) 11% of the reference length (27), the height of the lower lens segment (81) 16% of the reference length (27).
  • the central transverse surface (65) of the upper lens segment (61) is inclined for example by 3 degrees to a normal plane of the optical axis (25), the upper side (62) of the lens segment (61) being opposite to the light propagation direction (26) is offset.
  • the center transverse surface (75) of the central lens segment (71) is for example normal to the optical axis (25).
  • the central transverse surface (85) is inclined, for example, by 16 degrees to a normal plane of the optical axis (25), the upper surface (82) being inclined forward in the light propagation direction (26).
  • the light entry surface (63) of the upper lens segment (61) in this embodiment is 31% of the total light entry surfaces (63, 73, 83).
  • the light entrance surface (73) of the middle lens segment (71) is 29% and the light entry surface (83) of the lower lens segment (81) 40% of the sum of these surfaces (63, 73, 83).
  • the upper lens segment (61) has, for example, a wedge-shaped shape.
  • the transverse to the vertical center longitudinal plane (21) oriented edges of the upper side (62) are at least approximately parallel to the horizontal central longitudinal plane (22), the lower edges (66, 67) here fall from the right to the left side of the vehicle.
  • At least the lower edge (66) delimiting the light entry surface (63), viewed in the light propagation direction (26), in this exemplary embodiment encloses an angle of 15 degrees with the horizontal central longitudinal plane (22).
  • the top (62) may also be e.g. be executed convex curved.
  • Both the light entry surface (63) and the light exit surface (64) are convexly curved.
  • the envelope surfaces of these surfaces (63, 64) are each lateral surface sections of a three-dimensionally curved aspherical surface.
  • both surfaces are designed such that two main axes span a plane parallel to the lower edge (66) and aligned with the horizontal center longitudinal plane (22) in FIG a straight line parallel to the optical axis (25) intersects.
  • One of said major axes and the third major axes then span a plane normal to that plane in which the optical axis (25) lies or which does not intersect the optical axis (25).
  • the lateral surface sections may also be sections of Torusmantel vom, Ellipsoidmantel vom, etc.
  • the lower edge (66) of the light entry surface (63) in this embodiment in the vertical central longitudinal plane (21) has a distance of 10% of the reference length (27) from the horizontal center longitudinal plane (22). From the lower edge (67) of the light exit surface (64), the distance to the horizontal central longitudinal plane (22), also measured in the vertical central longitudinal plane (21), is 11% of the reference length (27).
  • the envelope contour of the light entry surface (63) for example a constant radius of curvature. This is, for example, 41% of the reference length (27) of the light module (20).
  • the center of curvature (68) here lies 60% of the reference length (27) in the light propagation direction (26) offset from the light emitting chip (33) and four percent of the reference length (27) offset above the horizontal center longitudinal plane (22).
  • the radius of the envelope contour of the light entry surface (63) can increase or decrease towards the upper and / or lower edge.
  • the light entry side (63) may also be formed as a plane surface.
  • the envelope surface of the light exit surface (64) also has a constant radius of curvature in the vertical central longitudinal plane (21), for example. This is for example 61% of the reference length (27).
  • the center of curvature (69) is here by four percent of the reference length (27) opposite to the light propagation direction (26) offset to the light-emitting chip (33) and is located by three percent of that length above the horizontal center longitudinal plane (22).
  • the radius of curvature of the envelope contour of the light exit surface (64) can increase or decrease towards the upper and / or the lower edge.
  • the radius of curvature of the envelope surface of the light exit surface (64) is greater than the distance of the light source (30) to the light exit surface (64). However, it is smaller than fifty times the reference length (27).
  • the surface element of the envelope surface of the light exit surface (64), which lies at the intersection of the two said planes - the vertical central longitudinal plane (21) and the plane parallel to the horizontal central longitudinal plane (22) - is thus at least biaxially curved.
  • the respective curvatures are the reciprocals of the radii of curvature.
  • the sum of the curvatures of the surface element in two mutually normal planes is for example between two and ten times the reciprocal of the reference length (27). Analogously, these relationships apply, for example. also for a surface element of the envelope surface of the light exit surface (64), which lies in the intersection of the main axis planes.
  • the middle lens segment (71) is here, following the upper lens segment (61), also wedge-shaped.
  • the top (72) is e.g. formed obliquely.
  • the lower edges (76, 77) lie, for example, parallel to the horizontal center longitudinal plane (22).
  • the envelope surfaces of the light entrance (73) and the light exit surface (74) are at least in this embodiment approximately sections of lateral surfaces of a triaxially curved body with normal principal axes.
  • Two main axes span the vertical central longitudinal plane (21) or a plane parallel thereto.
  • the third main axis lies, for example, in a plane which is three percent of the reference length (27) below the horizontal central longitudinal plane (22) and aligned parallel thereto.
  • the lower edge (76) of the light entry surface (73) lies, for example, in the horizontal central longitudinal plane (22).
  • the lower edge (77) of the light exit surface (74) is e.g. by one percent of the reference length (27) below this plane (22).
  • the radius of curvature of Schmieg Vietnamesees the light entrance surface (73) which intersects the plane spanned by the horizontal main axes plane, in the vertical central longitudinal plane (21) is 26% of the reference length (27).
  • the center point (78) of this osculation circle is here offset by 44% of the reference length (27) in the light propagation direction (26) offset to the light-emitting chip (33) and offset by three percent of the reference length (27) below the horizontal center longitudinal plane (22).
  • the corresponding radius of curvature of the light exit surface (74) is e.g. 28% of the reference length (27).
  • the center of curvature (79) here is offset by three percent of the reference length (27) in the light propagation direction (26) to the light emitting chip (33) and is three percent of this length (27) below the horizontal center longitudinal plane (22).
  • the lower lens segment (81) of the primary lens (50) in this embodiment is an upper portion of a lens whose light entrance surface (83) is e.g. is a plane surface and the light exit surface (84) is three-axis convex curved.
  • the planar surface (83) encloses, for example, an angle of 50 degrees with the horizontal central longitudinal plane (22), the upper edge (87) of this planar surface (83) being offset in the light propagation direction (26) from the lower edge (86).
  • the envelope surface of the light exit surface (84) is, for example, a three-axis convexly curved surface, with two axes each spanning a plane of curvature. These curvature levels are normal here.
  • One of these planes of curvature lies, for example, in the vertical center longitudinal plane (21), another example in a plane which is inclined by 16 degrees with respect to the horizontal center longitudinal plane (22).
  • the center of curvature (89) of the osculating circle in the vertical center longitudinal plane (21) is here offset by 13% of the reference length (27) offset from the light-emitting chip (33) against the light propagation direction (26).
  • the radius of curvature in this plane is 33% of the reference length (27).
  • the radius of curvature is 20% greater than the radius of curvature of the upper lens segment (61) in the corresponding eg horizontal major axis plane of the envelope surface of the light exit surface (64).
  • the sum of the radii of curvature of a surface element of the light exit surface (84) of the lower lens segment (81) in two mutually normal planes is therefore greater than the sum of the corresponding radii of curvature of the light exit surface (74) of the central lens segment (71) and greater than the sum in this embodiment the corresponding radii of curvature of the light exit surface (64) of the upper lens segment (61).
  • all the lens segments (101, 111, 121) are sections of plano-convex lenses.
  • the light entry surfaces (103, 113, 123) of these lens segments (101, 111, 121) are e.g. Planar surfaces that lie, for example, in a common plane normal to the optical axis (25).
  • the distance of the light entry surfaces (103, 113, 123) from the light source (30) is 82% of the reference length (27).
  • the light entry surfaces (103, 113, 123) or individual light entry surfaces (103, 113, 123) may also be e.g. be concavely arched.
  • the optical axis (25) intersects the middle lens segment (111) of the secondary lens (90).
  • the upper lens segment (101) and the lower lens segment (121) of the secondary lens (90) are, for example, upper lens sections of a lens.
  • the lens thickness at the top is 7.5% of the reference length (27), and at the bottom, the thickness of this lens segment (101) increases by about 50%.
  • the maximum thickness is 15% of the reference length (27).
  • the height of the upper lens segment (101) is for example 16% of the reference length (27), the lower Lens segment (121) is, for example, 27% of the reference length (27) high.
  • the middle lens segment (111) is, for example, a middle section of a lens, which lies here asymmetrically with respect to the horizontal central longitudinal plane (22).
  • the middle lens segment (111) thus includes both an upper portion and a lower portion of a lens.
  • the thickness of the lens segment (111) in the horizontal center longitudinal plane (22) is here 12% of the reference length (27).
  • the middle lens segment (111) has a height of 22% of this reference length (27).
  • the lens segments (101, 111, 121) have, for example, over their width - normal to the cutting plane of the FIG. 2 - a constant height.
  • the envelope surface of the light exit surface (104) of the upper lens segment (101), for example, has the shape of a portion of a three-axis convex curved aspherical surface.
  • the major axes of the envelope surface of this surface are normal to each other.
  • a plane spanned by the major axes lies at least parallel to a plane spanned by the directions of the optical axis (25) and the lower edge (66).
  • Another curvature plane is inclined, for example, with respect to the vertical center longitudinal plane (21).
  • In the vertical center longitudinal plane (21) here is the distance of the first-mentioned main axis plane to the horizontal center longitudinal plane (22) 10% of the reference length (27).
  • the radius of curvature of the Schmieg Vietnamesees that intersects said main axis plane is in the vertical center longitudinal plane in this embodiment on average 37% of the reference length (27).
  • the center of curvature (109) is, for example, 57% of the reference length (27) in FIG Light propagation direction (26) offset to the light-emitting chip (33) and by 10% of the reference length (27) above the horizontal center longitudinal plane (22).
  • the Schmieg Vietnamese in the vertical center longitudinal plane (21) inclined main axis plane is then for example 44% of the reference length (27).
  • the lay circle of this lens segment (101) in the plane spanned by the major axes intersecting the vertical center longitudinal plane (21) has a radius of 170% of the reference length (27). The sum of these two last-mentioned radii is thus 214% of the reference length (27).
  • the light exit surface (104) can also be biaxially curved. It then has, for example, the shape of a torus. In this case, then the contour of the light exit surface (104) in the vertical center longitudinal plane (21) has a constant radius of curvature. In addition, then, e.g. for each horizontal plane, that the radius of curvature of the contour - the intersection of the light exit surface (104) with a plane - is constant in this plane.
  • the envelope surfaces of the light exit surfaces (114, 124) of the central lens segment (111) and of the lower lens segment (121) are sections of cylinder jacket surfaces in this exemplary embodiment.
  • the cylinder axis of the light exit surface (114) is at least approximately in the horizontal center longitudinal plane (22).
  • the cylinder axis of the light exit surface (124) lies in an at least approximately parallel plane. Both are aligned normal to the vertical center longitudinal plane (21).
  • the envelope surfaces of the light exit surfaces (114, 124) can also be elongated aspherical surfaces.
  • the distance between the cylinder axis and the light exit surface (114) is 34% of the reference length (27). This distance corresponds to the radius of curvature of the contour (118) of the light exit surface (114) in the vertical center longitudinal plane (22).
  • the distance of the center of curvature (119) from the light emitting chip (33) is for example 60% of the reference length (27).
  • the second curvature plane is here the horizontal center longitudinal plane (22).
  • the optical axis (25) is thus in this embodiment, normal to the tangent plane (23) of the light exit surface (114) at the intersection with the optical axis (25).
  • the radius of curvature of the light exit surface (114) in the horizontal center longitudinal plane (22) is, for example, infinite. The sum of the two radii is thus infinite.
  • the envelope contour (128) of the light exit surface (124) in the vertical central longitudinal plane (21) is a circular segment having a radius of, for example, 40% of the reference length (27).
  • the center point (129) of this circle section lies 56% in the light propagation direction (26) offset from the light emitting chip (33) below the horizontal center longitudinal plane (22) and has a distance of 33% of the reference length (27).
  • the second radius of curvature of the light exit surface (124) also has an infinite radius at the lower lens segment (121). The sum of the two radii is thus infinite.
  • the light exit surface (124) may have the shape of a toroidal lateral surface.
  • the radii of curvature of the contours of the light exit surfaces (114, 124) in the horizontal central longitudinal plane (22) or planes parallel to this plane (22) is then, for example, greater than fifty times the reference length (27).
  • the sums of the two radii of curvature are then also greater than fifty times the reference length (27).
  • the space between the primary lens (50) and the secondary lens (40) is limited in the illustrated embodiment down by a mirror (130).
  • This is, for example, a plane mirror whose edges are below the primary lens (50) and below the secondary lens (90).
  • the plane mirror (130) is located on the lower edge (86) of the light exit surface (84) of the lower lens segment (81) of the primary lens (50) and on the lower edge (126) of the light entry surface (123) of the lower lens segment (121) of the secondary lens (90 ) at. These two edges (86, 126) define the reflecting surface (131) of the mirror (130).
  • the mirror (130) closes in the vertical center longitudinal plane (21), cf. FIG. 2 , with the horizontal center longitudinal plane (22) an angle of 20 degrees.
  • the mirror (130) is normal to the plane of the bisector of the light entry surfaces (83, 123) of the lens segment (81) of the primary lens (50) and the lens segment (121) of the secondary lens (90).
  • the plane mirror (130) can also be larger than it is in the FIGS. 1 and 2 is shown. For example, it can be anchored laterally in the housing or in the longitudinal direction on the lenses (50, 90). In these edge regions, outside of the used reflection region (131) in the visible in a plan view of the light module (20), for example, space between the lenses (50, 90), here referred to as a plane mirror (130) mirror (130) can also vaults or have non-reflective areas.
  • the headlamp (10) may also be constructed such that the plane mirror (130) lies against the lens segments (61, 101) which have high curvatures. It can also be adjacent to the middle lens segments (71, 111). The use of multiple mirrors (130) is conceivable.
  • the headlight (10) can eg at a design with a large condenser lens (40) or with light guide bodies without mirror (130) to be executed.
  • the primary (50) and secondary (90) lenses may also include other lens segments.
  • the shape of these lens segments then largely corresponds to one of the described lens segments (61, 71, 81, 101, 111, 121) of the primary lens (50) or the secondary lens (90).
  • the lenses (50, 90) e.g. have at least in the light exit surface (64) of the lens segment (61), the sum of the radii of curvature in two mutually normal planes is lower than in at least one other light exit surface (74, 84) of the primary lens (50) ,
  • the dipped-beam headlamp (10) is constructed for example in such a way that at each point of an edge (76) of the light entry surface (73) of the central lens segment (71) of the primary lens (50) there is a straight line that intersects this point with a point of the associated light exit surface ( 114) of the secondary lens (90) connects.
  • This straight line is normal to a tangential plane (23) in the piercing point of the light exit surface (114).
  • it is normal to a tangential plane at the point of penetration of the straight line through the light entry surface (113) of the secondary lens (90).
  • the straight line of the middle lens segments (71, 111) may in this case be e.g. lie in a plane parallel to the horizontal center longitudinal plane (22).
  • the light-emitting chip (33) emits light (140), for example as a Lambertian radiator, into a half-space.
  • the light-emitting diode (30) generates, for example, a luminous flux which is greater than 50 lm.
  • the radiation is divergent and has only a small pronounced maximum.
  • the light intensity of the light source (30) falls to the edge - with increasing angle between the light emission and the optical axis (25) - continuously.
  • the light (140) emerging from the light source (30) is e.g. bundled by the condenser lens (40) in the direction of the optical axis (25).
  • the light exit from the condenser lens (40) is then e.g. within an imaginary cone with a point angle of 60 degrees that widens in the light propagation direction (26), the cone axis coinciding with the optical axis (25).
  • a light-emitting diode (30) with a narrower radiation characteristic e.g. with +/- 30 degrees to the optical axis (25) to use.
  • the light distribution body (34) and / or the condenser lens (40) can be dispensed with here.
  • the light (140) emitted by the light emitting diode (30) may then be e.g. low-loss into the primary lens (50) are coupled.
  • the light (140) impinges on the light entry surfaces (63, 73, 83) of the primary lens (50) and enters the lens segments (61, 71, 81) of the primary lens (50) through these light entry surfaces (63, 73, 83) , In this case, the light bundle (140) is divided into three partial light bundles (141-143).
  • FIG. 4 is a beam path of the individual partial light bundles (141 - 143), for example, shown.
  • FIG. 5 shows a plan view of the light module (20). In this figure, for example, the upper light bundle (141), the middle light bundle (142) and the lower light bundle (143) are shown. The middle (142) and the lower light bundle (143) are, for example, congruent to one another in plan view.
  • the upper partial light bundle (141) is generated by light from the light source (30), which forms an angle with the optical axis (25), for example greater than 20 degrees.
  • the light bundle (141) consists of light that is emitted by the light source (30) within an angle segment between 25 degrees and 45 degrees to the optical axis (25). This partial light bundle (141) thus has no uniform light intensity.
  • This upper partial light bundle (141) strikes the light entry surface (63) of the upper lens segment (61). In this case, the light of higher light intensity strikes the lower region of the light entry surface (63). When penetrating the light entry surface (63), the individual light rays are refracted in the direction of the solder on the light entry surface (63) in the passage point. When passing through the light exit surface (64) - the light exit surface (64) is not completely illuminated here - the light beam (141) is fanned out, for example, both in the horizontal and in the vertical direction. In this case, it is oriented such that the entire partial light bundle (141) only strikes the light entry surface (103) of the upper lens segment (101) of the secondary lens (90).
  • the light beam (141) exits the secondary lens (90) through the light exit surface (104).
  • the opening angle of the light beam in the horizontal direction is for example 13 degrees, in the vertical direction e.g. 10 degrees.
  • FIG. 4 Simplifies a portion of the center transverse surface (65) shown as an object (165).
  • the beam paths of thin lenses are shown for illustration as beam paths. Run from the top and bottom end points of the object (165) the parallel beams (162, 166), the node beams (163, 167) and the focus beams (164, 168) to the secondary lens (90).
  • the ray model also shows the imaginary rays which lie outside the imaging region, for example the focal point ray (164).
  • the distance of the primary lens (50) to the secondary lens (90) is greater than the maximum radius of curvature of the envelope shape of the light exit surface (104) of the upper lens segment (101) in the vertical central longitudinal plane (21) or in a plane parallel thereto.
  • the light beam (141) produces, for example, a bright region (151) bounded by a polygon. , a so-called hot spot (151), cf. FIG. 6 ,
  • the object (165) is in focus, in the horizontal direction, a blurred stain is created.
  • the lower edge of the object (165) is imaged as the upper boundary of the hot spot (151), while the image of the upper edge of the object (165) delimits the hot spot (151) towards the bottom.
  • the projection of the object (165) has no constant light intensity at least in the vertical direction.
  • the intensity maximum (152) of the hot spot (151) lies below the optical axis (25) and the horizontal center longitudinal plane (22). He is thus below the horizon.
  • the light intensity on the measuring wall (2) - when viewing only the upper light beam (141) - sounds continuously from the intensity maximum (152) of the hot spot (151) towards the outside.
  • the illuminated area (150) rises to the upper right, the angle of the increase corresponding to the angle of inclination of the lower edge (66) to the horizontal central longitudinal plane (22).
  • the height of the illuminated area (150) results from the quotient of the object height and the distance of the lens segments (61) and (101) multiplied by the distance between the headlight (10) and the measuring wall (2).
  • the center partial light bundle (142) is generated by light from the light source (30), which forms an angle with the optical axis (25), for example less than 25 degrees. Also, this partial light bundle (142) thus has no uniform light intensity.
  • the middle partial light bundle (142) passes through the light entry surface (73) into the middle lens segment (71) of the primary lens (50).
  • the light bundle (142) is widened in the horizontal direction, for example.
  • FIG. 5 In the vertical direction, the light bundle (142) is aligned by means of the lens segment (71) of the primary lens (50) such that the entire light beam (142) strikes the light entrance surface (113) of the central lens segment (111) of the secondary lens (90).
  • the light bundle (142) When exiting the secondary lens (90), the light bundle (142) is bundled, for example, in the vertical direction to an angle segment of 10 degrees. In the horizontal direction, the light bundle (142) is widened, for example, to an angle segment of 26 degrees.
  • the object (175) - it is shown here in simplified form as part of the central transverse surface (75) - is then projected in the vertical direction at a distance corresponding to, for example, a hundred times the reference length (27) and sharply imaged. In the horizontal direction results in a wide illuminated field.
  • the FIG. 4 shows a greatly simplified beam path of this partial light bundle (142).
  • the lower edge of the object (175) is created by the lower edge (76) of the light entry surface (73).
  • This edge of the object (175) is a light-dark boundary within the lens segment (71).
  • the parallel beam (176) the node beam (177) and the focal point beam (178) coincide at least approximately.
  • These rays (176-178) are thus in a common plane that is normal to the tangent plane (23) at the light exit surface (114).
  • the beams (176-178) are at least approximately parallel to one another. In the embodiment shown here, they lie in the horizontal center longitudinal plane (22).
  • the object edge, or the lower edge (76) of the light entry surface (73) is imaged as sharply delimited upper edge (153), the so-called cut-off (153), of the illuminated region (150) on the measuring wall (2).
  • the light entry surfaces (63, 83) of the other two lens segments (61, 81) are darkened, for example - results on a measuring wall (eg, at a distance of 25 meters) ) an illuminated field having the shape of the object (175) of the lens segment (71).
  • This field has only slight brightness fluctuations.
  • the portion of the light beam (142) which is emitted by the light source (30) at least approximately parallel to the optical axis (25), for example within an angle of 5 degrees to the optical axis (25), projects the lower edge of the object (FIG. 175) as a horizontal, sharply defined cut-off (153), ie as a cut-off line on the measuring wall (2), cf.
  • the other limits (155) of the Illuminated area (150) are out of focus.
  • the cut-off (153) is here, for example, on the horizontal plane (156), which coincides with the horizontal center longitudinal plane (22).
  • the cut-off can, for example, also be 0.7 degrees below the horizon line (156), depending on the installation in the motor vehicle.
  • the light module (20) shown is the quotient of the height of the object (165) of the lens segment (61) of the primary lens (50) and the distance of the lens segment (101) to the lens segment (61) at least approximately equal to the corresponding quotient of the lens segments (71). and (111).
  • the height of the two images is at least approximately the same.
  • the lower light bundle (143) enters the lower lens segment (81) of the primary lens (50), for example, through the light entry surface (83).
  • the light bundle (143) emerging from this lens segment (81) strikes the plane mirror (130).
  • the part of the light bundle (143) which exits near the upper edge (88) of the light exit surface (84) is directed onto the region of the mirror (130) which lies close to the secondary lens (90).
  • the portion of the light beam (143) emerging from the primary lens (50) near the lower edge (86) of the light exit surface (84) strikes the region of the mirror (130) near the primary lens (50).
  • the light beam (143) is reflected on the plane mirror (130) in the direction of the secondary lens (90).
  • the light beam (143) strikes the lower lens segment (121) and enters the secondary lens (90) through the light entry surface (123).
  • the part of the light beam (143) which is reflected near the primary lens (50) enters almost horizontally in the upper area of the light entry surface (123).
  • the part of the light bundle (143), which is reflected near the secondary lens (90), enters almost horizontally in the lower region of the light entry surface (123).
  • the light bundle (143) When exiting the secondary lens (90), the light bundle (143) has an opening angle of 10 degrees in the vertical direction, for example. In the horizontal direction, for example, the light beam (143) is widened to an angle segment of 26 degrees.
  • the lens segment (81) is shown as a virtual virtual image (181) mirrored on the mirror (130).
  • a part (180) of the central transverse surface (85) thereby transitions into the virtual object (185).
  • the upper edge of the light bundle (143), for example shown on the measuring wall (2) - for example represented by the node beam (187) - is at least approximately congruent with the node beam (177) of the light bundle (142).
  • the cut-off lines (153) of both partial light bundles (142, 143) thus largely coincide.
  • the maximum deviation of two node beams (177, 187) spanning a vertical plane is for example 1 degree.
  • the upper edge of the light bundle (143) then lies, for example, below the upper edge of the light bundle (142).
  • the node beam (177, 187) is an imaginary node beam (177, 187).
  • the light bundle (143) in this embodiment is widened more than the light bundle (142).
  • the light distribution generated on the measuring wall is here 30% higher than the image, the is generated by means of the middle lens segments (71, 111).
  • the quotient of the height of the object (185) and the distance of the lens segments (81, 121) is greater than the corresponding quotient of the lens segments (71, 111) for the middle light bundle (142).
  • the two quotients can also be the same size, whereby the heights of the illuminated areas are the same.
  • a straight line connects each point of the edge (87) whose virtual image (189) generates the boundary of the object (185) and a point of the associated light exit surface (124) of the secondary lens (90), the straight line being normal a tangent plane (24) in the point of the light exit surface (124). It is also normal to a tangential plane at the point of penetration of the straight line through the light entry surface (123) of the secondary lens (90).
  • One of these straight lines and a similar straight line of the middle lens segments (71, 111) span a common vertical plane. These two straight lines enclose in this plane an angle which is less than 1 degree. For example, this angle is 0.7 degrees, for example, the straight line of the lower lens segments (81, 121) in the light propagation direction (26) is inclined downwards more.
  • the light module (20) When the light module (20) is operated solely with this light bundle (143) - the light entry surfaces (63, 73) of the two other lens segments (61, 71) are darkened, for example - the result is e.g. at a distance of 25 meters, a illuminated area with only slight fluctuations in brightness.
  • the middle (71, 111) and the lower Lensensegmente (81, 121) of the primary (50) and the secondary lens (90) are generated results in a light distribution.
  • (150) uniform brightness without light or dark spots.
  • the boundaries (155) of the illuminated area (150) is out of focus at the sides and down, while the upper edge (153) is sharply defined by a horizontal line.
  • This upper edge (153) lies here directly below the horizon line (156), cf. FIG. 6 , which lies for example in the horizontal center longitudinal plane (22).
  • the height of the image (150) corresponds in the exemplary embodiment, at least in the sectional plane of the vertical central longitudinal plane (21) 130% of the height of the basic distribution, which is generated by means of the middle lens segments (71, 111).
  • the result in the FIG. 6 illustrated illuminated area (150).
  • the individual lines (159) connect points of the same intensity on the measuring wall (2).
  • the light intensity of the illuminated field (150) drops very sharply in the direction of the region above the horizon line (156). To the left and down, the light intensity drops continuously over an angle of, for example, 8 degrees, to the right, the light intensity drops, for example, in an angular range of 10 degrees.
  • the headlamp can be constructed so that the lower edges (66, 67) of the upper lens segments (61) fall from top left to bottom right.
  • FIG. 7 shows a dipped beam headlamp (210) with a single light module (220), the upper lens segment (261) is parallel to the horizontal center longitudinal plane (22) of the light module (220). Also, the adjoining middle lens segment (271) is aligned parallel to this plane (22).
  • the longitudinal section of this light module (220) in the vertical central longitudinal plane (22) is identical to the illustration of FIG. 2 ,
  • FIG. 8 illustrated light distribution (350).
  • the hot spot (351) is 1.5 degrees below the horizon (356).
  • the illuminated field (350) on the measuring wall (2) is approximately symmetrical to the vertical center longitudinal plane (21).
  • the horizontal cut-off (353) is clearly formed and forms the upper edge (353) of the illuminated field (350).
  • the lines of equal luminous intensity (359) are largely equidistant to the side and to the bottom. The light intensity drop to the edges is thus uniform without stripes and without cracks.
  • the FIG. 9 shows a low beam headlight (410) with, for example, eight light modules (420, 620).
  • the individual light modules (420, 620) are distributed in the vehicle body such that the vertical center longitudinal planes (21) each of two adjacent light modules (420, 620) enclose an angle of 4 degrees.
  • the light modules (420, 620) sit here in a common - not shown - housing, wherein the individual light modules (420, 620) are not separated from each other by partitions.
  • the low beam headlamp (410) has a width of 140 millimeters in this embodiment.
  • the light modules (420, 620) here each comprise a primary lens (450, 650) and a secondary lens (490), each of which consists of three lens segments (461, 471, 481, 501, 511, 521, 661, 671, 681) arranged one above the other. consist.
  • the middle lens segment (511) and the lower lens segment (521) of the secondary lens (490) are part of all the light modules (420, 620).
  • the light exit surfaces (514, 524) of these lens segments (511, 521) have the shape of gates.
  • the light bundles which pass through the central lens segments (471, 671) of the primary lenses (450) strike the middle lens segment (511) of the secondary lens (490) associated with these lens segments (471, 671).
  • the individual light bundles of the light modules (420, 620) arranged next to one another can penetrate one another.
  • the light beams emerging from the lower lens segments (481, 681) strike the mirror (530).
  • the mirror (530) has the shape of a part of a lateral surface of a cone portion.
  • the imaginary cone section in this embodiment has a circle as a base and as a top surface.
  • the imaginary cone axis lies outside of the low beam headlamp (410).
  • the lens segments (461, 471, 481) of the primary lenses (450) are at least approximately as formed as the lens segments (61, 71, 81) of FIG FIG. 1 shown Abblellingtscheinwerfers (10).
  • the shape of the primary lens (650) corresponds at least substantially to the shape of in the FIG. 7 illustrated primary lens (250).
  • the upper lens segments (501) are formed separately for each light module (420, 620). All of these lens segments (501) are directed to one area, the hot spot (551).
  • the dipped-beam headlamp (410) arises, for example, on a measuring wall (2), which is placed for example at a distance of 25 meters, in the FIG. 10 illustrated light distribution (550).
  • the middle and lower lens segments (471, 511, 481, 521, 671, 511, 681, 521) each produce background light distributions that overlap. This results in a streak and spot-free image, which has the shape of a wide oval in this embodiment.
  • the width of this oval is limited, for example, by two planes which intersect at the geometric center of the dipped-beam headlamp (410) and which together enclose an angle of, for example, 50 degrees.
  • the height of the oval is limited by the horizontal center longitudinal plane (22) of all modules (420, 520) and another, the measuring wall (2) below the horizontal center longitudinal plane (22) intersecting plane, wherein the planes, for example, in the geometric center of the dipped beam headlamp ( 410) and enclose an angle of 10 degrees with each other.
  • the upper edge (553) of the illuminated area (550) is an approximately horizontally formed high-contrast boundary. In addition to the other edges, the light intensity of the illumination drops continuously. Due to the juxtaposed light modules (420, 620) arise at least in the width of the illumination no distortion, color aberrations or shades.
  • the basic light distribution is superimposed by the light passing through the upper lens segments (461, 501, 661, 501). This creates a high-intensity hotspot (551).
  • a high-intensity hotspot (551).
  • Above the cut-off (553) for example, an illuminated, at least approximately right-angled triangle above the horizontal plane (556) is generated on the right.
  • An imaginary catheter lies on the extension of the cut-off line (553).
  • the hypotenuse (561) makes an angle of 15 degrees with this catheter and rises to the right.
  • the illumination of this triangle is effected by means of the lens segments (461, 501) of the middle light modules (450).
  • the brightness of the illumination is less than the illumination of the hot spot (551), which is hit by light from all light modules (420, 620).
  • the distance between the primary lens (50, 250, 450) and the secondary lens (90, 290, 490) can be increased.
  • at least the upper lens segment (61, 261, 461, 661) of the primary lens (50, 250, 450, 650) is to be aligned so that only the light entry surface (103) of the secondary lens (90, 290, 490) is illuminated.
  • the curvature of the light exit surface (61, 264, 464, 664) can be increased.
  • the secondary lens (90, 290, 490) or individual lens segments (101, 111 , 121, 301, 311, 321, 501, 511, 521) of this lens (90, 290, 490) are displaced downwards or upwards.
  • the use of other lens sections for the lens segments (101, 111, 121, 301, 311, 321, 501, 511, 521) is also conceivable.
  • the primary lens (50, 250, 450) is also to be designed here so that the individual partial light bundles (141 - 143) the associated lens segment (101, 111, 121, 301, 311, 321, 501, 511, 521) of the secondary lens (90, 290, 490).
  • the hot spot (151, 351, 551) can also be generated by means of the light beam (143), which is reflected by the mirror (130, 530).
  • a change in the intensity distribution within the light bundles (141, 142, 143) takes place, for example, by means of the primary lens (50, 250, 450).
  • the individual lens segments (61, 71, 81, 261, 271, 281, 461, 471, 481, 661, 671, 681) are displaced downwards or upwards.
  • other lens sections may be chosen or e.g. the curvature of the upper lens segment (61, 261, 461, 661) is increased in the horizontal and / or vertical direction, or the inclination of the lens segment (61, 261, 461, 661) is changed.
  • the dipped-beam headlamp (10, 210, 410) or the single light module (20, 220, 420, 620) may be of e.g. clear disc which is optically downstream of the secondary lens (90, 290, 490).
  • the condenser lens (40) it is also possible to use at least one light guide body, which directs the light emitted by the light source (30) to the light entry surfaces (63, 73, 83) of the primary lens (50). Due to the large-area coupling, the position of the light-emitting chip (33) is not critical.
  • the middle light modules (420) can be supplemented by adjacent light modules, in which the upper lens segment (461) is inclined in the other direction. For example, then by means of a Aperture the upper lens segments (461) of these light modules (20) are opened or closed. The basic distribution can then be generated with all light modules (20).

Claims (16)

  1. Projecteur de croisement avec au moins un module lumineux (20), sachant que chaque module lumineux présente au moins une source lumineuse (30) et au moins une lentille primaire (50) placée en aval de la source lumineuse et que le source lumineuse (30) est une diode électroluminescente, et que le projecteur de croisement (10 ; 210 ; 410) a au moins une lentille secondaire (90 ; 290 ; 490) optiquement placée en aval de la lentille primaire (50 ; 250 ; 450, 650) ou des lentilles primaires (50 ; 250 ; 450, 650), caractérisé en ce
    - que la lentille primaire (50 ; 250 ; 450, 650) ainsi que la lentille secondaire (90 ; 290 ; 490) présente au moins deux segments de lentille superposés (61, 71, 81 ; 101, 111, 121 ; 261, 271, 281 ; 301, 311, 321 ; 461, 471, 481 ; 501, 511, 521 ; 661, 671,681),
    - qu'un segment de lentille (101, 111, 121 ; 301, 311, 321 ; 501, 511, 521) d'une lentille secondaire (90, 290, 490) est associé à au moins un segment de lentille (61, 71, 81 ; 261, 271, 281 ; 461, 471, 481 ; 661, 671, 681) d'une lentille primaire (50, 250, 450, 50),
    - qu'au moins un segment de lentille (61, 261, 461, 661) de la lentille primaire (50, 250, 450, 650) et le segment de lentille (101, 301, 501) de la lentille secondaire (90, 290, 490) qui lui est associé sont situés hors de l'axe optique (25) du module lumineux (20 ; 220 ; 420 ; 620),
    - qu'au moins la surface de sortie de lumière (64, 264, 464, 664) de ce segment de lentilles (61, 261, 461, 661) de la lentille primaire (50, 250, 450, 650) présente une surface enveloppante courbée au moins biaxiale, et
    - que la somme des rayons de courbure d'au moins un élément de surface de la surface enveloppante de cette surface de sortie de lumière (64, 264, 464, 664) dans deux plans perpendiculaires est inférieure à la somme der rayons de courbure d'au moins un élément de surface de la surface enveloppante d'au moins une autre surface de sortie de lumière (74, 84 ; 274, 284 ; 474, 484 ; 674, 684) de la lentille primaire (50, 250, 450, 650) dans deux plans perpendiculaires.
  2. Projecteur de croisement selon la revendication 1, caractérisé en ce que la somme der rayons de courbure de chaque élément de surfaces de la surface enveloppante de la surface de sortie de lumière (64, 264, 464, 664) dans deux plans perpendiculaires est inférieure à la somme der rayons de courbure de chaque élément de surface de la surface enveloppante d'au moins une autre surface de sortie de lumière (74, 84 ; 274, 284 ; 474, 484 ; 674, 684) de la lentille primaire (50, 250, 450, 650) dans deux plans perpendiculaires.
  3. Projecteur de croisement selon la revendication 1, caractérisé en ce que la surface enveloppante du segment de lentille (64, 264, 464, 664) a la forme d'une surface convexe triaxiale.
  4. Projecteur de croisement selon la revendication 1, caractérisé en ce que l'enveloppante du segment de lentille (64, 264, 464, 664) présente, dans un plan parallèle au plan médian longitudinal horizontal (22) du module lumineux (20, 220, 420, 620), une courbure qui est inférieure à plus faible courbure de l'enveloppante (59) située dans le plan médian longitudinal vertical (21).
  5. Projecteur de croisement selon la revendication 1, caractérisé en ce qu'une lentille convergente (40) est placée entre la source lumineuse (30) et la lentille primaire (50, 250, 450, 650).
  6. Projecteur de croisement selon la revendication 1, caractérisé en ce que la distance entre le segment de lentille (61, 261, 461, 661) et l'axe optique (25) est supérieure à 5 % de la distance entre la puce électroluminescente (33) de la source lumineuse (30) et la surface de sortie de lumière (124, 324, 524) de la lentille secondaire (90, 290, 490) la plus éloignée dans le sens de propagation de la lumière (26).
  7. Projecteur de croisement selon la revendication 1, caractérisé en ce que la surface enveloppante de la surface de sortie de lumière (74, 274, 474, 674) du segment de lentille (71, 271, 471, 671) est une section d'une enveloppe cylindrique ou toroïde dont les centres de courbure (79) sont situés dans un plan parallèle au plan médian longitudinal horizontal (22) du module lumineux (20, 220, 420, 620).
  8. Projecteur de croisement selon la revendication 1, caractérisé en ce que le segment de lentille (61, 461) est cunéiforme.
  9. Projecteur de croisement selon la revendication 8, caractérisé en ce que le bord inférieur (66) du segment de lentille (61, 461) inclut avec le plan médian longitudinal horizontal (22) un angle compris entre 5 et 25 degrés.
  10. Projecteur de croisement selon la revendication 1, caractérisé en ce qu'il présente un miroir (130 ; 530) dont la surface réfléchissante (131), dans une vue en élévation d'un module lumineux (20 ; 220 ; 420 ; 620), se situe entre la lentille primaire (50 ; 250 ; 450 ; 650) et la lentille secondaire (90 ; 290 ; 490).
  11. Projecteur de croisement selon la revendication 10, caractérisé en ce que le miroir (130) est un miroir plan.
  12. Projecteur de croisement selon la revendication 1, caractérisé en ce qu'il présente un deuxième module lumineux (420, 620) dont les lentilles secondaires (490) ont au moins un segment de lentille commun (511, 521).
  13. Projecteur de croisement selon la revendication 12, caractérisé en ce que les segments de lentille excentrés (461, 661) du module lumineux (420, 620) sont orientés sur la même zone cible (551).
  14. Projecteur de croisement selon la revendication 1, caractérisé en ce que la largeur de chaque segment de lentille (61, 71, 81, 101, 111, 121 ; 261, 271, 281, 301, 311, 321 ; 461, 471, 481, 501, 511, 521, 661, 671, 681) perpendiculaire au plan médian longitudinal vertical (21) est supérieure à sa hauteur dans le plan médian longitudinal vertical (21).
  15. Projecteur de croisement selon la revendication 1, caractérisé en ce que quand la source lumineuse (30) fonctionne, les surfaces de sortie de lumière (64, 74, 84 ; 264, 274, 284 ; 464, 474, 484 ; 664, 674, 684) de la lentille primaire (50, 350, 450, 650) ne sont pas entièrement éclairées.
  16. Projecteur de croisement selon la revendication 1, caractérisé en ce qu'exactement un segment de lentille (101 ; 301 ; 501) de la lentille secondaire (90, 290, 490) est associé au segment de lentille (61 ; 261 ; 461 ; 661) de la lentille primaire (50, 350, 450, 650).
EP07002686A 2006-02-14 2007-02-08 Feu de croisement doté d'une production d'un point chaud Expired - Fee Related EP1818600B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006006634A DE102006006634A1 (de) 2006-02-14 2006-02-14 Abblendlichtscheinwerfer mit Hot-Spot-Erzeugung

Publications (3)

Publication Number Publication Date
EP1818600A2 EP1818600A2 (fr) 2007-08-15
EP1818600A3 EP1818600A3 (fr) 2007-09-26
EP1818600B1 true EP1818600B1 (fr) 2009-04-22

Family

ID=37904393

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07002686A Expired - Fee Related EP1818600B1 (fr) 2006-02-14 2007-02-08 Feu de croisement doté d'une production d'un point chaud

Country Status (3)

Country Link
US (1) US7645061B2 (fr)
EP (1) EP1818600B1 (fr)
DE (2) DE102006006634A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007040760B4 (de) * 2007-08-29 2016-03-24 Automotive Lighting Reutlingen Gmbh Projektionsmodul eines Fahrzeugscheinwerfers
DE102009053581B3 (de) * 2009-10-05 2011-03-03 Automotive Lighting Reutlingen Gmbh Lichtmodul für eine Beleuchtungseinrichtung eines Kraftfahrzeugs
JP5618721B2 (ja) * 2010-09-13 2014-11-05 株式会社小糸製作所 レンズの製造方法
CN104603524B (zh) * 2012-08-28 2017-03-01 三菱电机株式会社 前照灯用光源以及前照灯
CN105358902B (zh) * 2013-06-26 2018-06-22 市光工业株式会社 车辆用灯具
US9933127B2 (en) * 2013-08-08 2018-04-03 Georgiy Pavlovich Sapt Vehicle light
US10363860B2 (en) 2013-12-12 2019-07-30 Mitsubishi Electric Corporation Headlight module and headlight apparatus
US9404632B2 (en) * 2014-06-20 2016-08-02 GM Global Technology Operations LLC Lens assembly for a vehicle
JP6576705B2 (ja) * 2015-06-23 2019-09-18 スタンレー電気株式会社 車両用灯具
DE102018112453A1 (de) 2018-05-24 2019-11-28 HELLA GmbH & Co. KGaA Vorfeldlichtmodul
DE102018217215A1 (de) * 2018-10-09 2020-04-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Abblendlichtscheinwerfer
WO2020233297A1 (fr) * 2019-05-20 2020-11-26 华域视觉科技(上海)有限公司 Ensemble d'éléments optiques de lampe de véhicule, module d'éclairage de véhicule, lampe de véhicule et véhicule
US10648637B1 (en) 2019-06-20 2020-05-12 Valeo North America, Inc. Optical device for a lighting and/or signalling device of an automobile vehicle

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19830396C2 (de) * 1998-07-08 2000-07-06 Bosch Gmbh Robert Optische Ablenkanordnung mit gesteuert veränderbarer Ablenkung als Bestandteil eines Kraftfahrzeugscheinwerfers
FR2839138B1 (fr) * 2002-04-30 2005-01-07 Valeo Vision Dispositif projecteur bifonction pour vehicule automobile
JP4024628B2 (ja) * 2002-09-03 2007-12-19 株式会社小糸製作所 車両用前照灯
DE10308704A1 (de) * 2003-02-28 2004-11-11 Audi Ag Kraftfahrzeugscheinwerfer
FR2888917B1 (fr) * 2005-07-21 2009-11-20 Valeo Vision Dispositif d'eclairage ou de signalisation, notamment pour vehicule automobile
DE102006006635A1 (de) * 2006-02-14 2007-08-16 Schefenacker Vision Systems Germany Gmbh Abblendlichtscheinwerfer, der einen kontraststark ausgebildeten Cut-off erzeugt

Also Published As

Publication number Publication date
US20090262546A1 (en) 2009-10-22
DE102006006634A1 (de) 2007-08-16
DE502007000621D1 (de) 2009-06-04
EP1818600A2 (fr) 2007-08-15
US7645061B2 (en) 2010-01-12
EP1818600A3 (fr) 2007-09-26

Similar Documents

Publication Publication Date Title
EP1818599B1 (fr) Feu de croisement, produisant une coupure à contraste importante
EP1818600B1 (fr) Feu de croisement doté d'une production d'un point chaud
DE102004005932B4 (de) Fahrzeugscheinwerfer
EP2910847B1 (fr) Module d'éclairage d'un projecteur de véhicule automobile et projecteur avec un tel module d'éclairage
DE102005003367B4 (de) Leuchteinheit mit Lichtteiler
DE602004002043T2 (de) Elliptische Beleuchtungseinheit ohne Lichtblende zur Erzeugung eines Abblendlichtbündels und Scheinwerfer mit einer derartigen Belleuchtungseinheit
EP2799762B1 (fr) Module d'éclairage de phare de véhicule automobile
DE102013013995B4 (de) Scheinwerferlinse für einen Fahrzeugscheinwerfer
EP1864053B1 (fr) Phare de vehicule
DE102004043706B4 (de) Optisches System für einen Kraftfahrzeugscheinwerfer, Beleuchtungseinheit für einen Kraftfahrzeugscheinwerfer und Kraftfahrzeugscheinwerfer
EP3080513B1 (fr) Dispositif d'éclairage de véhicule automobile
EP2505910B1 (fr) Phare de véhicule automobile équipé d'une source lumineuse semi-conductrice
EP2523022B1 (fr) Module d'éclairage pour un phare de véhicule automobile destiné à la production d'une distribution lumineuse variable et phare de véhicule automobile doté d'un tel module d'éclairage
WO2011154470A1 (fr) Accessoire optique constitué d'un matériau transparent pour la focalisation de lumière, ensemble de lentilles comportant au moins un tel accessoire optique, et module de lumière doté d'un tel ensemble de lentilles
DE102009037698A1 (de) Fahrzeugbeleuchtungseinheit und Fahrzeugleuchte
DE102008036845B4 (de) Beleuchtungsvorrichtung
DE19814479A1 (de) Scheinwerfer für Fahrzeuge nach dem Projektionsprinzip
EP3301350A1 (fr) Module d'éclairage pour phare de véhicule automobile
DE112014003799B4 (de) Doppelstrahl-Scheinwerfer
DE102018105720B4 (de) Lichtmodul für Kraftfahrzeugscheinwerfer
EP1577608A2 (fr) Luminaire avec une structure optique pour influencer le rayonnement
DE202014003075U1 (de) Beleuchtungseinrichtung
DE102004004261B3 (de) Anordnung zur gleichmäßigen oder vorgebbaren Beleuchtung von großen Flächen
DE102012215124A1 (de) Beleuchtungseinrichtung mit Lichtquelle, Lichtleitkörper und Reflektor
WO2019076550A1 (fr) Dispositif d'éclairage pour phare de véhicule automobile

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20080307

AKX Designation fees paid

Designated state(s): DE FR IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR IT

REF Corresponds to:

Ref document number: 502007000621

Country of ref document: DE

Date of ref document: 20090604

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20100125

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20110501

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20120222

Year of fee payment: 6

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502007000621

Country of ref document: DE

Representative=s name: RPK PATENTANWAELTE REINHARDT, POHLMANN UND KAU, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20140219

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20140219

Year of fee payment: 8

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502007000621

Country of ref document: DE

Representative=s name: RPK PATENTANWAELTE REINHARDT, POHLMANN UND KAU, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502007000621

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20151030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150302

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140208