EP1818599B1 - Dipped headlight which creates a strongly contrasted cut-off - Google Patents

Description

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.

From the DE 10 2004 053 303 A1 is a low beam headlamp with several different lighting units known. The light distributions of the individual lighting units overlap in areas. Apertures are used to create the cut-off. This can lead eg to color deviations, stripes and stains.

The publication EP 1 526 581 A2 also discloses a low beam headlamp with multiple LED illumination units.

The present invention is therefore based on the problem of developing a compact low-beam headlamp whose light distribution has a uniform basic distribution and a pronounced cut-off.

This problem is solved with the features of the main claim. In addition, the low beam headlamp has at least a secondary lens which is optically connected downstream of the primary lens or 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. During operation of the light source, the edges of the light entry surfaces create edges of objects in the lens segments of the primary lens and the secondary lens projects the objects and images them at least in the vertical direction. The at least imaginary node beams emanating from the secondary lens, emanating from said edges of both objects and spanning a common vertical plane, enclose an angle that is less than 1 degree.

Figur 1:

Abblendlichtscheinwerfer mit einem Lichtmodul;

Figur 2:

Längsschnitt durch das Lichtmodul aus Fig. 1;

Figur 3:

Mittenlängsebenen des Lichtmoduls nach Figur 1;

Figur 4:

Strahlenmodell zu Figur 2;

Figur 5:

Draufsicht auf Figur 1;

Figur 6:

Lichtverteilung mit 15 Grad-Anstieg;

Figur 7:

Abblendlichtscheinwerfer zur Erzeugung eines waagerechten Cut-offs;

Figur 8:

Lichtverteilung mit waagerechtem Cut-off;

Figur 9:

Abblendlichtscheinwerfer mit mehreren Lichtmodulen;

Figur 10:

Lichtverteilung des Scheinwerfers aus Figur 9.

Further details of the invention will become apparent from the dependent claims and the following description of schematically illustrated embodiments.

FIG. 1:

Dipped-beam headlamp with a light module;

FIG. 2:

Longitudinal section through the light module Fig. 1 ;

FIG. 3:

Center longitudinal planes of the light module after FIG. 1 ;

FIG. 4:

Ray model too FIG. 2 ;

FIG. 5:

Top view FIG. 1 ;

FIG. 6:

Light distribution with 15 degree rise;

FIG. 7:

Dipped beam headlamps for creating a horizontal cut-off;

FIG. 8:

Light distribution with horizontal cut-off;

FIG. 9:

Dipped beam headlamp with multiple light modules;

FIG. 10:

Light distribution of the headlight off FIG. 9 ,

The 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.

In the FIG. 1 is shown 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 , In the FIG. 4 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 , In the FIG. 6 Finally, 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. Here, 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 here from the light source (30) in FIG Direction of the secondary lens (90), ie, for example, in the direction of travel of the motor vehicle forward.

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).

In this exemplary embodiment, 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 apex angle of this cone is for example 130 degrees. On its side facing the primary lens (50), 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 central 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 (63, 73, 83, 103, 113, 123, 64, 74, 84, 104, 114, 124) 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 major axes of the envelope surfaces or envelope surfaces may also include angles other than 90 degrees with each other.

When an envelope surface or envelope is cut in a plane, e.g. in the vertical (21) or in the horizontal central longitudinal plane (22), the result is 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. For example, in the lower lens segment (81), 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 offset from the light propagation direction (26). The center transverse surface (75) of the central lens segment (71) is for example normal to the optical axis (25). In the lower lens segment (81) is in this Embodiment, the central transverse surface (85), for example inclined by 16 degrees to a normal plane of the optical axis (25), wherein the upper side (82) in the light propagation direction (26) is inclined forwardly.

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. For example, the envelope surfaces of these surfaces (63, 64) are each lateral surface sections of a three-dimensionally curved aspherical surface. For example, both surfaces are designed such that two main axes span a plane which lies parallel to the lower edge (66) and intersects with the horizontal central longitudinal plane (22) in a straight line parallel to the optical axis (25). One of the main axes and the third main axes then span a plane arranged normally to this 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 Torusmantelflächen, Ellipsoidmantelflächen, 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).

In the vertical center longitudinal plane (21) has in the representation of FIG. 2 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) lies 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 three percent of this length above the horizontal center longitudinal plane (22). Also the radius of curvature of the envelope contour the light exit surface (64) can increase or decrease toward the upper and / or lower edge.

In a plane parallel to the horizontal center longitudinal plane (22) through the center of curvature (69) in this embodiment, 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) in this exemplary embodiment are at least approximately sections of lateral surfaces of a three-axis curved body with principal axes lying normal to one another. Two main axes span the vertical center longitudinal plane (21) or a plane parallel to it. 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).

In the in the FIGS. 1 and 2 illustrated embodiment, the radius of curvature of Schmiegkreises 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).

In a plane parallel to the horizontal center longitudinal plane (22) through the center of curvature (79), the radius of curvature of the light exit surface (74) in this embodiment is 20% greater than the radius of curvature of the envelope surface of the light exit surface (64) of the upper lens segment (61) in a plane parallel to the horizontal center longitudinal plane (22). Of the The radius of curvature of the surface element of the light exit surface (74) in this plane is at least 15% greater than the corresponding radius of curvature of the upper lens segment (61). The radius of curvature of the light exit surface (74) in a horizontal plane may also be infinite. The envelope surface of the light exit surface (74) then has the shape of a portion of a cylinder jacket surface. The sum of the two radii of curvature is thus greater than the sum of the corresponding radii of curvature of the upper lens segment (61).

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). In the plane of curvature inclined to the horizontal center longitudinal plane (22), the radius of curvature is, for example, 20% greater than the radius of curvature of the upper lens segment (61) in the corresponding one eg horizontal main 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).

In the secondary lens (90) in the exemplary embodiment, 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. For example, in the upper lens segment (101), 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%. In the lower lens segment (121), 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. In the direction of the upper lens segment (101) it protrudes by 8% of the reference length (27) over the horizontal center longitudinal plane (22), downwards by 13% of the reference length (27) via this plane (22). 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. For example, 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 Schmiegkreises 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 the light propagation direction (26) offset from the light emitting chip (33) and 10% of the reference length (27) above the horizontal center longitudinal plane (22). The Schmiegkreis in the zur vertical center plane (21) inclined main axis 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.

In the middle lens segment (111), 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.

In the lower lens segment (121), 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.

In the middle (111) and lower lens segment (121), 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. For example, 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 marginal areas, outside of the used reflection area (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) and vaults 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 be designed, for example, in one embodiment with a large condenser lens (40) or with light-guiding bodies without a mirror (130).

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). Thus, e.g. 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). In addition, 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).

During operation of the light source (30), 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 1 m. The radiation is divergent and has only a small pronounced maximum. The light intensity of the light source (30) drops towards 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).

It is also conceivable to use a light-emitting diode (30) with a narrower radiation characteristic, e.g. with +/- 30 degrees to the optical axis (25) to use. Optionally, 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).

In the FIG. 4 is a beam path of the individual partial light bundles (141 - 143), for example, shown. The 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. In the embodiment shown here is the Light beam (141) of light emitted within an angular segment between 25 degrees and 45 degrees to the optical axis (25) of the light source (30). 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). Here it is slightly bundled in the vertical direction and in the horizontal direction. The opening angle of the light beam in the horizontal direction is for example 13 degrees, in the vertical direction e.g. 10 degrees.

To illustrate the beam path is in the FIG. 4 Simplifies a portion of the center transverse surface (65) shown as an object (165). In addition, the beam paths of thin lenses are shown for illustration as beam paths. From the upper and lower end points of the object (165), the parallel beams (162, 166), the node beams (163, 167) and the focus beams (164, 168) extend to the secondary lens (90). The ray model also shows the imaginary rays that are outside the imaging area lie, such as the focal point beam (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.

At a distance of, for example, 25 meters from the secondary lens (90) - this distance is greater than one hundred times the radius of curvature of the envelope surface in the vertical central longitudinal plane (21) - the light beam (141) produces, for example, a bright region (151) bounded by a polygon. , a so-called hot spot (151), cf. FIG. 6 , In the vertical direction, the object (165) is in focus, in the horizontal direction, a blurred stain is created. In this case, 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. Since the partial light bundle (141) has no uniform light intensity, 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. Here, 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). When exiting the primary lens (50) - also in this lens segment (71) only part of the light exit surface (74) is illuminated - 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).

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 generated 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). In the case of the partial light bundle (142) which images the lower end of the object (175), for example, 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). When exiting the secondary lens (90), 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).

In the sole operation of the light module (20) with this light bundle (142) - 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. FIG. 6 , The other boundaries (155) of the illuminated area (150) are out of focus. The cut-off (153) is here, for example, on the horizontal plane (156), which is connected to the horizontal center longitudinal plane (22). coincides. The cut-off can, for example, also be 0.7 degrees below the horizon line (156), depending on the installation in the motor vehicle.

In the in the FIGS. 1 and 2 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). Thus, on a measuring wall, for example at a distance of 25 meters, 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). In this case, 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). Here, 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 beam (143) which is reflected near the secondary lens (90) enters almost horizontally in the lower region of the light entry surface (123).

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.

In the radiation model of FIG. 4 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). In a lens segment (111, 121) whose lens center is not formed, the node beam (177, 187) is an imaginary node beam (177, 187).

Also in the beam path of the light beam (143), the focal point beam (186) and the center beam (187), which emanate from the lower edge of the virtual object (185), at least approximately coincide. In the vertical direction, the light bundle (143) in this embodiment is widened more than the light bundle (142). The light distribution produced on the measuring wall is here 30% higher than the image produced by means of the middle lens segments (71, 111). By this amount, the quotient of the height of the object (185) and the distance of the lens segments (81, 121) is greater as 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.

In the exemplary embodiment, 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.

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.

In the superimposition of the two basic distributions, which are generated in the exemplary embodiment by the middle (71, 111) and the lower lens segments (81, 121) of the primary (50) and the secondary lens (90), a light distribution (150) results more uniformly Brightness without light or dark Stains. 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).

If, in addition, the light bundle (141) generated by means of the upper lens segments (61, 101) is then superimposed, 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). Above the hot spot (151) lies on the horizon line (156) the horizontal cut-off (153), which merges into a 15 degree rise (154). At this edge (153, 154), 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.

When operating the low beam headlamp in a motor vehicle so creates a light intensity distribution, as generated for example by conventional halogen headlamps. The glare of oncoming traffic is prevented by the arrangement of the cut-off (153) below the horizontal plane (156). At the same time, the 15 degree increase allows illumination of eg the right roadside.

When using such a low beam headlamp for left-hand traffic, 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.

The 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 FIG. 2 ,

When operating the low beam headlamp (210) results on a measuring wall (2), for example, in the 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). For example, the individual light modules (420, 620) are distributed in the vehicle body in such a way that the vertical central longitudinal planes (21) of respectively 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 by partitions from each other. 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. In this case, in each case 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). In this case, 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 the dipped beam headlamp (410).

For example, in the four central light modules (420), 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 Abblendlichtscheinwerfers (10). In the other light modules (620), which are arranged here at the edge of the dipped-beam headlamp (410), the shape of the primary lens (650) corresponds at least substantially to the shape of the in the FIG. 7 illustrated primary lens (250). In the secondary lenses (490), 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).

When operating 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). 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).

If the intensity of the hot spot (151, 351, 551) is to be increased, the distance between the primary lens (50, 250, 450) and the secondary lens (90, 290, 490) can be increased. In this case, then 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. For this purpose, for example, the curvature of the light exit surface (61, 264, 464, 664) can be increased.

In order to shift the hot spot (151, 351, 551) or the entire light distribution (150, 350, 550) downwards or upwards, 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 embodied here in such a way that the individual partial light bundles (141-143) separate 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). Here, e.g. the individual lens segments (61, 71, 81, 261, 271, 281, 461, 471, 481, 661, 671, 681) are displaced downwards or upwards. Also, 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).

Instead of 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.

If, for example, the low-beam headlight (410) is to be used for left-hand traffic, then, for example, 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, the upper lens segments (461) of these light modules (20) can then be opened or closed by means of a diaphragm. The basic distribution can then be generated with all light modules (20).

LIST OF REFERENCE NUMBERS

1

Environment, air

2

measuring wall

10, 210, 410

low beam headlights

20, 220, 420, 620

light modules

21

vertical middle longitudinal plane

22

horizontal middle longitudinal plane

23

Tangential plane (114, 314, 514)

24

Tangential plane (124, 324, 524)

25

optical axis

26

Light propagation direction

27

reference length

30

Light source, LED

33

light emitting chip

34

Light distribution body, shaped radiation body

40

condenser

42

concave arched lens surface

43

boundary line

45

converging lens

47

annular flange

50, 250, 450, 650

primary lenses

51

mounting flanges

59

Hull contour of (64) in (21)

61, 261, 461, 661

upper lens segments

62

top

63

Light entrance surface of (61)

64, 264, 464, 664

Light exit surfaces of (61, 261, 461, 661)

65

Middle transverse surface

66

Lower edge of (63)

67

Lower edge of (64)

68

Center of curvature of (63)

69

Center of curvature of (64)

71, 271, 471, 671

middle lens segments

72

top

73

Light entrance surface of (71)

74, 274, 474, 674

Light exit surfaces of (74, 274, 474, 674)

75

Middle transverse surface

76

Lower edge of (73)

77

Lower edge of (74)

78

Center of curvature of (73)

79

Center of curvature of (74)

81, 281, 481, 681

lower lens segments

82

top

83

Light entry surface, plane surface

84, 284, 484, 684

Light emission surfaces of (81, 281, 481, 681)

85

Middle transverse surface

86

Lower edge of (84)

87

Top edge of (83)

88

Top edge of (84)

89

Center of curvature of (84)

90, 290, 490

secondary lenses

91

mounting flanges

101, 301, 501

upper lens segments

103

Light entry surface

104, 304, 504

Light exit surface of (101, 301, 501

109

Center of curvature

111, 311, 511

middle lens segments

113

Light entry surface

114, 314, 514

Light exit surfaces of (111, 311, 511)

118

contour

119

Center of curvature

121, 321, 521

lower lens segments

123

Light entry surface

124, 324, 524

Light-emitting surfaces of (121, 321, 521)

126

Lower edge of (123)

128

Contour of (124)

129

Center of (128)

130, 530

mirror

131

reflection area

140

light

141 - 143

Divided light beam

150, 350, 550

illuminated areas, light distribution

151, 351, 551

Hot spots, target area

152

Intensity maximum of (151)

153, 353, 553

Top edge, cut-off line

154, 554

15-degree increase

155

limitations

156, 356, 556

horizon plain

159, 359, 559

lines

162, 166

Parallel rays of (165)

163, 167

Node rays of (165)

164, 168

Focus rays of (165)

165

object

172, 176

Parallel rays of (175)

173, 177

Node rays of (175)

174, 178

Focus rays of (175)

175

object

180

object

181

virtual picture of (81)

182

Parallel beam of (185)

183

Node beam of (185)

184

Focal point of (185)

185

virtual object

186

Parallel beam of (185)

187

Node beam of (185)

188

Focal point of (185)

189

virtual image of (87)

561

hypotenuse

Claims (16)

1. An antidazzle headlamp including at least one light module, wherein each light module includes at least one light source disposed downstream of at least one primary lens and wherein the light source is a light emitting diode,
   characterized in

   - that the antidazzle headlamp (10, 210, 410) includes at least one secondary lens (90, 290, 490), the at least one secondary lens (90, 290, 490) being disposed optically downstream of the at least one primary lens (50, 250, 450, 650);

   - that the primary lens (50, 250, 450, 650) together with the secondary lens (90, 290, 490) are provided with at least two lens segments (61, 71, 81; 101, 111, 121; 261, 271, 281; 301, 311, 321; 461, 471, 481; 501, 511, 521; 661, 671, 681) which are arranged over one another;

   - that one lens segment (101, 111, 121; 301, 311, 321; 501, 511, 521) of the secondary lens (90, 290, 490) is associated with at least one lens segment (61, 71, 81; 261, 271, 281; 461, 471, 481, 661, 671, 681) of one primary lens (50; 250; 450, 650);

   - that during operation of the light source (30) the edges (76, 87) of the light entry plane (73, 83) generate objects (175, 185) in the lens segments (71, 81) of the primary lens (50; 250; 450; 650), and the secondary lens (90, 290, 490) projects these objects (175, 185) and images it in at least in a vertical direction; and

   - that the rays (177, 187) exiting from the secondary lens (90, 290, 490) are at least virtual focal point rays (177, 187) subtending an angle which is less than 1 degree, the rays both exiting from the aforementioned edge of both objects (175, 185) and a common vertical plane.
2. An antidazzle headlamp as claimed in claim 1, characterized in that the product of the minimum curvature of the surface of the light exit plane (104, 114, 124; 304, 314, 324; 504, 514, 524) of the secondary lens (90, 290, 490) and the object height of the primary lens (50, 250, 450) in the vertical mid-plane (21) of the light module (20, 220, 420, 620) for each paring of the lens segments (61, 101; 71, 111; 81, 121; 261, 301; 271, 311; 281, 321; 461, 501; 471, 511; 481, 521; 661, 501; 671, 511; 681, 521) from the primary lens (50, 250, 450) and the secondary lens (90, 290, 490) are maximally differing from one another by 30%.
3. An antidazzle headlamp as claimed in claim 1, characterized in that the surface of the light exit plane (104, 114, 124; 304, 314, 324; 504, 514, 524) of all of the lens segments (101, 111, 121; 301, 311, 321; 501, 511, 521) of the secondary les (90, 290, 490) are convexly curved in at least in the vertical mid-plane (21).
4. An antidazzle headlamp as claimed in claim 1, characterized in that all the lens segments (101, 111, 121; 301, 311, 321; 501, 511, 521) of the secondary lens (90, 290, 490) comprises at least a homogeneous portions of optical lenses.
5. An antidazzle headlamp as claimed in claim 1, characterized in that in a plan of a light module (20, 220, 520, 620) there is included at least a mirror (130, 530) between the primary lens (50, 250, 450, 650) and the secondary lens (90, 290, 490), the mirror reflecting a picture of the object (180) completely in the direction of the corresponding lens segments (121, 321, 521) of the secondary lens (90, 290, 490).
6. An antidazzle headlamp as claimed in claim 5, characterized in that the mirror (130, 530) is a planar mirror, or that the mirror (130, 530) is a section of a cone-shaped surface, wherein the virtual cone axis lies outside the antidazzle headlamp (10, 210, 410).
7. An antidazzle headlamp as claimed in claim 6, characterized in that in the cross-section of the vertical mid-plane (21) through a light module (20, 220, 420, 620) of the mirror (130, 530) is normal to the plane of the semiangle of the light entry plane (83, 123) of the lens segments (81, 281, 481, 681) of the primary lens (50, 250, 450, 650) and of its corresponding lens segments (121, 321, 521) of the secondary lens (90, 290, 490).
8. An antidazzle headlamp as claimed in claim 1, characterized in that the breadth of each of the lens segments (61, 71, 81, 101, 111, 121; 261, 271, 281, 301, 311, 321; 461, 471, 481, 501, 511, 521, 661, 571, 681) normal to the vertical mid-plane (21) is larger than its height in the vertical mid-plane (21).
9. An antidazzle headlamp as claimed in claim 1, characterized in that the primary lens (50, 250, 450, 650) and the secondary lens (90, 290, 490) are each provided with three lens segments (61, 71, 81; 101, 111, 121; 261, 271, 281; 301, 311, 321; 461, 471, 481; 501, 511, 521, 661, 671, 681),
10. An antidazzle headlamp as claimed in claim 1, characterized in that at least two mutually associated lens segments (111, 121; 311, 321, 511, 521) of the secondary lens (90, 290, 490) have light exit planes (114, 124; 314, 324; 514, 524), the exit planes being portions of a cylindrical exterior surface or a toroidal exterior surface.
11. An antidazzle headlamp as claimed in claim 1, characterized in that for each point of an edge (76) of the light entry plane (73) of the lens segments (71; 271; 471; 671) of the primary lens (50; 250; 450; 650) there is a point of the corresponding light exit plane (114; 314; 514) of the secondary lens (90; 290; 490), wherein these points lie on a straight line, the line being normal to a tangential plane (23) of the point in the light exit plane (114; 314; 514) and being normal to a tangential plane in the intersection point of the straight line through the light entry plane (113) of the secondary lens (90; 290; 490).
12. An antidazzle headlamp as claimed in claim 11, characterized in that for each point of a homogenous edge (189) of a second lens segment (181) there is a point of the corresponding light exit plane (124; 324; 524) of the secondary lens (90, 290, 490), wherein this point lies on a straight line, the line being normal to a tangential plane (24) in which the light exit plane (124; 324; 524) is normal to a tangential plane of the point in the light exit plane (124; 324; 524)and being normal to a tangential plane in the intersection point of the straight line through the light entry plane (123) of the secondary lens (90; 290; 490), and that two of the aforementioned straight lines subtend an angle which is less than 1 degree, the two straight lines lying in a mutually common vertical plane.
13. An antidazzle headlamp as claimed in claim 1, characterized in that the sum of the radii of curvature of at least one surface element of the surface of a light exit plane (64, 26, 464, 664) in two mutually normal planes is smaller than the sum of the radii of curvature of at least a surface element of the surface of one other light exit plane (74, 84; 274, 284; 474, 484, 674, 684) of the primary lens (50, 250, 450, 650) in two mutually normal planes.
14. An antidazzle headlamp as claimed in claim 1, characterized in that the opening angle of a light bundle (142) in a horizontal direction is greater than in a vertical direction, wherein the opening angle in the vertical direction is equal to or smaller than 10 degrees.
15. An antidazzle headlamp as claimed in claim 1, characterized in that, in operation, the light source (30) does not fully illuminate the light exit plane (64, 74, 84; 264, 274, 284; 464, 474, 484; 664, 674, 684) of the primary lens (50, 250, 450, 650).
16. An antidazzle headlamp as claimed in claim 1, characterized in that, in operation, the light source (30) does not fully illuminate the light exit plane (104, 114, 124; 304, 314, 324; 504, 514, 524) of the secondary lens (90, 290, 490).

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