Hella Gmbh & Co Kgaa

Hella Kgaa

Hella Kgaa Hueck and Company

Gerhard Kloos

Benjamin Willeke

Philip Stroop

Carmen Bungenstock

Rimma Zhytnytska

Mathias Drueppel

Alfons Puls

Karsten Eichhorn

The invention relates to a headlamp for vehicles with a light source for emitting a light beam and with an optical unit containing a projection lens which deflects a first part of the light beam for generation of a light distribution with a light/dark boundary. A second part of the light beam emitted by the light source is guided in an area above the light/dark boundary of the light distribution for detection of high-mounted traffic signs. The projection lens is configured as a Fresnel lens which comprises arch-shaped first usable edges in an upper half space and in a lower half space for deflection of the first part of the light beam, and which comprises a number of arch-shaped second usable edges exclusively in the upper half space for passage of the second part of the light beam therethrough.

Headlamp for vehicles

A headlamp includes adjacent light sources. A collimator contains adjacent collimating lenses, each with an entry and an exit surface. A secondary optical element has at least one transparent substrate with an entry and an exit surface. Two sections are adjacent to one another on the substrate. An array of cylindrical lenses is placed in a first section, and there is no array of cylindrical lenses in a second section. The light emitted from one light source to pass successively through the entry and exit surfaces of one of the collimating lenses and then through one of the sections of the secondary optical element. An array of refractive structures is placed in the second section, each of which contains a prism on the entry and exit surfaces. The refractive structures cause the light exiting the collimator to pass successively through both prisms of one of the refractive structures.

Headlamp for a motor vehicle

A Fresnel projection lens for a headlight of a motor vehicle having a light entry surface, wherein the light entry surface has a smooth or substantially smooth surface, and with a light exit surface. The light exit surface has a plurality of adjacent, in particular annular, flanks, wherein one flank each comprises a bottom, an effective facet, and an interfering facet arranged at a first pitch angle to the effective facet. The effective facet and the interfering facet form a cut edge opposite the bottom. A pass-through area is provided on at least one of the flanks, wherein the pass-through area is angled to the effective facet.

Fresnel projection lens with integrated function for satisfying overhead sign values

A lighting device having a light source, an optical element associated with the light source and designed as a reflection lens which, in a central region accommodating an optical axis of the optical element, has a lens section which has a first coupling-in surface on a coupling-in side and a first coupling-out surface on a coupling-out side. The light source is tilted and/or is arranged rotated about the optical axis in the plane running perpendicular to the optical axis, with the formation of an obliquely running edge of the light source, and the first coupling-in surface, the second coupling-in surface, the reflection surface, the first coupling-out surface, and/or the second coupling-out surface of the optical element are shaped in such a way that the predetermined light distribution is produced with imaging of the edge of the light source as a cut-off line.

Lighting device for vehicles

The invention relates to headlamps for vehicles comprising a number of semiconductor-based light sources being arranged on a substrate, and comprising an optical unit having at least one lens with a lens face for the generation of a given light distribution, wherein the lens face can be calculated by means of a lens equation, which is formed by means of a conic section equation completed by a deformation parameter, so that the lens face is determined with a deviation from a conic section shape, wherein a first deformation parameter for the change of the lens face according to differing degrees of shape change in the direction of the optical axis and vertically to the optical axis are given on one hand and that a second deformation parameter for the change of the lens face according to identical degrees of shape change in the direction of the optical axis and vertically to the optical axis are given on the other hand.

A headlight for vehicles with a plurality of LED light sources that are arranged in a matrix in an LED array, each emitting a partial light beam that falls on an optical unit, located in the front, in the main beam direction in order to image light spots that combine to form a predetermined light distribution, whereby the optical unit comprises a first lens element and a rotationally symmetrically arranged second lens element, by means of which the partial light beams are transformed so that imaged light spots that are adjacent in the light distribution are directly adjacent or overlap, wherein the first lens element () is shaped in such a way that light spots of the light distribution in the vertical direction have a greater separation than in the horizontal direction.

Headlights for vehicles

A lighting device for vehicles with a plurality of light sources arranged like a matrix in a light generation level, with one light forming optic unit being arranged in the primary direction of emission in front of the light source, and with a pre-optic unit arranged between the light forming optic unit and the light sources, comprising a plurality of pre-optic elements, characterized in that the pre-optic elements are embodied as planar band elements provided with reflective flat sides and that the plurality of pre-optic elements form a band grid with a plurality of recesses, each allocated to the light sources.

A lighting device for vehicles with a number of light sources and with an optic unit to generate a predetermined light distribution, with the optic unit comprising at least one optic area, held via holding means in a predetermined assembly position, with a transparent substrate being provided with a plurality of grooves as fastening means so that an edge of the optic area can be framed in the groove.

Projection headlights for vehicles with a reflector, with a light source assigned to the reflector, with a lens arranged in the main direction of the beam in front of the reflector and with a screen arranged in the region of the focal point of the lens, said screen being arranged between the light source and the lens and comprising an elongated screen edge surface having a contour on an upper edge in order to form a light/dark boundary of a light distribution arrangement, wherein the elongated screen edge surface comprises a light beam reduction section in a middle area, so that at least part of the light beam emitted from the light source and hitting the light beam reduction section is not further reflected in the main direction of the beam, wherein the light beam reduction section is designed as a recess.

Projection headlight with recessed light beam producing section

A lighting device for vehicles with a plurality of light sources arranged like a matrix in a light generation level, with a light forming optic unit arranged in front of the light sources in a primary direction of emission, and with another optic unit arranged between the light forming optic unit and the light sources, comprising a plurality of optic elements, with the optic elements being arranged like a matrix and one optic element each being allocated to a light source, with the additional optic unit being embodied as a widening optic unit with a plurality of band reflector segments arranged intersecting to form polygonal reflectors as optic elements and with a plurality of light forming elements, which are arranged like a matrix corresponding to the light sources and arranged between the light sources and the polygonal reflectors.

Lighting device

A transformation optic arrangement for vehicles to convert a planar light distribution into an angular light distribution with a plurality of light sources arranged in one level like a matrix to generate the planar light distribution and with an optic unit arranged in front of the light sources in a primary direction of emission to deflect the light, with the optic unit comprising at least one first lens, with at least one additional lens being provided between the first lens and the light sources, arranged coaxially in reference to the z-axis extending in the primary direction of emission and distanced from the first lens, and that the first lens and at least one additional lens each show non-spherically shaped coupling surfaces and decoupling surfaces as flat sides.

Growing community of inventors

Erwitte, Germany

Gerhard Kloos