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Headlamp for vehicles

A technology for headlamps and vehicles, applied in the field of headlamps

Active Publication Date: 2015-06-24
海拉有限双合股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If several so-called LED chips have to be imaged by means of a single lens in order to achieve a compact construction, the problem arises that, due to the construction of the LED chips on a common carrier, the group distance between the LED chips is greater than The distance between adjacent LED light sources in the LED chip

Method used

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  • Headlamp for vehicles
  • Headlamp for vehicles

Examples

Experimental program
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Embodiment Construction

[0020] The vehicle headlight according to the invention can be used to generate a low beam or high beam function and, for example, to generate a turn signal or marker light function. The headlight essentially comprises a semiconductor-based light source arrangement 1 and an optical unit 2 arranged in front of the light source arrangement 1 in the main direction of illumination H.

[0021] Optical unit 2 may comprise a single lens. Alternatively, the optical unit 2 can also comprise a plurality of lenses, which are arranged one behind the other in the main direction of illumination H.

[0022] The light source device 1 includes a plurality of light source groups 3, figure 1 Only two groups of them are shown as examples. The light source groups 3 are each designed as a chip in which a plurality of LED light sources 4 are arranged in a matrix, ie in rows and columns, with the same distance a between adjacent LED light sources 4 . The distance a can be regarded as a pixel dista...

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Abstract

A headlamp for vehicles with a semiconductor-based light source arrangement including a number of chips with a matrix-type arrangement of the light sources for the forming of a light source group. Neighboring light sources have an equidistant distance relative to one another. The headlamp also includes an optics unit for the projection of the light sources to form a given light distribution. At least two light source groups are arranged on a common carrier, and a group distance between neighboring light source groups is larger than the distance between the neighboring light sources of the respective light source groups. The light source groups are assigned a common optics unit, and the optics unit being configured so that border light sources of neighboring light sources groups arranged on edges of the respective neighboring light source groups and facing one another are projected to form overlapping light spots. The border light sources are dimmed down so that the overlapping light spots have an illuminance lying within a desired value deviation of the illuminance of the neighboring light spots. The neighboring light spots being projected by depiction of the light sources are situated next to the border light sources of the respective light source groups.

Description

technical field [0001] The present invention relates to a headlamp for vehicles, which includes: a semiconductor-based light source device, the light source device includes a certain number of chips, each of which has a matrix-like distribution of light sources for forming a light source group, relatively Adjacent light sources have the same distance from each other; the headlight also includes an optical unit arranged in front of the light source device along the main illumination direction for forming the light source to form a predetermined light distribution. Background technique [0002] A headlight for vehicles is known from DE 10 2005 041 234 A1, which comprises a semiconductor-based light source arrangement and an optical unit arranged in front of the light source arrangement. The light source device includes two light source groups, each of which has a plurality of light sources arranged in a matrix on a common chip. The groups of light sources are separated in pos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/12F21W101/10
CPCF21S41/25F21S41/143F21S41/155F21S41/19F21Y2115/10F21W2102/20F21S41/153F21W2102/00
Inventor I·默勒W·波尔曼T·菲尔埃格
Owner 海拉有限双合股份公司
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