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Lighting device for a motor vehicle headlight

A technology for light-emitting devices and motor vehicles, which is applied in the direction of headlights, signal devices, optics, etc., and can solve the problems of non-uniformity system, inefficiency, etc.

Active Publication Date: 2019-10-11
ZKW GRP GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lens cutout can reach such an extent that the light emitted by the upstream light guide unit can no longer be imaged completely through the lens and the remaining light that hits the lens cutout has to be reflected, for example, in the vehicle headlights. are absorbed within, whereby inhomogeneities often appear in the light pattern and the system becomes inefficient

Method used

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  • Lighting device for a motor vehicle headlight
  • Lighting device for a motor vehicle headlight
  • Lighting device for a motor vehicle headlight

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Experimental program
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Embodiment Construction

[0041] In the following figures, the same reference numerals denote the same features unless otherwise stated.

[0042] figure 1 A lighting device 1 according to the prior art is shown, a perspective illustration. The lighting device 1 comprises a plurality of light sources 2, the light sources being figure 2 shown in figure 2 show the basis figure 1 A cross-sectional illustration of the light-emitting device 1 . Furthermore, the lighting device 1 comprises a light-guiding unit 3 formed from a light-conducting solid body, which has a plurality of light-guiding parts 3b. Such a light guide unit 3 is known, for example, from AT513341A1. The lighting device 1 further comprises a projection lens 4 , which has an optical axis X, wherein the light guide 3 b is guided together towards the common light exit surface 3 a of the light guide unit 3 . The light exit surface 3 a is designed for emitting light into the projection lens 4 and lies substantially in the focal plane of ...

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PUM

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Abstract

The invention relates to a lighting device (1) for a motor vehicle headlight, comprising a plurality of light sources, a light guide unit (3) made of a light-guiding solid body which has a plurality of light guides (3b), and a projection lens (4) which has a focal plane (E) and is arranged downstream of the solid body, wherein each light guide (3b) has a light in-coupling surface (3b') for coupling light of a light source (2) into the light guide (3b), and the light guides (3b) merge in order to form a common light out-coupling surface (3a) of the light guide unit (3). The light out-coupling surface (3a) is designed to emit light into the projection lens (4) and lies substantially on the focal plane (E) of the projection lens (4). The invention is characterized in that the light guide unit(3) has at least one translucent deflection element (6) which extends along the light out-coupling surface (3a) in a ribbed manner and projects beyond the light out-coupling surface (3a) in the direction of the projection lens (4) or is formed as a depression within the light out-coupling surface (3a) opposite said direction. The deflection element (6) is designed to deflect light entering the deflection element (6) from the light out-coupling surface (3a) at least partly in the direction of the projection lens (4).

Description

technical field [0001] The invention relates to a lighting device for a motor vehicle headlight, comprising a plurality of light sources, a light-guiding unit made of a light-conducting solid body, having a plurality of light-guiding parts, and a rear projection with a focal plane (Brennebene) lens, wherein each light guiding part has a light incident surface for injecting light from the light source into the light guiding part, wherein the light guiding parts are guided together towards a common light exit surface of the light guiding unit, wherein the light The exit surface is designed for emitting light into the projection lens and lies substantially in the focal plane of the projection lens. [0002] Furthermore, the invention relates to a vehicle headlight with a lighting device according to the invention and a motor vehicle with a lighting device according to the invention and / or a vehicle headlight according to the invention. Background technique [0003] A lighting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S43/241F21S43/249F21S43/14F21S41/24F21S41/143G02B6/00
CPCG02B6/0036F21S41/143F21S41/24F21S41/255G02B6/0046G02B6/0075F21S41/172F21S41/141F21S41/337F21S41/25F21S41/151
Inventor J.普兰克L.陶特N.温特雷尔
Owner ZKW GRP GMBH