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Lighting device with light source and spaced-apart illuminants

A technology for lighting devices and illuminants, applied to lighting devices, components of lighting devices, optical elements used to change the spectral characteristics of emitted light, etc., can solve problems such as eyes and skin glare, damage, high radiation intensity, etc.

Active Publication Date: 2019-12-06
OSRAM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This concentrated light beam can have such a high radiation intensity that it can in some cases cause severe glare or damage, in particular to the eyes and the skin, when a person looks at the headlights.

Method used

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  • Lighting device with light source and spaced-apart illuminants
  • Lighting device with light source and spaced-apart illuminants
  • Lighting device with light source and spaced-apart illuminants

Examples

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Embodiment Construction

[0054] figure 1 A lighting device in the form of a vehicle headlight 1 is shown, which has a light source in the form of a laser 2 , which emits a blue primary light beam P perpendicularly to a thin, disk-shaped light body 3 spaced apart from the on, for example a luminescent material layer or a ceramic luminescent material sheet. Laser 2 can be realized, for example, as a laser diode. A phosphor is present in the light body 3 in order to at least partially wavelength-convert the blue primary light beam P into the yellow secondary light beam S. FIG. As a result, converted light rays Ps, S in the form of white or blue-yellow mixed light can emerge from the illuminant 3 as a superposition of the secondary ray S and the possibly scattered primary ray Ps passing through the illuminant 3 . The converted light rays Ps, S are scattered relatively broadly.

[0055] The laser 2 and the illuminant 3 are embodied in a light-transmitting arrangement, wherein the primary light beam Ps, ...

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PUM

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Abstract

The invention relates to a lighting device (1) having at least one light source (2), in particular a semiconductor light source, for emitting a primary light beam (P) onto at least one spaced-apart illuminant (3), wherein the The illuminant (3) has at least one hole (4) and the direct light component (Pt) of the corresponding primary light beam (P) can pass through the at least one hole (4). A vehicle headlight (1) has at least one lighting device.

Description

technical field [0001] The invention relates to a lighting device having at least one light source, in particular a semiconductor light source, for emitting a primary light beam onto at least one spaced-apart illuminant. The invention also relates to a vehicle headlight having at least one such lighting device. The invention also relates to a vehicle having at least one such vehicle headlight. Vehicles of this type are essentially unlimited and may include air, water and / or land vehicles, especially motor vehicles, especially motorcycles, passenger cars or trucks. The invention can be used in particular for motor vehicle headlights. The invention is especially applicable to light sources in the form of lasers, especially semiconductor lasers. The invention is particularly applicable to LARP headlights. Background technique [0002] So-called LARP (Laser Remotely Excited Phosphor) headlights are known, in which primary light emitted by at least one laser light source impi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21K9/64F21S41/125F21S41/14F21S41/147F21S41/16F21S41/20F21S41/30F21S41/32F21S41/33F21S41/37F21S41/40F21S45/47F21S45/70F21V9/30F21V13/02H01S5/00F21W107/10F21Y115/10F21Y115/30F21V9/40
CPCF21V7/04F21V13/02F21K9/64F21Y2115/10F21Y2115/30F21S41/125F21S41/16F21S41/176F21S41/321F21S41/322F21S41/338F21S41/40F21S45/47F21S45/70F21W2107/10F21V9/30H01S5/0071H01S5/32341H01S5/0087F21S41/20F21S41/30F21S41/37
Inventor 于尔根·哈格尔斯特凡·施魏格尔奥利弗·黑林
Owner OSRAM GMBH
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