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Luminous device and method for driving a luminous device

A technology for light-emitting devices and light-emitting materials, which is applied to optical components for changing the spectral characteristics of emitted light, components of lighting devices, semiconductor devices of light-emitting components, etc., can solve problems such as high cost, and achieve simple color change, Eliminates the effect of temperature correction

Inactive Publication Date: 2012-01-11
OSRAM GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the determination of the color change and its correction currently require expensive sensors and subsequent electronics

Method used

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  • Luminous device and method for driving a luminous device
  • Luminous device and method for driving a luminous device
  • Luminous device and method for driving a luminous device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0080] figure 1 In a side view, a part of the luminous device 1 is shown partly as a sectional view, namely an electrically insulating insulator layer 2 , on the front side of which a plurality of heating elements or spreading surfaces 3 arranged in a row are applied. The soaking surfaces 3 here consist of metal layers and are not electrically connected to one another, but are electrically insulated from one another by the insulating layer 2 . Semiconductor light sources in the form of light-emitting diodes 4 are present on the front side of each soaking surface 3 . The light-emitting diodes 4 are designed here by way of example as blue-emitting LED chips. Each light-emitting diode 4 is covered by a transparent potting compound 5 , in which a phosphor 6 is present which can convert or convert the blue light emitted by the associated LED 4 into yellow light. Depending on the density of the phosphor 6 and the thickness of the potting compound 5 , the proportion of the waveleng...

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PUM

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Abstract

The invention provides a luminous device and a method for driving a luminous device. The luminous device (41) includes a plurality of semiconductor light sources (42) and at least one light-transmissive converter element (43) including a wavelength-converting phosphor (12) sensitive to the light emitted by the semiconductor light source, wherein the semiconductor light source can be at least partly covered by the converter element, and the converter element is movable such that a proportion of a light wavelength-converted by means of the converter element is adjustable depending on a position of the converter element, and the uminous device (41) is also provided with at least one adjusting unit performing adjustment related to working parameters and used for making the converter element move. The method is used for driving the luminous device (41) with at least one semiconductor light source (42), wherein the at least one light-transmissive converter element (43) makes working-parameter-related color change and / or strength change of the luminous device (41) be at least partly compensated according to working parameter movement of the at least one semiconductor light source (and / or the phosphor (12)).

Description

technical field [0001] The invention relates to a lighting device with at least one semiconductor light source. Furthermore, the invention relates to a method for operating a lighting device with at least one semiconductor light source. Background technique [0002] Hitherto, LED illuminants have been constructed with a focus on high luminous density and high thermal conductivity, more precisely, driven especially by projector applications which require a high luminous density to be as concentrated as possible in a spatial point. In the case of projector applications, the centralized cooling body can be actively cooled, for example by means of a fan airflow, without problems. Usually a particularly complex switching power supply is used as the ballast, which is adapted to the low voltage of the LED and is also designed to be isolated from the mains, so that the electrodes of the LED can be designed as heat sinks. [0003] Hitherto, the light color of LED lamps with LEDs of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/075H01L33/48H01L33/50F21V9/10F21Y101/02F21V9/40
CPCH01L33/507F21S10/02F21V14/08F21V9/10H01L33/508F21Y2101/025F21Y2101/02F21V9/16F21Y2103/003F21V17/02H01L2224/48091H01L2224/48472H01L2224/8592H01L2224/48465F21Y2115/30F21Y2103/10F21Y2115/10F21V13/14F21V9/32F21V9/45H01L2924/00014H01L2924/00
Inventor 马丁·默克雷蒙德·奥伯施米德
Owner OSRAM GMBH
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