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Lighting modules that emit mixed light

A technology of light-emitting modules and mixed light, applied in electroluminescent light sources, semiconductor devices of light-emitting elements, light sources, etc., can solve the problem that the chromaticity coordinate temperature correlation is difficult to be stabilized, and achieve the effect of improving light output and improving efficiency.

Active Publication Date: 2016-03-02
OSRAM OPTO SEMICONDUCTORS GMBH & CO OHG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The different temperature and aging characteristics of the LEDs emitting red and green-white light are problematic during the operation of the lighting device, which leads to difficulties in stabilizing the chromaticity coordinates of the lighting device due to temperature dependence

Method used

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  • Lighting modules that emit mixed light
  • Lighting modules that emit mixed light
  • Lighting modules that emit mixed light

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] Elements that are identical, of the same type or perform the same function are provided with the same reference symbols in the figures.

[0050] exist figure 1 The equivalent circuit diagram of the first embodiment of the lighting module 1 according to the present application is shown in .

[0051] The light emitting module 1 includes a plurality of first semiconductor devices 2 , a plurality of second semiconductor devices 3 and a plurality of third semiconductor devices 4 .

[0052] All first semiconductor components 2 are arranged within the first branch 20 and form a series circuit. Furthermore, all second semiconductor components 3 are arranged within the second branch 30 and form a series circuit. Furthermore, all third semiconductor components 4 are arranged within the third branch 40 and form a series circuit. Dashed lines symbolically represent possible other semiconductor devices. The three branches 20, 30, 40 are connected in parallel with each other.

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Abstract

A light emitting module for emitting mixed light is proposed, the light emitting module comprising: at least one first semiconductor device emitting unconverted red light; at least one second semiconductor device, the second semiconductor device a device emitting green-white light converted at a first conversion ratio; at least one third semiconductor device emitting green-white light converted at a second conversion ratio, the second conversion ratio being smaller than the first conversion ratio; At least one resistive element having a temperature-dependent resistance, wherein the second semiconductor component is connected in parallel with the third semiconductor component.

Description

technical field [0001] A luminous module for emitting mixed light is proposed, which has a plurality of semiconductor components which emit light of different wavelengths. In particular, the luminous module generates white light during operation. Background technique [0002] A lighting device emitting white light can be realized, for example, by combining one or more red-emitting LEDs with one or more so-called conversion LEDs that generate blue light, which is converted in a conversion layer into light with a different wavelength, For example conversion to green and white light. The corresponding operating currents of the LEDs used are adjusted such that the superposition of the light emitted by all LEDs results in white light on the white curve of the Planckian blackbody radiation source. [0003] The different temperature and aging characteristics of the red- and green-white-emitting LEDs are problematic during the operation of the lighting device, which makes it diffi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/28H05B45/18H01L27/156F21Y2115/10H01L25/167H01L27/0248H01L33/30H01L33/32H01L33/502H01L33/56
Inventor 克里斯蒂安·盖特纳阿莱斯·马尔基坦扬·马费尔德
Owner OSRAM OPTO SEMICONDUCTORS GMBH & CO OHG
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