Light-emitting component, lamp and use of a lamp and a light-emitting component

Patent metadata

Field	Value
Publication number	US-11334098-B2
Application number	US-201816636589-A
Country	US
Kind code	B2
Filing date	Jul 11, 2018
Priority date	Aug 11, 2017
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

A light-emitting component is disclosed. In an embodiment a light-emitting component includes at least four light sources configured to emit light of different wavelength ranges in pairs and a control device configured to operate the light sources independently of one another in such a way that light from at least two of the light sources is mixed to form a mixed light and adjust an mv,mel,D65 value of the mixed light, wherein the at least four light sources include a first light source configured to emit electromagnetic radiation with a dominant wavelength of at most 450 nm, a second light source configured to emit electromagnetic radiation with a dominant wavelength of at least 480 nm and at most 520 nm or a dominant wavelength of at least 455 nm and at most 470 nm, a third light source configured to emit electromagnetic radiation in a spectral range of green light, and a fourth light source configured to emit electromagnetic radiation in a spectral range of yellow and/or amber light.

First claim

The invention claimed is:

1. A light-emitting component comprising:
at least four light sources configured to emit light of different wavelength ranges in pairs; and
a control device configured to:
operate the light sources independently of one another in such a way that light from at least two of the light sources is mixed to form a mixed light; and
adjust an m v,mel,D65 value of the mixed light,

wherein the at least four light sources comprise a first light source configured to emit electromagnetic radiation with a dominant wavelength of at most 450 nm, a second light source configured to emit electromagnetic radiation with a dominant wavelength of at least 480 nm and at most 520 nm or a dominant wavelength of at least 455 nm and at most 470 nm, a third light source configured to emit electromagnetic radiation in a spectral range of green light, and a fourth light source configured to emit electromagnetic radiation in a spectral range of yellow and/or amber light.

2. The light-emitting component according to claim 1 , wherein the control device is configured to vary the m v,mel,D65 value of the mixed light in a predefinable range, wherein a color temperature of the mixed light at different m v,mel,D65 values from the predefinable range varies by at most 20% about an average value.

3. The light-emitting component according to claim 1 , wherein, in order to produce mixed light with a higher m v,mel,D65 value, the first light source is operated with a lower power in comparison to the second light source than for a lower m v,mel,D65 value.

4. The light-emitting component according to claim 3 , wherein the first light source is not operated and the second light source is operated in order to produce mixed light with the higher m v,mel,D65 value, and the second light source is not operated and the first light source is operated in order to produce mixed light with the lower m v,mel,D65 value.

5. The light-emitting component according to claim 1 , wherein, in order to produce mixed light with a higher m v,mel,D65 value, the third light source is operated with a lower power in comparison to the second light source than for a lower m v,mel,D65 value.

6. The light-emitting component according to claim 5 , wherein the third light source is not operated and the second light source is operated in order to produce mixed light with the higher m v,mel,D65 value, and the second light source is not operated and the third light source is operated in order to produce mixed light with the lower m v,mel,D65 value.

7. The light-emitting component according to claim 1 , wherein a luminous flux of the mixed light is at least 500 lm.

8. A lamp comprising:
at least one light-emitting component according to claim 1 ,
wherein the lamp is configured to emit light having a luminous flux of at least 500 lm.

9. The lamp according to claim 8 , wherein the lamp is configured for general lighting or for lighting the interior of a means of transport.

10. The lamp according to claim 9 , wherein the means of transport is a motor vehicle, a bus, a railway wagon, an aircraft, a boat, a submarine, or a helicopter.

11. A light-emitting component comprising:
at least four light sources configured to emit light of different wavelength ranges in pairs; and
a control device configured to:
operate the light sources independently of one another in such a way that the light from at least two of the light sources is mixed to form a mixed light;
adjust an m v,mel,D65 value of the mixed light; and
vary the m v,mel,D65 value of the mixed light in a predefinable range,
wherein a color temperature of the mixed light at different m v,mel,D65 values from the predefinable range varies by at most 20% about an average value.

Assignees

• Osram Oled Gmbh

Inventors

• Stigler Sebastian
• Hiller Uli
• Moritz Martin

Classifications

• G05D25/02 Primary

  characterised by the use of electric means · CPC title

• B60Q3/43

  General lighting · CPC title

• H05B45/20 Primary

  Controlling the colour of the light · CPC title

• B60Q3/74

  for overall compartment lighting; for overall compartment lighting in combination with specific lighting, e.g. room lamps with reading lamps (general lighting mounted on specific fittings B60Q3/20; general lighting for mass transit vehicles B60Q3/43) · CPC title