Light-emitting device
View Patent ↗A light-emitting device includes at least one first light-emitting semiconductor component, which radiates red light during operation, at least one second light-emitting semiconductor component having a wavelength conversion element, and at least one third light-emitting semiconductor component having a wavelength conversion element. The second and third light-emitting semiconductor components each radiate blue primary light and converted secondary light and the respective superposition of the primary light and the secondary light of the second and third light-emitting semiconductor components has different chromaticity coordinates.
1. A light-emitting device comprising:
a first light-emitting semiconductor component, which emits red light during operation;
a second light-emitting semiconductor component having a wavelength conversion element; and
a third light-emitting semiconductor component having a wavelength conversion element, wherein the second and third light-emitting semiconductor components each emit blue primary light and converted secondary light and wherein a superimposition of the primary light and secondary light of the second light-emitting semiconductor component has a different color locus coordinate than a superimposition of the primary light and secondary light of the third light-emitting semiconductor component.
2. The light-emitting device according to claim 1 , wherein the red light is quasi-monochromatic.
3. The light-emitting device according to claim 1 , wherein the red light has a peak wavelength in a range of greater than or equal to 600 nm and less than or equal to 700 nm.
4. The light-emitting device according to claim 1 , wherein the blue primary light emitted by the second and/or third light-emitting semiconductor component has a peak wavelength that lies in a range of greater than or equal to 430 nm and less than or equal to 480 nm.
5. The light-emitting device according to claim 1 , wherein the second light-emitting semiconductor component emits light having a color locus (cx, cy) where cy≦0.45, and the third light-emitting semiconductor component emits light having a color locus (cx, cy) where cy≧0.37, wherein the color locus coordinate cy of the light emitted by the second light-emitting semiconductor component is less than or equal to the color locus coordinate cy of the light emitted by the third light-emitting semiconductor component.
6. The light-emitting device according to claim 1 , wherein the second light-emitting semiconductor component emits light having a color locus (cx, cy) that lies in a polygonal region in the CIE standard chromaticity diagram with the corners at the color locus coordinates (0.15, 0.25), (0.25, 0.20), (0.40, 0.43) and (0.20, 0.45), and wherein the third light-emitting semiconductor component emits light having a color locus (cx, cy) that lies in a polygonal region in the CIE standard chromaticity diagram with the corners at the color locus coordinates (0.20, 0.40), (0.37, 0.37), (0.52, 0.48) and (0.22, 0.75), wherein the color locus coordinate cy of the light emitted by the second light-emitting semiconductor component is less than or equal to the color locus coordinate cy of the light emitted by the third light-emitting semiconductor component.
7. The light-emitting device according to claim 6 , wherein a superimposition of light emitted by the second and third light-emitting semiconductor components lies in a color locus coordinate range with corner points at the color locus coordinates (0.20, 0.35), (0.30, 0.30), (0.42, 0.52) and (0.25, 0.60).
8. The light-emitting device according to claim 1 , wherein the second light-emitting semiconductor component emits light having a color locus (cx, cy) where 0.20≦cx≦0.31 and 0.1≦cy≦0.32, and wherein the third light-emitting semiconductor component emits light having a color locus (cx, cy) where 0.35≦cx≦0.45 and 0.44≦cy≦0.61 hold true.
9. The light-emitting device according to claim 1 , wherein the first, second and third light-emitting semiconductor components are arranged on a common carrier.
10. The light-emitting device according to claim 9 , wherein the first, second and third light-emitting semiconductor components are arranged in a common housing.
11. The light-emitting device according to claim 1 , wherein the light-emitting semiconductor components are arranged on separate carriers.
12. The light-emitting device according to claim 11 , wherein the light-emitting semiconductor components are arranged in separate housings.
13. The light-emitting device according to claim 1 , further comprising a current-regulating component configured to regulate operating currents of the first, second and third light-emitting semiconductor components in such a way that a mixed light emitted by the light-emitting device is regulatable along a white curve of a Planckian black-body radiator at least in a color temperature range having a magnitude of greater than or equal to 500 K.
14. The light-emitting device according to claim 13 , wherein the color temperature range is greater than or equal to 2400 K and less than or equal to 6500 K.
15. The light-emitting device according to claim 1 , wherein the light-emitting device comprises a plurality of first light-emitting semiconductor components, a plurality of second light-emitting semiconductor components and a plurality of third light-emitting semiconductor components.
16. A light-emitting device comprising:
a first light-emitting semiconductor component, which emits red light during operation,
a second light-emitting semiconductor component having a wavelength conversion element; and
a third light-emitting semiconductor component having a wavelength conversion element;
wherein the second and third light-emitting semiconductor components each emit blue primary light and converted secondary light;
wherein the blue primary light emitted by the second light-emitting semiconductor component has a peak wavelength that lies in a range of greater than or equal to 430 nm and less than or equal to 480 nm;
wherein the blue primary light emitted by the third light-emitting semiconductor component has a peak wavelength that lies in a range of greater than or equal to 430 nm and less than or equal to 480 nm;
wherein a superimposition of the primary light and secondary light of the second light-emitting semiconductor component has different color locus coordinate than a superimposition of the primary light and secondary light of the third light-emitting semiconductor component;
wherein the second light-emitting semiconductor component emits light having a color locus (cx, cy) for which 0.20≦cx≦0.31 and 0.1≦cy≦0.32 hold true; and
wherein the third light-emitting semiconductor component emits light having a color locus (cx, cy) for which 0.35≦cx≦0.45 and 0.44≦cy≦0.61 hold true.
17. The light-emitting device of claim 16 , wherein the blue primary light emitted by the second light-emitting semiconductor component has a peak wavelength that lies in a range of greater than or equal to 445 nm and less than or equal to 470 nm; and
wherein the blue primary light emitted by the third light-emitting semiconductor component has a peak wavelength that lies in a range of greater than or equal to 445 nm and less than or equal to 470 nm.