Abstract: A lighting device (100), comprising: a ring-shaped first carrier (1) having at least one first light source (11) on the first carrier (1) and a ring-shaped first light emission area (12) disposed downstream of the first light source; (11), and a second carrier (2) having at least one second light source (21), having at least one third light source (31), having a second light emission area (22) disposed downstream of the second light source (21) and having a third light emission area (32) disposed downstream of the third light source (31), wherein, via the second and third light emission areas (22, 32), light is emitted in respectively opposite emission directions (20, 30), and wherein the second carrier (2) is arranged within the ring-shaped first carrier (1) and the first and second carriers (1, 2) are mounted rotatably relative to one another about a rotation axis (3) wherein the rotation axis (3) extends along a diameter of the ring-shaped first carrier (1).

Abstract: An illumination device includes a number of radiation reflectors that are each irradiated by at least one light source. The radiation reflectors are shaped in such a way that they can be combined modularly to form a radiation-reflecting luminous area.

Abstract: A luminous means (1) is specified, comprising a heat sink (2), which comprises a top surface (21) and a bottom surface (22), and also two sections (23), wherein the two sections (23) are arranged one above the other, and each of the sections (23) has a side surface (231) which runs transversely with respect to the top surface (21) and bottom surface (22) of the heat sink (2) and at which at least one light-emitting diode (3) is arranged.

Abstract: A lighting device (100), comprising: a ring-shaped first carrier (1) having at least one first light source (11) on the first carrier (1) and a ring-shaped first light emission area (12) disposed downstream of the first light source; (11), and a second carrier (2) having at least one second light source (21), having at least one third light source (31), having a second light emission area (22) disposed downstream of the second light source (21) and having a third light emission area (32) disposed downstream of the third light source (31), wherein, via the second and third light emission areas (22, 32), light is emitted in respectively opposite emission directions (20, 30), and wherein the second carrier (2) is arranged within the ring-shaped first carrier (1) and the first and second carriers (1, 2) are mounted rotatably relative to one another about a rotation axis (3) wherein the rotation axis (3) extends along a diameter of the ring-shaped first carrier (1)

Abstract: An LED semiconductor body includes a number of at least two radiation-generating active layers. Each active layer has a forward voltage, wherein the number of active layers is adapted to an operating voltage in such a way that the voltage dropped across a series resistor connected in series with the active layers is at most of the same magnitude as a voltage dropped across the LED semiconductor body. The invention furthermore describes various uses of the LED semiconductor body.

Abstract: An LED semiconductor body includes a number of at least two radiation-generating active layers. Each active layer has a forward voltage, wherein the number of active layers is adapted to an operating voltage in such a way that the voltage dropped across a series resistor connected in series with the active layers is at most of the same magnitude as a voltage dropped across the LED semiconductor body. The invention furthermore describes various uses of the LED semiconductor body.

Abstract: A luminous means (1) is specified, comprising a heat sink (2), which comprises a top surface (21) and a bottom surface (22), and also two sections (23), wherein the two sections (23) are arranged one above the other, and each of the sections (23) has a side surface (231) which runs transversely with respect to the top surface (21) and bottom surface (22) of the heat sink (2) and at which at least one light-emitting diode (3) is arranged.

Abstract: An LED semiconductor body includes a number of at least two radiation-generating active layers. Each active layer has a forward voltage, wherein the number of active layers is adapted to an operating voltage in such a way that the voltage dropped across a series resistor connected in series with the active layers is at most of the same magnitude as a voltage dropped across the LED semiconductor body. The invention furthermore describes various uses of the LED semiconductor body.

Abstract: A lighting apparatus comprising a plurality of light modules is specified, wherein each light module includes a plurality of groups of light sources mounted on a circuit board of said light module, and said light modules are arranged in rows on a carrier of said lighting apparatus. A display device comprising such a lighting apparatus is also specified.

Abstract: An illumination device includes a number of radiation reflectors that are each irradiated by at least one light source. The radiation reflectors are shaped in such a way that they can be combined modularly to form a radiation-reflecting luminous area.

Abstract: A lighting apparatus comprising a plurality of light modules is specified, wherein each light module includes a plurality of groups of light sources mounted on a circuit board of said light module, and said light modules are arranged in rows on a carrier of said lighting apparatus. A display device comprising such a lighting apparatus is also specified.