AMBIENT LIGHT DETECTION BY MEANS OF TWO LIGHT SENSORS ARRANGED WITHIN A LUMINAIRE

Abstract

The present invention relates to a luminaire (1), comprising a housing (2) having a diffusion panel (3) as light emission surface, comprising at least one illuminant (4) which is arranged within the housing (2) such that it is set up to emit light through the diffusion panel (3) to the area outside of the housing (2), and comprising at least two light sensors (S1, S2) arranged within the housing (2), the light sensors being set up to detect light. The at least two light sensors (S1, S2) have different detection regions (B1, B2) within the housing (2) and are set up to detect light (E.sub.t) which enters through the diffusion panel (3) into the housing interior from the area outside of the housing (2), wherein, on account of the different detection regions (B1, B2), one of the at least two light sensors (S1, S2) detects light (E.sub.r2) that was emitted by the at least one illuminant (4) and reflected from at least one wall of the housing interior. The invention further relates to a lighting system having at least one such luminaire and to a method for detecting the ambient light of such a luminaire.

Claims

1. A luminaire (1) comprising: a housing (2) having a diffusion panel (3) as a light emission surface, at least one illuminant (4) which is arranged within the housing (2) such that it is set up to emit light through the diffusion panel (3) to the area outside of the housing (2), and comprising at least two light sensors (S1, S2) arranged within the housing (2), the light sensors being set up to detect light, wherein the at least two light sensors (S1, S2) have different detection regions (B1, B2) and are set up to detect incident light (E.sub.t), and at least the detection region of a first light sensor (S1) of the at least two light sensors (S1, S2) is such that light (E.sub.r2) emitted by the at least one illuminant (4) and reflected from at least one wall of the housing interior is detected.

2. The luminaire (1) according to claim 1, wherein the detection region of the second light sensor (S2) of the at least two light sensors (S1, S2) is such that exclusively light from the region of the diffusion panel (3) is detected by the second light sensor.

3. The luminaire (1) according to claim 1, wherein the at least two light sensors (S1, S2) are arranged within the housing such that they have the different detection regions (B1, B2).

4. The luminaire (1) according to claim 1, wherein at least one light sensor of the at least two light sensors (S1, S2) comprises a mechanical and/or optical device which is set up to change, in particular to enlarge and/or reduce, the detection region of the at least one light sensor, so that the at least two light sensors (S1, S2) have the different detection regions (B1, B2).

5. The luminaire (1) according to claim 1, wherein the at least one illuminant (4) and the at least two light sensors (S1, S2) are arranged on a surface (5), in particular on a printed circuit board.

6. The luminaire (1) according to claim 1, further comprising: a processing device (6), wherein the processing device (6) is set up to determine the ambient light of the luminaire (1) on the basis of detection values detected by the at least two light sensors (S1, S2).

7. The luminaire (1) according to claim 6, wherein the processing device (6) is set up to determine the light emitted by the one illuminant (4) on the basis of detection values detected by the at least one first light sensor (S1) in order to determine the ambient light of the luminaire (1).

8. The luminaire (1) according to claim 7, wherein the processing device (6) is set up to determine the ambient light of the luminaire (1) on the basis of the detection values detected by the at least one second light sensor (S2) and of the determined light emitted by the one illuminant.

9. The luminaire (1) according to claim 6, wherein the processing device (6) is set up to determine the ambient light of the luminaire (1) using mathematical models and/or comparative measurements of known light situations of the surroundings of the luminaire (1).

10. The luminaire (1) according to claim 6, wherein the processing device (6) is set up to control the light emission of the at least one illuminant (4) on the basis of the detection values.

11. A lighting system (8) comprising: at least one luminaire (1) according to claim 6.

12. A method for detecting the ambient light of a luminaire (1) according to claim 1, comprising the following method steps: detecting, by means of the at least two light sensors (S1, S2) of the luminaire (1) that have different detection regions (B1, B2) within the housing (2), light which enters through the diffusion panel (3) into the housing interior from the area outside of the housing (1), and detecting, by means of at least one first light sensor (S1) of the at least two light sensors (S1, S2), light (E.sub.r2) which is emitted by the at least one illuminant (4) and is reflected from at least one wall of the housing interior.

13. The method according to claim 12, comprising the following further method step: determining, by means of the processing device (6), the ambient light of the luminaire (1) on the basis of detection values detected by the at least two light sensors (S1, S2).

14. The luminaire (1) according to claim 6, wherein the processing device (6) is set up to dim the light emission of the at least one illuminant (4) on the basis of the determined ambient light.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0083] A detailed description of the figures is given below. These show:

[0084] FIG. 1 is a schematic side view of a preferred embodiment of a luminaire according to the invention.

[0085] FIG. 2 is a schematic representation of a further preferred embodiment of a luminaire according to the invention.

[0086] FIG. 3 is a schematic representation of a preferred embodiment of a lighting system according to the invention.

[0087] FIG. 4 is a schematic representation of a further preferred embodiment of a lighting system according to the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0088] Corresponding elements are provided with the same reference signs In FIGS. 1 to 4.

[0089] FIG. 1 shows a schematic side view of a preferred embodiment of a luminaire according to the invention.

[0090] The above description of the luminaire according to one aspect of the present invention is accordingly applicable for the luminaire 1 of FIG. 1.

[0091] The luminaire 1 shown in FIG. 1 comprises a housing 2 (luminaire housing), a diffusion panel 3, four illuminants 4, two light sensors S1 and S2 and a printed circuit board 5.

[0092] As already stated above, the luminaire 1 can also have fewer or more illuminants (at least one illuminant) and more than two light sensors (at least two light sensors), so that the number of illuminants and light sensors of the luminaire 1 of FIG. 1 is merely exemplary and serves to explain a preferred embodiment of a luminaire according to the invention.

[0093] The illuminants 4 and the two light sensors S1 and S2 can be designed as described above with regard to the luminaire according to one aspect of the present invention.

[0094] According to FIG. 1, the four illuminants 4 and the two light sensors S1 and S2 are arranged on the printed circuit board 5 of the luminaire within the housing 2 (luminaire housing) of the luminaire 1. In other words, the four illuminants 4 and the two light sensors S1 and S2 are arranged within the luminaire housing 2. In particular, the illuminants 4 and the light sensors S1 and S2 are arranged next to each other or in a row on the printed circuit board.

[0095] The luminaire 1 comprises the diffusion panel 3 as a light emission surface, so that the light emitted by the illuminants 4 is emitted or radiated through the diffusion panel 3 to the area outside of the housing 2. This then corresponds to the light emission of the luminaire 1. Consequently, the illuminants 4 are arranged in the housing interior 2 of the luminaire 1, in particular on the printed circuit board 5, in such a way that they are set up to emit light through the diffusion panel 3 to the area outside of the housing 2.

[0096] The two light sensors S1 and S2 have different detection regions B1 and B2. These different detection regions B1 and B2 are attained by a different arrangement of the two light sensors S1 and S2 in the housing interior. According to FIG. 1, the two light sensors S1 and S2 also have different detection angles w1 and w2. The different detection regions B1 and B2 are consequently also attained in that at least one of the two light sensors S1 and S2 comprises a mechanical and/or optical device (not shown in FIG. 1) which is set up to change, in particular reduce and/or enlarge, the detection region of the at least one light sensor.

[0097] The mechanical and/or optical device can be designed as described above with regard to the luminaire according to one aspect of the present invention.

[0098] As already stated above, the different detection regions B1 and B2 can also be attained by a different arrangement of the two light sensors S1 and S2 in the housing interior. Preferably, in this case the two light sensors S1 and S2 have the same detection angles w1 and w2. Alternatively or additionally, at least one light sensor of the two light sensors S1 and S2 can comprise a mechanical and/or optical device which is set up to change, in particular to reduce and/or enlarge, the detection region of the at least one light sensor.

[0099] As is shown in FIG. 1, the first light sensor S1 is set up to detect light Ere which is emitted by the illuminants 4 and is reflected from at least one wall of the housing interior of the luminaire 1. In other words, the detection region B1 of the first light sensor S1 is set such that the first light sensor S1 detects light which is emitted by the illuminants 4 and is reflected from at least one wall of the housing interior.

[0100] In particular, the first light sensor S1 is set up to detect light E.sub.t entering or incident through the diffusion panel 3 into the housing interior from the area outside of the housing 2, light E.sub.r1 emitted or radiated by the illuminants 4 and reflected from the diffusion panel 3, and light E.sub.r2 emitted by the illuminants 4 and reflected from at least one wall of the housing interior.

[0101] As shown in FIG. 1, the at least one wall of the housing interior is in particular at least one side wall or lateral wall of the housing interior.

[0102] The light incident on the first light sensor S1 in the detection region B1 of the first light sensor S1 is thus composed of light E.sub.t which enters through the diffusion panel 3 into the housing interior from the area outside of the housing 2; light E.sub.r1 emitted by the illuminants 4 and reflected from the diffusion panel 3, and light E.sub.r2 emitted by the illuminants 4 and reflected from at least one wall of the housing interior.

[0103] The light E.sub.r1 emitted by the illuminants 4 and reflected from the diffusion panel 3 and the light E.sub.r2 emitted by the illuminants 4 and reflected from at least one wall of the housing interior do not contribute to the illumination of the surroundings by the luminaire 1.

[0104] The light E.sub.r1 emitted by the illuminants 4 and reflected from the diffusion panel 3 and the light E.sub.r2 emitted by the illuminants 4 and reflected from at least one wall of the housing interior can also be referred to as diffused light. Consequently, the first light sensor S1 is set up to detect diffused light in the housing interior. In other words, the detection region B1 of the first light sensor S1 is set such that the first light sensor S1 detects diffused light in the housing interior or that diffused light in the housing interior strikes the first light sensor S1 in the detection region B1 of the first light sensor S1.

[0105] As shown in FIG. 1, the second light sensor S2 is set up to detect light exclusively from the region of the diffusion panel 3. This means that the second light sensor S2 is set up to detect light exclusively from the region of the diffusion panel 3. In other words, the detection region B2 of the second light sensor S2 is set such that the second light sensor S2 detects light exclusively from the region of the diffusion panel 3, or that exclusively light from the region of the diffusion panel 3 strikes the second light sensor S2 in the detection region B2 of the second light sensor S2.

[0106] Consequently, by means of the second light sensor S2, no light E.sub.r2 is detected which is emitted by the illuminants 4 and is reflected from one or more walls of the housing interior of the luminaire 1. In other words, the detection region B2 of the second light sensor S2 is set such that, in the detection region B2 of the second light sensor S2, light E.sub.r2 emitted by the illuminants 4 and reflected from one or more walls of the housing interior does not strike the second light sensor S2.

[0107] Specifically, the second light sensor S2 is set up to detect exclusively light E.sub.t which enters through the diffusion panel 3 into the housing interior from the area outside of the housing 2 and light E.sub.r1 emitted by the illuminants 4 and reflected from the diffusion panel 3. That is to say, the light which strikes the second light sensor S2 in the detection region B2 of the second light sensor S2 is composed of light E.sub.t which enters through the diffusion panel 3 into the housing interior from the area outside of the housing 2; and light E.sub.r1 emitted by the illuminants 4 and reflected from the diffusion panel 3.

[0108] The two light sensors S1 and S2 are set up to provide or supply their detection results, i.e., detection values, to a processing device, which device can then determine the ambient light of the luminaire 1 on the basis of these detection values that are detected by the two light sensors S1 and S2. Consequently, the two light sensors S1 and S2, in particular the detection values detected by them, make it possible to deduce the ambient light of the luminaire 1.

[0109] Preferably, the luminaire 1 comprises such a processing device. Such a luminaire is shown in FIG. 2.

[0110] The two light sensors S1 and S2 are in particular set up to provide their detection results to the outside or to the area outside of the luminaire housing.

[0111] FIG. 2 shows a schematic representation of a further preferred embodiment of a luminaire according to the invention.

[0112] The above description of the luminaire according to one aspect of the present invention is accordingly applicable for the luminaire 1 of FIG. 2.

[0113] The luminaire 1 shown in FIG. 2 corresponds to the luminaire shown in FIG. 1. Consequently, the above description of the luminaire of FIG. 1 is likewise applicable for the luminaire 1 of FIG. 2.

[0114] In the following, essentially only the differences between the luminaire 1 of FIG. 2 and the luminaire shown in FIG. 1 are described in order to avoid repetition. Otherwise, reference is made to the above description of the luminaire in FIG. 1.

[0115] The luminaire 1 of FIG. 2 differs from the luminaire of FIG. 1 in that the luminaire 1 of FIG. 2 comprises a processing device 6.

[0116] The processing device 6 can be designed like the processing device described with respect to the luminaire according to one aspect of the present invention.

[0117] The processing device 6 can be a process, a microprocessor, a controller, a microcontroller, an application-specific integrated circuit (ASIC) or any combination of these elements.

[0118] According to FIG. 2, the processing device 6 of the luminaire 1 is arranged in the area outside of the housing 2 of the luminaire 1. Alternatively, the processing device 6 can also be arranged within the housing 2, i.e., in the housing interior of the luminaire 1. In particular, the processing device 6 can be arranged on the printed circuit board 5.

[0119] As shown in FIG. 2, the two light sensors S1 and S2 are set up to supply their detection values or detection results to the processing device 6 (cf. lines between the light sensors S1, S2 and the processing device 6).

[0120] The processing device 6 is then set up to determine the ambient light of the luminaire 1 on the basis of the detection values that were detected by the two light sensors S1 and S2. In other words, the processing device 6 is set up to process the detection values detected by the two light sensors S1 and S2 in order to determine the ambient light of the luminaire 1.

[0121] For this purpose, the processing device 6 is set up to determine the light emitted by the illuminants 4 on the basis of detection values which the first light sensor S1 detects. In other words, the processing device 6 is set up to determine the light emitted by the illuminants 4 on the basis of the detection result of the first light sensor S1. The detection values or the detection result of the first light sensor S1 make it possible to deduce the light emitted by the illuminants 4. As already stated above, the first light sensor S1 detects the light E.sub.t entering through the diffusion panel 3 into the housing interior of the luminaire 1 from the area outside of the housing 2, and the light E.sub.r1 and E.sub.r2 emitted by the illuminants 4 and reflected from the diffusion panel 3 and at least one wall of the housing interior.

[0122] The processing device 6 is set up to determine, on the basis of the detection result of the first light sensor S1, the light proportion E.sub.r2 of the light detected by the first light sensor S1, which light proportion is emitted by the illuminants 4 and is reflected from at least one wall of the housing interior. The processing device 6 is then set up to determine the light emitted or radiated by the illuminants 4 on the basis of this determined light proportion E.sub.r2. In other words, the processing device 6 is then set up to deduce the light emitted or radiated by the illuminants 4 on the basis of this determined light proportion E.sub.r2.

[0123] In particular, for this purpose the walls of the housing interior of the luminaire 1 are designed such that the light E.sub.r2 emitted by the illuminants 4 and reflected from at least one wall of the housing interior differs from the light E.sub.r1 emitted by the illuminants 4 and reflected from the diffusion panel 3.

[0124] The processing device 6 is set up to determine the ambient light of the luminaire on the basis of the detection values detected by the second light sensor S2 as well as on the basis of the light emitted by the illuminants 4, which was determined on the basis of the detection values detected by the first light sensor S1. In other words, the processing device 6 is set up to determine the ambient light of the luminaire on the basis of the detection result of the second light sensor S2 and of the light proportion determined on the basis of the detection result of the first light sensor S1, said light component being emitted by the illuminants 4.

[0125] The detection values or the detection result of the second light sensor S2 make it possible to deduce the light E.sub.t which enters through the diffusion panel 3 into the housing interior from the area outside of the luminaire housing 2 and consequently the ambient light of the luminaire 1. The second light sensor S2 detects exclusively light from the region of the diffusion panel 3, as already stated above. That is to say, the second light sensor S2 detects exclusively light E.sub.t which enters through the diffusion panel 3 into the housing interior from the area outside of the housing 2 and light E.sub.r1 emitted by the illuminants 4 and reflected from the diffusion panel 3.

[0126] The processing device 6 is set up to determine from the light detected by the second light sensor S2—on the basis of the light proportion determined using the detection result of the first light sensor S1, which light component is emitted by the illuminants 4—the light component that enters through the diffusion panel 3 into the housing interior from the area outside of the housing 2. The light detected by the second light sensor S2 corresponds to the light E.sub.t which enters through the diffusion panel 3 into the housing interior from the area outside of the housing 2, and to the light emitted by the illuminants 4 and reflected from the diffusion panel 3. In other words, the processing device 6 is then set up to deduce—on the basis of the light that is emitted by the illuminant 4 and is determined using the detection result of the first light sensor S1, and of the detection result of the second light sensor S2—the light E.sub.t which enters through the diffusion panel 3 into the housing interior from the area outside of the housing 2, and thus the ambient light of the luminaire 1.

[0127] The processing device 6 is set up to determine the ambient light of the luminaire 1 using mathematical models/algorithms and/or comparative measurements of known light situations of the surroundings of the luminaire 1. In other words, the processing device 6 is set up to carry out the above-described processing of the detection values of the two light sensors S1 and S2 using mathematical models/algorithms and/or comparative measurements of known light situations of the surroundings of the luminaire 1 in order to determine the ambient light of the luminaire 1.

[0128] The mathematical models/algorithms and/or comparative measurements of known light situations of the surroundings of the luminaire 1 are stored in a memory of the luminaire 1 (not shown in FIG. 2), which the processing device 6 can access. The processing device 6 can in particular write data into the memory and read data from the memory. The memory is preferably a component of the processing device 6.

[0129] Additionally or alternatively, the mathematical models/algorithms and/or comparative measurements, which are preferably stored in the memory, can be supplied to the processing device 6 from the area outside of the luminaire 1.

[0130] In particular, the processing device 6 is set up to generate at least one characteristic curve on the basis of the comparison measurements and to determine the ambient light of the luminaire 1 using the at least one characteristic curve. Consequently, the processing device 6 is set up to carry out the above-described processing of the detection values of the two light sensors S1 and S2 using the at least one characteristic curve in order to determine the ambient light of the luminaire 1. The processing device 6 can store the at least one characteristic curve in the memory.

[0131] With the luminaire 1 according to the invention, it is thus possible to ensure correct detection of the ambient light of the luminaire 1 for different dimming levels or dimming values of the light emission of the illuminants 4 as well as temporally changing reflecting light proportions in the housing interior of the luminaire 1.

[0132] As indicated in FIG. 2, the processing device 6 is in particular also set up to control or set the light emission of the illuminants 4 of the luminaire 1 (cf. lines between the illuminants 4 and the processing device 6).

[0133] The processing device 6 is set up to control the light emission of the illuminants 4 on the basis of the determined ambient light of the luminaire 1. In other words, the processing device 6 is set up to control the light emission of the illuminants 4 on the basis of the detection values of the two light sensors S1 and S2. That is to say, the processing device 6 is set up to process the detection values of the two light sensors S1 and S2 as described above in order to determine the ambient light of the luminaire 1 and to control the light emission of the illuminants 4 on the basis of the determined ambient light.

[0134] In particular, the processing device 6 is set up to deduce the brightness of the surroundings of the luminaire 1 on the basis of the determined ambient light of the luminaire 1 and to control the light emission of the illuminants 4 on the basis of the brightness of the surroundings of the luminaire 1 in such a way that a brightness setpoint value for the surroundings is attained. In other words, the processing device 6 is set up to determine the brightness of the surroundings of the luminaire 1 on the basis of the determined ambient light of the luminaire 1 and to carry out a regulation of the light emission of the illuminants 4 on the basis of the determined ambient brightness with respect to a brightness setpoint value. The processing device 6 is therefore set up to regulate the light emission of the illuminants 4.

[0135] The brightness setpoint value can be supplied to the processing device 6 from outside or from the area outside of the luminaire 1 and/or be stored in the memory of the luminaire 1 (not shown in FIG. 2).

[0136] Consequently, by changing or setting the brightness setpoint value, the light emission of the illuminants 4 and consequently the light emission of the luminaire 1 can be changed, in particular dimmed.

[0137] The processing device 6 is preferably set up to control the light emission of the illuminants 4 on the basis of at least one control command, such as a dimming value, wherein the processing device 6 is set up to obtain or receive the at least one control command supplied from outside or from the area outside of the luminaire 1. The higher a dimming value supplied, the higher the light emission of the illuminants 4 should preferably be.

[0138] The processing device 6 can in particular also be set up to provide or transmit the detection results or detection values of the two light sensors S1 and S2 and/or the determined ambient light of the luminaire 1 to the outside or to the area outside of the luminaire 1. In particular, the processing device 6 can be set up to provide or transmit the detection results of the two light sensors S1 and S2 and/or the determined ambient light of the luminaire 1 to at least one further processing device or control device, such as, for example, a global processing device of a lighting system in which the luminaire 1 can be arranged, to the outside or to the area outside of the luminaire 1. Such a preferred embodiment is shown in FIG. 4, which shows a lighting system 8 comprising a luminaire 1 according to FIG. 2 and a global processing device 9.

[0139] According to FIG. 2, the processing device 6 is a component of the luminaire 1. However, the processing device 6 can also not be a component of the luminaire 1 and can consequently be an external processing device 6 (not shown in FIG. 2). This case is shown in FIG. 3.

[0140] FIG. 3 shows a schematic representation of a preferred embodiment of a lighting system according to the invention.

[0141] The above description of the lighting system according to a further aspect of the present invention is accordingly applicable for the lighting system 8 of FIG. 3.

[0142] According to FIG. 3, the lighting system 8 comprises a luminaire 1 and a processing device 7, wherein the processing device 7 is set up to obtain detection values supplied directly from the light sensors S1 and S2 of the luminaire 1 and to determine the ambient light of the luminaire 1 on the basis of these. The processing device 7 is further set up to control the light emission of the illuminants 4, in particular on the basis of the determined ambient light.

[0143] The above description of the luminaire according to one aspect of the present invention is accordingly applicable for the luminaire 1 of the lighting system 8 of FIG. 3.

[0144] The luminaire 1 of the lighting system 8 of FIG. 3 corresponds to the luminaire shown in FIG. 1, so that the above description of the luminaire of FIG. 1 is also applicable for the luminaire 1 of the lighting system 8 of FIG. 3. As a result, no further statements are made regarding the luminaire 1 of the lighting system 8 of FIG. 3, but reference is merely made to the above description of the luminaire of FIG. 1 in order to avoid repetition.

[0145] The processing device 7 of the lighting system 8 of FIG. 3 corresponds to the processing device of the luminaire shown in FIG. 2, so that the above description of the processing device of the luminaire shown in FIG. 2 is also applicable for the processing device 7 of the lighting system 8 of FIG. 3. Consequently, in terms of the processing device 7 of FIG. 3, essentially only the differences from the processing device of the luminaire shown in FIG. 2 are described below in order to avoid repetition. Otherwise, reference is made to the above description of the processing device of FIG. 2.

[0146] According to FIG. 3, the processing device 7 is arranged in the area outside of the luminaire 1 and with it forms the lighting system 8. The lighting system 8 can also have more than just one luminaire, wherein the processing device 7 is then set up to control the plurality of luminaires, in particular to control them in the same way as the luminaire 1. At least one luminaire of the further optional luminaires of the lighting system 8 can be designed like the luminaire 1 shown in FIG. 3.

[0147] The processing device 7 of the lighting system 8 of FIG. 3 is set up in the same way as the processing device 6 of FIG. 2 to process the detection values of the two light sensors S1 and S2 of the luminaire 1 in order to determine the ambient light of the luminaire 1, and to control the light emission of the illuminants 4 of the luminaire 1 on the basis of the determined ambient light and/or at least one external control command.

[0148] The processing device 7 can in particular also be set up to provide or transmit the detection results or detection values of the two light sensors S1 and S2 and/or the determined ambient light of the luminaire 1 to a further optional device of the lighting system 8, such as, for example, a further processing device or control device or a further luminaire.

[0149] Preferably, the processing device 7 can also be set up to control the light emission from at least one further luminaire on the basis of the detection results or detection values of the two light sensors S1 and S2 and/or of the determined ambient light of the luminaire 1 in the event that the lighting system 8 also comprises at least one further luminaire in addition to the luminaire 1.

[0150] FIG. 4 shows a schematic representation of a further preferred embodiment of a lighting system according to the invention.

[0151] The above description of the lighting system according to a further aspect of the present invention is accordingly applicable for the lighting system 8 of FIG. 4.

[0152] The lighting system 8 of FIG. 4 differs from the lighting system of FIG. 3 in that the luminaire 1 of the lighting system 8 of FIG. 4, like the luminaire shown in FIG. 2, comprises a processing device 6.

[0153] The luminaire 1 of the lighting system 8 of FIG. 4 corresponds to the luminaire shown in FIG. 2, so that the above description of the luminaire of FIG. 1 and the above description of the luminaire of FIG. 2 are also applicable for the luminaire 1 of the lighting system 8 of FIG. 4. As a result, no further statements are made regarding the luminaire 1 of the lighting system 8 of FIG. 4, but reference is merely made to the above description of the luminaire of FIG. 1 and the above description of the luminaire in FIG. 2 in order to avoid repetition.

[0154] The lighting system 8 shown in FIG. 4 comprises, in addition to the luminaire 1, a processing device 9, which can also be referred to as a global processing device.

[0155] The processing device 6 of the luminaire 1 is set up to provide or transmit to the global processing device 9 the detection results or detection values of the two light sensors S1 and S2 and/or the determined ambient light of the luminaire 1 to the outside or to the area outside of the luminaire 1.

[0156] The global processing device 9 is thus set up to obtain detection values supplied indirectly, namely via the processing device 6 of the luminaire 1, from the light sensors S1 and S2.

[0157] The global processing device 9 is preferably set up to supply at least one control command and/or a brightness setpoint value to the processing device 6 of the luminaire 1 in order to control the light emission of the illuminants 4 of the luminaire 1 and consequently the light emission of the luminaire 1.

[0158] In particular, the global processing device 9 is set up to control the light emission of the luminaire 1 on the basis of detection results or detection values of the two light sensors S1 and S2 of the luminaire 1 and/or of the determined ambient light of the luminaire 1.

[0159] The lighting system 8 of FIG. 4 can also have more than just one luminaire, wherein the global processing device 9 is then set up to control the plurality of luminaires. In particular, the global processing device 9 is then set up to control the plurality of luminaires in the same manner as the luminaire 1. At least one luminaire of the further optional luminaires of the lighting system 8 can be designed like the luminaire 1 shown in FIG. 4 or like the luminaire shown in FIG. 1.

[0160] Preferably, the global processing device 9 can also be set up to control the light emission from at least one further luminaire on the basis of detection results or detection values of the two light sensors S1 and S2 of the luminaire 1 and/or of the determined ambient light of the luminaire 1, in the event that the lighting system 8 also comprises at least one further luminaire in addition to the luminaire 1.