Illumination system, control method for illumination system and program

Abstract

To provide an illumination system capable of easily adjusting an output ratio of four or more light-emitting sections to an output ratio conforming to a predetermined performance condition in a light color which is desired by a user.SOLUTION: An illumination system 1 emits combined light of four or more light-emitting sections 211a-211d as illumination light. The illumination system 1 comprises the four or more light-emitting sections 211a-211d, a turning-on circuit 22, a turning-on control section 62, an operation section 3 and a determination section 64. The turning-on control section 62 controls the turning-on circuit 22. The operation section 3 receives an operation for inputting to the illumination system 1 a determination value of a first output ratio of the three light-emitting sections 211a-211c. The determination section 64 determines an output ratio reproducing a color which is designated by the inputted determination value of the first output ratio and conforming to a predetermined performance condition, the output ratio being a second output ratio of the four or more light-emitting sections 211a-211d. The turning-on control section 62 controls the turning-on circuit 22 so as to turn on the light-emitting sections 211a-211d on the basis of the determined second output ratio.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure generally relates to a lighting system, a control method for a lighting system, and a program, and more particularly to a lighting system that emits combined light from four or more light-emitting elements that emit light of different colors as illumination light, a control method for a lighting system, and a program that causes one or more processors to execute the control method for a lighting system. [Background technology]

[0002] The lighting device (lighting system) described in Patent Document 1 includes a plurality of light-emitting element groups (four or more light-emitting units), an input device (operation unit), and a circuit unit (lighting control unit). The plurality of light-emitting element groups are six light-emitting element groups that emit light of different colors (e.g., red, green, blue, white, cyan, and yellow). The input device is a device through which a user inputs a color number of a color that the user wants the lighting device to emit. In the lighting device, a correspondence relationship between the color number and a combination of color output values ​​of each of the plurality of light-emitting element groups is preset as a table. The user refers to the table, selects a color number corresponding to a desired combination of color output values ​​(first output ratio), and inputs the selected color number into the input device. When a color number is input into the input device, the circuit unit controls the color output value of each of the plurality of light-emitting element groups so that the color output value of each of the plurality of light-emitting element groups becomes the color output value corresponding to the color number input into the input device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-90757 Summary of the Invention [Problem to be solved by the invention]

[0004] In the lighting device described in Patent Document 1, the plurality of light-emitting element groups are four or more light-emitting element groups that emit light of different colors. Generally, the combination of color output values ​​(output ratios) of the four or more light-emitting element groups that reproduces one light color of the combined light of the four or more light-emitting element groups is not limited to one set, but there are multiple sets. Therefore, when using the lighting device in a stage production, the director can reproduce multiple output ratios that will result in different appearances of the illuminated object, even when irradiating the same light color with illumination light. As a result, the output ratios of the four or more light-emitting element groups can be adjusted to achieve the optimal appearance according to the content of the stage production (i.e., to suit the specified production conditions).

[0005] However, in the lighting device described in Patent Document 1, the lighting light is preset, so the lighting light may not be the color of light desired by the stage director. On the other hand, it is difficult to adjust the output ratio of the four or more light-emitting element groups to match the lighting conditions for the desired color of light.

[0006] The object of the present disclosure is to provide a lighting system, a control method for a lighting system, and a program that can easily adjust the output ratio of four or more light-emitting units that emit light of different colors in a light color desired by a user to an output ratio that satisfies specified performance conditions. [Means for solving the problem]

[0007] A lighting system according to one aspect of the present disclosure emits, as illumination light, combined light from four or more light-emitting units that emit light of different colors. The lighting system includes the four or more light-emitting units, a lighting circuit, a lighting control unit, an operation unit, and a determination unit. The lighting circuit lights up the four or more light-emitting units. The lighting control unit controls the lighting circuit. The operation unit accepts an operation for inputting determined values ​​of first output ratios of three of the four or more light-emitting units to the lighting system. The determination unit determines second output ratios of the four or more light-emitting units, which are output ratios that reproduce a color specified by the determined values ​​of the first output ratios input to the operation unit and that comply with predetermined rendering conditions. The lighting control unit controls the lighting circuit so that the four or more light-emitting units are turned on based on the second output ratio determined by the determination unit.

[0008] In the lighting system according to one aspect of the present disclosure, the operation unit receives an operation for inputting candidates for the determined value of the first output ratio to the lighting system, and the lighting control unit controls the lighting circuit to light up the three light-emitting elements based on the candidates input to the operation unit.

[0009] A lighting system control method according to one aspect of the present disclosure is a method for controlling a lighting system that outputs, as illumination light, combined light from four or more light-emitting units that emit light of different colors. The lighting system control method includes a lighting control step, an operation step, and a determination step. The lighting control step controls a lighting circuit that lights the four or more light-emitting units. The operation step accepts an operation for inputting determined values ​​of first output ratios of three of the four or more light-emitting units to the lighting system. The determination step determines second output ratios of the four or more light-emitting units, which are output ratios that reproduce a color specified by the determined values ​​of the first output ratios input in the operation step and that comply with predetermined rendering conditions. The lighting control step controls the lighting circuit so that the four or more light-emitting units are turned on based on the second output ratios determined in the determination step.

[0010] In the lighting system control method according to the aspect of the present disclosure, the operating step receives an operation for inputting candidates for the determined value of the first output ratio to the lighting system, and the lighting control step controls the lighting circuit so that the three light-emitting units are turned on based on the candidates input in the operating step.

[0011] A program according to one aspect of the present disclosure causes one or more processors to execute the lighting system control method. [Effects of the Invention]

[0012] The lighting system, lighting system control method, and program disclosed herein have the advantage that the output ratio of four or more light-emitting units that emit light of different colors can be easily adjusted to an output ratio that suits the specified performance conditions, in the light color desired by the user. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a configuration diagram of a lighting system according to an embodiment. [Figure 2] FIG. 2 is a perspective view showing a state in which the above lighting system is illuminating performers on a stage. [Figure 3] FIG. 3 is an explanatory diagram illustrating a chromaticity diagram displayed on the display unit when candidates for the determined value of the first output ratio are input to the lighting system. [Figure 4] FIG. 4 is an explanatory diagram illustrating an example of an operation form of the operation unit used when inputting candidates for the determined value of the first output ratio to the lighting system. [Figure 5] FIG. 5 is a flowchart illustrating the operation of the lighting system. [Figure 6] FIG. 6 is an explanatory diagram illustrating an example of an operation form of an operation unit used when inputting candidates for the determined value of the first output ratio in the first modification to the lighting system. [Figure 7] FIG. 7 is a configuration diagram of a lighting system according to the second modification. [Figure 8] FIG. 8 is a configuration diagram of a lighting system according to the third modification. [Figure 9] FIG. 9 is a flowchart illustrating the operation of the lighting system. [Figure 10] FIG. 10 is a configuration diagram of a lighting system according to the fourth modification. [Figure 11] FIG. 11 is a configuration diagram of a lighting system according to the fifth modification. [Figure 12] FIG. 12 is a configuration diagram of a lighting system according to the sixth modification. DETAILED DESCRIPTION OF THE INVENTION

[0014] (1) Implementation form Hereinafter, a lighting system according to an embodiment will be described with reference to the drawings.

[0015] (1-1) Overview As shown in FIG. 1, a lighting system 1 according to this embodiment emits, as illumination light, combined light from four or more (four in the example of FIG. 1) light-emitting units 211a-211d that emit light of different colors. The lighting system 1 includes the four or more light-emitting units 211a-211d, a lighting circuit 22, a lighting control unit 62, an operation unit 3, and a determination unit 64. The lighting circuit 22 lights up the four or more light-emitting units 211a-211d. The lighting control unit 62 controls the lighting circuit 22. The operation unit 3 accepts an operation for inputting, to the lighting system 1, determined values ​​of first output ratios for three of the four or more light-emitting units 211a-211d (i.e., 211a-211c). The determination unit 64 determines second output ratios for the four or more light-emitting units 211a-211d that reproduce a color specified by the determined value of the first output ratio input to the operation unit 3 and that are compatible with predetermined rendering conditions. The lighting control unit 62 controls the lighting circuit 22 based on the second output ratio determined by the determination unit 64 so that four or more light-emitting units 211a to 211d are lit.

[0016] According to this configuration, by inputting the determined values ​​of the first output ratios of the three light-emitting elements 211a-211c to the lighting system 1 through an input operation on the operation unit 3, the light color of the illumination light of the lighting system 1 can be easily determined as the color specified by the determined values ​​of the first output ratio. Then, the determination unit 64 determines second output ratios of the four or more light-emitting elements 211a-211d that reproduce the color specified by the determined values ​​of the first output ratio and that are compatible with predetermined rendering conditions, and the lighting control unit 62 controls the lighting circuit 22 to light up the four or more light-emitting elements 211a-211d based on the second output ratios determined by the determination unit 64. In other words, by inputting the determined values ​​of the first output ratios, the user can easily adjust the second output ratios of the four or more light-emitting elements 211a-211d to second output ratios that are compatible with predetermined rendering conditions, in a light color desired by the user.

[0017] (2)Details The configuration of a lighting system 1 according to an embodiment will be described with reference to FIG.

[0018] As shown in FIG. 1, the lighting system 1 according to this embodiment emits, as illumination light, combined light from four or more (four in FIG. 1) light-emitting units 211a-211d that emit light of different colors (e.g., red, green, blue, and cyan). The lighting system 1 adjusts the output value of each of the light-emitting units 211a-211d to combine light of four or more colors (e.g., red, green, blue, and cyan) and emit illumination light of various colors required for stage production. The four light-emitting units 211a-211d include three light-emitting units 211a-211c that emit three predetermined colors (e.g., the three primary colors of red, green, and blue), as well as another light-emitting unit 211d that emits a color other than the three predetermined colors (cyan in FIG. 1). The illumination light of the lighting system 1 is combined light from the four or more light-emitting units 211a-211d. Therefore, the four or more light-emitting units 211a-211d can have multiple output ratios for illumination light of the same light color. In other words, the four or more light-emitting units 211a-211d can have multiple output ratios for illumination light of the same light color that result in different appearances of the illuminated object. This makes it possible to adjust the illumination light of the lighting system 1 to an optimal appearance according to the content of the stage production (i.e., to satisfy specified production conditions), even when emitting illumination light of the same light color.

[0019] As described above, the lighting system 1 can be used as a spotlight for stage productions that require illumination light of various light colors (see FIG. 2). In this case, the illumination light L1 of the lighting system 1 is spotlight light that particularly brightens an area R1 on the stage where the performer E1, who is the illumination target, is located.

[0020] The lighting system 1 includes a lighting device 2, an operation unit 3, a display unit 4, a storage unit 5, and a control unit 6.

[0021] (2-1) Details of lighting device 2 The lighting device 2 emits illumination light L1 (see FIG. 2) under the control of the control unit 6. Note that, in this embodiment, it is assumed that the illumination light L1 is spotlight, but the illumination light L1 is not limited to spotlight.

[0022] The lighting device 2 includes a light-emitting module 21 and a lighting circuit 22.

[0023] The light emitting module 21 constitutes a light source of the lighting device 2. The light emitting module 21 includes four or more (four in the example of FIG. 1) light emitting units 211a to 211d and a mounting substrate.

[0024] The four or more light-emitting units 211a to 211d emit light of different colors. The four or more light-emitting units 211a to 211d include a light-emitting unit 211a that emits red light, a light-emitting unit 211b that emits green light, a light-emitting unit 211c that emits blue light, and a light-emitting unit 211d that emits cyan light. The four or more light-emitting units 211a to 211d each include a plurality of light-emitting elements (for example, monochromatic LEDs) that emit light of the same color as the light-emitting units 211a to 211d. That is, the light-emitting unit 211a that emits red light includes a plurality of red light-emitting elements (for example, monochromatic red LEDs). The light-emitting unit 211b that emits green light includes a plurality of green light-emitting elements (for example, monochromatic green LEDs). The light-emitting unit 211c that emits blue light includes a plurality of blue light-emitting elements (for example, monochromatic blue LEDs). The light-emitting unit 211d that emits cyan light includes a plurality of cyan monochromatic light-emitting elements (for example, cyan monochromatic LEDs). When the red light-emitting element is a monochromatic light-emitting element, the red light-emitting element is an element that emits red light having a peak wavelength of 600 nm to 650 nm in its spectral distribution. When the green light-emitting element is a monochromatic light-emitting element, the green light-emitting element is an element that emits green light having a peak wavelength of 500 nm to 550 nm in its spectral distribution. When the blue light-emitting element is a monochromatic light-emitting element, the blue light-emitting element is an element that emits blue light having a peak wavelength of 430 nm to 480 nm in its spectral distribution. When the cyan light-emitting element is a monochromatic light-emitting element, the cyan light-emitting element is an element that emits cyan light having a peak wavelength of 470 nm to 520 nm in its spectral distribution. The plurality of light-emitting elements included in each of the light-emitting units 211a to 211d may be connected in series with each other, in parallel with each other, or a mixture of series and parallel connections.

[0025] Each of the four or more light emitting sections 211a to 211d is not limited to including a plurality of light emitting elements, and may include only one light emitting element.

[0026] The light emitting units 211a to 211d emit light using a direct current supplied from the lighting circuit 22 as a drive current. The light emitting units 211a to 211d change the amount of light they emit according to the amount of the drive current supplied from the lighting circuit 22.

[0027] The mounting board mounts four or more light emitting units 211a-211d. That is, the four or more light emitting units 211a-211d are mounted on the same mounting board. Note that the four or more light emitting units 211a-211d are not limited to being mounted on the same mounting board, and may be mounted on different mounting boards, or some may be mounted on the same mounting board and the remaining parts may be mounted on different mounting boards.

[0028] The lighting circuit 22 controls the light emission (lighting) of the light-emitting units 211a to 211d based on the control of a lighting control unit 62 (described later) of the control unit 6. More specifically, the lighting circuit 22 controls the light emission of the light-emitting units 211a to 211d by inputting a drive current of a value specified by the lighting control unit 62 to the light-emitting units 211a to 211d.

[0029] The lighting device 2 emits combined light from the four or more light-emitting units 211a to 211d as spotlight light in accordance with the control of the control unit 6. The lighting device 2 emits illumination light using only three predetermined light-emitting units 211a to 211c out of the four or more light-emitting units 211a to 211d in accordance with the control of the control unit 6, or emits illumination light using all of the four or more light-emitting units 211a to 211d.

[0030] (2-2) Details of operation unit 3 The operation unit 3 is operated by the user and accepts various operations for the lighting system 1. The operation unit 3 includes, for example, at least one of physical keys and a touch sensor. The touch sensor is a sensor that detects the position where the user touches the operation screen displayed on the display unit 4, and is arranged on the display screen of the display unit 4.

[0031] In the following description, the output ratio of three predetermined light-emitting elements (e.g., light-emitting elements 211a, 211b, and 211c) among the four or more light-emitting elements 211a to 211d may be referred to as the "first output ratio," and the output ratio of the four or more light-emitting elements 211a to 211d may be referred to as the "second output ratio."

[0032] The output value of each of the four or more light-emitting elements 211a to 211d is set to a numerical value between 0 and 100. The numerical value "0" is an output value where the amount of light emitted from the light-emitting elements 211a to 211d is zero. The numerical value "100" is an output value where the amount of light emitted from the light-emitting elements 211a to 211d is the maximum. The second output ratio is a combination of the output values ​​of each of the four or more light-emitting elements 211a to 211d and is expressed as (X1, X2, X3, X4). The numerical values ​​X1 to X4 are the output values ​​of the light-emitting elements 211a to 211d, respectively. The second output ratio is the spectrum of combined light where the output values ​​of each of the four or more light-emitting elements 211a to 211d are color components. The first output ratio is a combination of the output values ​​of each of three predetermined light-emitting elements 211a to 211c and is expressed as (X1, X2, X3). The first output ratio is the spectrum of the combined light whose color components are the output values ​​of the three predetermined light-emitting elements 211a to 211c.

[0033] The operation unit 3 receives input of first to third operations as the various operations described above.

[0034] The first operation is an operation for inputting a candidate for the determined value of the first output ratio into the lighting system 1. The determined value of the first output ratio is a first output ratio used to determine the light color of the illumination light of the lighting device 2. The candidate for the determined value of the first output ratio is a first output ratio among the first output ratios that has not yet been determined as a determined value. In this embodiment, the candidate for the determined value of the first output ratio is input to the lighting system 1 by moving point P1 to a desired point on the chromaticity diagram G1 (see FIG. 3 ) displayed on the display unit 4 through an input operation (first operation) on the operation unit 3 and specifying the desired point by the position of point P1. Here, the chromaticity diagram G1 is a diagram that represents the chromaticities of all light colors visible to humans as points on a plane coordinate system. In FIG. 3 , the chromaticity diagram G1 is drawn in solid white for ease of drawing, but is actually displayed in color. In the example of FIG. 3 , the chromaticity diagram G1 is horseshoe-shaped, but is not limited to a horseshoe shape.

[0035] Three points Q1, Q2, and Q3 corresponding to the emission colors of the three predetermined light-emitting elements 211a to 211c are preset on the chromaticity diagram G1. This setting is performed by inputting information into the operation unit 3. When point P1 is moved to a desired point on the chromaticity diagram G1 by inputting information into the operation unit 3, the control unit 6 (described later) calculates the spectrum of the color (chromaticity) specified by the position of the destination point P1 using the ratios of the three colors specified by the three points Q1, Q2, and Q3 (i.e., the emission colors of the three predetermined light-emitting elements 211a to 211c), and the calculated spectrum becomes a candidate for the determined value of the first output ratio. By determining the candidate for the determined value of the first output ratio in this manner, the candidate for the determined value of the first output ratio is input to the lighting system 1.

[0036] The range of colors having the three colors specified by the three points Q1, Q2, and Q3 (i.e., the emission colors of the three predetermined light-emitting elements 211a to 211c) as color components is the colors within the range of triangle T1 defined by the three points Q1, Q2, and Q3. Therefore, candidates for the determined value of the first output ratio can be input within the range of triangle T1 on the chromaticity diagram G1.

[0037] Generally, when a color spectrum is composed of three color components, there is a one-to-one correspondence between the color and the spectrum. Therefore, there is a one-to-one correspondence between a point in triangle T1 on the chromaticity diagram G1 and a spectrum that reproduces the color (chromaticity) specified by that point and has the three colors specified by three points Q1, Q2, and Q3 as color components (i.e., a candidate value for the first output ratio). Therefore, when a point in triangle T1 on the chromaticity diagram G1 is specified by point P1 on the chromaticity diagram G1, one candidate value for the first output ratio is determined.

[0038] The second operation is an operation for inputting the determined value of the first output ratio to the lighting system 1. In this embodiment, the second operation is a decision operation for deciding the candidate for the determined value of the first output ratio input by the first operation as the determined value of the first output ratio. In other words, after the candidate for the determined value of the first output ratio is input to the lighting system 1, when a decision operation (second operation) is input to the operation unit 3, the candidate for the determined value of the first output ratio input before the input of the decision operation is decided as the determined value of the first output ratio. By this decision, the determined value of the first output ratio is input to the lighting system 1.

[0039] The third operation is an operation for selecting a predetermined rendering condition from a plurality of rendering conditions. The plurality of rendering conditions are stored in the storage unit 5.

[0040] The plurality of rendering conditions include, for example, a first rendering condition, a second rendering condition, and a third rendering condition. The first rendering condition is, for example, a rendering condition in which the skin of the performer (illumination target) illuminated by the illumination light from the lighting device 2 looks beautiful. The second rendering condition is, for example, a rendering condition in which the color of the costume of the performer (illumination target) illuminated by the illumination light from the lighting device 2 looks vivid. The third rendering condition is, for example, a rendering condition in which the illumination light reproduces natural light.

[0041] (2-3) Details of display section 4 The display unit 4 is a display device capable of displaying various types of information. The display unit 4 is, for example, a dot matrix display device capable of displaying full-color images. The display unit 4 is, for example, a liquid crystal display device. The display unit 4 displays a chromaticity diagram G1 (see FIG. 3). The display unit 4 also displays a point P1 and three points Q1, Q2, and Q3 superimposed on the displayed chromaticity diagram G1.

[0042] (2-4) Details of the memory unit 5 The storage unit 5 is a storage device for storing information (various programs and various data) used in the processing of the control unit 6. The storage unit 5 is a non-volatile storage device. The storage unit 5 is configured, for example, by an SSD (Solid State Drive) or an HDD (Hard Disk Drive). The storage unit 5 stores information on the chromaticity diagram G1.

[0043] (2-5) Details of the control unit 6 The control unit 6 controls the lighting device 2, the display unit 4, and the storage unit 5 based on the input operation of the operation unit 3. Furthermore, the control unit 6 determines, as the second output ratios of the four or more light-emitting units 211a to 211d, second output ratios that reproduce the color specified by the determined value of the first output ratio input by the first operation and that comply with predetermined rendering conditions selected by the third operation. The second output ratios that comply with the predetermined rendering conditions selected by the third operation are an example of the predetermined rendering conditions.

[0044] The control unit 6 mainly comprises, for example, a computer having a CPU (Central Processing Unit) and a memory, and various functions of the control unit 6 (functions of a display control unit 61, a lighting control unit 62, a processing unit 63, and a determination unit 64, which will be described later) are realized by executing a program stored in the memory by the CPU. The program may be pre-recorded in the memory of the computer, may be provided by being recorded on a recording medium such as a memory card, or may be provided via a telecommunications line such as the Internet.

[0045] The control unit 6 includes a display control unit 61, a lighting control unit 62, a processing unit 63, and a determination unit 64.

[0046] The display control unit 61 controls the display unit 4 based on a first operation input to the operation unit 3. More specifically, the display control unit 61 displays the chromaticity diagram G1 based on a predetermined input operation input to the operation unit 3 (i.e., an operation for displaying the chromaticity diagram G1 on the display unit 4), and displays the positions of the three points Q1, Q2, and Q3 and the position of point P1 superimposed on the displayed chromaticity diagram G1. The positions of the three points Q1, Q2, and Q3 are set by the input operation to the operation unit 3. The initial position of the position of point P1 is set, for example, to a predetermined position (e.g., the center position) within a triangle T1 defined by the three points Q1, Q2, and Q3. Furthermore, based on the first operation input to the operation unit 3, the display control unit 61 moves the position of point P1 on the chromaticity diagram G1 to a position specified by the first operation.

[0047] The lighting control unit 62 controls the illumination light of the lighting device 2 by controlling the light emission (lighting) of four or more light-emitting units 211a to 211d or the light emission (lighting) of three predetermined light-emitting units 211a to 211c via the lighting circuit 22 of the lighting device 2. The lighting control unit 62 controls the lighting circuit 22 based on an operation input to the operation unit 3 and control from the decision unit 64.

[0048] The processing unit 63 performs processing for determining the light color of illumination light from the lighting device 2. More specifically, when a first operation is input to the operation unit 3, the processing unit 63 calculates candidates for the determined value of the first output ratio specified by the input first operation. As described above, this calculation results in the candidate for the determined value of the first output ratio being input to the lighting system 1. In this embodiment, the first operation moves point P1 on the chromaticity diagram G1 displayed on the display unit 4 to a desired point. The processing unit 63 calculates a combination (i.e., spectrum) of the three color components specified by the three points Q1, Q2, and Q3 that reproduces the color specified by the position of point P1 on the chromaticity diagram G1. This calculated spectrum is a candidate for the determined value of the first output ratio. This calculation results in the candidate for the determined value of the first output ratio being input.

[0049] When the processing unit 63 calculates the candidate value for the first output ratio, the lighting control unit 62 controls the output values ​​of each of the three predetermined light-emitting elements 211a to 211c via the lighting circuit 22 of the lighting device 2 based on the calculation result. This control causes the lighting device 2 to emit illumination light having a color specified by the candidate value for the first output ratio. That is, in this embodiment, when a candidate value for the first output ratio is input to the lighting system 1 by an input operation (first operation) on the operation unit 3, the lighting device 2 emits illumination light having a color specified by the input candidate value for the first output ratio. This allows the user to actually see the color of the illumination light from the lighting device 2 (i.e., the color of the illumination light) specified by the candidate value for the first output ratio input by the third operation.

[0050] When a second operation (decision operation) is input to the operation unit 3, the processing unit 63 decides that the candidate value of the first output ratio specified by the position of point P1 on the chromaticity diagram G1 is the decided value of the first output ratio. With this decision, the decided value of the first output ratio is input to the lighting system 1. When the decided value of the first output ratio is input to the lighting system 1, the processing unit 63 uses the chromaticity diagram G1 to acquire color numeric value data of the color specified by the input decided value of the first output ratio. The color numeric value data is defined by the coordinates (x, y) of the point on the chromaticity diagram G1. The processing unit 63 stores the acquired color numeric value data in the storage unit 5.

[0051] The determination unit 64 performs processing for determining the second output ratio. More specifically, when the determined value of the first output ratio is input to the lighting system 1 by the second operation, the determination unit 64 determines a second output ratio that reproduces the color specified by the input determined value of the first output ratio (i.e., the color specified by the color numerical value data) and that is compatible with the predetermined rendering conditions selected by the third operation.

[0052] More specifically, first, the determination unit 64 extracts one or more second output ratios that reproduce the color specified by the acquired color numerical value data from all second output ratios that the four or more light-emitting units 211a to 211d can have, and then selects one second output ratio that matches the predetermined rendering condition selected by the third operation from the extracted one or more second output ratios.

[0053] Here, "selecting one second output ratio that meets the predetermined rendering conditions from among one or more second output ratios" means selecting a second output ratio that meets the predetermined rendering conditions if the one or more second output ratios include a second output ratio that meets the predetermined rendering conditions, or selecting a second output ratio that is closest to the predetermined rendering conditions from among one or more second output ratios if the one or more second output ratios do not include a second output ratio that meets the predetermined rendering conditions.

[0054] More specifically, the determination unit 64 calculates the numerical value of an evaluation index corresponding to a predetermined rendering condition for each of the extracted one or more second output ratios. Then, the determination unit 64 determines, from among the extracted one or more first output values, a first output value whose calculated numerical value matches the required value of the evaluation index required for the predetermined rendering condition as the second output ratio that matches the predetermined rendering condition. The first output value determined in this manner is the second output ratio that reproduces the color specified by the determined value of the first output ratio and matches the predetermined rendering condition.

[0055] Here, the above-mentioned "evaluation index" is, for example, the average rendering evaluation index Ra, the color rendering index R15, the color gamut area ratio Ga, etc. The average rendering evaluation index Ra is an index that indicates the degree to which the color of natural light is reproduced when an object is illuminated with illumination light. The color rendering index R15 is an index that indicates the degree to which the skin color of Japanese people is reproduced. The color gamut area ratio Ga is an index that indicates the range of colors that can be reproduced relative to the range of colors recognizable to the human eye (visible range).

[0056] [Table 1]

[0057] In the above explanation, we have explained the case where the four or more light-emitting units are four light-emitting units 211a to 211d, but in the specific example using Table 1, we will explain the case where the four or more light-emitting units include six light-emitting units (first light-emitting unit, second light-emitting unit, third light-emitting unit, fourth light-emitting unit, fifth light-emitting unit and sixth light-emitting unit).

[0058] Table 1 illustrates one or more second output ratios (first candidate, second candidate, third candidate, fourth candidate, ...) extracted when color numerical data (x, y) = (0.345, 0.352) and the numerical values ​​of evaluation indices (Ra, R15, Ga) calculated for the extracted one or more second output ratios (first candidate, second candidate, third candidate, fourth candidate, ...). For example, the first candidate has four or more light-emitting elements (first to sixth light-emitting elements) with second output ratios of (93, 100, 100, 100, 100, 94), an average rendering evaluation index Ra of 75, a color rendering evaluation index R15 of 72, and a color gamut area ratio Ga of 112.

[0059] Then, the determination unit 64 selects one second output ratio that matches the required value of the evaluation index required for the predetermined rendering condition from among the one or more extracted second output ratios (i.e., first candidate, second candidate, third candidate, fourth candidate, ...). For example, if the predetermined rendering condition is a natural light reproduction condition (i.e., a condition in which the required value of the average rendering evaluation index Ra is 100), the processing unit 63 selects, from among the one or more extracted second output ratios (first candidate, second candidate, third candidate, fourth candidate, ...), the second output ratio whose numerical value of the average rendering evaluation index Ra matches the required value of "100" for the average rendering evaluation index Ra (in this case, the second candidate having the numerical value "93" closest to the required value "100").

[0060] The determination unit 64 then determines the selected second output ratio (i.e., second candidate) as the second output ratio that reproduces the color specified by the determined value of the first output ratio and satisfies the predetermined rendering conditions. The determination unit 64 stores the determined second output ratio in the storage unit 5 in association with the above-mentioned numerical data.

[0061] When the determination unit 64 determines the second output ratio that reproduces the color specified by the determined value of the first output ratio and that satisfies the predetermined rendering conditions, the lighting control unit 62 controls the lighting circuit 22 of the lighting device 2 so that the second output ratios of the four or more light-emitting units 211a to 211d become the determined second output ratios. Through this control, illumination light that reproduces the color specified by the determined value of the first output ratio specified by the second operation and has a spectrum that satisfies the predetermined rendering conditions selected by the third operation is emitted from the lighting device 2.

[0062] (2-6) Specific examples of how to input the first operation to the operation unit 3 In this embodiment, the first operation (i.e., input of a candidate for the determined value of the first output ratio) is input to the operation unit 3 by moving point P1 to a desired point on the chromaticity diagram G1. An example of how to move point P1 in this case will be described below.

[0063] In the example of FIG. 4, the operation unit 3 includes three faders F1 to F3. The fader F1 is a fader for adjusting the brightness of the red component of the candidate determined value of the first output ratio (i.e., the output value of the light-emitting unit 211a). The fader F2 is a fader for adjusting the brightness of the green component of the candidate determined value of the first output ratio (i.e., the output value of the light-emitting unit 211b). The fader F3 is a fader for adjusting the brightness of the blue component of the candidate determined value of the first output ratio (i.e., the output value of the light-emitting unit 211c). Each of the faders F1 to F3 has an adjustment knob F1a to F3a that can be moved up and down. When the adjustment knob F1s to F3s of each of the faders F1 to F3 is moved toward the H side, the brightness of the corresponding color component becomes brighter, and when the adjustment knob F1 to F3 of each of the faders F1 to F3 is moved toward the L side, the brightness of the corresponding color component becomes darker. By adjusting the up and down positions of the control knobs F1a to F3s of each of the faders F1 to F3, it is possible to individually adjust the brightness of the three color components (red, green, and blue) of the color specified by the candidate values ​​for the first output ratio. By adjusting the brightness of the three color components using the three faders F1 to F3, the user can move the position of point P1 on the chromaticity diagram G1 to the desired position. For example, to move the current point P1 even more toward pink, the user can move the control knobs F1a and F3a of the faders F1 and F3 further toward the H side, or move the control knob F2a of the fader F2 further toward the L side.

[0064] (3) Operation The operation of the lighting system 1 will be described with reference to FIG.

[0065] The user inputs a first operation into the operation unit 3, thereby inputting candidates for the first output ratio determination value into the lighting system 1 (S1). More specifically, by inputting the first operation into the operation unit 3, point P1 on the chromaticity diagram G1 displayed on the display unit 4 is moved to a desired point, and the desired color is specified by the position of point P1. Based on this specification, the control unit 6 calculates, using the chromaticity diagram G1, a combination (spectrum) of three color components (emission colors of the three predetermined light-emitting units 211a-211c) specified by three points Q1, Q2, and Q3 that reproduces the color specified by the position of point P1. The calculated spectrum of the three color components becomes the input candidates for the first output ratio determination value. Through the above calculation, the candidates for the first output ratio determination value are input into the lighting system 1. The control unit 6 then stores the calculated spectrum in the storage unit 5.

[0066] Then, the control unit 6 controls the lighting circuit 22 of the lighting device 2 so that the lighting device 2 emits illumination light having the color specified by the candidate for the determined value of the first output ratio input in step S1 (S2). The user can confirm the color (light color) specified by the candidate for the determined value of the first output ratio input by actually looking at the light color of the illumination light from the lighting device 2.

[0067] Then, the user inputs a second operation into the operation unit 3 to determine the candidate for the determined value of the first output ratio, which is specified by the position of point P1 on the chromaticity diagram G1, as the determined value of the first output ratio (S3). With this determination, the determined value of the first output ratio is input to the lighting system 1.

[0068] Then, when the determined value of the first output ratio is input to the lighting system 1, the control unit 6 uses the chromaticity diagram G1 to obtain color numerical value data of the color specified by the input determined value of the first output ratio, and stores the obtained color numerical value data in the memory unit 5 (S4).

[0069] Furthermore, the user selects a predetermined rendering condition from among a plurality of rendering conditions by inputting a third operation into the operation unit 3 (S5).

[0070] Then, the control unit 6 extracts one or more second output ratios that reproduce the color specified by the color numerical value data acquired in step S4 (i.e., the color specified by the determined value of the first output ratio input in step S3) from among all the second output ratios that the four or more light-emitting units 211a to 211d can have (S6).

[0071] Then, the control unit 6 calculates the numerical value of the evaluation index corresponding to the predetermined rendering condition selected in step S5 for one or more second output ratios extracted in step S6 (S7).

[0072] Then, control unit 6 selects, from the one or more first output values ​​extracted in step S6, a first output value whose evaluation index value calculated in step S7 matches the required value of the evaluation index required for the predetermined rendering condition (S8). Control unit 6 then determines the selected second output ratio as the second output ratio that reproduces the color specified by the determined value of the first output ratio and matches the predetermined rendering condition. Control unit 6 then stores the determined second output ratio in memory unit 5.

[0073] Then, the control unit 6 controls the lighting circuit 22 of the lighting device 2 so that the second output ratios of the four or more light-emitting units 211a to 211d become the second output ratios determined in step S8. As a result, illumination light that reproduces the color specified by the determined value of the first output ratio input in step S3 and has a spectrum that matches the predetermined rendering conditions selected in step S5 is emitted from the lighting device 2 (S9).

[0074] (4) Effects The lighting system 1 according to this embodiment emits, as illumination light, combined light from four or more light-emitting units 211a to 211d that emit light of different colors. The lighting system 1 includes the four or more light-emitting units 211a to 211d, a lighting circuit 22, a lighting control unit 62, an operation unit 3, and a determination unit 64. The lighting circuit 22 turns on the four or more light-emitting units 211a to 211d. The lighting control unit 62 controls the lighting circuit 22. The operation unit 3 accepts an operation for inputting, to the lighting system 1, determined values ​​of first output ratios for three of the four or more light-emitting units 211a to 211d (i.e., 211a to 211c). The determination unit 64 determines second output ratios for the four or more light-emitting units 211a to 211d that reproduce a color specified by the determined value of the first output ratio input to the operation unit 3 and that are compatible with predetermined rendering conditions. The lighting control unit 62 controls the lighting circuit 22 based on the second output ratio determined by the determination unit 64 so that four or more light-emitting units 211a to 211d are lit.

[0075] According to this configuration, by inputting the determined values ​​of the first output ratios of the three light-emitting elements 211a-211c to the lighting system 1 through an input operation on the operation unit 3, the light color of the illumination light of the lighting system 1 can be easily determined as the color specified by the determined values ​​of the first output ratio. Then, the determination unit 64 determines second output ratios of the four or more light-emitting elements 211a-211d that reproduce the color specified by the determined values ​​of the first output ratio and that are compatible with predetermined rendering conditions, and the lighting control unit 62 controls the lighting circuit 22 to light up the four or more light-emitting elements 211a-211d based on the second output ratios determined by the determination unit 64. In other words, by inputting the determined values ​​of the first output ratios, the user can easily adjust the second output ratios of the four or more light-emitting elements 211a-211d to second output ratios that are compatible with predetermined rendering conditions, in a light color desired by the user.

[0076] Furthermore, in the lighting system 1 according to this embodiment, the determination unit 64 determines one or more second output ratios that reproduce the specified color. The determination unit 64 selects a second output ratio that satisfies the predetermined rendering conditions from the one or more determined second output ratios. The determination unit 64 determines the selected second output ratio as the second output ratio that reproduces the specified color and satisfies the predetermined rendering conditions. With this configuration, one or more second output ratios that reproduce the specified color are first determined, then a first output ratio that satisfies the predetermined rendering conditions is selected from the one or more determined second output ratios, and the selected first output ratio is determined as the second output ratio that reproduces the specified color and satisfies the predetermined rendering conditions. This reduces the processing load on the determination unit 64, making it possible to determine a second output ratio that reproduces the specified color and satisfies the predetermined rendering conditions.

[0077] Furthermore, in the lighting system 1 according to this embodiment, the operation unit 3 accepts an operation for inputting candidates for the determined value of the first output ratio to the lighting system 1. The lighting control unit 62 controls the lighting circuit 22 so that the three light-emitting units 211a to 211c light up based on the candidates input to the operation unit 3. With this configuration, the light color specified by the candidates for the determined value of the first output ratio input by an input operation to the operation unit 3 can be confirmed by looking at the light color of the actual illumination light emitted by the lighting device 2.

[0078] Furthermore, in the lighting system 1 according to this embodiment, the three light-emitting units 211a to 211c include the light-emitting unit 211a that emits red light, the light-emitting unit 211b that emits green light, and the light-emitting unit 211c that emits blue light. With this configuration, the value of the first output ratio can be determined using the three light-emitting units 211a to 211c that correspond to the three primary colors RGB. This makes it possible to easily determine the value of the first output ratio.

[0079] The lighting system 1 according to this embodiment further includes a storage unit 5 that stores a plurality of rendering conditions. The operation unit 3 accepts an operation for selecting a predetermined rendering condition from the plurality of rendering conditions. With this configuration, the user can select a desired rendering condition from the plurality of rendering conditions as the predetermined rendering condition.

[0080] Furthermore, in the lighting system 1 according to this embodiment, the four or more light-emitting units 211a to 211d are included in one lighting device 2. This configuration can improve the color uniformity of the light color of the combined light from the four or more light-emitting units 211a to 211d, thereby improving the dramatic effect of the illumination light.

[0081] (5) Aspects other than lighting systems The same functions as those of the lighting system 1 according to the above embodiment may be embodied as a lighting system control method, a computer program (program), or a non-transitory recording medium on which a computer program is recorded.

[0082] A lighting system control method according to one aspect is a method for controlling a lighting system that outputs, as illumination light, combined light from four or more light-emitting units that emit light of different colors. The lighting system control method includes a lighting control step, an operation step, and a determination step. The lighting control step controls a lighting circuit that lights up the four or more light-emitting units. The operation step accepts an operation for inputting determined values ​​of first output ratios of three of the four or more light-emitting units to the lighting system. The determination step determines second output ratios for the four or more light-emitting units that reproduce a color specified by the determined values ​​of the first output ratios input in the operation step and that are compatible with predetermined rendering conditions. The lighting control step controls the lighting circuit so that the four or more light-emitting units are turned on based on the second output ratios determined in the determination step.

[0083] A program according to one aspect causes a computer system to execute the lighting system control method.

[0084] A non-transitory recording medium according to one embodiment temporarily records a program that causes a computer to execute the lighting system control method.

[0085] (6) Variations A modification of the above embodiment will be described. In the following description, the same components as those in the above embodiment will be denoted by the same reference numerals, and the description thereof may be omitted.

[0086] (6-1) Variation 1 In the above embodiment, the operation unit 3 includes three faders F1 to F3. In contrast, in Modification 1, as shown in FIG. 6, the operation unit 3 includes four operation keys K1 to K4. The operation keys K1, K2, K3, and K4 are operation keys for moving point P1 on the chromaticity diagram G1 to the positive y-axis, the negative y-axis, the positive x-axis, and the negative x-axis of the chromaticity diagram G1, respectively. When each operation key K1 to K4 is pressed, point P1 on the chromaticity diagram G1 moves in each direction of the chromaticity diagram G1 (the positive y-axis, the negative y-axis, the positive x-axis, and the negative x-axis) for the duration of the press. Modification 1 allows candidates for the determined value of the first output ratio to be easily input to the lighting system 1.

[0087] (6-2) Variation 2 As shown in FIG. 7, the lighting system 1 according to the second modification is configured in the same manner as the lighting system 1 according to the above embodiment, except that it further includes a processing device 7 having the function of communicating with the control unit 6, and the determination unit 64 is relocated from the control unit 6 to the processing device 7.

[0088] (6-2-1) Configuration 7, in Modification 2, the control unit 6 includes a display control unit 61, a lighting control unit 62, a processing unit 63, and a first communication unit 65. The display control unit 61, the lighting control unit 62, and the processing unit 63 are the same as the lighting control unit 62 and the processing unit 63 in the embodiment.

[0089] The first communication unit 65 communicates with a second communication unit 71 (described later) of the processing device 7 via a wired or wireless method. The first communication unit 65 communicates using a network such as a mobile phone network or an internet network. The first communication unit 65 transmits color information and predetermined rendering conditions to a second communication unit 71 (described later) of the processing device 7. The color information is information about a color specified by the determined value of the first output ratio input by a second operation. The color information is, for example, color numerical value data acquired by the processing unit 63. The predetermined rendering conditions are rendering conditions selected by a third operation. The first communication unit 65 receives a second output ratio (described later) determined by the determination unit 64 from a second communication unit 71 (described later) of the processing device 7.

[0090] The lighting control unit 62 controls the lighting circuit 22 of the lighting device 2 based on the second output ratio received by the first communication unit 65 so that four or more light-emitting units 211a to 211d are turned on.

[0091] The processing device 7 is, for example, a server. The processing device 7 includes a second communication unit 71 and a determination unit 64.

[0092] The second communication unit 71 communicates with the first communication unit 65 via a wired or wireless method. The second communication unit 71 receives the color information and the predetermined rendering conditions from the first communication unit 65. In addition, the second communication unit 71 transmits a second output ratio (described below) determined by the determination unit 64 to the first communication unit 65.

[0093] The determination unit 64 is configured in the same manner as the determination unit 64 of the embodiment. The determination unit 64 determines second output ratios for the four or more light-emitting units 211a to 211d, which are output ratios that reproduce the color specified by the color information received by the second communication unit 71 and that are compatible with the predetermined rendering conditions received by the second communication unit 71.

[0094] (6-2-2) Operation The operation of the lighting system 1 according to the second modification will be described with reference to FIG.

[0095] The operation of the lighting system 1 according to the second modification is the same as the operation of the lighting system 1 according to the embodiment, except that transmission and reception of information (color information, predetermined rendering conditions, second output ratio) between the first communication unit 65 and the second communication unit 71 is added. Therefore, the following description will focus on the operations of the first communication unit 65 and the second communication unit 71.

[0096] In the second modification, similar to the embodiment, when the control unit 6 acquires color numerical value data and a predetermined rendering condition is selected by the third operation, the control unit 6 transmits the acquired color numerical value data (color information) and the selected predetermined rendering condition from the first communication unit 65 to the second communication unit 71 of the processing device 7. Then, when the second communication unit 71 receives the color numerical value data and the predetermined rendering condition from the first communication unit 65, the determination unit 64 of the processing device 7 determines a second output ratio that reproduces the color specified by the color numerical value data and conforms to the predetermined rendering condition, based on the color specified by the received color numerical value data and the received predetermined rendering condition, similar to the determination unit 64 of the embodiment. Then, the processing device 7 transmits the determined second output ratio from the second communication unit 71 to the first communication unit 65 of the control unit 6. Then, when the first communication unit 65 of the control unit 6 receives the second output ratio from the second communication unit 71, the lighting control unit 62 of the control unit 6 controls the lighting circuit 22 to light up the four light-emitting units 211a to 211d based on the received second output ratio. By this control, as in the above embodiment, illumination light that reproduces the color specified by the color numerical data and has a spectrum that matches the predetermined rendering conditions is emitted from the illumination device 2.

[0097] (6-2-3) Effects The lighting system 1 according to the second modification includes a control unit 6 and a processing device 7. The control unit 6 includes a lighting control unit 62 and a first communication unit 65. The first communication unit 65 communicates with the processing device 7. The first communication unit 65 transmits color information about a color specified by the input determined value of the first output ratio to the processing device 7. The processing device 7 includes a second communication unit 71 and a determination unit 64. The second communication unit 71 communicates with the first communication unit 65. The determination unit 64 determines second output ratios for the four or more light-emitting units 211a to 211d, which are output ratios that reproduce the color specified by the color information received by the second communication unit 71 and that meet predetermined rendering conditions. The second communication unit 71 transmits the second output ratios determined by the determination unit 64 to the first communication unit 65. The lighting control unit 62 controls the lighting circuit 22 based on the second output ratios received by the first communication unit 65 so that the four or more light-emitting units 211a to 211d are turned on. According to this configuration, the determination unit 64 can be provided in the processing device 7 that is communicatively connected to the control unit 6, thereby improving the processing capacity of the determination unit 64. As a result, it is possible to determine a second output ratio that is more suited to predetermined rendering conditions.

[0098] (6-3) Variation 3 (6-3-1) Configuration As shown in FIG. 8, the lighting system 1 of variant example 3 is configured in the same manner as the lighting system 1 of the above embodiment, except that it further includes an imaging unit 8 and a selection unit 66, and the selection unit 66 automatically selects predetermined performance conditions based on image data acquired by the imaging unit 8.

[0099] The lighting system 1 of the third modification further includes an imaging unit 8 in addition to the lighting system 1 of the above embodiment. The control unit 6 further includes a selection unit 66 in addition to the control unit 6 of the above embodiment.

[0100] The imaging unit 8 is positioned to capture an image of an area illuminated by the illumination light from the lighting device 2 (i.e., the combined light from the four or more light-emitting units 211a to 211d) (for example, an area where an illumination target (performer) is present on a stage). Therefore, the image data acquired by the imaging unit 8 includes the illumination target (performer) present in the area illuminated by the illumination light from the lighting device 2. The imaging unit 8 includes an imaging element (for example, a CCD (Charge Coupled Device)) and a condenser lens. The imaging unit 8 acquires color image data. The imaging unit 8 may acquire image data of a still image or may acquire image data of a moving image.

[0101] The selection unit 66 extracts features from the image data acquired by the imaging unit 8. The features include a first feature and a second feature. The first feature is a feature indicating the proportion of skin-colored areas to the entire area of ​​the image acquired by the imaging unit 8. The second feature is a feature indicating the proportion of a specific primary color (e.g., red, blue, or yellow) area to the entire area of ​​the image acquired by the imaging unit 8.

[0102] The selection unit 66 selects a predetermined rendering condition from among a plurality of rendering conditions based on the extracted feature amount. The plurality of rendering conditions include a first rendering condition, a second rendering condition, and a third rendering condition, as in the embodiment. The first rendering condition is, for example, a rendering condition in which the skin of the performer (illumination target) illuminated by the illumination light from the lighting device 2 looks beautiful. The second rendering condition is, for example, a rendering condition in which the color of the costume of the performer (illumination target) illuminated by the illumination light from the lighting device 2 looks vivid. The third rendering condition is, for example, a rendering condition in which the illumination light reproduces natural light.

[0103] If the extracted first feature amount is equal to or greater than a first threshold, the selection unit 66 selects the first rendering condition from among the multiple rendering conditions. That is, if the image contains a certain percentage or more of a skin-colored area, the selection unit 66 selects the first rendering condition so that the skin looks beautiful. Furthermore, if the extracted second extraction amount is equal to or greater than a second threshold, the selection unit 66 selects the third rendering condition from among the multiple rendering conditions. That is, if the image contains a certain percentage or more of a primary-colored area, the image is considered to include a performer wearing a colorful costume, and therefore the selection unit 66 selects the second rendering condition so that the costume looks vivid. Furthermore, if the extracted first feature amount is less than the first threshold and the extracted second feature amount is less than the second threshold, the selection unit 66 selects the third rendering condition.

[0104] The determination unit 64 of the third modification determines the second output ratio using the predetermined rendering condition selected by the selection unit 66, instead of using the predetermined rendering condition selected by the third operation. That is, the determination unit 64 determines the second output ratio that reproduces the color specified by the determined value of the first output ratio input by the second operation and that is compatible with the predetermined rendering condition selected by the selection unit 66.

[0105] (6-3-2) Operation The operation of lighting system 1 according to Modification 3 will be described with reference to Fig. 9. The following explanation will focus on the operation when selection unit 66 selects predetermined rendering information from a plurality of rendering conditions based on the feature amount of image data.

[0106] The selection unit 66 extracts feature amounts (first feature amount and second feature amount) from the image data acquired by the imaging unit 8 (S11). Then, the selection unit 66 determines whether the extracted first feature amount is equal to or greater than a first threshold (S12). If the determination result is that the first feature amount is equal to or greater than the first threshold (S12: Yes), the selection unit 66 selects a first rendering condition (S13). Then, the processing ends. If the determination result in step S12 is that the first feature amount is less than the first threshold (S12: No), the selection unit 66 determines whether the extracted second feature amount is equal to or greater than a second threshold (S14). If the determination result is that the second feature amount is equal to or greater than the second threshold (S14: Yes), the selection unit 66 selects a second rendering condition (S15). Then, the processing ends. Furthermore, if the determination result in step S14 is that the second feature amount is less than the second threshold value (S14: No), the selection unit 66 selects the third rendering condition (S16), and the process then ends.

[0107] (6-3-3) Effects The lighting system 1 according to the third modification includes a storage unit 5, an imaging unit 8, and a selection unit 66. The storage unit 5 stores a plurality of rendering conditions. The imaging unit 8 acquires image data including an illumination target present within an area illuminated by the combined light of four or more light-emitting units 211a to 211d. The selection unit 66 selects a predetermined rendering condition from among a plurality of rendering conditions based on the feature amount of the acquired image data. With this configuration, it is possible to automatically set an appropriate rendering condition as the predetermined rendering condition according to the illumination target present on the stage.

[0108] (6-4) Variation 4 (6-4-1) Configuration As shown in FIG. 10, the lighting system 1 according to the fourth modification is configured similarly to the lighting system 1 according to the above embodiment, except that it further includes a correction unit 67 and measurement units 212a to 212d, and the correction unit 67 corrects the output values ​​of the light-emitting units 211a to 211d based on the measurement results of the measurement units 212a to 212d.

[0109] The illumination device 2 of Modification 4 is the illumination device 2 of the above embodiment, further including four or more (four in the example of FIG. 10) measurement units 212a-212d. The four or more measurement units 212a-212d are the same in number as the number of light-emitting units 211a-211d (four or more). The control unit 6 of Modification 4 is the control unit 6 of the above embodiment, further including a correction unit 67.

[0110] The four or more measurement units 212a to 212d correspond one-to-one to the four or more light-emitting units 211a to 211d. The measurement units 212a to 212d measure the output values ​​(amounts of radiation) of the corresponding light-emitting units 211a to 211d and output the measurement results to a correction unit 67 (described below) of the control unit 6. The four or more measurement units 212a to 212d include light-receiving units that receive light emitted by the corresponding light-emitting units 211a to 211d.

[0111] The correction unit 67 calculates correction coefficients Na, Nb, and Nd for correcting the output values ​​of the light-emitting units 211a, 211b, and 211d based on the measurement results of the measurement units 212a to 212d.

[0112] More specifically, in the initial state of the lighting system 1, the correction unit 67 first turns on each of the light-emitting units 211a to 211d based on a predetermined input value (e.g., a current value) for each of the light-emitting units 211a to 211d via the lighting control unit 62. Then, the correction unit 67 causes the measurement units 212a to 212d to measure the output values ​​of the light-emitting units 211a to 211d when they are turned on. Then, based on the measurement results, the correction unit 67 calculates initial setting values ​​for the ratios Ma, Mb, and Md of the output value of the second light-emitting units 211a, 211b, and 211d to the output value of the first light-emitting unit 211c, for the second light-emitting units 211a, 211b, and 211d other than the first light-emitting unit (e.g., light-emitting unit 211c) that serve as a reference, among the four or more light-emitting units 211a to 211d. The ratio Mi (i=a, b, d) is the ratio of the output value of the light-emitting element 211i to the output value of the light-emitting element 211c.

[0113] For example, in the initial state of the lighting system 1, if the output value of each of the light-emitting units 211a to 211d is 100 [mA] when a current of 100 [mA] is input to each of the light-emitting units 211a to 211d as the above-mentioned predetermined input value, the initial setting values ​​of the ratios Ma, Mb, and Md will each be "1".

[0114] After a certain time has elapsed since the initial state of the lighting system 1, the correction unit 67 causes each of the light-emitting units 211a-211d to light up again based on the predetermined input value (e.g., current value) via the lighting control unit 62. Then, the correction unit 67 causes each of the measurement units 212a-212d to measure the output values ​​of the light-emitting units 211a-211d when they are turned on. Then, the correction unit 67 calculates the ratios Ma, Mb, Md after the certain time has elapsed based on the measurement results.

[0115] For example, after a certain time has elapsed from the initial state of the lighting system 1, when a current of 100 [mA] is input to each of the light-emitting units 211a to 211d as the above-mentioned predetermined input value, if the output value of the light-emitting unit 211a is 50 [mA] and the output values ​​of the light-emitting units 211b and 211d are each 100 [mA], the ratio Ma will be "0.5" and the ratios Mb and Md will be "1".

[0116] Then, the correction unit 67 determines whether or not the ratio Mi (i=a, b, d) after the lapse of a certain time period matches the initial setting value of the ratio Mi. If the ratio Mi after the lapse of a certain time period does not match the initial setting value of the ratio Mi, the correction unit 67 calculates a correction coefficient Ni for making the ratio Mi after the lapse of a certain time period match the initial setting value of the ratio Mi.

[0117] For example, since the ratio Ma after a certain time has elapsed is "0.5" and the initial setting value of the ratio Ma is "1", in order to make the ratio Ma (="0.5") after a certain time have elapsed equal the initial setting value of the ratio Ma (="1"), the ratio Ma after a certain time have elapsed must be doubled. Therefore, the correction coefficient Na for making the ratio Ma after a certain time have elapsed equal the initial setting value of the ratio Ma is 2.

[0118] The lighting control unit 62 calculates the correction coefficient Ni for making the ratio Mi (i=a, b, d) after a certain time has elapsed equal to the initial setting value of the ratio Mi, and when lighting the light-emitting unit 211i via the lighting control unit 62, corrects the current value Ii of the current input to the light-emitting unit 211i to a current value (Mi×Ii) multiplied by the correction coefficient Ni. Then, the lighting control unit 62 inputs the corrected current value (Mi×Ii) to the light-emitting unit 211i to light up the light-emitting unit 211i. This improves the deterioration of the output value of the light-emitting unit 211i.

[0119] (6-4-2) Effects The lighting system 1 according to the fourth modification further includes measurement units 212a-212d and a correction unit 67. The measurement units 212a-212d measure the output values ​​of each of the four or more light-emitting units 211a-211d. The correction unit 67 calculates correction coefficients Na, Nb, and Nd for correcting the output values ​​of each of the four or more light-emitting units 211a-211d based on the measurement results of the measurement units 212a-212d. The measurement units 212a-212d measure the output values ​​of each of the four or more light-emitting units 211a-211d when the four or more light-emitting units 211a-211d are turned on based on a predetermined input value. The correction unit 67 calculates ratios Ma, Mb, and Md of the output values ​​of the second light-emitting units 211a, 211b, and 211d to the output value of the first light-emitting unit 211c, which are the second light-emitting units 211a, 211b, and 211d other than the first light-emitting unit 211c, among the four or more light-emitting units 211a-211d, and if the calculated ratios Ma, Mb, and Md do not match the initial setting values ​​of the ratios Ma, Mb, and Md, calculates correction coefficients Na, Nb, and Nd for matching the calculated ratios Ma, Mb, and Md to the initial setting values. When lighting the second light-emitting units 211a, 211b, and 211d, the lighting control unit 62 controls the lighting circuit 22 so that the second light-emitting units 211a, 211b, and 211d are lighted based on the input values ​​corrected by the correction coefficients Na, Nb, and Nd. According to this configuration, even if the degree of deterioration of the output differs among the light-emitting units 211a to 211d due to, for example, aging, the correction unit 67 can reduce the difference in the degree of deterioration.

[0120] (6-5) Variation 5 (6-5-1) Configuration As shown in FIG. 11, the lighting system 1 according to the fifth modification is configured in the same manner as the lighting system 1 according to the above embodiment, except that the four or more light-emitting units 211a to 211d are included in different lighting devices 2a to 2d.

[0121] As shown in FIG. 11, the lighting system 1 according to the fifth modification includes four or more (four in the example of FIG. 11) lighting devices 2a to 2d instead of the lighting device 2 in the lighting system 1 according to the above embodiment.

[0122] The lighting devices 2a to 2d include light emitting units 211a to 211d and lighting circuits 22a to 22d.

[0123] The light emitting sections 211a to 211d are configured in the same manner as the light emitting sections 211a to 211d of the above embodiment. The light emitting sections 211a to 211d are included in different lighting devices 2a to 2d.

[0124] The lighting circuits 22a to 22d are configured in the same manner as the lighting circuit 22 in the above embodiment. The lighting circuits 22a to 22d are included in different lighting devices 2a to 2d, and control the light emission of the light-emitting units 211a to 211d included in the same lighting devices 2a to 2d based on the control of the lighting control unit 62 of the control unit 6. The combined light of the four or more lighting devices 2a to 2d becomes the illumination light of the lighting system 1. In other words, the four or more lighting devices 2a to 2d irradiate the illumination light to the same range.

[0125] (6-5-2) Effects In the lighting system 1 according to the fifth modification, the four or more light-emitting units 211a-211d are included in different lighting devices 2a-2d, respectively. With this configuration, the combination of the four or more light-emitting units 211a-211d can be easily changed by replacing the lighting devices 2a-2d.

[0126] (6-6) Variation 6 (6-6-1) Configuration As shown in FIG. 12, the lighting system 1 according to the sixth modification is configured similarly to the lighting system 1 according to the above embodiment, except that at least two of the four or more light-emitting units 211a to 211d (three light-emitting units 211a to 211c in the example of FIG. 12) are included in one lighting device 2p, and the remaining light-emitting units 211d are in one-to-one correspondence with lighting devices 2q, the same number as the remaining light-emitting units 211d, which are separate from the one lighting device 2p, and are included in the corresponding lighting devices 2q.

[0127] As shown in FIG. 12, the lighting system 1 according to the sixth modification includes a plurality of (for example, two) lighting devices 2p and 2q instead of the lighting device 2 in the lighting system 1 according to the above embodiment.

[0128] The lighting device 2p includes a light-emitting module 21 and a lighting circuit 22p.

[0129] The light-emitting module 21 includes light-emitting units 211a to 211c and a mounting substrate. The light-emitting units 211a to 211c are configured in the same manner as the light-emitting units 211a to 211c of the above embodiment. The light-emitting units 211a to 211c are mounted on the mounting substrate. That is, the light-emitting units 211a to 211c are mounted on the same mounting substrate. The lighting circuit 22p is configured in the same manner as the lighting circuit 22 of the above embodiment. The lighting circuit 22p controls the light emission of the light-emitting units 211a to 211c included in the same lighting device 2p based on the control of the lighting control unit 62 of the control unit 6.

[0130] The lighting device 2q includes a light-emitting unit 211d and a lighting circuit 22q. The light-emitting unit 211d has a configuration similar to that of the light-emitting unit 211d in the above embodiment. The lighting circuit 22q has a configuration similar to that of the lighting circuit 22 in the above embodiment. The lighting circuit 22q controls the light emission of the light-emitting unit 211d included in the same lighting device 2q based on the control of the lighting control unit 62 of the control unit 6.

[0131] The lighting device 2p emits the combined light of the light-emitting units 211a to 211c as illumination light. The lighting device 2q emits the light emitted by the light-emitting unit 211d as illumination light. The combined light of the multiple lighting devices 2p and 2q becomes the illumination light of the lighting system 1. In other words, the multiple lighting devices 2p and 2q irradiate the illumination light onto the same range.

[0132] (6-6-2) Effects In the lighting system 1 according to the sixth modification, of the four or more light-emitting units 211a-211d, at least two of the light-emitting units 211a-211c are included in a single lighting device 2p, and the remaining light-emitting unit 211d is included in a lighting device 2q that is a different lighting device from the single lighting device 2p and has a one-to-one correspondence with the remaining light-emitting units 211d, and is included in the corresponding lighting device 2q. With this configuration, since at least two of the light-emitting units 211a-211c are included in a single lighting device 2p, the color uniformity of the light color of the combined light of the at least two light-emitting units 211a-211c can be improved. The remaining light-emitting unit 211d is included in a lighting device that is a different lighting device from the single lighting device 2p and has a one-to-one correspondence with the remaining light-emitting units 2q, and is included in the corresponding lighting device 2q. Therefore, the combination of the remaining light-emitting units 211a-211d can be easily changed by replacing the lighting devices 2p and 2q.

[0133] (6-7) Variation 7 In the above embodiment, the lighting system 1 includes a red light-emitting unit, a green light-emitting unit, a blue light-emitting unit, and a cyan light-emitting unit as examples of four or more light-emitting units. However, the lighting system 1 may include a white light-emitting unit or a yellow light-emitting unit instead of the cyan light-emitting unit. Furthermore, the lighting system 1 may further include at least one of a white light-emitting unit and a yellow light-emitting unit in addition to the cyan light-emitting unit.

[0134] (6-8) Variation 8 5, step S5 (i.e., the step in which the user selects a predetermined rendering condition) is performed after step 4 (i.e., the step in which the color (light color) specified by the determined value of the first output value is converted into color numerical data). However, step S5 may be performed before step S1 (i.e., the step in which the user inputs candidates for the determined value of the first output value to the lighting system 1). In this case, the operation of the lighting system 1 is in the order of step S5 → step S1 → step S2 → step S3 → step S4 → step S6 → step S7 → step S8 → step S9.

[0135] The above embodiment and modifications 1 to 8 may be combined.

[0136] (7) Mode The present specification discloses the following aspects.

[0137] The lighting system (1) of the first aspect emits, as illumination light, synthesized light from four or more light-emitting units (211a to 211d) that emit light of different colors. The lighting system (1) includes four or more light-emitting units (211a to 211d), lighting circuits (22; 22a to 22d; 22p, 22q), a lighting control unit (62), an operation unit (3), and a determination unit (64). The lighting circuits (22; 22a to 22d; 22p, 22q) light up the four or more light-emitting units (211a to 211d). The lighting control unit (62) controls the lighting circuits (22; 22a to 22d; 22p, 22q). The operation unit (3) accepts an operation for inputting the determined values ​​of the first output ratios of three of the four or more light-emitting units (211a to 211d) to the lighting system (1). The determination unit (64) determines second output ratios of the four or more light-emitting units (211a to 211d), which are output ratios that reproduce a color specified by the determined values ​​of the first output ratios input to the operation unit (3) and that are compatible with predetermined rendering conditions. The lighting control unit (62) controls the lighting circuits (22; 22a to 22d; 22p, 22q) based on the second output ratios determined by the determination unit (64) so ​​that the four or more light-emitting units (211a to 211d) are turned on.

[0138] According to this configuration, by inputting the determined values ​​of the first output ratios of the three predetermined light-emitting elements (211a to 211c) into the lighting system (1) through an input operation on the operation unit (3), the light color of the illumination light of the lighting system (1) can be easily determined as the color specified by the determined values ​​of the first output ratios. Then, the determination unit (64) determines second output ratios of the four or more light-emitting elements (211a to 211d) that reproduce the color specified by the determined values ​​of the first output ratios and that are compatible with predetermined performance conditions, and the lighting control unit (62) controls the lighting circuits (22; 22a to 22d; 22p, 22q) so that the four or more light-emitting elements (211a to 211d) light up based on the second output ratios determined by the determination unit (64). In other words, by inputting the determined value of the first output ratio, the user can easily adjust the second output ratio of four or more light-emitting units (211a to 211d) to a second output ratio that conforms to the specified rendering conditions in the light color desired by the user.

[0139] The lighting system (1) of the second aspect is the same as the lighting system (1) of the first aspect, and includes a control unit (6) and a processing device (7). The control unit (6) includes a lighting control unit (62) and a first communication unit (65). The first communication unit (65) communicates with the processing device (7). The first communication unit (65) transmits color information about a color specified by a determined value of the first output ratio input to the operation unit (3) to the processing device (7). The processing device (7) includes a second communication unit (71) and a determination unit (64). The second communication unit (71) communicates with the first communication unit (65). The determination unit (64) determines second output ratios of the four or more light-emitting units (211a to 211d) that reproduce the color specified by the color information received by the second communication unit (71) and that meet predetermined rendering conditions. The second communication unit (71) transmits the second output ratio determined by the determination unit (64) to the first communication unit (65). The lighting control unit (62) controls the lighting circuits (22; 22a to 22d; 22p, 22q) based on the second output ratio received by the first communication unit (65) so that four or more light-emitting units (211a to 211d) are turned on.

[0140] According to this configuration, the determining unit 64 can be included in the processing device 7 that is communicatively connected to the control unit 6, thereby improving the processing capacity of the determining unit 64. As a result, the second output ratio that is more suited to the predetermined rendering conditions can be determined.

[0141] In the lighting system (1) of the third aspect, in the first or second aspect, the determination unit (64) determines one or more second output ratios that reproduce a specified color. The determination unit (64) selects a second output ratio that meets predetermined rendering conditions from the determined one or more second output ratios. The determination unit (64) determines the selected second output ratio as the second output ratio that reproduces the specified color and meets the predetermined rendering conditions.

[0142] According to this configuration, one or more second output ratios that reproduce the specified color are first obtained, then one first output ratio that meets the predetermined rendering conditions is selected from the one or more obtained second output ratios, and the selected one first output ratio is determined as the second output ratio that reproduces the specified color and meets the predetermined rendering conditions. This reduces the processing load on the determination unit (64) and makes it possible to determine the second output ratio that reproduces the specified color and meets the predetermined rendering conditions.

[0143] In the lighting system (1) of the fourth aspect, in any one of the first to third aspects, the operation unit (3) accepts an operation for inputting candidates for the determined value of the first output ratio to the lighting system (1). The lighting control unit (62) controls the lighting circuits (22; 22a to 22d; 22p, 22q) based on the candidates input to the operation unit (3) so that the three light-emitting units (211a to 211c) are turned on.

[0144] According to this configuration, the light color designated by the candidate determined value of the first output ratio input by input operation to the operation unit (3) can be confirmed by looking at the light color of the actual illumination light of the lighting devices (2; 2a to 2d; 2p, 2q).

[0145] In the lighting system (1) of the fifth aspect, in any one of the first to fourth aspects, the three light-emitting units (211a to 211c) include a light-emitting unit (211a) that emits red light, a light-emitting unit (211b) that emits green light, and a light-emitting unit (211c) that emits blue light.

[0146] According to this configuration, the value of the first output ratio can be determined using three light-emitting elements (211a to 211c) corresponding to the three primary colors (RGB), which makes it possible to easily determine the value of the first output ratio.

[0147] The lighting system (1) of a sixth aspect is any one of the first to fifth aspects, further comprising a storage unit (5) that stores a plurality of rendering conditions. The operation unit (3) accepts an operation for selecting a predetermined rendering condition from the plurality of rendering conditions.

[0148] According to this configuration, the user can select a desired rendering condition from among a plurality of rendering conditions as the predetermined rendering condition.

[0149] The lighting system (1) of a seventh aspect is any one of the first to fifth aspects, and further includes a storage unit (5), an imaging unit (8), and a selection unit (66). The storage unit (5) stores a plurality of rendering conditions. The imaging unit (8) acquires image data including an illumination target present in an area illuminated by the combined light of four or more light-emitting units (211a to 211d). The selection unit (66) selects a predetermined rendering condition from the plurality of rendering conditions based on a feature amount of the image data acquired by the imaging unit (8).

[0150] According to this configuration, appropriate performance conditions can be automatically set as predetermined performance conditions in accordance with the lighting targets present on the stage.

[0151] The lighting system (1) of an eighth aspect is any one of the first to seventh aspects, and further includes measurement units (212a to 212d) and a correction unit (67). The measurement units (212a to 212d) measure the output values ​​of each of the four or more light-emitting units (211a to 211d). The correction unit (67) calculates correction coefficients (Na, Nb, Nd) for correcting the output values ​​of each of the four or more light-emitting units (211a to 211d) based on the measurement results of the measurement units (212a to 212d). The measurement units (212a to 212d) measure the output values ​​of each of the four or more light-emitting units (211a to 211d) when the four or more light-emitting units (211a to 211d) are turned on based on a predetermined input value. The correction unit (67) calculates the ratios (Ma, Mb, Md) of the output values ​​of the second light-emitting units (211a, 211b, 211d) to the output value of the first light-emitting unit (211c) for the second light-emitting units (211a, 211b, 211d) other than the first light-emitting unit (211c) that is the reference among the four or more light-emitting units (211a to 211d), and if the calculated ratios (Ma, Mb, Md) do not match the initial setting values ​​of the ratios (Ma, Mb, Md), it calculates correction coefficients (Na, Nb, Nd) to make the calculated ratios (Ma, Mb, Md) match the initial setting values. When lighting the second light-emitting units (211a, 211b, 211d), the lighting control unit (62) controls the lighting circuit (22) so that the second light-emitting units (211a, 211b, 211d) are lighted based on the input values ​​corrected by the correction coefficients (Na, Nb, Nd).

[0152] According to this configuration, even if the degree of deterioration of the output differs among the light-emitting units (211a to 211d) due to, for example, aging, the correction unit (67) can reduce the difference in the degree of deterioration.

[0153] In the lighting system (1) of the ninth aspect, in any one of the first to eighth aspects, four or more light-emitting sections (211a to 211d) are included in one lighting device (2).

[0154] This configuration can improve the color uniformity of the light color of the combined light from the four or more light-emitting elements (211a to 211d), thereby improving the dramatic effect of the illumination light.

[0155] In the lighting system (1) of the tenth aspect, in any one of the first to eighth aspects, the four or more light-emitting units (211a to 211d) are included in different lighting devices (2a to 2d), respectively.

[0156] According to this configuration, by replacing the lighting devices (2a to 2d), the combination of four or more light-emitting parts (211a to 211d) can be easily changed.

[0157] In the lighting system (1) of the eleventh aspect, in any one of the first to eighth aspects, of the four or more light-emitting units (211a to 211d), at least two light-emitting units (211a to 211c) are included in one lighting device (2p), and the remaining light-emitting unit (211d) is a lighting device other than the one lighting device (2p) that corresponds one-to-one to lighting devices (2q) of the same number as the remaining light-emitting units (211d), and is included in the corresponding lighting device (2q).

[0158] According to this configuration, at least two light-emitting units (211a-211c) are included in one lighting device (2p), which can improve the color uniformity of the light color of the combined light of the at least two light-emitting units (211a-211c). The remaining light-emitting unit (211d) is a lighting device other than the one lighting device (2p) and corresponds one-to-one to the same number of lighting devices (2q) as the remaining light-emitting units (211d), and is included in the corresponding lighting device (2q). Therefore, by replacing the lighting devices (2p, 2q), the combination of the remaining light-emitting units (211d) can be easily changed.

[0159] A control method for a lighting system (1) according to a twelfth aspect is a control method for a lighting system (1) that outputs, as illumination light, synthesized light from four or more light-emitting units (211a to 211d) that emit light of different colors. The control method for the lighting system (1) includes a lighting control step, an operation step, and a determination step. The lighting control step controls lighting circuits (22; 22a to 22d; 22p, 22q) that turn on the four or more light-emitting units (211a to 211d). The operation step accepts an operation for inputting, to the lighting system (1), determined values ​​of first output ratios of three light-emitting units (211a to 211c) of the four or more light-emitting units (211a to 211d). The determination step determines second output ratios of the four or more light-emitting units (211a to 211d) that reproduce a color specified by the determined value of the first output ratio input in the operation step and that are output ratios that comply with predetermined rendering conditions. The lighting control step controls the lighting circuits (22; 22a to 22d; 22p, 22q) so that four or more light-emitting units (211a to 211d) light up based on the second output ratio determined in the determination step.

[0160] According to this configuration, by inputting the determined value of the first output ratio, the user can easily adjust the second output ratio of the four or more light-emitting units (211a to 211d) to a second output ratio that meets the specified rendering conditions in the light color desired by the user.

[0161] A program according to a thirteenth aspect is a program for causing one or more processors to execute the method for controlling the lighting system (1) according to the twelfth aspect.

[0162] According to this configuration, it is possible to provide a program for causing one or more processors to execute the above-described method for controlling the lighting system (1). [Explanation of symbols]

[0163] 1. Lighting system 2,2a~2d,2p,2q lighting equipment 3 Control section 5 Storage section 6 Control Unit 7 Processing equipment 8. Imaging unit 22, 22a to 22d, 22p, 22q lighting circuit 62 Lighting control unit 64 Decision Section 65 First Communications Department 66 Selection section 67 Correction section 71 Second Communications Department 211a~211d Light-emitting part 212a~212d Measuring part Na, Nb, Nd correction factors Ma,Mb,Md ratio

Claims

1. A lighting system that emits, as illumination light, synthesized light from four or more light-emitting elements that emit light of different colors, comprising: the four or more light-emitting units; a lighting circuit for lighting the four or more light-emitting units; a lighting control unit that controls the lighting circuit; an operation unit configured to receive an operation for inputting determined values ​​of first output ratios of three of the four or more light-emitting units to the lighting system; a determination unit that determines second output ratios of the four or more light-emitting units, the second output ratios being output ratios that reproduce a color designated by the determined value of the first output ratio input to the operation unit and that conform to predetermined rendering conditions; the lighting control unit controls the lighting circuit so that the four or more light-emitting units are lit based on the second output ratio determined by the determination unit. Lighting system.

2. A control unit and a processing unit are provided, The control unit the lighting control unit; a first communication unit that communicates with the processing device, the first communication unit transmits color information regarding the color designated by the determined value of the first output ratio input to the operation unit to the processing device; The processing device includes: a second communication unit that communicates with the first communication unit; the determination unit, the determination unit determines the second output ratio of the four or more light-emitting units, the second output ratio being an output ratio that reproduces the color specified by the color information received by the second communication unit and conforms to the predetermined rendering condition; the second communication unit transmits the second output ratio determined by the determination unit to the first communication unit; the lighting control unit controls the lighting circuit so that the four or more light-emitting units are lit based on the second output ratio received by the first communication unit.

10. The lighting system of claim 1.

3. The determination unit determining one or more second output ratios that reproduce the specified color; selecting a second output ratio that meets the predetermined rendering condition from the one or more second output ratios that have been obtained; determining the selected second output ratio as the second output ratio that reproduces the designated color and conforms to the predetermined rendering conditions; 3. A lighting system according to claim 1 or 2.

4. the operation unit accepts an operation for inputting candidates for the determined value of the first output ratio to the lighting system; the lighting control unit controls the lighting circuit so that the three light-emitting units are lit based on the candidates input to the operation unit.

3. A lighting system according to claim 1 or 2.

5. the three light-emitting units include a light-emitting unit that emits red light, a light-emitting unit that emits green light, and a light-emitting unit that emits blue light; 3. A lighting system according to claim 1 or 2.

6. Further comprising a storage unit for storing a plurality of performance conditions; the operation unit accepts an operation for selecting the predetermined rendering condition from the plurality of rendering conditions; 3. A lighting system according to claim 1 or 2.

7. a storage unit that stores a plurality of performance conditions; an imaging unit that acquires image data including an illumination target present in a range illuminated by the combined light of the four or more light-emitting units; a selection unit that selects the predetermined rendering condition from the plurality of rendering conditions based on a feature amount of the image data acquired by the imaging unit, 3. A lighting system according to claim 1 or 2.

8. a measurement unit that measures an output value of each of the four or more light-emitting units; a correction unit that calculates a correction coefficient for correcting the output value of each of the four or more light-emitting units based on the measurement result of the measurement unit, the measurement unit measures the output value of each of the four or more light-emitting units when the four or more light-emitting units are turned on based on a predetermined input value; the correction unit calculates a ratio of the output value of a second light-emitting unit other than a first light-emitting unit serving as a reference among the four or more light-emitting units to the output value of the first light-emitting unit, and if the calculated ratio does not match an initial setting value of the ratio, calculates a correction coefficient for making the calculated ratio match the initial setting value; When lighting the second light-emitting unit, the lighting control unit controls the lighting circuit so that the second light-emitting unit lights up based on the input value corrected by the correction coefficient.

3. A lighting system according to claim 1 or 2.

9. The four or more light-emitting units are included in one lighting device.

3. A lighting system according to claim 1 or 2.

10. the four or more light-emitting units are included in different lighting devices, 3. A lighting system according to claim 1 or 2.

11. At least two of the four or more light-emitting units are included in one lighting device, and the remaining light-emitting units are included in a lighting device that is separate from the one lighting device and has a one-to-one correspondence with the same number of lighting devices as the remaining light-emitting units, 3. A lighting system according to claim 1 or 2.

12. A method for controlling a lighting system that emits, as illumination light, synthesized light from four or more light-emitting units that emit light of different colors, comprising: a lighting control step of controlling a lighting circuit that lights up the four or more light-emitting units; an operating step of receiving an operation to input determined values ​​of first output ratios of three light-emitting units among the four or more light-emitting units into the lighting system; a determining step of determining second output ratios of the four or more light-emitting units, the second output ratios being output ratios that reproduce a color designated by the determined value of the first output ratio input in the operating step and that conform to predetermined rendering conditions, the lighting control step controls the lighting circuit so that the four or more light-emitting units are lit based on the second output ratio determined in the determination step. A method for controlling a lighting system.

13. A program for causing one or more processors to execute the method for controlling a lighting system according to claim 12.

Images