Lighting control device and program

Abstract

To realize an environment of a uniform color level as whole by performing a seamless control even if a luminaire light of a lighting apparatus is changed.SOLUTION: A reference value setting part 20 of a luminaire light characteristic measurement part 11 of an illumination control device 1, changes an operation amount of a lighting apparatus 4-1, sets a measurement result of the luminaire light as a reference value, and records the operation amount or the like. A measurement part 21 calculates the operation amount by performing a control for setting a difference between the measurement result such as a lighting apparatus 4-2 of the luminaire light and the reference value to 0, and records the operation amount or the like after a fine adjustment of the luminaire light. A characteristic calculation part 22 calculates characteristic information of the lighting apparatus 4-1 or the like on the basis of the recording value recorded by a first illumination processing part 10, a recording value of the lighting apparatus 4-1 recorded by the reference value setting part 20, and the recording value of the lighting apparatus 4-2 or the like recorded by the measurement part 21. A second illumination processing part 12 specifies the operation amount of a color similar to a color corresponded to the change of the luminaire light by using the characteristic information, and makes the lighting apparatus 4-1 or the like emit a light by the luminaire light corresponded to its operation amount.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a lighting control device and a program for controlling the emission color of lighting. [Background technology]

[0002] Conventionally, for example in broadcast production sites, a plurality of lighting fixtures with the same predefined color temperature are used to create an environment with an overall unified color tone.

[0003] However, even if multiple lighting fixtures have the same preset color temperature, the actual color temperature may differ due to individual differences between the lighting fixtures. Also, even if the initial colors are made uniform through detailed adjustments in advance, actual color temperature differences between lighting fixtures may occur due to light changes.

[0004] This is particularly noticeable when multiple lighting fixtures provided by different manufacturers are used. For this reason, even if multiple lighting fixtures with the same specified color temperature are used, it is difficult to realize an environment with a unified color tone overall.

[0005] To solve this problem, there is a method in which a lighting operator manually adjusts multiple parameters for setting the color temperature for each of multiple lighting fixtures by directly judging the light emission color of the lighting with his or her eyes or indirectly judging it using camera images. However, with this method, it is difficult and time-consuming to precisely adjust multiple parameters for multiple types of lighting fixtures.

[0006] In order to solve this problem of manual adjustment, a lighting control device has been proposed that remotely controls multiple lighting fixtures and automatically controls the emission color of each light (see, for example, Patent Document 1). This makes it possible to set the emission color of multiple lights to the same color temperature as the ambient light, which is the current natural light.

[0007] This lighting control device sets the measured RGB values ​​of the ambient light to a reference value RGB_S. Then, for each of a plurality of lighting fixtures, the lighting control device calculates an operation amount by controlling the lighting fixture so that the difference between the RGB values ​​of the fixture light of the lighting fixture and the reference value RGB_S becomes zero, and causes the lighting fixture to emit light according to the operation amount. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2018-67539 A Summary of the Invention [Problem to be solved by the invention]

[0009] Generally, in broadcast production sites, the color temperature is often changed in order to change the atmosphere of the lighting during scene changes during program recording.

[0010] The lighting control device in Patent Document 1 mentioned above sets the fixture light of multiple lighting fixtures to the same color temperature as the ambient light, but it cannot be fully applied to applications where the color temperature needs to be changed to change the lighting atmosphere.

[0011] Let us assume that the color temperature of the light from any one of the multiple lighting fixtures is changed when the light from each of the multiple lighting fixtures is set to the same color temperature as the ambient light. In this case, it is necessary to make the light from the other lighting fixtures follow the change in color temperature of the light from one lighting fixture, but due to individual differences between lighting fixtures, it is not possible to appropriately control the change in the light from each of the lighting fixtures. In other words, when the light from each lighting fixture is changed, it is not possible to realize an environment with a unified color tone as a whole.

[0012] Therefore, the present invention has been made to solve the above-mentioned problems, and its object is to provide a lighting control device and program that can realize an environment with an overall unified color tone through seamless control, even when the fixture light of a lighting fixture is changed. [Means for solving the problem]

[0014] In order to solve the above problems, Claim 1 a control unit for controlling the light emission color of a plurality of lighting fixtures to realize an environment with a uniform color tone overall, the control unit comprising: a first lighting processing unit that performs control to set a difference between a measurement result of fixture light and a color of ambient light for each of the plurality of lighting fixtures to zero; and, in a state in which the difference between the measurement result of the fixture light and the color of the ambient light is minimized under the control of the first lighting processing unit, changing an operation amount for a predetermined reference lighting fixture among the plurality of lighting fixtures, setting a measurement result of the fixture light corresponding to the changed operation amount to a reference value, calculating an operation amount for each of the other lighting fixtures among the plurality of lighting fixtures by controlling to set a difference between the measurement result of the fixture light and the reference value to zero, causing the lighting control device to emit fixture light with the operation amount, and and a fixture light characteristic measurement unit that determines a characteristic representing a relationship between the operation amount and the value of the fixture light for each of the plurality of lighting fixtures, based on measurement results of the operation amount and fixture light of each of the plurality of lighting fixtures, the measurement results of the operation amount and fixture light of the reference lighting fixture when the reference value is set, and the measurement results of the operation amount and fixture light of each of the other lighting fixtures when a difference between the fixture light measurement result and the reference value is minimum; and a second lighting processing unit that, when the operation amount of any of the plurality of lighting fixtures is changed, identifies an operation amount for each of the other lighting fixtures of the plurality of lighting fixtures based on the characteristic determined by the fixture light characteristic measurement unit so that the color of the fixture light resulting from the change in the operation amount of any of the plurality of lighting fixtures is the same as the color of the fixture light resulting from the change in the operation amount of any of the plurality of lighting fixtures, and causes the fixture light to be emitted at the operation amount.

[0015] Also, claims 2The lighting control device according to claim 1 In the lighting control device described in the above, the characteristic is a gradient of the value of the fixture light with respect to the amount of operation.

[0016] In addition, claims 3 The lighting control device according to claim 1 wherein the characteristic is an amount of change in the operation amount in each of the other lighting fixtures relative to a unit amount of change in the operation amount in the reference lighting fixture when the fixture light of the plurality of lighting fixtures changes by the same value.

[0017] Furthermore, claims 4 The program controls the light emission color of a plurality of lighting fixtures, and configures a lighting control device that realizes an environment with a uniform color tone as a whole, a first lighting processing unit that performs control to set a difference between a measurement result of fixture light and a color of ambient light for each of the plurality of lighting devices to zero; changing an operation amount for a predetermined reference lighting device among the plurality of lighting devices in a state in which the difference between the measurement result of fixture light and the color of the ambient light is minimized under the control of the first lighting processing unit, setting a measurement result of fixture light corresponding to the changed operation amount to a reference value, calculating an operation amount for each of the other lighting devices among the plurality of lighting devices by controlling to set a difference between the measurement result of fixture light and the reference value to zero, causing fixture light to be emitted based on the operation amount, and calculating an operation amount and a reference value for each of the plurality of lighting devices in a state in which the difference between the measurement result of fixture light and the color of the ambient light is minimized under the control of the first lighting processing unit. a fixture light characteristic measurement unit that determines a characteristic representing a relationship between an operation amount and a fixture light value for each of the plurality of lighting devices, based on a light measurement result, a measurement result of the operation amount and fixture light of the reference lighting device when the reference value is set, and a measurement result of the operation amount and fixture light of each of the other lighting devices when a difference between the fixture light measurement result and the reference value is minimum; and a second lighting processing unit that, when the operation amount of any of the plurality of lighting devices is changed, identifies an operation amount for each of the other lighting devices of the plurality of lighting devices based on the characteristic determined by the fixture light characteristic measurement unit so that the color of the fixture light is the same as a color of the fixture light resulting from a change in the operation amount of any of the plurality of lighting devices, and causes the lighting device to emit the fixture light with the operation amount. The present invention is characterized in that it functions as a Effect of the Invention

[0018] As described above, according to the present invention, even if the fixture light of a lighting fixture is changed to change the lighting atmosphere, an environment with a unified color tone as a whole can be realized through seamless control. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a schematic diagram showing an example of the configuration of an entire system for controlling the emission color of lighting in a broadcast production site. [Diagram 2] 11 is a diagram showing characteristics a and b representing the relationship between the operation amount of the R component of the fixture light and the R value of the fixture light. FIG. [Diagram 3] (1) is a diagram for explaining the relationship between characteristics a and b of the R value of the fixture light, (2) is a diagram for explaining the parameter xR1, and (3) is a diagram for explaining the parameter xR2. [Figure 4] 1 is a block diagram showing an example of the configuration of a lighting control device according to an embodiment of the present invention. [Diagram 5] 4 is a block diagram showing a configuration example of an instrument light characteristic measuring unit. FIG. [Figure 6] 10 is a flowchart illustrating an example of processing by a fixture light characteristic measuring unit. [Figure 7] 4 is a block diagram showing a configuration example of an instrument light control unit. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, the embodiment of the present invention will be described in detail with reference to the drawings. In the present invention, when the fixture light of one reference lighting fixture among a plurality of lighting fixtures is changed, the measurement result of the fixture light resulting from the change in the operation amount of the reference lighting fixture is set to a reference value, and the fixture light of the other lighting fixtures is made to follow the fixture light of the reference lighting fixture by controlling to make the difference between the measurement result of the fixture light of the other lighting fixtures and the reference value zero.

[0021] As a result, even if the lighting fixture light is changed to change the lighting atmosphere, an environment with a consistent color tone as a whole can be realized through seamless control.

[0022] [Overall system] First, an overall system including a lighting control device according to an embodiment of the present invention will be described. Fig. 1 is a schematic diagram showing an example of the configuration of an overall system that controls the emission color of lighting in a broadcast production site.

[0023] This system is used in production sites where dramas and the like are recorded, where the emitted color of multiple lighting fixtures track the color of the reference ambient light. In order to change the lighting atmosphere, the amount of operation of the light from one fixture is changed, and the measurement results of the light from the other fixtures are made to track the measurement results of the light from the other fixtures following the measurement results of the light from this change, thereby creating an environment with an overall unified color tone.

[0024] In addition, in order to change the lighting atmosphere, the characteristics of each fixture light are acquired, and based on these characteristics, the lights of other fixtures are made to follow the change in the amount of operation of the fixture light, thereby realizing an environment with a unified color tone overall.

[0025] This system is configured with a lighting control device 1, ambient light measuring devices 2-0, 2-1, lighting processing devices 3-1, 3-2,..., and lighting fixtures 4-1, 4-2,.... The lighting fixtures 4-1, 4-2,... are equipped with corresponding lighting processing devices 3-1, 3-2,.... In addition, an ambient light measuring device 2-1 is equipped with any of the lighting fixtures 4-1, 4-2,... (lighting fixture 4-1 in the case of FIG. 1). Both the ambient light measuring device 2-0 and the lighting control device 1 are portable devices.

[0026] The lighting control device 1, the environmental light measuring devices 2-0 and 2-1, and the lighting processing devices 3-1, 3-2, . . . are connected via wireless communication paths such as Wi-Fi (registered trademark) and Bluetooth (registered trademark).

[0027] A lighting operator OP possesses a lighting control device 1 and an ambient light measuring device 2-0, and is standing in a space to be illuminated. By operating switches, not shown, the lighting operator OP causes the lighting control device 1 to execute processes such as measuring ambient light, setting operation variables, following ambient light, changing fixture light, measuring the characteristics of fixture light, and changing fixture light, and also manually fine-tunes the emission color of the lighting fixtures 4-1, 4-2, ....

[0028] The lighting operator OP may install the ambient light measuring device 2-0 at a location where lighting is desired, and operate a switch or the like at a location other than the location where lighting is desired to be performed, thereby causing the lighting control device 1 to execute processing.

[0029] The lighting processing devices 3-1, 3-2, ... receive operation amounts from the lighting control device 1 and cause the corresponding lighting devices 4-1, 4-2, ... to emit fixture light corresponding to the operation amounts. The lighting devices 4-1, 4-2, ... receive operation amounts from the corresponding lighting processing devices 3-1, 3-2, ... and emit fixture light corresponding to the operation amounts.

[0030] The lighting processing devices 3-1, 3-2, ... measure the light emission color of the corresponding lighting devices 4-1, 4-2, ... and transmit the measurement results of the light emission color of the lighting devices 4-1, 4-2, ... (hereinafter referred to as the measurement results of the fixture light) to the lighting control device 1. In addition, the ambient light measuring devices 2-0, 2-1 measure the color of the ambient light and transmit the measurement results of the color of the ambient light (hereinafter referred to as the measurement results of the ambient light) to the lighting control device 1.

[0031] Here, the lighting fixture 4-1 equipped with the environmental light measuring device 2-1 is defined as the reference lighting fixture. Since both the lighting processing device 3-1 and the environmental light measuring device 2-1 measure the luminous color of the lighting fixture 4-1, if they can be distinguished during processing, one device can have two roles. That is, each of the lighting processing device 3-1 and the environmental light measuring device 2-1 can measure the luminous color of the lighting fixture 4-1 and the color of the environmental light.

[0032] The lighting control device 1 is, for example, a tablet-type operation terminal that controls the emission color of lighting fixtures 4-1, 4-2, ..., and realizes an environment with a unified color tone as a whole. The lighting control device 1 inputs the measurement results of the ambient light from the ambient light measurement device 2-0 or the ambient light measurement device 2-1. The lighting control device 1 also transmits the operation amount to the lighting processing devices 3-1, 3-2, ..., and receives the measurement results of the fixture light, which is the emission color of the lighting fixtures 4-1, 4-2, ..., from the lighting processing devices 3-1, 3-2, ....

[0033] When the lighting operator OP performs an operation to follow the ambient light, the lighting control device 1 performs control so that the difference between the measurement results of all the fixture lights and the reference value becomes 0, using the measurement results of the ambient light as a reference value. Then, the lighting operator OP performs fine adjustment of the fixture lights (fine adjustment of the operation amount). This process is performed by a first lighting processing unit 10 shown in Fig. 4 described later, and corresponds to the method described in the above-mentioned Patent Document 1.

[0034] As a result, the color of the light from the lighting fixtures 4-1, 4-2, . . . follows the color of the ambient light, and an environment with a unified color tone as a whole is realized in accordance with the ambient light.

[0035] Furthermore, when the lighting operator OP performs an operation to change the fixture light and measure the characteristics of the fixture light, the lighting control device 1 sets the measurement result of the fixture light obtained by changing the operation amount of the reference lighting device to the operation amount + α (adding a predetermined amount of α to the operation amount and outputting it) to a reference value. Then, the lighting control device 1 performs control to make the differences between the measurement results of all other fixture lights and the reference value zero, and acquires the characteristics of the fixture light after the lighting operator OP fine-tunes the operation amount. This process is performed by a fixture light characteristics measurement unit 11 shown in FIG. 4, which will be described later.

[0036] This makes it possible to realize an environment with a uniform color tone overall in response to changes in the fixture light, and also to obtain the characteristics of the fixture light relative to the amount of operation of the lighting fixtures 4-1, 4-2, . . . .

[0037] Furthermore, when the lighting operator OP performs an operation to change the fixture light, the lighting control device 1 identifies an operation amount corresponding to the change in fixture light based on the already acquired characteristics of the fixture light for the operation amount of the lighting fixtures 4-1, 4-2, ..., and changes the fixture light with the identified operation amount. This process is performed by a second lighting processing unit 12 shown in Fig. 4, which will be described later.

[0038] This makes it possible to realize an environment with a consistent overall color tone in response to changes in the lighting of the fixtures.

[0039] Summary of the Invention Next, an overview of the present invention will be described. The present invention focuses on the fact that the relationship arising from individual differences between, for example, lighting fixture 4-1, which is a reference lighting fixture, and lighting fixture 4-2 shown in Fig. 1, can be expressed by a characteristic (slope of linear change) that indicates the relationship of the color components of the fixture light to the amount of operation. For example, when the amount of operation of lighting fixture 4-1 is changed, the present invention causes the measurement result of the fixture light of lighting fixture 4-2 to follow the measurement result of the fixture light of lighting fixture 4-1.

[0040] Here, it is assumed that the method described in the aforementioned Patent Document 1 minimizes the difference between the color of the ambient light and the measurement results of the fixture light of the lighting fixtures 4-1, 4-2, ..., and realizes an environment with an overall unified color tone that corresponds to the ambient light.

[0041] The R value of the reference value (required light color of the ambient light, for example, RGB value here. In the following description, RGB is assumed to be the required light color) which is the measurement result of the ambient light is expressed as R B , G value G B , B value is B B Let (R 0(B) ,G 0(B) ,B 0(B) )

[0042] Also, the RGB values ​​resulting from the measurement of the fixture light from lighting fixture 4-1 are (R1, G1, B1), the RGB values ​​resulting from the measurement of the fixture light from lighting fixture 4-2 are (R2, G2, B2), . . .

[0043] If the color of the ambient light matches the color of the light from the lighting fixtures 4-1, 4-2, ..., R 0(B) =R1=R2=..., G 0(B) =G1=G2=..., B 0(B) =B1=B2=···, and the apparent colors of the lighting fixtures 4-1, 4-2,··· are consistent in accordance with the ambient light.

[0044] In this state, for lighting fixture 4-1, when the operation amount of only the R component among the RGB components is changed to the operation amount +α, the RGB value that is the measurement result of the fixture light is (R 1(B+α) ,G 1(B),B 1(B) In this case, the original operation amount is the operation amount when the color of the fixture light matches the color of the ambient light, and a predetermined amount α is added to the original operation amount.

[0045] In addition, for lighting fixture 4-1, the RGB values ​​when the operation amount of only the G component is changed to the operation amount + α are (R 1(B) ,G 1(B+α) ,B 1(B) ), and the RGB value when the operation amount of only the B component is changed to the operation amount + α is (R 1(B) ,G 1(B) ,B 1(B+α) )

[0046] Similarly, for lighting fixture 4-2, when the operation amount for only the R component is changed to the operation amount +α, the RGB value of the measurement result of the fixture light is (R 2(B+α) ,G 2(B) ,B 2(B) ) for lighting fixture 4-2. The RGB values ​​when the operation amount of only the G component is changed to the operation amount + α are (R 2(B) ,G 2(B+α) ,B 2(B) ), and the RGB value when the operation amount of only the B component is changed to the operation amount + α is (R 2 (B) ,G 2 (B) ,B 2 (B+α) )

[0047] 2 is a diagram showing characteristics a and b that represent the relationship between the amount of manipulation of the R component of the fixture light and the R-value of the fixture light. The horizontal axis represents the amount of manipulation of the R component (%), and the vertical axis represents the R-value of the fixture light (the R-value of the measured fixture light). Characteristic a represents the R-value characteristic of lighting fixture 4-1, and character b represents the R-value characteristic of lighting fixture 4-2.

[0048] In addition, in the R-value characteristic a of lighting fixture 4-1, R 1(40) is the R value of the fixture light when the R component operation amount is 40%, and R 1(60) is the R value of the fixture light when the R component operation amount is 60%. In addition, in the R value characteristic b of the lighting fixture 4-2, R 2(40) is the R value of the fixture light when the R component operation amount is 40%, and R 2(60)is the R value of the fixture light when the R component operation amount is 60%.

[0049] 2, comparing the slope of the R-value characteristic a for lighting device 4-1 (the slope of the R-value of the fixture light versus the amount of manipulation of the R component) with the slope of the R-value characteristic b for lighting device 4-2, it can be seen that the latter is larger than the former in an area where the amount of manipulation is greater than 20%. In other words, when the amount of manipulation of the R component is changed by the same amount in lighting device 4-1 and 4-2, the amount of change in the R-value of the fixture light is larger for lighting device 4-2 than for lighting device 4-1.

[0050] Here, assume that the R values ​​of the fixture light from lighting fixtures 4-1 and 4-2 are the same and an environment with a unified color tone overall is realized in accordance with the ambient light, and then the operation amount for lighting fixture 4-1 is changed to operation amount + α in order to change the color setting of the fixture light of lighting fixture 4-1 to a predetermined color.

[0051] In this case, lighting fixture 4-1 is changed to a predetermined color in response to the operation amount +α, but lighting fixture 4-2 does not become the same predetermined color as lighting fixture 4-1 even if its operation amount is changed to the operation amount +α. This is because there are individual differences between lighting fixtures 4-1 and 4-2, and as shown in FIG. 2, the characteristic slopes of lighting fixtures 4-1 and 4-2 are different.

[0052] Therefore, in an embodiment of the present invention, when lighting device 4-1 is changed to a predetermined color corresponding to an operation amount +α, an operation amount +α' is output for lighting device 4-2 so as to change its fixture light to the same predetermined color.

[0053] FIG. 3(1) is a diagram for explaining the relationship between the characteristics a and b of the R value of the light from the fixture. The R values ​​of the lighting fixtures 4-1 and 4-2 are the same (R 1(B) =R 2(B) ) and assume that an environment with a uniform color tone is realized in accordance with the ambient light. In this case, the operation amounts of lighting fixtures 4-1 and 4-2 are SR1 and SR2, respectively.

[0054] When the operation amount SR1 of the lighting fixture 4-1 is changed to the operation amount SR1+α, the R value becomes R 1(B) From R 1(B+α) When the operation amount SR2 of lighting fixture 4-2 is changed to the operation amount SR2+α, the R value becomes R 2(B) From R 2(B+α) Since there are individual differences between the lighting fixtures 4-1 and 4-2, the characteristics a and b are 1(B+α) <R 2(B+α) It is.

[0055] Here, R 1(B+α) and R 2(B+α) R so that the difference between 1(B+α) The operation amount SR2+α of lighting device 4-2 is changed in the direction of arrow y with respect to a reference value.

[0056] Figure 3(2) shows the parameter x R1 FIG. 3(3) is a diagram for explaining the parameter x R2 FIG.

[0057] As shown in FIG. 3(2), when the operation amount of the R-value characteristic b of the lighting fixture 4-2 is changed to the operation amount +1 (%), the same apparent change in the R-value of the lighting fixture 4-1 is caused in the R-value characteristic a of the lighting fixture 4-1. The change amount of the operation amount of the lighting fixture 4-1 is expressed as the parameter x R1 Let us assume that.

[0058] In addition, as shown in FIG. 3(3), when the operation amount in the R-value characteristic a of the lighting fixture 4-1 is changed to the operation amount +1 (%), the change amount of the operation amount of the lighting fixture 4-2 to cause the same apparent change in the R-value characteristic b of the lighting fixture 4-2 is expressed as the parameter x R2 Let us assume that.

[0059] Generally, LED lighting units such as the lighting fixtures 4-1 and 4-2 are designed to have a linear change in the light emitted by the fixture, and as shown in FIG. 2, many of them are stable when the operation amount is between 20% and 100%.

[0060] Therefore, the relationship between the R-value characteristic a of the lighting fixture 4-1 and the R-value characteristic b of the lighting fixture 4-2 is expressed by the following formula when the operation amount is 20 < B < B + α (%). [Equation 1] R 2(B+α) =(x R2 -x R1 )α + R 1(B+α) ···(1)

[0061] Thus, when the R-values of the lighting fixtures 4-1 and 4-2 match (R 1(B) = R 2(B) ), in a state where an environment with a unified color tone as a whole corresponding to the ambient light is realized, by changing the operation amount of the R component of the lighting fixture 4-1, the lighting fixture 4-2 can be changed to the same color as the fixture light of the lighting fixture 4-1. That is, the R components of the lighting fixtures 4-1 and 4-2 can be changed to look the same.

[0062] In addition, for the G and B components of the lighting fixtures 4-1 and 4-2 as well, similar to the case of the R component, by changing the operation amount of the G and B components of the lighting fixture 4-1, the lighting fixture 4-2 can be changed to the same color as the fixture light of the lighting fixture 4-1. That is, the G and B components of the lighting fixtures 4-1 and 4-2 can be changed to look the same.

[0063] Therefore, for example, the apparent color changes of the lighting fixtures 4-1 and 4-2 shown in FIG. 1 can be made consistent, and an environment with a unified color tone as a whole can be realized.

[0064] In addition, when generalizing the above formula (1), it is expressed by the following formula. [Equation 2] C i(B+α) =(x Ci -x C1 )α + C 1(B+α) ···(2) C represents any RGB color component, and i represents the numbers of the lighting fixtures 4-1, 4-2, ··· (i is a positive integer and i > 1).

[0065] In addition, the above explanation is about the lighting fixtures 4-1 and 4-2, which are the reference lighting fixtures, but the same applies to the lighting fixture 4-1 and the other lighting fixtures. As a result, the apparent changes can be made uniform for all lighting fixtures 4-1, 4-2, ...

[0066] [Lighting control device] Next, a detailed description will be given of the lighting control device 1 shown in Fig. 1. Fig. 4 is a block diagram showing an example of the configuration of a lighting control device 1 according to an embodiment of the present invention. This lighting control device 1 comprises a first lighting processing unit 10, an instrument light characteristic measuring unit 11, and a second lighting processing unit 12.

[0067] When an operation to follow the ambient light is performed by a lighting operator OP, the first lighting processing unit 10 performs lighting control on the lighting fixtures 4-1, 4-2, . . . in accordance with the method described in Patent Document 1 mentioned above.

[0068] Specifically, the first lighting processing unit 10 receives the measurement result of the ambient light from the ambient light measuring device 2-0 or the ambient light measuring device 2-1, and sets the measurement result of the ambient light as a reference value. Then, the first lighting processing unit 10 receives the measurement results of the fixture light of the lighting fixtures 4-1, 4-2, ... from the lighting processing devices 3-1, 3-2, .... The first lighting processing unit 10 calculates an operation amount by control for making the difference between the measurement result of the fixture light and the reference value zero, and transmits the operation amount to the lighting processing devices 3-1, 3-2, .... Then, the lighting operator OP fine-tunes the fixture light (fine-adjusts the operation amount).

[0069] When fine adjustment of the fixture light is performed, the first lighting processing unit 10 holds the operation amount of the lighting fixtures 4-1, 4-2, . . . and the measurement result of the fixture light at that time as recorded values ​​and outputs them to the fixture light characteristic measuring unit 11.

[0070] As a result, the fixture light of the lighting fixtures 4-1, 4-2, ... follows the ambient light, and an environment with a uniform color tone is realized in accordance with the ambient light. Moreover, by inputting the recorded values ​​of such an environment, the fixture light characteristic measurement unit 11, which will be described later, can use the recorded values ​​as data for determining the fixture light characteristics of the lighting fixtures 4-1, 4-2, ...

[0071] When a lighting operator OP performs an operation to change the fixture light and measure the characteristics of the fixture light, the fixture light characteristic measuring unit 11 causes the other fixture lights to follow the change in fixture light, and acquires the fixture light characteristics for the operation amount of the lighting fixtures 4-1, 4-2, ....

[0072] Specifically, the fixture light characteristic measurement unit 11 changes the operation amount of the lighting fixture 4-1, which is the reference lighting fixture, to the operation amount +α and transmits it to the lighting processing device 3-1, receives the measurement result of the fixture light at that time from the lighting processing device 3-1, and sets the measurement result of the fixture light to a reference value. Then, the fixture light characteristic measurement unit 11 receives the measurement result of the fixture light from the lighting processing devices 3-2, ..., calculates the operation amount by controlling so as to make the difference between the measurement result of the fixture light and the reference value zero, and transmits the operation amount to the lighting processing devices 3-2, .... Then, the lighting operator OP fine-tunes the fixture light (fine-tuning the operation amount).

[0073] As a result, the fixture light of lighting fixtures 4-2, ... will follow the measurement results of the fixture light of lighting fixture 4-1, which is the reference fixture, when the operation amount of that fixture is changed to operation amount + α, and an environment with a unified color tone overall can be achieved in response to the change in the fixture light.

[0074] When fine adjustment of the fixture light is performed, the fixture light characteristics measurement unit 11 records the operation amount and the fixture light measurement result of the lighting fixtures 4-1, 4-2, ... at that time. The fixture light characteristics measurement unit 11 also inputs the recorded values ​​from the first lighting processing unit 10. Then, the fixture light characteristics measurement unit 11 determines the fixture light characteristics of the lighting fixtures 4-1, 4-2, ... based on these recorded values, and outputs them to the second lighting processing unit 12 as characteristic information. The details of the fixture light characteristics measurement unit 11 will be described later.

[0075] As a result, the second lighting processing unit 12, which will be described later, can input the characteristic information and use the characteristic information as data for calculating the operation amount of the lighting devices 4-1, 4-2, ... when the device light is changed.

[0076] When an operation to change the fixture light is performed by the lighting operator OP, the second lighting processing unit 12 inputs characteristic information from the fixture light characteristic measuring unit 11, identifies an operation amount corresponding to the change in the fixture light based on the characteristic information, and changes the fixture light with the operation amount.

[0077] Specifically, the second lighting processing unit 12 receives the characteristic information from the fixture light characteristic measurement unit 11. Then, in response to a change in the operation amount of the lighting fixture 4-1, which is the reference lighting fixture, the second lighting processing unit 12 specifies the operation amount of the lighting fixtures 4-2, ... based on the characteristic information so that the color of the fixture light of the lighting fixture 4-1 becomes the same color (RGB value) as the operation amount of the lighting fixture 4-1 changes. The second lighting processing unit 12 outputs the changed operation amount to the lighting processing device 3-1, and outputs the specified operation amount to the lighting processing devices 3-1, 3-2, ....

[0078] This makes it possible to realize an environment with a consistent overall color tone in response to changes in the lighting of the fixtures.

[0079] (Light Characteristics Measurement Unit 11) Next, a detailed description will be given of the instrument light characteristics measuring unit 11 shown in Fig. 4. Fig. 5 is a block diagram showing an example of the configuration of the instrument light characteristics measuring unit 11, and Fig. 6 is a flowchart showing an example of the processing of the instrument light characteristics measuring unit 11.

[0080] As described above, in response to a change in the operation amount of lighting fixture 4-1, which is the reference lighting fixture, the fixture light characteristic measurement unit 11 causes the fixture light measurement results of lighting fixtures 4-2, ... to follow the reference value, which is the measurement result of the fixture light of lighting fixture 4-1, and acquires the fixture light characteristics for the operation amount of lighting fixtures 4-1, 4-2, ....

[0081] 5, fixture light characteristic measuring unit 11 includes a reference value setting unit 20, a measuring unit 21, and a characteristic calculating unit 22. The measuring unit 21 includes a fixture light control unit 30-2 and an operation amount adjustment unit 31-2 corresponding to lighting fixture 4-2, and includes a fixture light control unit 30-3 etc. and an operation amount adjustment unit 31-3 etc. corresponding to lighting fixture 4-3 etc.

[0082] 5 and 6, in processing by the fixture light characteristic measuring unit 11, it is assumed that the first lighting processing unit 10 shown in FIG. 4 realizes an environment with an overall unified color tone in accordance with the ambient light using the method described in the aforementioned Patent Document 1.

[0083] In other words, it is assumed that the color of the ambient light matches the measurement results of the fixture light of the lighting fixtures 4-1, 4-2, ... (the difference is minimal), and the first lighting processing unit 10 holds the operation amounts and fixture light measurement results of the lighting fixtures 4-1, 4-2, ... at that time as recorded values. The first lighting processing unit 10 outputs the recorded values ​​to the reference value setting unit 20 and characteristic calculation unit 22 of the fixture light characteristic measurement unit 11.

[0084] Here, the recorded value output by the first lighting processing unit 10 is the operation amount (SR 1(B) ,SG 1(B) ,SB 1(B) ) and the corresponding measurement results of the instrument light (R 1(B) ,G 1(B) ,B 1(B) ), the operation amount of lighting fixture 4-2 (SR 2(B) ,SG 2(B) ,SB 2(B) ) and the corresponding measurement results of the instrument light (R 2(B) ,G 2(B) ,B 2(B)),... R 1(B) =R 2(B) = , G 1(B) =G 2(B) = , B 1(B) =B 2(B) =···.

[0085] When the lighting operator OP performs an operation to change the fixture light and the operation mode is changed to the reference fixture light change measurement mode, the reference value setting unit 20 of the fixture light characteristic measurement unit 11 selects one reference lighting fixture from among the lighting fixtures 4-1, 4-2, ... (step S601). In this example, it is assumed that the reference value setting unit 20 selects the lighting fixture 4-1 as the reference lighting fixture.

[0086] The reference value setting unit 20 inputs the recorded values ​​from the first lighting processing unit 10, selects the required light color to be the first measurement target from, for example, RGB colors, and calculates the operation amount (SR 1(B) ,SG 1(B) ,SB 1(B) ) is extracted. The reference value setting unit 20 then extracts the manipulated variable (SR 1(B) ,SG 1(B) ,SB 1(B) ) to obtain a new operation amount (SR 1(B) +α,SG 1(B) ,SB 1(B) ) (operation amount + α) is set, and the new operation amount (SR 1(B) +α,SG 1(B) ,SB 1(B) ) is output (transmitted) to the lighting processing device 3-1 (step S602).

[0087] This results in a new operation amount (SR 1(B) +α,SG 1(B) ,SB 1(B) ) is input from the lighting processing device 3-1 to the lighting fixture 4-1, and the lighting fixture 4-1 outputs a new operation amount (SR 1(B) +α,SG 1(B) ,SB 1(B) Then, the lighting device 3-1 emits a light corresponding to the new operation amount (R1(B) +α,G 1(B) ,B 1(B) ) is measured as the reference light.

[0088] New operation amount (SR 1(B) +α,SG 1(B) ,SB 1(B) ) corresponding to the measurement result of the fixture light (R 1(B+α) ,G 1(B) ,B 1(B) ) is transmitted from the illumination processing device 3-1 to the reference value setting unit 20. The reference value setting unit 20 receives the measurement result of the reference light (R 1(B+α) ,G 1(B) ,B 1(B) ) is input (received) and this is used as the reference value (R 1(B+α) ,G 1(B) ,B 1(B) ) (step S603).

[0089] Reference value setting unit 20 outputs the reference value for the selected requested light color to measurement unit 21. Furthermore, reference value setting unit 20 retains the operation amount +α and the corresponding measurement result of the reference light when the operation amount of the requested light color of lighting fixture 4-1, which is the reference lighting fixture, is changed to the operation amount +α as a recorded value, and outputs these to characteristic calculation unit 22.

[0090] For example, when the R component, which is the requested light color, is selected, the reference value setting unit 20 sets the reference value (R 1(B+α) ,G 1(B) ,B 1(B) ) to the measurement unit 21. The reference value setting unit 20 also outputs the manipulated variable (SR 1(B) +α,SG 1(B) ,SB 1(B) ) and the corresponding measurement results of the reference light (R 1(B+α) ,G 1(B) ,B 1(B) ) as a recorded value and outputs the recorded value to the characteristic calculation unit 22.

[0091] When the lighting operator OP performs an operation to measure the characteristics of the fixture light and the operation mode is changed to the fixture change measurement mode, the measurement unit 21 receives a reference value (R 1(B+α),G 1(B) ,B 1(B) ) and selects lighting fixture 4-2 as the first lighting fixture (step S604). Then, fixture light control unit 30-2 of measurement unit 21 corresponding to lighting fixture 4-2 receives the measurement result of the fixture light of lighting fixture 4-2 (R 2(B) ,G 2(B) ,B 2(B) ) is input (received) (step S605).

[0092] The instrument light control unit 30-2 outputs the instrument light measurement result (R 2(B) ,G 2(B) ,B 2(B) ) and the reference value (R 1(B+α) ,G 1(B) ,B 1(B) ) is used to calculate the manipulated variable, i.e., the R value of the measurement result of the light of the fixture, R 2(B) and the standard R value R 1(B+α) and calculates an amount of operation by controlling so as to make the difference between them 0. Then, the fixture light control unit 30-2 outputs (transmits) the amount of operation to the lighting processing device 3-2 (step S606).

[0093] As a result, the operation amount is input from the lighting processing device 3-2 to the lighting device 4-2, and the lighting device 4-2 emits an instrument light corresponding to the operation amount. Then, the measurement result of the instrument light corresponding to the operation amount is transmitted from the lighting processing device 3-2 to the instrument light control unit 30-2.

[0094] 7 is a block diagram showing an example of the configuration of the fixture light control unit 30-2. The fixture light control unit 30-2 includes a subtraction unit 40, a control unit 41, and a switching unit .

[0095] The subtraction unit 40 receives the reference value (R 1(B+α) ,G 1(B) ,B 1(B) ) and the measurement result of the fixture light (R 2(B) ,G 2(B) ,B 2(B) ) and enter the reference value (R 1(B+α) ,G 1(B) ,B1(B) ) to the measurement result of the fixture light (R 2(B) ,G 2(B) ,B 2(B) ) is subtracted to obtain the difference, and the difference is output to the control unit 41. Here, the measurement result of the first fixture light is (R 2(B) ,G 2(B) ,B 2(B) ) and R 1(B+α) ≠R 2(B) ,G 1(B) =G 2(B) ,B 1(B) =B 2(B) However, as the control by the control unit 41 proceeds, G 1(B) =G 2(B) ,B 1(B) =B 2(B) In this state, the R value of the measurement result of the fixture light is R 2(B) R 1(B+α) becomes closer to.

[0096] The control unit 41 receives the difference from the subtraction unit 40, calculates an operation amount by performing control so that the difference becomes zero, and outputs the operation amount to the switching unit .

[0097] The switching unit 42 receives an input of an operation amount from the control unit 41. The switching unit 42 also receives a switching signal indicating manual and a manual operation amount (an operation amount finely adjusted manually in step S611 described later) from an operation amount adjustment unit 31-2 described later.

[0098] When the switching unit 42 does not receive a switching signal indicating manual, it determines that the operation state is automatic, and transmits the operation amount received from the control unit 41 to the lighting processing device 3-2. On the other hand, when the switching unit 42 receives a switching signal indicating manual from the operation amount adjustment unit 31-2, it determines that the operation state is manual, and transmits the manual operation amount received from the operation amount adjustment unit 31-2 to the lighting processing device 3-2.

[0099] 5 and 6, the fixture light control unit 30-2 determines whether the difference in step S606 is a minimum (whether it is smaller than a predetermined threshold) (step S607). If the fixture light control unit 30-2 determines in step S607 that the difference is not a minimum (is not smaller than the threshold) (step S607: N), the process proceeds to step S605. By this feedback control, the processes in steps S605 to S607 are repeated, and the measurement result of the fixture light of, for example, lighting fixture 4-2 approaches the reference value.

[0100] On the other hand, if the fixture light control unit 30-2 determines in step S607 that the difference is minimum (determines that the difference is smaller than the threshold value) (step S607: Y), it determines the output level of the operation amount when the difference is minimum (step S608).

[0101] As a result, the fixture light control unit 30-2 continues to transmit the operation amount of the output level determined in step S608 as a fixed operation amount to control the fixture light of the lighting fixture 4-2. Then, the lighting fixture 4-2 illuminates with the fixture light corresponding to the fixed operation amount, and the measurement result of the fixture light of the lighting fixture 4-2 becomes a constant value.

[0102] Measurement unit 21 determines whether or not the process of determining the output levels of the manipulated variables in step S608 has been completed for all lighting fixtures (lighting fixture 4-2, . . . ) (step S609).

[0103] If measurement unit 21 determines in step S609 that the measurement has not been completed for all lighting fixtures (step S609: N), it selects the next lighting fixture (step S610) and proceeds to step S605. Measurement unit 21 selects, for example, lighting fixture 4-3 as the lighting fixture next to lighting fixture 4-2.

[0104] As a result, the processes of steps S605 to S608 are performed for the next lighting fixture 4-3, and the output level of the manipulated variable when the difference is minimum is determined in step S608. Then, the processes of steps S605 to S608 are performed for all lighting fixtures.

[0105] If the measurement unit 21 determines in step S609 that the process is completed for all lighting fixtures (step S609: Y), it determines that the determination of the output levels of the operation amounts of the requested light colors selected in step S602 is completed for all lighting fixtures. Then, the measurement unit 21 instructs the lighting operator OP to manually fine-tune the operation amounts of the requested light colors for all lighting fixtures (step S611).

[0106] When the operation amount adjustment unit 31-2 of the measurement unit 21 inputs the operation amount of the requested light color that has been manually fine-tuned for the lighting fixture 4-2 in accordance with the operation of the lighting operator OP, the operation amount adjustment unit 31-2 outputs this as the manual operation amount of the requested light color to the fixture light control unit 30-2 together with a switching signal indicating manual.

[0107] When the fixture light control unit 30-2 receives a switching signal indicating manual and a manual operation amount of the requested light color from the operation amount adjustment unit 31-2, it transmits the operation amount including the operation amount of the requested light color to the lighting processing device 3-2.

[0108] For example, the initial requested light color is the R component, and the manipulated variable whose output level is determined in step S608 is (SR 2(B) +α R2’ ,SG 2(B) ,SB 2(B) ), and the manual operation amount of the R component, which is the desired light color, is (SR 2(B) +α R2 Then, the device light control unit 30-2 sets the operation amount (SR 2(B) +α R2’ ,SG 2(B) ,SB 2(B) ) for the manual operation amount of R component (SR 2(B) +α R2 ) and the new operation amount (SR 2(B) +α R2 ,SG 2(B) ,SB 2(B) ) to the lighting processing device 3-2.

[0109] As a result, the R component operation amount SR 2(B) +α R2 The new operation amount (SR 2(B) +α R2 ,SG 2(B) ,SB 2(B) The measurement result of the instrument light at this time is (R 2(B+α) ,G 2(B) ,B 2(B) )

[0110] When the R component, which is the requested light color, is selected, the measurement unit 21 measures the operation amount (SR 2(B) +α R2 ,SG 2(B) ,SB 2(B) ) and the corresponding measurement results of the instrument light (R 2(B+α) ,G 2(B) ,B 2(B) ) as a recorded value and outputs the recorded value to the characteristic calculation unit 22.

[0111] The operation amount adjuster 31-3 and the fixture light control unit 30-3 perform the same processing as the operation amount adjuster 31-2 and the fixture light control unit 30-2. Then, when the R component, which is the requested light color, is selected, the measurement unit 21 calculates the operation amount (SR 3(B) +α R3 ,SG 3(B) ,SB 3(B) ) and the corresponding measurement results of the instrument light (R 3(B+α) ,G 3(B) ,B 3(B) ) as a recorded value and outputs the recorded value to the characteristic calculation unit 22.

[0112] In other words, for each of all lighting fixtures 4-2, ... other than lighting fixture 4-1, the measurement unit 21 controls the difference between the measurement value of the fixture light of that lighting fixture and the reference value, which is the measurement result of the reference light, for the selected requested light color so that it becomes zero, and outputs to the characteristic calculation unit 22 recorded values ​​consisting of the manually fine-tuned operation amount and the corresponding measurement result of the fixture light.

[0113] The reference value setting unit 20 proceeds from step S611 and determines whether or not the processes of steps S603 to S611 have been completed for all requested light colors (step S612).

[0114] When it is determined in step S612 that the processes in steps S603 to S611 have not been completed for all requested light colors (step S612: N), the reference value setting unit 20 selects the next requested light color to be measured. In addition, the reference value setting unit 20 selects the operation amount (SR 1(B) ,SG 1(B) ,SB 1(B) ) to add a certain amount of α (for example, 10%) to the required light color (for example, G component) to create a new operation amount (SR 1(B) ,SG 1(B) +α,SB 1(B) Then, the reference value setting unit 20 sets the new manipulated variable (SR 1(B) ,SG 1(B) +α,SB 1(B) ) to the lighting processing device 3-1 (step S613), and the process proceeds to step S603.

[0115] As a result, the processes of steps S603 to S611 are performed for the next requested light color, and in step S611, manual fine adjustment of the operation amount of the requested light color is performed for all lighting fixtures for that requested light color.

[0116] Then, the processing of steps S603 to S611 is performed for all requested light colors, and manual fine adjustment of the operation amount of the requested light color is completed for all lighting fixtures for all requested light colors. Therefore, in accordance with the change in the operation amount of lighting fixture 4-1, which is the reference lighting fixture, the measurement results of the fixture light of lighting fixture 4-2, ... can be made to follow the reference value, which is the measurement result of the fixture light of lighting fixture 4-1.

[0117] If the reference value setting unit 20 determines in step S612 that the processes in steps S603 to S611 have been completed for all requested light colors (step S612: Y), the reference value setting unit 20 proceeds to step S614.

[0118] The characteristic calculation unit 22 receives from the first lighting processing unit 10 recorded values ​​consisting of the operation amounts and the measurement results of the fixture light of the lighting fixtures 4-1, 4-2, ... when the color of the ambient light matches the measurement results of the fixture light of the lighting fixtures 4-1, 4-2, ....

[0119] Specifically, the characteristic calculation unit 22 receives the operation amount (SR 1(B) ,SG 1(B) ,SB 1(B) ) and the corresponding measurement results of the instrument light (R 1(B) ,G 1(B) ,B 1(B) ), the operation amount of lighting fixture 4-2 (SR 2(B) ,SG 2(B) ,SB 2(B) ) and the corresponding measurement results of the instrument light (R 2(B) ,G 2(B) ,B 2(B) ), ···, and enter the recorded value.

[0120] In addition, the characteristic calculation unit 22 inputs from the reference value setting unit 20, for each requested light color, a recorded value consisting of the operation amount +α and the corresponding measurement result of the reference light when the operation amount of the requested light color of the reference lighting device 4-1 is changed to the operation amount +α.

[0121] Specifically, when the R component is selected as the desired light color from reference value setting unit 20, characteristic calculation unit 22 calculates the operation amount (SR 1(B) +α,SG 1(B) ,SB 1(B) ) and the corresponding measurement results of the reference light (R 1(B+α) ,G 1(B) ,B 1(B) Similarly, when the G component is selected as the desired light color, the characteristic calculation unit 22 inputs the operation amount (SR 1(B) ,SG 1(B) +α,SB 1(B) ) and the corresponding measurement results of the reference light (R 1(B) ,G 1(B+α) ,B 1(B) Similarly, when the B component is selected as the desired light color, the characteristic calculation unit 22 inputs the operation amount (SR 1(B) ,SG 1(B) ,SB 1(B) +α) and the corresponding measurement results of the reference light (R 1(B) ,G 1(B) ,B 1(B+α) ) and enter the recorded value.

[0122] Furthermore, the characteristic calculation unit 22 inputs from the measurement unit 21 recorded values ​​consisting of manually fine-tuned operation amounts and corresponding measurement results of the fixture light for each of all lighting fixtures 4-2, ... other than lighting fixture 4-1, which are controlled so that the difference between the measurement value of the fixture light of that lighting fixture and a reference value, which is the measurement result of the reference light, is zero for each requested light color.

[0123] Specifically, when the R component is selected as the requested light color from the measurement unit 21, the characteristic calculation unit 22 calculates the operation amount (SR 2(B) +α R2 ,SG 2(B) ,SB 2(B) ) and the corresponding measurement results of the instrument light (R 2(B+α) ,G 2(B) ,B 2(B)), and the operation amount (SR 3(B) +α R3 ,SG 3(B) ,SB 3(B) ) and the corresponding measurement results of the instrument light (R 3(B+α) ,G 3(B) ,B 3(B) ), ···, and enter the recorded value.

[0124] Similarly, when the G component is selected as the requested light color, for example, the characteristic calculation unit 22 calculates the operation amount (SR 2(B) ,SG 2(B) +α G2 ,SB 2(B) ) and the corresponding measurement results of the instrument light (R 2(B) ,G 2(B+α) ,B 2(B) ), and the operation amount (SR 3(B) ,SG 3(B) +α G3 ,SB 3(B) ) and the corresponding measurement results of the instrument light (R 3(B) ,G 3(B+α) ,B 3(B) ), ···, and enter the recorded value.

[0125] Similarly, when, for example, the B component is selected as the requested light color, the characteristic calculation unit 22 calculates the operation amount (SR 2(B) ,SG 2(B) ,SB 2(B) +α B2 ) and the corresponding measurement results of the instrument light (R 2(B) ,G 2(B) ,B 2(B+α) ), and the operation amount (SR 3(B) ,SG 3(B) ,SB 3(B) +α B3 ) and the corresponding measurement results of the instrument light (R 3(B) ,G 3(B) ,B3(B+α) ), ···, and enter the recorded value.

[0126] Then, the characteristic calculation unit 22 calculates the slope of the characteristic for each requested light color for each of the lighting fixtures 4-1, 4-2, ... based on these recorded values, and outputs this as characteristic information to the second lighting processing unit 12 (step S614).

[0127] For example, when calculating the slope of the R component of the fixture light from lighting device 4-1, characteristic calculation unit 22 may use the operation amount (SR 1(B) ,SG 1(B) ,SB 1(B) ) and the corresponding measurement results of the instrument light (R 1(B) ,G 1(B) ,B 1(B) ), and the operation amount (SR 1(B) +α,SG 1(B) ,SB 1(B) ) and the corresponding measurement results of the reference light (R 1(B+α) ,G 1(B) ,B 1(B) ) is used.

[0128] Furthermore, when calculating the slope of the R component of the fixture light from lighting device 4-2, characteristic calculation unit 22 uses the operation amount (SR 2(B) ,SG 2(B) ,SB 2(B) ) and the corresponding measurement results of the instrument light (R 2(B) ,G 2(B) ,B 2(B) ) (where R 1(B) =R 2(B) = ,G 1(B) =G 2(B) = ,B 1(B) =B 2(B) = ), and the manually fine-tuned operation amount (SR 2(B)+α R2 ,SG 2(B) ,SB 2(B) ) and the corresponding measurement results of the instrument light (R 2(B+α) ,G 2(B) ,B 2(B) ) is used.

[0129] Then, based on the slope of the characteristics for each requested light color of the lighting fixtures 4-1, 4-2, ..., characteristic calculation unit 22 calculates a parameter x R1 , and parameter x R2 ,x R3 , . . . Then, the characteristic calculation unit 22 calculates the parameter x R1 ,x R2 ,x R3 , . . . are output to the second illumination processing unit 12 as characteristic information.

[0130] When an operation to change the fixture light is performed, for example when the operation amount of lighting fixture 4-1 is changed, second lighting processing unit 12 uses the slope of the characteristics for each requested light color in lighting fixtures 4-1, 4-2, ... included in the characteristic information to identify an operation amount for each lighting fixture 4-1, 4-2, ... so as to result in the same color corresponding to the change in the operation amount of lighting fixture 4-1, and outputs the identified operation amount to the lighting processing devices 3-1, 3-2, ....

[0131] This makes it possible to realize an environment with a consistent overall color tone in response to changes in the lighting of the fixtures.

[0132] As described above, according to the lighting control device 1 of the embodiment of the present invention, when an environment with a uniform color tone overall is realized in accordance with the ambient light, the reference value setting unit 20 of the fixture light characteristic measurement unit 11 changes the operation amount of the lighting fixture 4-1, which is the reference lighting fixture, to operation amount + α, and sets the measurement result of the fixture light at that time to the reference value.

[0133] The measurement unit 21 calculates the operation amount for the lighting fixtures 4-2,... by controlling the lighting fixtures 4-2,... so as to make the difference between the measurement result of the fixture light and the reference value zero, and causes the lighting fixtures to emit fixture light corresponding to the operation amount. Then, the lighting operator OP fine-tunes the fixture light (fine-adjusts the operation amount) for the other lighting fixtures 4-2,...

[0134] In this way, by utilizing the linear change in the fixture light of the lighting fixtures 4-1, 4-2, ..., even if the fixture light of the reference lighting fixture 4-1 is changed, a consistent color environment can be achieved through seamless control across the lighting fixtures 4-1, 4-2, ...

[0135] The characteristic calculation unit 22 calculates a slope of the characteristic for each of the lighting fixtures 4-1, 4-2, ... for each requested light color (e.g., a parameter x R1 ,x R2 ,x R3 , , ) is calculated and used as the characteristic information.

[0136] The second lighting processing unit 12 uses the characteristic information to identify an operation amount for each of the lighting fixtures 4-1, 4-2, ... so that the color of the fixture light corresponds to the change, and causes the lighting fixtures 4-1, 4-2, ... to emit fixture light corresponding to the identified operation amount.

[0137] In this way, by utilizing the linear change in the fixture light of the lighting fixtures 4-1, 4-2, ..., it is possible to realize an environment with a unified color tone overall in response to changes in the fixture light. In other words, it is possible to minimize individual differences in the operation of the multiple lighting fixtures 4-1, 4-2, ... and perform seamless color light control, enabling lighting control that does not take into account individual differences between the lighting fixtures 4-1, 4-2, ...

[0138] Therefore, even if the light emitted by the lighting fixtures is changed, seamless control can be achieved in response to scene changes during a program, and an environment with a consistent color tone can be achieved overall.

[0139] Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above-described embodiments and can be modified in various ways without departing from the technical concept thereof.

[0140] In the embodiment, reference value setting section 20 of fixture light characteristics measurement section 11 of lighting control device 1 selects lighting fixture 4-1 from lighting fixtures 4-1, 4-2, ..., and sets this as the reference lighting fixture. However, reference value setting section 20 may also select any one of lighting fixtures 4-2, ..., other than lighting fixture 4-1, as the reference lighting fixture.

[0141] In addition, when the operation amount of lighting fixture 4-1 is changed, second lighting processing unit 12 of the lighting control device 1 determines the operation amount of lighting fixtures 4-2, ... based on the characteristic information so that the color of the light from lighting fixture 4-1 becomes the same color (RGB value) as the change in the operation amount of lighting fixture 4-1.

[0142] In contrast, when the operation amount of any of the lighting fixtures 4-2, ... other than lighting fixture 4-1 is changed, the second lighting processing unit 12 may be configured to determine, based on the characteristic information, the operation amount for each of the other lighting fixtures 4-1, 4-2, ... so that the color corresponding to the change in the operation amount of any of the lighting fixtures 4-2, ... other than lighting fixture 4-1 is the same as that of the lighting fixture 4-1.

[0143] A normal computer can be used as the hardware configuration of the lighting control device 1 according to the embodiment of the present invention. The lighting control device 1 is configured by a computer including a CPU, a volatile storage medium such as a RAM, a non-volatile storage medium such as a ROM, an interface, etc.

[0144] The functions of the first lighting processing unit 10, the fixture light characteristic measuring unit 11 and the second lighting processing unit 12 provided in the lighting control device 1 are each realized by causing a CPU to execute a program in which these functions are written.

[0145] These programs are stored in the storage medium and are read and executed by the CPU. These programs can also be distributed by storing them in a storage medium such as a magnetic disk (floppy disk, hard disk, etc.), an optical disk (CD-ROM, DVD, etc.), or a semiconductor memory, and can also be transmitted and received via a network. [Explanation of symbols]

[0146] 1 Lighting control device 2-0,2-1 Ambient light measurement device 3-1, 3-2, 3-3 Lighting processing equipment 4-1, 4-2, 4-3 Lighting equipment 10 First lighting processing section 11. Light characteristic measurement unit for fixtures 12 Second lighting processing section 20 Reference value setting section 21 Measuring part 22 Characteristics calculation section 30-2, 30-3 Fixture light control section 31-2,31-3 Operation amount adjustment section 40 Subtraction section 41 Control section 42 Switching section

Claims

1. A lighting control device that controls the light emission color of multiple lighting fixtures to realize an environment with a unified color tone overall, a first lighting processing unit that performs control to set a difference between a measurement result of the fixture light and a color of the ambient light for each of the plurality of lighting fixtures to zero; changing an operation amount for a predetermined reference lighting device among the plurality of lighting devices in a state in which a difference between the measurement result of the fixture light and the color of the ambient light is minimized under the control of the first lighting processing unit, and setting the measurement result of the fixture light corresponding to the changed operation amount as a reference value; calculating an operation amount for each of the other lighting fixtures among the plurality of lighting fixtures by controlling the difference between the measurement result of the fixture light and the reference value to be zero, and emitting the fixture light based on the operation amount; a fixture light characteristic measurement unit that determines a characteristic indicative of a relationship between an operation amount and a fixture light value for each of the plurality of lighting devices, based on an operation amount and a fixture light measurement result of each of the plurality of lighting devices in a state in which a difference between the fixture light measurement result and the color of the ambient light is minimum under the control of the first lighting processing unit, an operation amount and a fixture light measurement result of the reference lighting device when the reference value is set, and an operation amount and a fixture light measurement result of each of the other lighting devices when a difference between the fixture light measurement result and the reference value is minimum; a second lighting processing unit that, when an operation amount of any of the plurality of lighting devices is changed, identifies an operation amount for each of the other lighting devices among the plurality of lighting devices based on the characteristics determined by the lighting characteristic measurement unit so that the color of the lighting device light is the same as a color of the lighting device light resulting from the change in the operation amount of any of the plurality of lighting devices, and causes the other lighting devices to emit lighting at the operation amount; A lighting control device comprising:

2. 2. The lighting control device according to claim 1, A lighting control device, characterized in that the characteristic is a gradient of the value of the fixture light with respect to the amount of operation.

3. 2. The lighting control device according to claim 1, a control unit for controlling a lighting condition of the lighting device when the light intensity of the lighting devices changes by the same value, the control unit being operable to control a control amount of the lighting device in response to a change in the control amount of the reference lighting device;

4. A computer constituting a lighting control device that controls the emission color of a plurality of lighting fixtures and realizes an environment with a unified color tone as a whole, a first lighting processing unit that performs control to set a difference between a measurement result of the fixture light and a color of the ambient light for each of the plurality of lighting fixtures to zero; changing an operation amount for a predetermined reference lighting device among the plurality of lighting devices in a state in which a difference between the measurement result of the fixture light and the color of the ambient light is minimized under the control of the first lighting processing unit, and setting the measurement result of the fixture light corresponding to the changed operation amount as a reference value; calculating an operation amount for each of the other lighting fixtures among the plurality of lighting fixtures by controlling the difference between the measurement result of the fixture light and the reference value to be zero, and emitting the fixture light based on the operation amount; a fixture light characteristic measurement unit that determines a characteristic indicative of a relationship between an operation amount and a fixture light value for each of the plurality of lighting devices, based on an operation amount and a fixture light measurement result of each of the plurality of lighting devices in a state in which a difference between the fixture light measurement result and the color of the ambient light is minimum under the control of the first lighting processing unit, an operation amount and a fixture light measurement result of the reference lighting device when the reference value is set, and an operation amount and a fixture light measurement result of each of the other lighting devices when a difference between the fixture light measurement result and the reference value is minimum; and a program for causing a lighting device to function as a second lighting processing unit that, when an operation amount of any of the plurality of lighting devices is changed, identifies an operation amount for each of the other lighting devices among the plurality of lighting devices based on the characteristics determined by the fixture light characteristic measurement unit so that the color of the fixture light obtained by changing the operation amount of any of the plurality of lighting devices is the same as the color of the fixture light obtained by changing the operation amount of any of the plurality of lighting devices, and causes the lighting device to emit the fixture light at the operation amount.

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