WO2021020050A1 - Illumination system - Google Patents

Illumination system Download PDF

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Publication number
WO2021020050A1
WO2021020050A1 PCT/JP2020/026606 JP2020026606W WO2021020050A1 WO 2021020050 A1 WO2021020050 A1 WO 2021020050A1 JP 2020026606 W JP2020026606 W JP 2020026606W WO 2021020050 A1 WO2021020050 A1 WO 2021020050A1
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WO
WIPO (PCT)
Prior art keywords
illuminance
image
projector
projection surface
lighting device
Prior art date
Application number
PCT/JP2020/026606
Other languages
French (fr)
Japanese (ja)
Inventor
達也 奥野
山内　健太郎
友未 藤原
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2021020050A1 publication Critical patent/WO2021020050A1/en

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/155—Coordinated control of two or more light sources
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Definitions

  • the present invention relates to a lighting system.
  • Patent Document 1 discloses a lighting system capable of obtaining a lighting environment in which a user can comfortably perform visual work while projecting an image using an optical projection device and using an effect.
  • the present invention provides a lighting system capable of achieving both visibility of an image and ensuring brightness in the space on which the image is projected.
  • the lighting system includes a projector that projects an image in which a subject is represented by shadows on a projection surface in at least a part of the area, and an illumination device that irradiates the projection surface with illumination light.
  • the illuminance of the image is 0.3 times or more and 55 times or less the illuminance of the illumination light.
  • the lighting system of the present invention can achieve both the visibility of an image and the securing of brightness in the space on which the image is projected.
  • FIG. 1 is a diagram showing an outline of a lighting system according to an embodiment.
  • FIG. 2 is a block diagram showing a functional configuration of the lighting system according to the embodiment.
  • FIG. 3 is a diagram for explaining an outline of an experiment relating to subjective evaluation.
  • FIG. 4 is a graph showing a graph of the results of an experiment relating to subjective evaluation.
  • FIG. 5 is a diagram showing a table summarizing the results of experiments on subjective evaluation.
  • FIG. 6 is a flowchart of an operation example 1 of the lighting system according to the embodiment.
  • FIG. 7 is a flowchart of an operation example 2 of the lighting system according to the embodiment.
  • each figure is a schematic diagram and is not necessarily exactly illustrated. Further, in each figure, substantially the same configuration may be designated by the same reference numerals, and duplicate description may be omitted or simplified.
  • FIG. 1 is a diagram showing an outline of a lighting system according to an embodiment.
  • FIG. 2 is a block diagram showing a functional configuration of the lighting system according to the embodiment.
  • the lighting system 100 includes a projector 10, two lighting devices 20, a control device 30, and an illuminance sensor 40.
  • the lighting system 100 may include at least one lighting device 20.
  • the lighting system 100 is a system capable of projecting an image by the projector 10 and irradiating the illumination light by the lighting device 20 in parallel in the space 50 in which the projector 10 and the lighting device 20 are installed.
  • the space 50 is, for example, a closed space such as a room.
  • the image projected by the projector 10 is, for example, a monochrome image that imitates the shadow of a tree (in other words, a monochrome image of sunlight through the trees). Such an image is used, for example, to produce a space.
  • the illuminance on the projection surface of the image needs to be, for example, less than 50 lux.
  • the inventors have found a predetermined condition regarding the illuminance described later.
  • the image when an image in which the subject is represented by shading in at least a part of the area is projected, such as a monochrome image imitating the shadow of a tree, the image is as long as this predetermined condition is satisfied. Even if the projection surface of the above is brightened by the illumination light emitted by the illumination device 20, the visibility of the image is ensured. For example, it is permissible for the illuminance on the projection surface of the image to be 50 lux or more.
  • the lighting system 100 can achieve both the visibility of the image and the securing of the brightness in the space where the image is projected. In other words, it is possible to produce an image while the space 50 is in a bright state. According to the lighting system 100, the range of use of the image for production can be expanded to a space 50 such as an office or a hospital where brightness is required. Further, the illumination system 100 can easily realize the production of light with improved color rendering by irradiating the projection surface of the image with illumination light having high color rendering.
  • the projector 10 is installed on the ceiling or wall of the space 50.
  • the projector 10 includes a light source and an image element such as a transmissive liquid crystal panel, a micromirror array, or a reflective liquid crystal panel that modulates the light emitted by the light source, and is provided in the space 50 (wall surface, floor surface, or ceiling). Project the image on a surface, etc.).
  • the projector 10 projects an image for production having a contrast ratio lower than that of a general image.
  • the image for such a production is, for example, a monochrome image (in other words, a grayscale image) that imitates the shadow of a tree, but may be an image expressed in a monochromatic shade other than black, or a color. It may be a video.
  • the contrast ratio of the image for production is, for example, 100: 1 or less.
  • the contrast ratio is a physical quantity indicating how many times the brightness of the brightest part (white) is, when the darkest part (black) of the image is 1.
  • the contrast ratio is 100: 1 or less, it means that the brightest part is 100 or less when the darkest part of the image is 1. That is, when the contrast ratio is 100: 1 or less, it means that the contrast ratio is 50: 1 or the like.
  • the projector 10 is controlled based on the control signal transmitted from the control device 30, but it can also be controlled by the user operating a dedicated remote controller or the like. Specifically, the image projected on the projector 10, the contrast of the image, the brightness of the image, the shape of the image (trapezoidal distortion), and the like can be changed.
  • the lighting device 20 is installed in the space 50 in which the projector is installed, and illuminates the projection surface (floor surface in FIG. 1) on which the projector 10 projects an image.
  • the illuminating device 20 irradiates the illumination light on the area on which the image of the projection surface is projected.
  • the lighting device 20 is, for example, a downlight embedded in the ceiling or wall of the space 50, but the specific embodiment of the lighting device 20 is not particularly limited.
  • the lighting device 20 may be a ceiling light installed on the ceiling of the space 50, or may be a spotlight installed on the ceiling or the wall of the space 50.
  • the average color rendering index (Ra) of the lighting device 20 is, for example, 80 or more. That is, the lighting device 20 has a relatively high color rendering property.
  • the light emitting state of the lighting device 20 is controlled based on the control signal transmitted from the control device 30, but it can also be controlled by the user operating a dedicated remote controller or the like.
  • the light emission state control here includes, for example, lighting / extinguishing switching control, dimming control (in other words, dimming rate (0% to 100%) control), toning control, and light distribution control. Is included.
  • the lighting device 20 includes, for example, a light emitting module in which a plurality of LED elements are mounted on a substrate.
  • the plurality of LED elements include a first LED element that emits white light having a relatively low color temperature (for example, light bulb color) and a second LED that emits white light having a relatively high color temperature (for example, neutral white). Elements and are included.
  • the emission brightness of the first LED element and the second LED element is controlled independently. As a result, the dimming function and the toning function of the lighting device 20 are realized.
  • the specific mode of the light emitting module is not particularly limited, and the light emitting module is a light emitting module in which a plurality of LED elements are mounted on a substrate, and each of the plurality of LED elements is a red LED chip or a blue LED. It may be a light emitting module including a chip and a green LED chip, and the brightness of each LED chip can be controlled independently. Further, the light emitting module is not limited to a light emitting module using an LED element, and may be a light emitting module using a semiconductor light emitting element such as a semiconductor laser, or a solid light emitting element such as an organic EL (Electro Luminescence) or an inorganic EL. ..
  • a semiconductor light emitting element such as a semiconductor laser
  • a solid light emitting element such as an organic EL (Electro Luminescence) or an inorganic EL. ..
  • the lighting device 20 does not have a function of projecting an image. Specifically, the lighting device 20 does not include an image element such as a transmissive liquid crystal panel, a micromirror array, or a reflective liquid crystal panel included in the projector 10.
  • an image element such as a transmissive liquid crystal panel, a micromirror array, or a reflective liquid crystal panel included in the projector 10.
  • the control device 30 controls the projector 10 and the lighting device 20.
  • the control device 30 is a device separate from the projector 10 and the lighting device 20, it may be integrated with one device of the projector 10 and the lighting device 20 and incorporated in the one device.
  • the control device 30 includes a communication unit 31, a control unit 32, a storage unit 33, and an operation reception unit 34.
  • the communication unit 31 is a communication circuit for the control device 30 to communicate with the projector 10, the lighting device 20, and the illuminance sensor 40 via the local communication network.
  • the communication performed by the communication unit 31 may be wired communication or wireless communication.
  • the communication standard for communication performed by the communication unit 31 is not particularly limited.
  • the control unit 32 controls the projector 10 and the lighting device 20 by causing the communication unit 31 to transmit a control signal.
  • the control unit 32 is realized by, for example, a microcomputer, but may be realized by a processor.
  • the storage unit 33 is a storage device that stores a program executed by the control unit 32. Specifically, the storage unit 33 is realized by a semiconductor memory or the like.
  • the operation reception unit 34 is a user interface device that accepts user operations.
  • the operation reception unit 34 is realized by a touch panel, a hardware button, or the like. It is not essential that the control device 30 includes the operation reception unit 34, and even if a mobile terminal on which a dedicated application program is installed and capable of communicating with the communication unit 31 is used as the operation reception unit 34. Good.
  • the mobile terminal is a smartphone or a tablet terminal.
  • the illuminance sensor 40 senses the illuminance of the projection surface (floor surface in the example of FIG. 1) on which an image is projected by the projector 10.
  • the illuminance sensor 40 is integrated with the lighting device 20 and is built in the lighting device 20, but may be integrated with the projector 10 and built in the projector 10. Further, the illuminance sensor 40 is separate from both the projector 10 and the lighting device 20, and may be installed at a position different from that of the projector 10 and the lighting device 20, for example, a projection surface.
  • the illuminance sensor 40 may be installed on the floor material or the wall material.
  • FIG. 3 is a diagram for explaining an outline of an experiment relating to such subjective evaluation.
  • FIG. 3 (a) shows the environment in which the experiment was performed, and
  • FIG. 3 (b) shows the image used for the evaluation.
  • an image (FIG. 3B) was projected from a projector 10 installed on the ceiling onto a projection surface (wall surface), and 15 subjects were selected. We asked each of them to subjectively evaluate whether or not the visibility of the image was acceptable.
  • the projection surface is irradiated with light not only from the image but also from the lighting device 20 installed on the desk, and by controlling the lighting device 20, the illuminance on the projection surface (that is, the environmental illuminance) is changed to improve the visibility of the image.
  • the subjects were asked to subjectively evaluate whether or not it was acceptable.
  • the subjective evaluation of whether or not the visibility of the image is acceptable when the brightness is gradually increased from the state where the lighting device 20 is off that is, the environmental illuminance is zero
  • the lighting device 20 is the maximum.
  • One subject was asked to perform a subjective evaluation of whether the visibility of the image when the brightness was gradually reduced from the state of the brightness of the above was acceptable three times.
  • FIG. 4 is a graph showing a graph of the results of an experiment relating to such subjective evaluation.
  • the vertical axis indicates what percentage of the evaluated persons evaluated that the visibility of the image is acceptable
  • the horizontal axis indicates the illuminance of the projection surface (that is, the environmental illuminance) caused by the light emitted by the illuminating device 20. Is shown.
  • the illuminance of the image on the projection surface (that is, the illuminance of the image on the projection surface when the lighting device 20 is off) is 183 lux.
  • FIG. 5 is a diagram showing a table summarizing the results of experiments on subjective evaluation.
  • the illuminance of the image on the projection surface is 0.3 times or more the illuminance of the illumination light (image brightness 183 lux / environmental illuminance 550 lux), 25% or more of the subjects are images. Visibility can be tolerated. It is more preferable that the illuminance of the image on the projection surface is 0.5 times or more the illuminance of the illumination light (image brightness 183 lux / environmental illuminance 366 lux), and 50% or more of the subjects allow the image visibility. be able to.
  • the illuminance of the image on the projection surface is 0.9 times or more the illuminance of the illumination light (image brightness 183 lux / environmental illuminance 202 lux), 75% or more of the subjects allow the image visibility. be able to.
  • the illuminance is, in other words, the amount of luminous flux per unit area.
  • the visibility of the image is good when the illuminance of the image on the projection surface is sufficiently higher than the illuminance of the illumination light.
  • the maximum illuminance of the image that can be projected by the existing projector 10 is about 10000 lux
  • the illuminance of the image on the projection surface is 55 times or less (brightness of the image 10000 lux / environmental illuminance 202 lux) of the illuminance of the illumination light. It becomes. If the illuminance of the image on the projection surface is less than 1 times the illuminance of the illumination light, the illuminance of the image is lower than the illuminance of the illumination light. Such a configuration is not generally adopted.
  • the content of the projection surface is sunbeams this time, the above effect can be obtained in the same way with shadow expression based on arbitrary natural phenomena such as water surface and ripples, and the user is projected from the projector 10.
  • the content can be freely selected.
  • control such as changing the above content, changing the playback speed, changing the hue, and changing the brightness may be performed depending on the time. These may be performed by the user's operation or may be performed automatically. At this time, it is preferable because the design and comfort of the space are enhanced.
  • the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less the illuminance of the illumination light (hereinafter, the conditions relating to this illuminance are predetermined conditions.
  • the illuminance of the image and the illumination light are set at the time of installation (at the time of construction) of the lighting system 100 so as to be described as).
  • the lighting system 100 can illuminate the space 50 while ensuring the visibility of the image in the space 50.
  • the illuminance of the image is 0.3 times or more the illuminance of the illumination light 55.
  • the visibility of the image can be ensured by controlling the projector 10 and the lighting device 20 so as to be twice or less.
  • the lighting system 100 selectively selects, for example, a normal mode operation in which the user can freely change the brightness of the image projected by the projector 10 and the brightness of the illumination light emitted by the lighting device 20 and an operation in the effect mode. To run. In the operation of the effect mode, the projector 10 and the lighting device 20 are controlled so that the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less the illuminance of the illumination light.
  • FIG. 6 is a flowchart of operation example 1 of the lighting system 100.
  • the operation reception unit 34 of the control device 30 receives from the user an operation for projecting the illumination light onto the projection surface by the illumination device 20 (S11).
  • the control unit 32 irradiates the lighting device 20 (more specifically, each of the two lighting devices) with the illumination light based on the operation received by the operation reception unit 34 (S12).
  • the control unit 32 causes the communication unit 31 to transmit a control signal to the lighting device 20 to irradiate the lighting device 20 with illumination light.
  • the projection surface is irradiated with illumination light having a desired illuminance of the user.
  • the illuminance sensor 40 senses the illuminance of the illumination light irradiating the projection surface (S13), and communicates the first illuminance information indicating the illuminance of the illumination light irradiating the projection surface as a result of the sensing with the control device 30. It is transmitted to the unit 31.
  • the control unit 32 stores the first illuminance information received by the communication unit 31 in the storage unit 33 (S14), and the illuminance on the projection surface of the image projected by the projector 10 based on the received first illuminance information.
  • the permissible range is calculated (S15). As described above, the permissible range of illuminance of the image is 0.3 times or more and 55 times or less of the illuminance indicated by the first illuminance information.
  • the lighting system 100 always makes the illuminance of the image 0.3 times or more the illuminance indicated by the first illuminance information against the change of the layout of the lighting equipment and the space and the change of the environmental illuminance of the space due to the time and the weather change. It is preferable because it keeps 55 times or less.
  • the operation reception unit 34 receives from the user an operation for projecting an image on the projection surface by the projector 10 (S16).
  • the control unit 32 projects an image on the projector 10 based on the operation received by the operation reception unit 34 (S17). Specifically, the control unit 32 causes the communication unit 31 to transmit a control signal to the projector 10 to project an image on the projector 10. As a result, an image of the user's desired illuminance is projected on the projection surface.
  • the illuminance sensor 40 senses the illuminance of the projection surface (that is, the illuminance obtained by combining the illuminance of the image and the illuminance of the illumination light) (S18), and controls the second illuminance information indicating the illuminance of the projection surface as a result of the sensing. It is transmitted to the communication unit 31 of 30.
  • the control unit 32 stores the second illuminance information received by the communication unit 31 in the storage unit 33 (S19).
  • the control unit 32 shifts from the illuminance indicated by the second illuminance information stored in the storage unit 33 in step S19 to the storage unit 33 in step S14.
  • the illuminance of the image on the projection surface is calculated by subtracting the illuminance indicated by the stored first illuminance information (S21). Then, the control unit 32 determines whether or not the illuminance of the image on the projection surface is within the permissible range calculated in step S15 (S22).
  • the control unit 32 determines that the illuminance of the image on the projection surface is within the allowable range calculated in step S15 (Yes in S22), the control unit 32 stores the setting information indicating the current settings of the projector 10 and the lighting device 20. It is stored in (S23). That is, the storage unit 33 stores the setting information of the projector 10 and the lighting device 20 when the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less the illuminance of the illumination light. After that, when the operation reception unit 34 receives the user's operation instructing the effect mode, the control unit 32 controls the projector 10 and the lighting device 20 based on the setting information stored in the storage unit 33.
  • control unit 32 determines that the illuminance of the image on the projection surface is out of the permissible range calculated in step S15 (No in S22), the control unit 32 does not store the setting information in the storage unit 33. In this case, the user is notified that the setting is out of the permissible range, and the user redoes the setting.
  • the lighting system 100 selectively stores only the setting information such that the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less of the illuminance of the illumination light in the storage unit 33. Can be remembered.
  • the illuminance of the projection surface was measured by the illuminance sensor 40, but it is not essential that the illuminance sensor 40 measures the illuminance of the projection surface.
  • the user may manually measure the illuminance of the projection surface in a state where only the lighting device 20 of the projector 10 and the lighting device 20 is emitting light with an illuminometer.
  • the user can store the first illuminance information in the storage unit 33 by performing the manually measured illuminance input operation on the operation reception unit 34.
  • the control unit 32 calculates an allowable range of illuminance on the projection surface of the image projected by the projector 10 based on the stored first illuminance information.
  • the permissible range of illuminance of the image is 0.3 times or more and 55 times or less of the illuminance indicated by the first illuminance information.
  • a user who is unfamiliar with video equipment such as a projector for example, a contractor who specializes in the construction of a lighting device, can easily perform initial setting of the system without separately setting the output conditions of the projector 10. Therefore, it is preferable.
  • the lighting system 100 operates in the effect mode (S31). At this time, the predetermined condition that the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less the illuminance of the illumination light is satisfied.
  • the operation reception unit 34 receives an operation from the user for changing the illuminance of the image projected by the projector 10 (S32).
  • the control unit 32 determines whether or not the predetermined condition is satisfied when the illuminance of the image projected by the projector 10 is changed based on this operation (S33). For example, as described in the above operation example 1, if the illuminance of the image during the operation of the effect mode and the illuminance of the illumination light are stored in the storage unit 33 based on the illuminance information transmitted by the illuminance sensor 40. , The control unit 32 can estimate the illuminance of the changed image and determine whether or not the estimated illuminance of the changed image satisfies a predetermined condition.
  • control unit 32 determines that the predetermined condition is satisfied when the illuminance of the image projected by the projector 10 is changed based on the above operation (Yes in S33), the control unit 32 changes the illuminance of the image projected by the projector 10 (Yes). S34). That is, the control unit 32 controls the projector 10 according to the user's instruction. At this time, the lighting device 20 is not particularly controlled.
  • the control unit 32 determines that the predetermined condition is not satisfied when the illuminance of the image projected by the projector 10 is changed based on the above operation (No in S33), the projector 10 decides based on the above operation.
  • the illuminance of the projected image is changed (S35), and the illuminance of the illumination light emitted by the lighting device 20 is changed so that a predetermined condition is satisfied (S36). That is, the control unit 32 controls the projector 10 according to the user's instruction, and controls the lighting device 20 so that a predetermined condition is satisfied.
  • the lighting device 20 irradiates the projector 10 while controlling the projector 10 according to the user's instruction.
  • a predetermined condition can be satisfied. That is, the lighting system 100 ensures the visibility of the image by interlockingly controlling the projector 10 and the lighting device 20.
  • the control unit 32 controls the one device according to the user's instruction, and , The other device of the projector 10 and the lighting device 20 may be controlled so as to satisfy a predetermined condition.
  • the lighting system 100 may invalidate the user's operation such that the predetermined condition is not satisfied during the operation of the effect mode.
  • the lighting system 100 includes a projector 10 that projects an image in which a subject is represented by shadows on a projection surface in at least a part of the area, and an illumination device 20 that irradiates the projection surface with illumination light.
  • the illuminance of the image is 0.3 times or more and 55 times or less the illuminance of the illumination light.
  • the visibility of an image can be ensured even if the projection surface is brightened by the illumination light. Therefore, the lighting system 100 can achieve both the visibility of the image and the securing of the brightness in the space where the image is projected.
  • the illuminance on the projection surface of the illumination light is 50 lux or more.
  • Such an illumination system 100 can ensure the visibility of a visual image even if the illuminance of the illumination light on the projection surface is 50 lux or more, which is generally considered to be difficult to see.
  • the lighting system 100 further includes a control device 30 that controls the projector 10 and the lighting device 20.
  • the control device 30 has a storage unit 33 that stores setting information of the projector 10 and the lighting device 20 when the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less of the illuminance of the illumination light, and the setting information.
  • a control unit 32 that controls the projector 10 and the lighting device 20 based on the projector 10 is provided.
  • Such a lighting system 100 can control the projector 10 and the lighting device 20 based on the setting information.
  • control unit 32 controls one of the projector 10 and the lighting device 20 according to the user's instruction so that the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less of the illuminance of the illumination light.
  • one device is controlled according to a user's instruction, and the other device of the projector 10 and the lighting device 20 is controlled so that the condition is satisfied.
  • the contrast ratio of the image is 100: 1 or less.
  • Such a lighting system 100 can project an image having a contrast ratio of 100: 1 or less.
  • the average color rendering index of the lighting device 20 is 80 or more.
  • Such an illumination system 100 can irradiate illumination light with high color rendering properties. By supplementarily irradiating the projection surface of the image with such highly color-rendering illumination light, it is possible to produce light with improved color rendering.
  • the video is a monochrome video.
  • Such a lighting system 100 can project a monochrome image.
  • the lighting system is used for the production, but it may be used for purposes other than the production.
  • the lighting system is realized by a plurality of devices, but it may be realized as a single device.
  • the components included in the lighting system described in the above embodiment may be distributed to the plurality of devices in any way.
  • another processing unit may execute the processing executed by the specific processing unit. Further, the order of the plurality of processes may be changed, or the plurality of processes may be executed in parallel.
  • each component may be realized by executing a software program suitable for each component.
  • Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.
  • each component may be realized by hardware.
  • Each component may be a circuit (or integrated circuit). These circuits may form one circuit as a whole, or may be separate circuits from each other. Further, each of these circuits may be a general-purpose circuit or a dedicated circuit.
  • a recording medium such as a system, an apparatus, a method, an integrated circuit, a computer program, or a computer-readable CD-ROM. Further, it may be realized by any combination of a system, an apparatus, a method, an integrated circuit, a computer program and a recording medium.
  • the present invention may be realized as a control device of the above embodiment, or may be realized as a control method of a lighting device executed by a computer such as a control device.
  • the present invention may be realized as a program for causing a computer to execute a control method of a lighting device, or may be realized as a computer-readable non-temporary recording medium in which such a program is recorded.

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  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Projection Apparatus (AREA)

Abstract

An illumination system (100) comprises: a projector (10) that projects, onto a projection surface, an image in which a subject is represented by shading in at least a partial region; and an illumination device (20) that irradiates illumination light onto the projection surface, the illuminance of the image on the projection surface being 0.3-55 times the illuminance of the illumination light.

Description

照明システムLighting system
　本発明は、照明システムに関する。 The present invention relates to a lighting system.
　従来、様々な照明システムが提案されている。特許文献１には、光投影装置を用いて映像を投影して演出を用いながらも、ユーザが快適に視作業を行うことができる照明環境を得ることができる照明システムが開示されている。 Conventionally, various lighting systems have been proposed. Patent Document 1 discloses a lighting system capable of obtaining a lighting environment in which a user can comfortably perform visual work while projecting an image using an optical projection device and using an effect.
特開２０１６－１７０９７２号公報Japanese Unexamined Patent Publication No. 2016-170972
　本発明は、映像の視認性と、映像が投影される空間における明るさの確保とを両立することができる照明システムを提供する。 The present invention provides a lighting system capable of achieving both visibility of an image and ensuring brightness in the space on which the image is projected.
　本発明の一態様に係る照明システムは、少なくとも一部の領域において被写体が陰影によって表現された映像を投影面に投影するプロジェクタと、前記投影面に照明光を照射する照明装置とを備え、前記投影面において、前記映像の照度は、前記照明光の照度の０．３倍以上５５倍以下である。 The lighting system according to one aspect of the present invention includes a projector that projects an image in which a subject is represented by shadows on a projection surface in at least a part of the area, and an illumination device that irradiates the projection surface with illumination light. On the projection surface, the illuminance of the image is 0.3 times or more and 55 times or less the illuminance of the illumination light.
　本発明の照明システムは、映像の視認性と、映像が投影される空間における明るさの確保とを両立することができる。 The lighting system of the present invention can achieve both the visibility of an image and the securing of brightness in the space on which the image is projected.
図１は、実施の形態に係る照明システムの概要を示す図である。FIG. 1 is a diagram showing an outline of a lighting system according to an embodiment. 図２は、実施の形態に係る照明システムの機能構成を示すブロック図である。FIG. 2 is a block diagram showing a functional configuration of the lighting system according to the embodiment. 図３は、主観評価に関する実験の概要を説明するための図である。FIG. 3 is a diagram for explaining an outline of an experiment relating to subjective evaluation. 図４は、主観評価に関する実験の結果のグラフを示す図である。FIG. 4 is a graph showing a graph of the results of an experiment relating to subjective evaluation. 図５は、主観評価に関する実験の結果をまとめた表を示す図である。FIG. 5 is a diagram showing a table summarizing the results of experiments on subjective evaluation. 図６は、実施の形態に係る照明システムの動作例１のフローチャートである。FIG. 6 is a flowchart of an operation example 1 of the lighting system according to the embodiment. 図７は、実施の形態に係る照明システムの動作例２のフローチャートである。FIG. 7 is a flowchart of an operation example 2 of the lighting system according to the embodiment.
　以下、実施の形態について、図面を参照しながら具体的に説明する。なお、以下で説明する実施の形態は、いずれも包括的または具体的な例を示すものである。以下の実施の形態で示される数値、形状、材料、構成要素、構成要素の配置位置及び接続形態、ステップ、ステップの順序などは、一例であり、本発明を限定する主旨ではない。また、以下の実施の形態における構成要素のうち、独立請求項に記載されていない構成要素については、任意の構成要素として説明される。 Hereinafter, the embodiment will be specifically described with reference to the drawings. It should be noted that all of the embodiments described below are comprehensive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components, steps, the order of steps, and the like shown in the following embodiments are examples, and are not intended to limit the present invention. Further, among the components in the following embodiments, the components not described in the independent claims will be described as arbitrary components.
　なお、各図は模式図であり、必ずしも厳密に図示されたものではない。また、各図において、実質的に同一の構成に対しては同一の符号を付し、重複する説明は省略または簡略化される場合がある。 Note that each figure is a schematic diagram and is not necessarily exactly illustrated. Further, in each figure, substantially the same configuration may be designated by the same reference numerals, and duplicate description may be omitted or simplified.
　（実施の形態）
　［照明システムの概要］
　まず、実施の形態に係る照明システムの構成について説明する。図１は、実施の形態に係る照明システムの概要を示す図である。図２は、実施の形態に係る照明システムの機能構成を示すブロック図である。 (Embodiment)
[Outline of lighting system]
First, the configuration of the lighting system according to the embodiment will be described. FIG. 1 is a diagram showing an outline of a lighting system according to an embodiment. FIG. 2 is a block diagram showing a functional configuration of the lighting system according to the embodiment.
　照明システム１００は、プロジェクタ１０と、２つの照明装置２０と、制御装置３０と、照度センサ４０とを備える。照明システム１００は、少なくとも１つの照明装置２０を備えていればよい。 The lighting system 100 includes a projector 10, two lighting devices 20, a control device 30, and an illuminance sensor 40. The lighting system 100 may include at least one lighting device 20.
　照明システム１００は、プロジェクタ１０及び照明装置２０が設置された空間５０において、プロジェクタ１０による映像の投影と、照明装置２０による照明光の照射とを並行して行うことができるシステムである。空間５０は、例えば、部屋などの閉空間である。 The lighting system 100 is a system capable of projecting an image by the projector 10 and irradiating the illumination light by the lighting device 20 in parallel in the space 50 in which the projector 10 and the lighting device 20 are installed. The space 50 is, for example, a closed space such as a room.
　プロジェクタ１０が投影する映像は、例えば、木の陰影を模したモノクローム映像（言い換えれば、木漏れ日のモノクローム映像）である。このような映像は、例えば、空間の演出に用いられる。 The image projected by the projector 10 is, for example, a monochrome image that imitates the shadow of a tree (in other words, a monochrome image of sunlight through the trees). Such an image is used, for example, to produce a space.
　一般的には、演出用の映像を投影する場合には、映像の見え方（視認性）を確保するために空間５０を比較的暗くする必要がある。つまり、照明装置２０が発する光の明るさを暗くする必要がある。発明者らの知見によれば、映像の投影面における照度は、例えば、５０ルクス未満とされる必要がある。 In general, when projecting an image for production, it is necessary to make the space 50 relatively dark in order to secure the appearance (visibility) of the image. That is, it is necessary to dim the brightness of the light emitted by the lighting device 20. According to the findings of the inventors, the illuminance on the projection surface of the image needs to be, for example, less than 50 lux.
　これに対し、発明者らは後述の照度に関する所定条件を見出した。照明システム１００においては、上記木の陰影を模したモノクローム映像のように、少なくとも一部の領域において被写体が陰影によって表現された映像が投影される場合には、この所定条件が満たされる限り、映像の投影面を照明装置２０が発する照明光によって明るくしても映像の視認性が確保される。例えば、映像の投影面における照度が５０ルクス以上となることが許容される。 On the other hand, the inventors have found a predetermined condition regarding the illuminance described later. In the lighting system 100, when an image in which the subject is represented by shading in at least a part of the area is projected, such as a monochrome image imitating the shadow of a tree, the image is as long as this predetermined condition is satisfied. Even if the projection surface of the above is brightened by the illumination light emitted by the illumination device 20, the visibility of the image is ensured. For example, it is permissible for the illuminance on the projection surface of the image to be 50 lux or more.
　つまり、照明システム１００は、映像の視認性と、映像が投影される空間における明るさの確保とを両立することができる。言い換えれば、空間５０が明るい状態のまま映像演出を行うことができる。照明システム１００によれば、演出用の映像の利用範囲をオフィスまたは病院などの明るさが必要な空間５０にも拡大することができる。また、照明システム１００は、映像の投影面に演色性の高い照明光を補助的に照射することで、演色性が向上された光の演出を容易に実現することもできる。 That is, the lighting system 100 can achieve both the visibility of the image and the securing of the brightness in the space where the image is projected. In other words, it is possible to produce an image while the space 50 is in a bright state. According to the lighting system 100, the range of use of the image for production can be expanded to a space 50 such as an office or a hospital where brightness is required. Further, the illumination system 100 can easily realize the production of light with improved color rendering by irradiating the projection surface of the image with illumination light having high color rendering.
　［照明システムの構成］
　以下、このような照明システム１００が有する各装置について説明する。まず、プロジェクタ１０について説明する。 [Lighting system configuration]
Hereinafter, each device included in such a lighting system 100 will be described. First, the projector 10 will be described.
　プロジェクタ１０は、空間５０の天井または壁などに設置される。プロジェクタ１０は、光源、及び、光源が発する光を変調する、透過型液晶パネル、マイクロミラーアレイ、または、反射型液晶パネルなどの映像素子を備え、空間５０内（壁面、床面、または、天井面など）に映像を投影する。プロジェクタ１０は、一般的な映像よりもコントラスト比が低い演出用の映像を投影する。このような演出用の映像は、例えば、木の陰影を模したモノクローム映像（言い換えれば、グレースケール映像）であるが、黒以外の単色の濃淡で表現される映像であってもよいし、カラー映像であってもよい。 The projector 10 is installed on the ceiling or wall of the space 50. The projector 10 includes a light source and an image element such as a transmissive liquid crystal panel, a micromirror array, or a reflective liquid crystal panel that modulates the light emitted by the light source, and is provided in the space 50 (wall surface, floor surface, or ceiling). Project the image on a surface, etc.). The projector 10 projects an image for production having a contrast ratio lower than that of a general image. The image for such a production is, for example, a monochrome image (in other words, a grayscale image) that imitates the shadow of a tree, but may be an image expressed in a monochromatic shade other than black, or a color. It may be a video.
　演出用の映像のコントラスト比は、例えば、１００：１以下である。なお、コントラスト比は、映像の最も暗い部分（黒）を１としたときに、最も明るい部分（白）の明るさがその何倍であるかを示す物理量である。コントラスト比が１００：１以下であるとは、映像の最も暗い部分を１としたときに最も明るいところが１００以下であることを意味する。つまり、コントラスト比が１００：１以下であるとは、コントラスト比が５０：１などであることを意味する。 The contrast ratio of the image for production is, for example, 100: 1 or less. The contrast ratio is a physical quantity indicating how many times the brightness of the brightest part (white) is, when the darkest part (black) of the image is 1. When the contrast ratio is 100: 1 or less, it means that the brightest part is 100 or less when the darkest part of the image is 1. That is, when the contrast ratio is 100: 1 or less, it means that the contrast ratio is 50: 1 or the like.
　プロジェクタ１０は、制御装置３０から送信される制御信号に基づいて制御されるが、ユーザが専用のリモートコントローラ等を操作することによっても制御可能である。具体的には、プロジェクタ１０に投影させる映像、映像のコントラスト、映像の明るさ、映像の形状（台形歪み）などが変更可能である。 The projector 10 is controlled based on the control signal transmitted from the control device 30, but it can also be controlled by the user operating a dedicated remote controller or the like. Specifically, the image projected on the projector 10, the contrast of the image, the brightness of the image, the shape of the image (trapezoidal distortion), and the like can be changed.
　次に、照明装置２０について説明する。照明装置２０は、プロジェクタが設置された空間５０に設置され、プロジェクタ１０が映像を投影する投影面（図１の床面）に光を照らす。照明装置２０は、投影面の映像が投影されている領域に重ねて照明光を照射する。照明装置２０は、例えば、空間５０の天井または壁に埋め込まれるダウンライトであるが、照明装置２０の具体的態様は特に限定されない。照明装置２０は、空間５０の天井に設置されるシーリングライトであってもよいし、空間５０の天井または壁に設置されるスポットライトであってもよい。 Next, the lighting device 20 will be described. The lighting device 20 is installed in the space 50 in which the projector is installed, and illuminates the projection surface (floor surface in FIG. 1) on which the projector 10 projects an image. The illuminating device 20 irradiates the illumination light on the area on which the image of the projection surface is projected. The lighting device 20 is, for example, a downlight embedded in the ceiling or wall of the space 50, but the specific embodiment of the lighting device 20 is not particularly limited. The lighting device 20 may be a ceiling light installed on the ceiling of the space 50, or may be a spotlight installed on the ceiling or the wall of the space 50.
　照明装置２０の平均演色評価数（Ｒａ）は、例えば、８０以上である。つまり、照明装置２０は、比較的高い演色性を有している。 The average color rendering index (Ra) of the lighting device 20 is, for example, 80 or more. That is, the lighting device 20 has a relatively high color rendering property.
　照明装置２０の発光状態は、制御装置３０から送信される制御信号に基づいて制御されるが、ユーザが専用のリモートコントローラ等を操作することによっても制御可能である。ここでの発光状態の制御には、例えば、点灯及び消灯の切り替え制御、調光制御（言い換えれば、調光率（０％～１００％）の制御）、調色制御、及び、配光制御などが含まれる。 The light emitting state of the lighting device 20 is controlled based on the control signal transmitted from the control device 30, but it can also be controlled by the user operating a dedicated remote controller or the like. The light emission state control here includes, for example, lighting / extinguishing switching control, dimming control (in other words, dimming rate (0% to 100%) control), toning control, and light distribution control. Is included.
　照明装置２０は、例えば、基板上に複数のＬＥＤ素子が実装された発光モジュールを備える。複数のＬＥＤ素子には、比較的低い色温度（例えば、電球色など）の白色光を発する第一ＬＥＤ素子と、比較的高い色温度（例えば、昼白色など）の白色光を発する第二ＬＥＤ素子とが含まれる。第一ＬＥＤ素子及び第二ＬＥＤ素子の発光輝度は、独立して制御される。これにより、照明装置２０の調光機能及び調色機能が実現される。 The lighting device 20 includes, for example, a light emitting module in which a plurality of LED elements are mounted on a substrate. The plurality of LED elements include a first LED element that emits white light having a relatively low color temperature (for example, light bulb color) and a second LED that emits white light having a relatively high color temperature (for example, neutral white). Elements and are included. The emission brightness of the first LED element and the second LED element is controlled independently. As a result, the dimming function and the toning function of the lighting device 20 are realized.
　なお、発光モジュールの具体的態様は、特に限定されず、発光モジュールは、基板上に複数のＬＥＤ素子が実装された発光モジュールであって、複数のＬＥＤ素子のそれぞれは、赤色ＬＥＤチップ、青色ＬＥＤチップ、及び、緑色ＬＥＤチップを含み、各ＬＥＤチップの輝度が独立して制御可能な発光モジュールであってもよい。また、発光モジュールは、ＬＥＤ素子を用いた発光モジュールに限定されず、半導体レーザ等の半導体発光素子、有機ＥＬ（Ｅｌｅｃｔｒｏ　Ｌｕｍｉｎｅｓｃｅｎｃｅ）または無機ＥＬ等の固体発光素子を用いた発光モジュールであってもよい。 The specific mode of the light emitting module is not particularly limited, and the light emitting module is a light emitting module in which a plurality of LED elements are mounted on a substrate, and each of the plurality of LED elements is a red LED chip or a blue LED. It may be a light emitting module including a chip and a green LED chip, and the brightness of each LED chip can be controlled independently. Further, the light emitting module is not limited to a light emitting module using an LED element, and may be a light emitting module using a semiconductor light emitting element such as a semiconductor laser, or a solid light emitting element such as an organic EL (Electro Luminescence) or an inorganic EL. ..
　なお、照明装置２０は、プロジェクタ１０とは異なり、映像を投影する機能を有していない。具体的には、照明装置２０は、プロジェクタ１０が備える、透過型液晶パネル、マイクロミラーアレイ、または、反射型液晶パネルなどの映像素子を備えていない。 Note that, unlike the projector 10, the lighting device 20 does not have a function of projecting an image. Specifically, the lighting device 20 does not include an image element such as a transmissive liquid crystal panel, a micromirror array, or a reflective liquid crystal panel included in the projector 10.
　次に、制御装置３０について説明する。制御装置３０は、プロジェクタ１０及び照明装置２０を制御する。制御装置３０は、プロジェクタ１０及び照明装置２０と別体の装置であるが、プロジェクタ１０及び照明装置２０の一方の装置と一体であって、当該一方の装置に内蔵されてもよい。制御装置３０は、通信部３１と、制御部３２と、記憶部３３と、操作受付部３４とを備える。 Next, the control device 30 will be described. The control device 30 controls the projector 10 and the lighting device 20. Although the control device 30 is a device separate from the projector 10 and the lighting device 20, it may be integrated with one device of the projector 10 and the lighting device 20 and incorporated in the one device. The control device 30 includes a communication unit 31, a control unit 32, a storage unit 33, and an operation reception unit 34.
　通信部３１は、制御装置３０がプロジェクタ１０、照明装置２０、及び照度センサ４０と局所通信ネットワークを介して通信を行うための通信回路である。通信部３１によって行われる通信は、有線通信であってもよいし無線通信であってもよい。通信部３１が行う通信の通信規格は特に限定されない。 The communication unit 31 is a communication circuit for the control device 30 to communicate with the projector 10, the lighting device 20, and the illuminance sensor 40 via the local communication network. The communication performed by the communication unit 31 may be wired communication or wireless communication. The communication standard for communication performed by the communication unit 31 is not particularly limited.
　制御部３２は、通信部３１に制御信号を送信させることによりプロジェクタ１０及び照明装置２０を制御する。制御部３２は、例えば、マイクロコンピュータによって実現されるが、プロセッサによって実現されてもよい。 The control unit 32 controls the projector 10 and the lighting device 20 by causing the communication unit 31 to transmit a control signal. The control unit 32 is realized by, for example, a microcomputer, but may be realized by a processor.
　記憶部３３は、制御部３２が実行するプログラムが記憶される記憶装置である。記憶部３３は、具体的には、半導体メモリなどによって実現される。 The storage unit 33 is a storage device that stores a program executed by the control unit 32. Specifically, the storage unit 33 is realized by a semiconductor memory or the like.
　操作受付部３４は、ユーザの操作を受け付けるユーザインターフェース装置である。操作受付部３４は、タッチパネルまたはハードウェアボタンなどによって実現される。なお、制御装置３０が操作受付部３４を備えることは必須ではなく、専用のアプリケーションプログラムがインストールされた携帯端末であって通信部３１と通信可能な携帯端末が操作受付部３４として使用されてもよい。携帯端末は、具体的には、スマートフォンまたはタブレット端末である。 The operation reception unit 34 is a user interface device that accepts user operations. The operation reception unit 34 is realized by a touch panel, a hardware button, or the like. It is not essential that the control device 30 includes the operation reception unit 34, and even if a mobile terminal on which a dedicated application program is installed and capable of communicating with the communication unit 31 is used as the operation reception unit 34. Good. Specifically, the mobile terminal is a smartphone or a tablet terminal.
　次に、照度センサ４０について説明する。照度センサ４０は、プロジェクタ１０によって映像が投影されている投影面（図１の例では床面）の照度をセンシングする。照度センサ４０は、例えば、照明装置２０と一体であって、照明装置２０に内蔵されるが、プロジェクタ１０と一体であって、プロジェクタ１０に内蔵されてもよい。また、照度センサ４０は、プロジェクタ１０及び照明装置２０のいずれの装置とも別体であって、プロジェクタ１０及び照明装置２０のいずれの装置とも異なる位置に設置されてもよく、例えば、投影面である床材または壁材に照度センサ４０が設置されていてもよい。 Next, the illuminance sensor 40 will be described. The illuminance sensor 40 senses the illuminance of the projection surface (floor surface in the example of FIG. 1) on which an image is projected by the projector 10. The illuminance sensor 40 is integrated with the lighting device 20 and is built in the lighting device 20, but may be integrated with the projector 10 and built in the projector 10. Further, the illuminance sensor 40 is separate from both the projector 10 and the lighting device 20, and may be installed at a position different from that of the projector 10 and the lighting device 20, for example, a projection surface. The illuminance sensor 40 may be installed on the floor material or the wall material.
　［発明者らが得た知見］
　発明者らは、木漏れ日の映像を投影面に投影しているときの環境照度と映像の視認性の主観評価についての実験を行った。図３は、このような主観評価に関する実験の概要を説明するための図である。図３の（ａ）は、実験が行われた環境を示し、図３の（ｂ）は、評価に用いられた映像を示す。 [Knowledge obtained by the inventors]
The inventors conducted an experiment on the subjective evaluation of the environmental illuminance and the visibility of the image when the image of sunlight through the trees was projected on the projection surface. FIG. 3 is a diagram for explaining an outline of an experiment relating to such subjective evaluation. FIG. 3 (a) shows the environment in which the experiment was performed, and FIG. 3 (b) shows the image used for the evaluation.
　図３の（ａ）に示されるように、主観評価に関する実験においては、天井に設置されたプロジェクタ１０から投影面（壁面）に映像（図３の（ｂ））を投影し、１５人の被験者のそれぞれに映像の視認性が許容できるか否かを主観評価させた。投影面には、映像だけでなく、机上に設置された照明装置２０から光が照射され、照明装置２０を制御することにより投影面における照度（つまり環境照度）を変化させて映像の視認性が許容できるか否かを被験者に主観評価させた。 As shown in FIG. 3A, in the experiment on subjective evaluation, an image (FIG. 3B) was projected from a projector 10 installed on the ceiling onto a projection surface (wall surface), and 15 subjects were selected. We asked each of them to subjectively evaluate whether or not the visibility of the image was acceptable. The projection surface is irradiated with light not only from the image but also from the lighting device 20 installed on the desk, and by controlling the lighting device 20, the illuminance on the projection surface (that is, the environmental illuminance) is changed to improve the visibility of the image. The subjects were asked to subjectively evaluate whether or not it was acceptable.
　具体的には、照明装置２０をオフ（つまり環境照度がゼロ）の状態から徐々に明るさを増加させたときに映像の視認性が許容できるか否かの主観評価と、照明装置２０が最大の明るさの状態から徐々に明るさを低下させたときの映像の視認性が許容できるかの主観評価とを１人の被験者に対して３回ずつ行わせた。 Specifically, the subjective evaluation of whether or not the visibility of the image is acceptable when the brightness is gradually increased from the state where the lighting device 20 is off (that is, the environmental illuminance is zero), and the lighting device 20 is the maximum. One subject was asked to perform a subjective evaluation of whether the visibility of the image when the brightness was gradually reduced from the state of the brightness of the above was acceptable three times.
　図４は、このような主観評価に関する実験の結果のグラフを示す図である。図４において、縦軸は被評価者の何％が映像の視認性を許容できると評価したかを示し、横軸は照明装置２０が発する光に起因する投影面の照度（つまり、環境照度）を示している。なお、投影面における映像の照度（つまり、照明装置２０がオフのときの投影面における映像の照度）は、１８３ルクスである。 FIG. 4 is a graph showing a graph of the results of an experiment relating to such subjective evaluation. In FIG. 4, the vertical axis indicates what percentage of the evaluated persons evaluated that the visibility of the image is acceptable, and the horizontal axis indicates the illuminance of the projection surface (that is, the environmental illuminance) caused by the light emitted by the illuminating device 20. Is shown. The illuminance of the image on the projection surface (that is, the illuminance of the image on the projection surface when the lighting device 20 is off) is 183 lux.
　図４に示されるように、環境照度が２０２ルクスのときには７５％の被験者が映像の視認性を許容することができ、環境照度が３６６ルクスのときには５０％の被験者が映像の視認性を許容することができる。環境照度が５５０ルクスのときには２５％の被験者が映像の視認性を許容することができる。 As shown in FIG. 4, 75% of the subjects allow visibility of the image when the environmental illuminance is 202 lux, and 50% of the subjects allow the visibility of the image when the environmental illuminance is 366 lux. be able to. When the environmental illuminance is 550 lux, 25% of the subjects can tolerate the visibility of the image.
　図５は、主観評価に関する実験の結果をまとめた表を示す図である。図５に示されるように、投影面において、映像の照度が照明光の照度の０．３（映像の明るさ１８３ルクス／環境照度５５０ルクス）倍以上であれば、２５％以上の被験者が映像の視認性を許容することができる。投影面において、映像の照度が照明光の照度の０．５（映像の明るさ１８３ルクス／環境照度３６６ルクス）倍以上であればより好ましく、５０％以上の被験者が映像の視認性を許容することができる。 FIG. 5 is a diagram showing a table summarizing the results of experiments on subjective evaluation. As shown in FIG. 5, if the illuminance of the image on the projection surface is 0.3 times or more the illuminance of the illumination light (image brightness 183 lux / environmental illuminance 550 lux), 25% or more of the subjects are images. Visibility can be tolerated. It is more preferable that the illuminance of the image on the projection surface is 0.5 times or more the illuminance of the illumination light (image brightness 183 lux / environmental illuminance 366 lux), and 50% or more of the subjects allow the image visibility. be able to.
　さらに、投影面において、映像の照度が照明光の照度の０．９（映像の明るさ１８３ルクス／環境照度２０２ルクス）倍以上であれば、７５％以上の被験者が映像の視認性を許容することができる。なお、照度は、言い換えれば、単位面積当たりの光束量である。 Further, if the illuminance of the image on the projection surface is 0.9 times or more the illuminance of the illumination light (image brightness 183 lux / environmental illuminance 202 lux), 75% or more of the subjects allow the image visibility. be able to. The illuminance is, in other words, the amount of luminous flux per unit area.
　なお、投影面において映像の照度が照明光の照度よりも十分に高いときには、映像の視認性は良好である。既存のプロジェクタ１０が投影できる映像の最大の照度を１００００ルクス程度であると考えると、投影面における映像の照度は照明光の照度の５５（映像の明るさ１００００ルクス／環境照度２０２ルクス）倍以下となる。なお、投影面における映像の照度が照明光の照度の１倍未満であれば映像の照度のほうが照明光の照度よりも低い構成となる。このような構成は一般的には採用されない。 Note that the visibility of the image is good when the illuminance of the image on the projection surface is sufficiently higher than the illuminance of the illumination light. Considering that the maximum illuminance of the image that can be projected by the existing projector 10 is about 10000 lux, the illuminance of the image on the projection surface is 55 times or less (brightness of the image 10000 lux / environmental illuminance 202 lux) of the illuminance of the illumination light. It becomes. If the illuminance of the image on the projection surface is less than 1 times the illuminance of the illumination light, the illuminance of the image is lower than the illuminance of the illumination light. Such a configuration is not generally adopted.
　このような結果が得られたことは、ユーザが日常的な自然現象の中での原体験に基づき認知的な補間を行うことができるため、従来一般の映像演出と比べ、その許容度が増した（言い換えると、一般的な映像演出では許容できない環境照度を許容できた）と考えられる。 The fact that such a result is obtained means that the user can perform cognitive interpolation based on the original experience in a daily natural phenomenon, so that the tolerance is increased as compared with the conventional general video production. (In other words, it was possible to tolerate the environmental illuminance that cannot be tolerated in general video production).
　また、今回投影面のコンテンツを木漏れ日としたが、水面、波紋などをはじめとした任意の自然現象に基づく陰影表現でも上記の効果は同様に得られるものであり、ユーザはプロジェクタ１０から投影されるコンテンツを自在に選択可能である。 In addition, although the content of the projection surface is sunbeams this time, the above effect can be obtained in the same way with shadow expression based on arbitrary natural phenomena such as water surface and ripples, and the user is projected from the projector 10. The content can be freely selected.
　あわせて、時間によって上記コンテンツを変えたり、再生速度を変化させたり、色合いを変えたり、明るさを変えたりするなどの制御がおこなわれてもよい。これらは、ユーザの操作で行われても、自動で行われてもよい。このとき、空間の意匠性や快適性が高まるため、好ましい。 At the same time, control such as changing the above content, changing the playback speed, changing the hue, and changing the brightness may be performed depending on the time. These may be performed by the user's operation or may be performed automatically. At this time, it is preferable because the design and comfort of the space are enhanced.
　以上のような発明者らの実験に基づき、照明システム１００においては、投影面において、映像の照度は、照明光の照度の０．３倍以上５５倍以下（以下、この照度に関する条件は所定条件とも記載される）となるように、照明システム１００の設置時（施工時）に映像の照度、及び、照明光の設定が行われる。これにより、照明システム１００は、空間５０における映像の視認性を確保しながら空間５０を照明することができる。 Based on the above experiments by the inventors, in the lighting system 100, the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less the illuminance of the illumination light (hereinafter, the conditions relating to this illuminance are predetermined conditions. The illuminance of the image and the illumination light are set at the time of installation (at the time of construction) of the lighting system 100 so as to be described as). As a result, the lighting system 100 can illuminate the space 50 while ensuring the visibility of the image in the space 50.
　また、照明システム１００においては、投影面における照明光の照度が、一般的には映像が見にくくなるとされる５０ルクス以上であっても、映像の照度が照明光の照度の０．３倍以上５５倍以下となるようにプロジェクタ１０及び照明装置２０を制御することで映像の視認性を確保することができる。 Further, in the lighting system 100, even if the illuminance of the illumination light on the projection surface is 50 lux or more, which is generally considered to be difficult to see the image, the illuminance of the image is 0.3 times or more the illuminance of the illumination light 55. The visibility of the image can be ensured by controlling the projector 10 and the lighting device 20 so as to be twice or less.
　［動作例１］
　照明システム１００は、例えば、プロジェクタ１０によって投影される映像の明るさと照明装置２０が発する照明光の明るさとをユーザが制限なく自由に変更できる通常モードの動作と、演出モードの動作とを選択的に実行する。演出モードの動作においては、投影面において、映像の照度が照明光の照度の０．３倍以上５５倍以下となるような設定でプロジェクタ１０及び照明装置２０が制御される。以下、ユーザがこのような設定を事前に行い設定情報として記憶（登録）するための動作について説明する。図６は、照明システム１００の動作例１のフローチャートである。 [Operation example 1]
The lighting system 100 selectively selects, for example, a normal mode operation in which the user can freely change the brightness of the image projected by the projector 10 and the brightness of the illumination light emitted by the lighting device 20 and an operation in the effect mode. To run. In the operation of the effect mode, the projector 10 and the lighting device 20 are controlled so that the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less the illuminance of the illumination light. Hereinafter, an operation for the user to perform such a setting in advance and store (register) it as setting information will be described. FIG. 6 is a flowchart of operation example 1 of the lighting system 100.
　まず、制御装置３０の操作受付部３４は、照明装置２０によって投影面に照明光を投影するための操作をユーザから受け付ける（Ｓ１１）。制御部３２は、操作受付部３４が受け付けた操作に基づいて、照明装置２０（より詳細には２つの照明装置のそれぞれ）に照明光を照射させる（Ｓ１２）。制御部３２は、具体的には、通信部３１に照明装置２０へ制御信号を送信させることにより、照明装置２０に照明光を照射させる。この結果、投影面にはユーザの所望の照度の照明光が照射される。 First, the operation reception unit 34 of the control device 30 receives from the user an operation for projecting the illumination light onto the projection surface by the illumination device 20 (S11). The control unit 32 irradiates the lighting device 20 (more specifically, each of the two lighting devices) with the illumination light based on the operation received by the operation reception unit 34 (S12). Specifically, the control unit 32 causes the communication unit 31 to transmit a control signal to the lighting device 20 to irradiate the lighting device 20 with illumination light. As a result, the projection surface is irradiated with illumination light having a desired illuminance of the user.
　照度センサ４０は、投影面に照射されている照明光の照度をセンシングし（Ｓ１３）、センシングの結果として投影面に照射されている照明光の照度を示す第一照度情報を制御装置３０の通信部３１に送信する。制御部３２は、通信部３１によって受信された第一照度情報を記憶部３３に記憶し（Ｓ１４）、受信された第一照度情報に基づいてプロジェクタ１０によって投影される映像の投影面における照度の許容範囲を算出する（Ｓ１５）。上述のように映像の照度の許容範囲は、第一照度情報が示す照度の０．３倍以上５５倍以下である。 The illuminance sensor 40 senses the illuminance of the illumination light irradiating the projection surface (S13), and communicates the first illuminance information indicating the illuminance of the illumination light irradiating the projection surface as a result of the sensing with the control device 30. It is transmitted to the unit 31. The control unit 32 stores the first illuminance information received by the communication unit 31 in the storage unit 33 (S14), and the illuminance on the projection surface of the image projected by the projector 10 based on the received first illuminance information. The permissible range is calculated (S15). As described above, the permissible range of illuminance of the image is 0.3 times or more and 55 times or less of the illuminance indicated by the first illuminance information.
　この実施例において、照明システム１００は照明器具や空間のレイアウト変更、時刻や天候変動にともなう空間の環境照度変化に対して、つねに映像の照度を第一照度情報が示す照度の０．３倍以上５５倍以下に保ち続けるので、好ましい。 In this embodiment, the lighting system 100 always makes the illuminance of the image 0.3 times or more the illuminance indicated by the first illuminance information against the change of the layout of the lighting equipment and the space and the change of the environmental illuminance of the space due to the time and the weather change. It is preferable because it keeps 55 times or less.
　次に、操作受付部３４は、プロジェクタ１０によって投影面に映像を投影するための操作をユーザから受け付ける（Ｓ１６）。制御部３２は、操作受付部３４が受け付けた操作に基づいて、プロジェクタ１０に映像を投影させる（Ｓ１７）。制御部３２は、具体的には、通信部３１にプロジェクタ１０へ制御信号を送信させることにより、プロジェクタ１０に映像を投影させる。この結果、投影面にはユーザの所望の照度の映像が投影される。 Next, the operation reception unit 34 receives from the user an operation for projecting an image on the projection surface by the projector 10 (S16). The control unit 32 projects an image on the projector 10 based on the operation received by the operation reception unit 34 (S17). Specifically, the control unit 32 causes the communication unit 31 to transmit a control signal to the projector 10 to project an image on the projector 10. As a result, an image of the user's desired illuminance is projected on the projection surface.
　照度センサ４０は、投影面の照度（つまり、映像の照度と照明光の照度とを合わせた照度）をセンシングし（Ｓ１８）、センシングの結果として投影面の照度を示す第二照度情報を制御装置３０の通信部３１に送信する。制御部３２は、通信部３１によって受信された第二照度情報を記憶部３３に記憶する（Ｓ１９）。 The illuminance sensor 40 senses the illuminance of the projection surface (that is, the illuminance obtained by combining the illuminance of the image and the illuminance of the illumination light) (S18), and controls the second illuminance information indicating the illuminance of the projection surface as a result of the sensing. It is transmitted to the communication unit 31 of 30. The control unit 32 stores the second illuminance information received by the communication unit 31 in the storage unit 33 (S19).
　その後、操作受付部３４によってユーザの設定完了操作が受け付けられると（Ｓ２０）、制御部３２は、ステップＳ１９において記憶部３３に記憶された第二照度情報が示す照度からステップＳ１４において記憶部３３に記憶された第一照度情報が示す照度を減算することにより投影面における映像の照度を算出する（Ｓ２１）。そして制御部３２は、投影面における映像の照度がステップＳ１５によって算出された許容範囲内であるか否かを判定する（Ｓ２２）。 After that, when the operation reception unit 34 accepts the user's setting completion operation (S20), the control unit 32 shifts from the illuminance indicated by the second illuminance information stored in the storage unit 33 in step S19 to the storage unit 33 in step S14. The illuminance of the image on the projection surface is calculated by subtracting the illuminance indicated by the stored first illuminance information (S21). Then, the control unit 32 determines whether or not the illuminance of the image on the projection surface is within the permissible range calculated in step S15 (S22).
　制御部３２は、投影面における映像の照度がステップＳ１５によって算出された許容範囲内であると判定すると（Ｓ２２でＹｅｓ）、プロジェクタ１０及び照明装置２０の現在の設定を示す設定情報を記憶部３３に記憶する（Ｓ２３）。つまり、記憶部３３には、投影面において映像の照度が照明光の照度の０．３倍以上５５倍以下となるときのプロジェクタ１０及び照明装置２０の設定情報が記憶される。以降、操作受付部３４が演出モードを指示するユーザの操作を受け付けたときには、制御部３２は、記憶部３３に記憶された設定情報に基づいてプロジェクタ１０及び照明装置２０を制御する。 When the control unit 32 determines that the illuminance of the image on the projection surface is within the allowable range calculated in step S15 (Yes in S22), the control unit 32 stores the setting information indicating the current settings of the projector 10 and the lighting device 20. It is stored in (S23). That is, the storage unit 33 stores the setting information of the projector 10 and the lighting device 20 when the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less the illuminance of the illumination light. After that, when the operation reception unit 34 receives the user's operation instructing the effect mode, the control unit 32 controls the projector 10 and the lighting device 20 based on the setting information stored in the storage unit 33.
　一方、制御部３２は、投影面における映像の照度がステップＳ１５によって算出された許容範囲外であると判定すると（Ｓ２２でＮｏ）、設定情報を記憶部３３に記憶しない。この場合は、設定が許容範囲外であることのユーザへの通知、及び、ユーザによる設定のやり直しなどが行われる。 On the other hand, if the control unit 32 determines that the illuminance of the image on the projection surface is out of the permissible range calculated in step S15 (No in S22), the control unit 32 does not store the setting information in the storage unit 33. In this case, the user is notified that the setting is out of the permissible range, and the user redoes the setting.
　このような動作例１によれば、照明システム１００は、投影面において映像の照度が照明光の照度の０．３倍以上５５倍以下となるような設定情報のみを選択的に記憶部３３に記憶することができる。 According to such an operation example 1, the lighting system 100 selectively stores only the setting information such that the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less of the illuminance of the illumination light in the storage unit 33. Can be remembered.
　なお、動作例１では、照明光の照度が決定された後に映像の照度が許容範囲内であるか否かが判定されたが、映像の照度が決定された後に照明光の照度が許容範囲内であるか否かが判定されてもよい。 In operation example 1, it was determined whether or not the illuminance of the image was within the permissible range after the illuminance of the illumination light was determined, but the illuminance of the illumination light was within the permissible range after the illuminance of the image was determined. It may be determined whether or not.
　なお、動作例１では、投影面の照度が照度センサ４０によって計測されたが、照度センサ４０が投影面の照度を計測することは必須ではない。例えば、ユーザは、プロジェクタ１０及び照明装置２０のうち照明装置２０のみが発光している状態での投影面の照度を、照度計でマニュアル測定してもよい。この場合、ユーザは、マニュアル測定した照度の入力操作を操作受付部３４に対して行うことにより、第一照度情報を記憶部３３に記憶することができる。制御部３２は、記憶された第一照度情報に基づいてプロジェクタ１０によって投影される映像の投影面における照度の許容範囲を算出する。上述のように映像の照度の許容範囲は、第一照度情報が示す照度の０．３倍以上５５倍以下である。 In operation example 1, the illuminance of the projection surface was measured by the illuminance sensor 40, but it is not essential that the illuminance sensor 40 measures the illuminance of the projection surface. For example, the user may manually measure the illuminance of the projection surface in a state where only the lighting device 20 of the projector 10 and the lighting device 20 is emitting light with an illuminometer. In this case, the user can store the first illuminance information in the storage unit 33 by performing the manually measured illuminance input operation on the operation reception unit 34. The control unit 32 calculates an allowable range of illuminance on the projection surface of the image projected by the projector 10 based on the stored first illuminance information. As described above, the permissible range of illuminance of the image is 0.3 times or more and 55 times or less of the illuminance indicated by the first illuminance information.
　この実施例において、プロジェクタなどの映像機器に不慣れなユーザ、例えば照明装置の施工を専門とする工事業者などにとって、プロジェクタ１０の出力条件を別途設定することなく、簡単にシステムの初期設定が行えるようになるため、好ましい。 In this embodiment, a user who is unfamiliar with video equipment such as a projector, for example, a contractor who specializes in the construction of a lighting device, can easily perform initial setting of the system without separately setting the output conditions of the projector 10. Therefore, it is preferable.
　［動作例２］
　上記演出モードの動作中（つまり、投影面における映像の照度が照明光の照度の０．３倍以上５５倍以下であるという所定条件が満たされているとき）にプロジェクタ１０の設定変更が行われる場合がある。以下このようなときの照明システム１００の動作について説明する。図７は、照明システム１００の動作例２のフローチャートである。 [Operation example 2]
The setting of the projector 10 is changed during the operation of the above-mentioned effect mode (that is, when the predetermined condition that the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less of the illuminance of the illumination light is satisfied). In some cases. The operation of the lighting system 100 in such a case will be described below. FIG. 7 is a flowchart of operation example 2 of the lighting system 100.
　照明システム１００は、演出モードの動作を行う（Ｓ３１）。このとき、投影面における映像の照度が照明光の照度の０．３倍以上５５倍以下であるという所定条件は満たされている。 The lighting system 100 operates in the effect mode (S31). At this time, the predetermined condition that the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less the illuminance of the illumination light is satisfied.
　次に、操作受付部３４は、プロジェクタ１０が投影する映像の照度を変更するための操作をユーザから受け付ける（Ｓ３２）。制御部３２は、この操作に基づいてプロジェクタ１０が投影する映像の照度を変更した場合に所定条件が満たされるか否かを判定する（Ｓ３３）。例えば、上記動作例１で説明したように、照度センサ４０によって送信される照度情報に基づいて演出モードの動作中の映像の照度、及び、照明光の照度が記憶部３３に記憶されていれば、制御部３２は、変更後の映像の照度を推定し、かつ、推定した変更後の映像の照度が所定の条件を満たすか否かを判定することができる。 Next, the operation reception unit 34 receives an operation from the user for changing the illuminance of the image projected by the projector 10 (S32). The control unit 32 determines whether or not the predetermined condition is satisfied when the illuminance of the image projected by the projector 10 is changed based on this operation (S33). For example, as described in the above operation example 1, if the illuminance of the image during the operation of the effect mode and the illuminance of the illumination light are stored in the storage unit 33 based on the illuminance information transmitted by the illuminance sensor 40. , The control unit 32 can estimate the illuminance of the changed image and determine whether or not the estimated illuminance of the changed image satisfies a predetermined condition.
　制御部３２は、プロジェクタ１０が投影する映像の照度を上記操作に基づいて変更した場合に所定の条件が満たされると判定すると（Ｓ３３でＹｅｓ）、プロジェクタ１０が投影する映像の照度を変更する（Ｓ３４）。つまり、制御部３２は、ユーザの指示にしたがってプロジェクタ１０を制御する。このとき、照明装置２０については、特に制御は行われない。 When the control unit 32 determines that the predetermined condition is satisfied when the illuminance of the image projected by the projector 10 is changed based on the above operation (Yes in S33), the control unit 32 changes the illuminance of the image projected by the projector 10 (Yes). S34). That is, the control unit 32 controls the projector 10 according to the user's instruction. At this time, the lighting device 20 is not particularly controlled.
　一方、制御部３２は、プロジェクタ１０が投影する映像の照度を上記操作に基づいて変更した場合に所定の条件が満たされなくなると判定すると（Ｓ３３でＮｏ）、上記操作に基づいて、プロジェクタ１０が投影する映像の照度を変更し（Ｓ３５）、さらに、照明装置２０が照射する照明光の照度を、所定条件が満たされるように変更する（Ｓ３６）。つまり、制御部３２は、ユーザの指示にしたがってプロジェクタ１０を制御し、かつ、照明装置２０を所定条件が満たされるように制御する。 On the other hand, when the control unit 32 determines that the predetermined condition is not satisfied when the illuminance of the image projected by the projector 10 is changed based on the above operation (No in S33), the projector 10 decides based on the above operation. The illuminance of the projected image is changed (S35), and the illuminance of the illumination light emitted by the lighting device 20 is changed so that a predetermined condition is satisfied (S36). That is, the control unit 32 controls the projector 10 according to the user's instruction, and controls the lighting device 20 so that a predetermined condition is satisfied.
　以上説明したように、照明システム１００は、プロジェクタ１０をユーザの指示にしたがって制御することにより所定条件が満たされなくなる場合に、プロジェクタ１０をユーザの指示にしたがって制御しつつ、照明装置２０が照射する照明光の照度を変更することにより、所定条件を満たすことができる。つまり、照明システム１００は、プロジェクタ１０及び照明装置２０を連動制御することで、映像の視認性が確保される。 As described above, in the lighting system 100, when the predetermined condition is not satisfied by controlling the projector 10 according to the user's instruction, the lighting device 20 irradiates the projector 10 while controlling the projector 10 according to the user's instruction. By changing the illuminance of the illumination light, a predetermined condition can be satisfied. That is, the lighting system 100 ensures the visibility of the image by interlockingly controlling the projector 10 and the lighting device 20.
　なお、動作例２では、プロジェクタ１０によって投影される映像の照度の変更が指示される場合について説明されたが、照明装置２０によって照射される照明光の照度が変更される場合も同様である。つまり、制御部３２は、プロジェクタ１０及び照明装置２０の一方の装置をユーザの指示にしたがって制御することにより所定条件が満たされなくなる場合に、当該一方の装置をユーザの指示にしたがって制御し、かつ、プロジェクタ１０及び照明装置２０の他方の装置を所定条件が満たされるように制御すればよい。 In the operation example 2, the case where the change in the illuminance of the image projected by the projector 10 is instructed has been described, but the same applies to the case where the illuminance of the illumination light emitted by the lighting device 20 is changed. That is, when the predetermined condition is not satisfied by controlling one of the projector 10 and the lighting device 20 according to the user's instruction, the control unit 32 controls the one device according to the user's instruction, and , The other device of the projector 10 and the lighting device 20 may be controlled so as to satisfy a predetermined condition.
　また、動作例２のような連動制御が行われることは必須ではなく、照明システム１００は、演出モードの動作中には、所定条件が満たされなくなるようなユーザの操作を無効にしてもよい。 Further, it is not essential that the interlocking control as in the operation example 2 is performed, and the lighting system 100 may invalidate the user's operation such that the predetermined condition is not satisfied during the operation of the effect mode.
　［効果等］
　以上説明したように、照明システム１００は、少なくとも一部の領域において被写体が陰影によって表現された映像を投影面に投影するプロジェクタ１０と、投影面に照明光を照射する照明装置２０とを備え、投影面において、映像の照度は、照明光の照度の０．３倍以上５５倍以下である。 [Effects, etc.]
As described above, the lighting system 100 includes a projector 10 that projects an image in which a subject is represented by shadows on a projection surface in at least a part of the area, and an illumination device 20 that irradiates the projection surface with illumination light. On the projection surface, the illuminance of the image is 0.3 times or more and 55 times or less the illuminance of the illumination light.
　このような照明システム１００は、投影面を照明光によって明るくしても映像の視認性を確保することができる。したがって、照明システム１００は、映像の視認性と、映像が投影される空間における明るさの確保とを両立することができる。 In such an illumination system 100, the visibility of an image can be ensured even if the projection surface is brightened by the illumination light. Therefore, the lighting system 100 can achieve both the visibility of the image and the securing of the brightness in the space where the image is projected.
　また、例えば、照明光の投影面における照度は、５０ルクス以上である。 Also, for example, the illuminance on the projection surface of the illumination light is 50 lux or more.
　このような照明システム１００は、投影面における照明光の照度が、一般的には映像が見にくくなるとされる５０ルクス以上であっても、視映像の視認性を確保することができる。 Such an illumination system 100 can ensure the visibility of a visual image even if the illuminance of the illumination light on the projection surface is 50 lux or more, which is generally considered to be difficult to see.
　また、例えば、照明システム１００は、さらに、プロジェクタ１０及び照明装置２０を制御する制御装置３０を備える。制御装置３０は、投影面において映像の照度が照明光の照度の０．３倍以上５５倍以下となるときのプロジェクタ１０及び照明装置２０の設定情報が記憶される記憶部３３と、設定情報に基づいてプロジェクタ１０及び照明装置２０を制御する制御部３２とを備える。 Further, for example, the lighting system 100 further includes a control device 30 that controls the projector 10 and the lighting device 20. The control device 30 has a storage unit 33 that stores setting information of the projector 10 and the lighting device 20 when the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less of the illuminance of the illumination light, and the setting information. A control unit 32 that controls the projector 10 and the lighting device 20 based on the projector 10 is provided.
　このような照明システム１００は、設定情報に基づいてプロジェクタ１０及び照明装置２０を制御することができる。 Such a lighting system 100 can control the projector 10 and the lighting device 20 based on the setting information.
　また、例えば、制御部３２は、プロジェクタ１０及び照明装置２０の一方の装置をユーザの指示にしたがって制御することにより投影面における映像の照度が照明光の照度の０．３倍以上５５倍以下であるという条件が満たされなくなる場合に、一方の装置をユーザの指示にしたがって制御し、かつ、プロジェクタ１０及び照明装置２０の他方の装置を条件が満たされるように制御する。 Further, for example, the control unit 32 controls one of the projector 10 and the lighting device 20 according to the user's instruction so that the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less of the illuminance of the illumination light. When the condition is not satisfied, one device is controlled according to a user's instruction, and the other device of the projector 10 and the lighting device 20 is controlled so that the condition is satisfied.
　このような照明システム１００は、プロジェクタ１０及び照明装置２０を連動制御することで、ユーザによって設定変更が指示された場合も、映像の視認性を確保することができる。 By interlocking control of the projector 10 and the lighting device 20 in such a lighting system 100, it is possible to ensure the visibility of the image even when the user instructs the setting change.
　また、例えば、映像のコントラスト比は、１００：１以下である。 Also, for example, the contrast ratio of the image is 100: 1 or less.
　このような照明システム１００は、コントラスト比が１００：１以下の映像を投影することができる。 Such a lighting system 100 can project an image having a contrast ratio of 100: 1 or less.
　また、例えば、照明装置２０の平均演色評価数は、８０以上である。 Further, for example, the average color rendering index of the lighting device 20 is 80 or more.
　このような照明システム１００は、演色性の高い照明光を照射することができる。映像の投影面にこのような演色性の高い照明光が補助的に照射されることで、演色性が向上された光の演出が実現される。 Such an illumination system 100 can irradiate illumination light with high color rendering properties. By supplementarily irradiating the projection surface of the image with such highly color-rendering illumination light, it is possible to produce light with improved color rendering.
　また、例えば、映像は、モノクローム映像である。 Also, for example, the video is a monochrome video.
　このような照明システム１００は、モノクローム映像を投影することができる。 Such a lighting system 100 can project a monochrome image.
　（その他の実施の形態）
　以上、実施の形態について説明したが、本発明は、上記実施の形態に限定されるものではない。 (Other embodiments)
Although the embodiments have been described above, the present invention is not limited to the above embodiments.
　例えば、上記実施の形態では、照明システムは演出に用いられると説明されたが、演出以外の用途で使用されてもよい。 For example, in the above embodiment, it was explained that the lighting system is used for the production, but it may be used for purposes other than the production.
　また、上記実施の形態では、照明システムは、複数の装置によって実現されたが、単一の装置として実現されてもよい。照明システムが複数の装置によって実現される場合、上記実施の形態で説明された照明システムが備える構成要素は、複数の装置にどのように振り分けられてもよい。 Further, in the above embodiment, the lighting system is realized by a plurality of devices, but it may be realized as a single device. When the lighting system is realized by a plurality of devices, the components included in the lighting system described in the above embodiment may be distributed to the plurality of devices in any way.
　また、上記実施の形態において、特定の処理部が実行する処理を別の処理部が実行してもよい。また、複数の処理の順序が変更されてもよいし、複数の処理が並行して実行されてもよい。 Further, in the above embodiment, another processing unit may execute the processing executed by the specific processing unit. Further, the order of the plurality of processes may be changed, or the plurality of processes may be executed in parallel.
　また、上記実施の形態において、各構成要素は、各構成要素に適したソフトウェアプログラムを実行することによって実現されてもよい。各構成要素は、ＣＰＵまたはプロセッサなどのプログラム実行部が、ハードディスクまたは半導体メモリなどの記録媒体に記録されたソフトウェアプログラムを読み出して実行することによって実現されてもよい。 Further, in the above embodiment, each component may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.
　また、各構成要素は、ハードウェアによって実現されてもよい。各構成要素は、回路（または集積回路）でもよい。これらの回路は、全体として１つの回路を構成してもよいし、それぞれ別々の回路でもよい。また、これらの回路は、それぞれ、汎用的な回路でもよいし、専用の回路でもよい。 In addition, each component may be realized by hardware. Each component may be a circuit (or integrated circuit). These circuits may form one circuit as a whole, or may be separate circuits from each other. Further, each of these circuits may be a general-purpose circuit or a dedicated circuit.
　また、本発明の全般的または具体的な態様は、システム、装置、方法、集積回路、コンピュータプログラムまたはコンピュータ読み取り可能なＣＤ－ＲＯＭなどの記録媒体で実現されてもよい。また、システム、装置、方法、集積回路、コンピュータプログラム及び記録媒体の任意な組み合わせで実現されてもよい。 Further, general or specific aspects of the present invention may be realized by a recording medium such as a system, an apparatus, a method, an integrated circuit, a computer program, or a computer-readable CD-ROM. Further, it may be realized by any combination of a system, an apparatus, a method, an integrated circuit, a computer program and a recording medium.
　例えば、本発明は、上記実施の形態の制御装置として実現されてもよいし、制御装置などのコンピュータによって実行される照明装置の制御方法として実現されてもよい。本発明は、照明装置の制御方法をコンピュータに実行させるためのプログラムとして実現されてもよいし、このようなプログラムが記録されたコンピュータ読み取り可能な非一時的な記録媒体として実現されてもよい。 For example, the present invention may be realized as a control device of the above embodiment, or may be realized as a control method of a lighting device executed by a computer such as a control device. The present invention may be realized as a program for causing a computer to execute a control method of a lighting device, or may be realized as a computer-readable non-temporary recording medium in which such a program is recorded.
　その他、各実施の形態に対して当業者が思いつく各種変形を施して得られる形態、または、本発明の趣旨を逸脱しない範囲で各実施の形態における構成要素及び機能を任意に組み合わせることで実現される形態も本発明に含まれる。 In addition, it is realized by applying various modifications to each embodiment that can be conceived by those skilled in the art, or by arbitrarily combining the components and functions of each embodiment within the range not deviating from the gist of the present invention. The form is also included in the present invention.
　１０　プロジェクタ
　２０　照明装置
　３０　制御装置
　３２　制御部
　３３　記憶部
　４０　照度センサ
　５０　空間
　１００　照明システム 10 Projector 20 Lighting device 30 Control device 32 Control unit 33 Storage unit 40 Illuminance sensor 50 Space 100 Lighting system

Claims (7)

  1. 　少なくとも一部の領域において被写体が陰影によって表現された映像を投影面に投影するプロジェクタと、
    　前記投影面に照明光を照射する照明装置とを備え、
    　前記投影面において、前記映像の照度は、前記照明光の照度の０．３倍以上５５倍以下である
    　照明システム。     A projector that projects an image in which the subject is shaded in at least a part of the area onto the projection surface.
    A lighting device for irradiating the projection surface with illumination light is provided.
    An illumination system in which the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less the illuminance of the illumination light.
  2. 　前記照明光の前記投影面における照度は、５０ルクス以上である
    　請求項１に記載の照明システム。     The lighting system according to claim 1, wherein the illuminance of the illumination light on the projection surface is 50 lux or more.
  3. 　さらに、前記プロジェクタ及び前記照明装置を制御する制御装置を備え、
    　前記制御装置は、
    　前記投影面において前記映像の照度が前記照明光の照度の０．３倍以上５５倍以下となるときの前記プロジェクタ及び前記照明装置の設定情報が記憶される記憶部と、
    　前記設定情報に基づいて前記プロジェクタ及び前記照明装置を制御する制御部とを備える
    　請求項１または２に記載の照明システム。     Further, a control device for controlling the projector and the lighting device is provided.
    The control device is
    A storage unit that stores setting information of the projector and the lighting device when the illuminance of the image on the projection surface is 0.3 times or more and 55 times or less the illuminance of the illumination light.
    The lighting system according to claim 1 or 2, further comprising a control unit that controls the projector and the lighting device based on the setting information.
  4. 　前記制御部は、前記プロジェクタ及び前記照明装置の一方の装置をユーザの指示にしたがって制御することにより前記投影面における前記映像の照度が前記照明光の照度の０．３倍以上５５倍以下であるという条件が満たされなくなる場合に、前記一方の装置を前記ユーザの指示にしたがって制御し、かつ、前記プロジェクタ及び前記照明装置の他方の装置を前記条件が満たされるように制御する
    　請求項３に記載の照明システム。     By controlling one of the projector and the lighting device according to a user's instruction, the control unit has an illuminance of the image on the projection surface of 0.3 times or more and 55 times or less of the illuminance of the illumination light. 3. The third aspect of the present invention is to control the one device according to the user's instruction and control the projector and the other device of the lighting device so that the condition is satisfied when the condition is not satisfied. Lighting system.
  5. 　前記映像のコントラスト比は、１００：１以下である
    　請求項１～４のいずれか１項に記載の照明システム。     The lighting system according to any one of claims 1 to 4, wherein the contrast ratio of the image is 100: 1 or less.
  6. 　前記照明装置の平均演色評価数は、８０以上である
    　請求項１～５のいずれか１項に記載の照明システム。     The lighting system according to any one of claims 1 to 5, wherein the average color rendering index of the lighting device is 80 or more.
  7. 　前記映像は、モノクローム映像である
    　請求項１～６のいずれか１項に記載の照明システム。     The lighting system according to any one of claims 1 to 6, wherein the image is a monochrome image.
PCT/JP2020/026606 2019-07-30 2020-07-07 Illumination system WO2021020050A1 (en)

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Citations (3)

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JP2008225294A (en) * 2007-03-15 2008-09-25 Takayuki Ohira Composite planetarium system
WO2018158885A1 (en) * 2017-03-01 2018-09-07 マクセル株式会社 Illumination apparatus
JP2019009062A (en) * 2017-06-28 2019-01-17 国立大学法人大阪大学 Lighting device

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US6857752B2 (en) * 2003-04-11 2005-02-22 3M Innovative Properties Company Projection illumination system with tunnel integrator and field lens
JP6291728B2 (en) * 2013-06-10 2018-03-14 セイコーエプソン株式会社 Light source device, projector, and projection system
JP6701751B2 (en) * 2016-01-20 2020-05-27 セイコーエプソン株式会社 Light source device and projector
JP2020013037A (en) * 2018-07-19 2020-01-23 Ｇａｔｅｂｏｘ株式会社 Projection device

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Publication number Priority date Publication date Assignee Title
JP2008225294A (en) * 2007-03-15 2008-09-25 Takayuki Ohira Composite planetarium system
WO2018158885A1 (en) * 2017-03-01 2018-09-07 マクセル株式会社 Illumination apparatus
JP2019009062A (en) * 2017-06-28 2019-01-17 国立大学法人大阪大学 Lighting device

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