Tree gap mottle sunlight simulation control device

Abstract

The tree gap mottle sunlight simulation control device (100) is provided with a plurality of light sources (1), a single lens (2) and a tree gap mottle sunlight source control module (3) for controlling the positions of the plurality of light sources (1). When the focal length of the lens (2) is F and the distance from the central axis (Z1) of the lens (2) to each of the plurality of light sources (1) is A, the tree gap mottle sunlight source control module (3) controls the positions of the plurality of light sources (1) such that F < A is satisfied.

Description

Technical Field

[0001] The present disclosure relates to a tree gap dappled sunlight simulation control device. Background Art

[0002] Generally, a lighting device that can create a lighting effect such as dappled sunlight between trees by using a plurality of lenses has been proposed (see, for example, Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Utility Model Registration No. 3149789 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] In the conventional technology, it is necessary to use a plurality of lenses, and therefore there is a problem in that the device becomes larger.

[0008] An object of the present disclosure is to provide a tree-dappled sunlight simulation control device capable of simulating light such as tree-dappled sunlight with a simple structure.

[0009] Means used to solve problems

[0010] A tree-gap dappled daylight simulation control device of one embodiment of the present invention comprises: a single lens; a plurality of light sources, which are arranged parallel to a central axis of the lens that is perpendicular to the optical axis; and a tree-gap dappled daylight light source control module, which controls the positions of the plurality of light sources. When the focal length of the lens is F and the distance from the central axis to each of the plurality of light sources is A, the tree-gap dappled daylight light source control module controls the positions of the plurality of light sources so as to satisfy F<A.

[0011] Effects of the Invention

[0012] According to the present disclosure, it is possible to provide a tree-dappled sunlight simulation control device capable of simulating light such as tree-dappled sunlight with a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a diagram schematically showing the tree-gap dappled sunlight simulation control device according to Embodiment 1 of the present disclosure.

[0014] Figure 2 This is a diagram showing an example of the relationship among a plurality of light sources, lenses, and projection surfaces.

[0015] Figure 31 is a diagram schematically showing a light emission pattern formed at a position at a distance X from the central axis of the lens and a light emission pattern formed at a position at a distance B from the central axis of the lens.

[0016] Figure 4 This is a block diagram schematically showing the structure of a tree-gap dappled sunlight simulation control device according to Embodiment 2 of the present disclosure.

[0017] Figure 5 This is a diagram showing an example of a change in the order of light emission and lighting or a change in the movement of lighting in a plurality of light sources.

[0018] Figure 6 This is a diagram showing an example of the frequency of occurrence of lighting of a plurality of light sources arranged along the X-axis direction.

[0019] Figure 7 This is a diagram showing an example of changes in the number of light emissions or changes in light emission widths in a plurality of light sources.

[0020] Figure 8 1 is a diagram showing an example of the frequency of occurrence of the number of light emissions of a plurality of light sources arranged along the Z-axis direction (that is, the light emission widths of the plurality of light sources).

[0021] Fig. 9 This is a graph schematically showing the relationship between the time for which the light emitting state is maintained and the occurrence frequency.

[0022] Fig.10 This is a block diagram schematically showing the structure of a tree-gap dappled sunlight simulation control device according to Embodiment 3 of the present disclosure.

[0023] Fig.11 This is a graph schematically showing the relationship between the amount of change from the previous brightness to the next brightness and the occurrence frequency.

[0024] Fig.12 This is a block diagram schematically showing the structure of a tree-gap dappled sunlight simulation control device according to Embodiment 4 of the present disclosure.

[0025] Fig.13 This is a diagram showing an example of the occurrence frequency of lighting of a plurality of light sources.

[0026] Fig.14 This is a diagram showing an example of the occurrence frequency of lighting of a plurality of light sources.

[0027] Fig.15 This is a graph schematically showing the relationship between the time for which the light emitting state is maintained and the occurrence frequency.

[0028] Fig.16 This is a graph schematically showing the relationship between the amount of change (absolute value) from the previous brightness to the next brightness and the occurrence frequency.

[0029] Fig.17 This is a block diagram schematically showing the structure of a tree-gap dappled sunlight simulation control device according to Embodiment 5 of the present disclosure. DETAILED DESCRIPTION

[0030] Implementation method 1.

[0031] Figure 1 This is a diagram schematically showing the tree-gap dappled sunlight simulation control device 100 according to the first embodiment of the present disclosure.

[0032] The tree-gap dappled sunlight simulation control device 100 includes a plurality of light sources 1, a single lens 2 that allows light beams from the plurality of light sources 1 to pass through, and a tree-gap dappled sunlight light source control module 3 that controls the positions of the plurality of light sources 1. The plurality of light sources 1 are collectively referred to as a "light source unit".

[0033] Figure 2 This is a diagram showing an example of the relationship among a plurality of light sources 1, lenses 2, and a projection surface.

[0034] The lens 2 is arranged in front of the plurality of light sources 1. That is, the lens 2 is arranged so as to face the plurality of light sources 1. Figure 1 In the example shown, the lens 2 is a convex lens. The focal length of the lens 2 is F.

[0035] The central axis Z1 is perpendicular to the optical axis Z2 of the lens 2. The distance A is the distance from the central axis Z1 of the lens 2 to each light source 1 and is the distance on a straight line parallel to the optical axis Z2. In this case, the relationship between the focal length F and the distance A is F<A. The light patterns of the multiple light sources 1 are projected onto the projection surface. Each light source 1 is connected to the tree gap mottled daylight light source control module 3 and is controlled by the tree gap mottled daylight light source control module 3.

[0036] In the present application, the distance from the center Z0 of the lens 2 refers to the distance from the center Z0 of the lens 2 on a straight line parallel to the optical axis Z2, and the distance from the central axis Z1 of the lens 2 refers to the distance from the central axis Z1 of the lens 2 on a straight line parallel to the optical axis Z2.

[0037] exist Figure 2 In the example shown, a plurality of light sources 1 are arranged parallel to the central axis Z1. A focused projection image 1FF is projected to a position at a distance B from the central axis Z1 of the lens 2. Figure 2 In the example shown, the number of light sources 1 is 12. Figure 2 , a projection image 1FF corresponding to the light source 1 in the upper half of the 12 light sources 1 is shown.

[0038] exist Figure 2In the example shown, the relationship (1 / A)+(1 / B)=(1 / F) holds. Therefore, when the relationship between the focal length F and the distance A satisfies F<A, B is a positive value, and the light emission patterns of the plurality of light sources 1 are projected onto the projection surface.

[0039] When the light pattern of the light source 1 is projected at a magnification α=(b / a), the focal length F is represented by F={α / (α+1)}×A. Therefore, the components of the tree-dappled sunlight simulation control device 100 are included in a positional relationship satisfying F<A.

[0040] If the condition between the focal length F and the distance A is F<A, the light patterns of the multiple light sources 1 are projected onto the projection surface, but the upper limit side is also pre-assumed. The sunlight arriving from almost infinity is a parallel beam, and the dappled sunlight between the tree gaps will theoretically become a clearly focused projection image in any projection state. However, in reality, a blurred projection image is formed due to the diffraction of light, so even if the magnification α and the focal length F are determined in such a way that the focal length F becomes F={α / (α+1)}×A, it is not necessary to determine the distance A.

[0041] So, if Figure 2 As shown, the positions of the plurality of light sources 1 are set to a position where the distance C from the central axis Z1 of the lens 2 is. Figure 2 In the embodiment, the plurality of light sources 1 arranged at a distance C from the central axis Z1 of the lens 2 is represented as "plurality of light sources 1A". In this case, the plurality of light sources 1A are also arranged parallel to the central axis Z1 of the lens 2. The distance C is longer than the distance A. In this case, Figure 2 As shown by the dotted lines, the light beams from multiple light sources 1A are gathered at a position at a distance X from the center axis Z1 of the lens 2, a focused projection image 1FF is formed at a position at a distance X from the center axis Z1 of the lens 2, and a blurred projection image 1FC including a difference D with the projection image 1FF is formed at a position at a distance B from the center axis Z1 of the lens 2.

[0042] Figure 3 1 is a diagram schematically showing a projection image 1FF formed at a position at a distance X from the central axis Z1 of the lens 2 and a projection image 1FC formed at a position at a distance B from the central axis Z1 of the lens 2 .

[0043] about Figure 2 When the light sources in the upper half of the plurality of light sources 1A shown in the figure are set to be lit, extinguished, lit, extinguished, lit, and extinguished in sequence from the top, the light emission pattern from each light source 1A is as follows: Figure 3 As shown, a projection image 1FF is formed at a position at a distance X from the central axis Z1 of the lens 2 , and a blurred projection image 1FC is formed on a projection plane at a position at a distance B from the central axis Z1 of the lens 2 .

[0044] When the projection image 1FF is smoothed and made uniform, it is considered that the length Y of the projection image 1FF is averaged when the length of the blurred projection image 1FC becomes Y+D=2Y. Therefore, the distance C needs to be limited so that the difference D is smaller than the length Y.

[0045] When multiple light sources 1A are located at a position where the distance from the central axis Z1 of the lens 2 is C, let the length of the upper half or the lower half of the multiple light sources 1A be y, and let the length of the projection image 1FF formed at a position where the distance from the central axis Z1 of the lens 2 is X be Y. At this time, the following relationship holds.

[0046] X / C=Y / y

[0047] When multiple light sources 1A are located at a distance C from the central axis Z1 of the lens 2, let the length of the upper half or the lower half of the multiple light sources 1A be y, and let the length of the projection image 1FC formed on the projection plane at a distance B from the central axis Z1 of the lens 2 be "Y+D", at this time, the following relationship holds.

[0048] B / C=(Y+D) / y

[0049] In order to suppress averaging due to blurring, the relationship between the difference D and the length Y is set to D<Y. That is, the difference D is set to be smaller than the length Y. In this case, the following relationship holds.

[0050] B / C<(Y+Y) / y=2Y / y=2X / C

[0051] Therefore, it is necessary to place a plurality of light sources 1A at a distance C from the central axis Z1 of the lens 2 so as to satisfy B < 2X. The following relationship holds true for the distance A from the central axis Z1 of the lens 2 having a focal length F to each light source 1 and the distance B from the central axis Z1 of the lens 2 to the projection plane.

[0052] (1 / A)+(1 / B)=(1 / F)

[0053] B=(A×F) / (AF)<2X

[0054] The following relationship holds true for the distance C from the central axis Z1 of the lens 2 having a focal length F to each light source 1A and the distance X from the central axis Z1 of the lens 2 to the focused position.

[0055] (1 / C)+(1 / X)=(1 / F)

[0056] X=(C×F) / (CF)

[0057] When B<2X, the difference D, which is the magnitude of blur, is smaller than the length Y. Therefore, when the following relationship is satisfied, averaging due to blur can be suppressed.

[0058] B=(A×F) / (AF)<2X

[0059] =(2×C×F) / (CF)

[0060] As described above, the positions of the plurality of light sources 1 and the position of the lens 2 having the focal length F are positions where the relationship between the focal length F and the distance A from the central axis Z1 of the lens 2 to each of the plurality of light sources 1 satisfies F<A. That is, the tree-dappled sunlight light source control module 3 controls the positions of the plurality of light sources 1 so as to satisfy F<A. In this case, when the plurality of light sources 1 are arranged in a manner satisfying A≤C and (A×F) / (AF)<(2×C×F) / (CF), the distance B from the central axis Z1 of the lens 2 to the projection surface becomes a positive value, and a projection image in which the difference D as the size of blur is suppressed can be obtained. Thus, light such as tree-dappled sunlight seen by humans can be simulated.

[0061] As described above, according to this embodiment, a tree-dappled sunlight simulation control device can be provided that can simulate light such as tree-dappled sunlight with a simple configuration. In addition, according to this embodiment, light simulating tree-dappled sunlight can be projected in an area larger than the light source unit.

[0062] The tree gap dappled daylight source control module 3 is composed of, for example, at least one processor and at least one memory. The processor is, for example, a central processing unit (CPU) that executes a program stored in the memory. In this case, the functions of each structural element of the tree gap dappled daylight source control module 3 are implemented by software, firmware, or a combination of software and firmware. The software and firmware can be stored in the memory in the form of a program. According to this structure, the program for implementing the functions of the tree gap dappled daylight source control module 3 is executed by a computer.

[0063] The memory is a computer-readable recording medium, and is, for example, a volatile memory such as Random Access Memory (RAM) and Read Only Memory (ROM), a nonvolatile memory, or a combination of a volatile memory and a nonvolatile memory.

[0064] The tree gap dappled daylight source control module 3 may also be composed of a processing circuit as dedicated hardware such as a single circuit or a composite circuit. In this case, the functions of each component of the tree gap dappled daylight source control module 3 are realized by the processing circuit.

[0065] Implementation method 2.

[0066] Figure 4 1 is a block diagram schematically showing the structure of the tree gap dappled sunlight simulation control device 100 according to Embodiment 2 of the present disclosure. Figure 4 The lens 2 is omitted in the figure.

[0067] In the second embodiment, the tree gap dappled sunlight light source control module 3 of the tree gap dappled sunlight simulation control device 100 includes a light source driving circuit 4, a lighting holding time fluctuation data generation circuit 5, a light emission quantity fluctuation data generation circuit 6, and a light emission lighting order fluctuation data generation circuit 7. The light source driving circuit 4 is composed of, for example, a plurality of light source driving circuits.

[0068] The tree gap dappled daylight light source control module 3 has light emission lighting sequence fluctuation data for determining the lighting sequence or extinguishing sequence of multiple light sources 1, light emission fluctuation data for determining the light source 1 to be emitted among the multiple light sources 1, and fluctuation data for determining the time to keep the multiple light sources 1 lit or extinguished.

[0069] The tree gap dappled daylight light source control module 3 uses the light emission lighting sequence fluctuation data to control the lighting sequence or extinguishing sequence of multiple light sources 1, uses the light emission fluctuation data to control the light source 1 to be emitted, and uses the fluctuation data to control the time to keep the multiple light sources 1 lit or extinguished.

[0070] The lighting holding time fluctuation data generating circuit 5 generates and outputs fluctuation data. The light emission number fluctuation data generating circuit 6 generates and outputs light emission fluctuation data. The light emission lighting sequence fluctuation data generating circuit 7 generates and outputs light emission lighting sequence fluctuation data.

[0071] The output from the light-emitting lighting sequence fluctuation data generating circuit 7 is input to the light-emitting quantity fluctuation data generating circuit 6, and the command to light up or turn off the plurality of light sources 1 is output from the light-emitting quantity fluctuation data generating circuit 6 and input to the light source driving circuit 4. The light source driving circuit 4 is a circuit that drives each light source 1 in a manner of lighting up or turning off. The holding time of the state of each light source 1 being lit or turned off is determined by the lighting holding time fluctuation data generating circuit 5, and the outputs from the light-emitting lighting sequence fluctuation data generating circuit 7 and the light-emitting quantity fluctuation data generating circuit 6 are updated.

[0072] Figure 5 This is a diagram showing an example of a change in the order of light emission and lighting or a change in the shift of lighting in the plurality of light sources 1 .

[0073] exist Figure 5 In the example shown, the state of 16×16 matrix light sources being on or off is shown, and the lighted portion is shown by a digital mosaic pattern to simulate the state of light leaking through the tree gaps as dappled sunlight.

[0074] exist Figure 5 The example shown is a diagram simulating a state where an object (e.g., a branch or a leaf) that blocks sunlight is swaying in the X-axis direction, and the light source that is turned on becomes a luminous point that reaches the ground as dappled sunlight between the tree gaps. Figure 5 The "0" in the figure is the center, and the luminous point of the positive direction is in the +X direction ( Figure 5 The light point of the negative direction graph moves to the -X direction ( Figure 5 in the left direction).

[0075] The light-emitting lighting sequence fluctuation data generating circuit 7 generates and outputs light-emitting lighting sequence fluctuation data, and the light-emitting lighting sequence fluctuation data is used to determine the light-emitting lighting sequence fluctuation data. Figure 5 The "0" in the figure is the center, and the light source 1 is lit up until it reaches the positive direction (for example, until +3) and the negative direction (for example, until -3), and each light source 1 is made to emit light. In this case, it is desired to generate and output the light-emitting lighting order fluctuation data for controlling not only the light-emitting point swinging in the X-axis direction but also the light-emitting point swinging in the direction perpendicular to the X-axis direction, and to express the swing in the two mutually orthogonal axis directions by making each light source 1 emit light.

[0076] Figure 6 1 is a diagram showing an example of the lighting occurrence frequency of a plurality of light sources 1 arranged along the X-axis direction.

[0077] The light-emitting lighting sequence fluctuation data generating circuit 7 is as follows, for example Figure 6 When the central light source among the plurality of light sources 1 arranged along the X-axis direction is set to "0", the light-emitting lighting sequence fluctuation data generating circuit 7 generates and outputs the following light-emitting lighting sequence fluctuation data, which is used to control each light source 1 so that the frequency of lighting increases from the positive side to +3 and the frequency of lighting increases from the negative side to -3.

[0078] On the other hand, the light-emitting lighting sequence fluctuation data generating circuit 7 generates and outputs light-emitting lighting sequence fluctuation data for controlling each light source 1 in a manner such that the frequency of lighting up decreases from +3 to +5, generates and outputs light-emitting lighting sequence fluctuation data for controlling each light source 1 in a manner such that the frequency of lighting up decreases from -3 to -5, and generates and outputs light-emitting lighting sequence fluctuation data for controlling the light source 1 in a manner such that the frequency of lighting up at the "0" position decreases.

[0079] By such control, the tree gap dappled sunlight simulation control device 100 realizes fluctuation control in which the frequency of stable swaying of the object blocking sunlight is high and the frequency of unstable swaying state is low. In other words, by making the occurrence frequency of the state of maintaining the lighting order at position 0 the highest, controlling to reduce the frequency of lighting up to +5 on the positive side of the lighting order, and controlling to reduce the frequency of lighting up to -5 on the negative side, it is possible to simulate a state in which the object blocking sunlight does not sway but sometimes sways.

[0080] Figure 7 This is a diagram showing an example of changes in the number of light emissions or changes in the light emission width in the plurality of light sources 1 .

[0081] exist Figure 7 In the example shown, the state of 16×16 matrix light sources being turned on or off is shown, and the lighted portion simulates the state of light leaking through the gaps between trees as dappled sunlight. Figure 7 The figure simulates an object (such as a branch or a leaf) blocking sunlight swaying in the Z-axis direction, and the light source 1 becomes a light-emitting point that reaches the sunlight through the gaps between the trees. The Z-axis direction is a direction perpendicular to the X-axis direction.

[0082] When the object blocking the sunlight swings in the Z-axis direction, Figure 7 The light source 1 at the position of "0" shown is the center. When the object blocking the sunlight moves away from the sun (the light source 1 in the tree gap dappled sunlight simulation control device 100), the width of the light point (i.e., the light emitting area) becomes smaller. When the object blocking the sunlight approaches the sun (the light source in the tree gap dappled sunlight simulation control device 100), the width of the light point (i.e., the light emitting area) becomes larger.

[0083] The light emission quantity fluctuation data generating circuit 6 generates and outputs light emission fluctuation data, which is used to control the light emission quantity (i.e., the light emission width of the plurality of light sources 1) to simulate a state where an object (e.g., a branch, a leaf) blocking sunlight sways in the Z-axis direction. For example, the light emission quantity fluctuation data generating circuit 6 generates and outputs light emission fluctuation data, which is used to control the lighting and extinguishing of the light source 1, such as enlarging or reducing an image.

[0084] Figure 8 1 is a diagram showing an example of the frequency of occurrence of the number of light emissions of the plurality of light sources 1 arranged along the Z-axis direction (that is, the light emission widths of the plurality of light sources 1 ).

[0085] The light emission quantity fluctuation data generating circuit 6 is, for example, Figure 8When the central light source among the plurality of light sources 1 arranged along the Z-axis direction is set to "0", the light emission quantity fluctuation data generating circuit 6 generates and outputs the following light emission fluctuation data, which is used to control each light source 1 so that the frequency of the light emission quantity changing from the positive side to +1 increases, and the frequency of the light emission quantity changing from the negative side to -1 increases.

[0086] On the other hand, the light emission quantity fluctuation data generating circuit 6 generates and outputs light emission fluctuation data for controlling each light source 1 in a manner that the frequency of light emission quantity changes from +1 to +2 decreases, generates and outputs light emission fluctuation data for controlling each light source 1 in a manner that the frequency of light emission quantity changes from -1 to -2 decreases, and generates and outputs light emission fluctuation data for controlling the light source 1 in a manner that the frequency of light emission quantity changes at the "0" position decreases.

[0087] By such control, the tree gap dappled sunlight simulation control device 100 realizes fluctuation control in which the frequency of stable swaying of the object blocking sunlight is high and the frequency of unstable swaying state is low. In other words, by making the frequency of the state of maintaining the position of the light emission number at "0" the highest, controlling to reduce the frequency of the light emission number change from the positive side to +2, and controlling to reduce the frequency of the light emission number change from the negative side to -2, it is possible to simulate a state in which the object blocking sunlight does not sway but sometimes sways.

[0088] The lighting holding time fluctuation data generating circuit 5 outputs the following fluctuation data to the lighting order fluctuation data generating circuit 7 and the lighting quantity fluctuation data generating circuit 6. The fluctuation data is used to control the holding time of each lighting state that changes the lighting state from the positive side to the negative side. For example, the lighting holding time fluctuation data generating circuit 5 determines the lighting order fluctuation data generating circuit 7. Figure 5 In the case of the change control from +2 to -2 shown in the figure, the fluctuation data for controlling the holding time of the light-emitting states of +2, +1, 0, -1 and -2 is output to the light-emitting lighting sequence fluctuation data generating circuit 7 and the light-emitting quantity fluctuation data generating circuit 6. By controlling the holding time of the light-emitting state, the swaying cycle of an object (such as a branch or a leaf) that blocks sunlight can be simulated.

[0089] Fig. 9 This is a graph schematically showing the relationship between the time for which the light emitting state is maintained and the occurrence frequency.

[0090] The lighting holding time fluctuation data generating circuit 5 is, for example, Fig. 9By controlling the frequency of occurrence of the state in which the light-emitting state is maintained for a long time to increase and the frequency of occurrence of the state in which the light-emitting state is maintained for a short time to decrease, it is possible to simulate a state in which a state in which an object blocking sunlight (such as a branch or a leaf) sways for a long period (i.e., a state of slow motion) becomes stable and a state in which a state in which an object blocking sunlight sways for a short period (i.e., a state of violent motion) occurs occasionally (e.g., a state in which a gust of wind blows).

[0091] As described above, according to this embodiment, the change direction, change range, and change period of the movement of the projection image of the dappled sunlight between the tree gaps seen by a person can be simulated. For example, the dappled sunlight between the tree gaps when an object blocking the light source 1 moves laterally due to wind or the like, or when the distance between the object blocking the light source and the light source 1 changes due to wind or the like can be simulated. In this way, the dappled sunlight between the tree gaps caused by the changes caused by the lateral movement of small branches or the vertical movement of branches can be simulated.

[0092] Implementation method 3.

[0093] Fig.10 1 is a block diagram schematically showing the structure of a tree-gap dappled sunlight simulation control device 100 according to Embodiment 3 of the present disclosure.

[0094] In the third embodiment, the tree gap dappled sunlight light source control module 3 of the tree gap dappled sunlight simulation control device 100 has at least one light source driving circuit 4, a lighting holding time fluctuation data generation circuit 5, a light emission quantity fluctuation data generation circuit 6, a light emission lighting sequence fluctuation data generation circuit 7, a light source illumination fluctuation data generation circuit 8, and a brightness boost light source control fluctuation data generation circuit 9. The light source driving circuit 4 is composed of, for example, a plurality of light source driving circuits.

[0095] The output from the light-emitting lighting sequence fluctuation data generation circuit 7 is input to the light-emitting quantity fluctuation data generation circuit 6. The light-emitting quantity fluctuation data generation circuit 6 outputs a command for controlling the lighting and extinguishing of the plurality of light sources 1, and the output is input to the light source illumination fluctuation data generation circuit 8 and the brightness-enhancing light source control fluctuation data generation circuit 9. The output from the brightness-enhancing light source control fluctuation data generation circuit 9 is input to the light source illumination fluctuation data generation circuit 8. The output from the light source illumination fluctuation data generation circuit 8 is input to the light source driving circuit 4. The light source driving circuit 4 drives the plurality of light sources 1 in a manner of lighting or extinguishing them.

[0096] The lighting holding time fluctuation data generating circuit 5 determines and outputs the holding time of the lighting or extinguishing state of the plurality of light sources 1. The output from the lighting holding time fluctuation data generating circuit 5 is input to the light emission lighting sequence fluctuation data generating circuit 7, the light emission number fluctuation data generating circuit 6, and the light source illumination intensity fluctuation data generating circuit 8. Thus, the outputs from the light emission lighting sequence fluctuation data generating circuit 7, the light emission number fluctuation data generating circuit 6, and the light source illumination intensity fluctuation data generating circuit 8 are updated.

[0097] As a device for simulating dappled sunlight between tree gaps, the tree gap dappled sunlight simulation control device 100 of embodiment 2 can simulate the swaying of objects (such as tree branches and leaves) that block sunlight. In contrast, the tree gap dappled sunlight simulation control device 100 of embodiment 3 can simulate the change in illumination of light leaking from objects that block sunlight.

[0098] The area of ​​light leakage formed by an object that blocks sunlight actually changes subtly at every moment, and due to the difference in this area, the amount of leaked light beams also changes. In addition, in addition to the area of ​​light leakage, the brightness also changes due to the sunlight itself being blocked by clouds. Even if the size of each of the multiple light sources 1 is the same, by controlling the multiple light sources 1 in a manner that causes the illumination to fluctuate when lit, it is possible to simulate the change in illumination of dappled sunlight between trees. For example, the dappled sunlight light source control module 3 changes the illumination of each of the multiple light sources 1 at a predetermined timing (also referred to as the "first timing"). As a result, in the tree-gap dappled sunlight simulation control device 100, it is possible to simulate the change in illumination of light leaking from an object that blocks sunlight.

[0099] The commands generated by the light-emitting lighting sequence fluctuation data generating circuit 7 and the light-emitting quantity fluctuation data generating circuit 6 are input to the light source illumination fluctuation data generating circuit 8. The light source illumination fluctuation data generating circuit 8 determines the illumination of each light source 1 when it is lit, and the output representing the determined illumination is input to the light source driving circuit 4.

[0100] Fig.11 This is a graph schematically showing the relationship between the amount of change from the previous brightness to the next brightness and the occurrence frequency.

[0101] The data occurrence frequency set by the light source illumination fluctuation data generating circuit 8 is, for example, Fig.11The light source illumination fluctuation data that updates the brightness according to the output timing of the lighting holding time fluctuation data generating circuit 5 is set so that the smaller the absolute value of the change from the brightness before the update to the next brightness after the update, the more frequent the occurrence, and the larger the absolute value of the change, the less frequent the occurrence. By this setting, it is possible to simulate the following situation: in nature, there are usually no major changes, small changes continue, and changes occur occasionally.

[0102] The brightness enhancement light source control fluctuation data generation circuit 9 simulates a state that is brighter than usual and occurs suddenly. For example, the brightness enhancement light source control fluctuation data generation circuit 9 simulates a state that is brighter than usual when a reflector exists in an object that blocks sunlight. In this case, the light source 1 that is designated to be lit by the light-emitting lighting sequence fluctuation data generation circuit 7 and the light-emitting quantity fluctuation data generation circuit 6 is made to emit light strongly at a timing (also referred to as "second timing") different from the data update timing (for example, first timing) of the lighting holding time fluctuation data generation circuit 5.

[0103] For example, when simulating a brighter state than usual in the tree gap dappled sunlight simulation control device 100, the tree gap dappled sunlight light source control module 3 increases the illuminance of any light source 1 among the plurality of light sources 1 to an illuminance higher than the highest illuminance at the first timing at a predetermined second timing. Thus, a brighter state than usual can be simulated in the tree gap dappled sunlight simulation control device 100.

[0104] Implementation method 4.

[0105] Fig.12 1 is a block diagram schematically showing the structure of a tree-gap dappled sunlight simulation control device 100 according to Embodiment 4 of the present disclosure.

[0106] In the fourth embodiment, the tree gap dappled sunlight light source control module 3 of the tree gap dappled sunlight simulation control device 100 includes a light source driving circuit 4, a lighting holding time fluctuation data generation circuit 5, a light emission quantity fluctuation data generation circuit 6, a light emission lighting sequence fluctuation data generation circuit 7, a light source illumination fluctuation data generation circuit 8, a brightness boost light source control fluctuation data generation circuit 9, and a disturbance input module 10. The light source driving circuit 4 is composed of, for example, a plurality of light source driving circuits.

[0107] The tree-gap dappled sunlight simulation control device 100 of the fourth embodiment is different from the tree-gap dappled sunlight simulation control device 100 of the third embodiment in that the tree-gap dappled sunlight light source control module 3 includes a disturbance input module 10 .

[0108] The disturbance input module 10 is, for example, a pressure sensor that measures pressure in the positive direction and the negative direction of each of the three axes X, Y, and Z. In this case, the pressure sensor measures wind pressure in each direction and outputs measurement data.

[0109] The disturbance input module 10 may be, for example, a wind speed sensor that measures the wind speed in the positive direction and the negative direction of each of the three axes X, Y, and Z. In this case, the wind speed sensor measures the wind speed in each direction and outputs the measurement data.

[0110] The output from the light-emitting lighting sequence fluctuation data generating circuit 7 is input to the light-emitting quantity fluctuation data generating circuit 6. The command for controlling the lighting and extinguishing of the plurality of light sources 1 is output from the light-emitting quantity fluctuation data generating circuit 6 and input to the light source illumination fluctuation data generating circuit 8 and the brightness-boosting light source control fluctuation data generating circuit 9.

[0111] The output from the brightness enhancement light source control fluctuation data generating circuit 9 is input to the light source illumination fluctuation data generating circuit 8, and the output from the light source illumination fluctuation data generating circuit 8 is input to the light source driving circuit 4. The light source driving circuit 4 drives the plurality of light sources 1 to turn on or off.

[0112] The lighting holding time fluctuation data generating circuit 5 determines and outputs the holding time of the lighting or extinguishing state of the plurality of light sources 1. The output from the lighting holding time fluctuation data generating circuit 5 is input to the light emission lighting sequence fluctuation data generating circuit 7, the light emission number fluctuation data generating circuit 6, and the light source illumination intensity fluctuation data generating circuit 8. Thus, the outputs from the light emission lighting sequence fluctuation data generating circuit 7, the light emission number fluctuation data generating circuit 6, and the light source illumination intensity fluctuation data generating circuit 8 are updated.

[0113] The tree gap dappled daylight light source control module 3 uses the measurement data measured by the interference input module 10 to correct the light-emitting lighting sequence fluctuation data, light-emitting fluctuation data and fluctuation data. Specifically, the output from the interference input module 10 is input to the light-emitting lighting sequence fluctuation data generation circuit 7, the light-emitting quantity fluctuation data generation circuit 6, the lighting holding time fluctuation data generation circuit 5, and the light source illumination fluctuation data generation circuit 8, and the data generated by these circuits are corrected.

[0114] The measurement data output corresponding to the XY axis directions detected by the disturbance input module 10 is input to the light emission lighting order fluctuation data generation circuit 7 , and the measurement data output corresponding to the Z axis direction is input to the light emission quantity fluctuation data generation circuit 6 .

[0115] The tree gap dappled daylight light source control module 3 corrects the illumination of each of the plurality of light sources 1 that change at the first timing using the measurement data measured by the interference input module 10. In this case, for example, the interference input module 10 outputs the average value or the maximum absolute value data of the absolute value measurement data in the XYZ directions to the lighting holding time fluctuation data generation circuit 5 and the light source illumination fluctuation data generation circuit 8.

[0116] Fig.13 It is a diagram showing an example of the occurrence frequency of lighting of the plurality of light sources 1 .

[0117] When the wind speed disturbance or wind pressure disturbance in the X-axis direction and the Y-axis direction becomes larger, the light-emitting lighting sequence fluctuation generating circuit 7 is configured to generate a light-emitting lighting sequence fluctuation according to the wind speed disturbance or wind pressure disturbance in the X-axis direction and the Y-axis direction. Figure 6 The data output frequency shown is as follows: Fig.13 The wave action is determined as shown.

[0118] Since the interference input increases in the X-axis direction and the Y-axis direction, the tree gap mottled daylight source control module 3 performs the following fluctuating control: Figure 5 With the position of "0" shown as the center, the lighting frequency is high from the positive side to +5 and high from the negative side to -5, and the lighting state does not occur at the position of "0". Thus, the tree gap dappled sunlight simulation control device 100 can simulate fluctuations in which the frequency of objects blocking sunlight swaying greatly is high and the frequency of fixed states is low.

[0119] Fig.14 It is a diagram showing an example of the occurrence frequency of lighting of the plurality of light sources 1 .

[0120] When the wind speed disturbance or wind pressure disturbance in the Z-axis direction becomes larger, the light emission quantity fluctuation data generating circuit 6 generates, for example, Figure 8 The data output frequency shown is as follows: Fig.14 Since the disturbance input increases in the Z-axis direction, the tree gap dappled daylight light source control module 3 controls the fluctuation as follows: Figure 7 With "0" as the center, the frequency of changes in the number of lights or the width of lights is high from the positive side to +2, and the frequency of changes in the number of lights or the width of lights is high from the negative side to -2, and the state where the number of lights or the width of lights changes at the position of "0" does not occur. Thus, the tree gap dappled sunlight simulation control device 100 can simulate fluctuations in which the frequency of objects blocking sunlight swaying greatly is high and the frequency of fixed states is low.

[0121] Fig.15 This is a graph schematically showing the relationship between the time for which the light emitting state is maintained and the occurrence frequency.

[0122] When the wind speed disturbance or wind pressure disturbance in the XYZ direction becomes larger, the lighting holding time fluctuation data generating circuit 5 generates, for example, Fig. 9 The data output frequency shown is as follows: Fig.15 By controlling to increase the frequency of the state of maintaining the light-emitting state for a short time and reduce the frequency of the state of maintaining the light-emitting state for a long time, it is possible to simulate a state in which the state of the object blocking the sunlight (such as branches and leaves) swaying with a short period (i.e., a state of violent movement) is stable and the state of the object blocking the sunlight swaying with a long period (i.e., a state of slow movement) is difficult to occur.

[0123] Fig.16 This is a graph schematically showing the relationship between the amount of change (absolute value) from the previous brightness to the next brightness and the occurrence frequency.

[0124] When the wind speed disturbance or wind pressure disturbance in the XYZ direction becomes larger, the light source illumination fluctuation data generating circuit 8 generates, for example, Fig.11 The data output frequency shown is as follows: Fig.16 The data output frequency is determined as shown in the figure and the operation is performed. The light source illumination fluctuation data that updates the brightness according to the output timing of the lighting holding time fluctuation data generation circuit 5 is set so that the greater the absolute value change from the brightness before the update to the next brightness after the update, the greater the occurrence frequency, and the smaller the absolute value change, the less the occurrence frequency. It is possible to simulate the following situation: when the movement range of an object (such as a branch or a leaf) that blocks sunlight becomes larger due to interference and the movement cycle becomes faster, the change in the beam of sunlight leakage or the change in illumination becomes larger.

[0125] As described above, according to the present embodiment, for example, when corrections are made such as shortening the lighting time according to the input level (for example, the strength of the wind) to maintain the fluctuation data range, increasing the light-emitting lighting order fluctuation data, expanding the light-emitting quantity fluctuation data range, and increasing the light source illumination fluctuation data range, it is possible to simulate the situation where dappled sunlight between trees changes dramatically when the wind becomes stronger.

[0126] Implementation method 5.

[0127] Fig.17 1 is a block diagram schematically showing the structure of a tree-gap dappled sunlight simulation control device 100 according to Embodiment 5 of the present disclosure.

[0128] In the fifth embodiment, the tree-gap dappled sunlight simulation control device 100 includes a lens position driving unit 11 in addition to the plurality of light sources 1 , the lens 2 , and the tree-gap dappled sunlight light source control module 3 .

[0129] The tree-gap sunlight simulation control device 100 of the fifth embodiment is different from the tree-gap sunlight simulation control device 100 of the fourth embodiment in that it includes a lens position driving unit 11 .

[0130] The lens position driving unit 11 maintains the position of the lens 2 and adjusts the distance between the lens 2 and the plurality of light sources 1. The lens position driving unit 11 has, for example, a driving circuit capable of adjusting the position of the lens 2. The lens position driving unit 11 may also be, for example, a motor such as a linear motor capable of adjusting the position of the lens 2.

[0131] The light-emitting lighting sequence fluctuation data generating circuit 7 outputs the command for controlling the lighting and extinguishing of the plurality of light sources 1 to the light source illumination fluctuation data generating circuit 8 and the brightness-enhancing light source control fluctuation data generating circuit 9. The output from the light-emitting lighting sequence fluctuation data generating circuit 7 is input to the light source illumination fluctuation data generating circuit 8 and the brightness-enhancing light source control fluctuation data generating circuit 9.

[0132] The output from the brightness enhancement light source control fluctuation data generating circuit 9 is input to the light source illumination fluctuation data generating circuit 8, and the output from the light source illumination fluctuation data generating circuit 8 is input to the light source driving circuit 4. The light source driving circuit 4 drives the plurality of light sources 1 to turn on or off.

[0133] The lighting holding time fluctuation data generating circuit 5 determines and outputs the holding time of the lighting or extinguishing state of the plurality of light sources 1. The output from the lighting holding time fluctuation data generating circuit 5 is input to the light emission lighting sequence fluctuation data generating circuit 7, the light emission quantity fluctuation data generating circuit 6, and the light source illumination intensity fluctuation data generating circuit 8. Thus, the outputs from the light emission lighting sequence fluctuation data generating circuit 7, the light emission quantity fluctuation data generating circuit 6, and the light source illumination intensity fluctuation data generating circuit 8 are updated.

[0134] The tree gap dappled daylight light source control module 3 uses the measurement data measured by the interference input module 10 to correct the light-emitting lighting sequence fluctuation data, light-emitting fluctuation data and fluctuation data. Specifically, the output from the interference input module 10 is input to the light-emitting lighting sequence fluctuation data generation circuit 7, the light-emitting quantity fluctuation data generation circuit 6, the lighting holding time fluctuation data generation circuit 5, and the light source illumination fluctuation data generation circuit 8, and the data generated by these circuits are corrected.

[0135] The tree gap dappled daylight source control module 3 outputs a command for adjusting the distance between the lens 2 and the plurality of light sources 1 to the lens position driving unit 11. That is, the tree gap dappled daylight source control module 3 controls the lens position driving unit 11. For example, the output from the light emission quantity fluctuation data generating circuit 6 is input to the lens position driving unit 11. Thus, the lens position driving unit 11 adjusts the distance between the lens 2 and the plurality of light sources 1 based on the command from the tree gap dappled daylight source control module 3.

[0136] In the light emission quantity fluctuation data generating circuit 6, the number of light emission sources simulating the dappled sunlight between the tree gaps is not controlled, but the distance between the lens 2 and the plurality of light sources 1 is controlled. Figure 7 The changing pattern of dappled sunlight through the tree gaps shown.

[0137] As described above, according to the present embodiment, by using the light emission quantity fluctuation data of the light source 1 to control the distance A between the light source 1 and the lens 2, the change in the distance between the light source 1 and the object blocking the light source 1 can be simulated, and the dappled sunlight between the tree gaps with a blurred feeling can be simulated. In other words, without directly controlling the light emission quantity of the light source 1, the change in the simulated light emission area can be obtained instead of the digital light emission quantity (i.e., light emission area) change, so the dappled sunlight between the tree gaps can be simulated more naturally.

[0138] The features of the above-described embodiments and modifications can be combined with each other.

[0139] Description of Reference Numerals

[0140] 1. light source, 2. lens, 3. tree gap mottled daylight light source control module, 4. light source driving circuit, 5. lighting holding time fluctuation data generating circuit, 6. light quantity fluctuation data generating circuit, 7. light lighting sequence fluctuation data generating circuit, 8. light source illumination fluctuation data generating circuit, 9. brightness enhancement light source control fluctuation data generating circuit, 10. interference input module, 11. lens position driving unit, 100. tree gap mottled daylight simulation control device.

Claims

1. A tree gap mottled sunlight simulation control device, wherein: The tree gap mottled sunlight simulation control device comprises: Single lens; a plurality of light sources arranged parallel to a central axis of the lens that is perpendicular to the optical axis; and A tree gap dappled daylight light source control module controls the positions of the multiple light sources. When the focal length of the lens is assumed to be F and the distance from the central axis to each of the plurality of light sources is assumed to be A, the tree gap dappled daylight light source control module controls the positions of the plurality of light sources so that F<A is satisfied.

2. The tree gap dappled sunlight simulation control device according to claim 1, wherein: When the distance from the central axis to each of the plurality of light sources is C, A≤C and (A×F) / (AF)<(2×C×F) / (CF) are satisfied.

3. The tree gap dappled sunlight simulation control device according to claim 1 or 2, wherein: The tree gap dappled daylight source control module comprises: Lighting sequence fluctuation data, which determines the lighting sequence or extinguishing sequence of the plurality of light sources; Light emission fluctuation data, which determines the light source to be emitted from among the plurality of light sources; as well as Fluctuation data, which determines the time for which the plurality of light sources are kept on or off, The tree gap dappled daylight light source control module uses the light lighting sequence fluctuation data to control the lighting sequence or extinguishing sequence of the multiple light sources, uses the light emission fluctuation data to control the light sources to be emitted, and uses the fluctuation data to control the time for keeping the multiple light sources lit or extinguished.

4. The tree gap dappled sunlight simulation control device according to claim 1 or 2, wherein: The tree-gap dappled daylight light source control module changes the illuminance of each of the plurality of light sources at a first timing, and increases the illuminance of any of the plurality of light sources to a higher illuminance than the highest illuminance at the first timing at a second timing different from the first timing.

5. The tree gap dappled sunlight simulation control device according to claim 3, wherein: The tree gap dappled sunlight source control module has an interference input module for measuring wind speed or pressure. The tree gap dappled daylight light source control module uses the measurement data measured by the interference input module to correct the light emission lighting sequence fluctuation data, the light emission fluctuation data, and the fluctuation data.

6. The tree gap dappled sunlight simulation control device according to claim 4, wherein: The tree gap dappled sunlight source control module has an interference input module for measuring wind speed or pressure. The tree-gap dappled daylight light source control module corrects the illuminance of each of the plurality of light sources that changes at the first timing using the measurement data measured by the disturbance input module.

7. The tree gap dappled sunlight simulation control device according to any one of claims 1 to 6, wherein: The tree gap dappled sunlight simulation control device further comprises a lens position driving unit, the lens position driving unit adjusting the distance between the lens and the plurality of light sources. The lens position driving unit adjusts the distance between the lens and the plurality of light sources based on a command from the tree gap dappled sunlight light source control module.

Images