Tree gap dappled sunlight simulation control device

Abstract

The tree gap dappled sunlight simulation control device (100) comprises a plurality of light sources (1), a single lens (2), and a tree gap dappled sunlight light 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 dappled sunlight light source control module (3) controls the positions of the plurality of light sources (1) so 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 through tree gaps using a plurality of lenses has been proposed (for example, see Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

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

[0006] Problems to be solved by the invention

[0007] Conventional technology requires the use of multiple lenses, which results in a problem of increased device size.

[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 configuration.

[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 arranged parallel to a central axis of the lens 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 that F<A is satisfied.

[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 the tree-dappled sunlight with a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a diagram schematically showing the tree-dappled sunlight simulation control device according to the first embodiment 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 configuration of a tree-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 lighting frequency 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 the light emission width 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 from a plurality of light sources arranged along the Z-axis direction (ie, the light emission widths of the plurality of light sources).

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

[0022] Figure 10 This is a block diagram schematically showing the configuration of a tree-dappled sunlight simulation control device according to a third embodiment of the present disclosure.

[0023] Figure 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] Figure 12 This is a block diagram schematically showing the configuration of a tree-dappled sunlight simulation control device according to a fourth embodiment of the present disclosure.

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

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

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

[0028] Figure 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] Figure 17 This is a block diagram schematically showing the configuration of a tree-dappled sunlight simulation control device according to a fifth embodiment of the present disclosure. DETAILED DESCRIPTION

[0030] Implementation method 1.

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

[0032] The tree-dappled sunlight simulation control device 100 includes multiple light sources 1, a single lens 2 that allows light beams from the multiple light sources 1 to pass through, and a tree-dappled sunlight light source control module 3 that controls the positions of the multiple light sources 1. The multiple 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 in a manner opposite to the plurality of light sources 1. Figure 1 In the example shown, the lens 2 is a convex lens and has a focal length of F.

[0035] The central axis Z1 is perpendicular to the optical axis Z2 of the lens 2. Distance A is the distance from the central axis Z1 of the lens 2 to each light source 1, and is the distance along a straight line parallel to the optical axis Z2. In this case, the relationship between the focal length F and 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 and controlled by the tree-gap dappled daylight light source control module 3.

[0036] In this 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 expressed 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 focal length F and distance A satisfies F < A, the light patterns of multiple light sources 1 are projected onto the projection surface, but this also assumes an upper limit. Sunlight arriving from almost infinite distance is parallel, and dappled sunlight through tree slits theoretically results in a sharply focused projection image under any projection conditions. However, in reality, diffraction of light causes blurred projection images. Therefore, even if the magnification factor α and focal length F are determined so that F = {α / (α+1)} × A, it is not necessary to determine distance A.

[0041] So, if Figure 2 As shown in FIG, the positions of the plurality of light sources 1 are set to positions where the distance C from the central axis Z1 of the lens 2 is set. Figure 2 In FIG. 1 , the plurality of light sources 1 arranged at a distance C from the central axis Z1 of the lens 2 are referred to 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 are set to be on, off, on, off, on, off, 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] Assuming that the projection image 1FF is smoothed and uniform, the blurred projection image 1FC is considered to be averaged relative to the length Y of the projection image 1FF when the length 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 distance C from the central axis Z1 of the lens 2, let the length of the upper half or lower half of the multiple light sources 1A be y, and let the length of the projection image 1FF formed at a distance X from the central axis Z1 of the lens 2 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 surface 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 multiple 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 multiple light sources 1 and the lens 2 having a focal length F are such that the relationship between the focal length F and the distance A from the central axis Z1 of the lens 2 to each of the multiple light sources 1 satisfies F < A. In other words, the tree-dappled sunlight light source control module 3 controls the positions of the multiple light sources 1 so that F < A. In this case, when the multiple light sources 1 are arranged so that 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 plane becomes positive, and a projected image is obtained in which the difference D, which represents the magnitude of blur, is suppressed. This makes it possible to simulate light similar to the tree-dappled sunlight seen by humans.

[0061] As described above, this embodiment provides a tree-dappled sunlight simulation control device that can simulate light like tree-dappled sunlight with a simple configuration. Furthermore, this embodiment can project light simulating tree-dappled sunlight over an area larger than the light source unit.

[0062] The tree-gap dappled daylight source control module 3 is comprised, for example, of 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 the various components of the tree-gap dappled daylight source control module 3 are implemented using 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. Based on 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-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-dappled daylight source control module 3 are realized by the processing circuit.

[0065] Implementation method 2.

[0066] Figure 4 This is a block diagram schematically showing the structure of the tree gap dappled sunlight simulation control device 100 according to the second embodiment 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 maintenance time fluctuation data generation circuit 5, a light emission quantity fluctuation data generation circuit 6, and a light emission lighting sequence 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 that determines the lighting sequence or extinguishing sequence of multiple light sources 1, light emission fluctuation data that determines the light source 1 to be emitted among the multiple light sources 1, and fluctuation data that determines 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 lighting sequence fluctuation data to control the lighting sequence or extinguishing sequence of multiple light sources 1, uses the light lighting 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 lighting sequence fluctuation data generation circuit 7 is input to the light quantity fluctuation data generation circuit 6. The command to turn on or off the multiple light sources 1 is output from the light quantity fluctuation data generation circuit 6 and input to the light source driver circuit 4. The light source driver circuit 4 drives each light source 1 to turn on or off. The duration for which each light source 1 remains on or off is determined by the lighting retention time fluctuation data generation circuit 5. The outputs from the lighting sequence fluctuation data generation circuit 7 and the light quantity fluctuation data generation circuit 6 are updated accordingly.

[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, 16×16 matrix light sources are shown to be on or off, and the lighted portion simulates light leaking through tree gaps as dappled sunlight, as shown by a digital mosaic pattern.

[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 becomes a luminous point that reaches the ground as dappled sunlight between the tree branches. Figure 5 The "0" in the figure is the center, and the luminous point in the positive direction is in the +X direction ( Figure 5 The luminous point of the negative direction moves to the -X direction ( Figure 5 Move to the left in the .

[0075] The light-emitting lighting sequence fluctuation data generating circuit 7 generates and outputs light-emitting lighting sequence fluctuation data, which is used to determine the light-emitting lighting sequence fluctuation data. Figure 5 In the example, "0" is used as the center, and the light source 1 is illuminated in the positive direction (for example, to +3) or the negative direction (for example, to -3), and each light source 1 is caused to emit light. In this case, it is desirable to generate and output light-emitting lighting sequence fluctuation data for controlling not only the light-emitting point oscillation in the X-axis direction but also the light-emitting point oscillation in a direction perpendicular to the X-axis direction, so that the oscillation in the two mutually orthogonal directions is expressed by emitting light from each light source 1.

[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-emission lighting sequence fluctuation data generating circuit 7 generates and outputs the following light-emission lighting sequence fluctuation data. This light-emission lighting sequence fluctuation data 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] Through this control, the tree-dappled sunlight simulation control device 100 achieves fluctuation control, which increases the frequency of stable swaying of objects blocking sunlight and reduces the frequency of unstable swaying. In other words, by maximizing the frequency of maintaining the lighting order at position 0, controlling to reduce the frequency of lighting in the positive range of the lighting order to +5, and controlling to reduce the frequency of lighting in the negative range of -5, it is possible to simulate a state where an object blocking sunlight does not sway, but occasionally 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 16×16 matrix light sources are shown to be on or off, and the lit portion simulates the state of light leaking through the treetops as dappled sunlight. Figure 7 The image simulates an object blocking sunlight (such as a branch or leaf) swaying in the Z-axis direction, and the light source 1 becomes a light point that reaches the sun as dappled sunlight through the tree gaps. The Z-axis direction is 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 daylight simulation control device 100), the width of the luminous point (i.e., the luminous area) becomes smaller. When the object blocking the sunlight approaches the sun (the light source in the tree gap dappled daylight simulation control device 100), the width of the luminous point (i.e., the luminous area) becomes larger.

[0083] The light emission quantity fluctuation data generation circuit 6 generates and outputs light emission fluctuation data for controlling the light emission quantity (i.e., the light emission width of the plurality of light sources 1) to simulate the state of an object blocking sunlight (e.g., a tree branch or a leaf) swaying in the Z-axis direction. For example, the light emission quantity fluctuation data generation circuit 6 generates and outputs light emission fluctuation data for controlling the lighting and extinguishing of the light sources 1, such as for zooming in or out of an image.

[0084] Figure 8 This is a diagram showing an example of the frequency of occurrence of the number of light emissions from 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. This light emission fluctuation data is used to control each light source 1 so that the frequency of light emission quantity changes from the positive side to +1 increases, and the frequency of light emission quantity changes from the negative side to -1 increases.

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

[0087] Through this control, the tree-dappled sunlight simulation control device 100 achieves fluctuation control, which increases the frequency of stable swaying of an object blocking sunlight and reduces the frequency of unstable swaying. In other words, by maximizing the frequency of maintaining the light emission at "0," controlling to reduce the frequency of changes in the light emission from the positive side to +2, and controlling to reduce the frequency of changes in the light emission from the negative side to -2, it is possible to simulate a state where an object blocking sunlight does not sway, but occasionally 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 from the positive side to the negative side. For example, 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. Figure 5 In the case of the change control from +2 to -2 shown, fluctuation data for controlling the holding time of the lighting states of +2, +1, 0, -1, and -2 is output to the lighting sequence fluctuation data generation circuit 7 and the lighting quantity fluctuation data generation circuit 6. By controlling the holding time of these lighting states, the swaying cycle of an object (such as a branch or leaf) that blocks sunlight can be simulated.

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

[0090] The lighting holding time fluctuation data generating circuit 5 is as follows, for example Figure 9By controlling the frequency of occurrence to increase the frequency of states in which the light-emitting state is maintained for a long time and reducing the frequency of states in which the light-emitting state is maintained for a short time, it is possible to simulate a state in which a state in which an object blocking sunlight (such as a branch or leaf) sways for a long period (i.e., a state of slow motion) becomes stable, while a state in which a state in which the 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, this embodiment can simulate the direction, range, and period of movement of the projection image of dappled sunlight seen by humans through tree dappled sunlight. For example, this can simulate dappled sunlight through tree dappled sunlight caused by wind or other factors, such as when an object blocking light source 1 moves laterally or when the distance between the object and light source 1 changes due to wind or other factors. This can simulate dappled sunlight through tree dappled sunlight caused by changes in the lateral or vertical movement of small branches.

[0092] Implementation method 3.

[0093] Figure 10 This is a block diagram schematically showing the configuration of a tree-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 includes at least one light source driving circuit 4, a lighting maintenance time fluctuation data generation circuit 5, a light quantity fluctuation data generation circuit 6, a light 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 may be composed of, for example, a plurality of light source driving circuits.

[0095] The output from the light-emission lighting sequence fluctuation data generation circuit 7 is input to the light-emission quantity fluctuation data generation circuit 6. The light-emission quantity fluctuation data generation circuit 6 outputs a command for controlling the lighting and extinguishing of the plurality of light sources 1. This output is input to the light source illumination fluctuation data generation circuit 8 and the brightness-boosting light source control fluctuation data generation circuit 9. The output from the brightness-boosting 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 drive circuit 4. The light source drive circuit 4 drives the plurality of light sources 1 to light up or extinguish.

[0096] The lighting maintenance time fluctuation data generation circuit 5 determines and outputs the maintenance time of the multiple light sources 1 in the lit or extinguished state. The output from the lighting maintenance time fluctuation data generation circuit 5 is input to the light emission lighting sequence fluctuation data generation circuit 7, the light emission number fluctuation data generation circuit 6, and the light source illumination intensity fluctuation data generation circuit 8. As a result, the outputs from the light emission lighting sequence fluctuation data generation circuit 7, the light emission number fluctuation data generation circuit 6, and the light source illumination intensity fluctuation data generation circuit 8 are updated.

[0097] As a device for simulating dappled sunlight through gaps between trees, the tree-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-dappled sunlight simulation control device 100 of embodiment 3 can simulate the changes in the 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 of sunlight itself also changes due to, for example, 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 such a way that the illuminance fluctuates when lit, it is possible to simulate the change in illuminance of dappled sunlight between trees. For example, the dappled sunlight light source control module 3 changes the illuminance of each of the multiple light sources 1 at a predetermined timing (also called the "first timing"). Thus, in the dappled sunlight simulation control device 100, it is possible to simulate the change in illuminance of light leaking from an object that blocks sunlight.

[0099] The commands generated by the light-emission lighting sequence fluctuation data generation circuit 7 and the light-emission quantity fluctuation data generation circuit 6 are input to the light source illumination fluctuation data generation circuit 8. The light source illumination fluctuation data generation 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 drive circuit 4.

[0100] Figure 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, Figure 11The light source illumination fluctuation data, which updates the brightness based on the output timing of the lighting maintenance time fluctuation data generation 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 it occurs, and the larger the absolute value of the change, the less frequent it occurs. This setting simulates the situation in nature where there are usually no major changes, but slight changes occur continuously and occasionally.

[0102] The brightness-boosting light source control fluctuation data generation circuit 9 simulates a sudden, brighter-than-usual state. For example, the brightness-boosting light source control fluctuation data generation circuit 9 simulates a brighter-than-usual state caused by the presence of a reflective object blocking sunlight. In this case, the light source 1, which has been designated to be lit by the light-emission lighting sequence fluctuation data generation circuit 7 and the light-emission quantity fluctuation data generation circuit 6, is caused to emit intense light at a timing (also referred to as "second timing") that is different from the data update timing (e.g., first timing) of the light-emission holding time fluctuation data generation circuit 5.

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

[0104] Implementation method 4.

[0105] Figure 12 This is a block diagram schematically showing the configuration of a tree-dappled sunlight simulation control device 100 according to a fourth embodiment 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 maintenance time fluctuation data generation circuit 5, a light quantity fluctuation data generation circuit 6, a light 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-dappled sunlight simulation control device 100 of the fourth embodiment is different from the tree-dappled sunlight simulation control device 100 of the third embodiment in that the tree-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 and negative directions 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 and negative directions 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-emission lighting sequence fluctuation data generation circuit 7 is input to the light-emission quantity fluctuation data generation circuit 6. The command for controlling the lighting and extinguishing of the plurality of light sources 1 is output from the light-emission quantity fluctuation data generation circuit 6 and input to the light source illumination fluctuation data generation circuit 8 and the brightness-boosting light source control fluctuation data generation circuit 9.

[0111] The output from the brightness boost 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 maintenance time fluctuation data generation circuit 5 determines and outputs the duration for which the multiple light sources 1 are lit or extinguished. The output from the lighting maintenance time fluctuation data generation circuit 5 is input to the light emission sequence fluctuation data generation circuit 7, the light emission quantity fluctuation data generation circuit 6, and the light source illumination intensity fluctuation data generation circuit 8. This updates the outputs from the light emission sequence fluctuation data generation circuit 7, the light emission quantity fluctuation data generation circuit 6, and the light source illumination intensity fluctuation data generation circuit 8.

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

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

[0115] The tree-gap dappled daylight light source control module 3 corrects the illuminance of each of the plurality of light sources 1 that changes 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 maximum absolute value data of the absolute value measurement data in the XYZ directions to the lighting maintenance time fluctuation data generation circuit 5 and the light source illuminance fluctuation data generation circuit 8.

[0116] Figure 13 It is a diagram showing an example of the occurrence frequency of lighting of a 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 generates the 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: Figure 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 dappled daylight light source control module 3 performs the following fluctuating control: Figure 5 With the position "0" shown as the center, the lighting order is more frequent from the positive side to +5 and more frequent from the negative side to -5, and the lighting state does not occur at the position "0". Thus, the tree-dappled sunlight simulation control device 100 can simulate fluctuations in which objects blocking sunlight frequently sway significantly and rarely become stationary.

[0119] Figure 14 It is a diagram showing an example of the occurrence frequency of lighting of a 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: Figure 14 As shown in FIG, the fluctuation is determined and the action is performed. Since the interference input becomes larger in the Z-axis direction, the tree gap mottled daylight light source control module 3 controls the fluctuation in the following manner: Figure 7 With "0" as the center, the number of lights or width of light changes more frequently from the positive side to +2, and more frequently from the negative side to -2. The number of lights or width of light does not change at "0." Thus, the tree-dappled sunlight simulation control device 100 can simulate fluctuations in which objects blocking sunlight frequently sway significantly and rarely become stationary.

[0121] Figure 15 This is a graph schematically showing the relationship between the time 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 the following data: Figure 9 The data output frequency shown is as follows: Figure 15 By controlling the frequency of data output to increase the frequency of the state in which the light-emitting state is maintained for a short time and reducing the frequency of the state in which the light-emitting state is maintained for a long time, it is possible to simulate a state in which the state in which the object blocking the sunlight (such as a branch or leaf) sways for a short period (i.e., a state of violent movement) is stabilized and the state in which the object blocking the sunlight sways for a long period (i.e., a state of slow movement) is less likely to occur.

[0123] Figure 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, Figure 11 The data output frequency shown is as follows: Figure 16 The data output frequency is determined as shown. The light source illumination fluctuation data, which updates the brightness based on the output timing of the lighting maintenance time fluctuation data generation circuit 5, is set so that the greater the absolute change from the brightness before the update to the next brightness after the update, the higher the occurrence frequency, while the smaller the absolute change, the lower the occurrence frequency. This can simulate a situation where, due to interference, the movement range of objects blocking sunlight (such as branches or leaves) increases and the movement cycle becomes faster, resulting in greater changes in the beam of sunlight leakage or illumination.

[0125] As described above, according to this embodiment, for example, when corrections are performed such as shortening the lighting time according to the input level (for example, the intensity 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 changes dramatically between trees when the wind becomes stronger.

[0126] Implementation method 5.

[0127] Figure 17 This is a block diagram schematically showing the configuration of a tree-dappled sunlight simulation control device 100 according to a fifth embodiment of the present disclosure.

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

[0129] The tree-dappled sunlight simulation control device 100 according to the fifth embodiment is different from the tree-dappled sunlight simulation control device 100 according to 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 includes, 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 generation circuit 7 outputs commands for controlling the lighting and extinguishing of the plurality of light sources 1 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 light-emitting lighting sequence fluctuation data generation circuit 7 is input to the light source illumination fluctuation data generation circuit 8 and the brightness-enhancing light source control fluctuation data generation circuit 9.

[0132] The output from the brightness boost 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 maintenance time fluctuation data generation circuit 5 determines and outputs the duration for which the multiple light sources 1 are lit or extinguished. The output from the lighting maintenance time fluctuation data generation circuit 5 is input to the light emission sequence fluctuation data generation circuit 7, the light emission quantity fluctuation data generation circuit 6, and the light source illumination intensity fluctuation data generation circuit 8. This updates the outputs from the light emission sequence fluctuation data generation circuit 7, the light emission quantity fluctuation data generation circuit 6, and the light source illumination intensity fluctuation data generation circuit 8.

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

[0135] The tree-dappled daylight source control module 3 outputs a command for adjusting the distance between the lens 2 and the multiple light sources 1 to the lens position driver 11. Specifically, the tree-dappled daylight source control module 3 controls the lens position driver 11. For example, the output from the light emission quantity fluctuation data generation circuit 6 is input to the lens position driver 11. Thus, the lens position driver 11 adjusts the distance between the lens 2 and the multiple light sources 1 based on the command from the tree-dappled daylight source control module 3.

[0136] In the light emission quantity fluctuation data generating circuit 6, the number of light sources emitting light that simulates 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 this embodiment, by utilizing the fluctuation data of the number of light emitted by light source 1 to control the distance A between light source 1 and lens 2, it is possible to simulate the change in the distance between light source 1 and an object that blocks light source 1, thereby simulating the blurred effect of dappled sunlight through tree gaps. In other words, without directly controlling the number of light emitted by light source 1, a simulated change in the light emission area can be obtained, rather than a digital change in the number of light emitted (i.e., the light emission area), thus achieving a more natural simulation of dappled sunlight through tree gaps.

[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 dappled daylight light source control module, 4. Light source driving circuit, 5. Lighting holding time fluctuation data generating circuit, 6. Lighting quantity fluctuation data generating circuit, 7. Lighting sequence fluctuation data generating circuit, 8. Light source illumination fluctuation data generating circuit, 9. Brightness boost light source control fluctuation data generating circuit, 10. Interference input module, 11. Lens position driving unit, 100. Tree gap dappled daylight simulation control device.

Claims

1. A tree gap dappled sunlight simulation control device, wherein: The tree gap dappled sunlight simulation control device comprises: Single lens; a plurality of light sources arranged parallel to a central axis of the lens 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 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 that F<A is satisfied.

2. The tree gap dappled sunlight simulation control device according to claim 1, wherein: When the upper limit of 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 light source control module has: 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 lighting 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 light 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 light emission lighting sequence fluctuation data, the light emission fluctuation data, and the fluctuation data using the measurement data measured by the interference input module.

6. The tree gap dappled sunlight simulation control device according to claim 4, wherein: The tree gap dappled sunlight light 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 claim 1 or 2, wherein: The tree-dappled sunlight simulation control device further includes a lens position driving unit that adjusts 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-dappled sunlight light source control module.

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