Smart lighting-based spatial coloring system and spatial coloring method using same

Abstract

In this smart lighting-based spatial coloring system and spatial coloring method using same, the spatial coloring system intentionally controls the color of an object displayed to the outside by intentionally providing light of which spectrum is controlled differently, and includes a light source unit and the object. The light source unit selectively provides a plurality of light beams each having a different spectrum. The object reflects the provided light beams and is displayed to the outside in different colors. In this case, light that is not reflected from the object is displayed as white light.

Description

Smart lighting-based space colorization system and space colorization method using the same

[0001] The present invention relates to a space colorization system and a space colorization method using the same, and more particularly, to a smart lighting-based space colorization system that independently controls the colors of a plurality of objects located in a space using smart lighting that controls a spectrum in various ways, and a space colorization method using the same.

[0002] Recently, in response to diverse consumer needs and technological advancements, technologies that allow products to actively change color are being developed.

[0003] For example, in the case of Korean Patent Publication No. 10-2022-0094196, a technology is disclosed for manufacturing a three-dimensional object including a light-transmitting substrate and an electrophoretic medium, and changing the color of the object.

[0004] In addition, Japanese Patent No. 6319922 discloses a product that changes color by stacking optical structures, and U.S. Patent Publication No. 2024-0151995 discloses a technology that changes the color of an object by changing the temperature, pressure, voltage, bending, viewing angle, etc. of the object.

[0005] As mentioned above, although technologies to actively change the color of a product in various ways are being developed, the products developed to date are only designed to change the characteristics of the product itself as a factor that designs the structure of the product itself or affects the product's display color.

[0006] Accordingly, complex design and manufacturing processes are required to produce products with variable colors, and there is a limitation in that it is difficult to vary the color of pre-manufactured products that do not have the above-mentioned structure.

[0007] Accordingly, the technical problem of the present invention is conceived from this point, and the purpose of the present invention is to provide a smart lighting-based space colorization system that can independently control the colors of multiple objects located in space by using smart lighting that diversely controls the spectrum of light provided to an object without using the structure or characteristics of the object.

[0008] In addition, another object of the present invention is to provide a spatial coloring method using the spatial coloring system.

[0009] In order to achieve the above-described object, a spatial colorization system according to one embodiment of the present invention intentionally provides light having different spectra to intentionally control the color of an externally displayed object, and includes a light source and an object. The light source selectively provides a plurality of lights, each having a different spectrum. The object reflects the provided lights and is externally displayed in different colors. In this case, light not reflected from the object is displayed as white light.

[0010] In one embodiment, each of the lights may be light composed of at least three monochromatic lights of different wavelengths.

[0011] In one embodiment, the wavelength of the monochromatic light may be at least one of the endpoints of a line extending in a color space, or at least one of the vertices of a polygon formed in a color space.

[0012] In one embodiment, if there are N objects and each of the lights is composed of (3*N) monochromatic lights, the colors displayed externally by the N objects can be independently controlled.

[0013] In one embodiment, each of the lights further comprises three monochromatic lights, so that light not reflected from the object can be controlled as white light.

[0014] In one embodiment, the light source unit includes a first light source unit that provides at least one light to the object, and a second light source unit that provides at least one light having a different spectrum from the light provided by the first light source unit to the object, and the first light source unit and the second light source unit may be different light sources.

[0015] In one embodiment, the method may further include a database storing information on a reflection spectrum of the object, and a control unit controlling selection of the light based on the database.

[0016] In one embodiment, the database may pre-store information that the color reflected from the object varies depending on the spectrum of light provided to the object.

[0017] In one embodiment, the control unit can select a specific light from among the lights of the light source unit based on the display color of the object according to the user's request.

[0018] In one embodiment, the object may include a base substrate and at least one structural layer laminated on the base substrate.

[0019] In one embodiment, the structural layers have different refractive indices and can control reflectivity depending on the spectrum of the light provided.

[0020] In one embodiment, the object may be located in a space where light other than light provided from the light source is blocked.

[0021] In one embodiment of a spatial colorization method for achieving another object of the present invention, a specific light is selected from among a plurality of lights, each having a different spectrum. The selected light is provided to an object. The object reflects the provided light, thereby displaying a specific color externally. Light not reflected from the object is displayed as white light.

[0022] In one embodiment, in the step of selecting the specific light, light may be selected to implement the display color of the object according to the user's request based on information about the reflection spectrum of the object that has been previously stored.

[0023] According to embodiments of the present invention, in an environment where the same white light is provided externally, the display color of an object can be varied in various ways depending on the provided light, thereby enabling active control of the color of the object and enabling the object to be viewed in various colors.

[0024] That is, by utilizing the so-called metamerism, in which there are countless visible light spectrums that can display the same white light, the environment other than the object maintains the same white light, and only the object can implement variable perception of various colors.

[0025] This allows for more easily implementing active color control of objects by controlling external light without altering the material, components, or characteristics of the object itself, thus allowing for a wider range of color variations. Furthermore, since color can be actively controlled even for previously manufactured objects based on information about the object's reflection spectrum, the range of applicable objects is not limited.

[0026] In this case, when selecting the light, monochromatic lights corresponding to at least one of the two endpoints of a line extending in the color space or at least one of the vertices of a polygon formed in the color space are selected, and by combining these, the light is composed, so that lights having various spectra can be selected, and the color displayed by the object can be actively controlled in a more diverse manner.

[0027] In addition to active color control for a single object, the color of each of a plurality of objects can be independently controlled by increasing the number of monochromatic lights contained in the light, thereby enabling independent color control for various objects located in a specific space.

[0028] In addition, since color control for one object or multiple objects is possible using multiple light sources, more diverse and complex color expression and control may be possible.

[0029] In particular, since display of a specific color requested by a user can be implemented by selectively providing light of a specific spectrum to the object in a state where information that the color reflected by the object varies with respect to a specific spectrum is stored in advance, control over the color of the object can be easily achieved.

[0030] At this time, in the case of a pre-manufactured object, color change according to the spectrum may be limited, so by manufacturing the object in a structure in which structural layers are laminated, more diverse and user-selectable colors can be implemented, thereby diversifying spatial colorization.

[0031] As described above, by intentionally providing light with differently controlled spectra, the color of an object displayed externally can be intentionally, i.e., the color of the object can be actively controlled.

[0032] FIG. 1 is a block diagram illustrating a spatial colorization system according to one embodiment of the present invention.

[0033] Figures 2a and 2b are schematic diagrams illustrating a state in which the same object is displayed in different colors using the spatial colorization system of Figure 1.

[0034] Figures 3a and 3b are schematic diagrams illustrating a state in which different objects are displayed in the same color or different colors using the spatial colorization system of Figure 1.

[0035] Fig. 4a is a graph illustrating the spectral characteristics of different lights in the spatial colorization system of Fig. 1, and Fig. 4b is a graph illustrating the color space of different lights in Fig. 3a and the colors displayed through the same.

[0036] FIG. 5 is a block diagram illustrating a spatial colorization system according to another embodiment of the present invention.

[0037] FIG. 6 is a cross-sectional view showing the structure of an object in a spatial colorization system according to another embodiment of the present invention.

[0038] FIG. 7 is a graph showing an example of controlling the color in which the object is displayed through different lights for the object in FIG. 6.

[0039] Fig. 8 is a flowchart illustrating a spatial coloring method using the spatial coloring system of Fig. 1.

[0040] <Explanation of symbols>

[0041] 10: Spatial Colorization System 100: Light Source

[0042] 101: First light source unit 102: Second light source unit

[0043] 110: 1st light 120: 2nd light

[0044] 130: 3rd light 140: 4th light

[0045] 200, 201, 202, 203: Object 300: Poet

[0046] 310: First color 320: Second color

[0047] 330: Third color 340: Fourth color

[0048] 400: White light 500: Database

[0049] 600: Control unit

[0050] The present invention is susceptible to various modifications and takes various forms, and thus embodiments are described in detail herein. However, this is not intended to limit the present invention to a specific disclosed form, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention. Similar reference numerals have been used to designate similar components throughout the description of each drawing. While terms such as "first," "second," etc. may be used to describe various components, these components should not be limited by these terms.

[0051] The above terms are used solely for the purpose of distinguishing one component from another. The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprises" or "consists of" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0052] Hereinafter, with reference to the attached drawings, a preferred embodiment of the present invention will be described in more detail.

[0053] FIG. 1 is a block diagram illustrating a spatial colorization system according to one embodiment of the present invention.

[0054] Referring to FIG. 1, the spatial colorization system (10) according to the present embodiment includes a light source unit (100), an object (200), a database (500), and a control unit (600).

[0055] The above light source unit (100) selectively provides a plurality of lights (110, 120, 130, ...) to the object (200), and it is sufficient if it includes a function for selecting the lights. That is, the light source unit (100) may be a commonly used indoor / outdoor light or indoor / outdoor lighting, and its specific form or light irradiation method is not limited.

[0056] The lights (110, 120, 130, ...) provided from the light source (100) are lights having different spectra, and the spectrum of the first light (110), the spectrum of the second light (120), and the spectrum of the third light (130) may be different from each other.

[0057] In this case, the concept that the spectra are different means that the first to third lights (110, 120, 130) are lights having the same wavelength but different intensities, or that the first to third lights (110, 120, 130) are lights having different wavelengths. Therefore, the description below that the spectra are lights having different intensities should be interpreted to include both meanings. However, if it is described as lights having different intensities or lights having different wavelengths, the meaning should be interpreted restrictively as lights having different intensities or different wavelengths.

[0058] In addition, although the drawing exemplifies selectively irradiating three different lights, the number of lights provided by the light source unit (100) is not limited.

[0059] By the light selected from the light source unit (100), the object (200) receives the selected light and reflects the selected light to display a specific color to the outside. That is, a specific light can be actively selected from the light source unit (100), and through this active light selection, the color reflected from the object (200) can also be actively selected and implemented.

[0060] At this time, in the case of light provided from the light source unit (100), light reflected by the object (200) displays a specific color to the outside, but light that is not provided to the object (200) but provided to the surrounding space is displayed as white light (400). This is common to all of the lights (110, 120, 130, ...) provided from the light source unit (100), and regardless of which light is actively selected and provided, light that is not provided to the object (200) but provided to the surrounding space is always perceived as white light (400) to the user.

[0061] Therefore, the user perceives a specific color only for the object (200) in the space recognized by the white light (400).

[0062] The optical characteristics related to this will be described in detail with reference to the drawings described below.

[0063] The above object (200) is located in a specific space, and the shape, arrangement, structure, etc. of the object (200) are not particularly limited. However, it is sufficient for the object (200) to be located in a position where it can receive light (110, 120, 130, ...) irradiated by the light source (100).

[0064] Meanwhile, in order to implement the spatial colorization system (10) in this embodiment, light other than the light (110, 120, 130, ...) provided by the light source (100) must be blocked from being provided to the object (200).

[0065] That is, the object (200) must be located indoors where light, such as sunlight, is blocked, or, if the object (200) is located outdoors, it must be in a nighttime environment where sunlight is extinguished. In addition, the object (200) may be located in an environment or space where light other than the light provided by the light source (100) is blocked.

[0066] In addition, the object (200) may be an object that has already been manufactured and used, and may be, for example, a sofa, bedding, a dining table, and other objects that are not limited to those already in use. That is, in the case of the spatial colorization system (10) according to the present embodiment, the spectrum of light provided to the object (200) is controlled differently, and the color of the object (200) is expressed differently, so that the characteristics of the light are actively controlled, rather than the characteristics of the object being controlled.

[0067] Thus, when a specific light (110, 120, 130) actively selected by the object (200) is provided, the object (200) reflects the provided light and is displayed in a specific color (310, 320, 330).

[0068] At this time, the first color (310) reflected and displayed from the object (200) as the first light (110) is provided may be different from the second color (320) according to the second light (120) and the third color (330) according to the third light (130). Through this, the object (200) displays different colors to the outside depending on the selected light.

[0069] Meanwhile, the recognition unit (300) that recognizes the first to third colors (310, 320, 330) may be, for example, the user's vision.

[0070] As described above, through the spatial colorization system (10) according to the present embodiment, by selecting lights having different spectra provided through the light source unit (100), the color of the light not reflected from the object (200) is always maintained as white light, while only the color reflected from the object (200) can be displayed differently. At this time, displaying the color reflected from the object (200) is ultimately implemented by selecting light from the light source unit (100), and in order to display the color reflected from the object (200) as a specific color, the light from the light source unit (100) can be actively selected by the user.

[0071] Meanwhile, the above-described spatial colorization system (10) can be controlled so that the viewing unit (300) displays the object (200) in a specific color through the database (500) and the control unit (600).

[0072] That is, the database (500) stores in advance information about the object (200), such as information about the spectrum of light reflected when light having a specific spectrum is incident, i.e., information about the reflection spectrum. Information about the reflection spectrum can be acquired and stored in advance by obtaining information about the spectrum of reflected light compared to the spectrum of various incident lights.

[0073] Accordingly, the control unit (600) controls the selection of the light according to a user's request to have the object (200) display a specific color based on information about the reflection spectrum of each object stored in the database (500). That is, if the user requests that the object (200) be displayed in a first color (310), the control unit (600) controls the first light (110) to be irradiated from the light source unit (100) so that the object (200) is displayed in the first color (310).

[0074] Thus, the control unit (600) can control the object (200) to be displayed in a required color according to the user's request by simply selecting light, so that the object (200) can be implemented in a specific color with great ease.

[0075] Figures 2a and 2b are schematic diagrams illustrating a state in which the same object is displayed in different colors using the spatial colorization system of Figure 1.

[0076] Referring to FIG. 2a, when the light source (100) provides the first light (110) to an object (200, for example, a sofa) located in an indoor space (50), the color reflected from the object (200) and displayed on the viewing portion (300) becomes the first color (310).

[0077] At this time, the color of the object (200) is the first color (310), but in the area where the first light (110) reaches, excluding the object (200) in the indoor space (50), it is displayed as white light (400) different from the first color (310).

[0078] Accordingly, the above-mentioned recognition unit (300) recognizes the first color (310) for the object (200) and recognizes white light (400) in other spaces.

[0079] At this time, referring to FIG. 2b, for the same object (200) located in the same indoor space (50), if the light source (100) provides second light (120) having a different spectrum from the first light (110), the color reflected from the object (200) and displayed by the viewing portion (300) becomes the second color (320).

[0080] Here, the second color (320) is different from the first color (310), and the color of the object (200) is the second color (320), but in the area where the second light (120) reaches, excluding the object (200) in the indoor space (50), it is displayed as white light (400) different from the second color (320).

[0081] As described above, even if light (110, 120) recognized as the same white light (400) is provided to the object (200), the colors of the light reflected from the object (200) are different colors (310, 320), and the color of the object (200) can be varied differently by actively selecting the provided light.

[0082] Meanwhile, the first and second lights (110, 120) in FIGS. 2A and 2B may be lights having substantially different spectra, but having the same wavelength and different light intensities. Thus, by selectively providing lights having different light intensities to the same object (200), the color can be varied.

[0083] Figures 3a and 3b are schematic diagrams illustrating a state in which different objects are displayed in the same color or different colors using the spatial colorization system of Figure 1.

[0084] Meanwhile, referring to FIG. 3a, when the light source unit (100) simultaneously provides the first light (110) to each of the first and second objects (200, 201) located in the indoor space (50), the colors reflected through the first and second objects (200, 201) and displayed on the viewing unit (300) can all be the first color (310).

[0085] At this time, the colors of the first and second objects (200, 201) are both the first color (310), but in the area where the first light (110) reaches, excluding the first and second objects (200, 201) in the indoor space (50), it is displayed as white light (400) different from the first color (310).

[0086] Accordingly, the above-mentioned recognition unit (300) recognizes the first color (310) for the objects (200, 201), and recognizes white light (400) in other spaces.

[0087] In contrast, referring to FIG. 3b, when the third light (130) is simultaneously provided from the light source (100) to each of the different first and second objects (200, 201), the color reflected through the first object (200) and displayed on the viewing portion (300) is maintained as the first color (310), but the color reflected through the second object (201) and displayed on the viewing portion (300) can be changed to the third color (330).

[0088] That is, by changing the first light (110) to the third light (130), it is possible to control only the display color of the second object (201) to be varied. Through this, by selecting light from the light source unit (100), it is possible to control only the color of a specific object among a plurality of objects to be varied while maintaining the colors of other objects the same.

[0089] This can be implemented by actively selecting the spectrum of incident light based on the reflection spectra of the above objects.

[0090] Meanwhile, the first and third lights (110, 130) in FIGS. 3A and 3B may be lights with substantially different spectra and different wavelengths. Thus, for different objects (200, 201), it is possible to control the color of only a specific object to be varied while maintaining the color of other objects the same.

[0091] Furthermore, although not exemplified, it may be possible to control changing the color of the first object (200) to the second color (320) and the color of the second object (201) to the third color (330) by changing the first light (110) to the third light (130). Through this, by actively selecting light from the light source unit (100), control can be performed so that each of the plurality of objects changes to a different color.

[0092] Furthermore, even when the colors of the first and second objects (200, 201) are maintained or changed as described above, the area where the third light (130) reaches, excluding the first and second objects (200, 201) in the indoor space (50), is always displayed as white light (400).

[0093] Below, we explain the principle that, as the spectrum of incident light changes, the surrounding environment appears as white light, but only specific objects change to different colors.

[0094] Fig. 4a is a graph illustrating the spectral characteristics of different lights in the spatial colorization system of Fig. 1, and Fig. 4b is a graph illustrating the color space of different lights in Fig. 3a and the colors displayed through the same.

[0095] In general, a specific light can be implemented by combining three different monochromatic lights as in Fig. 4a, and light of a specific color can be displayed by controlling the intensity of the wavelength of the monochromatic lights.

[0096] At this time, light has countless visible light spectrums that display the same color, a property called metamerism. Therefore, even when displaying the same white light, the spectrum it contains can be composed differently, and this metamerism allows the color of the object to be varied differently.

[0097] For example, if the first light (110) is implemented as three monochromatic lights (111, 112, 113) having different wavelength spectra, as shown in FIG. 4a, the first light (110) can be implemented as white light (400) by controlling the intensity of the wavelength (base wavelength) of the monochromatic lights.

[0098] Likewise, even when the second light (120) is implemented as three monochromatic lights (121, 122, 123) having different wavelength spectra, the second light (120) can be implemented as white light (400) by controlling the intensity of the wavelength (base wavelength) of the monochromatic lights.

[0099] That is, as in FIG. 4b, the color of the light displayed by the first light (110) as well as the color of the light displayed by the second light (120) can display white light with the same color as the D65 standard light source color. At this time, the wavelength of each of the monochromatic lights (111, 112, 113) constituting the first light (110) may be a wavelength corresponding to the three vertices of a triangle formed as an expression area on the color space of the first light (110) in FIG. 4b, and the wavelength of each of the monochromatic lights (121, 122, 123) constituting the second light (120) may be a wavelength corresponding to the three vertices of a triangle formed as an expression area on the color space of the second light (120) in FIG. 4b.

[0100] Ultimately, if the first light (110) is composed of a combination of three monochromatic lights (111, 112, 113), and the three monochromatic lights (111, 112, 113) have wavelengths corresponding to the three vertices of a triangle in the color space, which is the expression area expressed by the first light (110), the first light (110) is displayed as white light identical to the D65 standard light source color. The same applies to the second light (120).

[0101] As described above, when three monochromatic lights are selected so that the first light (110) is displayed as white light (i.e., a base wavelength for displaying white light is selected), the first light (120) is configured to additionally select three monochromatic lights, thereby enabling the object (200) to be expressed in a specific color. At this time, even if three monochromatic lights are added, since three monochromatic lights are already selected so as to be displayed as white light, the color displayed externally is maintained as white light.

[0102] That is, in order to configure the first light (110) for displaying the object (200) with the first color (310), in addition to the three monochromatic lights for displaying white light, three more monochromatic lights having specific wavelengths can be additionally selected to configure the first light (110). Through this, as the first light (110) is used as lighting, the surrounding environment excluding the object (200) is displayed as white light, and the color displayed by being reflected by the object (200) can be implemented through a combination of the additionally selected monochromatic lights.

[0103] This is also the same for the second light (120). That is, in addition to the three monochromatic lights for displaying white light, the second light (120) additionally selects three monochromatic lights having specific wavelengths (at this time, they must be a different combination from the monochromatic lights additionally selected from the first light (110), so that the surrounding environment excluding the object (200) is displayed as white light, and the color displayed by being reflected by the object (200) can be displayed as the second color (320).

[0104] As such, in order to display an object in a specific color, three wavelengths (monochromatic lights) must be selected to display white light as the base wavelength, and additionally, three wavelengths (monochromatic lights) must be selected to display the object in a specific color, ultimately resulting in 3+3 wavelengths being selected.

[0105] Therefore, for N objects, in order to independently control the colors of each of the N objects, 3N wavelengths can be selected to configure the light. In other words, when the lighting is not configured as white light, but rather to simply control the independent colors of N objects, the light can be configured by selecting the wavelengths as described above.

[0106] In contrast, for the N objects, in order to independently control the color displayed externally other than the objects, i.e. the color of the lighting, three additional wavelengths must be selected, and thus the light can be configured by selecting (3N+3) wavelengths. This is because, in a state where three monochromatic lights are additionally selected to configure the lighting as white light, 3N wavelengths must be selected to independently control the color of each of the N objects.

[0107] Meanwhile, the first light (110) or the second light (120) does not necessarily have to be composed of monochromatic lights having wavelengths corresponding to the three vertices of a triangle in the color space of FIG. 4b. That is, the monochromatic lights constituting the first light (110) or the second light (120) may be composed of monochromatic lights corresponding to at least one of the vertices of a polygon, such as a square or a pentagon, in the color space. Furthermore, the monochromatic lights constituting the first light (110) or the second light (120) may also be composed of monochromatic lights corresponding to either of the two endpoints of a line extending in a straight line in the color space.

[0108] This is because, when composing light based on RGB pixels, various colors can be expressed by combining three or more monochromatic lights, but even if light is composed of two monochromatic lights, colors can be expressed within a limited range, that is, within a set range. In this case, since the range of color expression when light is composed of the two monochromatic lights may vary depending on each object, the range of color expression for each object must be stored in advance in a database.

[0109] As described above, if light can be composed of two monochromatic lights to express colors within a limited range, then, as described above, for N objects, 2N wavelengths can be selected to independently control the colors of each of the N objects, and the light can be composed.

[0110] In contrast, for the N objects, in order to independently control the color displayed externally other than the objects, i.e. the color of the light, three additional wavelengths must be selected, and thus the light can be configured by selecting (2N+3) wavelengths. Of course, if the color of the light can be controlled as white light with two wavelengths, it can also be configured by selecting (2N+2) wavelengths.

[0111] FIG. 5 is a block diagram illustrating a spatial colorization system according to another embodiment of the present invention.

[0112] The spatial colorization system (11) according to the present embodiment is substantially the same as the spatial colorization system (10) described with reference to FIG. 1 except that the light source unit (100) is composed of multiple parts, and therefore the same reference numbers are used for the same components and redundant descriptions are omitted.

[0113] Referring to FIG. 5, in the spatial colorization system (11) according to the present embodiment, the light source unit (100) includes first and second light source units (101, 102) that are distinct from each other.

[0114] At this time, the first light source unit (101) selectively provides at least one light (110, 120), and the second light source unit (102) also selectively provides at least one light (130, 140).

[0115] That is, unlike selectively providing one light among a plurality of lights through a single light source, lights having different spectra can be selectively provided from each of the two independent lights (101, 102). In this case, when the first light source (101) provides the first light (110) to the object (202) and the second light source (102) provides the third light (130) to the object (202), the color reflected from the object (202) can be determined based on the characteristics of the spectrum according to the combination of the first and third lights (110, 130).

[0116] Furthermore, the color reflected from such an object (202) is controlled based on the characteristics of the spectrum of incident light by the combination of lights provided from the first and second light sources (101, 102), and information on the color of reflected light according to such incident light is stored in the database (500) described above, so that light can be selected by the control unit (600).

[0117] At this time, the light source unit (100) includes two different light source units (101, 102) as an example only, and the number of light source units may be configured in various ways, such as three or more.

[0118] Meanwhile, unlike when multiple lights are provided to a single object, multiple lights may be individually provided to multiple objects (202) located in space.

[0119] That is, the first light source unit (101) may provide the first light (110) to the first object, and the second light source unit (102) may provide the third light (130) to the second object. Thus, the colors of the first and second objects may be variably controlled while being displayed independently from each other, which may enable easier color control than variably controlling the colors of different objects through a single light as exemplified in FIG. 3b above.

[0120] FIG. 6 is a cross-sectional view showing the structure of an object in a spatial colorization system according to another embodiment of the present invention.

[0121] As described with reference to the above-described Figure 1, in the case of the spatial colorization system (10), the color of the object (200) can be variably controlled based on the reflection spectrum information of the previously manufactured object (200).

[0122] However, in the case of a pre-manufactured object (200), due to its reflection characteristics, it may not have a variety of reflection spectra, and thus there may be a limitation in that various colors cannot be displayed in a variable manner according to changes in the spectrum of incident light.

[0123] Accordingly, as in the present embodiment, the object (203) can be manufactured to have a wide reflection spectrum or a specific reflection spectrum, thereby implementing a system in which various colors can be displayed in a variable manner according to changes in the spectrum of incident light.

[0124] That is, referring to FIG. 6, the object (203) is formed with a structure in which a plurality of structural layers (220, 230, 240, 250) are laminated on a base substrate (210), so that the spectrum of reflected light reflected from the object (203) can be controlled in various ways.

[0125] At this time, by designing the number of stacked structural layers (220, 230, 240, 250), the material, the refractive index of each structural layer, the thickness of each structural layer, etc. to be varied, when light of a specific spectrum is incident, the reflection spectrum reflected in response to it can be varied.

[0126] Furthermore, when light of various spectra is incident, the structural layers can be configured so that the reflection spectrum can also be varied. Thus, as the light source unit (100) selects light in various ways, the color of the light displayed by the object (203) can also be varied, thereby enabling more effective spatial colorization.

[0127] At this time, the structural layers are exemplified as multiple layers stacked on top of each other, but are not limited thereto, and it is also possible for one structural layer to be formed.

[0128] Furthermore, the above structure layer may include a simple nano-thin film layer, a layer in which homogeneous or heterogeneous nanoparticles are dispersed, a layer having a metasurface, etc.

[0129] FIG. 7 is a graph showing an example of controlling the color in which the object is displayed through different lights for the object in FIG. 6.

[0130] Referring to FIG. 7, the object (203) can be manufactured by designing the number of stacked structural layers (220, 230, 240, 250), material, refractive index, thickness, etc., so that the object (203) is displayed in the same red color for both the first light (110) and the second light (120).

[0131] Alternatively, the number of layers, materials, refractive indices, thicknesses, etc. of the structural layers (220, 230, 240, 250) may be designed differently so that the object (203) is displayed in red for the first light (110) and in green for the second light (120).

[0132] Furthermore, the number of layers, materials, refractive indices, thicknesses, etc. of the structural layers (220, 230, 240, 250) may be designed differently so that the object (203) is displayed in red for the first light (110) and in blue for the second light (120).

[0133] At this time, the first and second lights (110, 120) are configured by combining monochromatic lights as in FIGS. 4a and 4b, and the light provided to other areas except for the object (203) is expressed as white light.

[0134] Fig. 8 is a flowchart illustrating a spatial coloring method using the spatial coloring system of Fig. 1.

[0135] Referring to FIG. 8, in the spatial colorization method using the spatial colorization system (10) described with reference to FIG. 1, first, information on the reflection spectrum of the object (200) is stored in the database (500) (step S10).

[0136] After this, it is determined based on the information stored in the database (500) whether the color of the object (200) can be implemented according to the user's request (step S20), and if the color implementation is possible, light for implementing the color according to the user's request is selected (step S30).

[0137] That is, the control unit (600) controls the light source unit (100) so that the light source unit (100) can provide light to implement a color according to the user's request. This control of the light source unit (100) corresponds to so-called active color control for implementing a color according to the user's request.

[0138] Thus, the light source unit (100) provides the selected specific light to the object (200) (step S40), and the object (200) is displayed externally in a specific color, i.e., a color requested by the user, through the reflected light according to the provision of the specific light (step S50).

[0139] At this time, since the light provided to the area other than the object (200) displays white light (400), the recognition unit (300) recognizes that only the object (200) is displayed in a specific color requested while recognizing the surrounding light as white light.

[0140] After this, based on whether the user's (i.e., the poet's) request has changed (step S60), if there is no separate request, the colorization is terminated, and if there is a separate request, it is determined whether the color implementation according to the request is possible (step S20).

[0141] Thus, as explained above, by selecting another light, it is recognized that the object (200) is displayed in a different color.

[0142] Meanwhile, the above description explains the spatial colorization method using the spatial colorization system (10) of FIG. 1, but in the spatial colorization method using the spatial colorization system (10) of FIG. 5, when selecting the light (step S30), it can be replaced by selectively selecting a specific light from the first light source unit (101) or the second light source unit (102), or selecting the light through a combination of specific lights.

[0143] According to the embodiments of the present invention as described above, in an environment where the same white light is provided externally, the display color of an object can be varied in various ways depending on the provided light, so that active control of the color of the object is possible, and the object can be viewed in various colors.

[0144] That is, by utilizing the so-called metamerism, in which there are countless visible light spectrums that can display the same white light, the environment other than the object maintains the same white light, and only the object can implement variable perception of various colors.

[0145] This allows for more easily implementing active color control of objects by controlling external light without altering the material, components, or characteristics of the object itself, thus allowing for a wider range of color variations. Furthermore, since color can be actively controlled even for previously manufactured objects based on information about the object's reflection spectrum, the range of applicable objects is not limited.

[0146] In this case, when selecting the light, the monochromatic lights corresponding to the three vertices of a triangle selected to include white light inside the color space are selected, and by combining them to form the light, lights having various spectra can be selected, so that the color displayed by the object can be actively controlled in a more diverse manner.

[0147] In addition to active color control for a single object, the color of each of a plurality of objects can be independently controlled by increasing the number of monochromatic lights contained in the light, thereby enabling independent color control for various objects located in a specific space.

[0148] In addition, since color control for one object or multiple objects is possible using multiple light sources, more diverse and complex color expression and control may be possible.

[0149] In particular, since display of a specific color requested by a user can be implemented by selectively providing light of a specific spectrum to the object in a state where information that the color reflected by the object varies with respect to a specific spectrum is stored in advance, control over the color of the object can be easily achieved.

[0150] At this time, in the case of a pre-manufactured object, color change according to the spectrum may be limited, so by manufacturing the object in a structure in which structural layers are laminated, more diverse and user-selectable colors can be implemented, thereby diversifying spatial colorization.

[0151] As described above, by intentionally providing light with differently controlled spectra, the color of an object displayed externally can be intentionally, i.e., the color of the object can be actively controlled.

[0152] Although the present invention has been described above with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various modifications and changes may be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below.

Claims

1. In a spatial colorization system that intentionally controls the color of an object displayed externally by intentionally providing light with differently controlled spectra, A light source unit that selectively provides a plurality of lights, each having a different spectrum; and Including an object that reflects the above provided lights and appears externally in different colors, A spatial colorization system characterized in that light not reflected from the object is displayed as white light.

2. In paragraph 1, each of the lights, A spatial colorization system characterized in that the light is composed of at least two monochromatic lights of different wavelengths.

3. In the second paragraph, the wavelength of the monochromatic light is A spatial colorization system characterized by at least one of the endpoints of a line extending in a color space.

4. In the second paragraph, the wavelength of the monochromatic light is A spatial colorization system characterized by at least one of the vertices of a polygon formed in a color space.

5. In paragraph 2, If there are N objects above, and each of the lights is composed of (3*N) monochromatic lights, A spatial colorization system characterized in that the colors displayed externally of the N objects are independently controlled.

6. In paragraph 5, A spatial colorization system characterized in that each of the above lights further includes three monochromatic lights, thereby controlling light not reflected from the object into white light.

7. In paragraph 2, If there are N objects above, and each of the lights is composed of (2*N) monochromatic lights, A public colorization system characterized in that the colors of the N objects displayed externally are independently controlled within a preset range.

8. In the first paragraph, the light source unit, a first light source unit providing at least one light to the object; and A second light source unit is included that provides at least one light having a different spectrum from the light provided by the first light source unit to the object, A spatial colorization system, characterized in that the first light source unit and the second light source unit are different light sources.

9. In paragraph 1, A database storing information about the reflection spectrum of the object; and A spatial colorization system further comprising a control unit that controls the selection of the light based on the above database.

10. In paragraph 9, the database, A spatial colorization system characterized in that information is stored in advance that the color reflected from the object varies according to the spectrum of light provided to the object.

11. In the 10th paragraph, the control unit, A spatial colorization system characterized in that a specific light is selected from among the lights of the light source unit based on the display color of the object according to the user's request.

12. In paragraph 1, the object, A spatial colorization system comprising a base substrate and at least one structural layer laminated on the base substrate.

13. In the 12th paragraph, the structural layers are A spatial colorization system characterized by having different refractive indices and controlling reflectivity according to the spectrum of the light provided.

14. In paragraph 1, the object, A spatial colorization system characterized in that it is located in a space where light other than the light provided from the above light source unit is blocked.

15. In a spatial colorization system that intentionally controls the color of an object displayed externally by intentionally providing light with differently controlled spectra, A step in which a specific light is selected from among a plurality of lights each having a different spectrum; a step of providing the selected light to an object; and The above object includes a step of reflecting the light provided so that a specific color is displayed externally, A spatial colorization method characterized in that light not reflected from the above object is displayed as white light.

16. In the step 15, in which the specific light is selected, Based on the information about the reflection spectrum of the previously stored object, A spatial colorization method characterized in that light is selected to implement the display color of the object according to the user's request.

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