Multi-color light mixing method, apparatus and system for light-emitting device

Abstract

A multi-color light mixing method, apparatus and system for a light-emitting device, which are applied to the technical field of lighting. For an LED light-emitting device comprising a plurality of physical lamp beads, the physical lamp beads mix light to form at least one virtual lamp bead, and the plurality of physical lamp beads include at least three colored lamp beads of different colors and at least one white-light lamp bead. The method comprises: acquiring target color coordinates in a dimming process; determining a target triangle where the target color coordinates are located; on the basis of the target color coordinates and color coordinates of target lamp beads at the three vertices of the target triangle, determining a light-mixing weight proportion of each target lamp bead with respect to the target color coordinates, wherein the target lamp beads include at least one target physical lamp bead and at least one target virtual lamp bead; and on the basis of a target light-mixing coefficient ratio and the light-mixing weight proportion, determining a light mixing proportion of each physical lamp bead with respect to the target color coordinates, so as to control each physical lamp bead to emit light.

Description

Multicolor mixing method, apparatus and system for light-emitting devices

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese patent application No. 202510397805.2, filed on March 28, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of LED technology, and in particular to a method, apparatus and system for multicolor mixing of light-emitting devices. Background Technology

[0004] In dimming and color-changing lighting fixtures, red, green and blue light sources can be mixed to produce effects ranging from white light to various colored light. However, the color rendering index (CRI) of the white light output by this method is very poor, so it is necessary to add a white light source to improve it. Summary of the Invention

[0005] This disclosure is defined by the appended independent claims, and the relevant improvements are set forth in the dependent claims.

[0006] The present disclosure aims to provide a multi-color light mixing method for a light-emitting device, applied to an LED light-emitting device comprising a plurality of physical LED beads, wherein the light from each of the physical LED beads is mixed to form at least one virtual LED bead, and the plurality of physical LED beads includes at least three colored LED beads of different colors and at least one white LED bead, the method comprising:

[0007] Obtain the target color coordinates;

[0008] Determine the target triangle where the target color coordinates are located; wherein, at least three of the colored LED beads and at least one of the virtual LED beads divide the area enclosed by the color coordinates of the at least three colored LED beads into multiple triangles;

[0009] Based on the target color coordinates and the color coordinates of the target LEDs located at the three vertices of the target triangle, the mixing weight ratio of each target LED with respect to the target color coordinates is determined; each target LED includes at least one target physical LED and at least one target virtual LED.

[0010] The mixing ratio of each physical LED bead for the target color coordinate is determined according to the target mixing coefficient ratio and the mixing weight ratio, and each physical LED bead is controlled to emit light based on the mixing ratio, wherein each physical LED bead has a target mixing coefficient ratio corresponding to the target virtual LED bead formed by mixing light.

[0011] Another object of this disclosure is to provide a multicolor mixing device for a light-emitting device, applied to an LED light-emitting device comprising a plurality of physical LED beads, wherein each of the physical LED beads is mixed to form at least one virtual LED bead, and the plurality of physical LED beads includes at least three colored LED beads of different colors and at least one white LED bead, the device comprising:

[0012] The acquisition module is used to obtain the target color coordinates;

[0013] The first determining module is used to determine the target triangle where the target color coordinates are located; wherein, at least three of the colored LED beads and at least one of the virtual LED beads divide the area enclosed by the color coordinates of the at least three colored LED beads into multiple triangles;

[0014] The second determining module is used to determine the mixing weight ratio of each target LED relative to the target color coordinates based on the target color coordinates and the color coordinates of the target LEDs located at the three vertices of the target triangle; each target LED includes at least one target physical LED and at least one target virtual LED.

[0015] The third determining module is used to determine the mixing ratio of each physical LED bead relative to the target color coordinates based on the target mixing coefficient ratio and the mixing weight ratio, so that the mixing ratio controls each physical LED bead to emit light, wherein each physical LED bead has a target mixing coefficient ratio corresponding to the target virtual LED bead formed by mixing light.

[0016] Another object of this disclosure is to provide a multicolor mixing system for a light-emitting device, applied to a luminaire comprising a plurality of physical LEDs and at least one virtual LED formed by mixing the light from the physical LEDs, wherein the plurality of physical LEDs include at least three colored LEDs of different colors and at least one white LED, and the system includes a memory and a processor, wherein:

[0017] The memory is used to store computer programs;

[0018] The processor is used to implement the steps of the multicolor mixing method of the light-emitting device as described above when executing the computer program.

[0019] This summary is provided to introduce, in a simplified form, a selection of inventive concepts that will be further described in the detailed embodiments described below. This summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to help determine the scope of the claimed subject matter. The term "subject matter" can refer to the foregoing as well as components, structures, processes, methods, and / or operations described throughout this document. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the relevant technologies and the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 is a schematic flowchart of a multicolor mixing method for a light-emitting device provided in an embodiment of this disclosure;

[0022] Figure 2 is a schematic diagram of the color coordinates of a physical LED bead and a virtual LED bead provided in an embodiment of this disclosure;

[0023] Figure 3 is a schematic diagram of the color coordinates of another physical LED bead and a virtual LED bead provided in an embodiment of this disclosure;

[0024] Figure 4 is a schematic diagram of a method for calculating the light mixing weight ratio provided in an embodiment of this disclosure;

[0025] Figure 5 is a schematic diagram of the structure of a multicolor mixing device for a light-emitting device provided in an embodiment of this disclosure.

[0026] It should be clearly pointed out that the accompanying drawings are only for illustrating the technical solution of this disclosure. The specific positions, directions, orientations, and sizes shown in the drawings are only for reference to aid in understanding this disclosure and are not intended to precisely limit the corresponding elements in the actual application or implementation of this disclosure. In practical applications, the positions, directions, orientations, and sizes of the elements can be reasonably adjusted and changed according to specific needs and actual conditions. Embodiments of the present invention

[0027] This disclosure provides a multi-color mixing method, apparatus, and system for a light-emitting device. During use, it can fully utilize the rated power of each physical LED, improve the color rendering index, and achieve a smooth transition from white light to colored light, thereby enhancing the user experience.

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0029] In related technologies, red, green, and blue light sources can be mixed in dimming and color-tuning lamps to produce effects ranging from white light to various colored lights. However, the color rendering index (CRI) of the white light output by this method is very poor, so it is necessary to add a white light source for improvement. In order to have a good CRI at different color temperatures, two white light sources with different color temperatures are usually used to form a five-color light source lamp.

[0030] The mixing method for five-color light sources involves using a white light source when white light is needed, while the colored light sources remain silent; conversely, when colored light is needed, red, green, and blue light sources are mixed, with the white light source remaining silent. This method merely mechanically blends two types of lights together. Because only some LED chips operate, there is a loss in the rated power of the LED chips, and the color rendering index is determined solely by the white light source, making it difficult to achieve optimal results. Furthermore, the transition from white light to colored light is mechanical and lacks a smooth flow.

[0031] Therefore, how to improve the color rendering index and achieve a smooth transition from white light to colored light has become a technical problem that needs to be solved by those skilled in the art.

[0032] One objective of this disclosure is to provide a multi-color mixing method, apparatus, and system for a light-emitting device, which can fully utilize the rated power of each physical LED during use, improve the color rendering index, and achieve a smooth transition from white light to colored light, thereby enhancing the user experience.

[0033] Please refer to Figure 1, which is a schematic flowchart illustrating a multi-color mixing method for a light-emitting device according to an embodiment of this disclosure. This multi-color mixing method is applied to an LED light-emitting device comprising multiple physical LED beads. The physical LED beads are mixed to form at least one virtual LED bead. The multiple physical LED beads include at least three colored LED beads of different colors and at least one white LED bead. The LED light-emitting device can be an LED lamp or an LED display screen; the following description uses a lamp as an example.

[0034] In other words, the lamp in this embodiment contains at least three different colored LEDs, such as red, blue, and green LEDs, or other colors. It also contains at least one white LED. In the CIE1931 (color space) coordinate diagram, the color coordinates of each colored LED form a first polygonal region (or a triangular region if there are only three colored LEDs). For example, as shown in Figure 2, the lamp contains six colored LEDs and two white LEDs. Each LED forms two virtual LEDs through light mixing. These virtual LEDs can be either white or colored. The color coordinates of the six colored LEDs form a polygonal region, and the two virtual LEDs are located inside this polygonal region. The colored LEDs and the two virtual LEDs divide this polygonal region into multiple triangles. As shown in Figure 3, the lamp includes red LED R, green LED G, blue LED G, white LED W2 and white LED W6. Red LED R, green LED G, and blue LED G form a triangle RGB. Virtual LED W8 and virtual LED W3, along with the colored LED RGB, divide the lamp into multiple triangles.

[0035] For a luminaire comprising multiple physical LEDs and at least one virtual LED formed by mixing the light from the physical LEDs, embodiments of this disclosure provide a multicolor mixing method for a light-emitting device, the method comprising:

[0036] S110: Obtain the target color coordinates;

[0037] It should be noted that during the dimming process of the lamp, the target color coordinates can be obtained according to the current dimming command. The current dimming command can include one of the following commands: color temperature adjustment command, brightness adjustment command, saturation adjustment command, and hue adjustment command. Of course, it can also be other dimming commands, as long as the target color coordinates can be determined according to the command.

[0038] In practical applications, users can adjust the light mixing of the lamps through the dimming knob or an electronic device that has established a communication connection with the lamps. The lamps generate dimming commands based on the position information of the dimming knob or based on the adjustment information sent by the electronic device.

[0039] S120: Determine the target triangle where the target color coordinates are located; wherein, the color coordinates of at least three colored LED beads and the color coordinates of at least one virtual LED bead divide the area enclosed by the color coordinates of at least three colored LED beads into multiple triangles;

[0040] It is understandable that the color coordinates of each colored LED bead form a polygonal region. The color coordinates of each colored LED bead and at least one virtual LED bead can divide this polygonal region into multiple triangles, as shown in Figure 3. For example, each physical LED bead includes: red LED bead R, green LED bead G, blue LED bead G, white LED bead W2, and white LED bead W6, and their respective color coordinates are: R (0.705, 0.2948), G (0.2084, 0.7154), B (0.1289, 0.0735), W2 (0.4599, 0.4104), and W6 (0.3125, 0.3316). Since the commonly used color temperature is between 3000K and 8500K, the color coordinates of two virtual LEDs can be preset. The color coordinates of virtual LED W3 are (0.4234, 0.399), and the color coordinates of virtual LED W8 are (0.2937, 0.309). That is, both of these virtual LEDs are white LEDs (in practical applications, they can also be colored virtual LEDs). Please refer to Table 1 for the color coordinates of each physical LED and virtual LED. The triangles in Figure 3 are five small triangles: RGW3, GW8W3, GBW8, W8BR, and W3W8R. Based on the target color coordinates and the color coordinates corresponding to the vertices of each triangle, the target triangle containing the target color coordinates can be determined. For example, the target triangle containing the target color coordinates C1 (0.3125, 0.3316) is GW8W3.

[0041] Table 1 Color Coordinates of Solid LED Beads

[0042]

[0043] S130: Based on the target color coordinates and the color coordinates of the target LEDs located at the three vertices of the target triangle, determine the mixing weight ratio of each target LED relative to the target color coordinates; each target LED includes at least one target physical LED and at least one target virtual LED.

[0044] It should be noted that after determining the target triangle where the target color coordinates are located, each target LED can be determined based on the LEDs at each vertex of the target triangle, that is, at least one target physical LED and at least one target virtual LED can be determined. Then, based on the color coordinates of the target physical LED and the target virtual LED, combined with the target color coordinates, the mixing weight ratio of each target physical LED and the target virtual LED relative to the target color coordinates can be further determined.

[0045] Specifically, the output light energy ratio of each target LED can be determined based on the target color coordinates and the color coordinates of each target LED located at the three vertices of the target triangle; and the output light energy ratio of each target LED can be determined as the mixing weight ratio of each target LED relative to the target color coordinates.

[0046] It is understandable that, given the target color coordinates and the color coordinates of each target LED (first target LED, second target LED, and third target LED), the mixing weight ratio of each target physical LED and target virtual LED relative to the target color coordinates can be determined based on the geometric relationship of the triangle. In this embodiment, the target triangle containing the target color coordinates C1 (0.3125, 0.3316) is GW8W3, as shown in Figure 4. The extension of the line connecting the target color coordinates C1 to one target LED G intersects the lines connecting the other two target LEDs at point N, and the extension of the line connecting C1 to one target LED W3 intersects the lines connecting the other two target LEDs at point P. The extension of the line connecting C1 and one target LED W8 intersects the lines connecting the other two target LEDs at point M. Therefore, the color coordinates of point N, point M, and point P can be obtained from the color coordinates of C1, G, W3, and W8. Since the distances of point N from W3 and W8 are inversely proportional to the output light energy of W3 and W8, the ratio of the output light energy of W3 to that of W8 is L2:L1. Similarly, the ratio of the output light energy of W3 to that of G is L3:L4, and the ratio of the output light energy of G to that of W8 is L6:L5. From the above description, the color coordinates of point N, point M, and point P can be obtained. Therefore, by combining the color coordinates of G, W3, and W8, the values ​​of L1, L2, L3, L4, L5, and L6 can be obtained, thus obtaining the output light energy ratio of the three target LEDs G, W3, and W8. This output energy ratio is the mixing weight ratio of G, W3, and W8.

[0047] S140: Based on the target mixing coefficient ratio and the mixing weight ratio, determine the mixing ratio of each physical LED for the target color coordinate, so as to control each physical LED to emit light based on the mixing ratio, wherein each physical LED has a target mixing coefficient ratio corresponding to the target virtual LED formed by mixing light.

[0048] It should be noted that since each virtual LED is formed by mixing light from individual physical LEDs at the virtual LED location, the mixing coefficient ratio of each physical LED corresponding to the virtual LED can be determined in advance based on the color coordinates of the virtual LED and the color coordinates of each physical LED. That is, for virtual LED 1, when the physical LEDs mix light according to a certain mixing coefficient ratio, virtual LED 1 will be formed. For virtual LED 2, when the physical LEDs mix light according to a certain mixing coefficient ratio, virtual LED 2 will be formed. Therefore, the mixing coefficient ratio of each physical LED corresponding to the target virtual LED can be determined based on the target virtual LED. Furthermore, based on the determined mixing weight ratio of each target LED and the mixing coefficient ratio of each physical LED corresponding to the target virtual LED, the mixing ratio of each physical LED for the target color coordinates can be determined. After determining this mixing ratio, controlling each physical LED to mix light according to this mixing ratio will produce light of the color corresponding to the target color coordinates.

[0049] In one embodiment, the method may further include:

[0050] For at least one virtual LED, the color coordinates corresponding to the virtual LED are predetermined;

[0051] Based on the mixing coefficients corresponding to each physical LED, determine the ratio of the mixing coefficients of each physical LED corresponding to the color coordinates of the virtual LED.

[0052] Store the virtual LED beads in proportion to the mixing coefficients of each physical LED bead.

[0053] Understandably, during lighting design, the color coordinates of virtual LEDs can be determined based on commonly used color temperatures or colors. Specifically, the color coordinates of virtual LEDs can be directly determined. When a virtual LED is white, its color temperature can be determined, for example, pre-determining a white virtual LED with a color temperature of 3200K and a white virtual LED with a color temperature of 8000K. The color coordinates corresponding to that color temperature can then be calculated. Therefore, the color coordinates corresponding to the virtual LEDs can be obtained in advance. Then, based on the mixing coefficients of each physical LED, the mixing coefficient ratios of each physical LED corresponding to the color coordinates of the virtual LED can be determined. When there are multiple virtual LEDs, the mixing coefficient ratios of each physical LED corresponding to each virtual LED can be determined. After determining the mixing coefficient ratio of each virtual LED and the corresponding physical LED, the mixing coefficient ratios of the virtual LED and the physical LED can be stored in a corresponding manner. This allows the target mixing coefficient ratio of each physical LED corresponding to the target virtual LED to be obtained from the pre-stored correspondence between the virtual LED and the physical LED during the dimming process, based on the determined target virtual LED.

[0054] In one embodiment, the process of determining the ratio of the mixing coefficients of each physical LED to the color coordinates of the virtual LED based on the mixing coefficients corresponding to each physical LED may further include:

[0055] For each physical LED chip, multiple mixing coefficients are determined based on the mixing coefficient range of the physical LED chip;

[0056] The multiple mixing coefficients corresponding to each physical LED bead are combined to obtain multiple sets of mixing coefficient ratios;

[0057] For each set of mixing coefficient ratios, determine the color coordinates of each physical LED bead for mixing light according to the mixing coefficient ratio;

[0058] Based on the color coordinates of the virtual LEDs, the optimal color coordinates are selected from the color coordinates corresponding to the proportions of each group of mixing coefficients.

[0059] Obtain a set of mixing coefficient ratios for each physical LED corresponding to the optimal color coordinates.

[0060] It should be noted that each physical LED bead in this embodiment has a corresponding light mixing coefficient range. For example, the light mixing coefficient range of each physical LED bead is 0~1. Based on this light mixing coefficient range, multiple light mixing coefficients can be determined. Then, the light mixing coefficients of each physical LED bead are combined to obtain multiple sets of light mixing coefficient ratios. Each set of light mixing coefficient ratios is a proportional relationship with a light mixing coefficient corresponding to each physical LED bead. For example, in practical applications, the light mixing coefficient range of each physical LED bead can be quantized into n equal parts at equal intervals. The specific quantization process is as follows:

[0061] For the light mixing coefficient range of each physical LED bead, the light mixing coefficient range of the physical LED bead from 0 to 1 is divided into n equal parts; where n is a positive integer not less than 2, the light mixing coefficient of the first part is 1 / n, the light mixing coefficient of the nth part is 1, and in each part between the first and nth parts, the light mixing coefficient of the later part is 1 / n greater than the light mixing coefficient of the previous part, thus obtaining the light mixing coefficients corresponding to each physical LED bead. Then, the light mixing coefficients in the i-th part of the n parts of the light mixing coefficients of each physical LED bead can be combined to determine multiple sets of light mixing coefficient ratios; i∈[1,n]. For example, if n is 100, that is, the light mixing coefficient range of each physical LED bead is uniformly quantized into 100 parts, resulting in 100 light mixing coefficients corresponding to each physical LED bead. Assuming there are 5 physical LED beads, then 100 light mixing coefficients can be obtained. 5 Group mixing coefficient ratio.

[0062] Understandably, after obtaining multiple sets of mixing coefficient ratios, for each set of mixing coefficient ratios, each physical LED can be instructed to mix light according to that ratio, resulting in the color coordinates of each physical LED mixed according to that ratio. This yields the color coordinates corresponding to each set of mixing coefficient ratios. Since the color coordinates of the virtual LEDs are known, the optimal color coordinates that reflect the color coordinates of the virtual LEDs can be selected from the color coordinates corresponding to each set of mixing coefficient ratios. The mixing coefficient ratio corresponding to this optimal color coordinate is the mixing coefficient ratio of each physical LED corresponding to the virtual LED, thus obtaining a set of mixing coefficient ratios corresponding to each virtual LED.

[0063] In this embodiment, the mixing coefficient range of each physical LED is quantized at equal intervals to obtain multiple mixing coefficients. The mixing coefficients of different physical LEDs are then combined to obtain multiple sets of mixing coefficient ratios. From these mixing coefficient ratios, a set of mixing coefficient ratios corresponding to each virtual LED is determined. Each physical LED mixes light according to the mixing coefficient ratio, thereby generating the virtual LED at the corresponding color coordinates. This improves the accuracy of the virtual LED and helps to improve the mixing accuracy of the lamp.

[0064] In one implementation, the above-mentioned color coordinates based on virtual LEDs, selecting the optimal color coordinates from the color coordinates corresponding to the proportions of each group of mixing coefficients, includes:

[0065] From the color coordinates corresponding to the proportions of each group of mixing coefficients, determine the first color coordinates whose color coordinates are located within the preset color scale range; the preset color scale range is determined based on the color coordinates of the virtual LEDs.

[0066] Based on the proportion of the first mixing coefficient corresponding to each first color coordinate, determine the spectral distribution corresponding to each group of first mixing coefficient proportions;

[0067] Based on each spectral distribution, determine the color rendering index corresponding to each spectral distribution;

[0068] The target color index is determined from the various color rendering indices, which meets the preset color rendering index requirements and whose corresponding first mixing coefficient ratio meets the output power requirements.

[0069] The target first color coordinates corresponding to the target color rendering index are determined based on the ratio of the first mixing coefficient corresponding to the target color rendering index.

[0070] Use the first color coordinate of the target as the optimal color coordinate.

[0071] It should be noted that, in order to further improve the light mixing accuracy in this embodiment, during the process of determining the light mixing coefficient ratio of each physical LED corresponding to each virtual LED, a preset color coordinate range can be determined based on the color coordinates of the virtual LED. This preset color coordinate range includes the color coordinates of the virtual LED, and the preset color coordinate range can specifically be color coordinate ±a, where a is a preset value. After obtaining the color coordinates corresponding to each set of light mixing coefficient ratios, each first color coordinate whose color coordinates are located within the preset color coordinate range can be selected from the color coordinates of each set of light mixing coefficient ratios based on the preset color coordinate range corresponding to the virtual LED, and the light mixing coefficient ratio corresponding to each first color coordinate is determined as the first light mixing coefficient ratio. Then, based on each set of first light mixing coefficient ratios, the spectral distribution (SPD) corresponding to the first light mixing coefficient ratio is calculated, and the corresponding color rendering index is calculated based on each spectral distribution SPD, thereby obtaining the color rendering index corresponding to each first light mixing coefficient ratio.

[0072] To better ensure the output power and color rendering effect of the lamps, color rendering index (CRI) requirements and output power requirements can be preset. Based on each CRI, a target CRI is determined that satisfies both the preset CRI and output power requirements. Then, a set of mixing coefficients corresponding to the target CRI is used as the first color coordinates, and the ratio of these mixing coefficients to the target CRI is used as the mixing coefficient ratio of each physical lamp corresponding to the virtual lamp. This ensures that when each physical lamp mixes light according to the mixing coefficient ratio, it not only produces a virtual lamp with a high CRI but also has good output power, thus improving the lamp's mixing and brightness effects.

[0073] In determining the color rendering index (CRI) that meets the preset CRI and preset output power requirements, first CRIs with CRIs greater than the preset CRI threshold (e.g., 95%) can be selected from the various CRIs. Then, based on the first mixing coefficient ratios corresponding to each first CRI, a second mixing coefficient ratio is determined where each mixing coefficient is within a preset coefficient range (e.g., 0.3 to 0.8). This allows for greater adjustability of the lamp's output power while ensuring the CRI. Furthermore, the maximum first CRI is determined as the target CRI from the first CRIs corresponding to each second mixing coefficient ratio.

[0074] In practical applications, to further improve accuracy, the mixing coefficient of each physical LED can be adjusted by fluctuating it by 10% based on the mixing coefficient ratio. This allows for a re-determination of the mixing coefficient range corresponding to each physical LED, and then a re-determination of the individual mixing coefficients corresponding to each physical LED based on this range. This results in multiple new mixing coefficient ratios. By repeating the above method, the mixing coefficient ratios of each physical LED corresponding to each virtual LED can be determined, leading to a more accurate mixing coefficient ratio and improved mixing effect. For example, the optimal mixing coefficient ratio of R:G:B:W2:W6 calculated in the first iteration is 0.15:0.22:0.30:0.42:0.10. A 10% fluctuation means adjusting each of these values ​​by 10%. For example, the mixing coefficient range corresponding to 0.15 is 0.15-0.015 to 0.15+0.015. All other coefficients are adjusted in the same way to adjust their corresponding mixing coefficient ranges. Then, the test is repeated using the above method to find a better mixing coefficient ratio. For example, the mixing coefficient of R is determined to be 0.157, thus identifying a better set of mixing coefficient ratios.

[0075] As shown in Figure 3, for the two virtual LEDs W3 and W8, a set of light mixing coefficient ratios corresponding to W3 and a set of light mixing coefficient ratios corresponding to W8 can be determined using the method described above. Please refer to Table 2 for details.

[0076] Table 2. Mixing coefficient ratio of each physical LED corresponding to the virtual LED.

[0077]

[0078] Based on this light mixing coefficient ratio table, the corresponding virtual LEDs W3 and W8 can be obtained by mixing the light of each physical LED according to the following relationship:

[0079] W3=0.026*R+0.0386*G+0.039*B+0.414*W2+0.024*W6;

[0080] W8=0.0185*R+0.0244*G+0.0807*B+0*W2+0.42*W6.

[0081] The color rendering index (CRI) of the two virtual LEDs was calculated based on the spectral distribution SPD calculated from the ratio of these two sets of mixing coefficients. It can be verified that the CRI of the two virtual LEDs has reached about 97, which is far greater than the CRI of the original white LEDs of 84. Therefore, the overall CRI of the lamp can be improved.

[0082] In one implementation, the process of determining the mixing ratio of each physical LED for the target color coordinate based on the target mixing coefficient ratio of each physical LED corresponding to the target virtual LED, combined with the mixing weight ratio, may include:

[0083] Based on the light mixing weight ratio, determine the weight coefficient of at least one target physical LED and the weight coefficient of at least one target virtual LED.

[0084] It should be noted that, for example, different target color coordinates C1 (0.3125, 0.3316), C2 (0.2852, 0.2994), and C3 (0.465, 0.366) correspond to 6500K white light, 9000K white light, and orange light, respectively. Combining the color coordinates of the various physical and virtual LEDs shown in Table 1 with geometric knowledge, it can be determined that C1, C2, and C3 are located in triangles GW8W3, GBW8, and W3W8R, respectively. According to the geometric centroid algorithm, the mixing weight ratios required for RGB, W3, and W8 mixing of C1, C2, and C3 can be calculated respectively. The RGB, W3, and W8 mixing weights corresponding to C1, C2, and C3 are shown in Table 3.

[0085] Table 3. Mixing Weight Ratio Table

[0086]

[0087] In Table 3, X represents an empty string. Taking C1 as an example, the table shows that the weight coefficient of the physical LED bead G forming C1 is 0.0205, the weight coefficient of the virtual LED bead W3 is 0.1584, and the weight coefficient of the virtual LED bead W8 is 0.821.

[0088] Based on the target mixing coefficient ratio of each physical LED corresponding to the target virtual LED, the first target mixing coefficient corresponding to each physical LED is determined; wherein, the first target mixing coefficient is the ratio of the mixing coefficient value corresponding to the physical LED to the total mixing coefficient value.

[0089] For example, please refer to the mixing coefficient ratios of each virtual LED corresponding to each physical LED in Table 2: W3 = 0.026*R + 0.0386*G + 0.039*B + 0.414*W2 + 0.024*W6; W8 = 0.0185*R + 0.0244*G + 0.0807*B + 0*W2 + 0.42*W6. For virtual LED W3, the first target mixing coefficient corresponding to physical LED R is 0.026 / 0.5416, the first target mixing coefficient corresponding to physical LED G is 0.0386 / 0.5416, the first target mixing coefficient corresponding to physical LED B is 0.039 / 0.5416, the first target mixing coefficient corresponding to physical LED W2 is 0.414 / 0.5416, and the first target mixing coefficient corresponding to physical LED W6 is 0.024 / 0.5416.

[0090] For virtual LED W8, the first target mixing coefficient corresponding to physical LED R is 0.0185 / 0.5436, the first target mixing coefficient corresponding to physical LED G is 0.0244 / 0.5436, the first target mixing coefficient corresponding to physical LED B is 0.0807 / 0.5436, the first target mixing coefficient corresponding to physical LED W2 is 0 / 0.5436 (that is, 0), and the first target mixing coefficient corresponding to physical LED W6 is 0.42 / 0.5436.

[0091] For each physical LED corresponding to the target virtual LED, the weighting coefficient of the target virtual LED is multiplied by the first target mixing coefficient corresponding to the physical LED to obtain the first product corresponding to the target virtual LED and the physical LED.

[0092] In this embodiment, C1 is used as an example for illustration. The target virtual LED beads related to C1 include W3 and W8, and the target physical LED bead is G. C1 = 0.0205G + 0.1584W3 + 0.821W8.

[0093] Therefore, for each physical LED bead of the target virtual LED bead W3: the weighting coefficient of the target virtual LED bead W3 is 0.1584, and the first target mixing coefficient of the physical LED bead R is 0.026 / 0.5416, so their first product is 0.1584*0.026 / 0.5416; the first target mixing coefficient of the physical LED bead G is 0.0386 / 0.5416, so their first product is 0.1584*0.0386 / 0.5416, and the weighting coefficient of the physical LED bead B is... The first target light mixing coefficient is 0.039 / 0.5416, so the first product of the two is 0.1584*0.039 / 0.5416; the first target light mixing coefficient of the physical LED chip W2 is 0.414 / 0.5416, so the first product of the two is 0.1584*0.414 / 0.5416; the first target light mixing coefficient of the physical LED chip W6 is 0.024 / 0.5416, so the first product of the two is 0.1584*0.024 / 0.5416.

[0094] For each physical LED bead in the target virtual LED bead W8: the weighting coefficient of the target virtual LED bead W8 is 0.821, and the first target mixing coefficient of the physical LED bead R is 0.0185 / 0.5436, so the first product of the two is 0.821*0.0185 / 0.5436; the first target mixing coefficient of the physical LED bead G is 0.0244 / 0.5436, so the first product of the two is 0.821*0.0244 / 0.5436; the first target mixing coefficient of the physical LED bead B is 0.0807 / 0.5436, so the first product of the two is 0.821*0.0807 / 0.5436; the first target mixing coefficient of the physical LED bead W2 is 0, so the first product of the two is 0; the first target mixing coefficient of the physical LED bead W6 is 0.42 / 0.5436, so the first product of the two is 0.821*0.42 / 0.5436.

[0095] For each physical LED, the weight coefficient of the target physical LED that is the same as the physical LED and the first product corresponding to all target virtual LEDs are summed to obtain the mixing coefficient of the physical LED for the target color coordinates.

[0096] In this embodiment of the disclosure, C1 is used as an example for detailed description:

[0097] C1.R=0.1584*0.026 / 0.5416+0.821*0.0185 / 0.5436=0.0355;

[0098] C1.G=0.0205+0.1584*0.0386 / 0.5416+0.821*0.0244 / 0.5436=0.0686;

[0099] C1.B=0.1584*0.039 / 0.5416+0.821*0.0807 / 0.5436=0.1333;

[0100] C1.W2=0.1584*0.414 / 0.5416=0.1211;

[0101] C1.W6=0.1584*0.024 / 0.5416+0.821*0.42 / 0.5436=0.6413.

[0102] Wherein, C1.R represents the light output required by the red LED R to produce the light of C1; C1.G represents the light output required by the green LED G to produce the light of C1; C1.B represents the light output required by the blue LED B to produce the light of C1; C1.W2 represents the light output required by the white LED W2 to produce the light of C1; and C1.W6 represents the light output required by the white LED W6 to produce the light of C1.

[0103] Based on the mixing coefficient of each physical LED for the target color coordinates, the mixing ratio of each physical LED for the target color coordinates is obtained.

[0104] Understandably, based on the same calculation method described above, the mixing ratios of C2 and C3 can be calculated, as shown in Table 4. By mixing light according to this ratio, the output SPD can also be calculated. The color coordinates of C1, C2, and C3, as well as the color rendering indexes of the two white lights, can also be calculated using Table 4.

[0105] Table 4. Mixing ratio and color rendering index at different color coordinates

[0106]

[0107] In Table 4, X represents non-white light without considering the color rendering index.

[0108] It should be noted that the color coordinates after light mixing are extremely close to the expected color coordinates. From the color rendering index (CRI) of C1, it can be seen that the CRI of the 6500K white light generated by the mixing of five physical LEDs is 97.35, which is much higher than the CRI of 84 when a single 6500K LED emits light, and also much higher than the luminous power of a single physical LED W6. Each physical LED has a spectral distribution specified by the manufacturer (as shown in Table 5). Based on this specified spectral distribution, the CRI of two white LEDs is approximately 84. The CRI of C2 is also relatively high, much higher than the CRI of the physical LED W6 with adjacent color coordinates, which can meet the needs of most professional lighting. C3 is orange light, so its CRI does not need to be considered. However, because white light participates in the mixing, the color is more natural, and it can also output relatively high power.

[0109] Therefore, the lamp in this disclosure has multiple physical lamp beads, and each physical lamp bead can mix light to form a virtual lamp bead. The area enclosed by the color coordinates of at least three colored lamp beads in each physical lamp bead is divided into multiple triangles by the at least three colored lamp beads and the virtual lamp beads. During the dimming process, the target triangle where the target color coordinate is located and each target lamp bead in the target triangle can be determined according to the target color coordinate. Then, the mixing weight ratio of each target lamp bead can be determined according to the color coordinates corresponding to each target lamp bead and the target color coordinate. Since the target virtual lamp bead in each target lamp bead is formed by mixing light from each physical lamp bead, the target mixing coefficient ratio of each physical lamp bead relative to the target virtual lamp bead can be determined. Furthermore, according to the mixing weight ratio of each target lamp bead and the target mixing coefficient ratio of each physical lamp bead, the mixing ratio of each physical lamp bead relative to the target color coordinate can be determined. Each physical lamp bead mixes light according to the mixing ratio to form light of the color corresponding to the target color coordinate. In the light mixing adjustment process of the lamp disclosed herein, each physical LED participates in dimming, which can fully utilize the rated power of each physical LED and improve the color rendering index. Furthermore, during the dimming process, the mixing weight ratio of the target LED is determined based on the target color coordinates, combined with the target mixing coefficient ratio of each physical LED relative to the target virtual LED, to determine the final mixing ratio of each physical LED. When the target color coordinates change, the mixing weight ratio and the target mixing coefficient will adaptively change. Therefore, a smooth transition from white light to colored light can be achieved during the dimming process, improving the user experience.

[0110] Table 5. Spectrum distribution of each physical LED chip

[0111]

[0112]

[0113]

[0114]

[0115] The multi-color mixing method for a light-emitting device in this embodiment is applied to an LED light-emitting device comprising multiple physical LED beads. Each physical LED bead mixes light to form at least one virtual LED bead. The multiple physical LED beads include at least three colored LED beads of different colors and at least one white LED bead. Each physical LED bead can mix light to form a virtual LED bead. The area enclosed by the color coordinates of at least three colored LED beads among the physical LED beads is divided into multiple triangles by the at least three colored LED beads and the virtual LED bead. During dimming, the target triangle containing the target color coordinates and the target LED beads on the target triangle can be determined based on the target color coordinates. Then, according to... The mixing weight ratio of each target LED bead can be determined by the color coordinates of the target LED beads at the three vertices of the target triangle and the target color coordinates. Since the target virtual LED bead in each target LED bead is formed by mixing light from each physical LED bead, the target mixing coefficient ratio of each physical LED bead relative to the target virtual LED bead can be determined. Furthermore, based on the mixing weight ratio of each target LED bead and the target mixing coefficient ratio of each physical LED bead, the mixing ratio of each physical LED bead relative to the target color coordinates can be determined. By controlling each physical LED bead to mix light according to the mixing ratio, light can be mixed to form light of the color corresponding to the target color coordinates. In the light mixing adjustment process of the lamp disclosed herein, each physical LED participates in dimming, which can fully utilize the rated power of each physical LED and improve the color rendering index. Furthermore, during the dimming process, the mixing weight ratio of the target LED is determined based on the target color coordinates, combined with the target mixing coefficient ratio of each physical LED relative to the target virtual LED, to determine the final mixing ratio of each physical LED. When the target color coordinates change, the mixing weight ratio and the target mixing coefficient will adaptively change. Therefore, a smooth transition from white light to colored light can be achieved during the dimming process, improving the user experience.

[0116] This disclosure also provides a corresponding apparatus for the multicolor mixing method of a light-emitting device, further enhancing the practicality of the method. The apparatus can be described from both a functional module perspective and a hardware perspective. The multicolor mixing apparatus for a light-emitting device provided in this disclosure is described below. This apparatus is used to implement the multicolor mixing method of the light-emitting device provided in this disclosure. Its implementation form is not specifically limited and can be implemented using hardware, software, firmware, or any combination thereof, depending on the actual application scenario requirements. In this embodiment, the multicolor mixing apparatus for a light-emitting device may include or be divided into one or more program modules. These one or more program modules are stored in a storage medium and executed by one or more processors to complete the multicolor mixing method of the light-emitting device disclosed in the above embodiments. The program module referred to in this disclosure is a series of computer program instruction segments capable of performing specific functions, which is more suitable than the program itself for describing the execution process of the multicolor mixing apparatus of the light-emitting device in the storage medium. Besides software implementation, this device can also be implemented in pure hardware. For example, the corresponding functional circuits can be directly integrated into hardware chips such as Application-Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), and Complex Programmable Logic Devices (CPLDs), completing multi-color mixing operations without relying on program instructions. Alternatively, it can be implemented in firmware, where the functional logic is embedded in storage media such as Read-Only Memory (ROM) or Flash memory, combining the stability of hardware with the flexibility of software. A combination of hardware, software, and firmware can also be used, for example, implementing the core control logic through a hardware chip, while auxiliary configuration and data processing functions are executed through program modules, balancing execution efficiency, development flexibility, and cost control requirements. The following description will specifically introduce the functions of each program module in this embodiment. The multi-color mixing device of the light-emitting device described below corresponds to the multi-color mixing method based on the light-emitting device described above.

[0117] From the perspective of functional modules, referring to Figure 5, Figure 5 is a structural diagram of a multi-color mixing device for a light-emitting device provided in this disclosure. This device is applied to an LED light-emitting device including multiple physical LED beads. Each of the physical LED beads mixes light to form at least one virtual LED bead. The multiple physical LED beads include at least three colored LED beads of different colors and at least one white LED bead. The device may include:

[0118] Module 11 is used to obtain the target color coordinates;

[0119] The first determining module 12 is used to determine the target triangle where the target color coordinates are located; wherein, at least three of the colored LED beads and at least one of the virtual LED beads divide the area enclosed by the color coordinates of the at least three colored LED beads into multiple triangles;

[0120] The second determining module 13 is used to determine the mixing weight ratio of each target LED relative to the target color coordinates based on the target color coordinates and the color coordinates of each target LED located at the three vertices of the target triangle; each target LED includes at least one target physical LED and at least one target virtual LED.

[0121] The third determining module 14 is used to determine the mixing ratio of each physical lamp bead for the target color coordinates according to the target mixing coefficient ratio and the mixing weight ratio, so as to control each of the physical lamp beads to emit light based on the mixing ratio, wherein each of the physical lamp beads has a target mixing coefficient ratio corresponding to the target virtual lamp bead formed by mixing light.

[0122] In one embodiment, the device further includes:

[0123] The fourth determining module is used to pre-determine the color coordinates corresponding to at least one virtual LED.

[0124] The fifth determining module is used to determine the ratio of the mixing coefficients of each physical LED to the color coordinates of the virtual LED, based on the mixing coefficients of each physical LED.

[0125] The storage module is used to store the ratio of the mixing coefficients of the virtual LED beads to those of the physical LED beads.

[0126] In one implementation, the fifth determining module includes:

[0127] The first determining unit is used to determine multiple mixing coefficients for each physical LED bead based on the mixing coefficient range of the physical LED bead.

[0128] The combination unit is used to combine multiple mixing coefficients corresponding to each physical LED to obtain multiple sets of mixing coefficient ratios;

[0129] The second determining unit is used to determine the color coordinates of each physical LED bead for mixing light according to the mixing coefficient ratio for each group of mixing coefficient ratios.

[0130] The filtering unit is used to filter out the optimal color coordinates from the color coordinates corresponding to the proportions of each group of mixing coefficients, based on the color coordinates of the virtual LEDs.

[0131] The acquisition unit is used to acquire the mixing coefficient ratio of a set of individual LED beads corresponding to the optimal color coordinates.

[0132] In one embodiment, the filtering unit includes:

[0133] The first determining subunit is used to determine each first color coordinate that is located within a preset color scale range from the color coordinates corresponding to the proportion of each group of mixing coefficients; the preset color scale range is determined based on the color coordinates of the virtual LEDs.

[0134] The second determining subunit is used to determine the spectral distribution corresponding to each group of first mixing coefficient ratios based on the proportion of the first mixing coefficients corresponding to each first color coordinate.

[0135] The third determining subunit is used to determine the color rendering index corresponding to each spectral distribution based on each spectral distribution;

[0136] The fourth determining subunit is used to determine the target color index from the various color indexes that meets the preset color index requirements and whose corresponding first mixing coefficient ratio meets the output power requirements.

[0137] The fifth determining subunit is used to determine the target first color coordinates corresponding to the target color rendering index based on the proportion of the first mixing coefficient corresponding to the target color rendering index;

[0138] The sixth determining sub-unit is used to take the target's first color coordinate as the optimal color coordinate.

[0139] In one implementation, the fourth determining subunit includes:

[0140] The first screening subunit is used to screen out each first color index from the various color indices whose color index is greater than the preset color index threshold.

[0141] The seventh determining subunit is used to determine, based on the proportion of the first mixing coefficients corresponding to each of the first color rendering indices, the proportion of the second mixing coefficient in the first mixing coefficient proportion in which each mixing coefficient is within a preset coefficient range.

[0142] The eighth determining subunit is used to determine the maximum first color rendering index from the first color rendering indices corresponding to each proportion of the second mixing coefficient;

[0143] The ninth determining sub-unit is used to take the maximum first color rendering index as the target color rendering index.

[0144] In one implementation, the first determining unit is specifically used for:

[0145] For each physical LED bead, the mixing coefficient range of the physical LED bead is quantized at equal intervals to obtain multiple mixing coefficients corresponding to the physical LED bead.

[0146] In one embodiment, the third determining module 14 includes:

[0147] The third determining unit is used to determine the weight coefficient of at least one target physical LED and the weight coefficient of at least one target virtual LED based on the light mixing weight ratio.

[0148] The fourth determining unit is used to determine the first target mixing coefficient corresponding to each physical lamp bead based on the target mixing coefficient ratio of each physical lamp bead corresponding to the target virtual lamp bead.

[0149] The first calculation unit is used to multiply the weight coefficient of the target virtual lamp bead by the first target mixing coefficient corresponding to the physical lamp bead for each physical lamp bead corresponding to the target virtual lamp bead, so as to obtain the first product corresponding to the target virtual lamp bead and the physical lamp bead.

[0150] The second calculation unit is used to sum the weight coefficient of the target physical lamp bead that is the same as the physical lamp bead and the first product corresponding to all the target virtual lamp beads for each physical lamp bead, so as to obtain the mixing coefficient of the physical lamp bead for the target color coordinates.

[0151] The fifth determining unit is used to obtain the mixing ratio of each physical LED for the target color coordinate based on the mixing coefficient of each physical LED for the target color coordinate.

[0152] In one embodiment, the second determining module 13 includes:

[0153] The sixth determining unit is used to determine the output light energy ratio of each target LED based on the target color coordinates and the color coordinates of each target LED in the target triangle.

[0154] The seventh determining unit is used to determine the output light energy ratio of each target LED as the mixing weight ratio of each target LED relative to the target color coordinate.

[0155] It should be noted that the multicolor mixing device of the light-emitting device provided in this embodiment has the same beneficial effects as the multicolor mixing method of the light-emitting device provided in the above embodiment. For a detailed description of the multicolor mixing method of the light-emitting device involved in this embodiment, please refer to the above embodiment. This disclosure will not repeat it here.

[0156] Based on the above embodiments, this disclosure also provides a multicolor mixing system for a light-emitting device, applied to a lamp comprising a plurality of physical LEDs and at least one virtual LED formed by mixing the light from the physical LEDs, wherein the plurality of physical LEDs include at least three colored LEDs of different colors and at least one white LED, and the system includes a memory and a processor, wherein:

[0157] Memory, used to store computer programs;

[0158] A processor is configured to execute the computer program to implement the steps of the multicolor mixing method for the light-emitting device as described above.

[0159] The processor may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor can be implemented using at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), or PLA (Programmable Logic Array). The processor may also include a main processor and coprocessors. The main processor, also known as a CPU (Central Processing Unit), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor may integrate a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, the processor may also include an AI (Artificial Intelligence) processor, which handles computational operations related to machine learning.

[0160] The memory may include one or more computer-readable storage media, which may be non-transitory. The memory may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In some embodiments, the memory may be an internal storage unit of the system, such as a server's hard drive. In other embodiments, the memory may be an external storage device of the system, such as a plug-in hard drive on a server, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc.

[0161] It is understood that if the multicolor mixing method of the light-emitting device in the above embodiments is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to the related technology, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and executes all or part of the steps of the methods in the various embodiments of this disclosure. The aforementioned storage medium includes: USB flash drive, mobile hard disk, read-only memory (ROM), random access memory (RAM), electrically erasable programmable ROM, register, hard disk, removable disk, CD-ROM, magnetic disk, or optical disk, and other media capable of storing program code.

[0162] Based on this, the present disclosure also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the multicolor mixing method of the light-emitting device described above.

[0163] In addition, this disclosure also provides a lighting fixture, including a plurality of physical LED beads, at least one virtual LED bead formed by mixing the light from the physical LED beads, and a multi-color mixing system for the light-emitting device as described above, wherein the plurality of physical LED beads include at least three colored LED beads of different colors and at least one white LED bead.

[0164] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0165] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0166] The above description of the disclosed embodiments enables those skilled in the art to make or use this disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-color mixing method for a light-emitting device, applied to an LED light-emitting device comprising a plurality of physical LED beads, wherein the physical LED beads are mixed to form at least one virtual LED bead, and the plurality of physical LED beads include at least three colored LED beads of different colors and at least one white LED bead, the method comprising: Obtain the target color coordinates; Determine the target triangle where the target color coordinates are located; wherein, at least three of the colored LED beads and at least one of the virtual LED beads divide the area enclosed by the color coordinates of the at least three colored LED beads into multiple triangles; Based on the target color coordinates and the color coordinates of the target LEDs located at the three vertices of the target triangle, the mixing weight ratio of each target LED with respect to the target color coordinates is determined; each target LED includes at least one target physical LED and at least one target virtual LED. Based on the target mixing coefficient ratio and the mixing weight ratio, the mixing ratio of each physical LED bead for the target color coordinate is determined so as to control each physical LED bead to emit light based on the mixing ratio, wherein each physical LED bead has a target mixing coefficient ratio corresponding to the target virtual LED bead formed by mixing light.

2. The multicolor mixing method for a light-emitting device according to claim 1, wherein, Also includes: For at least one of the virtual LED beads, the color coordinates corresponding to the virtual LED bead are predetermined; Based on the mixing coefficients corresponding to each of the physical LED beads, the ratio of the mixing coefficients of each of the physical LED beads corresponding to the color coordinates of the virtual LED beads is determined. The mixing coefficient ratios of the virtual LED beads and the physical LED beads are stored accordingly.

3. The multicolor mixing method for a light-emitting device according to claim 2, wherein, The step of determining the ratio of the mixing coefficients of each physical LED bead to the color coordinates of the virtual LED bead based on the mixing coefficients of each physical LED bead includes: For each of the physical LED beads, multiple mixing coefficients are determined based on the mixing coefficient range of the physical LED beads; The multiple light mixing coefficients corresponding to each of the physical LED beads are combined to obtain multiple sets of light mixing coefficient ratios; For each set of light mixing coefficient ratios, determine the color coordinates of each physical LED bead for light mixing according to the light mixing coefficient ratios; Based on the color coordinates of the virtual LED beads, the optimal color coordinates are selected from the color coordinates corresponding to the proportions of each group of mixing coefficients. Obtain the light mixing coefficient ratio of each of the physical LED beads corresponding to the optimal color coordinates.

4. The multicolor mixing method for a light-emitting device according to claim 3, wherein, The step of selecting the optimal color coordinates from the color coordinates corresponding to the proportions of each group of mixing coefficients based on the color coordinates of the virtual LED beads includes: From the color coordinates corresponding to the proportions of each group of mixing coefficients, determine each first color coordinate whose color coordinates are located within a preset color scale range; the preset color scale range is determined based on the color coordinates of the virtual LED. Based on the proportion of the first mixing coefficient corresponding to each of the first color coordinates, determine the spectral distribution corresponding to each group of first mixing coefficient proportions; Based on each of the spectral distributions, determine the color rendering index corresponding to each of the spectral distributions; From each of the color rendering indices, a target color rendering index is determined that satisfies the preset color rendering index requirement and the corresponding first mixing coefficient ratio satisfies the output power requirement. The target first color coordinates corresponding to the target color rendering index are determined based on the ratio of the first mixing coefficient corresponding to the target color rendering index. The first color coordinate of the target is taken as the optimal color coordinate.

5. The multicolor mixing method for a light-emitting device according to claim 4, wherein, The step of determining the target color index from the various color rendering indices that satisfies the preset color rendering index requirement and whose corresponding first mixing coefficient ratio satisfies the output power requirement includes: Select the first color indexes from the various color indexes whose color index is greater than the preset color index threshold; Based on the proportion of the first mixing coefficients corresponding to each of the first color rendering indices, a second mixing coefficient proportion in which each mixing coefficient is within a preset coefficient range is determined. The largest first color rendering index is determined from the first color rendering indices corresponding to each proportion of the second mixing coefficient; The maximum first color rendering index is taken as the target color rendering index.

6. The multicolor mixing method for the light-emitting device according to claim 3, wherein, For each of the physical LED beads, multiple light mixing coefficients are determined based on the light mixing coefficient range of the physical LED beads, including: For each physical LED bead, the mixing coefficient range of the physical LED bead is quantized at equal intervals to obtain multiple mixing coefficients corresponding to the physical LED bead.

7. The multicolor mixing method for a light-emitting device according to any one of claims 1 to 6, wherein, The step of determining the mixing ratio of each physical LED bead relative to the target color coordinates based on the target mixing coefficient ratio and the mixing weight ratio includes: Based on the light mixing weight ratio, determine the weight coefficient of at least one of the target physical LED beads and the weight coefficient of at least one of the target virtual LED beads; Based on the target mixing coefficient ratio of each physical lamp corresponding to the target virtual lamp, determine the first target mixing coefficient corresponding to each of the physical lamps; For each physical LED corresponding to the target virtual LED, the weight coefficient of the target virtual LED is multiplied by the first target mixing coefficient corresponding to the physical LED to obtain the first product corresponding to the target virtual LED and the physical LED. For each physical LED bead, the weight coefficient of the target physical LED bead that is the same as the physical LED bead and the first product corresponding to all target virtual LED beads are summed to obtain the mixing coefficient of the physical LED bead for the target color coordinates. Based on the mixing coefficient of each physical LED for the target color coordinates, the mixing ratio of each physical LED for the target color coordinates is obtained.

8. The multicolor mixing method for a light-emitting device according to claim 7, wherein, The step of determining the mixing weight ratio of each target LED relative to the target color coordinates based on the target color coordinates and the color coordinates of the target LEDs at the three vertices of the target triangle includes: Based on the target color coordinates and the color coordinates corresponding to each target LED in the target triangle, determine the output light energy ratio of each target LED; The output light energy ratio of each target LED is determined as the mixing weight ratio of each target LED relative to the target color coordinate.

9. A multi-color mixing device for a light-emitting device, applied to an LED light-emitting device comprising a plurality of physical LED beads, wherein the physical LED beads are mixed to form at least one virtual LED bead, and the plurality of physical LED beads include at least three colored LED beads of different colors and at least one white LED bead, the device comprising: The acquisition module is used to obtain the target color coordinates; The first determining module is used to determine the target triangle where the target color coordinates are located; wherein, at least three of the colored LED beads and at least one of the virtual LED beads divide the area enclosed by the color coordinates of the at least three colored LED beads into multiple triangles; The second determining module is used to determine the mixing weight ratio of each target LED relative to the target color coordinates based on the target color coordinates and the color coordinates of the target LEDs located at the three vertices of the target triangle; each target LED includes at least one target physical LED and at least one target virtual LED. The third determining module is used to determine the mixing ratio of each physical LED bead relative to the target color coordinates based on the target mixing coefficient ratio and the mixing weight ratio, so as to control each physical LED bead to emit light based on the mixing ratio, wherein each physical LED bead has a target mixing coefficient ratio corresponding to the target virtual LED bead formed by mixing light.

10. The multicolor mixing device according to claim 9, wherein, The device also includes: The fourth determining module is used to pre-determine the color coordinates corresponding to at least one virtual LED. The fifth determining module is used to determine the ratio of the mixing coefficients of each physical LED to the color coordinates of the virtual LED, based on the mixing coefficients of each physical LED. The storage module is used to store the ratio of the mixing coefficients of the virtual LED beads to those of the physical LED beads.

11. The multicolor mixing device according to claim 10, wherein, The fifth determining module includes: The first determining unit is used to determine multiple mixing coefficients for each physical LED bead based on the mixing coefficient range of the physical LED bead. The combination unit is used to combine multiple mixing coefficients corresponding to each physical LED to obtain multiple sets of mixing coefficient ratios; The second determining unit is used to determine the color coordinates of each physical LED bead for mixing light according to the mixing coefficient ratio for each group of mixing coefficient ratios. The filtering unit is used to filter out the optimal color coordinates from the color coordinates corresponding to the proportions of each group of mixing coefficients, based on the color coordinates of the virtual LEDs. The acquisition unit is used to acquire the mixing coefficient ratio of a set of individual LED beads corresponding to the optimal color coordinates.

12. The multicolor mixing device according to claim 11, wherein, The filtering unit includes: The first determining subunit is used to determine each first color coordinate that is located within a preset color scale range from the color coordinates corresponding to the proportion of each group of mixing coefficients; the preset color scale range is determined based on the color coordinates of the virtual LEDs. The second determining subunit is used to determine the spectral distribution corresponding to each group of first mixing coefficient ratios based on the proportion of the first mixing coefficients corresponding to each first color coordinate. The third determining subunit is used to determine the color rendering index corresponding to each spectral distribution based on each spectral distribution; The fourth determining subunit is used to determine the target color index from the various color indexes that meets the preset color index requirements and whose corresponding first mixing coefficient ratio meets the output power requirements. The fifth determining subunit is used to determine the target first color coordinates corresponding to the target color rendering index based on the proportion of the first mixing coefficient corresponding to the target color rendering index; The sixth determining sub-unit is used to take the target's first color coordinate as the optimal color coordinate.

13. The multicolor mixing device according to claim 12, wherein, The fourth determining subunit includes: The first screening subunit is used to screen out each first color index from the various color indices whose color index is greater than the preset color index threshold. The seventh determining subunit is used to determine, based on the proportion of the first mixing coefficients corresponding to each of the first color rendering indices, the proportion of the second mixing coefficient in the first mixing coefficient proportion in which each mixing coefficient is within a preset coefficient range. The eighth determining subunit is used to determine the maximum first color rendering index from the first color rendering indices corresponding to each proportion of the second mixing coefficient; The ninth determining sub-unit is used to take the maximum first color rendering index as the target color rendering index.

14. The multicolor mixing device according to claim 11, wherein, The first determining unit is used to quantize the mixing coefficient range of each physical LED bead at equal intervals to obtain multiple mixing coefficients corresponding to the physical LED bead.

15. The multicolor mixing device according to claim 9, wherein, The third determining module includes: The third determining unit is used to determine the weight coefficient of at least one target physical LED and the weight coefficient of at least one target virtual LED based on the light mixing weight ratio. The fourth determining unit is used to determine the first target mixing coefficient corresponding to each physical lamp bead based on the target mixing coefficient ratio of each physical lamp bead corresponding to the target virtual lamp bead. The first calculation unit is used to multiply the weight coefficient of the target virtual lamp bead by the first target mixing coefficient corresponding to the physical lamp bead for each physical lamp bead corresponding to the target virtual lamp bead, so as to obtain the first product corresponding to the target virtual lamp bead and the physical lamp bead. The second calculation unit is used to sum the weight coefficient of the target physical lamp bead that is the same as the physical lamp bead and the first product corresponding to all the target virtual lamp beads for each physical lamp bead, so as to obtain the mixing coefficient of the physical lamp bead for the target color coordinates. The fifth determining unit is used to obtain the mixing ratio of each physical LED for the target color coordinate based on the mixing coefficient of each physical LED for the target color coordinate.

16. The multicolor mixing device according to claim 15, wherein, The second determining module includes: The sixth determining unit is used to determine the output light energy ratio of each target LED based on the target color coordinates and the color coordinates of each target LED in the target triangle. The seventh determining unit is used to determine the output light energy ratio of each target LED as the mixing weight ratio of each target LED relative to the target color coordinate.

17. A multi-color mixing system for a light-emitting device, applied to a luminaire comprising a plurality of physical LEDs and at least one virtual LED formed by mixing the light from the physical LEDs, wherein the plurality of physical LEDs include at least three colored LEDs of different colors and at least one white LED, the system comprising a memory and a processor, wherein: The memory is used to store computer programs; The processor is configured to implement the steps of the multicolor mixing method of the light-emitting device as described in any one of claims 1 to 8 when executing the computer program.

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