CN116546706B - Dimming method and device, lighting equipment and computer-readable storage medium - Google Patents
Dimming method and device, lighting equipment and computer-readable storage medium Download PDFInfo
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/155—Coordinated control of two or more light sources
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The application discloses a dimming method and device, lighting equipment and a computer readable storage medium, wherein the dimming method comprises the following steps: controlling the first light source to irradiate a first spectrum with a first color temperature, and controlling the second light source to irradiate a second spectrum with a second color temperature; mixing a first spectrum with a first color temperature and a second spectrum with a second color temperature to obtain a first mixed spectrum; controlling the third light source to irradiate the red primary color spectrum, the fourth light source to irradiate the green primary color spectrum and the fifth light source to irradiate the blue primary color spectrum; and compensating at least one spectrum of the red primary color spectrum, the green primary color spectrum and the blue primary color spectrum according to a specific proportion in the first mixed spectrum to obtain a second mixed spectrum, wherein the coordinate of the second mixed spectrum on the chromaticity diagram is positioned on the Planckian curve of the chromaticity diagram.
Description
Technical Field
The present application relates to the field of lighting technologies, and in particular, to a dimming method and device, a lighting device, and a computer readable storage medium.
Background
Along with the development of technology and the improvement of life quality requirements, the color temperature-adjustable lighting device is gradually valued by people, and as people are most accustomed to natural white light, the lighting light emitted by the lighting device is close to the natural white light, and the aim pursued by the lighting industry is always achieved.
In most conventional lighting devices, the adjustment of the lighting light is achieved by adjusting two light sources with different color temperatures. However, when two light sources with different color temperatures are mixed, the spectrum obtained after mixing often deviates from the planckian curve of white light, so that the generated white light has poor effect and is very different from natural white light, and the use requirement cannot be met.
Disclosure of Invention
The application provides a dimming method and device, lighting equipment and a computer readable storage medium, which are specifically as follows:
in one aspect, the present application provides a dimming method applied to a lighting device, the method comprising:
controlling the first light source to irradiate a first spectrum with a first color temperature, and controlling the second light source to irradiate a second spectrum with a second color temperature;
mixing the first spectrum with the first color temperature and the second spectrum with the second color temperature to obtain a first mixed spectrum, wherein the coordinates of the first mixed spectrum on a chromaticity diagram are (x 1, y 1); wherein the abscissa on the chromaticity diagram represents the proportion of the red primary color in the spectrum, and the ordinate on the chromaticity diagram represents the proportion of the green primary color in the spectrum, and the proportion of the blue primary color in the spectrum is related to the proportion of the red primary color and the proportion of the green primary color;
controlling the third light source to irradiate the red primary color spectrum, the fourth light source to irradiate the green primary color spectrum and the fifth light source to irradiate the blue primary color spectrum;
compensating at least one spectrum of the red primary color spectrum, the green primary color spectrum and the blue primary color spectrum into the first mixed spectrum according to a specific proportion to obtain a second mixed spectrum, wherein the coordinates of the second mixed spectrum on a chromaticity diagram are (x 2, y 2); wherein the coordinates (x 2, y 2) lie on the planckian curve on the chromaticity diagram.
In another aspect, the present application provides a dimming device applied to a lighting apparatus, the device comprising:
the first control module is used for controlling the first light source to irradiate a first spectrum with a first color temperature and controlling the second light source to irradiate a second spectrum with a second color temperature; mixing the first spectrum with the first color temperature and the second spectrum with the second color temperature to obtain a first mixed spectrum, wherein the coordinates of the first mixed spectrum on a chromaticity diagram are (x 1, y 1); wherein the abscissa on the chromaticity diagram represents the proportion of the red primary color in the spectrum, and the ordinate on the chromaticity diagram represents the proportion of the green primary color in the spectrum, and the proportion of the blue primary color in the spectrum is related to the proportion of the red primary color and the proportion of the green primary color;
the second control module is used for controlling the third light source to irradiate the red primary color spectrum, the fourth light source to irradiate the green primary color spectrum and the fifth light source to irradiate the blue primary color spectrum; compensating at least one spectrum of the red primary color spectrum, the green primary color spectrum and the blue primary color spectrum into the first mixed spectrum according to a specific proportion to obtain a second mixed spectrum, wherein the abscissa of the second mixed spectrum on a chromaticity diagram is (x 2, y 2); wherein the coordinates (x 2, y 2) lie on the planckian curve on the chromaticity diagram.
In another aspect, the present disclosure provides a lighting apparatus including a light source assembly including a first light source, a second light source, a third light source, a fourth light source, and a fifth light source, and a dimming device; the dimming device comprises a processor and a memory, wherein the memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory so as to enable the dimming device to execute the dimming method.
In another aspect, the present application provides a computer-readable storage medium storing a computer program for causing a computer to execute the above-described dimming method.
According to the technical scheme, the first spectrum with the first color temperature and the second spectrum with the second color temperature are mixed, and a first mixed spectrum is obtained; and compensating at least one spectrum of the red primary color spectrum, the green primary color spectrum and the blue primary color spectrum according to a specific proportion in the first mixed spectrum to obtain a second mixed spectrum, wherein the coordinates of the second mixed spectrum obtained after compensation on the chromaticity diagram are positioned on the Planckian curve on the chromaticity diagram, so that the obtained second mixed spectrum is ensured to be close to natural white light, and the second mixed spectrum has a very good lighting effect by taking the second mixed spectrum as lighting light, thereby meeting the use requirements of users.
Drawings
Fig. 1 is a schematic flow chart of a dimming method according to an embodiment of the present application;
FIG. 2 is a chromaticity diagram schematic provided by an embodiment of the present application;
FIG. 3 is a schematic diagram of an original light modulation curve according to an embodiment of the present application;
fig. 4 is a correspondence between each point coordinate (solid circle) on the original dimming curve and each point coordinate (open circle) on the planckian curve provided by the embodiment of the present application;
fig. 5 is a schematic structural diagram of a dimming device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a lighting device according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a lighting device according to an embodiment of the present application.
Detailed Description
The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that, the term "and/or" herein is merely an association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship. It should also be understood that, in the embodiments of the present application, reference to "corresponding" may mean that there is a direct correspondence or an indirect correspondence between the two, and may also mean that there is an association between the two. It should also be appreciated that references to "first" and "second" in embodiments of the present application are for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying any particular order of such features. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.
It should be noted that the "lighting device" described herein may be any type of device, such as: desk lamps, floor lamps, indoor ceiling lamps, outdoor lighting equipment, and the like.
Fig. 1 is a schematic flow chart of a dimming method according to an embodiment of the present application, where the dimming method is applied to a lighting device, as shown in fig. 1, and includes the following steps:
step 101: the first light source is controlled to illuminate a first spectrum having a first color temperature, and the second light source is controlled to illuminate a second spectrum having a second color temperature.
In the embodiment of the application, the first light source and the second light source are both white light sources, and for convenience of distinction, the first light source is the first white light source, and the second light source is the second white light source.
In some embodiments, the first light source is a warm white light source, such as a light source having a color temperature of 2700K. The second light source is a positive white light source, for example a light source with a color temperature of 6500K.
It is understood that the color temperature of the light source is the color temperature of the spectrum (or referred to as light) illuminated by the light source.
In the embodiment of the application, the first light source is controlled to irradiate a first spectrum with a first color temperature, and the second light source is controlled to irradiate a second spectrum with a second color temperature, wherein the coordinates of the first spectrum with the first color temperature on the chromaticity diagram and the coordinates of the second spectrum with the second color temperature on the chromaticity diagram are both positioned on the Planck curve.
Here, the chromaticity diagram refers to the CIE1931 chromaticity diagram, the abscissa on the chromaticity diagram represents the proportion of the red primary color in the spectrum, and the ordinate on the chromaticity diagram represents the proportion of the green primary color in the spectrum, and the proportion of the blue primary color in the spectrum is related to the proportion of the red primary color and the proportion of the green primary color.
In one example, as shown in fig. 2, in the chromaticity diagram, the x-coordinate represents the proportion of the red primary color, the y-coordinate represents the proportion of the green primary color, and the coordinate z representing the proportion of the blue primary color can be deduced from x+y+z=1. On the chromaticity diagram, there is a special curve, namely the planckian curve (also called the blackbody curve).
Step 102: the first spectrum with the first color temperature and the second spectrum with the second color temperature are mixed to obtain a first mixed spectrum.
In the embodiment of the present application, the mixing of the first spectrum having the first color temperature and the second spectrum having the second color temperature may be achieved by:
obtaining a first setting operation for setting a first mixing ratio of the first spectrum and the second spectrum; the first spectrum having the first color temperature and the second spectrum having the second color temperature are mixed according to a first mixing ratio.
Here, the mixing ratio may also be referred to as a luminous flux ratio. Accordingly, the first mixing ratio is a first light flux ratio comprising a light flux ratio corresponding to a first spectrum having a first color temperature and a light flux ratio corresponding to a second spectrum having a second color temperature. As an example, the following table 1 gives the light flux ratio corresponding to a first spectrum having a first color temperature and the light flux ratio corresponding to a second spectrum having a second color temperature:
| first light source (first spectrum with first color temperature) | Second light source (second spectrum with second color temperature) |
| 100% | 0% |
| 80% | 20% |
| 60% | 40% |
| 40% | 60% |
| 20% | 80% |
| 0% | 100% |
TABLE 1
The spectrally corresponding luminous flux is equal to the total luminous flux times the spectrally corresponding luminous flux ratio. Wherein the total luminous flux can be set as desired.
The first spectrum with the first color temperature and the second spectrum with the second color temperature are mixed to obtain a first mixed spectrum, wherein the coordinates of the first mixed spectrum on the chromaticity diagram are (x 1, y 1).
Here, the first mixed spectrum differs in coordinates on the chromaticity diagram according to the different first mixing ratios. The first mixing proportion is adjusted, and a track formed by coordinates of the first mixing spectrum on the chromaticity diagram is called an original dimming curve.
As shown in fig. 3, fig. 3 is a simplified diagram of a chromaticity diagram, and, taking a first color temperature of 2700K and a second color temperature of 6500K as an example, a dimming curve (i.e., an original dimming curve) corresponding to a mixed spectrum obtained by mixing spectrums of the two color temperatures is a straight line (or an approximate straight line).
Step 103: the third light source is controlled to illuminate the red primary color spectrum, the fourth light source is controlled to illuminate the green primary color spectrum, and the fifth light source is controlled to illuminate the blue primary color spectrum.
In the embodiment of the present application, the third light source, the fourth light source and the fifth light source are respectively: red (R) light source, green (G) light source, and blue (B) light source. These three light sources may be collectively referred to as RGB light sources. The spectrum (or called light) irradiated by the third light source is red primary spectrum (or called red light for short), the spectrum (or called light) irradiated by the fourth light source is green primary spectrum (or called green light for short), and the spectrum (or called light) irradiated by the fifth light source is blue primary spectrum (or called blue light for short).
Step 104: and compensating at least one spectrum of the red primary color spectrum, the green primary color spectrum and the blue primary color spectrum according to a specific proportion in the first mixed spectrum to obtain a second mixed spectrum, wherein the coordinate of the second mixed spectrum on the chromaticity diagram is positioned on the Planckian curve of the chromaticity diagram.
As can be seen from fig. 3, the dimming curve corresponding to the first mixed spectrum (i.e., the original dimming curve) obtained in the above step 102 is a straight line (or an approximate straight line), and since the dimming curve is located below the planckian curve and the dimming curve has a certain gap with the planckian curve, if the first mixed spectrum is used as the illumination light, a problem that the difference between the first mixed spectrum and the natural white light is very large occurs, so that the technical scheme of the embodiment of the application compensates a specific spectrum into the first mixed spectrum, so that the coordinates of the compensated second mixed spectrum on the chromaticity diagram are located on the planckian curve on the chromaticity diagram, and the illumination effect almost consistent with the natural white light is simulated by using the second mixed spectrum as the illumination light.
In an embodiment of the present application, a specific spectrum is compensated in the first mixed spectrum in the following manner: and compensating at least one spectrum of the red primary color spectrum, the green primary color spectrum and the blue primary color spectrum into the first mixed spectrum according to a specific proportion to obtain a second mixed spectrum.
Here, the specific ratio includes: the second mixing ratio corresponding to the red primary color spectrum, the third mixing ratio corresponding to the green primary color spectrum, and the fourth mixing ratio corresponding to the blue primary color spectrum.
Here, the mixing ratio may also be referred to as a luminous flux ratio. Correspondingly, the second mixing ratio is the second luminous flux ratio, the third mixing ratio is the third luminous flux ratio, and the fourth mixing ratio is the fourth luminous flux ratio. As an example, the following table 2 gives the luminous flux ratios corresponding to the red primary color spectrum, the green primary color spectrum, and the blue primary color spectrum, respectively:
| third light source (Red primary spectrum) | Fourth light source (Green primary color spectrum) | Fifth light source (blue primary color spectrum) |
| 100% | 0% | 0% |
| 80% | 20% | 0% |
| 60% | 40% | 0% |
| 40% | 60% | 0% |
| 20% | 80% | 0% |
| 0% | 100% | 0% |
TABLE 2
The spectrally corresponding luminous flux is equal to the total luminous flux times the spectrally corresponding luminous flux ratio. Wherein the total luminous flux can be set as desired.
Compensating a specific spectrum into the first mixed spectrum, wherein the coordinate of the obtained second mixed spectrum on the chromaticity diagram is (x 2, y 2); wherein the coordinates (x 2, y 2) lie on the planckian curve.
Here, the coordinates of the second mixed spectrum on the chromaticity diagram are different at different specific ratios. The specific ratio is adjusted, and the locus formed by the coordinates of the second mixed spectrum on the chromaticity diagram is called a target dimming curve, and the target dimming curve is coincident or almost coincident with the planckian curve because the coordinates of the second mixed spectrum on the chromaticity diagram are located on the planckian curve.
In order to ensure that the coordinates of the second mixed spectrum on the chromaticity diagram are located on the planckian curve, the second mixed proportion corresponding to the compensated red primary spectrum, the third mixed proportion corresponding to the green primary spectrum and the fourth mixed proportion corresponding to the blue primary spectrum need to be determined. Two ways of determining these mixing ratios are given below.
Mode one
Determining the coordinates of the corresponding reference points on the Planckian curve on the chromaticity diagram according to the coordinates of the first mixed spectrum on the chromaticity diagram; and determining a second mixing proportion corresponding to the red primary color spectrum, a third mixing proportion corresponding to the green primary color spectrum and a fourth mixing proportion corresponding to the blue primary color spectrum according to the coordinates of the first mixing spectrum on the chromaticity diagram and the coordinates of the reference point on the chromaticity diagram.
In some embodiments, a correspondence table may be preset, where the correspondence table includes a correspondence between each point coordinate on the original dimming curve and each point coordinate on the planckian curve. And according to the corresponding relation table, combining the coordinates of the first mixed spectrum to determine the coordinates of the reference point corresponding to the Planckian curve.
In some embodiments, a correspondence rule may be preset, where the correspondence rule is: one point coordinate on the original dimming curve corresponds to one point coordinate on the planckian curve according to the abscissa invariant principle. And according to the corresponding rule, combining the coordinates of the first mixed spectrum to determine the coordinates of the reference point corresponding to the Planckian curve.
As shown in fig. 4, fig. 4 is a correspondence relationship between each point coordinate (solid circle) on the original dimming curve and each point coordinate (open circle) on the planckian curve.
Further, in some embodiments, a second setting operation is obtained, the second setting operation being used to adjust the first mixing ratio; wherein when the first mixing ratio is changed, the coordinates of the first mixing spectrum on the chromaticity diagram are changed; according to the changed coordinates of the first mixed spectrum on the chromaticity diagram, the coordinates of the corresponding reference points on the Planckian curve on the chromaticity diagram are redetermined; and updating the second mixing proportion corresponding to the red primary color spectrum, the third mixing proportion corresponding to the green primary color spectrum and the fourth mixing proportion corresponding to the blue primary color spectrum according to the changed coordinates of the first mixing spectrum on the chromaticity diagram and the redetermined coordinates of the reference point on the chromaticity diagram.
Mode two
In some embodiments, a third setting operation is obtained for setting a reference point on the planckian curve; determining a specific proportion according to the coordinates of the first mixed spectrum on the chromaticity diagram and the coordinates of the reference point on the chromaticity diagram; wherein the specific proportion comprises: the second mixing ratio corresponding to the red primary color spectrum, the third mixing ratio corresponding to the green primary color spectrum, and the fourth mixing ratio corresponding to the blue primary color spectrum.
In one particular embodiment, the relationship between the coordinates of the reference point on the planckian curve and the color temperature is shown in table 3 below:
| color temperature | x2 coordinates | y2 coordinates |
| 2700K | 0.4578 | 0.4101 |
| 3000K | 0.4339 | 0.4033 |
| 3500K | 0.4073 | 0.393 |
| 4000K | 0.3818 | 0.3797 |
| 4500K | 0.3613 | 0.367 |
| 5000K | 0.3446 | 0.3551 |
| 5700K | 0.3287 | 0.3425 |
| 6500K | 0.3123 | 0.3284 |
TABLE 3 Table 3
In the embodiment of the present application, the coordinates of the first mixed spectrum are (x 1, y 1), the coordinates of the red primary spectrum are (xR, yR), the coordinates of the green primary spectrum are (xG, yG), the coordinates of the blue primary spectrum are (xB, yB), and the coordinates of the reference point on the planckian curve are (x 2, y 2), then the mixed ratio of each spectrum can be determined according to the following formula:
wherein Y1 is the luminous flux ratio of the first mixed spectrum, Y2 is the luminous flux ratio of the red primary color spectrum, Y3 is the luminous flux ratio of the green primary color spectrum, and Y4 is the luminous flux ratio of the blue primary color spectrum.
As is clear from the above formula, the light flux ratios of the first mixed spectrum, the red primary color spectrum, the green primary color spectrum, and the blue primary color spectrum can be obtained as long as the coordinates of the first mixed spectrum, the coordinates of the red primary color spectrum, the coordinates of the green primary color spectrum, the coordinates of the blue primary color spectrum, and the coordinates of the reference point on the planckian curve are obtained. Namely, a second mixing ratio corresponding to the red primary color spectrum, a third mixing ratio corresponding to the green primary color spectrum, and a fourth mixing ratio corresponding to the blue primary color spectrum are obtained.
It should be noted that the above mixing ratio example satisfies the following principle:
when the second mixing proportion corresponding to the red primary color spectrum increases, the abscissa of the second mixing spectrum relative to the first mixing spectrum increases;
when the third mixing ratio corresponding to the green primary color spectrum increases, the ordinate of the second mixed spectrum with respect to the first mixed spectrum increases.
Through the scheme, the second mixing proportion corresponding to the red primary color spectrum, the third mixing proportion corresponding to the green primary color spectrum and the fourth mixing proportion corresponding to the blue primary color spectrum are respectively controlled, the compensation of the first mixing spectrum is realized, the coordinates of the second mixing spectrum obtained after the compensation are located on the Planckian curve, so that the color of the color-changing LED lamp is close to natural white light, and the color-changing LED lamp has very good lighting effect by taking the second mixing spectrum as lighting light, and meets the use requirements of users.
The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the scope of the technical concept of the present application, and all the simple modifications belong to the protection scope of the present application. For example, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further. As another example, any combination of the various embodiments of the present application may be made without departing from the spirit of the present application, which should also be regarded as the disclosure of the present application. For example, on the premise of no conflict, the embodiments described in the present application and/or technical features in the embodiments may be combined with any other embodiments in the prior art, and the technical solutions obtained after combination should also fall into the protection scope of the present application.
It should be further understood that, in the various method embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic of the processes, and should not constitute any limitation on the implementation process of the embodiments of the present application.
Fig. 5 is a schematic structural diagram of a dimming device according to an embodiment of the present application, where the dimming device is applied to a lighting apparatus, as shown in fig. 5, and the dimming device includes:
a first control module 501 for controlling the first light source to irradiate a first spectrum having a first color temperature and controlling the second light source to irradiate a second spectrum having a second color temperature; mixing the first spectrum with the first color temperature and the second spectrum with the second color temperature to obtain a first mixed spectrum, wherein the coordinates of the first mixed spectrum on a chromaticity diagram are (x 1, y 1); wherein the abscissa on the chromaticity diagram represents the proportion of the red primary color in the spectrum, and the ordinate on the chromaticity diagram represents the proportion of the green primary color in the spectrum, and the proportion of the blue primary color in the spectrum is related to the proportion of the red primary color and the proportion of the green primary color;
a second control module 502, configured to control the third light source to illuminate a red primary color spectrum, the fourth light source to illuminate a green primary color spectrum, and the fifth light source to illuminate a blue primary color spectrum; compensating at least one spectrum of the red primary color spectrum, the green primary color spectrum and the blue primary color spectrum into the first mixed spectrum according to a specific proportion to obtain a second mixed spectrum, wherein the abscissa of the second mixed spectrum on a chromaticity diagram is (x 2, y 2); wherein the coordinates (x 2, y 2) lie on the planckian curve on the chromaticity diagram.
In some embodiments, the apparatus further comprises:
an input module 503 for obtaining a first setting operation for setting a first mixing ratio of the first spectrum and the second spectrum;
the first control module 501 is specifically configured to mix the first spectrum with the first color temperature and the second spectrum with the second color temperature according to the first mixing ratio.
In some embodiments, the apparatus further comprises:
a processing module 504, configured to determine, according to the coordinates of the first mixed spectrum on the chromaticity diagram, coordinates of a reference point corresponding to the planckian curve on the chromaticity diagram; determining the specific proportion according to the coordinates of the first mixed spectrum on the chromaticity diagram and the coordinates of the reference point on the chromaticity diagram; wherein the specific ratio includes: the second mixing proportion corresponding to the red primary color spectrum, the third mixing proportion corresponding to the green primary color spectrum and the fourth mixing proportion corresponding to the blue primary color spectrum.
In some embodiments, the input module 503 is further configured to obtain a second setting operation, where the second setting operation is used to adjust the first mixing ratio; wherein when the first mixing proportion is changed, the coordinates of the first mixing spectrum on the chromaticity diagram are changed;
the processing module 504 is further configured to redetermine coordinates on the chromaticity diagram of the reference point corresponding to the planckian curve according to the coordinates on the chromaticity diagram of the changed first mixed spectrum; and updating the specific proportion according to the changed coordinates of the first mixed spectrum on the chromaticity diagram and the redetermined coordinates of the reference point on the chromaticity diagram.
In some embodiments, the input module 503 is further configured to obtain a third setting operation, where the third setting operation is used to set a reference point on the planckian curve;
the processing module 504 is further configured to determine the specific ratio according to the coordinate of the first mixed spectrum on the chromaticity diagram and the coordinate of the reference point on the chromaticity diagram; wherein the specific ratio includes: the second mixing proportion corresponding to the red primary color spectrum, the third mixing proportion corresponding to the green primary color spectrum and the fourth mixing proportion corresponding to the blue primary color spectrum.
In the above scheme, the specific ratio satisfies the following principle:
when the second mixing proportion corresponding to the red primary color spectrum is increased, the abscissa of the second mixing spectrum relative to the first mixing spectrum is increased;
when the third mixing proportion corresponding to the green primary color spectrum increases, the ordinate of the second mixing spectrum with respect to the first mixing spectrum increases.
In the above scheme, the coordinates of the first spectrum with the first color temperature on the chromaticity diagram and the coordinates of the second spectrum with the second color temperature on the chromaticity diagram are both located on the planckian curve.
It should be understood by those skilled in the art that the above description of the dimming device according to the embodiment of the present application may be understood with reference to the description of the dimming method according to the embodiment of the present application.
The processing module in the above-mentioned dimming device may be implemented by a processor, and it should be understood that the processor may be an integrated circuit chip with signal processing capability. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.
Based on the dimming device, the embodiment of the application further provides a lighting device. Fig. 6 is a schematic structural diagram of a lighting device according to an embodiment of the present application, as shown in fig. 6, the lighting device includes a light source assembly 610 and a dimming device 620, where the light source assembly 610 includes a first light source 611, a second light source 612, a third light source 613, a fourth light source 614 and a fifth light source 615; the dimming means 620 comprises a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory to cause the dimming means to perform the steps of the method as described above.
Fig. 7 is a schematic structural diagram of a lighting device according to an embodiment of the present application. The lighting device shown in fig. 7 comprises a processor 710, from which the processor 710 may call up and run a computer program to implement the method in an embodiment of the application.
Optionally, as shown in fig. 7, the lighting device may further comprise a memory 720. Wherein the processor 710 may call and run a computer program from the memory 720 to implement the method in an embodiment of the application.
Wherein the memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.
Optionally, as shown in fig. 7, the lighting device may further include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate with other devices, and in particular, may send information or data to other devices or receive information or data sent by other devices.
Among other things, transceiver 730 may include a transmitter and a receiver. Transceiver 830 may further include antennas, the number of which may be one or more.
The embodiment of the application also provides a computer readable storage medium for storing a computer program. The computer readable storage medium may be applied to the lighting device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding flow implemented by the lighting device in each method of the embodiment of the present application, which is not described herein for brevity.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. A method of dimming, the method comprising:
controlling the first light source to irradiate a first spectrum with a first color temperature, and controlling the second light source to irradiate a second spectrum with a second color temperature; the first light source is a warm white light source; the second light source is a positive white light source;
mixing the first spectrum with the first color temperature and the second spectrum with the second color temperature to obtain a first mixed spectrum, wherein the coordinates of the first mixed spectrum on a chromaticity diagram are (x 1, y 1); wherein the abscissa on the chromaticity diagram represents the proportion of the red primary color in the spectrum, and the ordinate on the chromaticity diagram represents the proportion of the green primary color in the spectrum, and the proportion of the blue primary color in the spectrum is related to the proportion of the red primary color and the proportion of the green primary color;
controlling the third light source to irradiate the red primary color spectrum, the fourth light source to irradiate the green primary color spectrum and the fifth light source to irradiate the blue primary color spectrum;
compensating at least one spectrum of the red primary color spectrum, the green primary color spectrum and the blue primary color spectrum into the first mixed spectrum according to a specific proportion to obtain a second mixed spectrum, wherein the coordinates of the second mixed spectrum on a chromaticity diagram are (x 2, y 2); wherein the coordinates (x 2, y 2) are located on the planckian curve on the chromaticity diagram; the method comprises the steps of presetting a corresponding relation table, wherein the corresponding relation table comprises corresponding relations between all point coordinates on an original dimming curve and all point coordinates on a Planckian curve; according to the corresponding relation table, the coordinates of the reference points corresponding to the Planckian curve are determined by combining the coordinates of the first mixed spectrum;
obtaining a second setting operation for adjusting the first mixing ratio; wherein when the first mixing proportion is changed, the coordinates of the first mixing spectrum on the chromaticity diagram are changed;
according to the changed coordinates of the first mixed spectrum on the chromaticity diagram, the coordinates of the corresponding reference points on the Planckian curve on the chromaticity diagram are redetermined;
updating the specific proportion according to the changed coordinates of the first mixed spectrum on the chromaticity diagram and the redetermined coordinates of the reference point on the chromaticity diagram;
obtaining a third setting operation, wherein the third setting operation is used for setting a reference point on the Planckian curve;
determining the specific proportion according to the coordinates of the first mixed spectrum on the chromaticity diagram and the coordinates of the reference point on the chromaticity diagram; wherein the specific ratio includes: the second mixing proportion corresponding to the red primary color spectrum, the third mixing proportion corresponding to the green primary color spectrum and the fourth mixing proportion corresponding to the blue primary color spectrum;
the mixing ratio of the individual spectra is determined according to the following formula:
，
wherein Y1 is the luminous flux ratio of the first mixed spectrum, Y2 is the luminous flux ratio of the red primary color spectrum, Y3 is the luminous flux ratio of the green primary color spectrum, Y4 is the luminous flux ratio of the blue primary color spectrum, the coordinates of the red primary color spectrum are (xR, yR), the coordinates of the green primary color spectrum are (xG, yG), and the coordinates of the blue primary color spectrum are (xB, yB).
2. The method of claim 1, wherein mixing the first spectrum having the first color temperature and the second spectrum having the second color temperature comprises:
obtaining a first setting operation for setting a first mixing ratio of the first spectrum and the second spectrum;
mixing the first spectrum with the first color temperature and the second spectrum with the second color temperature according to the first mixing proportion.
3. The method according to claim 2, wherein the method further comprises:
determining the coordinates of the corresponding reference points on the Planckian curve on the chromaticity diagram according to the coordinates of the first mixed spectrum on the chromaticity diagram;
determining the specific proportion according to the coordinates of the first mixed spectrum on the chromaticity diagram and the coordinates of the reference point on the chromaticity diagram; wherein the specific ratio includes: the second mixing proportion corresponding to the red primary color spectrum, the third mixing proportion corresponding to the green primary color spectrum and the fourth mixing proportion corresponding to the blue primary color spectrum.
4. A method according to any one of claims 1 to 3, characterized in that the specific ratio satisfies the following principle:
when the second mixing proportion corresponding to the red primary color spectrum is increased, the abscissa of the second mixing spectrum relative to the first mixing spectrum is increased;
when the third mixing proportion corresponding to the green primary color spectrum increases, the ordinate of the second mixing spectrum with respect to the first mixing spectrum increases.
5. A method according to any one of claims 1 to 3, characterized in that the coordinates of the first spectrum with the first color temperature on the chromaticity diagram and the coordinates of the second spectrum with the second color temperature on the chromaticity diagram are both located on the planckian curve.
6. A dimming device, the device comprising:
the first control module is used for controlling the first light source to irradiate a first spectrum with a first color temperature and controlling the second light source to irradiate a second spectrum with a second color temperature; the first light source is a warm white light source; the second light source is a positive white light source; mixing the first spectrum with the first color temperature and the second spectrum with the second color temperature to obtain a first mixed spectrum, wherein the coordinates of the first mixed spectrum on a chromaticity diagram are (x 1, y 1); wherein the abscissa on the chromaticity diagram represents the proportion of the red primary color in the spectrum, and the ordinate on the chromaticity diagram represents the proportion of the green primary color in the spectrum, and the proportion of the blue primary color in the spectrum is related to the proportion of the red primary color and the proportion of the green primary color;
the second control module is used for controlling the third light source to irradiate the red primary color spectrum, the fourth light source to irradiate the green primary color spectrum and the fifth light source to irradiate the blue primary color spectrum; compensating at least one spectrum of the red primary color spectrum, the green primary color spectrum and the blue primary color spectrum into the first mixed spectrum according to a specific proportion to obtain a second mixed spectrum, wherein the coordinates of the second mixed spectrum on a chromaticity diagram are (x 2, y 2); wherein the coordinates (x 2, y 2) are located on the planckian curve on the chromaticity diagram; the method comprises the steps of presetting a corresponding relation table, wherein the corresponding relation table comprises corresponding relations between all point coordinates on an original dimming curve and all point coordinates on a Planckian curve; according to the corresponding relation table, the coordinates of the reference points corresponding to the Planckian curve are determined by combining the coordinates of the first mixed spectrum; and
adjusting a first mixing ratio; wherein when the first mixing proportion is changed, the coordinates of the first mixing spectrum on the chromaticity diagram are changed; according to the changed coordinates of the first mixed spectrum on the chromaticity diagram, the coordinates of the corresponding reference points on the Planckian curve on the chromaticity diagram are redetermined; updating the specific proportion according to the changed coordinates of the first mixed spectrum on the chromaticity diagram and the redetermined coordinates of the reference point on the chromaticity diagram; setting a reference point on a Planckian curve; determining the specific proportion according to the coordinates of the first mixed spectrum on the chromaticity diagram and the coordinates of the reference point on the chromaticity diagram; wherein the specific ratio includes: the second mixing proportion corresponding to the red primary color spectrum, the third mixing proportion corresponding to the green primary color spectrum and the fourth mixing proportion corresponding to the blue primary color spectrum;
the mixing ratio of the individual spectra is determined according to the following formula:
，
wherein Y1 is the luminous flux ratio of the first mixed spectrum, Y2 is the luminous flux ratio of the red primary color spectrum, Y3 is the luminous flux ratio of the green primary color spectrum, Y4 is the luminous flux ratio of the blue primary color spectrum, the coordinates of the red primary color spectrum are (xR, yR), the coordinates of the green primary color spectrum are (xG, yG), and the coordinates of the blue primary color spectrum are (xB, yB).
7. A lighting apparatus comprising a light source assembly and a dimming device, the light source assembly comprising a first light source, a second light source, a third light source, a fourth light source, and a fifth light source; the dimming device comprises a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory to cause the dimming device to perform the method according to any of claims 1 to 5.
8. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 5.
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| CN107154247A (en) * | 2017-06-19 | 2017-09-12 | 广东欧珀移动通信有限公司 | Color temperature adjusting method, device and its equipment reconstructed based on rgb light spectrum energy |
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| CN103185220A (en) * | 2011-12-28 | 2013-07-03 | 鸿富锦精密工业（深圳）有限公司 | Color temperature adjusting method for solid state light-emitting device and illuminating device using color temperature adjusting method |
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