CN109673078B - Color temperature adjusting method and device and white light LED - Google Patents
Color temperature adjusting method and device and white light LED Download PDFInfo
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- CN109673078B CN109673078B CN201811536232.3A CN201811536232A CN109673078B CN 109673078 B CN109673078 B CN 109673078B CN 201811536232 A CN201811536232 A CN 201811536232A CN 109673078 B CN109673078 B CN 109673078B
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Abstract
The invention discloses a color temperature adjusting method and device and a white light LED, which are applied to the field of color temperature adjustment and the white light LED for outdoor illumination. In the embodiment of the application, the color temperature of the mixed white light can be adjusted by outputting one group of colored light and two groups of white light or mixing three groups of white light. Through the embodiment of the invention, the color coordinate of the mixed white light can fall in the MacAdam color area range of the black body locus, and the color tolerance is less than 7, so that the purpose that the mixed white light meets the standard requirement of energy star is achieved.
Description
Technical Field
The invention relates to the field of color temperature adjustment, in particular to a color temperature adjusting method and device and a white light LED.
Background
In recent years, the LED lighting industry is continuously developing, and LEDs gradually enter the field of general lighting due to the characteristics of high lighting effect, adjustable brightness, easy control, long service life, various colors and the like. With the development of technology and the improvement of the requirements of people on living quality, an intelligent LED lighting system with adjustable color temperature, high color rendering and more attention is paid to people. In the prior art, the color temperature of the mixed white light is usually adjusted by determining the brightness of one set of white light on the blackbody locus and then adjusting the brightness of the other set of white light on the blackbody locus.
In implementing the present invention, the inventors found that at least the following problems exist in the above related art: the color coordinates of the mixed white light will deviate outside the macadam color region of the blackbody locus, making the color tolerance greater than 7, not conforming to the color temperature tolerance range defined by the american energy star.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a color temperature adjusting method, device and white LED.
The purpose of the invention is realized by the following technical scheme:
in order to solve the above technical problem, in a first aspect, the present invention provides a color temperature adjusting method, including:
according to the color temperature of the required white light, a first group of white light and a second group of white light are obtained in a MacAdam color area of a black body locus by adjusting the brightness of the white light, wherein the color temperatures of the first group of white light and the second group of white light are respectively smaller than and larger than the color temperature of the required white light, and the ordinate of the first group of white light and the ordinate of the second group of white light on a color coordinate graph are smaller than or equal to the ordinate of a point on the black body locus on;
acquiring a set of colored light according to the color temperature of the required white light, wherein the ordinate of the set of colored light on the color coordinate graph is larger than the ordinate of a point on a black body locus on the same abscissa, and the abscissa of the set of colored light is between the abscissas of the first set of white light and the second set of white light;
the first group of white light, the second group of white light and the group of colored light are output through three groups of color channels of the white light LED respectively, the required white light is obtained by mixing the first group of white light, the second group of white light and the group of colored light, the required white light falls in a MacAdam color zone of a black body locus, and the color tolerance of the required white light is less than 7.
Optionally, the color temperature of the first white light group is smaller than that of the second white light group, the color temperature of the first white light group and the color temperature of the second white light group are both within the defined color temperature range of energy star, and the color tolerance of the first white light group, the second white light group and the colored light group is smaller than 7.
In order to solve the above technical problem, in a second aspect, the present invention provides a color temperature adjusting method, including:
according to the color temperature of the required white light, a first group of white light and a second group of white light are obtained in a MacAdam color area of a black body locus by adjusting the brightness of the white light, wherein the color temperatures of the first group of white light and the second group of white light are respectively smaller than and larger than the color temperature of the required white light, and the ordinate of the first group of white light and the ordinate of the second group of white light on a color coordinate graph are smaller than or equal to the ordinate of a point on the black body locus on;
obtaining a third group of white light by adjusting the brightness of the white light in a MacAdam color area of a black body locus according to the color temperature of the required white light, wherein the ordinate of the third group of white light on the color coordinate graph is larger than the ordinate of a point on the black body locus on the same abscissa, and the color temperature of the third group of white light is within a preset range of the average value of the color temperatures of the first group of white light and the second group of white light;
the first group of white light, the second group of white light and the third group of white light are output through three groups of color channels of the white light LED respectively, the first group of white light, the second group of white light and the third group of white light are mixed to obtain the required white light, the required white light falls in a MacAdam color region of a black body locus, and the color tolerance of the required white light is smaller than 7.
Optionally, the color temperature of the first group of white lights is less than the color temperature of the second group of white lights, the color temperature of the first group of white lights and the color temperature of the second group of white lights are both within the defined color temperature range of energy star, and the color tolerance of the first group of white lights, the color tolerance of the second group of white lights and the color tolerance of the third group of white lights are all less than 7.
In order to solve the above technical problem, in a third aspect, an embodiment of the present invention provides a color temperature adjustment device applied to a white LED, where the color temperature adjustment device includes:
the acquisition module is used for acquiring a first group of white lights and a second group of white lights which have color temperatures respectively smaller than and larger than the color temperature of the required white light in a MacAdam color area of a black body locus by adjusting the brightness of the white light according to the color temperature of the required white light, wherein the ordinate of each of the first group of white lights and the ordinate of each of the second group of white lights on a color coordinate graph is smaller than or equal to the ordinate of a point on the black body locus on the same abscissa;
the acquisition module is further used for acquiring a group of colored lights according to the color temperature of the required white light, the ordinate of the group of colored lights on the color coordinate graph is larger than the ordinate of a point on a black body locus on the same abscissa, and the abscissa of the group of colored lights is between the abscissas of the first group of white lights and the second group of white lights;
and the output module is used for outputting the first group of white light, the second group of white light and the group of colored light through three groups of color channels of the white light LED respectively, the first group of white light, the second group of white light and the group of colored light are mixed to obtain the required white light, the required white light falls in a MacAdam color region of a black body locus, and the color tolerance of the required white light is less than 7.
Optionally, the color temperature of the first white light group is smaller than that of the second white light group, the color temperature of the first white light group and the color temperature of the second white light group are both within the defined color temperature range of energy star, and the color tolerance of the first white light group, the second white light group and the colored light group is smaller than 7.
In order to solve the above technical problem, in a fourth aspect, an embodiment of the present invention provides a color temperature adjustment device applied to a white LED, where the color temperature adjustment device includes:
the acquisition module is used for acquiring a first group of white lights and a second group of white lights which have color temperatures respectively smaller than and larger than the color temperature of the required white light in a MacAdam color area of a black body locus by adjusting the brightness of the white light according to the color temperature of the required white light, wherein the ordinate of each of the first group of white lights and the ordinate of each of the second group of white lights on a color coordinate graph is smaller than or equal to the ordinate of a point on the black body locus on the same abscissa;
the acquisition module is further used for acquiring a third group of white light in a MacAdam color area of a black body locus by adjusting the brightness of the white light according to the color temperature of the required white light, wherein the ordinate of the third group of white light on the color coordinate graph is larger than the ordinate of a point on the black body locus on the same abscissa, and the color temperature of the third group of white light is within a preset range of the average value of the color temperatures of the first group of white light and the second group of white light;
and the output module is used for outputting the first group of white light, the second group of white light and the third group of white light through three groups of color channels of the white light LED respectively, the first group of white light, the second group of white light and the third group of white light are mixed to obtain the required white light, the required white light falls in a MacAdam color region of a black body locus, and the color tolerance of the required white light is less than 7.
Optionally, the color temperature of the first group of white lights is less than the color temperature of the second group of white lights, the color temperature of the first group of white lights and the color temperature of the second group of white lights are both within the defined color temperature range of energy star, and the color tolerance of the first group of white lights, the color tolerance of the second group of white lights and the color tolerance of the third group of white lights are all less than 7.
In order to solve the above technical problem, in a fifth aspect, an embodiment of the present invention provides a white LED, including:
the three color channels are respectively used for outputting two groups of white light with different color temperatures and one group of colored light; and the number of the first and second groups,
a microcontroller capable of controlling the illumination of the three sets of color channels; wherein,
the microcontroller is configured to perform the color temperature adjustment method according to the first aspect when the three groups of color channels are controlled to emit light.
In order to solve the above technical problem, in a sixth aspect, an embodiment of the present invention provides a white LED, including:
the three groups of color channels are respectively used for outputting three groups of white lights with different color temperatures; and the number of the first and second groups,
a microcontroller capable of controlling the illumination of the three sets of color channels; wherein,
the microcontroller is configured to perform the color temperature adjustment method according to the second aspect when the three groups of color channels are controlled to emit light.
In order to solve the above technical problem, in a seventh aspect, an embodiment of the present application provides a storage medium, where the storage medium stores executable instructions, and the executable instructions, when executed by a microcontroller, cause the microcontroller to execute the color temperature adjustment method according to the first aspect.
In order to solve the above technical problem, in an eighth aspect, an embodiment of the present application provides a storage medium, where the storage medium stores executable instructions, and the executable instructions, when executed by a microcontroller, cause the microcontroller to execute the color temperature adjustment method according to the second aspect.
In order to solve the above technical problem, in a ninth aspect, the present application further provides a program product including a program stored on a storage medium, where the program includes program instructions that, when executed by a microcontroller, cause the microcontroller to execute the color temperature adjustment method according to the first aspect.
In order to solve the above technical problem, in a tenth aspect, an embodiment of the present application further provides a program product, which includes a program stored on a storage medium, the program including program instructions, when executed by a microcontroller, cause the microcontroller to execute the color temperature adjustment method according to the second aspect.
Compared with the prior art, the invention has the beneficial effects that: in contrast to the prior art, embodiments of the present invention provide a color temperature adjustment method, device and white LED; the color temperature of the mixed white light can be adjusted by outputting one group of colored light and two groups of white light or mixing three groups of white light. By the embodiment of the invention, the color coordinate of the mixed white light can fall within the MacAdam color area of the blackbody locus, and the color tolerance is less than 7.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to figures in the drawings, and not by way of limitation, in which elements having the same reference numeral designations in the drawings are represented by like elements, and in which the drawings are not to scale unless otherwise specified.
Fig. 1 is a schematic flow chart of a color temperature adjustment method according to a first embodiment of the present invention;
FIG. 2 is a color coordinate diagram of two sets of white light, one set of colored light, and the required white light and the black body locus in the method according to the first embodiment of the present invention;
fig. 3 is a schematic flow chart of a color temperature adjustment method according to a second embodiment of the present invention;
FIG. 4 is a color coordinate diagram of three sets of white light, required white light, and black body locus in the method of the second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a color temperature adjustment apparatus according to a third embodiment of the present invention;
fig. 6 is a schematic structural diagram of a color temperature adjustment apparatus according to a fourth embodiment of the present invention;
fig. 7 is a schematic structural diagram of a white LED provided in the fifth embodiment of the present invention;
fig. 8 is a schematic structural diagram of a white LED provided in the sixth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It should be noted that, if not conflicted, the various features of the embodiments of the present application may be combined with each other within the scope of protection of the present application. Additionally, while functional block divisions are performed in apparatus schematics, with logical sequences shown in flowcharts, in some cases, steps shown or described may be performed in sequences other than block divisions in apparatus or flowcharts.
The embodiment of the application provides a color temperature adjusting method and device and a white light LED. The color temperature adjusting method is a technical scheme of mixed white light which is obtained by acquiring two groups of white light and one group of colored light with different color temperatures on a black track curve on a color coordinate based on a chromaticity diagram and a color coordinate diagram, or respectively outputting three groups of white light for mixing after three groups of white light, and mixed white light which is in a color temperature tolerance range defined by the energy star of the United states can be obtained after three groups of light with different color temperatures are mixed in the embodiment of the application.
The color temperature adjusting method provided by the embodiment of the application can be applied to the technical field of color temperature adjustment, such as LED lamps for indoor and outdoor illumination, such as LED lamp strips and LED surface light emitting tubes. For example, the color temperature adjustable LED bedside lamp can be adjusted according to the needs in different use environments, such as a warm light mode before falling asleep, a cool light mode in a working environment, and the like, based on the inventive concept of the color temperature adjusting method provided in the embodiments of the present application. The color temperature adjusting method provided in the embodiment of the present application can be executed by any type of microcontroller with computing and controlling capabilities, such as an MCU.
Specifically, the embodiments of the present application will be further explained below with reference to the drawings.
Example one
Fig. 1 is a schematic flow chart of a color temperature adjustment method provided in an embodiment of the present application, and fig. 2 is a color coordinate relationship diagram of two sets of white light, one set of colored light, and a desired white light and a black body locus in the color temperature adjustment method, please refer to fig. 1 and fig. 2, the method includes, but is not limited to, the following steps:
step 110: according to the color temperature of the required white light, a first group of white light and a second group of white light are obtained in a MacAdam color area of a black body locus by adjusting the brightness of the white light, wherein the color temperatures of the first group of white light and the second group of white light are respectively smaller than or equal to the color temperature of the required white light, and the ordinate of the first group of white light and the ordinate of the second group of white light on a color coordinate graph are smaller than or equal to the ordinate of a point on the black body locus on.
The color temperature of the required white light can be selected according to requirements, and the requirement that the color coordinate of the white light falls in the MacAdam color area of the black body locus can be met.
The color temperature A of the first group of white lights is smaller than the color temperature B of the second group of white lights, the color temperatures of the first group of white lights and the second group of white lights are within the defined color temperature range of energy star, and the color tolerance SDCM of the first group of white lights and the second group of white lights is smaller than 7.
In an embodiment of the present application, the color temperatures of the first group of white lights and the second group of white lights are two points in the macadam color area of the black body locus curve on the color coordinate graph, and the ordinate on the color coordinate graph is less than or equal to the ordinate of the point on the black body locus on the same abscissa.
The first group of white lights and the second group of white lights are any color temperatures within the range of color temperatures defined by energy star, and as the color temperature A of the first group of white lights is smaller than the color temperature B of the second group of white lights, the highest value of the color temperature B of the second group of white lights can be 6500K, the lowest value of the color temperature A of the first group of white lights can be 2200K, and the color temperature A and the color temperature B can be selected from 2200K to 6500K according to mixed white lights, namely the color temperature E of the required white lights. And because each color or each color temperature can find corresponding specific coordinates on the color coordinate curve, the color temperature A and the color temperature B can be selected according to requirements under the condition that the color temperature E of the required white light is known.
The color tolerances SDCM of the first and second sets of white light also need to be within the range specified by the energy star, i.e. both need to be less than 7. For example, when the color temperature a of the first group of white lights is 2200K, the index requirements are as follows: 2238 +/-102; when the color temperature B of the second group of white light is 6500K, the index requirements are as follows: 6532+/-510.
In practical applications, values of the color temperatures a and B may be set according to needs and regulations, and the embodiment of the present application does not specifically limit the above.
Step 120: and acquiring a set of colored light according to the color temperature of the required white light, wherein the ordinate of the set of colored light on the color coordinate graph is larger than the ordinate of a point on a black body locus on the same abscissa, and the abscissa of the set of colored light is between the abscissas of the first set of white light and the second set of white light.
The set of colored light may be a set of red, green or blue light and the color tolerance SDCM of the set of colored light is less than 7.
In an embodiment of the application, the color temperature C of the set of colored lights is a point on the color coordinate diagram above the black body locus curve and is not within the macadam range of the black body locus curve, that is, the set of colored lights appears to the unaided human eye as a green or yellow or light close to the two colors, and the abscissa on the color coordinate diagram is between the abscissas of the first set of white lights and the second set of white lights. The color tolerance SDCM of the set of colored lights also needs to be less than 7 in order to reduce the color tolerance of the final mixed white light.
In practical applications, the value of the color temperature C may be set according to needs and regulations, for example, when an environment with a warmer color tone is required, the color temperature C may select a color with a lower color temperature, and when an environment with a cooler color tone is required, the color temperature C may select a color with a higher color temperature.
Step 130: the first group of white light, the second group of white light and the group of colored light are output through three groups of color channels of the white light LED respectively, the required white light is obtained by mixing the first group of white light, the second group of white light and the group of colored light, the required white light falls in a MacAdam color zone of a black body locus, and the color tolerance of the required white light is less than 7.
In the embodiment of the present application, the required white light (color temperature E), that is, a mixed white light selected by the user as required by the selection of the user, can be obtained by mixing the first set of white light, the second set of white light, and the set of colored lights in steps 110 and 120.
In the embodiment of the present application, since the brightness of the plurality of lights of different color temperatures before mixing is changed, the light power distribution curve of the plurality of lights of different color temperatures can be changed, thereby changing the light power distribution curve of the mixed light of the plurality of lights of different color temperatures, and determining the color temperature value of the mixed light. Therefore, in the embodiment of the application, a user can calculate the brightness of the first group of white light, the second group of white light and the group of colored light to reach the target color temperature according to the color temperature E of the required white light, and adjust the brightness of the first group of white light, the second group of white light and the group of colored light to the preset brightness, so that the first group of white light, the second group of white light and the group of colored light can reach the color temperature a, the color temperature B and the color temperature C respectively, and finally the required white light is obtained.
In practical applications, the required white light may be selected according to requirements, so as to determine a color temperature E of the required white light, and thereby determine color temperatures a, B, and C of the first group of white light, the second group of white light, and the group of colored light, respectively, so as to enable the first group of white light, the second group of white light, and the group of colored light to be output through three color channels of the white light LED, respectively, and to be mixed to obtain the required white light. For example, when a required white light with a color temperature of about 4000K needs to be obtained, two groups of white lights with color temperatures of 2200K and 6500K are obtained by adjusting the brightness of the white light in a MacAdam color region of a black body locus, and then a group of colored lights are obtained according to the color temperature of the required white light, the ordinate of the group of colored lights on the color coordinate graph is larger than the ordinate of a point on the black body locus on the same abscissa, and the abscissa of the group of colored lights on the color coordinate graph is between the abscissa of the 2200K white light and the abscissa of the 6500K white light, so that the two groups of white lights and the group of colored lights are output to be mixed to obtain the required white light of about 4000K.
Through the color temperature adjusting method provided by the embodiment, the inventor can change the color temperatures of the two groups of white lights and the color temperature of the group of colored lights, so that the final color temperature point of the mixed white light after mixing and adjusting falls within the range of the color coordinate region of the black body locus curve, namely within the macadam color region of the black body locus curve, namely SDCM <7, thereby realizing that the color temperatures are kept consistent and meet the requirements of the standard of American energy star on the color temperatures.
Example two
Fig. 3 is a schematic flowchart of a color temperature adjustment method provided in an embodiment of the present application, and fig. 4 is a color coordinate diagram of three groups of white light, a required white light and a black body locus in the color temperature adjustment method, please refer to fig. 3 and fig. 4, where the method includes, but is not limited to, the following steps:
step 210: according to the color temperature of the required white light, a first group of white light and a second group of white light are obtained in a MacAdam color area of a black body locus by adjusting the brightness of the white light, wherein the color temperatures of the first group of white light and the second group of white light are respectively smaller than or equal to the color temperature of the required white light, and the ordinate of the first group of white light and the ordinate of the second group of white light on a color coordinate graph are smaller than or equal to the ordinate of a point on the black body locus on.
The color temperature A of the first group of white lights is smaller than the color temperature B of the second group of white lights, the color temperatures of the first group of white lights and the second group of white lights are within the defined color temperature range of energy star, and the color tolerance SDCM of the first group of white lights and the second group of white lights is smaller than 7.
In an embodiment of the present application, the color temperatures of the first group of white lights and the second group of white lights are two points in the macadam color area of the black body locus curve on the color coordinate graph, and the ordinate on the color coordinate graph is less than or equal to the ordinate of the point on the black body locus on the same abscissa.
The first group of white lights and the second group of white lights are any color temperatures within the range of the color temperatures defined by energy star, and as the color temperature A of the first group of white lights is smaller than the color temperature B of the second group of white lights, the highest value of the color temperature B of the second group of white lights can be 6500K, the lowest value of the color temperature A of the first group of white lights can be 2200K, and the color temperature A and the color temperature B can be selected from 2200K to 6500K according to the mixed white lights, namely the color temperature G of the required white lights. And because each color or each color temperature can find corresponding specific coordinates on the color coordinate curve, the color temperature A and the color temperature B can be selected according to requirements under the condition that the color temperature G of the required white light is known.
The color tolerances SDCM of the first and second sets of white light also need to be within the range specified by the energy star, i.e. both need to be less than 7. For example, when the color temperature a of the first group of white lights is 2200K, the index requirements are as follows: 2238 +/-102; when the color temperature B of the second group of white light is 6500K, the index requirements are as follows: 6532+/-510.
In practical applications, values of the color temperatures a and B may be set according to needs and regulations, and the embodiment of the present application does not specifically limit the above.
Step 220: and obtaining a third group of white light by adjusting the brightness of the white light in a MacAdam color area of a black body locus according to the color temperature of the required white light, wherein the ordinate of the third group of white light on the color coordinate graph is greater than the ordinate of a point on the black body locus on the same abscissa, and the color temperature of the third group of white light is within the preset range of the average value of the color temperatures of the first group of white light and the second group of white light.
The color temperature T of the white light of the third group is larger than the color temperature A of the white light of the first group, the color temperature T of the white light of the third group is smaller than the color temperature B of the white light of the second group, and the color tolerance SDCM of the white light of the third group is smaller than 7.
In an embodiment of the present application, the color temperature T of the third group of white lights is a point in the macadam color region of the black body locus curve on the color coordinate diagram, and the ordinate on the color coordinate diagram is greater than the ordinate of a point on the black body locus curve on the same abscissa.
The third group of white light is any color temperature in the color temperature range defined by energy star, and the color temperature T is larger than the color temperature A of the first group of white light and smaller than the color temperature B of the second group of white light, namely the maximum value of the color temperature T of the third group of white light is smaller than 6500K, the minimum value of the color temperature T of the third group of white light is larger than 2200K, and the color temperature T can be selected from 2200K to 6500K according to the mixed white light, namely the color temperature G of the required white light. Since each color or each color temperature can find the corresponding specific coordinates on the color coordinate curve, the color temperature T can be selected as desired given the desired color temperature G of the white light.
The color tolerance SDCM of the third set of white light also needs to be within the range specified by the energy star, i.e. both need to be less than 7. For example, the color temperature T of the third group of white lights is 4000K, and the index requirements are as follows: 3985+/-275.
In practical applications, the value of the color temperature T may be set according to needs and regulations, and the embodiment of the present application does not specifically limit the above.
Step 230: the first group of white light, the second group of white light and the third group of white light are output through three groups of color channels of the white light LED respectively, the first group of white light, the second group of white light and the third group of white light are mixed to obtain the required white light, the required white light falls in a MacAdam color region of a black body locus, and the color tolerance of the required white light is smaller than 7.
In the embodiment of the present application, the required white light can be obtained by mixing the first, second and third white lights in steps 210 and 220, and the required white light (color temperature G) is a mixed white light selected by the user.
In the embodiment of the present application, since the brightness of the light mixed with the plurality of different color temperatures is changed, the light power distribution curve of the light of the plurality of different color temperatures can be changed, thereby changing the light power distribution curve of the mixed light of the plurality of different color temperatures, and determining the color temperature value of the mixed light. Therefore, in the embodiment of the application, a user can calculate the brightness of the first group of white light, the second group of white light and the third group of white light which are to reach the target color temperature according to the color temperature G of the required white light, and adjust the brightness of the first group of white light, the second group of white light and the third group of white light to the preset brightness, so that the first group of white light, the second group of white light and the third group of white light can reach the color temperature a, the color temperature B and the color temperature T respectively, and the required white light is finally obtained.
In practical application, the required white light may be selected according to requirements, so as to determine a color temperature G of the required white light, and thereby determine a color temperature a, a color temperature B, and a color temperature T of the first group of white light, the second group of white light, and the third group of white light, respectively, so that the first group of white light, the second group of white light, and the third group of white light can be mixed to obtain the required white light through the three groups of color channels of the white light LED, respectively. For example, when a required white light with a color temperature of about 4000K needs to be obtained, two groups of white lights with color temperatures of 2200K and 6500K are obtained by adjusting the brightness of the white light in a macadam color region of a black body locus, and then a third group of white lights is obtained according to the color temperature of the required white light, wherein the ordinate of the third group of white lights on a color coordinate graph is larger than the ordinate of a point on the black body locus on the same abscissa, and the color temperature of the third group of white lights on the color coordinate graph is within a preset range of the average value of the color temperature of the 2200K white light and the color temperature of the 6500K white light, wherein the preset range can be +/-300K, and the three groups of white lights are output to obtain the required white light of about 4000K by mixing.
Through the color temperature adjusting method provided by the embodiment, the inventor can make the final color temperature point of the mixed white light after mixing adjustment fall within the range of the color coordinate region of the black body locus curve, namely within the macadam color region of the black body locus curve, namely SDCM <7, by changing the color temperatures of the three groups of white light, so that the color temperature is kept consistent and meets the requirements of the standard of American energy star on the color temperature.
EXAMPLE III
Fig. 5 is a schematic structural diagram of a color temperature adjustment device according to a third embodiment of the present invention, please refer to fig. 5, in which the device 30 includes but is not limited to: the acquisition module 310 outputs the module 320.
The obtaining module 310 is configured to obtain, according to the color temperature E of the required white light, specific parameters of a first group of white lights with a color temperature a and a second group of white lights with a color temperature B, which are respectively smaller and larger than the color temperature E of the required white light, by adjusting the brightness of the white light, and specific parameters of a group of colored lights with a color temperature C.
The first group of white lights and the second group of white lights are in the MacAdam color area of the black body locus, the ordinate of the first group of white lights and the ordinate of the second group of white lights on the color coordinate graph are both less than or equal to the ordinate of the point on the black body locus on the same abscissa, and the color temperature A of the first group of white lights is less than the color temperature B of the second group of white lights.
The ordinate of the group of colored light on the color coordinate graph is larger than the ordinate of a point on a black body locus on the same abscissa, and the abscissa of the group of colored light is between the abscissas of the first group of white light and the second group of white light.
In practical application, a user may calculate and determine color temperatures a, B, and C of the first group of white light, the second group of white light, and the group of color light by using a computer through a multi-color LED brightness mixing method according to a color temperature T of an actually required white light, so that the first group of white light, the second group of white light, and the group of color light can be mixed to obtain the required white light by respectively outputting the first group of white light, the second group of white light, and the group of color light through three color channels of a white light LED.
Wherein the output module 320 is configured to output the first set of white light through a first set of color channels of the white light LEDs. The output module 320 obtains specific parameters of the ratios and brightness of the specific R, G, B three colors of the first group of white light with the color temperature a from the obtaining module 310, and outputs data to the first group of color channels to emit light with the target color temperature.
The output module 320 is further configured to output the second set of white light through a second set of color channels of the white light LEDs. The output module 320 obtains specific parameters of the ratios and brightness of the specific R, G, B three colors of the second group of white light with the color temperature B from the obtaining module 310, and outputs data to the second group of color channels to emit light with the target color temperature.
The output module 320 is further configured to output the set of colored lights through a third set of color channels of the white light LEDs. The output module 320 obtains specific parameters of the ratios and brightness of specific R, G, B colors of a set of colored lights with color temperature C from the obtaining module 310, and outputs the data to a third set of color channels to emit light with a target color temperature.
By the color temperature adjusting device provided in the embodiment, the inventor can input specific parameters of a required white light (color temperature E) to the obtaining module 310 of the color temperature adjusting device, or respectively input specific parameters of a first group of white lights (color temperature a), a second group of white lights (color temperature B) and a group of color lights (color temperature C) to the obtaining module 310 of the color temperature adjusting device, and then output the first group of white lights, the second group of white lights and the group of color lights from the output module 320, so as to obtain a mixed white light, wherein a final color temperature point of the mixed white light falls within a macadam color zone of a black body locus curve, a color tolerance SDCM is less than 7, and the white light after color mixing adjustment meets the requirement standard of energy star on color temperature.
Example four
Fig. 6 is a schematic structural diagram of a color temperature adjustment device according to a fourth embodiment of the present invention, please refer to fig. 6, in which the device 40 includes but is not limited to: an acquisition module 410 and an output module 420.
The obtaining module 410 is configured to obtain, according to a color temperature G of a required white light, specific parameters of a first group of white lights having a color temperature a and a second group of white lights having a color temperature B, which are smaller than and larger than the color temperature of the required white light, respectively, by adjusting brightness of the white light, and specific parameters of a third group of white lights having a color temperature T near a middle value of the color temperature of the first group of white lights and the color temperature of the second group of white lights.
The first group of white lights and the second group of white lights are in the MacAdam color area of the black body locus, the ordinate of the first group of white lights and the ordinate of the second group of white lights on the color coordinate graph are both less than or equal to the ordinate of the point on the black body locus on the same abscissa, and the color temperature A of the first group of white lights is less than the color temperature B of the second group of white lights.
The third group of white light is in the MacAdam color area of the black body locus, the ordinate of the third group of white light on the color coordinate graph is larger than the ordinate of the point on the black body locus on the same abscissa, and the color temperature G of the third group of white light is larger than the color temperature A of the first group of white light and smaller than the color temperature B of the second group of white light.
In practical application, a user may calculate and determine the color temperature a, the color temperature B, and the color temperature T of the first group of white light, the second group of white light, and the third group of white light by using a computer through a multi-color LED brightness mixing method according to the color temperature G of the white light actually required, so that the first group of white light, the second group of white light, and the third group of white light output through three color channels of the white light LED can be mixed to obtain the required white light, which is not specifically limited in the embodiment of the present application.
Wherein the output module 420 is configured to output the first set of white light through a first set of color channels of the white light LEDs. The output module 420 obtains specific parameters of the ratios and brightness of the specific R, G, B three colors of the first group of white light with color temperature a from the obtaining module 410, and outputs data to the first group of color channels to emit light with target color temperature.
The output module 420 is further configured to output the second set of white light through a second set of color channels of the white light LEDs. The output module 420 obtains specific parameters of the ratios and brightness of the specific R, G, B three colors of the second group of white light with the color temperature B from the obtaining module 410, and outputs the data to the second group of color channels to emit light with the target color temperature.
The output module 420 is further configured to output the third set of white light through a third set of color channels of the white light LEDs. The output module 420 obtains specific parameters of the ratios and brightness of the three colors R, G, B of the third group of white light with color temperature T from the obtaining module 410, and outputs the data to the third group of color channels to emit light with target color temperature.
Through the color temperature adjusting device provided in the embodiment, the inventor can input specific parameters of required white light (color temperature G) to the obtaining module 410 of the color temperature adjusting device, or respectively input specific parameters of a first group of white light (color temperature a), a second group of white light (color temperature B) and a third group of white light (color temperature T) to the obtaining module 410 of the color temperature adjusting device, and then output the first group of white light, the second group of white light and the third group of white light from the output module 420, so as to obtain mixed white light, wherein a final color temperature point of the mixed white light falls in a macadam color region of a black body locus curve, a color tolerance SDCM is less than 7, and the white light after color mixing adjustment meets the requirement standard of energy star on color temperature.
EXAMPLE five
Fig. 7 is a schematic structural diagram of a white light LED according to a fifth embodiment of the present invention, where the white light LED may be an LED lamp that includes more than three color channels, and each color channel can realize various color temperatures and adjust mixed light to be white light, for example, some common LED lamps for white outdoor lighting. And the white light LED can execute a color temperature adjusting method provided in the first embodiment of the application.
Specifically, referring to fig. 7, the white LED50 includes: a microcontroller 540, a first set of color channels 510, a second set of color channels 520, and a third set of color channels 530. The three groups of color channels are respectively used for outputting two groups of white lights with different color temperatures and one group of colored lights.
One or more light emitting diodes are respectively installed in the first group of color channels 510, the second group of color channels 520, and the third group of color channels 530, if one light emitting diode is installed in each group of color channels, the light emitting diode emits light with a target color temperature, and if a plurality of light emitting diodes are installed in each group of color channels, the plurality of light emitting diodes in each group of color channels emit light with the same target color temperature or light with a target color temperature close to the target color temperature.
Wherein the first set of color channels 510 obtains specific parameters of a first set of white light having a color temperature a from the microcontroller 540 and emits the white light having the color temperature a from one or more light emitting diodes disposed in the first set of color channels 510. The second set of color channels 520 obtain specific parameters of a second set of white light having a color temperature B from the microcontroller 540 and emit white light having a color temperature B from one or more leds disposed in the second set of color channels 520. The third set of color channels 530 obtains specific parameters of a set of colored light of color temperature C from the microcontroller 540 and emits the colored light of color temperature C from one or more leds disposed in the third set of color channels 530. Finally, the light emitted by the three groups of color channels is mixed to obtain the required white light with the color temperature E.
The micro-controller 540 is a microcomputer for setting various parameters, obtaining various parameters and outputting corresponding signals to control the three color channels to emit three groups of lights with different color temperatures. The microcontroller 540 is provided with modules corresponding to the color temperature adjusting method in the third embodiment, such as the obtaining module 310 and the output module 320 in fig. 5. The microcontroller 540 obtains system or human-defined parameters through the obtaining module 310, including but not limited to specific parameters of the desired white light with color temperature E (if the specific parameters of the desired white light with color temperature E are directly obtained, it is necessary for the microcontroller 540 to obtain the specific parameters of the first group of white light, the second group of white light, and the set of color light after internal calculation before outputting), or specific parameters of the first group of white light with color temperature a and/or specific parameters of the second group of white light with color temperature B and/or specific parameters of the set of color light with color temperature C. The above specific parameters are calculated by the microcontroller 540 internally or directly obtained from an external computer, so as to control the output module 420 to output three sets of signals corresponding to lights with different color temperatures, and thus control the first set of color channels 510, the second set of color channels 520 and the third set of color channels 530 to output a first set of white light, a second set of white light and a set of colored light, respectively. The microcontroller 540 can execute various functional applications and data processing of the three color temperature adjustment devices of the above embodiment, so as to implement the color temperature adjustment method of the first embodiment.
Also provided in embodiments herein is a storage medium storing executable instructions for execution by one or more processors, such as: the microcontroller 540 of fig. 7 may cause the one or more processors to execute the color temperature adjustment method of the first embodiment of the method, for example, execute the above-described method steps 110 to 130 of fig. 1, and implement the functions of the blocks 310 to 320 of fig. 5.
The above-described embodiments are illustrative, wherein the microcontroller 540, the first set of color channels 510, the second set of color channels 520, and the third set of color channels 530 may be one or more sets, the microcontroller 540, the first set of color channels 510, the second set of color channels 520, and the third set of color channels 530 illustrated as separate components may or may not be integrally mounted, and the microcontroller 540, the first set of color channels 510, the second set of color channels 520, and the third set of color channels 530 may be directly connected together using ports or pins, may be remotely connected through electrical or signals, may be located in one place, or may be distributed in different places. Some or all of the modules of the white light LED can be selected according to actual needs to achieve the purpose of the embodiment.
EXAMPLE six
Fig. 8 is a schematic structural diagram of a white light LED according to a sixth embodiment of the present invention, where the white light LED may be an LED lamp that includes more than three color channels, and each color channel can realize various color temperatures and adjust mixed light to be white light, for example, some common LED lamps for white outdoor lighting. And the white light LED can perform a color temperature adjustment method provided in the second embodiment of the present application.
Specifically, referring to fig. 8, the white LED60 includes: a microcontroller 640, a first set of color channels 610, a second set of color channels 620, and a third set of color channels 630. The three groups of color channels are respectively used for outputting three groups of white lights with different color temperatures.
One or more light emitting diodes are respectively installed in the first group of color channels 610, the second group of color channels 620 and the third group of color channels 630, if one light emitting diode is installed in each group of color channels, the light emitting diode emits light with a target color temperature, and if a plurality of light emitting diodes are installed in each group of color channels, the plurality of light emitting diodes in each group of color channels emit light with the same target color temperature or light with a target color temperature close to the target color temperature.
Wherein the first set of color channels 610 obtains specific parameters of a first set of white light having a color temperature a from the microcontroller 640, and the white light having the color temperature a is emitted by one or more light emitting diodes disposed in the first set of color channels 610. The second set of color channels 620 obtains specific parameters of a second set of white light having a color temperature B from the microcontroller 640 and emits the white light having the color temperature B from one or more leds disposed in the second set of color channels 620. The third set of color channels 630 obtains specific parameters of a third set of white light having a color temperature T from the microcontroller 640, and the third set of white light having the color temperature T is emitted by one or more leds disposed in the third set of color channels 630. Finally, the light emitted by the three groups of color channels is mixed to obtain the required white light with the color temperature of G.
The micro-controller 640 is a microcomputer for setting various parameters, obtaining various parameters and outputting corresponding signals to control the three color channels to emit three groups of lights with different color temperatures. The microcontroller 640 is provided with modules corresponding to the color temperature adjusting method in the fourth embodiment, such as the obtaining module 410 and the output module 420 shown in fig. 6. The microcontroller 640 obtains system or human-set parameters through the obtaining module 410, including but not limited to specific parameters of the white light with a color temperature G (if the specific parameters of the white light with a color temperature G are directly obtained, it is necessary for the microcontroller 640 to obtain specific parameters of the first group of white light, the second group of white light, and the third group of white light after internal calculation, and then output the parameters), or specific parameters of the first group of white light with a color temperature a and/or specific parameters of the second group of white light with a color temperature B and/or specific parameters of the third group of white light with a color temperature T. The specific parameters are calculated inside the microcontroller 640 or directly obtained from an external computer, so as to control the output module 420 to output three sets of signals corresponding to lights with different color temperatures, and thus control the first set of color channels 610, the second set of color channels 620 and the third set of color channels 630 to output the first set of white light, the second set of white light and the third set of white light respectively. The microcontroller 640 can execute various functional applications and data processing of the three color temperature adjustment devices of the above embodiment, so as to implement the color temperature adjustment method of the second embodiment.
Also provided in embodiments herein is a storage medium storing executable instructions for execution by one or more processors, such as: executed by the microcontroller 640 in fig. 8, may cause the one or more processors to execute the color temperature adjustment method in the second method embodiment, for example, execute the method steps 110 to 130 in fig. 2 described above, and implement the functions of the modules 410 to 420 in fig. 6.
The above-described embodiments are illustrative, wherein the microcontroller 640, the first group of color channels 610, the second group of color channels 620, and the third group of color channels 630 may be one or more groups, the microcontroller 640, the first group of color channels 610, the second group of color channels 620, and the third group of color channels 630, which are illustrated as separate components, may or may not be integrally installed, and the microcontroller 640, the first group of color channels 610, the second group of color channels 620, and the third group of color channels 630, which are illustrated as separate components, may be directly connected into a whole using ports or pins, may be remotely connected through electrical or signals, may be located in one place, or may be distributed in different places. Some or all of the modules of the white light LED can be selected according to actual needs to achieve the purpose of the technical solution of the embodiment.
Through the above description of the embodiments, it is clear to those skilled in the art that the embodiments may be implemented by software plus a general hardware platform, and may also be implemented by hardware. Those skilled in the art will appreciate that all or part of the processes of the above method embodiments may be implemented by a computer program, which may be stored in a non-transitory computer readable storage medium, and when executed, may include the processes of the above method embodiments. The instructions are stored in the microcontroller, and can be various microcomputers.
The product can execute the method provided by the embodiment of the application, and has corresponding functional modules and beneficial effects of the execution method. For technical details which are not described in detail in the examples of the present application, reference is made to the methods provided in the examples of the present application.
The embodiment of the invention provides a color temperature adjusting method, a color temperature adjusting device and a white light LED; the color temperature of the mixed white light can be adjusted by outputting one group of colored light and two groups of white light or mixing three groups of white light. By the embodiment of the invention, the color coordinate of the mixed white light can fall within the MacAdam color area of the blackbody locus, and the color tolerance is less than 7.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; within the idea of the invention, also technical features in the above embodiments, or in different embodiments, may be combined and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or technical features in areas thereof may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present invention.
Claims (5)
1. A color temperature adjusting method is applied to a white light LED and is characterized by comprising the following steps:
according to the color temperature of the required white light, a first group of white light and a second group of white light are obtained in a MacAdam color area of a black body locus by adjusting the brightness of the white light, wherein the color temperatures of the first group of white light and the second group of white light are respectively smaller than and larger than the color temperature of the required white light, and the ordinate of the first group of white light and the ordinate of the second group of white light on a color coordinate graph are smaller than or equal to the ordinate of a point on the black body locus on;
acquiring a set of colored light according to the color temperature of the required white light, wherein the ordinate of the set of colored light on the color coordinate graph is larger than the ordinate of a point on a black body locus on the same abscissa, and the abscissa of the set of colored light is between the abscissas of the first set of white light and the second set of white light;
the first group of white light, the second group of white light and the group of colored light are output through three groups of color channels of the white light LED respectively, the required white light is obtained by mixing the first group of white light, the second group of white light and the group of colored light, the required white light falls in a MacAdam color zone of a black body locus, and the color tolerance of the required white light is less than 7.
2. The color temperature adjustment method according to claim 1,
the color temperature of the first white light set is less than the color temperature of the second white light set, the color temperatures of the first white light set and the second white light set are within a defined color temperature range of energy star, and the color tolerances of the first white light set, the second white light set and the colored light set are less than 7.
3. A color temperature adjusting device is applied to a white light LED and is characterized by comprising:
the acquisition module is used for acquiring a first group of white lights and a second group of white lights which have color temperatures respectively smaller than and larger than the color temperature of the required white light in a MacAdam color area of a black body locus by adjusting the brightness of the white light according to the color temperature of the required white light, wherein the ordinate of each of the first group of white lights and the ordinate of each of the second group of white lights on a color coordinate graph is smaller than or equal to the ordinate of a point on the black body locus on the same abscissa;
the acquisition module is further used for acquiring a group of colored lights according to the color temperature of the required white light, the ordinate of the group of colored lights on the color coordinate graph is larger than the ordinate of a point on a black body locus on the same abscissa, and the abscissa of the group of colored lights is between the abscissas of the first group of white lights and the second group of white lights;
and the output module is used for outputting the first group of white light, the second group of white light and the group of colored light through three groups of color channels of the white light LED respectively, the first group of white light, the second group of white light and the group of colored light are mixed to obtain the required white light, the required white light falls in a MacAdam color region of a black body locus, and the color tolerance of the required white light is less than 7.
4. The color temperature adjusting apparatus according to claim 3,
the color temperature of the first white light set is less than the color temperature of the second white light set, the color temperatures of the first white light set and the second white light set are within a defined color temperature range of energy star, and the color tolerances of the first white light set, the second white light set and the colored light set are less than 7.
5. A white LED, comprising:
the three color channels are respectively used for outputting two groups of white light with different color temperatures and one group of colored light; and the number of the first and second groups,
a microcontroller capable of controlling the illumination of the three sets of color channels; wherein,
the micro-controller is capable of executing the color temperature adjusting method according to any one of claims 1-2 when controlling the three groups of color channels to emit light.
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