CN118921790A

CN118921790A - White light color adjusting method, circuit and electronic equipment

Info

Publication number: CN118921790A
Application number: CN202411066034.0A
Authority: CN
Inventors: 曾伟均; 韩波; 黄海霆
Original assignee: Shenzhen Godox Photo Equipment Co Ltd
Current assignee: Shenzhen Godox Photo Equipment Co Ltd
Priority date: 2024-08-05
Filing date: 2024-08-05
Publication date: 2024-11-08

Abstract

The application provides a method, a circuit and electronic equipment for adjusting white light color, wherein the method comprises the following steps: determining a target light color to which light emitted by a light emitting device needs to be adjusted, wherein the light emitting device comprises a main light source and an auxiliary light source, the main light source is used for emitting white light, and the target light color is adjusted based on the white light; the color temperature difference between the light rays emitted by the auxiliary light source and the light rays emitted by the main light source is smaller than a preset threshold value; determining the power ratio between the main light source and the auxiliary light source according to the target light color; and adjusting the power of the main light source and the power of the auxiliary light source according to the power proportion so as to enable the light emitted by the light emitting device to reach the target light color. According to the technical scheme, the auxiliary effect of the auxiliary light source is adopted, so that the white light color emitted by the main light source can be steplessly adjusted based on the power ratio between the main light source and the auxiliary light source, the fineness of white light color adjustment is greatly improved, and an additional filter is not required, so that the material consumption of white light color adjustment is reduced.

Description

White light color adjusting method, circuit and electronic equipment

Technical Field

The application belongs to the technical field of light processing, and particularly relates to a method, a circuit and electronic equipment for adjusting white light color.

Background

An LED (LIGHT EMITTING Diode) has advantages of energy saving, low price, long service life, controllable light source, etc. as a light emitting source, and has been widely used in various lighting devices, and a white LED is the most widely used color light source in the lighting device. In some cases, a user may wish to adjust the color of the white LED, for example, in an imaging scene, the user may wish to bias the light emitted by the white LED to red and may wish to bias the light emitted by the white LED to green. In order to meet the needs of users, some white light LED devices can adjust the color of white light, and the adjustment mode is to add a filter in front of the white light source, and the color of the filter is adjusted to enable the light finally emitted by the white light source to reach the needs of users. However, the adjusting mode not only increases the consumable material of the filter skin, but also has limited selection of the filter, and the light color adjustment has lower fineness.

Disclosure of Invention

The application aims to provide a method, a circuit and electronic equipment for adjusting white light color, so as to improve the fineness of white light color adjustment.

Other features and advantages of the application will be apparent from the following detailed description, or may be learned by the practice of the application.

According to an aspect of the embodiment of the present application, there is provided a method for adjusting white light color, including:

Determining a target light color to which light emitted by a light emitting device needs to be adjusted, wherein the light emitting device comprises a main light source and an auxiliary light source, the main light source is used for emitting white light, and the target light color is adjusted based on the white light; the color temperature difference value between the light rays emitted by the auxiliary light source and the light rays emitted by the main light source is smaller than a preset threshold value;

determining a power ratio between the primary light source and the secondary light source according to the target light color;

and adjusting the power of the main light source and the power of the auxiliary light source according to the power proportion so as to enable the light emitted by the light emitting device to reach the target light color.

According to an aspect of an embodiment of the present application, there is provided a white light color adjusting circuit, including:

the main light source module is used for emitting white light and is connected with a power supply; the main light source module comprises a main light source;

the auxiliary light source module is connected with the power supply; the auxiliary light source module comprises an auxiliary light source;

The power adjusting module is connected with the main light source module and the auxiliary light source module and is used for determining the power proportion between the main light source and the auxiliary light source according to the target light color which needs to be adjusted by the light emitted by the light emitting equipment; and generating control signals of the main light source module and the auxiliary light source module according to the power proportion, so that the power of the main light source and the power of the auxiliary light source are adjusted through the control signals of the main light source module and the auxiliary light source module, and the light emitted by the light emitting device reaches the target light color.

According to an aspect of an embodiment of the present application, there is provided a device for adjusting white light color, including:

the light emitting device comprises a target light color determining module, a light emitting module and a light emitting module, wherein the target light color determining module is used for determining target light color to which light emitted by the light emitting device needs to be adjusted, the light emitting device comprises a main light source and an auxiliary light source, the main light source is used for emitting white light, and the target light color is adjusted based on the white light; the color temperature difference value between the light rays emitted by the auxiliary light source and the light rays emitted by the main light source is smaller than a preset threshold value;

The power proportion determining module is used for determining the power proportion between the main light source and the auxiliary light source according to the target light color;

and the power adjusting module is used for adjusting the power of the main light source and the power of the auxiliary light source according to the power proportion so as to enable the light emitted by the light emitting equipment to reach the target light color.

In one embodiment of the present application, the power ratio determining module is specifically configured to:

Determining the position coordinates of the target light color in a color space and the position coordinates of white light emitted by the main light source in the color space;

And determining the power ratio between the main light source and the auxiliary light source according to the position coordinates corresponding to the target light color and the position coordinates corresponding to the main light source.

If the position coordinates corresponding to the target light color are higher than the position coordinates corresponding to the main light source, increasing the power ratio between the main light source and the auxiliary light source;

and if the position coordinate corresponding to the target light color is lower than the position coordinate corresponding to the main light source, reducing the power ratio between the main light source and the auxiliary light source.

In one embodiment of the application, the primary light source comprises a first white light source and a second white light source; the power proportion determining module is specifically used for:

obtaining a combined light source formed by the first white light source and the second white light source according to the white light power ratio between the first white light source and the second white light source;

determining a power ratio between the combined light source and the auxiliary light source according to the target light color;

Correspondingly, the power adjustment module is specifically configured to:

and adjusting the power of the main light source and the power of the auxiliary light source according to the power proportion between the combined light source and the auxiliary light source.

In one embodiment of the application, the primary light source comprises a first white light source and a second white light source; the color temperature of the light emitted by the auxiliary light source is between the color temperature of the light emitted by the first white light source and the color temperature of the light emitted by the first white light source.

In one embodiment of the present application, the auxiliary light source is a pure monochromatic light emitting diode or an excitation light emitting diode; and the color of the auxiliary light source is selected from the color range indicated by the isotherm corresponding to the auxiliary light source.

According to an aspect of the embodiments of the present application, there is provided a computer-readable medium having stored thereon a computer program which, when executed by a processor, implements a method for adjusting white light color as in the above technical solution.

According to an aspect of an embodiment of the present application, there is provided an electronic apparatus including: a processor; and a memory for storing executable instructions of the processor; the processor executes the executable instructions to cause the electronic device to execute the method for adjusting the white light color as in the technical scheme.

According to an aspect of embodiments of the present application, there is provided a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the method for adjusting the white light color as in the above technical solution.

In the technical scheme provided by the embodiment of the application, firstly, the target light color to which the light emitted by the light emitting device needs to be regulated is determined, the light emitting device comprises a main light source and an auxiliary light source, the main light source is used for emitting white light, and the target light color is regulated based on the white light; the color temperature difference between the light rays emitted by the auxiliary light source and the light rays emitted by the main light source is smaller than a preset threshold value; then determining the power ratio between the main light source and the auxiliary light source according to the target light color; finally, the power of the main light source and the power of the auxiliary light source are adjusted according to the power proportion, so that the light emitted by the light emitting device reaches the target light color, and therefore, the white light color emitted by the main light source can be steplessly adjusted based on the power proportion between the main light source and the auxiliary light source through the auxiliary effect of the auxiliary light source, the fineness of the white light color adjustment is greatly improved, an additional filter is not needed, and the material consumption of the white light color adjustment is reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1A schematically shows a block diagram of an exemplary system architecture to which the technical solution of the present application is applied.

Fig. 1B schematically shows a block diagram of an exemplary system architecture to which the technical solution of the present application is applied.

Fig. 2 schematically illustrates a flowchart of a method for adjusting white light color according to an embodiment of the present application.

Fig. 3 schematically illustrates a schematic view of a color space provided by an embodiment of the present application.

Fig. 4 schematically illustrates a flowchart of a method for adjusting white light color according to an embodiment of the present application.

Fig. 5 schematically illustrates a schematic view of a color space provided by an embodiment of the present application.

Fig. 6 schematically illustrates a schematic diagram of a white light color adjusting circuit according to an embodiment of the present application.

Fig. 7 schematically illustrates a block diagram of a white light color adjusting circuit according to an embodiment of the present application.

Fig. 8 schematically illustrates a block diagram of a white light color adjusting circuit according to an embodiment of the present application.

Fig. 9 schematically shows a block diagram of a white light color adjusting device according to an embodiment of the present application.

Fig. 10 schematically shows a block diagram of a computer system suitable for use in implementing embodiments of the application.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the application may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.

The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.

The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.

In the present embodiment, the term "module" or "unit" refers to a computer program or a part of a computer program having a predetermined function and working together with other relevant parts to achieve a predetermined object, and may be implemented in whole or in part by using software, hardware (such as a processing circuit or a memory), or a combination thereof. Also, a processor (or multiple processors or memories) may be used to implement one or more modules or units. Furthermore, each module or unit may be part of an overall module or unit that incorporates the functionality of the module or unit.

It will be appreciated that in particular embodiments of the present application, where data relating to customer information (e.g., transaction information, reconciliation data) and the like is involved, when the above embodiments of the present application are applied to particular products or technologies, customer approval or consent is required and the collection, use and processing of the relevant data is required to comply with relevant laws and regulations and standards of the relevant country and region.

As shown in fig. 1A, system architecture 100 may include a terminal device 110, a network 120, and a server 130. Terminal device 110 may include a smart phone, tablet, notebook, smart voice interaction device, smart home appliance, vehicle terminal, and the like. The server 130 may be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, or a cloud server providing cloud computing services. The network 120 may be a communication medium of various connection types capable of providing a communication link between the light emitting device 110 and the server 130, and may be a wired communication link or a wireless communication link, for example.

The system architecture in embodiments of the present application may have any number of light emitting devices, networks, and servers, as desired for implementation. For example, the server 130 may be a server group composed of a plurality of server devices. In addition, the technical solution provided in the embodiment of the present application may be applied to the terminal device 110, where a light emitting module is provided in the terminal device 110, or may be applied to the server 130, or may be implemented by the light emitting device 110 and the server 130 together, which is not limited in particular. For example, the terminal device 110 is provided with a main light source and an auxiliary light source, the main light source is used for emitting white light, and a color temperature difference between light emitted by the auxiliary light source and light emitted by the main light source is smaller than a preset threshold. When the light color changing adjustment is needed, the terminal equipment 110 determines a target light color to which the emitted light needs to be adjusted, and then determines the power ratio between the main light source and the auxiliary light source according to the target light color; and then the power of the main light source and the power of the auxiliary light source are adjusted according to the power proportion, so that the target light color is emitted.

As shown in fig. 1B, the system architecture may include a terminal device 110 and a lamp body 140, where the terminal device 110 is connected to the lamp body 140. Terminal device 110 may include a smart phone, tablet, notebook, smart voice interaction device, smart home appliance, vehicle terminal, and the like. The connection between the terminal device 110 and the lamp body 140 may be a wired connection or a wireless connection, for example, the connection may be made with the lamp body 140 through a module such as bluetooth, NFC, wiFi, etc. in the terminal device 110, or the connection may be made with the lamp body 110 through an entity connection line such as a data line. The lamp body 140 is provided with a light source and a control circuit, and the control circuit may be a white light color adjusting circuit provided by any embodiment of the present application. The user may set the target light color through the terminal device 110 and send the target light color to the control circuit of the lamp body 110, so as to realize the adjustment of the light color of the white light through the control circuit.

Optionally, the user may also transmit a dimming signal containing the target light color to the lamp body 140 through the wireless DMX controller or the wired DMX controller to perform light color adjustment. The user can also select a target light color to perform light color adjustment through an operation key on the lamp body 140.

The following describes the method for adjusting the white light color provided by the application in detail with reference to the specific embodiments.

Fig. 2 schematically illustrates a flowchart of a method for adjusting white light color according to an embodiment of the present application, where the method may be implemented by a device for adjusting white light color, where the device may be configured in a light emitting device, and a specific implementation of the method is described below with the light emitting device as an execution subject. As shown in fig. 2, the method for adjusting the light color of white light provided in this embodiment includes steps 210 to 230, which are specifically as follows:

Step 210, determining a target light color to which light emitted by a light emitting device needs to be adjusted, wherein the light emitting device comprises a main light source and an auxiliary light source, the main light source is used for emitting white light, and the target light color is adjusted based on the white light; the color temperature difference between the light emitted by the auxiliary light source and the light emitted by the main light source is smaller than a preset threshold value.

Specifically, the light emitting device is provided with a main light source and an auxiliary light source, the main light source is used for emitting white light, the light emitted by the auxiliary light source is used for adjusting the light color of the white light emitted by the main light source, so that the adjusted white light color meets the requirements of users, and in the embodiment, the light color required to be achieved after adjustment is the target light color. In this embodiment, the adjustment of the white light is to adjust the light color without changing the color temperature of the white light, so the color temperature of the light emitted by the auxiliary light source must be close to the color temperature of the white light emitted by the main light source, that is, the difference between the color temperatures of the two light sources is smaller than the preset threshold. The light color is a parameter indicating the color of light in optical terms, and K (Kevin) is a calculation unit.

In one embodiment of the present application, the target light color to which the light emitted by the light emitting device needs to be adjusted may be set by a user, for example, the user sends an instruction to the light emitting device to indicate that the target light color reached by the light emitted by the light emitting device is a specific value, or a preferential color, for example, the target light color is white light redder, white light greener, or the like.

In one embodiment of the present application, the target light color may be determined according to the white light usage scene, for example, in a portrait photographing light compensation scene, a light color of magenta is generally required, and then the target light color is a white light bias; setting a target light color to be greener in a green plant shooting scene; in the simulated sunshine scene, the target light color is white light and greenish. Under the condition that the target light color is determined based on the white light use scene, the mapping relation between the white light use scene and the target light color can be preset, and then in the actual use process, the target light color corresponding to the current scene can be determined according to the mapping relation and the specific use scene.

Step 220, determining the power ratio between the main light source and the auxiliary light source according to the target light color.

Specifically, in the light emitting device, the power of the light source (including the main light source and the auxiliary light source) reflects the light color of the light emitted by the light source, so when the power ratio between the main light source and the auxiliary light source changes, the white light color represented by the whole generating device changes, and therefore, the power ratio between the main light source and the auxiliary light source has a certain association relationship with the white light color represented by the whole generating device, and the power ratio between the main light source and the auxiliary light source can be determined based on the association relationship and the currently required target light color.

In one embodiment of the application, the process of calculating the power ratio includes: determining the position coordinates of the target light color in a color space and the position coordinates of white light emitted by a main light source in the color space; and determining the power ratio between the main light source and the auxiliary light source according to the position coordinates corresponding to the target light color and the position coordinates corresponding to the main light source.

Specifically, the color space corresponds to a mathematical model for describing colors by numerical values, and the color space commonly used is CIE 1931 color space, CIE 1960 color space, and the like, and each color space has a corresponding coordinate system, for example, the CIE 1931 color space can use an XYZ coordinate system or an RGB coordinate system, the XYZ coordinate system is actually converted by the RGB coordinate system, X represents an ideal red primary color, Y represents an ideal green primary color, and Z represents an ideal blue primary color, where "ideal" is to be distinguished from true colors in a physical sense. In general, the CIE 1931XYZ color space is typically projected to be used as the CIE 1931xyY color space, i.e., the colors are represented by the other two coefficients X and Y without considering Z, because Z can be derived from x+y+z=1, so that a two-dimensional horseshoe-shaped color space can be obtained, as shown in fig. 3.

Any color can be seen as a combination of three colors, red, green, and blue, and therefore a point in the color space can represent one color. The light emitting device may calculate the values of the three ideal primary color components of the target light color, red, green, and blue, i.e., determine X, Y, Z values in the CIE 1931XYZ color space, i.e., determine the position coordinates of the target light color in the color space. Generally, the position coordinates of white light in the color space are generally determined, such as point a in fig. 3, that is, white light, and the position coordinates thereof may be represented as (0.3302,0.3391). In fig. 3, the arc line passing through the point a represents the blackbody locus, and each longitudinal line segment intersecting the blackbody locus represents an isotherm, and in this embodiment, the light emitted by the auxiliary light source is located on the isotherm passing through the point a. Typically, the white light location is typically located on the blackbody locus, and, in view of the error, the white light location may also be located near the blackbody locus, such as above or below the blackbody locus.

After the position coordinates of the target light color and the white light are determined, the power ratio between the main light source and the auxiliary light source is determined based on the relation between the position coordinates of the target light color and the position coordinates of the white light color. If the position coordinate corresponding to the target light color is higher than the position coordinate corresponding to the main light source, as shown in fig. 3, that is, the position coordinate indicating the target light color is located above the point a in the vertical direction, and the color of the upper area in the CIE 1931XYZ color space is usually red, so that this situation indicates that the target light color is biased to magenta, the power ratio between the main light source and the auxiliary light source is increased. If the position coordinate corresponding to the target light color is lower than the position coordinate corresponding to the main light source, as shown in fig. 3, that is, the position coordinate representing the target light color is located below the point a in the vertical direction, and the color of the upper area in the CIE 1931XYZ color space is usually in the green system, so that this situation represents that the target light color is greenish, the power ratio between the main light source and the auxiliary light source is reduced.

Step 230, adjusting the power of the main light source and the power of the auxiliary light source according to the power ratio, so that the light emitted by the light emitting device reaches the target light color.

Specifically, in the light emitting device, the total power of the main light source and the auxiliary light source is determined, and the power of the main light source and the power of the auxiliary light source are adjusted according to the power ratio, which corresponds to the distribution of the total power between the main light source and the auxiliary light source according to the power ratio. For example, the total power is 100W, the power ratio between the main light source and the auxiliary light source is 4:1, and then the power of the main light source after adjustment is 80W, and the power of the auxiliary light source is 20W. And finally, the light emitted by the light emitting device is a target light color, and the target light color is the fusion of the white light color of the main light source and the light color of the auxiliary light source.

For example, in the color space shown in fig. 3, since the color temperature difference between the light emitted by the auxiliary light source and the light emitted by the main light source is smaller than the preset threshold, the color of the auxiliary light source corresponds to the color selected on the isotherm of the main light source, such as the isotherm of the passing point a in fig. 3, the color temperature is 5600K, the color above the point a on the isotherm can be selected as the auxiliary light source B, the point B is (0.3293,0.4566), the color below the point a on the isotherm can be selected as the auxiliary light source B, the point B is (0.3308,0.2575), and the final target color is between the points A, B. The larger the power ratio between the main light source and the auxiliary light source is, the more the target light color is biased towards magenta, at this time, if the auxiliary light source B is above the white light A, the target light color is biased towards B, and at this time, if the auxiliary light source B is below the white light A, the target light color is biased towards A; the smaller the power ratio between the main light source and the auxiliary light source, the more the target light color is biased towards green, at this time, if the auxiliary light source B is above the white light A, the target light color is biased towards A, and at this time, if the auxiliary light source B is below the white light A, the target light color is biased towards B. The color bias toward magenta or green is used herein to mean that the color of light is slightly changed based on white light, and does not mean that the final light is entirely magenta or green. Therefore, the technical scheme of the application changes the green grade of the white light by adjusting the power ratio between the main light source and the auxiliary light source, and the power ratio can be adjusted in a stepless way, so that the green grade of the white light (namely white light color) is adjusted in a stepless way, and the fineness of the white light color adjustment is improved.

In one embodiment of the application, the light source (primary or secondary) emits light when it is powered on, and when the equivalent voltage across the light source changes, the power of the light source changes, and the equivalent voltage is regulated in accordance with a control signal, typically a PWM (Pulse Width Modulation ) signal, which in turn can be varied by varying the duty cycle of the PWM signal, regulating the power of the light source. Accordingly, the main light source control signal duty cycle and the auxiliary light source control signal duty cycle may be generated according to the power ratio, respectively, and the main light source power may be adjusted based on the main light source control signal duty cycle, and the auxiliary light source power may be adjusted based on the auxiliary light source control signal duty cycle.

Fig. 4 schematically shows a flow chart of a method for adjusting the color of white light according to an embodiment of the present application, which is a further optimization of the above-mentioned embodiment. As shown in fig. 4, the method for adjusting the light color of white light provided in this embodiment includes steps 410 to 440, which are specifically as follows:

Step 410, determining a target light color to which light emitted by a light emitting device needs to be adjusted, wherein the light emitting device comprises a main light source and an auxiliary light source, and the main light source comprises a first white light source and a second white light source; the color temperature difference between the light emitted by the auxiliary light source and the light emitted by the main light source is smaller than a preset threshold value.

The primary light source in this embodiment includes two white light emitting light sources, denoted as a first white light source and a second white light source, respectively, one of which is typically cool white light and the other of which is warm white light. The color temperature of the auxiliary light source may be between the first white light source color temperature and the second white light source color temperature. Illustratively, as shown in the color space of FIG. 5, point A (0.2983,0.3178) is a first white light source, color temperature is 7500K, point C (0.4775,0.4283) is a second white light source, color temperature is 2600K, the auxiliary light source can be on any isotherm between points A, C, as shown in FIG. 5, auxiliary light source B is on isotherm 5600K. The auxiliary light source B may be above the blackbody locus, such as point (0.3293,0.4566), or below the blackbody locus, such as point (0.3308,0.2575).

In one embodiment of the present application, the auxiliary light source may be a pure monochromatic light emitting diode or an excitation light emitting diode. Pure monochromatic LEDs emit light directly through the semiconductor material, each LED emitting light of only one color, typically red, green, blue or other monochromatic light. Pure monochromatic LEDs typically use direct bandgap semiconductor materials, such as aluminum gallium indium phosphide (AlInGaP) or gallium nitride (GaN), with a narrow spectrum. Excitation LEDs, particularly white LEDs, typically use a blue LED as an excitation source, which is then converted to white light or other color light by a phosphor or other material. The conversion process involves light re-absorption and re-emission, and can emit light of various colors, especially white light LEDs, and the color temperature and color performance of the white light can be adjusted by using different types of fluorescent powder, so that the spectrum is wide.

And step 420, obtaining a combined light source formed by the first white light source and the second white light source according to the white light power ratio between the first white light source and the second white light source.

When white light emitted by a plurality of white light sources is subjected to light color adjustment, the plurality of white light sources are fused into a combined light source, and the fusion process can be realized by adjusting the power ratio among the white light sources. Thus, for the first white light source and the second white light source, by adjusting the white light power ratio between the first white light source and the second white light source, a combined light source of the two can be obtained.

In one embodiment of the present application, after determining the combined light source, the color temperature of the auxiliary light source may be set to be the same as the color temperature of the combined light source, so that the color temperature of the target light color obtained by final dimming is still kept near the color temperature of the combined light source, thereby achieving the effect of "dimming without temperature adjustment".

Step 430, determining the power ratio between the combined light source and the auxiliary light source according to the target light color.

Specifically, the power ratio adjustment between the combined light source and the auxiliary light source is the same as the ratio adjustment between the main light source and the auxiliary light source in the foregoing embodiment, and will not be described herein.

Step 440, adjusting the power of the main light source and the power of the auxiliary light source according to the power ratio between the combined light source and the auxiliary light source, so as to make the light emitted by the light emitting device reach the target light color.

Specifically, the process of adjusting the power according to the power ratio is the same as that in the foregoing embodiment, and will not be described herein.

In the technical scheme provided by the embodiment of the application, the combined light source of the first white light source and the second white light source is determined, and then the power of the main light source and the power of the auxiliary light source are regulated according to the power proportion between the combined light source and the auxiliary light source, so that the green grade regulation of a plurality of white light sources is realized under the condition that the color temperature is not influenced, and the fineness of the white light green grade regulation is improved.

Fig. 6 schematically illustrates a schematic diagram of a white light color adjustment circuit according to an embodiment of the present application, where the circuit may implement the white light color adjustment method according to any embodiment of the present application.

As shown in fig. 6, the adjusting circuit includes a main light source module 610, an auxiliary light source module 620, and a power adjusting module 630. The main light source module 610 and the auxiliary light source module 620 are connected to a power source, respectively, and the power adjustment module 630 is connected to the main light source module 610 and the auxiliary light source module 620 at the same time. The main light source module 610 includes a main light source for emitting white light. The auxiliary light source module 620 includes an auxiliary light source for emitting auxiliary light. The power adjustment module 630 is configured to determine a power ratio between the main light source and the auxiliary light source according to a target light color to which the light emitted by the light emitting device needs to be adjusted; and generates control signals of the main light source module 610 and the auxiliary light source module 620 according to the power ratio, so as to adjust the power of the main light source and the power of the auxiliary light source by the control signals of the main light source module 610 and the auxiliary light source module 620, so that the light emitted by the light emitting device reaches the target light color.

In one embodiment of the present application, when the main light source module 610 includes only one main light source, the white light color adjusting circuit is as shown in fig. 7, and the specific structures of the main light source module 610 and the auxiliary light source module 620 are shown in fig. 7, and the power adjusting module 630 is not shown.

As shown in fig. 7, the main light source module 610 includes: the main light emitting diode LED1, the main pulse controller PWM IC1, the first main switching tube Q11, the first inductor L1, the second main switching tube Q12, the main resistor R1 and the main grounding diode D1. The main light emitting diode LED1 is a main light source for emitting white light. The main pulse controller PWM IC1 outputs pulse control signals of the first and second main switching transistors Q11 and Q12. The first end of the first main switching tube Q11 is connected with a power supply, the second end of the first main switching tube Q11 is connected with the first inductor L1, and the control end of the first main switching tube Q11 is connected with the main pulse controller PWM IC1. Two ends of the first inductor L1 are respectively connected with a first main switching tube Q11 and a second main switching tube Q12. The first end of the second main switch tube Q12 is connected with the first inductor L1 and the positive electrode of the main light emitting diode LED1 respectively, the second end of the second main switch tube Q12 is connected with the negative electrode of the main light emitting diode LED1, and the control end of the second main switch tube Q12 is connected with the main pulse controller PWM IC1. One end of the main resistor R1 is respectively connected with the negative electrodes of the main pulse controller PWM IC1 and the main light emitting diode LED1, and the other end is grounded. The positive electrode of the main grounding diode D1 is grounded, and the negative electrode of the main grounding diode D1 is connected with the second end of the first main switching tube Q11.

As shown in fig. 7, the auxiliary light source module 620 includes: the auxiliary light emitting diode LED2, the auxiliary pulse controller PWM IC2, the first auxiliary switching tube Q21, the second inductor L2, the second auxiliary switching tube Q22, the auxiliary resistor R2 and the auxiliary grounding diode D2. The auxiliary light emitting diode LED2 is an auxiliary light source for emitting auxiliary light so that the white light emitted by the main light source LED1 is changed into a target light color. The auxiliary pulse controller PWM IC2 outputs pulse control signals of the first auxiliary switching tube Q21 and the second auxiliary switching tube Q22. The first end of the first auxiliary switching tube Q21 is connected with a power supply, the second end of the first auxiliary switching tube Q21 is connected with the second inductor L2, and the control end of the first auxiliary switching tube Q21 is connected with the auxiliary pulse controller PWM IC2. Two ends of the second inductor L2 are respectively connected with the first auxiliary switching tube Q21 and the second auxiliary switching tube Q22. The first end of the second auxiliary switching tube Q22 is connected with the second inductor L2 and the positive electrode of the auxiliary light emitting diode LED2 respectively, the second end of the second auxiliary switching tube Q22 is connected with the negative electrode of the auxiliary light emitting diode LED2, and the control end of the second auxiliary switching tube Q22 is connected with the auxiliary pulse controller PWM IC2. One end of the auxiliary resistor R2 is respectively connected with the auxiliary pulse controller PWM IC2 and the cathode of the auxiliary light emitting diode LED2, and the other end of the auxiliary resistor R is grounded. The anode of the auxiliary grounding diode D2 is grounded, and the cathode is connected to the second end of the first auxiliary switching tube Q21.

In this embodiment, the switching tubes are all MOS tubes, the first end of each switching tube is the drain electrode of the MOS tube, the second end is the source electrode of the MOS tube, and the control end is the gate electrode of the MOS tube. In practical applications, the switching transistor may be other types of devices, such as a transistor, an IGBT, etc.

Since the main light source module 610 and the auxiliary light source module 620 are similar in structure, the operation principle of the circuit will be described by taking the main light source module 610 as an example.

In the main light source module 610, the first main switching tube Q11, the first inductor L1 and the main grounding diode D1 form a voltage adjusting module, and by changing the duty ratio of the control signal PWM11 received by the control end of the first main switching tube Q11, the equivalent voltage input to the main light emitting diode LED1 can be changed, so as to change the equivalent power provided to the main light emitting diode LED 1. The second main switch tube Q12 is a component for controlling the on/off of the main light emitting diode LED1, and by changing the duty ratio of the control signal PWM12 received by the control end of the second main switch tube Q12, the actual on/off time of the main light emitting diode LED1 can be changed, that is, the equivalent current flowing through the main light emitting diode LED1 is changed, so as to change the power of the main light emitting diode LED 1.

The main light emitting diode LED1 has different light emitting luminance at different power. The second main switch Q12 controls the on and off of the main light emitting diode LED1 to change the "brightness" of the light emitted by the main light emitting diode LED1 (in the case of higher switching frequency, the effect observed by the human eye is that the light is continuously bright, and the brightness changes with the change of the duty ratio), and the voltage and the current of the main light emitting diode LED1 can be kept unchanged (in the case of fixed duty ratio of the PWM11 signal) during the time when the main light emitting diode LED1 is actually turned on (for example, during the high level period of the PWM 12), so that the color temperature of the light has little influence.

In the adjusting method provided by the embodiment of the application, after the power proportion between the main light emitting diode LED1 and the auxiliary light emitting diode LED2 is determined according to the target light color, the control signal PWM11 of the first main switching tube Q11 corresponding to the main light emitting diode LED1 and the control signal PWM21 of the first auxiliary switching tube Q21 corresponding to the auxiliary light emitting diode LED2 can be generated based on the power proportion, and the on-off of the first main switching tube Q11 and the first auxiliary switching tube Q21 is controlled by the control signal PWM11 and the control signal PWM21 respectively, so that the equivalent voltage of the main light emitting diode LED1 and the equivalent voltage of the auxiliary light emitting diode LED2 are changed, and the power of the main light emitting diode LED1 and the power of the auxiliary light emitting diode LED2 are changed, so that the final light emitting effect reaches the target light color, that is, the light emitting color of the main light emitting diode LED1 is reddish or greenish.

The following describes the adjustment process of the light emitting diode by taking the control signal PWM11 as an example. The first main switching tube Q11 is turned on during the high level of the control signal PWM11 (here, since the NMOS switching tube is used in fig. 7, the high level is turned on, and when other types of switching tubes are used, the high level is turned on, and the low level is turned on too), so that the power signal reaches the main light emitting diode LED1 through the first inductor L1 to form a conductive loop, and drives the main light emitting diode LED1 to emit light. Due to the existence of the first inductor L1, a climbing process is carried out during power-up, overvoltage caused by instability of a power supply part is relieved, and meanwhile, the first inductor L1 stores energy during the period. During the low level of the control signal PWM1, the electric energy accumulated in the first inductor L1 is discharged to the main light emitting diode LED1, so that the main light emitting diode LED1 is continuously in a driven state (with a voltage supply). Meanwhile, the control signal PWM12 determines the duty ratio according to the given brightness to control the on-off of the main light emitting diode LED1, so as to realize the brightness adjustment of light.

In an embodiment of the present application, when the main light source module 610 includes only two main light sources, the white light color adjusting circuit is shown in fig. 8, and specific structures of the main light source module 610 and the auxiliary light source module 620 are shown in fig. 8, and the power adjusting module 630 is not shown, where the structure of the auxiliary light source module 620 is the same as that of the auxiliary light source module 620 in the embodiment shown in fig. 7, and will not be repeated here.

As shown in fig. 8, the main light source module 610 includes a first light emitting unit 611 and a second light emitting unit 612, and the structure of the first light emitting unit 611 is the same as that of the main light source module 610 in the embodiment shown in fig. 7, and will not be described herein. The second light emitting unit 612 includes: the main light emitting diode LED3, the main pulse controller PWM IC3, the first main switching tube Q31, the first inductor L3, the second main switching tube Q32, the main resistor R3 and the main grounding diode D3. The connection relationship between the devices in the second light emitting unit 612 is the same as that of the devices in the main light source module 610 in the embodiment shown in fig. 7, and will not be described herein.

The working principle of the circuit shown in fig. 8 is similar to that of the circuit shown in fig. 7, except that in the circuit shown in fig. 8, 3 sets of control signals are required to be generated to control the first main switching tube Q11, the first auxiliary switching tube Q21 and the first main switching tube Q31, respectively, and other processes may refer to the descriptions in the foregoing embodiments and are not repeated herein.

According to the white light color adjusting circuit provided by the technical scheme of the application, stepless adjustment of white light color can be realized through the power ratio between the main light source and the auxiliary light source, and light color adjustment with higher fine degree can be realized no matter single-color temperature white light color adjustment (the circuit shown in fig. 7) or double-color temperature white light color adjustment (the circuit shown in fig. 8).

It should be noted that although the steps of the methods of the present application are depicted in the accompanying drawings in a particular order, this does not require or imply that the steps must be performed in that particular order, or that all illustrated steps be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc.

The following describes embodiments of the device of the present application that may be used to implement the method for adjusting the color of white light in the above-described embodiments of the present application. Fig. 9 schematically shows a block diagram of a white light color adjusting device according to an embodiment of the present application. As shown in fig. 9, the device for adjusting white light color provided by the embodiment of the application includes:

a target light color determining module 910, configured to determine a target light color to which light emitted by a light emitting device needs to be adjusted, where the light emitting device includes a main light source and an auxiliary light source, the main light source is configured to emit white light, and the target light color is adjusted based on the white light; the color temperature difference value between the light rays emitted by the auxiliary light source and the light rays emitted by the main light source is smaller than a preset threshold value;

A power ratio determining module 920, configured to determine a power ratio between the primary light source and the secondary light source according to the target light color;

And the power adjusting module 930 is configured to adjust the power of the main light source and the power of the auxiliary light source according to the power ratio, so that the light emitted by the light emitting device reaches the target light color.

In one embodiment of the present application, the power ratio determining module 920 is specifically configured to:

In one embodiment of the application, the primary light source comprises a first white light source and a second white light source; the power ratio determining module 920 is specifically configured to:

Correspondingly, the power adjustment module 930 is specifically configured to:

Specific details of the device for adjusting white light color provided in each embodiment of the present application have been described in the corresponding method embodiments, and are not described herein.

Fig. 10 schematically shows a block diagram of a computer system of an electronic device for implementing an embodiment of the application.

It should be noted that, the computer system 1000 of the electronic device shown in fig. 10 is only an example, and should not impose any limitation on the functions and the application scope of the embodiments of the present application.

As shown in fig. 10, the computer system 1000 includes a central processing unit 1001 (Central Processing Unit, CPU) which can execute various appropriate actions and processes according to a program stored in a Read-Only Memory 1002 (ROM) or a program loaded from a storage portion 1008 into a random access Memory 1003 (Random Access Memory, RAM). In the random access memory 1003, various programs and data necessary for the system operation are also stored. The cpu 1001, the rom 1002, and the ram 1003 are connected to each other via a bus 1004. An Input/Output interface 1005 (i.e., an I/O interface) is also connected to bus 1004.

The following components are connected to the input/output interface 1005: an input section 1006 including a keyboard, a mouse, and the like; an output portion 1007 including a Cathode Ray Tube (CRT), a Liquid crystal display (Liquid CRYSTAL DISPLAY, LCD), and a speaker, etc.; a storage portion 1008 including a hard disk or the like; and a communication section 1009 including a network interface card such as a local area network card, a modem, or the like. The communication section 1009 performs communication processing via a network such as the internet. The drive 1010 is also connected to the input/output interface 1005 as needed. A removable medium 1011, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like, is installed as needed in the drive 1010, so that a computer program read out therefrom is installed as needed in the storage section 1008.

In particular, the processes described in the various method flowcharts may be implemented as computer software programs according to embodiments of the application. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from a network via the communication portion 1009, and/or installed from the removable medium 1011. The computer programs, when executed by the central processor 1001, perform the various functions defined in the system of the present application.

It should be noted that, the computer readable medium shown in the embodiments of the present application may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-Only Memory (ROM), an erasable programmable read-Only Memory (Erasable Programmable Read Only Memory, EPROM), a flash Memory, an optical fiber, a portable compact disc read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present application, however, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.

The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functions of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.

From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, and includes several instructions to cause a computing device (may be a personal computer, a server, a touch terminal, or a network device, etc.) to perform the method according to the embodiments of the present application.

Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains.

It is to be understood that the application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A method for adjusting the color of white light, comprising:

2. The method of claim 1, wherein determining a power ratio between the primary light source and the secondary light source based on the target light color comprises:

3. The method of adjusting a color of white light according to claim 2, wherein determining a power ratio between the primary light source and the secondary light source according to the position coordinates corresponding to the target color and the position coordinates corresponding to the primary light source comprises:

4. The method of claim 1, wherein the primary light source comprises a first white light source and a second white light source; determining a power ratio between the primary light source and the secondary light source according to the target light color, comprising:

correspondingly, adjusting the power of the main light source and the power of the auxiliary light source according to the power proportion comprises:

5. The method of claim 1, wherein the primary light source comprises a first white light source and a second white light source; the color temperature of the light emitted by the auxiliary light source is between the color temperature of the light emitted by the first white light source and the color temperature of the light emitted by the first white light source.

6. The method of claim 1, wherein the auxiliary light source is a pure monochromatic light emitting diode or an excitation light emitting diode; and the color of the auxiliary light source is selected from the color range indicated by the isotherm corresponding to the auxiliary light source.

7. A white light color adjusting circuit, comprising:

8. The white light color adjustment circuit of claim 6, wherein the primary light source module comprises:

The main light-emitting diode is used for emitting white light; the main light emitting diode is the main light source;

A main pulse controller for outputting a pulse control signal;

The first end of the first main switching tube is connected with the power supply, the second end of the first main switching tube is connected with the first inductor, and the control end of the first main switching tube is connected with the main pulse controller;

the two ends of the first inductor are respectively connected with the first main switching tube and the second main switching tube;

The first end of the second main switch tube is connected with the first inductor and the positive electrode of the main light-emitting diode respectively, the second end of the second main switch tube is connected with the negative electrode of the main light-emitting diode, and the control end of the second main switch tube is connected with the main pulse controller;

One end of the main resistor is respectively connected with the main pulse controller and the cathode of the main light-emitting diode, and the other end of the main resistor is grounded;

and the anode of the main grounding diode is grounded, and the cathode of the main grounding diode is connected with the second end of the first main switching tube.

9. The white light color adjustment circuit according to claim 7, wherein the auxiliary light source module comprises:

the auxiliary light-emitting diode is the auxiliary light source;

An auxiliary pulse controller for outputting a pulse control signal;

The first end of the first auxiliary switching tube is connected with the power supply, the second end of the first auxiliary switching tube is connected with the second inductor, and the control end of the first auxiliary switching tube is connected with the auxiliary pulse controller;

The two ends of the second inductor are respectively connected with the first auxiliary switching tube and the second auxiliary switching tube;

The first end of the second auxiliary switching tube is connected with the second inductor and the anode of the auxiliary light-emitting diode respectively, the second end of the second auxiliary switching tube is connected with the cathode of the auxiliary light-emitting diode, and the control end of the second auxiliary switching tube is connected with the auxiliary pulse controller;

one end of the auxiliary resistor is respectively connected with the auxiliary pulse controller and the cathode of the auxiliary light-emitting diode, and the other end of the auxiliary resistor is grounded;

and the anode of the auxiliary grounding diode is grounded, and the cathode of the auxiliary grounding diode is connected with the second end of the first auxiliary switching tube.

10. An electronic device, comprising:

A processor; and

A memory for storing executable instructions of the processor;

Wherein the processor is configured to execute the executable instructions to implement the method of adjusting the color of white light as claimed in any one of claims 1 to 6.