Method, device and equipment for adjusting peak wavelength of light-emitting diode and medium

Abstract

The invention discloses a peak wavelength adjusting method, device and equipment of a light-emitting diode and a medium, and relates to the technical field of semiconductor circuit control, and the method comprises the steps: monitoring the spectrum of the light-emitting diode in a working state, and determining the actual peak wavelength of the light-emitting diode based on the spectrum; obtaining a target peak wavelength of the light emitting diode in a working state, and comparing the actual peak wavelength with the target peak wavelength; and when it is detected that the actual peak wavelength drifts relative to the target peak wavelength, adjusting the input power of each sub-light-emitting diode according to the target peak wavelength so as to adjust the actual peak wavelength to the target peak wavelength. According to the invention, when the peak wavelength of the LED composed of the plurality of sub-LEDs drifts, the input power of each sub-LED is adjusted, the peak wavelength of the LED light source is kept relatively stable under different input powers, and the accuracy of spectrum combination and the overall performance of the LED light-emitting system are improved.

Description

Technical Field

[0001] The present application relates to the field of semiconductor circuit control technology, and in particular to a method, device, electronic device and storage medium for adjusting the peak wavelength of a light emitting diode. Background Art

[0002] When implementing the work of spectral combination of multiple LEDs (Light Emitting Diodes), the ideal situation is that after the LEDs are combined at different input powers, the peak wavelength of the spectrum obtained is relatively stable. However, due to the semiconductor characteristics and thermal characteristics of the LED itself, when the LED is driven at different powers, the peak wavelength of the LED will drift with the temperature change. Sometimes the degree of this drift phenomenon is large, which leads to stability problems in accurately determining the spectral intensity, etc. Although the impact of this wavelength shift can be reduced through sophisticated semiconductor processes, this method of improving semiconductor production processes is often accompanied by high costs and operational complexity.

[0003] Therefore, how to conveniently keep the peak wavelength of LED light sources relatively stable is a problem that needs to be solved urgently. Summary of the invention

[0004] The main purpose of the present application is to provide a method, device, electronic device and storage medium for adjusting the peak wavelength of a light emitting diode, aiming to solve the technical problem of how to conveniently keep the peak wavelength of an LED light source relatively stable.

[0005] To achieve the above-mentioned object, the present application proposes a method for adjusting the peak wavelength of a light-emitting diode, wherein the method for adjusting the peak wavelength of a light-emitting diode is applied to a peak wavelength adjustment system, wherein the peak wavelength adjustment system includes a light-emitting diode composed of a plurality of sub-light-emitting diodes, and the method for adjusting the peak wavelength of a light-emitting diode includes:

[0006] Monitoring the spectrum of the light-emitting diode in a working state, and determining the actual peak wavelength of the light-emitting diode based on the spectrum, wherein the spectrum is generated by mixing the light of each sub-light-emitting diode;

[0007] Obtaining a target peak wavelength of the light emitting diode in a working state, and comparing the actual peak wavelength with the target peak wavelength;

[0008] When it is detected that the actual peak wavelength has a wavelength drift compared to the target peak wavelength, the input power of each sub-LED is adjusted according to the target peak wavelength to adjust the actual peak wavelength to the target peak wavelength.

[0009] In one embodiment, the step of adjusting the input power of each sub-LED according to the target peak wavelength comprises:

[0010] Acquire the current input power of the light emitting diode, and query a preset relationship table according to the current input power and the target peak wavelength to obtain the reference input power of each sub-light emitting diode under the current input power in the preset relationship table;

[0011] The input power of each sub-light emitting diode is adjusted to the reference input power.

[0012] In one embodiment, the step of querying a preset relationship table according to the current input power and the target peak wavelength to obtain the reference input power of each sub-light emitting diode at the current input power in the preset relationship table includes:

[0013] Determine the corresponding recorded peak wavelength in the preset relationship table according to the current input power and the target peak wavelength;

[0014] The recorded input power of each sub-light emitting diode associated with the recorded peak wavelength in the preset relationship table is used as each reference input power.

[0015] In one embodiment, the peak wavelength adjustment system further includes a light mixing component, and each sub-LED generates a spectrum of the light-emitting diode by mixing light through the light mixing component, wherein the light mixing component includes at least a plurality of light scattering plates, and after the step of adjusting the input power of each sub-LED to the reference input power, the step further includes:

[0016] Adjusting the emission angle of each sub-light emitting diode after the input power is adjusted;

[0017] The emission light generated by each sub-light emitting diode after the emission angle is adjusted is mixed by the multi-layer light scattering plate to obtain a new spectrum of the light emitting diode in the working state.

[0018] In one embodiment, the peak wavelength adjustment method of the light emitting diode further includes:

[0019] For any sub-light emitting diode, monitoring the test peak wavelength of the sub-light emitting diode under different test input powers;

[0020] Recording each test input power and the test peak wavelength of the sub-light emitting diode at each test input power to obtain each recorded peak wavelength at each recorded input power, and constructing a preset relationship sub-table of the sub-light emitting diode based on each recorded peak wavelength at each recorded input power;

[0021] After traversing each sub-LED, the preset relationship table is obtained based on the combination of each preset relationship sub-table.

[0022] In one embodiment, after the step of comparing the actual peak wavelength with the target peak wavelength, the step further includes:

[0023] determining an amount of deviation between the actual peak wavelength and the target peak wavelength;

[0024] If the deviation is less than or equal to the preset value, returning to the step of monitoring the spectrum of the light emitting diode in the working state;

[0025] If the deviation is greater than a preset value, it is determined that the actual peak wavelength has a wavelength drift compared to the target peak wavelength.

[0026] In one embodiment, the difference between the peak wavelengths corresponding to the sub-light emitting diodes configured by the peak wavelength adjustment system under the same input power is smaller than a preset spectral half-width value.

[0027] In addition, to achieve the above-mentioned purpose, the present application also proposes a peak wavelength adjustment device for a light emitting diode, wherein the peak wavelength adjustment device for a light emitting diode is applied to a peak wavelength adjustment system, wherein the peak wavelength adjustment system includes a light emitting diode composed of a plurality of sub-light emitting diodes, and the peak wavelength adjustment device for a light emitting diode includes:

[0028] A monitoring module, used for monitoring the spectrum of the light emitting diode in a working state, and determining the actual peak wavelength of the light emitting diode based on the spectrum, wherein the spectrum is generated by mixing the light of each sub-light emitting diode;

[0029] A comparison module, used for obtaining a target peak wavelength of the light emitting diode in a working state, and comparing the actual peak wavelength with the target peak wavelength;

[0030] The adjustment module is used to adjust the input power of each sub-light emitting diode according to the target peak wavelength when it is detected that the actual peak wavelength has a wavelength drift compared to the target peak wavelength, so as to adjust the actual peak wavelength to the target peak wavelength.

[0031] In addition, to achieve the above-mentioned purpose, the present application also proposes an electronic device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the peak wavelength adjustment method of the light-emitting diode as described above.

[0032] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the peak wavelength adjustment method of the light-emitting diode as described above are implemented.

[0033] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the method for adjusting the peak wavelength of a light-emitting diode as described above are implemented.

[0034] One or more technical solutions proposed in this application have at least the following technical effects:

[0035] The present application first monitors the spectrum of the light-emitting diode in a working state, and determines the actual peak wavelength of the light-emitting diode based on the spectrum, so as to ensure that the actual peak wavelength of the LED can be accurately obtained by real-time monitoring and accurately measuring the light-emitting characteristics of the LED in the current working state, that is, the spectrum, and provide a reliable data basis for the subsequent peak wavelength adjustment; obtain the target peak wavelength of the light-emitting diode in the working state, and compare the actual peak wavelength with the target peak wavelength, so as to timely discover the occurrence of wavelength drift by comparing the actual peak wavelength with the target peak wavelength, thereby providing a basis for adjusting the input power of the LED to ensure the stability and accuracy of the spectrum; when it is detected that the actual peak wavelength has a wavelength drift compared with the target peak wavelength, the input power of each sub-light-emitting diode is adjusted according to the target peak wavelength to adjust the actual peak wavelength to the target peak wavelength, and by dynamically adjusting the input power of each sub-LED, the precise control of the peak wavelength of the LED is achieved, which not only reduces the influence of wavelength drift on the spectrum stability, but also improves the overall performance and reliability of the LED light source.

[0036] In summary, the present application avoids the problem of spectral instability caused by LED peak wavelength drift by performing spectral monitoring on an LED composed of multiple sub-LEDs, comparing the peak wavelengths in real time, and dynamically adjusting the input power of each sub-LED when the peak wavelength drifts. This achieves the technical effect of maintaining relatively stable peak wavelengths of LED light sources under different input powers, thereby improving the accuracy of spectral combination and the overall performance of the LED light-emitting system. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 A schematic diagram of a flow chart provided in Embodiment 1 of the method for adjusting the peak wavelength of a light emitting diode of the present application;

[0040] Figure 2 A schematic diagram of a flow chart provided for Embodiment 2 of the method for adjusting the peak wavelength of a light emitting diode of the present application;

[0041] Figure 3 A schematic diagram of a simplified process of a method for adjusting the peak wavelength of a light emitting diode provided in the second embodiment of the present application;

[0042] Figure 4 A schematic diagram of the structure of a method for adjusting the peak wavelength of a light emitting diode provided in the second embodiment of the present application;

[0043] Figure 5 This is a schematic diagram of the module structure of the peak wavelength adjustment device of the light emitting diode according to the embodiment of the present application;

[0044] Figure 6 Schematic diagram of the device structure of the hardware operating environment involved in the peak wavelength adjustment method of the light emitting diode in the embodiment of the present application.

[0045] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0046] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0047] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0048] The main solution of the embodiment of the present application is: monitor the spectrum of the light-emitting diode in the working state, and determine the actual peak wavelength of the light-emitting diode based on the spectrum; obtain the target peak wavelength of the light-emitting diode in the working state, and compare the actual peak wavelength with the target peak wavelength; when it is detected that the actual peak wavelength has a wavelength drift compared to the target peak wavelength, adjust the input power of each sub-light-emitting diode according to the actual peak wavelength and the target peak wavelength to adjust the actual peak wavelength to the target peak wavelength.

[0049] When implementing the work of spectral combination of multiple LEDs, the ideal situation is that after the LEDs are combined at different input powers, the peak wavelength of the resulting spectrum is relatively stable. However, due to the semiconductor characteristics and thermal characteristics of the LED itself, when the LED is driven at different powers, the peak wavelength of the LED will drift with the temperature change. Sometimes the degree of this drift phenomenon is large, which leads to stability problems in accurately determining the spectral intensity. Although the impact of this wavelength shift can be reduced through sophisticated semiconductor processes, this method of improving semiconductor production processes is often accompanied by high costs and operational complexity. Therefore, how to conveniently keep the peak wavelength of the LED light source relatively stable is a problem that needs to be solved urgently.

[0050] The present application provides a solution, which avoids the problem of spectral instability caused by LED peak wavelength drift by spectrally monitoring the LED composed of multiple sub-LEDs, comparing the peak wavelengths in real time, and dynamically adjusting the input power of each sub-LED when the peak wavelength drifts, thereby achieving the technical effect of maintaining the peak wavelength of the LED light source relatively stable under different input powers, thereby improving the accuracy of the spectral combination and the overall performance of the LED light-emitting system.

[0051] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device that can realize the above functions. The following takes an electronic device as an example to illustrate this embodiment and the following embodiments.

[0052] Based on this, the present application embodiment provides a method for adjusting the peak wavelength of a light emitting diode, referring to Figure 1 , Figure 1 FIG. 1 is a flow chart of a first embodiment of a method for adjusting a peak wavelength of a light emitting diode according to the present invention.

[0053] In this embodiment, the peak wavelength adjustment method of the light emitting diode is applied to a peak wavelength adjustment system, wherein the peak wavelength adjustment system includes a light emitting diode composed of a plurality of sub-light emitting diodes, and the peak wavelength adjustment method of the light emitting diode includes steps S10 to S30:

[0054] Step S10, monitoring the spectrum of the light emitting diode in a working state, and determining the actual peak wavelength of the light emitting diode based on the spectrum, wherein the spectrum is generated by mixing light from each sub-light emitting diode;

[0055] It should be noted that the working state refers to the state of the LED when it is emitting light normally; the actual peak wavelength refers to the wavelength of the strongest light in the spectrum emitted by the LED under this working state, that is, the wavelength corresponding to the point with the largest amplitude in the entire spectrum.

[0056] It is understandable that in order to understand the luminous performance of the LED in real time, step S10 is performed to avoid failure to timely discover changes in the peak wavelength in the spectrum, thereby achieving the effect of accurately grasping the actual luminous condition of the LED.

[0057] Exemplarily, the spectrum condition of the light-emitting diode when emitting light normally is monitored, and the wavelength corresponding to the point with the maximum amplitude in the spectrum is obtained, so as to determine the wavelength as the actual peak wavelength.

[0058] Step S20, obtaining a target peak wavelength of the light emitting diode in a working state, and comparing the actual peak wavelength with the target peak wavelength;

[0059] It should be noted that the target peak wavelength refers to the wavelength of the strongest light in the spectrum emitted by the LED in order to meet specific application requirements, that is, the wavelength corresponding to the point with the largest amplitude in the entire spectrum of the LED; wavelength drift refers to the deviation between the actual peak wavelength and the target peak wavelength.

[0060] It is understandable that, since the spectrum of the LED often changes over time or is affected by temperature in actual monitoring and cannot conform to the expected state, performing step S20 can avoid the problem of not being able to correctly identify the wavelength drift phenomenon that occurs in the spectrum, thereby causing the optical performance of the LED to be unstable, and provides an effective and reliable judgment basis for subsequent processing of the wavelength drift problem.

[0061] In a feasible implementation manner, step S20 may further include steps S201 to S203 after step S20:

[0062] Step S201, determining a deviation between the actual peak wavelength and the target peak wavelength;

[0063] It should be noted that the deviation refers to the difference between the actual peak wavelength and the target peak wavelength.

[0064] It is understandable that in order to quantify the degree of deviation of the LED spectrum, step S201 is performed to avoid the inability to accurately determine whether the spectrum is within an acceptable range, thereby achieving the effect of accurately evaluating the stability of the peak wavelength of the LED spectrum.

[0065] Step S202, if the deviation is less than or equal to a preset value, returning to the step of monitoring the spectrum of the light emitting diode in the working state;

[0066] It is understandable that in order to determine whether the peak wavelength deviation in the current LED spectrum is within an acceptable error range, step S202 is performed, which can avoid unnecessary adjustments to small deviations, thereby reducing unnecessary power consumption and system burden, and achieving optimized operation and energy saving of the system.

[0067] Step S203: If the deviation is greater than a preset value, it is determined that the actual peak wavelength has a wavelength drift compared to the target peak wavelength.

[0068] It is understandable that in order to determine whether adjustment measures are needed, step S203 is performed, which can avoid the problem of the luminous performance of the LED light source being affected by the wavelength drift, thereby ensuring that the spectral quality of the LED light source can be improved in time, and providing an effective and reliable judgment basis for achieving the long-term stability and reliability of the LED light source.

[0069] In this embodiment, by adopting the means of real-time monitoring and comparison of the deviation between the actual peak wavelength and the target peak wavelength, the problems of spectral instability and performance degradation caused by LED wavelength drift are avoided, real-time feedback and adjustment of LED input power are achieved, and the peak wavelength stability and spectral characteristics of the LED light source are ensured, thereby achieving the effect of optimizing the LED light source performance and improving the system reliability.

[0070] Step S30, when it is detected that the actual peak wavelength has a wavelength drift compared to the target peak wavelength, the input power of each sub-LED is adjusted according to the target peak wavelength to adjust the actual peak wavelength to the target peak wavelength.

[0071] It should be noted that, depending on the wavelength range of the LED device, the drift amount varies from a few nm to dozens of nm. However, for LEDs with similar wavelengths, their wavelength drift characteristics are similar. Therefore, each sub-LED configured by the peak wavelength adjustment system can be a sub-light-emitting diode whose difference between the corresponding peak wavelengths under the same input power is less than the preset spectrum half-height width value, wherein the preset spectrum half-height width value (Full Width at Half Maximum, FWHM) refers to the wavelength range when the spectrum intensity drops to half of the peak value. This value is a parameter to measure the spectrum width or spectrum purity, and is used to describe the wavelength range corresponding to half of the peak intensity in the spectrum. In LED technology, a smaller spectrum half-height width value usually means that the spectrum is more concentrated and the color is purer, while a larger spectrum half-height width value means that the spectrum distribution is wider and the color may not be so pure. Therefore, this parameter is used to ensure that the peak wavelength difference of each sub-light-emitting diode under the same input power is small enough to maintain the consistency of the spectrum and the stability of the color. By configuring the sub-LEDs such that the difference between the peak wavelengths corresponding to the same input power is less than the preset spectral half-width value, that is, using LEDs with similar wavelengths (such as the sub-LEDs in this embodiment preferably having a peak wavelength difference between 5 and 10 nm), the problems of spectral discontinuity and color inconsistency caused by excessive differences in LED peak wavelengths can be avoided, thereby achieving spectral smoothness and color uniformity of the LED combination light source.

[0072] It can be understood that when wavelength drift occurs in the spectrum of the LED, it will affect the optical performance required by the LED when meeting specific application needs. Therefore, step S30 is performed. When wavelength drift is found, the actual peak wavelength is corrected by adjusting the input power. This can effectively avoid the problem of excessive wavelength drift, achieve precise control and stable output of the peak wavelength of the LED light source, and thus improve the stability and reliability of the spectrum combination.

[0073] Exemplarily, two sub-LEDs are configured in an LED, and when it is detected that the actual peak wavelength has a wavelength drift compared to the target peak wavelength, the input powers acting on the two sub-LEDs are adjusted respectively according to the target peak wavelength. For example: when the total input power of the current LED is constant, if the actual peak wavelength is longer than the target peak wavelength, the input power of the sub-LED whose peak wavelength varies more greatly with input power among the two sub-LEDs is appropriately reduced, and the input power of the other LED is increased, that is, the power distribution ratio between the two sub-LEDs is tilted toward the sub-LED whose peak wavelength varies less with input power; if the actual peak wavelength is shorter than the target peak wavelength, the input power of the sub-LED whose peak wavelength varies more greatly with input power among the two sub-LEDs is appropriately increased, and the input power of the other LED is reduced, that is, the power distribution ratio between the two sub-LEDs is tilted toward the sub-LED whose peak wavelength varies more greatly with input power, so as to adjust the actual peak wavelength in the adjusted LED spectrum to be close to the target peak wavelength.

[0074] In a feasible implementation manner, the step of adjusting the input power of each sub-LED according to the target peak wavelength in step S30 may include steps S31 to S32:

[0075] Step S31, obtaining the current input power of the light emitting diode, and querying a preset relationship table according to the current input power and the target peak wavelength to obtain the reference input power of each sub-light emitting diode under the current input power in the preset relationship table;

[0076] It should be noted that the current input power refers to the total input power input to the LED at the current moment, that is, the sum of the input powers input to each sub-LED; the reference input power refers to the input power value that each sub-LED should use in order to achieve the target peak wavelength.

[0077] It can be understood that in order to find the appropriate power setting under the current input power according to the target peak wavelength, step S31 is performed, which can avoid the problem of spectral deviation caused by incorrect input power setting from being unable to be properly resolved, thereby providing a reliable data basis for achieving precise control of the luminous characteristics of the LED.

[0078] Exemplarily, the current input power of the light emitting diode is obtained, and a preset relationship table is queried according to the current input power and the target peak wavelength to obtain the following Table 1:

[0079]

[0080]

[0081] Table 1

[0082] The central wavelength in the table is the peak wavelength, and the combined central wavelength is the peak wavelength of the LED composed of LED A and LED B. The above table is a schematic table of the preset relationship table corresponding to the target peak wavelength of 500nm under the current input power. The table shows the central wavelengths of LED A and LED B, and the central wavelength of the LED composed of LED A and LED B when different proportions of input power are allocated to LED A and LED B under the condition of a certain current input power. Then determine the reference input power of each sub-light emitting diode in the table under the current input power, that is, the power of LED A and LED B.

[0083] In a feasible implementation manner, the preset relationship table records the recorded peak wavelengths of the spectra obtained by each sub-light emitting diode under different recorded input power combinations under different current input powers. The step of querying the preset relationship table according to the current input power and the target peak wavelength in step S31 to obtain the reference input power of each sub-light emitting diode under the current input power in the preset relationship table may include steps S311 to S312:

[0084] Step S311, determining the corresponding recorded peak wavelength in the preset relationship table according to the current input power and the target peak wavelength;

[0085] It should be noted that the recorded peak wavelength refers to the peak wavelength of the sub-light emitting diode under a specific input power recorded through previous tests in the preset relationship table.

[0086] It can be understood that in order to find the known wavelength value closest to the target peak wavelength under the current input power in the preset relationship table (i.e., record the peak wavelength), step S311 is performed, which can avoid the problem of unstable LED performance caused by failure to match the target peak wavelength, thereby achieving accurate matching of the target peak wavelength.

[0087] Step S312: Using the recorded input power of each sub-LED associated with the recorded peak wavelength in the preset relationship table as each reference input power.

[0088] It should be noted that the recorded input power refers to the input power value corresponding to the specific recorded peak wavelength in the preset relationship table.

[0089] It can be understood that in order to determine the input power of each sub-LED that is closest to the target peak wavelength, step S312 is performed, which can avoid the problem of deviation in LED luminous performance caused by incorrect input power, so as to ensure that the LED will work normally according to the expected target, thereby achieving stable output of the LED light source.

[0090] Exemplarily, when two sub-LEDs are configured in an LED, a preset relationship table is queried according to the target peak wavelength to obtain a recorded peak wavelength in the preset relationship table that is closest to the target peak wavelength at the current input power, and the recorded input powers of the two sub-LEDs associated with the recorded peak wavelengths are used as reference input powers of the two sub-LEDs.

[0091] In this embodiment, by searching a preset relationship table and matching the target peak wavelength to determine the corresponding recorded peak wavelength, and using the associated recorded input power as the reference input power, the problem of mismatch between the actual peak wavelength of the spectrum and the target peak wavelength caused by improper LED power setting is avoided, and the input power of each sub-LED is accurately adjusted according to the target peak wavelength, thereby ensuring the peak wavelength stability and spectrum quality of the LED light source, thereby achieving the effect of optimizing the LED light source performance and improving the system reliability.

[0092] Step S32, adjusting the input power of each sub-light emitting diode to the reference input power;

[0093] It is understandable that due to the current lack of an effective means of regulation for the peak wavelength drift problem, step S32 is performed to adjust the actual input power of each sub-light-emitting diode according to the reference input power in the preset relationship table. This can avoid the problem of unstable LED performance caused by improper adjustment of the input power, ensure that the LED emits light as expected, and thus achieve stable output of the LED light source.

[0094] In this embodiment, the reference input power of each sub-light-emitting diode is obtained by querying the preset relationship table, and its actual input power is adjusted to the reference value, thereby avoiding the problem of spectral peak wavelength drift and instability caused by improper LED power setting, achieving precise control of the peak wavelength of the LED light source, and ensuring the stability and reliability of the spectrum after mixing, thereby achieving the effect of optimizing the performance of the LED light source and improving the spectral stability.

[0095] The present embodiment provides a method for adjusting the peak wavelength of a light-emitting diode. By performing spectral monitoring on an LED composed of a plurality of sub-LEDs, performing real-time comparison of the peak wavelengths, and dynamically adjusting the input power of each sub-LED when a wavelength drift occurs at the peak wavelength, the problem of spectral instability caused by peak wavelength drift of the LED is avoided, and the technical effect of maintaining a relatively stable peak wavelength of the LED light source under different input powers is achieved, thereby improving the accuracy of the spectral combination and the overall performance of the LED light-emitting system.

[0096] In a feasible implementation, the peak wavelength adjustment system further includes a light mixing component, and each sub-LED generates a spectrum of the light-emitting diode by mixing light through the light mixing component, wherein the light mixing component includes at least a plurality of multi-layer light scattering plates, and after step S32, steps S331 to S332 may be included:

[0097] Step S331, adjusting the emission angle of each sub-LED after the input power is adjusted;

[0098] It should be noted that the emission angle refers to the angle of the light emitted by the sub-LED relative to the normal line of the surface of the sub-LED.

[0099] It is understandable that since the process of using multiple sub-LEDs for mixing light often leads to poor light mixing effect, step S331 is performed to avoid the problem of poor light mixing effect caused by angle problems by adjusting the emission angle of each LED, thereby achieving a more efficient and uniform lighting effect.

[0100] Illustratively, the mounting bracket of each sub-LED is slightly rotated or tilted through a manual or automatic control system to change the direction of its emitted light beam, i.e., the emission angle; secondly, the effect of the emission angle adjustment is monitored and evaluated in real time based on the light intensity distribution and color uniformity in the mixed light area; then, the emission angle of each sub-LED is iteratively fine-tuned until the light intensity distribution in the mixed light area is uniform and the color consistency reaches an optimal state; finally, the emission angle of each sub-LED is locked to ensure a stable mixed light effect.

[0101] Step S332, mixing the emission lights generated by the sub-light emitting diodes after the emission angles are adjusted through the multi-layer light scattering plate to obtain a new spectrum of the light emitting diodes in a working state.

[0102] It should be noted that the multi-layer uniform light scattering plate refers to an optical element having a multi-level structure and can scatter incident light in multiple directions, thereby achieving uniform distribution of light.

[0103] It can be understood that in order to utilize the light scattering characteristics of the multi-layer light-scattering plate, step S332 is performed to avoid the problem of uneven illumination caused by direct emission of light, thereby achieving uniform mixing of the final spectrum and consistency of illumination by introducing the multi-layer light-scattering plate.

[0104] Exemplarily, a multi-layer light-averaging scattering plate is placed in front of each sub-LED with an adjusted emission angle, ensuring that the incident surface of the scattering plate is parallel to the emission light beam of the LED; then, the multi-layer structure inside the scattering plate is used to reflect and scatter the incident light multiple times, so that the light beams of each sub-LED can be evenly mixed after passing through the scattering plate, thereby forming a uniform light intensity distribution and a consistent color mixing effect on the exit surface, thereby achieving efficient light mixing.

[0105] In this embodiment, by adjusting the emission angle of each adjusted sub-light emitting diode and mixing the adjusted emission light using a multi-layer light-averaging scattering plate, the problems of uneven illumination and spectral instability caused by fixed LED emission angles and uneven light distribution are avoided, and the optimization of the illumination angle and uniform mixing of the spectrum are achieved, thereby achieving the effect of improving the illumination uniformity and spectral consistency.

[0106] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 2 The peak wavelength adjustment method of the light emitting diode further includes steps S01 to S03:

[0107] Step S01, for any sub-LED, monitoring the test peak wavelength of the sub-LED under different test input powers;

[0108] It should be noted that the test input power refers to the specific power value applied to the sub-LED during the test; the test peak wavelength refers to the peak wavelength in the spectrum emitted by the sub-LED under the corresponding test input power.

[0109] It is understandable that in order to collect LED performance data at different powers, step S01 is performed to avoid the inability to accurately understand the specific drift of the peak wavelength of the LED with input power due to lack of data, thereby achieving detailed analysis and understanding of the LED performance.

[0110] Step S02, recording each test input power and the test peak wavelength of the sub-light emitting diode under each test input power, obtaining each recorded peak wavelength under each recorded input power, and constructing a preset relationship sub-table of the sub-light emitting diode based on each recorded peak wavelength under each recorded input power;

[0111] It should be noted that the preset relationship sub-table refers to a table established for each sub-light emitting diode, in which the relationship between different test input powers and their corresponding test peak wavelengths is recorded.

[0112] It is understandable that in order to establish a relationship model between power and wavelength, step S02 is performed, which can avoid the problem of being unable to predict and control the light-emitting characteristics of the LED due to the lack of a relationship model, thereby achieving accurate prediction and control of the peak wavelength of the LED.

[0113] Step S03, after traversing each sub-LED, obtain the preset relationship table based on the combination of each preset relationship sub-table.

[0114] It is understandable that, since the LED is composed of multiple sub-LEDs, in order to adjust the peak wavelength in the final LED spectrum to the target value, step S03 is performed to integrate the data of all the sub-light-emitting diodes to create a comprehensive relationship table, that is, a preset relationship table. This can avoid the problem of not considering the reasonable adaptation with the remaining sub-LEDs when adjusting the input power of any sub-LED, thereby providing an accurate and reliable adjustment data basis for optimizing and stabilizing the spectrum combination of the entire LED system, thereby improving the overall performance and reliability of the system.

[0115] In this embodiment, by testing and recording the peak wavelength of LEDs at different powers, establishing and combining relational sub-tables, the problems of insufficient LED-related data and unpredictable actual performance are avoided, precise control and technical optimization of LED performance are achieved, and efficient and stable operation of the LED system is ensured.

[0116] For example, in order to help understand the implementation process of the peak wavelength adjustment method of the light emitting diode obtained by combining this embodiment with the above-mentioned embodiment 1, please refer to Figure 3 , Figure 3 A brief schematic flow chart of a method for adjusting the peak wavelength of a light emitting diode is provided, specifically:

[0117] First, the actual peak wavelength of the LED is monitored by monitoring the spectrum of the LED. If the actual peak wavelength does not drift, the actual peak wavelength of the LED is monitored; if the actual peak wavelength drifts, the preset relationship table is queried based on the current input power of the LED and the target peak wavelength, so as to adjust the current input power of each LED according to the recorded input power of each sub-LED corresponding to the target peak wavelength at the current input power in the preset relationship table, wherein the preset relationship table is obtained by testing each sub-LED at different test input powers, and the data in the preset relationship table are the test input powers recorded during the test and the test peak wavelengths of each sub-LED at each test input power.

[0118] For further information, please refer to Figure 4 , Figure 4A simplified structural schematic diagram of a peak wavelength adjustment method for a light emitting diode is provided, in which L1 and L2 respectively represent two sub-LEDs configured in an LED, M represents a light mixing component, C represents an input power distribution circuit, which is used to adjust the input power of the two sub-LEDs and is connected to C and M respectively, and B represents a circuit board, which is connected to L1, L2 and C. In the figure, a larger spatial distance can be set between L1 and L2 and M to achieve more uniform light mixing, and at the same time, L1 and L2 achieve better light mixing effects through a module or packaging structure with reduced size.

[0119] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the peak wavelength adjustment method of the light-emitting diode of the present application. More simple transformations based on this technical concept are all within the protection scope of the present application.

[0120] The present application also provides a device for adjusting the peak wavelength of a light emitting diode. Figure 5 , the peak wavelength adjustment device of the light emitting diode is applied to a peak wavelength adjustment system, wherein the peak wavelength adjustment system includes a light emitting diode composed of a plurality of sub-light emitting diodes, and the peak wavelength adjustment device of the light emitting diode includes:

[0121] A monitoring module 10, for monitoring the spectrum of the light emitting diode in a working state, and determining the actual peak wavelength of the light emitting diode based on the spectrum, wherein the spectrum is generated by mixing the light of each sub-light emitting diode;

[0122] A comparison module 20, used for obtaining a target peak wavelength of the light emitting diode in a working state, and comparing the actual peak wavelength with the target peak wavelength;

[0123] The adjustment module 30 is used to adjust the input power of each sub-LED according to the target peak wavelength when it is detected that the actual peak wavelength has a wavelength drift compared to the target peak wavelength, so as to adjust the actual peak wavelength to the target peak wavelength.

[0124] Optionally, the adjustment module 30 is further used for:

[0125] Acquire the current input power of the light emitting diode, and query a preset relationship table according to the current input power and the target peak wavelength to obtain the reference input power of each sub-light emitting diode under the current input power in the preset relationship table;

[0126] The input power of each sub-light emitting diode is adjusted to the reference input power.

[0127] Optionally, the adjustment module 30 is further used for:

[0128] Determine the corresponding recorded peak wavelength in the preset relationship table according to the current input power and the target peak wavelength;

[0129] The recorded input power of each sub-light emitting diode associated with the recorded peak wavelength in the preset relationship table is used as each reference input power.

[0130] Optionally, the peak wavelength adjustment system further includes a light mixing component, and each sub-LED generates a spectrum of the light-emitting diode by mixing light through the light mixing component, wherein the light mixing component includes at least a plurality of light scattering plates, and the adjustment module 30 is further used for:

[0131] Adjusting the emission angle of each sub-light emitting diode after the input power is adjusted;

[0132] The emission light generated by each sub-light emitting diode after the emission angle is adjusted is mixed by the multi-layer light scattering plate to obtain a new spectrum of the light emitting diode in the working state.

[0133] Optionally, the test module 40 in the device for adjusting the peak wavelength of a light emitting diode is used for:

[0134] For any sub-light emitting diode, monitoring the test peak wavelength of the sub-light emitting diode under different test input powers;

[0135] Recording each test input power and the test peak wavelength of the sub-light emitting diode at each test input power to obtain each recorded peak wavelength at each recorded input power, and constructing a preset relationship sub-table of the sub-light emitting diode based on each recorded peak wavelength at each recorded input power;

[0136] After traversing each sub-LED, the preset relationship table is obtained based on the combination of each preset relationship sub-table.

[0137] Optionally, the monitoring module 10 is further used for:

[0138] determining an amount of deviation between the actual peak wavelength and the target peak wavelength;

[0139] If the deviation is less than or equal to the preset value, returning to the step of monitoring the spectrum of the light emitting diode in the working state;

[0140] If the deviation is greater than a preset value, it is determined that the actual peak wavelength has a wavelength drift compared to the target peak wavelength.

[0141] Optionally, the difference between the corresponding peak wavelengths of the sub-light emitting diodes configured by the peak wavelength adjustment system under the same input power is smaller than a preset spectral half-width value.

[0142] The peak wavelength adjustment device for light emitting diodes provided in the present application adopts the peak wavelength adjustment method for light emitting diodes in the above-mentioned embodiment, and can solve the technical problem of how to conveniently keep the peak wavelength of the LED light source relatively stable. Compared with the prior art, the beneficial effects of the peak wavelength adjustment device for light emitting diodes provided in the present application are the same as the beneficial effects of the peak wavelength adjustment method for light emitting diodes provided in the above-mentioned embodiment, and other technical features in the peak wavelength adjustment device for light emitting diodes are the same as the features disclosed in the above-mentioned embodiment method, and are not described in detail here.

[0143] The present application provides an electronic device, which includes: at least one processor; and a memory that is communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the peak wavelength adjustment method of the light-emitting diode in the above-mentioned embodiment 1.

[0144] Reference below Figure 6 , which shows a schematic diagram of the structure of an electronic device suitable for implementing the embodiments of the present application. The electronic devices in the embodiments of the present application may include but are not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 6 The electronic device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0145] like Figure 6As shown, the electronic device may include a processing device 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the electronic device are also stored. The processing device 1001, ROM1002, and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the electronic device to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows an electronic device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems can be implemented or have alternatively.

[0146] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0147] The electronic device provided by the present application adopts the peak wavelength adjustment method of the light emitting diode in the above embodiment, which can solve the technical problem of how to conveniently keep the peak wavelength of the LED light source relatively stable. Compared with the prior art, the beneficial effects of the electronic device provided by the present application are the same as the beneficial effects of the peak wavelength adjustment method of the light emitting diode provided by the above embodiment, and the other technical features in the electronic device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0148] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0149] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0150] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the peak wavelength adjustment method of the light-emitting diode in the above-mentioned embodiment.

[0151] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM: Random Access Memory), a read-only memory (ROM: Read Only Memory), an erasable programmable read-only memory (EPROM: Erasable Programmable Read Only Memory or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM: CD-Read Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency: Radio Frequency), etc., or any suitable combination of the above.

[0152] The computer-readable storage medium may be included in the electronic device, or may exist independently without being installed in the electronic device.

[0153] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by an electronic device, the electronic device: monitors the spectrum of the light-emitting diode in a working state, and determines the actual peak wavelength of the light-emitting diode based on the spectrum; obtains the target peak wavelength of the light-emitting diode in a working state, and compares the actual peak wavelength with the target peak wavelength; and when it is detected that the actual peak wavelength has a wavelength drift compared to the target peak wavelength, adjusts the input power of each sub-light-emitting diode according to the target peak wavelength to adjust the actual peak wavelength to the target peak wavelength.

[0154] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0155] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0156] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0157] The readable storage medium provided in the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned method for adjusting the peak wavelength of a light-emitting diode, and can solve the technical problem of how to conveniently keep the peak wavelength of an LED light source relatively stable. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in the present application are the same as the beneficial effects of the method for adjusting the peak wavelength of a light-emitting diode provided in the above-mentioned embodiment, and will not be described in detail here.

[0158] The present application also provides a computer program product, including a computer program, which implements the steps of the peak wavelength adjustment method of a light emitting diode as described above when executed by a processor.

[0159] The computer program product provided by the present application can solve the technical problem of how to conveniently keep the peak wavelength of the LED light source relatively stable. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the peak wavelength adjustment method of the light emitting diode provided by the above embodiment, which will not be repeated here.

[0160] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A method for adjusting the peak wavelength of a light emitting diode, characterized in that: Applied to a peak wavelength adjustment system, wherein the peak wavelength adjustment system includes a light emitting diode composed of a plurality of sub-light emitting diodes, and a peak wavelength adjustment method of the light emitting diode includes: Monitoring the spectrum of the light-emitting diode in a working state, and determining the actual peak wavelength of the light-emitting diode based on the spectrum, wherein the spectrum is generated by mixing the light of each sub-light-emitting diode; Obtaining a target peak wavelength of the light emitting diode in a working state, and comparing the actual peak wavelength with the target peak wavelength; When it is detected that the actual peak wavelength has a wavelength drift compared to the target peak wavelength, the input power of each sub-LED is adjusted according to the target peak wavelength to adjust the actual peak wavelength to the target peak wavelength.

2. The method for adjusting the peak wavelength of a light emitting diode according to claim 1, wherein: The step of adjusting the input power of each sub-light emitting diode according to the target peak wavelength comprises: Acquire the current input power of the light emitting diode, and query a preset relationship table according to the current input power and the target peak wavelength to obtain the reference input power of each sub-light emitting diode under the current input power in the preset relationship table; The input power of each sub-light emitting diode is adjusted to the reference input power.

3. The method for adjusting the peak wavelength of a light emitting diode according to claim 2, wherein: The step of querying a preset relationship table according to the current input power and the target peak wavelength to obtain the reference input power of each sub-light emitting diode at the current input power in the preset relationship table comprises: Determine the corresponding recorded peak wavelength in the preset relationship table according to the current input power and the target peak wavelength; The recorded input power of each sub-light emitting diode associated with the recorded peak wavelength in the preset relationship table is used as each reference input power.

4. The method for adjusting the peak wavelength of a light emitting diode according to claim 2, wherein: The peak wavelength adjustment system further includes a light mixing component, and each sub-LED generates a spectrum of the LED by mixing light through the light mixing component, wherein the light mixing component includes at least a plurality of light scattering plates, and after the step of adjusting the input power of each sub-LED to the reference input power, the step further includes: Adjusting the emission angle of each sub-light emitting diode after the input power is adjusted; The emission light generated by each sub-light emitting diode after the emission angle is adjusted is mixed by the multi-layer light scattering plate to obtain a new spectrum of the light emitting diode in the working state.

5. The method for adjusting the peak wavelength of a light emitting diode according to claim 2, wherein: The peak wavelength adjustment method of the light emitting diode further includes: For any sub-light emitting diode, monitoring the test peak wavelength of the sub-light emitting diode under different test input powers; Recording each test input power and the test peak wavelength of the sub-light emitting diode at each test input power to obtain each recorded peak wavelength at each recorded input power, and constructing a preset relationship sub-table of the sub-light emitting diode based on each recorded peak wavelength at each recorded input power; After traversing each sub-LED, the preset relationship table is obtained based on the combination of each preset relationship sub-table.

6. The method for adjusting the peak wavelength of a light emitting diode according to claim 1, wherein: After the step of comparing the actual peak wavelength with the target peak wavelength, the following step further comprises: determining an amount of deviation between the actual peak wavelength and the target peak wavelength; If the deviation is less than or equal to the preset value, returning to the step of monitoring the spectrum of the light emitting diode in the working state; If the deviation is greater than a preset value, it is determined that the actual peak wavelength has a wavelength drift compared to the target peak wavelength.

7. The method for adjusting the peak wavelength of a light emitting diode according to claim 1, wherein: The difference between the corresponding peak wavelengths of the sub-light emitting diodes configured by the peak wavelength adjustment system under the same input power is smaller than the preset spectrum half-height width.

8. A peak wavelength adjustment device for a light emitting diode, characterized in that: Applicable to a peak wavelength adjustment system, wherein the peak wavelength adjustment system includes a light emitting diode composed of a plurality of sub-light emitting diodes, and the peak wavelength adjustment device of the light emitting diode includes: A monitoring module, used for monitoring the spectrum of the light emitting diode in a working state, and determining the actual peak wavelength of the light emitting diode based on the spectrum, wherein the spectrum is generated by mixing the light of each sub-light emitting diode; A comparison module, used for obtaining a target peak wavelength of the light emitting diode in a working state, and comparing the actual peak wavelength with the target peak wavelength; The adjustment module is used to adjust the input power of each sub-light emitting diode according to the target peak wavelength when it is detected that the actual peak wavelength has a wavelength drift compared to the target peak wavelength, so as to adjust the actual peak wavelength to the target peak wavelength.

9. An electronic device, characterized in that: The device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the method for adjusting the peak wavelength of a light emitting diode according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the method for adjusting the peak wavelength of a light-emitting diode according to any one of claims 1 to 7 are implemented.

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