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

Abstract

The application discloses a peak wavelength adjusting method, device and equipment of a light emitting diode and a medium, relates to the technical field of semiconductor circuit control, and comprises the following 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 the target peak wavelength of the light emitting diode in the working state, and comparing the actual peak wavelength with the target peak wavelength; in the case where the actual peak wavelength is detected to have wavelength drift compared with 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. When the peak wavelength of the LED composed of a plurality of sub-LEDs appears wavelength drift, 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, the accuracy of spectrum combination is improved, and the overall performance of the LED light emitting system is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of semiconductor circuit control, and particularly relates to a peak wavelength adjustment method and device of a light emitting diode, an electronic device and a storage medium. BACKGROUND

[0002] In the work of implementing a plurality of LEDs (Light Emitting Diode) to perform spectrum combination, the ideal condition is that the peak wavelength of the obtained spectrum is relatively stable after the combination of the LEDs under different input powers. However, due to the semiconductor characteristics and thermal characteristics of the LED itself, the peak wavelength of the LED will drift with the change of temperature when the LED is driven by different powers. Sometimes, the offset degree of the drift phenomenon is large, which leads to stability problems in accurately determining the spectrum intensity and the like. Although the influence of the wavelength offset can be reduced through a fine semiconductor process, such a method of improving the semiconductor production process is often accompanied by high cost and complexity in operation.

[0003] Therefore, how to conveniently keep the peak wavelength of the LED light source relatively stable is a problem to be solved at present. SUMMARY

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

[0005] To achieve the above-mentioned purpose, the present application provides a peak wavelength adjustment method of a light emitting diode, which is applied to a peak wavelength adjustment system, wherein the peak wavelength adjustment system comprises a light emitting diode composed of a plurality of sub light emitting diodes, and the peak wavelength adjustment method of the light emitting diode comprises the following steps.

[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 mixed light of each sub light emitting diode;

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

[0008] In the case that the actual peak wavelength is detected to have wavelength drift compared with 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.

[0009] In an embodiment, the step of adjusting the input power of each sub light emitting diode according to the target peak wavelength comprises:

[0010] obtaining a 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 reference input powers of each sub light emitting diode under the current input power in the preset relationship table;

[0011] adjusting the input power of each sub light emitting diode to the reference input power.

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

[0013] determining a record peak wavelength corresponding to a record in the preset relationship table according to the current input power and the target peak wavelength;

[0014] taking record input powers of each sub light emitting diode associated with the record peak wavelength in the preset relationship table as the reference input powers.

[0015] In an embodiment, the peak wavelength adjustment system further comprises a light mixing component, and each sub light emitting diode generates a spectrum of the light emitting diode by light mixing through the light mixing component, wherein the light mixing component at least comprises a multi-layer light uniform scattering plate, and the step of adjusting the input power of each sub light emitting diode to the reference input power further comprises:

[0016] adjusting an emission angle of each sub light emitting diode after input power adjustment;

[0017] mixing light emitted by each sub light emitting diode after emission angle adjustment through the multi-layer light uniform scattering plate to obtain a new spectrum of the light emitting diode in a working state.

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

[0019] monitoring a test peak wavelength of each 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 under each test input power to obtain each record peak wavelength under each record input power, and constructing a preset relationship sub-table of the sub light emitting diode based on each record peak wavelength under each record input power;

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

[0022] In an embodiment, the step of comparing the actual peak wavelength with the target peak wavelength further comprises:

[0023] determining a deviation between the actual peak wavelength and the target peak wavelength;

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

[0025] if the deviation is greater than the preset amount, determining that the actual peak wavelength has wavelength drift relative to the target peak wavelength.

[0026] In an embodiment, the difference between the corresponding peak wavelengths of each of the sub light emitting diodes configured in the peak wavelength adjustment system is less than a preset spectral full width at half maximum value under the same input power.

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

[0028] a monitoring module configured to monitor a spectrum of the light emitting diode in a working state and determine an actual peak wavelength of the light emitting diode based on the spectrum, wherein the spectrum is generated by mixed light of each of the sub light emitting diodes;

[0029] a comparison module configured to obtain a target peak wavelength of the light emitting diode in the working state and compare the actual peak wavelength with the target peak wavelength;

[0030] an adjustment module configured to, in a case where it is detected that the actual peak wavelength has wavelength drift relative to the target peak wavelength, adjust input power of each of the sub light emitting diodes according 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 object, the present application also proposes an electronic device, which comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and 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 object, the present application also provides a storage medium, which is a computer readable storage medium, and a computer program is stored on the storage medium, and the computer program realizes the steps of the peak wavelength adjusting method of the light emitting diode when executed by a processor.

[0033] In addition, to achieve the above object, the present application also provides a computer program product, which comprises a computer program, and the computer program realizes the steps of the peak wavelength adjusting method of the light emitting diode when executed by a processor.

[0034] The one or more technical solutions provided by the present application have at least the following technical effects:

[0035] The present application first monitors the spectrum of the light emitting diode in the 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 monitoring and accurately measuring the light emitting characteristics (spectrum) of the LED in the current working state in real time, and providing a reliable data basis for subsequent peak wavelength adjustment; the target peak wavelength of the light emitting diode in the working state is obtained, and the actual peak wavelength and the target peak wavelength are compared, so that the wavelength drift phenomenon can be found in time by comparing the actual peak wavelength with the target peak wavelength, thereby providing a basis for adjusting the input power of the LED, so as to ensure the stability and accuracy of the spectrum; in the case that the actual peak wavelength is found to have 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, so as to adjust the actual peak wavelength to the target peak wavelength, and the input power of each sub LED is dynamically adjusted, so as to realize accurate control of the peak wavelength of the LED, not only reducing the influence of wavelength drift on the stability of the spectrum, but also improving the overall performance and reliability of the LED light source.

[0036] In summary, the present application avoids the problem of unstable spectrum caused by the peak wavelength drift of the LED by monitoring the spectrum of the LED composed of multiple sub LEDs, comparing the peak wavelength in real time, and dynamically adjusting the input power of each sub LED when the peak wavelength drifts, realizes the technical effect of keeping the peak wavelength of the LED light source relatively stable under different input powers, and improves the accuracy of spectrum combination and the overall performance of the LED light emitting system. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application.

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

[0039] Figure 1 A flowchart provided by the peak wavelength adjustment method for the light emitting diode according to the first embodiment of the present application;

[0040] Figure 2 A flowchart provided by the peak wavelength adjustment method for the light emitting diode according to the second embodiment of the present application;

[0041] Figure 3 A brief flowchart of the peak wavelength adjustment method for the light emitting diode according to the second embodiment of the present application;

[0042] Figure 4 A brief structural diagram of the peak wavelength adjustment method for the light emitting diode according to the second embodiment of the present application;

[0043] Figure 5 A module structural diagram of the peak wavelength adjustment device for the light emitting diode according to the embodiment of the present application;

[0044] Figure 6 A device structural diagram of the hardware running environment involved in the peak wavelength adjustment method for the light emitting diode according to the embodiment of the present application.

[0045] The object implementation, functional features and advantages of the present application will be further described with reference to the embodiments and 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 solutions of the present application, the specific embodiments will be described in detail with reference to the accompanying drawings and the specific embodiments.

[0048] The main solution of the embodiment of the present application is: monitoring the spectrum of the light emitting diode in the working state, and determining the actual peak wavelength of the light emitting diode based on the spectrum; obtaining the target peak wavelength of the light emitting diode in the working state, and comparing the actual peak wavelength with the target peak wavelength; in the case that the actual peak wavelength is detected to have wavelength drift compared with the target peak wavelength, adjusting the input power of each sub light emitting diode according to the actual peak wavelength and the target peak wavelength, so as to adjust the actual peak wavelength to the target peak wavelength.

[0049] Since in the implementation of the work of a plurality of LEDs for spectral combination, the ideal condition is that the peak wavelength of the resulting spectrum is relatively stable after the combination of LEDs at different input powers, but due to the semiconductor characteristics and thermal characteristics of the LED itself, the peak wavelength of the LED will drift with the change of temperature when the LED is driven at different powers, sometimes the offset of this drift phenomenon is large, which leads to stability problems in accurately determining the spectral intensity and the like. Although the influence of this wavelength shift can be reduced by fine semiconductor process, this method of improving semiconductor production process often accompanies higher cost and complexity in operation. Therefore, how to conveniently keep the peak wavelength of the LED light source relatively stable is a problem that needs to be solved at present.

[0050] The present application provides a solution, by monitoring the spectrum of the LED composed of a plurality of sub-LEDs, comparing the peak wavelength in real time, and dynamically adjusting the input power of each sub-LED when the peak wavelength drifts, avoiding the problem of unstable spectrum caused by the drift of the peak wavelength of the LED, realizing the technical effect of keeping the peak wavelength of the LED light source relatively stable under different input powers, thereby improving the accuracy of spectral combination and the overall performance of the LED lighting system.

[0051] It should be noted that the execution subject of the embodiment can be a computing service device with data processing, network communication and program running functions, such as tablet computers, personal computers, mobile phones and the like, or an electronic device capable of realizing the above functions. The embodiments and the following embodiments will be described below with the electronic device as an example.

[0052] Based on this, the present application embodiment provides a peak wavelength adjustment method of a light-emitting diode, referring to Figure 1 , Figure 1 is a flowchart of the first embodiment of the peak wavelength adjustment method of the light-emitting diode of the present application.

[0053] In the 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 comprises a light-emitting diode composed of a plurality of sub-light-emitting diodes, and the peak wavelength adjustment method of the light-emitting diode comprises steps S10-S30:

[0054] Step S10, monitoring the spectrum of the light-emitting diode in the 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 of each sub-light-emitting diode;

[0055] It should be noted that the working state refers to the state of the LED in normal light emission; the actual peak wavelength refers to the wavelength of the strongest light in the spectrum emitted by the LED, i.e. the wavelength corresponding to the maximum point of the entire spectrum.

[0056] It can be understood that, in order to understand the light emission performance of the LED in real time, step S10 is performed, which can avoid the failure to discover the change of the peak wavelength in the spectrum in time, thereby achieving the effect of accurately grasping the actual light emission condition of the LED.

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

[0058] In step S20, the target peak wavelength of the light emitting diode in the working state is obtained, and the actual peak wavelength and the target peak wavelength are compared;

[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 the requirements of a specific application, i.e. the wavelength corresponding to the maximum point of the entire spectrum of the LED; the wavelength drift refers to the deviation phenomenon between the actual peak wavelength and the target peak wavelength.

[0060] It can be understood that, since the spectrum of the LED in actual monitoring often cannot meet the expected state due to changes over time or temperature effects, step S20 is performed, which can avoid the failure to correctly identify the wavelength drift phenomenon occurring in the spectrum, thereby causing the problem of unstable optical performance of the LED, and provides an effective and reliable basis for subsequent processing of the wavelength drift problem.

[0061] In a feasible implementation, after step S20, steps S201-S203 can be further included:

[0062] In step S201, the deviation amount between the actual peak wavelength and the target peak wavelength is determined.

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

[0064] It can be understood that, in order to quantify the deviation degree of the spectrum of the LED, step S201 is performed, which can avoid the failure to accurately judge whether the spectrum is within an acceptable range, thereby achieving the effect of accurately evaluating the stability of the peak wavelength of the spectrum of the LED.

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

[0066] It can be understood that, in order to determine whether the peak wavelength deviation in the current LED spectrum is within the acceptable error range, step S202 is performed, unnecessary adjustment of the slight deviation can be avoided, unnecessary power consumption and system burden are reduced, and the optimized operation and energy saving of the system are realized.

[0067] In step S203, if the deviation is greater than the preset amount, it is determined that the actual peak wavelength has wavelength drift compared with the target peak wavelength.

[0068] It can be understood that, in order to determine whether the peak wavelength deviation in the current LED spectrum is within the acceptable error range, step S202 is performed, unnecessary adjustment of the slight deviation can be avoided, unnecessary power consumption and system burden are reduced, and the optimized operation and energy saving of the system are realized.

[0069] In the embodiment, by using the means of real-time monitoring and comparing the deviation between the actual peak wavelength and the target peak wavelength, the problems of spectral instability and performance decline caused by LED wavelength drift are avoided, real-time feedback and adjustment of the LED input power are realized, the stability of the peak wavelength of the LED light source and the spectral characteristics are ensured, and the effects of optimizing the performance of the LED light source and improving the reliability of the system are achieved.

[0070] In step S30, in the case where the actual peak wavelength has 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, so as to adjust the actual peak wavelength to the target peak wavelength.

[0071] It should be noted that the wavelength drift of the LED device varies from several nm to tens of nm according to the wavelength range, but the wavelength drift characteristics of the LEDs with similar wavelengths are similar, so the peak wavelength adjustment system is configured with each sub-LED whose corresponding peak wavelengths under the same input power have a difference less than a preset spectral half-width value. The preset spectral half-width value (Full Width at Half Maximum, FWHM) refers to the wavelength range when the spectral intensity drops to half of the peak value. This value is a parameter for measuring the spectral width or spectral purity, and is used to describe the wavelength interval corresponding to half of the peak intensity in the spectrum. In LED technology, a smaller spectral half-width value usually means that the spectrum is more concentrated and the color is more pure, while a larger spectral half-width value means that the spectrum is wider and the color may not be so pure. Therefore, this parameter is used to ensure that the peak wavelengths of each sub-LED under the same input power are small enough to maintain the continuity of the spectrum and the stability of the color. The LEDs configured with a peak wavelength difference less than the preset spectral half-width value under the same input power, i.e. using LEDs with similar wavelengths (such as the preferred peak wavelength difference of each sub-LED in the embodiment is between 5-10 nm), can avoid the problem of spectral discontinuity and color inconsistency caused by too large peak wavelength difference of the LEDs, and realize the spectral smoothness and color uniformity of the LED combined light source.

[0072] It can be understood that since the wavelength drift in the spectrum of the LED will affect the optical performance required by the LED when it needs to meet the requirements of a specific application, step S30 is performed to correct the actual peak wavelength by adjusting the input power when the wavelength drift is found, which can effectively avoid the problem of too large wavelength drift, realize accurate control and stable output of the peak wavelength of the LED light source, and thus improve the stability and reliability of the spectral combination.

[0073] Exemplarily, in the LED configured with two sub-LEDs, and in the case that the actual peak wavelength is detected to have wavelength drift from the target peak wavelength, the input power acting on the two sub-LEDs is adjusted according to the target peak wavelength, for example: in the case that 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 with larger peak wavelength variation with input power is appropriately reduced, and the input power of the other sub-LED is increased, i.e. the power distribution ratio between the two sub-LEDs is tilted to the sub-LED with smaller peak wavelength variation with input power; if the actual peak wavelength is shorter than the target peak wavelength, the input power of the sub-LED with larger peak wavelength variation with input power is appropriately increased, and the input power of the other sub-LED is reduced, i.e. the power distribution ratio between the two sub-LEDs is tilted to the sub-LED with larger peak wavelength variation 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, the step of adjusting the input power of each sub-LED according to the target peak wavelength in step S30 can include steps S31-S32.

[0075] In step S31, the current input power of the LED is obtained, and the reference input power of each sub-LED under the current input power is obtained by querying a preset relationship table according to the current input power and the target peak wavelength.

[0076] It should be noted that the current input power refers to the total input power input to the LED at the current time, i.e. the sum of the input power input to each sub-LED; the reference input power refers to the input power value that each sub-LED should adopt 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 that the spectral deviation caused by incorrect input power setting cannot be normally solved, thereby providing a reliable data basis for realizing accurate control of the light emitting characteristics of the LED.

[0078] Exemplarily, the current input power of the LED is obtained, and the reference input power of each sub-LED under the current input power is obtained by querying a preset relationship table according to the current input power and the target peak wavelength, as shown in Table 1 below:

[0079]

[0080]

[0081] Table 1

[0082] The center wavelength in the table is the peak wavelength, the combined center wavelength is the peak wavelength of the LED combined by LED A and LED B, the above table is a preset relationship table corresponding to the target peak wavelength of 500 nm under the current input power, and the center wavelengths of LED A and LED B and the center wavelength of the LED combined by LED A and LED B are shown in the table under the condition that the current input power is constant. 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, the preset relationship table records the record peak wavelengths of the spectrum of each sub-light emitting diode under different record input power combinations under different current input powers, and 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 in the preset relationship table under the current input power can include steps S311-S312:

[0084] In step S311, the corresponding record peak wavelength in the preset relationship table is determined according to the current input power and the target peak wavelength.

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

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

[0087] In step S312, the record input power of each sub-light emitting diode associated with the record peak wavelength in the preset relationship table is taken as the reference input power.

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

[0089] It can be understood that in order to determine the input power of each sub-LED closest to the target peak wavelength, step S312 is performed, which can avoid the problem of deviation of the light emitting performance of the LED due to 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, in the case that two sub-LEDs are configured in the LED, a preset relationship table is inquired according to the target peak wavelength, a record peak wavelength in the preset relationship table that is closest to the target peak wavelength under the current input power is obtained, and the record input power of the two sub-LEDs associated with the record peak wavelength is taken as the reference input power of the two sub-LEDs.

[0091] In the embodiment, by inquiring the preset relationship table and matching the target peak wavelength to determine the corresponding record peak wavelength, and taking the associated record input power as the reference input power, the problem that the actual peak wavelength of the spectrum does not match the target peak wavelength due to improper LED power setting is avoided, the input power of each sub-LED is accurately adjusted according to the target peak wavelength, the peak wavelength stability and the spectrum quality of the LED light source are ensured, and thus the effects of optimizing the performance of the LED light source and improving the system reliability are achieved.

[0092] In step S32, the input power of each sub-LED is adjusted to the reference input power.

[0093] It can be understood that, since there is currently a lack of an effective regulation means for the problem of peak wavelength drift, by performing step S32, the actual input power of each sub-LED is adjusted according to the reference input power in the preset relationship table, the problem of unstable LED performance due to improper adjusted input power is avoided, the LED emits light according to the expected effect is ensured, and thus the stable output of the LED light source is achieved.

[0094] In the embodiment, by inquiring the preset relationship table to obtain the reference input power of each sub-LED, and adjusting the actual input power of each sub-LED to the reference value, the problems of spectrum peak wavelength drift and instability due to improper LED power setting are avoided, the peak wavelength of the LED light source is accurately controlled, the stability and reliability of the mixed light spectrum are ensured, and thus the effects of optimizing the performance of the LED light source and improving the spectrum stability are achieved.

[0095] The embodiment provides a peak wavelength adjustment method of a light-emitting diode, by performing spectrum monitoring, peak wavelength real-time comparison on an LED composed of a plurality of sub-LEDs, and dynamically adjusting the input power of each sub-LED when the peak wavelength drifts, the problem of unstable spectrum due to LED peak wavelength drift is avoided, the technical effect of keeping the peak wavelength of the LED light source relatively stable under different input powers is achieved, and thus the accuracy of spectrum combination and the overall performance of the LED light-emitting system are improved.

[0096] In an implementation, the peak wavelength adjusting system further comprises a light mixing component, the light emitted by the sub light emitting diodes is mixed by the light mixing component to generate a spectrum of the light emitting diode, wherein the light mixing component comprises at least a multi-layer light uniform scattering plate, and after step S32, steps S331-S332 can be included.

[0097] Step S331, adjusting the emission angle of each sub light emitting diode after adjusting the input power;

[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 of the surface of the sub LED.

[0099] It can be understood that since there is often a problem of poor light mixing effect in the process of using multiple sub LEDs for light mixing, step S331 is performed to adjust the emission angle of each LED, which can avoid the problem of poor light mixing effect caused by the angle, thereby achieving more efficient and uniform light emitting effect.

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

[0101] Step S332, mixing the emitted light generated by each sub light emitting diode after adjusting the emission angle through the multi-layer light uniform scattering plate to obtain a new spectrum of the light emitting diode in the working state.

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

[0103] It can be understood that in order to utilize the light scattering properties of the multi-layer light uniform 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 presented spectrum and consistency of illumination by introducing the multi-layer light uniform scattering plate.

[0104] Exemplarily, the multi-layer uniform light scattering plate is placed in front of each sub light emitting diode with the emission angle adjusted, and the incident surface of the scattering plate is parallel to the emission beam of the light emitting diode; 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 light emitting diode can be uniformly mixed after passing through the scattering plate, thereby forming a uniform light intensity distribution and consistent color mixing effect on the exit surface, thereby realizing efficient light mixing.

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

[0106] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as the above embodiment one can refer to the above introduction, and will not be described in detail. On this basis, please refer to Figure 2 , the peak wavelength adjustment method of the light emitting diode further includes steps S01-S03:

[0107] Step S01, for any one sub light emitting diode, monitoring the test peak wavelength of the sub light emitting diode under different test input powers;

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

[0109] It can be understood that in order to collect LED performance data under different powers, step S01 is performed, which can avoid the problem that the specific drift of the peak wavelength of the LED with the input power cannot be accurately understood due to lack of data, thereby realizing detailed analysis and understanding of the performance of the LED.

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

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

[0112] It can be understood that in order to establish a relationship model between power and wavelength, step S02 is performed, which can avoid the problem that the light-emitting characteristics of the LED cannot be predicted and controlled 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-light-emitting diode, a preset relationship table is obtained based on the combination of each preset relationship sub-table.

[0114] It can be understood that since the LED is composed of multiple sub-LEDs, in order to adjust the peak wavelength in the final LED spectrum to a target value, step S03 is performed, which creates a comprehensive relationship table, i.e., a preset relationship table, by integrating the data of all sub-light-emitting diodes, which can avoid the problem that when the input power of any one sub-LED is adjusted, the reasonable adaptation with the remaining sub-LEDs is not considered, thereby providing accurate and reliable adjustment data basis for the optimization and stability of the entire LED system spectrum combination, and further improving the overall performance and reliability of the system.

[0115] In this embodiment, by testing and recording the peak wavelength of the LED under different powers, the relationship sub-table is established and combined, which avoids the problem of insufficient LED-related data and unpredictable actual performance, realizes accurate control and technical optimization of the LED performance, and ensures efficient and stable operation of the LED system.

[0116] For the sake of understanding the implementation process of the peak wavelength adjustment method of the light-emitting diode obtained after combining the above-mentioned embodiment one, an example is provided as follows: Figure 3 , Figure 3 A brief flowchart of a peak wavelength adjustment method 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 has not shifted, the monitoring of the actual peak wavelength of the LED is maintained; if the actual peak wavelength has shifted, the preset relationship table is queried based on the current input power of the LED and the target peak wavelength, so that the input power of the current LED is adjusted according to the recorded input power of each sub-LED corresponding to the target peak wavelength in the preset relationship table under the current input power, wherein the preset relationship table is obtained by testing each sub-LED under different test input powers, and the data in the preset relationship table is each test input power and the test peak wavelength of each sub-LED under each test input power recorded during the test process.

[0118] Further, please refer to Figure 4 , Figure 4A brief structural schematic diagram of a peak wavelength adjusting method of a light emitting diode is provided, wherein L1 and L2 represent two sub-LEDs arranged in the LED, M represents a light mixing component, C represents an input power distribution circuit for adjusting the input power of the two sub-LEDs, and is connected with C and M respectively, and B represents a circuit board connected with L1, L2 and C. A large spatial distance can be arranged between L1, L2 and M to achieve more uniform light mixing, and meanwhile, L1 and L2 can achieve better light mixing effect through a module or a packaging structure with reduced size.

[0119] It should be noted that the above examples are only used for understanding the present application and do not constitute a limitation on the peak wavelength adjusting method of the light emitting diode of the present application, and more forms of simple transformation based on the technical concept are within the protection scope of the present application.

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

[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 light mixing of each sub-LED;

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

[0123] an adjusting module 30 for adjusting the input power of each sub-LED according to the target peak wavelength to adjust the actual peak wavelength to the target peak wavelength when it is detected that the actual peak wavelength has wavelength drift compared with the target peak wavelength.

[0124] Optionally, the adjusting module 30 is further configured to:

[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-LED in the preset relationship table under the current input power;

[0126] adjust the input power of each sub-LED to the reference input power.

[0127] Optionally, the adjusting module 30 is further configured to:

[0128] ​determining a corresponding record peak wavelength in the preset relationship table according to the current input power and the target peak wavelength;

[0129] taking record input powers of each of the sub light emitting diodes associated with the record peak wavelength in the preset relationship table as each of the reference input powers.

[0130] Optionally, the peak wavelength adjustment system further comprises a light mixing component, and the each of the sub light emitting diodes generates a spectrum of the light emitting diode by light mixing through the light mixing component, wherein the light mixing component at least comprises a multi-layer light uniform scattering plate, and the adjustment module 30 is further configured to:

[0131] adjusting an emission angle of each of the sub light emitting diodes after the input power adjustment;

[0132] mixing light emitted by each of the sub light emitting diodes after the emission angle adjustment through the multi-layer light uniform scattering plate to obtain a new spectrum of the light emitting diode in the working state.

[0133] Optionally, the test module 40 in the peak wavelength adjustment device of the light emitting diode is configured to:

[0134] monitoring a test peak wavelength of each of the sub light emitting diodes under different test input powers;

[0135] recording each of the test input powers and the test peak wavelength of each of the sub light emitting diodes under each of the test input powers to obtain each of the record peak wavelengths under each of the record input powers, and constructing a preset relationship sub-table of each of the sub light emitting diodes based on each of the record peak wavelengths under each of the record input powers;

[0136] combining each of the preset relationship sub-tables to obtain the preset relationship table after traversing each of the sub light emitting diodes.

[0137] Optionally, the monitoring module 10 is further configured to:

[0138] determining a deviation between the actual peak wavelength and the target peak wavelength;

[0139] 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;

[0140] if the deviation is greater than the preset value, determining that the actual peak wavelength has wavelength drift compared with the target peak wavelength.

[0141] Optionally, a difference between corresponding peak wavelengths of each of the sub light emitting diodes configured in the peak wavelength adjustment system under the same input power is less than a preset spectrum full width at half maximum value.

[0142] The peak wavelength adjusting device of the light emitting diode provided in the present application adopts the peak wavelength adjusting method of the light emitting diode in the above 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 peak wavelength adjusting device of the light emitting diode provided in the present application has the same beneficial effects as the peak wavelength adjusting method of the light emitting diode provided in the above embodiment, and other technical features in the peak wavelength adjusting device of the light emitting diode are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0143] The present application provides an electronic device, which comprises at least one processor and a memory connected with the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the peak wavelength adjusting method of the light emitting diode in the above embodiment one.

[0144] Reference will be made to the following description of the embodiments of the present application, taken in conjunction with the accompanying drawings, in which Figure 6 which shows a structural schematic diagram of an electronic device suitable for implementing the embodiments of the present application. The electronic device in the embodiments of the present application can include but is not limited to mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (Personal Digital Assistant), PADs (Portable Application Description), PMPs (Portable Media Player), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), and the like, and fixed terminals such as digital TVs, desktop computers, and the like. Figure 6 The electronic device shown is only an example, and should not bring any limitation to the functions and use range of the embodiments of the present application.

[0145] As Figure 6As shown, the electronic device can include a processing device 1001 (e.g., a central processor, a graphics processor, etc.) that can perform various appropriate actions and processes according to programs stored in a read only memory (ROM) 1002 or loaded from a storage device 1003 into a random access memory (RAM) 1004. Various programs and data required for operation of the electronic device are also stored in the RAM 1004. The processing device 1001, the ROM 1002, and the RAM 1004 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: input devices 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; the 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 wirelessly or wired with other devices to exchange data. Although the electronic device with various systems is shown in the figure, it should be understood that all the shown systems are not required to be implemented or possessed. More or less systems can be alternatively implemented or possessed.

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

[0147] The electronic device provided by the present application adopts the peak wavelength adjustment method of the light emitting diode in the above-mentioned embodiments, 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 electronic device provided by the present application has the same beneficial effects as the peak wavelength adjustment method of the light emitting diode provided by the above-mentioned embodiments, and other technical features in the electronic device are the same as the features disclosed in the previous embodiment method, which will not be repeated here.

[0148] It should be understood that various aspects of the disclosure can be implemented in 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 appropriate manner in any one or more embodiments or examples.

[0149] The above description is merely illustrative of the application and is not intended to limit the scope of the application. Any variations and modifications that can be made by any person skilled in the art within the spirit and scope of the application are intended to be encompassed by the application. Therefore, the scope of the application should be determined by the appended claims.

[0150] The application provides a computer readable storage medium having stored thereon computer readable program instructions (i.e., a computer program) for performing the peak wavelength adjustment method of the light emitting diode in the above-described embodiments.

[0151] The computer readable storage medium provided by the application may, for example, be a U disk, but is not limited to an electric, magnetic, optical, electromagnetic, infrared, or semiconductor system or device, or any combination thereof. More specific examples of the computer readable storage medium can include, but are not limited to, an electric connection having one or more conductive wires, a portable computer disk, a hard disk, a random access memory (RAM), a read only memory (ROM), an erasable programmable read only memory (EPROM or flash memory), an optical fiber, a portable compact disk read only memory (CD-ROM), an optical storage device, a magnetic storage device, or any appropriate combination thereof. In the present embodiment, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system or device. The program code contained on the computer readable storage medium can be transmitted by any appropriate medium, including but not limited to an electric wire, an optical cable, an RF (Radio Frequency), etc., or any appropriate combination thereof.

[0152] The above-described computer readable storage medium can be contained in an electronic device or can exist separately without being assembled into an electronic device.

[0153] The computer readable storage medium described above carries one or more programs, when the one or more programs are executed by the electronic device, cause the electronic device to: monitor a spectrum of the light emitting diode in a working state, and determine an actual peak wavelength of the light emitting diode based on the spectrum; acquire a target peak wavelength of the light emitting diode in the working state, and compare the actual peak wavelength with the target peak wavelength; and in a case where it is detected that the actual peak wavelength has a wavelength shift from the target peak wavelength, adjust 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 carrying out operations of the present application can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer can 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 the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0155] The computer program instructions can also be loaded onto a computer or other programmable information processing apparatus to cause a series of operations to be performed on the computer or other programmable information processing apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable information processing apparatus implement the functions / acts specified in the flowchart and / or block diagram block or blocks.

[0156] The modules described in the embodiments of the present application can be implemented in the form of software or in the form of hardware. In some cases, the name of the module does not constitute a limitation on the module itself.

[0157] The readable storage medium provided by the present application is a computer readable storage medium, which stores computer readable program instructions (i.e., a computer program) for executing the peak wavelength adjustment method of the light-emitting diode, 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 computer readable storage medium provided by the present application has the same beneficial effects as the peak wavelength adjustment method of the light-emitting diode provided by the above-mentioned embodiments, and will not be described here.

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

[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 computer program product provided by the present application has the same beneficial effects as the peak wavelength adjustment method of the light-emitting diode provided by the above-mentioned embodiments, and will not be described here.

[0160] The above only describes some embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is 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, An application is made in a peak wavelength adjustment system, wherein the peak wavelength adjustment system includes a light-emitting diode (LED) composed of multiple sub-LEDs and a light mixing component. Each sub-LED generates its spectrum through light mixing by the light mixing component. The light mixing component includes at least multiple layers of light-diffusing plates. The difference between the peak wavelengths corresponding to each sub-LED at the same input power is less than a preset spectral half-width at half-maximum (FWHM). The peak wavelength adjustment method for the LED includes: Monitor the spectrum of the light-emitting diode in its operating state, and determine the actual peak wavelength of the light-emitting diode based on the spectrum, wherein the spectrum is generated by light mixing of each sub-light-emitting diode; Obtain the target peak wavelength of the light-emitting diode in its operating state, and compare the actual peak wavelength with the target peak wavelength; When a wavelength shift is detected between the actual peak wavelength and the target peak wavelength, the current input power of the light-emitting diode is obtained, and a preset relationship table is consulted based on 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, wherein the sum of the reference input powers of each sub-light-emitting diode is the current input power; The input power of each sub-LED is adjusted to the reference input power in order to adjust the actual peak wavelength to the target peak wavelength; The emission angle of each sub-LED is adjusted after the input power is adjusted. During the adjustment of the emission angle, the emission angle of each sub-LED is iteratively fine-tuned according to the light intensity distribution and color uniformity of the light mixing region until the light intensity distribution and color uniformity reach the preset optimal state. The emitted light from each sub-LED after the emission angle is adjusted is mixed by the multi-layer light-diffusing plate to obtain a new spectrum of the LED in the working state.

2. The peak wavelength adjustment method for a light-emitting diode as described in claim 1, characterized in that, The step of querying a preset relationship table based on the current input power and the target peak wavelength to obtain the reference input power of each sub-LED under the current input power includes: Based on the current input power and the target peak wavelength, determine the corresponding recorded peak wavelength in the preset relationship table; The recording input power of each sub-LED associated with the recorded peak wavelength in the preset relationship table is used as the reference input power.

3. The peak wavelength adjustment method for a light-emitting diode as described in claim 1, characterized in that, The peak wavelength adjustment method for the light-emitting diode further includes: For any sub-LED, monitor the test peak wavelength of the sub-LED under different test input powers; Record the test peak wavelength of the sub-LED under each test input power to obtain each recorded peak wavelength under each recorded input power, and construct a preset relationship sub-table of the sub-LED based on each recorded peak wavelength under 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.

4. The peak wavelength adjustment method for a light-emitting diode as described in claim 1, characterized in that, The step of comparing the actual peak wavelength with the target peak wavelength further includes: Determine the deviation between the actual peak wavelength and the target peak wavelength; If the deviation is less than or equal to a preset amount, then return to the step of monitoring the spectrum of the light-emitting diode in the working state; If the deviation is greater than a preset amount, it is determined that the actual peak wavelength has shifted from the target peak wavelength.

5. A peak wavelength adjustment device for a light-emitting diode, characterized in that, An application is made in a peak wavelength adjustment system, wherein the peak wavelength adjustment system includes a light-emitting diode (LED) composed of multiple sub-LEDs and a light mixing component. Each sub-LED generates its spectrum through light mixing by the light mixing component. The light mixing component includes at least multiple layers of light-diffusing plates. The difference between the peak wavelengths corresponding to each sub-LED at the same input power is less than a preset spectral half-width at half-maximum (FWHM). The peak wavelength adjustment device for the LED includes: A monitoring module is used to monitor the spectrum of a light-emitting diode (LED) in its operating state and determine the actual peak wavelength of the LED based on the spectrum, wherein the spectrum is generated by mixing light from each sub-LED; The comparison module is used to 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; An adjustment module is used to, when a wavelength shift is detected between the actual peak wavelength and the target peak wavelength, obtain the current input power of the light-emitting diode (LED), and query a preset relationship table based on the current input power and the target peak wavelength to obtain the reference input power of each sub-LED at the current input power, wherein the sum of the reference input powers of each sub-LED is the current input power; adjust the input power of each sub-LED to the reference input power to adjust the actual peak wavelength to the target peak wavelength; adjust the emission angle of each sub-LED after the input power adjustment, wherein, during the emission angle adjustment process, the emission angle of each sub-LED after the input power adjustment is iteratively fine-tuned according to the light intensity distribution and color uniformity of the mixing region until the light intensity distribution and color uniformity reach a preset optimal state; and mix the emitted light generated by each sub-LED after the emission angle adjustment through the multilayer light-diffusing plate to obtain a new spectrum of the LED in the working state.

6. An electronic device, characterized in that, The device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the peak wavelength adjustment method for a light-emitting diode as described in any one of claims 1 to 4.

7. 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, it implements the steps of the peak wavelength adjustment method for a light-emitting diode as described in any one of claims 1 to 4.

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