Laser adjustment method, device, electronic equipment and storage medium

Abstract

The present disclosure provides a laser adjustment method, device, electronic device and storage medium, wherein the method includes: obtaining a laser current value preset for exciting mixed color fluorescence according to a preset projection brightness requirement; determining a ratio range between a plurality of primary color lasers and corresponding monochromatic fluorescence in the mixed color fluorescence based on a preset color gamut requirement and a preset speckle contrast requirement; determining a primary color current value to be set for each primary color laser based on the ratio range and laser current value determined for each primary color laser. The ratio range in the present disclosure is determined based on the preset color gamut requirement and the preset speckle contrast requirement, so that the corresponding adjusted primary color laser can significantly eliminate the adverse effects caused by speckle, and improve the picture projection effect. In addition, the primary color current value set in the above manner can also meet the maximum efficiency ratio requirement, so that the relevant light source equipment is in a power saving and energy saving state.

Description

Technical Field

[0001] The present disclosure relates to the field of laser display technology, and in particular to a laser adjustment method, device, electronic device and storage medium. Background Art

[0002] Compared with traditional light sources, laser light sources have various advantages such as high brightness, long life, energy saving and environmental protection. Their applications in the display field have become more and more extensive. For example, they can be used in various fields such as cinema screenings, desktop interactive projection, and car head-up displays.

[0003] Taking cinema projection as an example, in the actual application of laser light sources, especially in the application process of multiple laser light sources, due to the characteristics of laser such as narrow spectrum and strong coherence, interference is prone to occur and speckle is generated, which in turn affects the projection picture effect. Summary of the invention

[0004] The embodiments of the present disclosure at least provide a laser adjustment method, device, electronic device and storage medium, which set the primary color current value by preset color gamut requirements and preset speckle contrast requirements, so that speckle can be eliminated to a great extent, and can also meet the maximum performance ratio requirements, thereby saving more power.

[0005] In a first aspect, an embodiment of the present disclosure provides a laser adjustment method, the method comprising:

[0006] Obtaining a laser current value preset for exciting mixed-color fluorescence according to a preset projection brightness requirement;

[0007] Determine the ratio range between the plurality of primary color lasers and the corresponding monochromatic fluorescence in the mixed color fluorescence based on the preset color gamut requirement and the preset speckle contrast requirement;

[0008] Based on the respectively determined ratio ranges of the primary color lasers and the laser current values, the primary color current values ​​to be set for the primary color lasers are determined.

[0009] In a possible implementation manner, determining the primary color current value to be set for each primary color laser based on the respectively determined ratio range of each primary color laser and the laser current value includes:

[0010] For each primary color laser, selecting a corresponding primary color ratio from a ratio range determined by the primary color laser;

[0011] Based on the primary color ratio selected for each primary color laser and the laser current value, the primary color current value that needs to be set for each primary color laser is determined.

[0012] In a possible implementation manner, selecting a corresponding primary color ratio from a ratio range determined by the primary color laser includes:

[0013] For each primary color laser, selecting a preset number of candidate ratios from the ratio range determined by the primary color laser;

[0014] By means of a preset constraint relationship between the total efficiency ratio and the brightness of each primary color laser, an alternative ratio is selected for each primary color laser so as to maximize the total efficiency ratio; wherein the total efficiency ratio is determined by the efficiency ratios corresponding to each primary color laser and the mixed color phosphor respectively;

[0015] The selected candidate ratio is determined as the primary color ratio corresponding to the primary color laser.

[0016] In a possible implementation manner, before selecting the candidate ratio that maximizes the total efficiency ratio for each primary color laser, the method further includes:

[0017] Determine a standard primary color laser from each primary color laser, and determine a preset number of primary color ratios corresponding to the standard primary color laser;

[0018] The method of selecting the alternative ratio for each primary color laser so as to maximize the total efficiency ratio includes:

[0019] Selecting an alternative ratio that maximizes the total efficiency ratio for the standard primary color lasers based on a preset constraint relationship between the total efficiency ratio and the brightness of each primary color laser;

[0020] The selected candidate ratio is determined as the primary color ratio corresponding to the standard primary color laser, and the primary color ratios corresponding to the respective primary color lasers are determined based on the primary color ratio corresponding to the standard primary color laser.

[0021] In a possible implementation manner, selecting the candidate ratio for the standard primary color laser so as to maximize the total efficiency ratio includes:

[0022] The preset constraint relationship is converted based on a first corresponding relationship between the brightness of the primary color laser and the alternative ratio, and a second corresponding relationship between the alternative ratios of other primary color lasers except the standard primary color laser and the alternative ratio of the standard primary color laser, to obtain a conversion constraint relationship; the conversion constraint relationship is related to the alternative ratio corresponding to the standard primary color laser;

[0023] Each candidate ratio selected for the standard primary color laser is used as an input parameter of the conversion constraint relationship, and a total efficiency ratio is obtained as an output;

[0024] Select the alternative ratio with the largest total efficiency ratio from various alternative ratios.

[0025] In a possible implementation, determining the ratio ranges between the plurality of primary color lasers and the corresponding monochromatic fluorescence in the mixed color fluorescence based on the preset color gamut requirement and the preset speckle contrast requirement includes:

[0026] Based on the preset color gamut requirement, determining the minimum value in the ratio range between the plurality of primary color lasers and the corresponding single color fluorescence in the mixed color fluorescence; and

[0027] Based on a preset speckle contrast requirement, a maximum value in a ratio range between a plurality of primary color lasers and a corresponding single color fluorescence in the mixed color fluorescence is determined.

[0028] In a possible implementation manner, the minimum value in the ratio range is determined according to the following steps:

[0029] Acquire the color coordinates of each primary color laser, and the brightness value and color coordinates of the mixed color fluorescence under the excitation of the laser current value;

[0030] Based on the color coordinates of each primary color laser and the brightness value and color coordinates of the mixed color phosphor, the brightness value of each primary color laser is determined by a preset constraint relationship between the color coordinates of the mixed light and the brightness information of each primary color laser; wherein the mixed light is obtained by mixing the primary color laser and the mixed color phosphor;

[0031] Based on the ratio relationship between the brightness value of each primary color laser and the brightness value of the mixed color fluorescent light, the minimum value in the ratio range is determined.

[0032] In a possible implementation manner, when the preset constraint relationship includes a third correspondence relationship between the color coordinates of the mixed light and the tristimulus information, and a fourth correspondence relationship between the tristimulus information and the brightness information of each primary color laser, determining the brightness value of each primary color laser by the preset constraint relationship between the color coordinates of the mixed light and the brightness information of each primary color laser includes:

[0033] Using the color coordinates of each primary color laser and the brightness value and color coordinates of the mixed color fluorescent light as input parameters of the fourth corresponding relationship, determining the tristimulus values ​​including the brightness information of each primary color laser;

[0034] Using the tristimulus values ​​as input parameters of the third corresponding relationship, determining the color coordinate value of the mixed light including the brightness information of each primary color laser;

[0035] When the color coordinate value conforms to the preset color coordinate range, the brightness value of each primary color laser is determined.

[0036] In a possible implementation manner, the maximum value in the ratio range is determined according to the following steps:

[0037] Based on the preset speckle contrast requirement, determining a preset constraint relationship between the preset speckle contrast and the ratio corresponding to each primary color laser;

[0038] Determine the proportion of each primary color laser based on the preset constraint relationship;

[0039] The determined ratio is taken as the maximum value in the ratio range.

[0040] In a possible implementation, the method further includes:

[0041] When the determined minimum value is greater than the maximum value, a prompt message is generated to remind the user to change the screen.

[0042] In a second aspect, the present disclosure also provides a laser adjustment device, the device comprising:

[0043] An acquisition module, used to acquire a laser current value for exciting mixed-color fluorescence that is preset according to a preset projection brightness requirement;

[0044] A determination module, configured to determine a ratio range between a plurality of primary color lasers and a corresponding monochromatic fluorescence in the mixed color fluorescence based on a preset color gamut requirement and a preset speckle contrast requirement;

[0045] The adjustment module is used to determine the primary color current value that needs to be set for each primary color laser based on the ratio range determined for each primary color laser and the laser current value.

[0046] In a third aspect, an embodiment of the present disclosure further provides an electronic device, comprising: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate via the bus, and when the machine-readable instructions are executed by the processor, the laser adjustment method as described in the first aspect and any of its various embodiments is performed.

[0047] In a fourth aspect, an embodiment of the present disclosure further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the laser adjustment method as described in the first aspect and any of its various embodiments is executed.

[0048] By adopting the above laser adjustment method, device, electronic device and storage medium, when the laser current value for exciting fluorescence preset for the preset projection brightness requirement is obtained, the ratio range between the multiple primary color lasers and the corresponding monochromatic fluorescence in the mixed color fluorescence can be determined based on the preset color gamut requirement and the preset speckle contrast requirement, and then the primary color current value to be set for each primary color laser is determined based on the ratio range and the laser current value. The present disclosure adjusts the primary color current value by the ratio range between the primary color laser and the corresponding monochromatic fluorescence in the mixed color fluorescence. Since the ratio range is determined based on the preset color gamut requirement and the preset speckle contrast requirement, the corresponding adjusted primary color laser can significantly eliminate the adverse effects caused by speckle, thereby improving the picture projection effect. In addition, the primary color current value set in the above manner can also meet the maximum efficiency ratio requirement, so that the relevant light source equipment is in a power saving and energy-saving state.

[0049] Other advantages of the present disclosure will be explained in more detail with reference to the following description and accompanying drawings.

[0050] It should be understood that the above description is only an overview of the technical solution of the present disclosure, so that the technical means of the present disclosure can be more clearly understood and implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present disclosure more obvious and easy to understand, the specific implementation methods of the present disclosure are specifically described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following is a brief introduction to the drawings required for use in the embodiments. The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and are used together with the specification to illustrate the technical solutions of the present disclosure. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can also be obtained based on these drawings without creative work.

[0052] Also, throughout the drawings, the same reference numerals are used to denote the same components. In the drawings:

[0053] Figure 1 A flow chart of a laser adjustment method provided by an embodiment of the present disclosure is shown;

[0054] Figure 2 A schematic diagram of the color coordinate region of mixed light in the laser adjustment method provided by an embodiment of the present disclosure is shown;

[0055] Figure 3 A schematic diagram of the light combining principle in the laser adjustment method provided in an embodiment of the present disclosure is shown;

[0056] Figure 4 A schematic diagram of a laser adjustment device provided by an embodiment of the present disclosure is shown;

[0057] Figure 5 A schematic diagram of an electronic device provided by an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0058] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0059] In the description of the embodiments of the present disclosure, it should be understood that terms such as "including" or "having" are intended to indicate the presence of features, numbers, steps, behaviors, components, parts, or a combination thereof disclosed in this specification, and are not intended to exclude the possibility of the presence of one or more other features, numbers, steps, behaviors, components, parts, or a combination thereof.

[0060] Unless otherwise specified, “ / ” means or. For example, A / B can mean A or B. The “and / or” in this article is merely a way to describe the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0061] The terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0062] According to research, in recent years, laser light sources have gradually replaced traditional high-pressure gas discharge bulbs to become a new generation of light sources. Fluorescent lasers have become the mainstream laser light source for theaters due to their good speckle elimination effect and high cost-effectiveness. Fluorescent laser projectors generally use blue light semiconductor lasers (Laser Diode, LD) to excite yellow / green fluorescent wheels to produce fluorescence, and then superimpose blue lasers (monochromatic lasers) or blue-red lasers (two-color lasers) or blue, red, and green lasers (three-color lasers) to synthesize white light for projection display. The efficiency ratios of the three solutions of monochrome lasers, two-color lasers, and three-color lasers combined with fluorescence gradually increase in order. Among them, the three-color laser mixed with fluorescence has the highest efficiency ratio and the lowest cost when the same brightness is required. Therefore, the three-color laser mixed with fluorescence has gradually become the mainstream solution for fluorescent lasers.

[0063] In the actual application of laser light sources, especially in the application process of multiple laser light sources, due to the characteristics of laser such as narrow spectrum and strong coherence, interference is prone to occur and speckle is generated, which in turn affects the projection picture effect.

[0064] In order to at least partially solve one or more of the above problems and other potential problems, the present disclosure provides a laser adjustment method, device, electronic device and storage medium, which sets the primary color current value by mixing fluorescence and combining preset color gamut requirements and preset speckle contrast requirements, so that speckle is eliminated to a great extent, thereby improving the picture projection effect.

[0065] To facilitate understanding of the present embodiment, a laser adjustment method disclosed in the embodiment of the present disclosure is first introduced in detail. The execution subject of the laser adjustment method provided in the embodiment of the present disclosure is generally an electronic device with certain computing capabilities, and the electronic device includes, for example: a terminal device or a server or other processing device, and the terminal device can be a user equipment (User Equipment, UE), a mobile device, a user terminal, a cellular phone, a cordless phone, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device, a wearable device, etc. In some possible implementations, the laser adjustment method can be implemented by a processor calling a computer-readable instruction stored in a memory.

[0066] See also Figure 1 FIG. 1 is a flow chart of a laser adjustment method provided in an embodiment of the present disclosure, wherein the method comprises steps S101 to S103, wherein:

[0067] S101: Obtaining a laser current value for exciting mixed-color fluorescence according to a preset projection brightness requirement;

[0068] S102: Determine the ratio ranges between the plurality of primary color lasers and the corresponding monochromatic fluorescence in the mixed color fluorescence based on the preset color gamut requirement and the preset speckle contrast requirement;

[0069] S103: determining the primary color current value to be set for each primary color laser based on the ratio range and laser current value determined for each primary color laser.

[0070] In order to facilitate understanding of the laser adjustment method provided by the embodiment of the present disclosure, the application scenario of the method is briefly described below. The laser adjustment method provided by the present disclosure can be mainly applied to related fields that require laser adjustment, such as cinema projection, desktop interactive projection, car head-up display and other fields. Considering the wide application in the field of cinema projection, cinema projection is used as an example for the following description.

[0071] In the related art, due to the narrow spectrum and strong coherence of the laser light source during the projection process, interference is likely to occur and speckle is generated, thereby affecting the projection picture effect. Based on this, the embodiment of the present disclosure provides a laser adjustment method for eliminating speckle, which sets the primary color current value by mixing fluorescence combined with preset color gamut requirements and preset speckle contrast requirements, so that speckle is eliminated to a great extent, thereby improving the picture projection effect.

[0072] Before adjusting the primary color current value, the laser current value for exciting fluorescence can be fixedly set here. The laser current value is used to excite the mixed-color fluorescence, and the ratio range between the multiple primary color lasers and the corresponding monochromatic fluorescence in the mixed-color fluorescence can be determined based on the preset color gamut requirement and the preset speckle contrast requirement, and then the primary color current value of each primary color laser is determined based on each ratio range and the above-mentioned laser current value.

[0073] In response to different projection brightness requirements, the laser current value set here to excite fluorescence is also different, and the larger the laser current value, the higher the fluorescence brightness will correspond to, and vice versa, the smaller the laser current value, the lower the fluorescence brightness will correspond to. The projection brightness requirement here can be 2-Dimensional (2D) 14FL (a brightness unit), 3D 5FL, or it can be set according to the needs of different users.

[0074] It should be noted that under the excitation of the laser current value, red and green fluorescence can be generated during projection, and the combination of red and green can produce yellow fluorescence. Therefore, in practical applications, the brightness values ​​of the two monochromatic fluorescences, red fluorescence and green fluorescence, can be tested accordingly.

[0075] When determining the laser current value, it is also necessary to determine the ratio range between each primary color laser and the corresponding monochromatic fluorescence in the mixed color fluorescence. The primary color laser here can refer to green laser, red laser, and blue laser. In practical applications, it can be a mixture of two primary color lasers and fluorescence (for example, a mixture of blue laser, red laser and fluorescence), or a mixture of three primary color lasers and fluorescence (for example, a mixture of green laser, red laser, blue laser and fluorescence). In some special scenarios, it can also be a mixture of one primary color laser and fluorescence, and there is no specific limitation here.

[0076] In the embodiment of the present disclosure, on the one hand, the minimum value in the ratio range between the multiple primary color lasers and the corresponding single color fluorescence in the mixed color fluorescence can be determined based on the preset color gamut requirement. The preset color gamut requirement here can refer to the DCI color gamut requirement. In order to meet the DCI color gamut requirement, the green laser / green fluorescence ratio C G and red laser / red fluorescence ratio C R Need to reach a certain value, count C G ∈[C GLow , +∞), C R ∈[C RLow , +∞).

[0077] On the other hand, based on the preset speckle contrast requirement, the maximum value in the ratio range between the multiple primary color lasers and the corresponding monochromatic fluorescence in the mixed color fluorescence can be determined. The preset speckle contrast requirement here can be a general speckle contrast requirement. The speckle contrast requirement puts forward a requirement on the upper limit of the ratio of red and green lasers to fluorescence. G ∈[0,+C GH ], C R ∈[0,+C RH ].

[0078] Based on the above two aspects, C can be determined to meet the DCI color gamut requirements and speckle contrast requirements. G ,C R , Range C G ∈[C GLow , C Gh ], C R ∈[C RLow , C Rh ].

[0079] In practical applications, the minimum value determined based on the DCI color gamut requirements should in principle be smaller than the maximum value determined based on the speckle contrast. GLow >C GH or C RLow >C RH , it means that it is impossible to meet the speckle contrast requirement while meeting the DCI color gamut requirement. At this time, a prompt message can be generated to remind the user to change the screen.

[0080] Considering the key role of determining the minimum value and the maximum value within the relevant ratio range in the laser adjustment method provided by the embodiment of the present disclosure, it can be specifically described in the following two aspects.

[0081] First aspect: In the embodiment of the present disclosure, the minimum value in the ratio range can be determined according to the following steps:

[0082] Step 1, obtaining the color coordinates of each primary color laser, and the brightness value and color coordinates of the mixed color fluorescence under the excitation of the laser current value for exciting the fluorescence;

[0083] Step 2: Based on the color coordinates of each primary color laser and the brightness value and color coordinates of the mixed color phosphor, the brightness value of each primary color laser is determined by a preset constraint relationship between the color coordinates of the mixed light and the brightness information of each primary color laser; wherein the mixed light is obtained by mixing the primary color laser and the mixed color phosphor;

[0084] Step 3: Based on the ratio relationship between the brightness value of each primary color laser and the brightness value of the mixed color fluorescent light, determine the minimum value in the ratio range.

[0085] The preset constraint relationship between the color coordinates of the mixed light and the brightness information of each primary color laser includes a third corresponding relationship between the color coordinates of the mixed light and the tristimulus information, and a fourth corresponding relationship between the tristimulus information and the brightness information of each primary color laser. In this way, the color coordinates of each primary color laser and the brightness value and color coordinates of the mixed color fluorescent light are used as input parameters of the fourth corresponding relationship to determine the tristimulus value containing the brightness information of each primary color laser, and then the tristimulus value can be used as the input parameter of the third corresponding relationship to determine the color coordinate value of the mixed light containing the brightness information of each primary color laser, and when the color coordinate value meets the preset color coordinate range, the brightness value of each primary color laser can be determined.

[0086] Among them, the above preset color coordinate range is as follows Figure 2 As shown in the R Zone and G Zone, the color coordinate value of the final mixed light should fall within the above-mentioned area range, that is, the color coordinate of the mixed green light after the green laser and the green fluorescent light are mixed should be in the G Zone, and the color coordinate of the mixed red light after the red laser and the red fluorescent light are mixed should be in the R Zone.

[0087] In order to further understand the above minimum value determination process, the following explanation can be given in conjunction with the formula.

[0088] First, the red fluorescence brightness and its color coordinates are measured on site and expressed as (Y RP ,x RP ,y RP ), the green fluorescence brightness and color coordinates are expressed as (YGP ,x Gp ,y GP ); Pure red, green, and blue laser color coordinates (x RL ,y RL ), (x GL ,y GL ), (x BL ,y BL ), are all known terms. Here, we can also calculate the green laser / green fluorescence ratio C G =Y GL / Y GP , red laser / red fluorescence ratio C R =Y RL / Y RP .

[0089] Next, the tristimulus values ​​(X) of the mixed light can be calculated according to the fourth corresponding relationship corresponding to the following formulas (1) to (3): com ,Y com ,Z com ), and the color coordinates (x) of the corresponding mixed light are calculated according to the third corresponding relationship corresponding to the following formulas (4) to (5): com ,y com ).

[0090] X com =x1 / y1*Y1+x2 / y2*Y2; (1)

[0091] Y com =Y1+Y2; (2)

[0092] Z com =(1 / y1-1-x1 / y1)Y1+(1 / y2-1-x2 / y2)*Y2 (3)

[0093] x com =X com / (X com +Y com +Z com ) (4)

[0094] y com =Y com / (X com +Y com +Z com ) (5)

[0095] When the corresponding relationship between the color coordinate value of the mixed light and the brightness information of each primary color laser is determined according to the above formula, it can be based on the following example: Figure 2 The color coordinate range shown is used to determine the brightness information of the corresponding primary color laser, and then the minimum value in the relevant ratio range can be determined.

[0096] Second aspect: In the embodiment of the present disclosure, the maximum value in the ratio range can be determined according to the following method:

[0097] In the disclosed embodiment, through a large number of experiments, it is found that the speckle contrast SR has the following preset constraint relationship SR=f(gain,D,C) with the screen gain, the screen equivalent scattering particle diameter, and the fluorescent laser ratio. When the screen gain gain and the screen equivalent scattering particle diameter D are fixed, SR is related to the laser-fluorescent ratio C. In this way, the maximum value in the fluorescent laser ratio range can be defined by the requirements for the speckle contrast SR in the relevant application field, that is, C GH , C RH .

[0098] Based on the above maximum and minimum values, the proportion range corresponding to each primary color laser can be determined.

[0099] When the ratio range and laser current value determined for each primary color laser are determined, the primary color current value to be set for each primary color laser can be determined. In the embodiment of the present disclosure, the ratio to be set for each primary color laser can be determined when the total efficiency ratio is maximized, and then the primary color current value to be set can be determined based on the ratio relationship between the determined ratio and the primary color laser brightness.

[0100] It can be seen that since the adjustment of the primary color current value is completed on the premise of satisfying both the DCI color gamut requirement and the speckle contrast requirement, the primary color laser excited by the adjusted primary color current value can eliminate speckle to a greater extent, and can have a greater performance ratio and wider practicality.

[0101] In the embodiment of the present disclosure, the corresponding primary color ratio can be selected from the ratio range determined by each primary color laser under the condition of satisfying the preset efficiency ratio, and then the primary color current value to be set for each primary color laser is determined based on the primary color ratio selected by each primary color laser and the laser current value for exciting fluorescence. The method for selecting the primary color ratio includes the following steps:

[0102] Step 1: for each primary color laser, select a preset number of candidate ratios from the ratio range determined by the primary color laser;

[0103] Step 2: Selecting a candidate ratio for each primary color laser that maximizes the total efficiency ratio based on a preset constraint relationship between the total efficiency ratio and the brightness of each primary color laser; wherein the total efficiency ratio is determined by the efficiency ratios corresponding to each primary color laser and the mixed color phosphor;

[0104] Step 3: Determine the selected candidate ratio as the primary color ratio corresponding to the primary color laser.

[0105] Here, the preset constraint relationship between the total efficiency ratio and the brightness of each primary color laser can be used to select an alternative ratio that maximizes the total efficiency ratio for each primary color laser, thereby determining the primary color ratio corresponding to each primary color laser.

[0106] In practical applications, a standard primary color laser can be determined from each primary color laser, and then the ratio calculation of other primary color lasers can be performed based on the standard primary color laser. This can be achieved through the following steps:

[0107] Step 1: based on a first correspondence between primary color laser brightness and an alternative ratio, and a second correspondence between the alternative ratios of other primary color lasers except the standard primary color laser and the alternative ratio of the standard primary color laser, the preset constraint relationship is converted to obtain a conversion constraint relationship; the conversion constraint relationship is related to the alternative ratio corresponding to the standard primary color laser;

[0108] Step 2: taking each candidate ratio selected for the standard primary color laser as an input parameter of the conversion constraint relationship, and outputting the total efficiency ratio;

[0109] Step 3: Select the alternative ratio with the largest total efficiency ratio from various alternative ratios.

[0110] Here, first, the preset constraint relationship between the total efficiency ratio and the brightness of each primary color laser can be converted, and the conversion constraint relationship is related to the alternative ratio corresponding to the standard primary color laser. In this way, each alternative ratio selected for the standard primary color laser is used as an input parameter of the conversion constraint relationship, and the total efficiency ratio is output. In the case of obtaining multiple total efficiency ratios, based on the comparison results of the total efficiency ratios, the alternative ratio corresponding to the maximum total efficiency ratio can be determined. The alternative ratio meets the maximum efficiency ratio requirement and can be used as the primary color ratio corresponding to the standard primary color laser. In addition, considering the relationship between the primary color ratio corresponding to the standard primary color laser and the primary color ratios corresponding to other primary color lasers, the primary color ratios corresponding to all primary color lasers can be determined.

[0111] In order to further understand the above primary color ratio and the determination process of the primary color current value corresponding to the primary color laser, the following is combined with the specific formula and Figure 3 Further explanation.

[0112] like Figure 3 As shown, the line connecting the blue light point B and the white balance point W (0.314, 0.351) should be on a straight line, which conforms to the following formula:

[0113] y=kx+m (6)

[0114] In addition, according to the light combining principle, the color coordinate point Y of GR after light combining is also on the extension line of BW. Considering that the primary color ratios of each primary color laser without color correction loss satisfy the following formula:

[0115] C without color correction loss G =f2(C R )

[0116] Blue laser brightness Y without color correction loss BL =f3(C R )

[0117] Here, red laser is used as the standard primary color laser, and the ratio range corresponding to the standard primary color laser is [C RLow , C Rh ] 1000 equidistant points are selected within the range, and then 1000 total efficiency ratios are determined by the preset constraint relationship between the total efficiency ratio and the brightness of each primary color laser as shown in the following formula.

[0118]

[0119] Here, we can determine the red laser ratio C when the efficiency ratio is the highest. RM , and then calculate the red, green, and blue laser brightness values ​​Y RL , Y GL , Y BL Furthermore, the primary color current values ​​of the red, green and blue lasers can be set according to the brightness values ​​of the primary color lasers.

[0120] In summary, the primary color current value set in the above manner can also meet the requirements of the maximum efficiency ratio, so that the relevant light source equipment is in a power-saving and energy-saving state. In this way, the corresponding adjusted primary color laser can significantly eliminate the adverse effects caused by speckle, improve the picture projection effect, and have wider practicality.

[0121] In the description of this specification, the description with reference to the terms "some possible embodiments", "some embodiments", "examples", "specific examples", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0122] About the method flow chart of the embodiment of the present disclosure, some operations are described as different steps performed in a certain order. Such flow chart is illustrative and not restrictive. Some steps described in this article can be grouped together and performed in a single operation, some steps can be divided into multiple sub-steps, and some steps can be performed in an order different from that shown in this article. The various steps shown in the flow chart can be implemented in any way by any circuit structure and / or tangible mechanism (for example, by software running on a computer device, hardware (for example, a logical function implemented by a processor or chip), etc., and / or any combination thereof).

[0123] Those skilled in the art will appreciate that, in the above method of specific implementation, the order in which the steps are written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of the steps should be determined by their functions and possible internal logic.

[0124] Based on the same inventive concept, a laser adjustment device corresponding to the laser adjustment method is also provided in the embodiment of the present disclosure. Since the principle of solving the problem by the device in the embodiment of the present disclosure is similar to the above-mentioned laser adjustment method in the embodiment of the present disclosure, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0125] Reference Figure 4 FIG. 4 is a schematic diagram of a laser adjustment device provided by an embodiment of the present disclosure, and the device includes: an acquisition module 401, a determination module 402, and an adjustment module 403; wherein,

[0126] An acquisition module 401 is used to acquire a laser current value for exciting mixed color fluorescence according to a preset projection brightness requirement;

[0127] A determination module 402 is used to determine the ratio range between the plurality of primary color lasers and the corresponding monochromatic fluorescence in the mixed color fluorescence based on a preset color gamut requirement and a preset speckle contrast requirement;

[0128] The adjustment module 403 is used to determine the primary color current value that needs to be set for each primary color laser based on the ratio range and laser current value determined for each primary color laser.

[0129] By adopting the above laser adjustment device, when the laser current value for exciting fluorescence preset for the preset projection brightness requirement is obtained, the ratio range between the multiple primary color lasers and the corresponding monochromatic fluorescence in the mixed color fluorescence can be determined based on the preset color gamut requirement and the preset speckle contrast requirement, and then the primary color current value to be set for each primary color laser is determined based on the ratio range and the laser current value. The present disclosure adjusts the primary color current value by the ratio range between the primary color laser and the corresponding monochromatic fluorescence in the mixed color fluorescence. Since the ratio range is determined based on the preset color gamut requirement and the preset speckle contrast requirement, the corresponding adjusted primary color laser can significantly eliminate the adverse effects caused by speckle, thereby improving the picture projection effect. In addition, the primary color current value set in the above manner can also meet the maximum efficiency ratio requirement, so that the relevant light source equipment is in a power saving and energy-saving state.

[0130] In a possible implementation manner, the adjustment module 403 is used to determine the primary color current value to be set for each primary color laser based on the ratio range and laser current value determined for each primary color laser according to the following steps:

[0131] For each primary color laser, a corresponding primary color ratio is selected from a ratio range determined by the primary color laser;

[0132] Based on the primary color ratio and laser current value selected for each primary color laser, the primary color current value to be set for each primary color laser is determined.

[0133] In a possible implementation manner, the adjustment module 403 is used to select a corresponding primary color ratio from a ratio range determined by the primary color laser according to the following steps:

[0134] For each primary color laser, a preset number of candidate ratios are selected from the ratio range determined by the primary color laser;

[0135] By means of a preset constraint relationship between the total efficiency ratio and the brightness of each primary color laser, an alternative ratio is selected for each primary color laser so as to maximize the total efficiency ratio; wherein the total efficiency ratio is determined by the efficiency ratios corresponding to each primary color laser and the mixed color phosphor respectively;

[0136] The selected candidate ratio is determined as the primary color ratio corresponding to the primary color laser.

[0137] In a possible implementation, the adjustment module 403 is used to select a candidate ratio for each primary color laser that maximizes the total efficiency ratio according to the following steps:

[0138] Before selecting the candidate ratio that maximizes the total efficiency ratio for each primary color laser, a standard primary color laser is determined from each primary color laser, and a preset number of primary color ratios corresponding to the standard primary color laser are determined;

[0139] By using the preset constraint relationship between the total efficiency ratio and the brightness of each primary color laser, an alternative ratio is selected for the standard primary color laser to maximize the total efficiency ratio;

[0140] The selected candidate ratio is determined as the primary color ratio corresponding to the standard primary color laser, and the primary color ratios corresponding to the respective primary color lasers are determined based on the primary color ratio corresponding to the standard primary color laser.

[0141] In a possible implementation, the adjustment module 403 is used to select a candidate ratio that maximizes the total efficiency ratio for the standard primary color laser according to the following steps:

[0142] The preset constraint relationship is converted based on a first corresponding relationship between the brightness of the primary color laser and the alternative ratio, and a second corresponding relationship between the alternative ratios of the primary color lasers other than the standard primary color laser and the alternative ratio of the standard primary color laser, to obtain a conversion constraint relationship; the conversion constraint relationship is related to the alternative ratio corresponding to the standard primary color laser;

[0143] Each candidate ratio selected for the standard primary color laser is used as an input parameter of the conversion constraint relationship, and the total efficiency ratio is output;

[0144] Select the alternative ratio with the largest total efficiency ratio from various alternative ratios.

[0145] In a possible implementation, the determination module 402 is used to determine the ratio ranges between the plurality of primary color lasers and the corresponding monochromatic fluorescence in the mixed color fluorescence based on the preset color gamut requirement and the preset speckle contrast requirement according to the following steps:

[0146] Based on the preset color gamut requirement, determining the minimum value in the ratio range between the plurality of primary color lasers and the corresponding single color fluorescence in the mixed color fluorescence; and

[0147] Based on the preset speckle contrast requirement, the maximum value in the ratio range between the plurality of primary color lasers and the corresponding monochromatic fluorescence in the mixed color fluorescence is determined.

[0148] In a possible implementation, the determination module 402 is configured to determine the minimum value in the ratio range according to the following steps:

[0149] Obtaining the color coordinates of each primary color laser, and the brightness value and color coordinates of the mixed color fluorescence under the excitation of the laser current value;

[0150] Based on the color coordinates of each primary color laser and the brightness value and color coordinates of the mixed color phosphor, the brightness value of each primary color laser is determined by a preset constraint relationship between the color coordinates of the mixed light and the brightness information of each primary color laser; wherein the mixed light is obtained by mixing the primary color laser and the mixed color phosphor;

[0151] Based on the ratio relationship between the brightness value of each primary color laser and the brightness value of the mixed color fluorescent light, the minimum value in the ratio range is determined.

[0152] In a possible implementation, when the preset constraint relationship includes a third correspondence relationship between the color coordinates of the mixed light and the tristimulus information, and a fourth correspondence relationship between the tristimulus information and the brightness information of each primary color laser, the determination module 402 is used to determine the brightness value of each primary color laser according to the preset constraint relationship between the color coordinates of the mixed light and the brightness information of each primary color laser in the following steps:

[0153] The color coordinates of each primary color laser and the brightness value and color coordinates of the mixed color fluorescent light are used as input parameters of the fourth corresponding relationship to determine the tristimulus values ​​including the brightness information of each primary color laser;

[0154] Using the tristimulus values ​​as input parameters of the third correspondence, determining the color coordinate values ​​of the mixed light including the brightness information of each primary color laser;

[0155] When the color coordinate value conforms to the preset color coordinate range, the brightness value of each primary color laser is determined.

[0156] In a possible implementation, the determination module 402 is configured to determine the maximum value in the ratio range according to the following steps:

[0157] Based on the preset speckle contrast requirement, determining a preset constraint relationship between the preset speckle contrast and the ratio corresponding to each primary color laser;

[0158] Determine the proportion of each primary color laser based on a preset constraint relationship;

[0159] The determined ratio is taken as the maximum value in the ratio range.

[0160] In a possible implementation manner, the above device further includes:

[0161] The prompt module 404 is used to generate a prompt message for reminding the user to change the screen when the determined minimum value is greater than the maximum value.

[0162] It should be noted that the device in the implementation mode of the present application can implement each process of the implementation mode of the aforementioned method and achieve the same effects and functions, which will not be repeated here.

[0163] The present disclosure also provides an electronic device, such as Figure 5 , which is a schematic diagram of the structure of an electronic device provided by an embodiment of the present disclosure, includes: a processor 501, a memory 502, and a bus 503. The memory 502 stores machine-readable instructions executable by the processor 501 (for example, Figure 4In the device, the execution instructions corresponding to the acquisition module 401, the determination module 402, and the adjustment module 403 are obtained, and when the electronic device is running, the processor 501 communicates with the memory 502 through the bus 503, and the machine-readable instructions are executed by the processor 501 to perform the following processing:

[0164] Obtaining a laser current value preset for exciting mixed-color fluorescence according to a preset projection brightness requirement;

[0165] Determine the ratio range between the plurality of primary color lasers and the corresponding monochromatic fluorescence in the mixed color fluorescence based on the preset color gamut requirement and the preset speckle contrast requirement;

[0166] Based on the ratio ranges and laser current values ​​respectively determined for the primary color lasers, the primary color current values ​​that need to be set for the primary color lasers are determined.

[0167] The embodiment of the present disclosure also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the laser adjustment method described in the above method embodiment are executed. The storage medium can be a volatile or non-volatile computer-readable storage medium.

[0168] The present disclosure also provides a computer program product that carries a program code. The program code includes instructions that can be used to execute the steps of the laser adjustment method described in the above method embodiment. For details, please refer to the above method embodiment, which will not be repeated here.

[0169] The computer program product may be implemented in hardware, software or a combination thereof. In one optional embodiment, the computer program product is implemented as a computer storage medium. In another optional embodiment, the computer program product is implemented as a software product, such as a software development kit (SDK).

[0170] Each embodiment in this application is described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device, equipment, and computer-readable storage medium embodiments, since they are basically similar to the method embodiments, their descriptions are simplified, and the relevant parts can be referred to the partial description of the method embodiments.

[0171] The apparatus, equipment and computer-readable storage medium provided in the embodiments of the present application correspond one-to-one to the method. Therefore, the apparatus, equipment and computer-readable storage medium also have similar beneficial technical effects as the corresponding methods. Since the beneficial technical effects of the methods have been described in detail above, the beneficial technical effects of the apparatus, equipment and computer-readable storage medium will not be repeated here.

[0172] It will be appreciated by those skilled in the art that the embodiments of the present disclosure may be provided as methods, devices (equipment or system), or computer-readable storage media. Therefore, the present disclosure may be in the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may be in the form of a computer-readable storage medium implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0173] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, apparatuses (devices or systems), and computer-readable storage media according to embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0174] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0175] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0176] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0177] The memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0178] Computer-readable media include permanent and non-permanent, removable and non-removable media that can be used to store information by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. In addition, although the operations of the disclosed method are described in a particular order in the accompanying drawings, this does not require or imply that these operations must be performed in this particular order, or that all the operations shown must be performed to achieve the desired results. Additionally or alternatively, some steps can be omitted, multiple steps can be combined into one step, and / or one step can be decomposed into multiple steps.

[0179] Although the spirit and principle of the present disclosure have been described with reference to several specific embodiments, it should be understood that the present disclosure is not limited to the disclosed specific embodiments, and the division of various aspects does not mean that the features in these aspects cannot be combined to benefit, and such division is only for the convenience of expression. The present disclosure is intended to cover various modifications and equivalent arrangements included in the spirit and scope of the attached claims.

Claims

1. A laser adjustment method, characterized in that: The method comprises: Obtaining a laser current value preset for exciting mixed-color fluorescence according to a preset projection brightness requirement; Determine the ratio ranges between the plurality of primary color lasers and the corresponding monochromatic fluorescence in the mixed color fluorescence based on the preset color gamut requirement and the preset speckle contrast requirement; the minimum value in the ratio range is determined by the preset color gamut requirement, and the maximum value in the ratio range is determined by the preset speckle contrast requirement; Based on the respectively determined ratio ranges of the primary color lasers and the laser current values, the primary color current values ​​to be set for the primary color lasers are determined.

2. The method according to claim 1, characterized in that The determining of the primary color current value to be set for each primary color laser based on the respectively determined ratio range of each primary color laser and the laser current value includes: For each primary color laser, selecting a corresponding primary color ratio from a ratio range determined by the primary color laser; Based on the primary color ratio selected for each primary color laser and the laser current value, the primary color current value that needs to be set for each primary color laser is determined.

3. The method according to claim 2, characterized in that The selecting a corresponding primary color ratio from the ratio range determined by the primary color laser comprises: For each primary color laser, selecting a preset number of candidate ratios from the ratio range determined by the primary color laser; By means of a preset constraint relationship between the total efficiency ratio and the brightness of each primary color laser, an alternative ratio is selected for each primary color laser so as to maximize the total efficiency ratio; wherein the total efficiency ratio is determined by the efficiency ratios corresponding to each primary color laser and the mixed color phosphor respectively; The selected candidate ratio is determined as the primary color ratio corresponding to the primary color laser.

4. The method according to claim 3, characterized in that: Before selecting the candidate ratio for each primary color laser so as to maximize the total efficiency ratio, the method further includes: Determine a standard primary color laser from each primary color laser, and determine a preset number of primary color ratios corresponding to the standard primary color laser; The method of selecting the alternative ratio for each primary color laser so as to maximize the total efficiency ratio includes: Selecting an alternative ratio that maximizes the total efficiency ratio for the standard primary color lasers based on a preset constraint relationship between the total efficiency ratio and the brightness of each primary color laser; The selected candidate ratio is determined as the primary color ratio corresponding to the standard primary color laser, and the primary color ratios corresponding to the respective primary color lasers are determined based on the primary color ratio corresponding to the standard primary color laser.

5. The method according to claim 4, characterized in that The alternative ratio selected for the standard primary color laser to maximize the total efficiency ratio includes: The preset constraint relationship is converted based on a first corresponding relationship between the brightness of the primary color laser and the alternative ratio, and a second corresponding relationship between the alternative ratios of other primary color lasers except the standard primary color laser and the alternative ratio of the standard primary color laser, to obtain a conversion constraint relationship; the conversion constraint relationship is related to the alternative ratio corresponding to the standard primary color laser; Each candidate ratio selected for the standard primary color laser is used as an input parameter of the conversion constraint relationship, and a total efficiency ratio is obtained as an output; Select the alternative ratio with the largest total efficiency ratio from various alternative ratios.

6. The method according to any one of claims 1 to 5, characterized in that: To determine the minimum value in the ratio range, proceed as follows: Acquire the color coordinates of each primary color laser, and the brightness value and color coordinates of the mixed color fluorescence under the excitation of the laser current value; Based on the color coordinates of each primary color laser and the brightness value and color coordinates of the mixed color phosphor, the brightness value of each primary color laser is determined by a preset constraint relationship between the color coordinates of the mixed light and the brightness information of each primary color laser; wherein the mixed light is obtained by mixing the primary color laser and the mixed color phosphor; Based on the ratio relationship between the brightness value of each primary color laser and the brightness value of the mixed color fluorescent light, the minimum value in the ratio range is determined.

7. The method according to claim 6, characterized in that In a case where the preset constraint relationship includes a third correspondence relationship between the color coordinates of the mixed light and the tristimulus information, and a fourth correspondence relationship between the tristimulus information and the brightness information of each primary color laser, the brightness value of each primary color laser is determined by the preset constraint relationship between the color coordinates of the mixed light and the brightness information of each primary color laser, including: Using the color coordinates of each primary color laser and the brightness value and color coordinates of the mixed color fluorescent light as input parameters of the fourth corresponding relationship, determining the tristimulus values ​​including the brightness information of each primary color laser; Using the tristimulus values ​​as input parameters of the third corresponding relationship, determining the color coordinate value of the mixed light including the brightness information of each primary color laser; When the color coordinate value conforms to the preset color coordinate range, the brightness value of each primary color laser is determined.

8. The method according to any one of claims 1 to 5, characterized in that: Determine the maximum value in the ratio range as follows: Based on the preset speckle contrast requirement, determining a preset constraint relationship between the preset speckle contrast and the ratio corresponding to each primary color laser; Determine the proportion of each primary color laser based on the preset constraint relationship; The determined ratio is taken as the maximum value in the ratio range.

9. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: When the determined minimum value is greater than the maximum value, a prompt message is generated to remind the user to change the screen.

10. A laser adjustment device, characterized in that: The device comprises: An acquisition module, used to acquire a laser current value for exciting mixed-color fluorescence that is preset according to a preset projection brightness requirement; A determination module, configured to determine a ratio range between a plurality of primary color lasers and a corresponding monochromatic fluorescence in the mixed color fluorescence based on a preset color gamut requirement and a preset speckle contrast requirement; a minimum value in the ratio range is determined by the preset color gamut requirement, and a maximum value in the ratio range is determined by the preset speckle contrast requirement; The adjustment module is used to determine the primary color current value that needs to be set for each primary color laser based on the ratio range determined for each primary color laser and the laser current value.

11. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate via the bus, and when the machine-readable instructions are executed by the processor, the laser adjustment method as described in any one of claims 1 to 9 is performed.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the laser adjustment method according to any one of claims 1 to 9 is executed.

Images