Adjustment method of filter element, light source device and projection equipment

Abstract

This application discloses a method for adjusting a filter element, a light source device, and a projection device. The method obtains ambient brightness; determines a filter factor based on the ambient brightness; determines spectral information corresponding to the filter element based on the filter factor; determines a target voltage corresponding to the filter element based on the spectral information; and uses the target voltage to adjust the filter element's transmission spectrum so that light corresponding to the spectral information passes through the filter element. In this application, the target voltage is determined based on the ambient brightness, and this target voltage can be used to adjust the filter element's filtering characteristics, allowing light of different wavelength ranges to pass through the filter element under different ambient brightness conditions, thereby adjusting the output brightness and color gamut. Thus, this solution can meet different brightness and color gamut requirements.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a method for adjusting a filter element, a light source device, and a projection device. Background Art

[0002] A projection device is a device that projects images or videos onto a screen or wall. When using projection devices (such as projectors and laser TVs), the brightness and color gamut of the display device often need to be adjusted based on various factors, such as ambient light, temperature, and user preferences. How to better adjust the brightness and color gamut of display devices is an urgent problem that needs to be solved. Summary of the Invention

[0003] The present application provides a method for adjusting a filter element, a light source device, and a projection device, which can meet the requirements of different brightness and color gamuts.

[0004] The present application provides a method for adjusting a filter element, comprising:

[0005] Get the ambient brightness;

[0006] Determine the filtering factor according to the ambient brightness;

[0007] Determine the spectral information corresponding to the filter element according to the filter factor;

[0008] Determine the target voltage corresponding to the filter element according to the spectral information;

[0009] The target voltage is used to adjust the transmission spectrum of the filter element so that light corresponding to the spectrum information passes through the filter element.

[0010] In some embodiments, the filter element is adapted for use in a light source device, and determines a filter factor based on ambient brightness, including:

[0011] Obtaining a transmittable light wavelength range of the filter element and an adjustable brightness range of the light source device;

[0012] Determine the brightness factor based on the adjustable brightness range and the ambient brightness;

[0013] The filter factor is determined based on the brightness factor and the transmittable light wavelength range.

[0014] In some embodiments, obtaining the ambient brightness includes:

[0015] Periodically collect brightness information of ambient light;

[0016] Determine a current brightness difference between the brightness information of the ambient light at a previous moment and the brightness information of the ambient light at a current moment;

[0017] When the current brightness difference is greater than or equal to the first preset brightness difference threshold, the ambient brightness is determined according to brightness information of the ambient light at the previous moment or the current moment.

[0018] In some embodiments, determining the ambient brightness based on the brightness information of the ambient light at a previous moment includes:

[0019] Determine multiple target brightness differences between multiple pieces of ambient light brightness information collected within a preset time period after the current moment and the ambient light brightness information at the previous moment;

[0020] If the number of target brightness differences greater than or equal to the first preset brightness difference threshold among the multiple target brightness differences is greater than or equal to the preset number threshold, then calculating the ambient brightness based on the brightness information of the ambient light collected within the preset time period;

[0021] If the number of target brightness differences greater than or equal to the first preset brightness difference threshold among the multiple target brightness differences is less than the preset number threshold, return to the execution step to determine the current brightness difference between the brightness information of the ambient light at the previous moment and the brightness information of the ambient light at the current moment.

[0022] In some embodiments, the filter element is adapted for use in a light source device, and after obtaining the ambient brightness, further comprises:

[0023] When the ambient brightness is greater than the maximum brightness of the light source device, update the ambient brightness to the maximum brightness;

[0024] When the ambient brightness is lower than the minimum brightness of the light source device, the ambient brightness is updated to the minimum brightness;

[0025] Determine the filtering factor based on the ambient brightness, including:

[0026] The filter factor is determined according to the updated ambient brightness.

[0027] The present application provides a light source device, which includes a filter element, the filter element includes multiple color filter areas, each color filter area includes color filter blocks corresponding to multiple colors, and each color corresponds to one or more color filter blocks;

[0028] The target color filter block is adjusted by the above-mentioned adjustment method of the filter element. The target color filter block is any one or more color filter blocks corresponding to any one or more colors among the color filter blocks corresponding to multiple colors. The target color filter block is an electrochromic material and / or a color-changing photosensitizer.

[0029] In some embodiments, when the target color filter block is a plurality of color filter blocks corresponding to a plurality of colors;

[0030] When the ambient brightness is less than or equal to a second preset brightness threshold, adjusting a color filter block corresponding to a color;

[0031] When the ambient brightness is greater than a second preset brightness threshold and less than a third preset brightness threshold, adjusting multiple color filter blocks corresponding to one color;

[0032] When the ambient brightness is greater than a third preset brightness threshold, a plurality of color filter blocks corresponding to a plurality of colors are adjusted.

[0033] In some embodiments, the color filter blocks corresponding to the multiple colors include color filter blocks corresponding to red, green or yellow, and blue, one or two color filter blocks corresponding to green or yellow are selected, and the target color filter block is one or both of the two color filter blocks corresponding to green or yellow.

[0034] Alternatively, the color filter blocks corresponding to the multiple colors include color filter blocks corresponding to red, green, blue and yellow, and the target color filter block is the color filter block corresponding to green and / or the color filter block corresponding to yellow.

[0035] In some embodiments, when green or yellow corresponds to two color filter blocks, the two color filter blocks corresponding to green or yellow are arranged diagonally.

[0036] The present application provides a projection device, which includes the above-mentioned filter element.

[0037] The present application also provides a computer-readable storage medium, which stores a plurality of instructions, wherein the instructions are suitable for loading by a processor to execute the steps in any one of the filter element adjustment methods provided in the present application.

[0038] In this application, the ambient brightness is obtained; a filter factor is determined based on the ambient brightness; spectral information corresponding to the filter element is determined based on the filter factor; a target voltage corresponding to the filter element is determined based on the spectral information; and the target voltage is used to adjust the transmission spectrum of the filter element to allow light corresponding to the spectral information to pass through the filter element. In this application, the target voltage is determined based on the ambient brightness, and this target voltage can be used to adjust the filtering characteristics of the filter element, allowing light of different wavelength ranges to pass through the filter element under different ambient brightness conditions, thereby adjusting the output brightness and color gamut. Thus, this solution can meet the needs of different brightness and color gamut requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in this application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 This is a flow chart of a method for adjusting a filter element provided in the present application;

[0041] Figure 2 This is a structural diagram of a light source device provided by this application;

[0042] Figure 3 This is a schematic structural diagram of a filter element provided by the present application;

[0043] Figure 4 This is a structural diagram of a projection device provided by this application. DETAILED DESCRIPTION

[0044] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in this application. Obviously, the embodiments described are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0045] The present application provides a method for adjusting a filter element, a light source device, and a projection device.

[0046] It should be noted that the serial numbers of the following embodiments are not intended to limit the preferred order of the embodiments.

[0047] In this embodiment, a method for adjusting a filter element is provided, such as Figure 1 As shown, the specific process of the adjustment method of the filter element can be as follows:

[0048] 110. Get the ambient brightness.

[0049] In some embodiments, obtaining the ambient brightness may include the following steps:

[0050] (1) Periodically collect ambient light brightness information. The ambient light brightness information can be represented by brightness value, light intensity value, luminous flux, illuminance value, etc. The photosensitive module can collect ambient light brightness information with a period of Δt.

[0051] (2) Determine the current brightness difference between the brightness information of the ambient light at the previous moment and the brightness information of the ambient light at the current moment.

[0052] (3) When the current brightness difference is greater than or equal to a first preset brightness difference threshold, the ambient brightness is determined based on the brightness information of the ambient light at the previous moment or the current moment. The first preset brightness difference threshold can be customized based on actual application conditions.

[0053] Optionally, the ambient brightness may be directly calculated based on the brightness information of the ambient light at the current moment.

[0054] Optionally, the average value, standard deviation, etc. of the brightness can be calculated as the ambient brightness based on the brightness information of multiple ambient lights collected within a preset time period after the current moment. The preset time period can be customized according to the actual application, such as 30 seconds, 1 minute, or 2 minutes.

[0055] Optionally, multiple target brightness differences between multiple pieces of ambient light brightness information collected within a preset time period after the current moment and the ambient light brightness information at the previous moment can be determined; if the number of target brightness differences greater than or equal to a first preset brightness difference threshold among the multiple target brightness differences is greater than or equal to the preset number threshold, the ambient brightness is calculated based on the ambient light brightness information collected within the preset time period; if the number of target brightness differences greater than or equal to the first preset brightness difference threshold among the multiple target brightness differences is less than the preset number threshold, the process returns to the step of determining the current brightness difference between the ambient light brightness information at the previous moment and the ambient light brightness information at the current moment. The preset number threshold can be customized based on actual application conditions, for example, the preset number threshold can be set to ninety-five percent, ninety-eight percent, or the like of the number of pieces of ambient light brightness information collected within the preset time period.

[0056] For example, the brightness value L of the ambient light is periodically collected through the photosensitive module for a period of Δt, and the current brightness difference between two adjacent brightness values of the ambient light (the brightness value of the ambient light at the previous moment and the brightness value of the ambient light at the current moment) is calculated as ΔL; if ΔL is less than the first preset brightness difference threshold Thresh1, the current brightness difference between the brightness values of the two adjacent ambient lights is continued to be calculated as ΔL.

[0057] If ΔL is greater than or equal to the first preset brightness difference threshold Thresh1 , then timer Timer1 is started. The timing duration of Timer1 is set to a preset time period (eg, 30 seconds). Timer1 may be a multiple of Δt.

[0058] During the operation of timer1 (i.e., within the preset time period), multiple target brightness differences ΔL between the brightness value of the ambient light at the previous moment and the brightness values of the multiple ambient lights collected are calculated. o ; If multiple ΔL o ΔL greater than or equal to the first preset brightness difference threshold Thresh1 o If the number is less than the preset number threshold m, timer1 is stopped and reset, and the current brightness difference between two adjacent ambient light brightness values is continued to be calculated as ΔL.

[0059] If multiple ΔL o ΔL greater than or equal to the first preset brightness difference threshold Thresh1 o If the number is greater than the preset threshold m, the ambient brightness L can be calculated using the following formulaf :

[0060]

[0061] or

[0062]

[0063] Wherein, N represents the number of brightness values of ambient light collected within a preset time period; L i Indicates the brightness value of the ambient light collected for the i-th time.

[0064] In some embodiments, the ambient brightness may be determined based on brightness information of the ambient light acquired in real time.

[0065] In some embodiments, the filter element is adapted for use with a light source device. After obtaining the ambient brightness, the filter element may update the ambient brightness to the maximum brightness Lmax when the ambient brightness is greater than the maximum brightness Lmax of the light source device. f = Lmax; when the ambient brightness is less than the minimum brightness Lmin of the light source device, update the ambient brightness to the minimum brightness L f =Lmin. Therefore, L f Correction can avoid the situation where the brightness you want to adjust exceeds the capability of the light source device.

[0066] 120. Determine a filtering factor based on ambient brightness.

[0067] In some embodiments, the filter element is adapted for use with a light source device, and the transmittable wavelength range of the filter element and the adjustable brightness range of the light source device can be obtained. For example, the transmittable wavelength range is represented by (WL_y, WL_g), and the adjustable brightness range is represented by (Lmax, Lmin). A brightness factor is determined based on the adjustable brightness range and the ambient brightness; a filter factor is determined based on the brightness factor and the transmittable wavelength range. For example, the filter factor F can be calculated using the following formula:

[0068] F=(WL_y-WL_g)*(Lf-Lmin) / (Lmax-Lmin)

[0069] Wherein, WL_y represents the maximum value of the wavelength of light that can be transmitted by the filter element, and WL_g represents the minimum value of the wavelength of light that can be transmitted by the filter element.

[0070] 130. Determine spectral information corresponding to the filter element according to the filter factor.

[0071] For example, the spectral information can be represented by a peak in the spectrum, and the spectral information Twl corresponding to the filter element can be calculated using the minimum value of the transmittance wavelength of the filter element and the filter factor, as shown in the following formula:

[0072] Twl=WL_g+F

[0073] 140. Determine a target voltage corresponding to the filter element based on the spectral information.

[0074] The mapping relationship between the transmission spectrum of the filter element and the voltage can be obtained, and the target voltage corresponding to the spectrum information can be determined based on the mapping relationship. For example, the target voltage U1 can be calculated using the following formula:

[0075] U1=Twl*v1*U0

[0076] Wherein, U0 represents the voltage value corresponding to the spectrum of the primary color light (red light, green light, or blue light); v1 represents the conversion coefficient.

[0077] 150. Use a target voltage to adjust the transmission spectrum of the filter element so that light corresponding to the spectral information passes through the filter element.

[0078] For example, a driving circuit corresponding to the filter element may be controlled to provide a target voltage to the filter element.

[0079] In this embodiment, the target voltage is determined by the ambient brightness. This target voltage can be used to adjust the filtering characteristics of the filter element, allowing light of different wavelengths to pass through the filter element at different ambient brightness levels, thereby adjusting the output brightness and color gamut. Thus, this solution can meet the needs of different brightness and color gamuts.

[0080] In this embodiment, a light source device is provided, which includes a filter element 5. For example, Figure 2 As shown, the light source device includes a light source 1, a focusing element 2, a light homogenizing element 3, a spatial light modulator 4, a filter element 5, a driving circuit 6, and an optical lens 7. The driving circuit 6 is used to provide a target voltage to the filter element 5 to adjust the transmission spectrum of the filter element 5. The light source 1 can be a laser light source or an LED light source, etc.; the spatial light modulator 4 can be a liquid crystal display (LCD).

[0081] The filter element 5 includes multiple color filter areas, each of which includes color filter blocks corresponding to multiple colors, and each color corresponds to one or more color filter blocks. Figure 1 The filter element adjustment method described above adjusts a target filter block. The target filter block is any one or more filter blocks corresponding to any one or more colors among a plurality of filter blocks corresponding to a plurality of colors. The target filter block is an electrochromic material and / or a color-changing photosensitizer. Specifically, when the driver circuit 6 is configured to provide a target voltage to the filter element 5, the target voltage is provided to the target filter block so that light corresponding to the spectral information passes through the target voltage.

[0082] Optionally, the color filter blocks corresponding to the multiple colors include color filter blocks corresponding to red, green or yellow, and blue, green or yellow corresponds to one or two color filter blocks, and the target color filter block is one or both of the two color filter blocks corresponding to green or yellow;

[0083] Optionally, the color filter blocks corresponding to the multiple colors include color filter blocks corresponding to red, green, blue and yellow, and the target color filter block is the color filter block corresponding to green and / or the color filter block corresponding to yellow.

[0084] Optionally, when green or yellow corresponds to two color filter blocks, the two color filter blocks corresponding to green or yellow are arranged diagonally.

[0085] For example, if Figure 3 As shown, it is a schematic structural diagram of a filter element 5. The filter element 5 includes multiple color filter areas. Each color filter area includes color filter blocks (R, G, G and B) corresponding to red, green and blue. Green corresponds to two color filter blocks G. The two color filter blocks G corresponding to green are arranged diagonally. The target color filter block is one or two of the two color filter blocks corresponding to green.

[0086] In some embodiments, when the target color filter block is a plurality of color filter blocks corresponding to multiple colors, when the ambient brightness is less than or equal to a second preset brightness threshold, one color filter block corresponding to one color is adjusted; when the ambient brightness is greater than the second preset brightness threshold and less than a third preset brightness threshold, multiple color filter blocks corresponding to one color are adjusted; and when the ambient brightness is greater than the third preset brightness threshold, multiple color filter blocks corresponding to multiple colors are adjusted. The second and third preset brightness thresholds can be customized based on actual application conditions.

[0087] For example, each filter area of the filter element includes three filter blocks R, G, and B, among which the G filter block is set as the target filter block; when the ambient light becomes brighter, the transmission spectrum of the target filter block can be changed from the green spectrum to the yellow spectrum through the adjustment method of the above-mentioned filter element, thereby increasing the brightness and achieving infinite change; when the ambient light becomes darker, the transmission spectrum of the target filter block is changed from the yellow spectrum to the green spectrum, meeting the brightness requirements while enhancing the color gamut coverage and improving the user's viewing experience.

[0088] For example, each filter region of a filter element includes four filter blocks: R, G, G, and B. Two G filter blocks are set as target filter blocks, and these two target filter blocks can be adjusted synchronously using the filter element adjustment method described above. Alternatively, different conditions can be set for serial adjustment. For example, if the ambient brightness is within Lmax, only one G filter block is adjusted. Once Lmax is exceeded and the first filter block has reached its limit, the second G filter block is adjusted.

[0089] Optionally, the spatial light modulator 4 can also be a digital micromirror device (DMD) or a liquid crystal on silicon device (LCOS); the spatial light modulator has a corresponding driver chip, for example, the digital micromirror device can be driven by a digital light processing element (DLP).

[0090] In this embodiment, a target voltage is determined based on ambient brightness. This target voltage can be used to adjust the filtering characteristics of a filter element in the light source device. This allows light of different wavelengths generated by the light source in the light source device to pass through the filter element at different ambient brightness levels, thereby adjusting the brightness and color gamut of the light emitted by the light source device. Thus, the light source device provided in this embodiment can meet different brightness and color gamut requirements.

[0091] The present application also provides a projection device, such as Figure 2 As shown, it shows a structural schematic diagram of the projection device involved in this application.

[0092] In some embodiments, the projection device may include an image processor 201 and a light source device 202.

[0093] Image processor 201 may be a microcontroller, a dedicated image processing chip, or the like. The microcontroller may be an ARM chip, a microcontroller unit (MCU), or the like. The dedicated image processing chip may be an image signal processor (ISP), a graphics processing unit (GPU), or an embedded neural network processing unit (NPU). Image processor 201 may be used for video decoding, image quality processing, and the like.

[0094] The light source device 202 may be Figure 2 The light source device shown.

[0095] In some embodiments, the projection device further includes a central controller 203 having one or more processing cores, which may be a CPU, ARM, MCU, or other controller. The central controller 203 is the control center of the projection device, connecting various components of the entire projection device using various interfaces and lines. It can run or execute software programs and / or operating systems stored in the memory 204, and access data stored in the memory 204.

[0096] In some embodiments, the projection device further includes one or more computer-readable storage media memory 204, an input module 205, a communication module 206, a power supply 207 and other components. Those skilled in the art will understand that Figure 2 The structure of the projection device shown in the figure does not constitute a limitation on the projection device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0097] The memory 204 can be used to store software programs and an operating system. The central controller 203 executes various functional applications and data processing by running the software programs and operating system stored in the memory 204. The memory 204 may primarily include a program storage area and a data storage area. The program storage area may store the operating system and at least one application required for a function (such as a sound playback function, an image playback function, etc.); the data storage area may store data generated based on the use of the projection device. In addition, the memory 204 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 204 may also include a memory controller to provide the central controller 203 with access to the memory 204.

[0098] The projection device may further include an input module 205, which may be configured to receive input digital or character information and generate remote control, keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0099] The projection device may also include a communication module 206. In some embodiments, the communication module 206 may include a wireless module. The projection device may use the wireless module of the communication module 206 to perform short-range wireless transmission, thereby providing the user with wireless broadband Internet access. For example, the communication module 206 may be used to help the user access streaming media.

[0100] The projection device also includes a power supply 207 for supplying power to various components. In some embodiments, the power supply 207 can be logically connected to the central controller 203 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The power supply 207 can also include one or more DC or AC power supplies, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and other arbitrary components.

[0101] In some embodiments, the central controller 203 may run or execute software programs and / or operating systems stored in the memory 204 to implement various functional applications, such as:

[0102] Get the ambient brightness;

[0103] Determine the filtering factor according to the ambient brightness;

[0104] Determine the spectral information corresponding to the filter element according to the filter factor;

[0105] Determine the target voltage corresponding to the filter element according to the spectral information;

[0106] The target voltage is used to adjust the transmission spectrum of the filter element so that light corresponding to the spectrum information passes through the filter element.

[0107] In some embodiments, the filter element is adapted for use in a light source device, and determines a filter factor based on ambient brightness, including:

[0108] Obtaining a transmittable light wavelength range of the filter element and an adjustable brightness range of the light source device;

[0109] Determine the brightness factor based on the adjustable brightness range and the ambient brightness;

[0110] The filter factor is determined based on the brightness factor and the transmittable light wavelength range.

[0111] In some embodiments, obtaining the ambient brightness includes:

[0112] Periodically collect brightness information of ambient light;

[0113] Determine a current brightness difference between the brightness information of the ambient light at a previous moment and the brightness information of the ambient light at a current moment;

[0114] When the current brightness difference is greater than or equal to the first preset brightness difference threshold, the ambient brightness is determined according to brightness information of the ambient light at the previous moment or the current moment.

[0115] In some embodiments, determining the ambient brightness based on the brightness information of the ambient light at a previous moment includes:

[0116] Determine multiple target brightness differences between multiple pieces of ambient light brightness information collected within a preset time period after the current moment and the ambient light brightness information at the previous moment;

[0117] If the number of target brightness differences greater than or equal to the first preset brightness difference threshold among the multiple target brightness differences is greater than or equal to the preset number threshold, then calculating the ambient brightness based on the brightness information of the ambient light collected within the preset time period;

[0118] If the number of target brightness differences greater than or equal to the first preset brightness difference threshold among the multiple target brightness differences is less than the preset number threshold, return to the execution step to determine the current brightness difference between the brightness information of the ambient light at the previous moment and the brightness information of the ambient light at the current moment.

[0119] In some embodiments, the filter element is adapted for use in a light source device, and after obtaining the ambient brightness, further comprises:

[0120] When the ambient brightness is greater than the maximum brightness of the light source device, update the ambient brightness to the maximum brightness;

[0121] When the ambient brightness is lower than the minimum brightness of the light source device, the ambient brightness is updated to the minimum brightness;

[0122] Determine the filtering factor based on the ambient brightness, including:

[0123] The filter factor is determined according to the updated ambient brightness.

[0124] The specific implementation of the above operations can be found in the previous embodiments and will not be repeated here.

[0125] As can be seen above, the projector can determine a target voltage based on the ambient brightness. This target voltage can then be used to adjust the filter characteristics of the filter element, allowing light of different wavelengths to pass through the filter element at different ambient brightness levels, thereby adjusting the output brightness and color gamut. This solution can therefore meet varying brightness and color gamut requirements.

[0126] Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be accomplished by instructions, or by controlling related hardware through instructions. The instructions may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0127] To this end, the present application provides a computer-readable storage medium storing a plurality of instructions that can be loaded by a processor to execute the steps of any of the filter element adjustment methods provided in the present application. For example, the instructions can execute the following steps:

[0128] Get the ambient brightness;

[0129] Determine the filtering factor according to the ambient brightness;

[0130] Determine the spectral information corresponding to the filter element according to the filter factor;

[0131] Determine the target voltage corresponding to the filter element according to the spectral information;

[0132] The target voltage is used to adjust the transmission spectrum of the filter element so that light corresponding to the spectrum information passes through the filter element.

[0133] The storage medium may include a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0134] According to one aspect of the present application, a computer program product or computer program is provided. The computer program product or computer program includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the method for adjusting a filter element provided in the above-described embodiments.

[0135] Since the instructions stored in the storage medium can execute the steps in any of the filter element adjustment methods provided in the present application, the beneficial effects that can be achieved by any of the filter element adjustment methods provided in the present application can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0136] The above is a detailed introduction to the adjustment method of a filter element, a light source device, a projection device and a computer-readable storage medium provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. A method for adjusting a filter element, characterized in that: The adjustment method of the filter element includes: Get the ambient brightness; Determining a filter factor according to the ambient brightness; determining spectral information corresponding to the filter element according to the filter factor; determining a target voltage corresponding to the filter element according to the spectral information; adjusting the transmission spectrum of the filter element using the target voltage so that light corresponding to the spectral information passes through the filter element; The filter element is applicable to a light source device, and determining a filter factor according to the ambient brightness includes: Obtaining a transmittable light wavelength range of the filter element and an adjustable brightness range of the light source device; Determining a brightness factor according to the adjustable brightness range and the ambient brightness; determining a filtering factor according to the brightness factor and the transmittable light wavelength range; Determining spectral information corresponding to the filter element according to the filter factor includes: According to the minimum value of the transmittance wavelength of the filter element and the filter factor, the spectral information corresponding to the filter element is calculated: Twl=WL_g+F, where Twl represents spectral information, WL_g represents the minimum value of the transmittance wavelength, and F represents the filter factor; The method of adjusting the transmission spectrum of the filter element by using the target voltage so that light corresponding to the spectrum information passes through the filter element includes: Obtain the mapping relationship between the transmission spectrum of the filter element and the voltage, and determine the target voltage corresponding to the spectrum information based on the mapping relationship: U1=Twl*v1*U0, where U0 represents the voltage value corresponding to the transmission spectrum being the spectrum of the primary color light; and v1 represents the conversion coefficient.

2. The method for adjusting a filter element according to claim 1, wherein: The obtaining of the ambient brightness includes: Periodically collect brightness information of ambient light; Determine a current brightness difference between the brightness information of the ambient light at a previous moment and the brightness information of the ambient light at a current moment; When the current brightness difference is greater than or equal to a first preset brightness difference threshold, the ambient brightness is determined according to the brightness information of the ambient light at the previous moment or the current moment.

3. The method for adjusting a filter element according to claim 2, wherein: The determining of the ambient brightness according to the brightness information of the ambient light at the previous moment includes: Determining a plurality of target brightness differences between a plurality of pieces of ambient light brightness information collected within a preset time period after the current moment and the ambient light brightness information at the previous moment; If the number of target brightness differences greater than or equal to the first preset brightness difference threshold among the multiple target brightness differences is greater than or equal to the preset number threshold, then calculating the ambient brightness based on the brightness information of the ambient light collected within the preset time period; If the number of target brightness differences greater than or equal to the first preset brightness difference threshold among the multiple target brightness differences is less than the preset number threshold, return to the execution step to determine the current brightness difference between the brightness information of the ambient light at the previous moment and the brightness information of the ambient light at the current moment.

4. The method for adjusting a filter element according to claim 2, wherein: The filter element is applicable to a light source device, and after obtaining the ambient brightness, the method further includes: When the ambient brightness is greater than the maximum brightness of the light source device, updating the ambient brightness to the maximum brightness; When the ambient brightness is less than the minimum brightness of the light source device, updating the ambient brightness to the minimum brightness; The determining of the filter factor according to the ambient brightness includes: The filter factor is determined according to the updated ambient brightness.

5. A light source device, characterized in that: The light source device includes a filter element, the filter element includes a plurality of color filter areas, each of the color filter areas includes color filter blocks corresponding to a plurality of colors, and each color corresponds to one or more color filter blocks; The target color filter block is adjusted using the adjustment method of the filter element according to any one of claims 1 to 4, wherein the target color filter block is any one or more color filter blocks corresponding to any one or more colors among the color filter blocks corresponding to the multiple colors, and the target color filter block is an electrochromic material and / or a color-changing photosensitizer.

6. The light source device according to claim 5, characterized in that When the target color filter block is a plurality of color filter blocks corresponding to a plurality of colors; When the ambient brightness is less than or equal to a second preset brightness threshold, adjusting a color filter block corresponding to a color; When the ambient brightness is greater than a second preset brightness threshold and less than a third preset brightness threshold, adjusting a plurality of color filter blocks corresponding to one color; When the ambient brightness is greater than a third preset brightness threshold, a plurality of color filter blocks corresponding to a plurality of colors are adjusted.

7. The light source device according to claim 6, wherein: The color filter blocks corresponding to the multiple colors include color filter blocks corresponding to red, green or yellow, and blue, the green or yellow color corresponds to one or two color filter blocks, and the target color filter block is one or two of the two color filter blocks corresponding to the green or yellow color; Alternatively, the color filter blocks corresponding to the multiple colors include color filter blocks corresponding to red, green, blue and yellow, and the target color filter block is the color filter block corresponding to green and / or the color filter block corresponding to yellow.

8. The light source device according to claim 7, wherein: When the green or yellow color corresponds to two color filter blocks, the two color filter blocks corresponding to the green or yellow color are arranged diagonally.

9. A projection device, characterized in that: The projection device includes the light source device according to claim 5.

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