A projection device and method based on partitioned light sources

Abstract

An embodiment of the present invention provides a projection device and method based on a partitioned light source. The projection device includes: at least one light source, the light source being provided with a plurality of partitions, and each partition being provided with a sub-light source; a controller for adjusting the brightness parameters and color parameters of each sub-light source in the light source according to the brightness and color distribution of the input image; an optical path processor, the optical path processor being provided with a photon energy elimination layer for filtering photons in the light source that do not meet the predetermined morphological requirements, and the optical path processor being used to process the effective light-emitting part of the sub-light source to obtain a target light source for projection. This device reduces the loss and scattering of light during the projection process, making the projection image more colorful and having a higher contrast ratio.

Description

Technical Field

[0001] The present invention relates to the fields of light and shadow imaging illumination technology and controllable programming technology, and particularly relates to a projection device and method based on a partitioned light source. Background Art

[0002] With the rapid development of projection technology, continuous innovation of liquid crystal panels, and continuous improvement of light source brightness, projection devices have gradually become an indispensable part of modern home entertainment and business presentations. The light source technologies used in traditional projectors are diverse. Among them, the high-pressure mercury lamp light source was the first to be applied to projectors. Although it can provide a relatively high brightness output, its service life is relatively short, and frequent replacement of the light source has become a major pain point for users. At the same time, the startup and cooling times of high-pressure mercury lamps are relatively long, making it difficult to meet the modern people's demand for instant use. In addition, its energy consumption is relatively high, and a large amount of heat is released, making the heat dissipation system complex and large.

[0003] As an emerging light source technology, the laser light source has been warmly welcomed by the market for its high brightness and long life. However, the cost of the laser light source is relatively high. Especially in high-resolution devices, the complexity of the laser module and the optical system is significantly increased. Moreover, the point light characteristics of the laser light source are prone to produce speckle effects during the optical processing process, affecting the uniformity of the picture, greatly reducing the viewing experience of the audience. A single-chip laser light source cannot achieve a contrast ratio of millions to one, and there are still photons scattered out for pure black in the picture.

[0004] OLED and other display technologies perform excellently in direct-view display devices, but they are inadequate in the projection field. Especially in high-brightness and high-contrast scenarios, the aging and energy consumption problems of OLED panels have not been completely solved, which limits their wide application in the projection field.

[0005] In addition to the problems of the light source technology itself, there are also some common deficiencies in existing projection technologies. For example, the dynamic range is limited. Traditional projectors are difficult to achieve precise regional brightness adjustment, resulting in problems such as high-light spillage and lack of dark-detail occurring frequently. Another example is the energy consumption and thermal management problems. High-brightness light sources are usually accompanied by high energy consumption and heat emissions, which pose higher requirements for the heat dissipation system of the device and also increase the user's usage cost.

[0006] Due to the cost - effectiveness of single - light - source projection and the continuous iteration of the optical path, it has rapidly occupied the market in recent years. However, while the projection technology is constantly advancing, the inherent defects of single - light - source projection technology have gradually emerged. The working principle of single - light - source projection is that a single light source passes through the screen and a specific optical path, and finally the image is projected onto the screen by the lens. Although this technology is popular for its cost - effectiveness and simplicity, the problem of uneven picture brightness has been difficult to solve. Due to the characteristics of a single light source, the brightness of the central area of the picture is relatively high, while the surrounding area is relatively dark. This uneven brightness distribution seriously affects the visual enjoyment of the audience. In addition, single - light - source projection also has obvious deficiencies in dark - field performance. Since the light source needs to be continuously turned on, even in dark - field scenes, it is difficult to achieve completely black, resulting in poor contrast. At the same time, during the production and use of projection equipment, it is extremely sensitive to tiny particles such as dust. Once the screen or optical path components are contaminated with dust, obvious black spots will appear on the picture, and it is quite difficult to clean them up.

[0007] To overcome these defects, various projection technology solutions have emerged in the market. However, these solutions have their own advantages and disadvantages. For example, the single - light - source with a single - chip color liquid - crystal projection technology has a relatively low cost, but the picture brightness uniformity and contrast still need to be improved; the three - lamp projection in the DLP mode has relatively good picture performance, but it is expensive and the contrast is still insufficient; while the three - liquid - crystal - panel projection has excellent picture quality, but the cost is high. At the same time, for the three - liquid - crystal - panel projection, the picture synchronization of the three liquid - crystal panels needs to be considered. Such synchronization requires considering the time - domain consistency and cannot simply solve the light field and the final imaging from the time - code consistency or frame Figure 1 consistency. Therefore, many projections with such a structure will have slight ghosting. Summary of the Invention

[0008] The objective of the embodiments of the present invention is to provide a projection device and method based on a partitioned light source. The device reduces the loss and scattering of light during the projection process, can achieve the effect of zero scattering of dark - field black photons, and makes the projection picture more colorful and have a higher contrast.

[0009] To achieve the above objective, the embodiments of the present invention provide a projection device based on a partitioned light source, and the projection device includes:

[0010] At least one light source, where the light source is provided with a plurality of partitions, and each partition is provided with a sub - light source;

[0011] A controller, configured to adjust the brightness parameters and color parameters of each sub - light source in the light source according to the brightness and color distribution of the input image.

[0012] Optical path processor, the optical path processor is provided with a photon energy elimination layer for filtering photons in the light source that do not meet the predetermined form requirements, and the optical path processor is used to process the effective light-emitting part of the sub-light source to obtain a target light source for projection.

[0013] Optionally, the type of the sub-light source is at least one of an RGB light source, a W light source, an R light source, a G light source, and a B light source;

[0014] The sub-light source is provided with a lens array.

[0015] Optionally, the optical path processor includes a light cutter, a light beam shaper, and an optical path channel, and the light cutter, the light beam shaper, and the optical path channel can be used in a cross-overlapping manner;

[0016] The light cutter is used to control the irradiation range of light and correct the photon propagation direction;

[0017] The light beam shaper is used to change the parallel ratio before and after the parallel light incidence of the light source, constrain light sources of different areas into light sources of a specified area, and control the energy range of the light source;

[0018] The photon energy elimination layer is at least provided on the inner wall of one of the light cutter, the light beam shaper, and the optical path channel;

[0019] The photon energy elimination layer is a carbon nanotube arrangement coating for consuming and converting photons in the light source that do not meet the predetermined form requirements into heat energy;

[0020] The density range of the carbon nanotube arrangement coating is at least 1.0×10 6 ~1.5×10 6 roots / cm 2 。

[0021] Optionally, adjusting the brightness parameters and color parameters of each sub-light source in the light source according to the brightness and color distribution of the input image includes:

[0022] Dividing the input image into multiple image blocks;

[0023] Determining the adjustment parameters of the brightness and color according to the brightness and color distribution of the image block;

[0024] Adjusting the brightness parameters and color parameters of each sub-light source in the light source according to the adjustment parameters;

[0025] The brightness parameters include: highlight enhancement coefficient, average brightness compensation coefficient, and gamma value;

[0026] The color parameters include: gamut conversion parameter and color compensation parameter.

[0027] Optionally, the color value of the light source includes:

[0028] The color value of the light source includes:

[0029] L max = max(R, G, B)

[0030] L avg = 0.2126R + 0.7152G + 0.0722B

[0031] The driving of the sub-light source is:

[0032]

[0033] Where: L max is the maximum color value of the light source, R, G, and B are the color values of red, green, and blue respectively, and L avg is the average color value of the light source,

[0034] I LED is the driving of the sub-light source, is the maximum color value of the input image, is the average color value of the input image,

[0035] α is the highlight enhancement coefficient, β is the average brightness compensation coefficient, and γ is the gamma value.

[0036] Optionally, the optical path processor is used to process the effective light-emitting part of the sub-light source to obtain a target light source, including:

[0037] The optical path processor includes a collimator, which is used to perform integrated collimation processing on the effective light-emitting part of the sub-light source, and the effective light-emitting part meets the color value satisfaction threshold requirement;

[0038] The collimator is an asymmetric free-form surface collimator.

[0039] Optionally, the projection device further includes a heat dissipation system,

[0040] The heat dissipation system includes an aluminum nitride ceramic substrate, a vacuum chamber heat pipe, and microchannel liquid cooling for heat dissipation of the projection device.

[0041] Optionally, multiple sub-light sources and the input image satisfy time frame synchronization based on time code or image frame.

[0042] On the other hand, the present application also proposes a projection method based on a partitioned light source, and the method includes:

[0043] Adjust the brightness parameters and color parameters of each sub-light source in the light source according to the brightness and color distribution of the input image, and the light source is provided with multiple partitions, and each partition is provided with a sub-light source;

[0044] Filter out photons in the light source that do not meet the predetermined morphological requirements;

[0045] Process the effective light-emitting part of the sub-light source to obtain a target light source.

[0046] On the other hand, the present invention also provides a machine-readable storage medium, on which instructions are stored, and when the instructions are executed by a processor, the processor is configured to execute the above-mentioned projection method based on a partitioned light source.

[0047] A projection device based on a partitioned light source according to the present invention includes: at least one light source, the light source is provided with a plurality of partitions, and each partition is provided with a sub-light source; a controller for adjusting the brightness parameters and color parameters of each sub-light source in the light source according to the brightness and color distribution of the input image; an optical path processor, the optical path processor is provided with a photon energy elimination layer for filtering out photons in the light source that do not meet the predetermined morphological requirements, and the optical path processor is used to process the effective light-emitting part of the sub-light source to obtain a target light source for projection. The present invention combines a partitioned light source with a dynamic image algorithm to achieve precise adjustment and full-color control of local light sources, and uses a photon energy elimination layer to eliminate photon interference, reducing light loss and scattering during projection, making the projection image more colorful and having a higher contrast.

[0048] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0049] The drawings are used to provide a further understanding of the embodiments of the present invention, and constitute a part of the specification, and are used to explain the embodiments of the present invention together with the following specific implementation manners, but do not constitute a limitation to the embodiments of the present invention. In the drawings:

[0050] Figure 1 is a schematic diagram of a projection device based on a partitioned light source of the present invention;

[0051] Figure 2 is a schematic diagram of a specific implementation manner of the present invention;

[0052] Figure 3 is a schematic diagram of another specific implementation manner of the present invention;

[0053] Figure 4 is a schematic diagram of a Mini LED array microstructure;

[0054] Figure 5 is a flowchart of the dynamic dimming algorithm of the present invention;

[0055] Figure 6It is a schematic flow diagram of a projection method based on a partitioned light source according to the present invention.

[0056] Explanation of reference numerals

[0057] 100 - Projection device based on partitioned light source;

[0058] 200 - Light source;

[0059] 300 - Controller;

[0060] 400 - Optical path processor. Specific embodiments

[0061] The following will describe in detail the specific embodiments of the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention.

[0062] It should be noted that the acquisition, transmission, storage, use, processing, etc. of data in the technical solution of this application all comply with the relevant regulations of national laws and regulations. In the embodiments of this application, some industry-existing solutions such as certain software, components, models, etc. may be mentioned, and they should be regarded as exemplary. The purpose is only to illustrate the feasibility in the implementation of the technical solution of this application, but it does not mean that the applicant has already or necessarily used this solution.

[0063] As Figure 1 shown, the embodiments of the present invention provide a projection device based on a partitioned light source. The projection device 100 based on a partitioned light source includes: at least one light source 200, the light source 200 is provided with a plurality of partitions, and each partition is provided with a sub-light source; a controller 300 for adjusting the brightness parameters and color parameters of each sub-light source in the light source according to the brightness and color distribution of the input image; an optical path processor 400, the optical path processor 400 is provided with a photon energy elimination layer for filtering photons in the light source that do not meet the predetermined morphological requirements, and the optical path processor 400 is used to process the effective light-emitting part of the sub-light source to obtain a target light source for projection.

[0064] According to a specific implementation manner, the type of the sub-light source is at least one of RGB light sources, W light sources, R light sources, G light sources, and B light sources. The light source can be an LED, a laser, etc. For example, the light source adopts a Mini LED light source. The small size and high efficiency of the Mini LED make the light source system more compact, and at the same time, the light energy utilization rate is significantly improved.

[0065] For example, taking a Mini LED array as an example, each partition contains RGB three-color LEDs. The parameters of the Mini LED array are as follows: Substrate size: 62×35mm; Single partition structure: 8×8 LED matrix, including 36 RGB LEDs (single size 0.2×0.2mm); Driving characteristics: PWM frequency 100kHz, duty cycle adjustable from 1 to 100%. Through a high-dynamic pure white and / or full-color LED bead array, combined with an advanced dynamic image algorithm, precise adjustment and full-color control of local light sources are achieved. This not only improves the brightness and color performance of the projection device but also endows it with higher flexibility and adaptability, capable of meeting different scenarios and requirements. The light source 200 is provided with multiple partitions, and the light source can be divided into 32×32 blocks.

[0066] For example, the input signal is: 12-bit HDR video (HLG / PQ); Color gamut conversion: BT.2020→DCI-P3 (3D-LUT correction); Brightness analysis: The picture is divided into 32×32 blocks (corresponding to the light source partitions); The color values of the light source include:

[0067] L max = max(R, G, B)

[0068] L avg = 0.2126R + 0.7152G + 0.0722B

[0069] The driving of the sub-light source is:

[0070]

[0071] Where: L max is the maximum color value of the light source, R, G, and B are the color values of red, green, and blue respectively, L avg is the average color value of the light source, I LED is the driving of the sub-light source, is the maximum color value of the input image, is the average color value of the input image, α is the highlight enhancement coefficient, β is the average brightness compensation coefficient, and γ is the gamma value. Among them, β = 0.3 (average brightness compensation coefficient), γ = 2.4 (EOTF gamma value).

[0072] The optical drive method can also satisfy according to the CIE LAB color space (chromaticity compensation):

[0073]

[0074] Where: I drive (x, y) is the drive current or drive signal at the position (x, y), used to control the brightness of the sub-light source, L targetis the target brightness value at the position (x, y), that is, the desired brightness level, C chroma (x, y) is the chromaticity compensation value at the position (x, y), which is used to adjust the saturation or hue of the color to ensure the accuracy and consistency of the color. This formula is used to calculate the drive current or signal required for each sub-light source under the given target brightness and chromaticity compensation. In this way, precise control of the brightness and color of the display device can be achieved, thereby improving the quality and accuracy of the display effect.

[0075] The CIE LAB color space is a device-independent color space that can more accurately represent the color differences perceived by the human eye. By performing chromaticity compensation in the CIE LAB color space, the saturation and hue of the color can be better adjusted, thereby achieving a more natural and accurate color display.

[0076] The gamma value (γ) is used to describe the non-linear relationship between the input signal and the output brightness. In display technology, the gamma value is usually used to adjust the brightness and contrast of the image to adapt to the visual characteristics of the human eye. (k = 0.8 - 1.2) is the brightness compensation coefficient, and chroma is the chromaticity compensation term.

[0077] The sub-light source is provided with a microlens array (MLA), and the lens has the functions of condensing light and correction. Specifically, the microlens array (MLA) covers the Mini LED array to improve the collimation efficiency and projection light efficiency of the light. The curvature radius gradient of the lens includes: the center R = 0.8 mm, the edge R = 1.2 mm, and the light efficiency improvement formula is: Efficiency = k×(1 + e-α(R - R0))

[0078] \text{Efficiency} = k\times(1 + e^{-\alpha(R - R_0)})

[0079] Efficiency = k×(1 + e-α(R - R0))

[0080] Among them, k = 0.73 is the experimental fitting coefficient.

[0081] The controller 300 includes an FPGA image processor or / and a high-speed dynamic image processor and a dynamic dimming algorithm chip, which are used to analyze the brightness and color distribution of the input image in real time and dynamically adjust the brightness and color of each light source partition. Specifically, the dynamic dimming of the controller 300 includes: dividing the input image into regions to obtain a plurality of image blocks; analyzing the brightness and color distribution of each image block and calculating the corresponding brightness and color adjustment parameters; dynamically adjusting the brightness and color output of the corresponding light source partition according to the brightness and color adjustment parameters; wherein, the brightness adjustment parameters include a high-light enhancement coefficient, an average brightness compensation coefficient, and a gamma value, and the color adjustment parameters include a gamut conversion parameter and a color compensation parameter.

[0082] The optical path processor includes a light cutter, a light beam concentrator, and an optical path channel; the photon energy elimination layer is disposed at least on the inner wall of one of the light cutter, the light beam concentrator, and the optical path channel; the photon energy elimination layer is a carbon nanotube arrangement coating for consuming and converting photons in the light source that do not meet the predetermined form requirements into heat energy; the density range of the carbon nanotube arrangement coating is at least 1.0×10 6 ~1.5×10 6 roots / cm 2 。

[0083] The optical path processor is used to process the effective light-emitting part of the sub-light source to obtain a target light source, including: the optical path processor includes a collimator for integrally collimating the effective light-emitting part of the sub-light source, and the effective light-emitting part meets the color value satisfaction threshold requirement.

[0084] According to a specific implementation manner, the collimator is an asymmetric free-form surface collimator, and its surface equation is: Z = 1 + \frac{1-(k + 1)c^2r^2}{cr^2+A_1r^4+A_2r^6}

[0085] Z = 1 + \frac{1-(k + 1)c^2r^2}{cr^2+A_1r^4+A_2r^6}

[0086] Z = 1 + \frac{cr^2+A_1r^4+A_2r^6}{1-(k + 1)c^2r^2}

[0087] Wherein the above parameters are all design parameters for optimizing aberration correction and light distribution in the optical path.

[0088] The photon energy elimination layer is a carbon nanotube arrangement coating for consuming and converting photons in the integrated light source that do not meet the predetermined form requirements into heat energy; the density range of the carbon nanotube arrangement coating is at least 1.0×10~1.5×10 roots / cm 2, the carbon nanotube array coating significantly reduces reflection and scattering in the optical path, improving light utilization and color purity. Specifically, the carbon nanotube anti-reflection layer includes: a density of 1.2×10 roots / cm 2 , and the performance parameters are shown in the following table:

[0089] Wavelength (nm) Reflectivity Absorptivity Scattering rate 450 0.08％ 0.15％ 0.02％ 550 0.05％ 0.12％ 0.01％ 650 0.12％ 0.18％ 0.03％

[0090] This application performs photon confinement through a carbon nanotube array coating, converts its consumption into heat energy, and dissipates it through heat conduction, creating unprecedented purity for the optical path. This method can seamlessly replace the absorption unit for useless reflected light in DLP, creating a pure black visual effect under the same light source.

[0091] Adjusting the brightness parameters and color parameters of each sub-light source in the light source according to the brightness and color distribution of the input image includes: dividing the input image into multiple image blocks; determining the adjustment parameters for the brightness and color of the image blocks according to the brightness and color distribution of the image blocks; adjusting the brightness parameters and color parameters of each sub-light source in the light source according to the adjustment parameters; the brightness parameters include: high-light enhancement coefficient, average brightness compensation coefficient, and gamma value; the color parameters include: gamut conversion parameter and color compensation parameter.

[0092] The projection device further includes a heat dissipation system, and the heat dissipation system includes an aluminum nitride ceramic substrate, a vacuum chamber heat pipe, and microchannel liquid cooling for dissipating heat from the projection device.

[0093] According to a specific implementation manner, the heat dissipation system is a three-stage heat dissipation structure: the first-stage heat dissipation is an aluminum nitride ceramic substrate (thermal conductivity 180W / m·K); the second-stage heat dissipation is a vacuum chamber heat pipe (thickness 2mm, thermal resistance 0.08℃ / W); the third-stage heat dissipation is microchannel liquid cooling (flow rate 0.5L / min, pressure drop <15kPa).

[0094] The temperature control model of the heat dissipation system is:

[0095]

[0096] Where: h = 250W / m 2 ·K (convection coefficient), A = 0.12m 2 (heat dissipation area), C = 480J / K (heat capacity). The heat dissipation system effectively reduces the heat generated by the light source module during high-brightness operation, ensuring the stable operation of the system.

[0097] According to a specific implementation manner, such as Figure 2As shown in the figure, the projection device based on zoned light sources of the present application includes four core modules: a light source module, an optical path system, a control unit, and a heat dissipation system. Among them, the light source module can be a MiniLED array (taking 1024 zones as an example) + a microlens array (MLA); the optical path system includes a collimator group, an optical processing device group, an electromagnetic wave elimination carbon nanotube group, and a projection lens; the control unit includes an FPGA image processor or / and a high-speed dynamic image processor (including an LCD) and a dynamic dimming algorithm; the heat dissipation system includes a vapor chamber and a microchannel liquid cooling. The dynamic dimming algorithm includes brightness analysis, zoned drive calculation, and color gamut conversion.

[0098] Due to the uncertainty of photons and the characteristic of light's difficult-to-eliminate diffuse reflection, in addition to beam wave and collimation processing of light, the present application also proposes photon confinement through carbon nanotubes, consuming and converting it into heat energy, which is dissipated through heat conduction, creating unprecedented purity for the optical path, achieving the consumption and transfer of the total energy of electromagnetic waves, and ensuring the purity of the light field.

[0099] To cope with complex scenes of high illumination Figure 3 In it, the monochromatic images of RGB are superimposed in a light combiner and then projected onto the target. As Figure 3 shown, in the case of multiple modules, multiple sub-light sources and input images of the present application satisfy time frame synchronization based on time codes or image frames. Specifically, image mixing is performed following the time frame synchronization principle (time code or image). For time frame synchronization technology, compared with the stability and technical advantages of time domain synchronization, there is a significant improvement.

[0100] Figure 4 is a schematic diagram of the microstructure of a Mini LED array, Figure 4 which marks the zoned layout and the coverage of the microlens array (MLA). Among them, the protruding parts are micro-lens groups composed of lenses of various specifications and sizes, and are dynamically adjusted according to the light source characteristics (it can also be other shaped lenses).

[0101] The controlled dynamic dimming algorithm is as Figure 5 shown, including: dividing the input image into regions to obtain multiple image blocks; analyzing the brightness and color distribution of each image block, and calculating the corresponding brightness and color adjustment parameters; dynamically adjusting the brightness and color output of the corresponding light source zones according to the brightness and color adjustment parameters; among them, the brightness adjustment parameters include a high-light enhancement coefficient, an average brightness compensation coefficient, and a gamma value, and the color adjustment parameters include a color gamut conversion parameter and a color compensation parameter.

[0102] On the other hand, the present invention also proposes a projection method based on zoned light sources, as Figure 6As shown in the figure, the method includes: Step S101 is to adjust the brightness parameters and color parameters of each sub-light source in the light source according to the brightness and color distribution of the input image. The light source is provided with multiple partitions, and each partition is provided with a sub-light source; Step S102 is to filter out photons in the light source that do not meet the predetermined morphological requirements; Step S103 is to process the effective light-emitting part of the sub-light source to obtain a target light source.

[0103] According to a specific implementation manner, filtering out photons in the integrated light source that do not meet the predetermined morphological requirements includes: consuming and converting photons in the integrated light source that do not meet the predetermined morphological requirements into heat energy.

[0104] This projection method first obtains the image data to be projected; then performs regional division and analysis on the image data to obtain the brightness and color distribution information of each image block; calculates the corresponding brightness and color adjustment parameters according to the brightness and color distribution information; dynamically adjusts the brightness and color output of each partition in the partitioned light source module through a control unit; projects the modulated light through an optical path system onto a projection surface to achieve a high dynamic range (HDR) display effect.

[0105] By adopting technologies such as a gradient curvature microlens array, a vertical carbon nanotube coating, a dynamic dimming algorithm, and a three-stage heat dissipation structure, the present invention solves problems such as uneven brightness, insufficient contrast, and heat management bottlenecks existing in traditional projection technologies. The present invention has high luminous efficiency, high dynamic range, low scattering rate, and excellent heat management performance, and can be widely applied to fields such as home theaters, digital projection, and stage lighting, significantly improving the projection image quality and user experience.

[0106] A projection device based on a partitioned light source of the present invention includes: at least one light source, the light source is provided with multiple partitions, and each partition is provided with a sub-light source; a controller for adjusting the brightness parameters and color parameters of each sub-light source in the light source according to the brightness and color distribution of the input image; an optical path processor, the optical path processor is provided with a photon energy elimination layer for filtering out photons in the light source that do not meet the predetermined morphological requirements, and the optical path processor is used to process the effective light-emitting part of the sub-light source to obtain a target light source for projection. The present invention combines a partitioned light source with a dynamic image algorithm to achieve precise adjustment and full-color control of local light sources, and uses a photon energy elimination layer to eliminate photon interference, reducing the loss and scattering of light during the projection process, making the projection image more colorful and having a higher contrast.

[0107] On the other hand, an embodiment of the present invention provides a storage medium, on which a program is stored, and when the program is executed by a processor, it implements the projection method based on a partitioned light source.

[0108] An embodiment of the present invention provides a processor for running a program, wherein when the program runs, it executes the projection method based on partitioned light sources.

[0109] An embodiment of the present invention provides a device. The device includes a processor, a memory, and a program stored on the memory and executable on the processor. When the processor executes the program, the following steps are implemented: at least one light source having a plurality of partitions, each partition being provided with a sub-light source; a controller for adjusting the brightness parameters and color parameters of each sub-light source in the light source according to the brightness and color distribution of the input image; an optical path processor having a photon energy elimination layer for filtering photons in the light source that do not meet the predetermined morphological requirements, and the optical path processor is used to process the effective light-emitting part of the sub-light source to obtain a target light source for projection. The device herein can be a server, a PC, a PAD, a mobile phone, etc.

[0110] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product 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 code.

[0111] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in Figure 1 one or more of the flows Figure 1 or blocks or multiple flows and / or blocks Figure 1 one or more of the flows Figure 1 or blocks or multiple blocks.

[0112] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 steps of the functions specified in one block or multiple blocks. In a typical configuration, a computing device includes one or more processors (CPUs), an input / output interface, a network interface, and a memory.

[0113] The memory may include non-permanent memory in the form of computer-readable media, random access memory (RAM) and / or non-volatile memory such as read-only memory (ROM) or flash memory (flash RAM). The memory is an example of computer-readable media. Computer-readable media includes permanent and non-permanent, removable and non-removable media and can be implemented by any method or technology for information storage. The information can be computer-readable instructions, data structures, program modules, 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 technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette tapes, 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. As defined herein, computer-readable media does not include transitory media such as modulated data signals and carrier waves.

[0114] It should also be noted that the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, commodity or device including the element.

[0115] The above are only embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A projection device based on a partitioned light source, characterized in that, The projection device includes: At least one light source, the light source is provided with a plurality of partitions, and each partition is provided with a sub-light source; A controller for adjusting the brightness parameters and color parameters of each sub-light source in the light source according to the brightness and color distribution of the input image; An optical path processor, the optical path processor is provided with a photon energy elimination layer for filtering photons in the light source that do not meet the predetermined morphological requirements, and the optical path processor is used to process the effective light-emitting part of the sub-light source to obtain a target light source for projection; The optical path processor includes a light cutter, a light beam shaper and an optical path channel, and the light cutter, the light beam shaper and the optical path channel can be used in a cross-over and superposition manner; The light cutter is used to control the irradiation range of light and correct the photon propagation direction; The light beam shaper is used to change the parallel ratio before and after the parallel light of the light source is incident, constrain light sources of different areas into light sources of a specified area, and control the range of the light source energy; The photon energy elimination layer is at least provided on the inner wall of one of the light cutter, the light beam shaper and the optical path channel; The photon energy elimination layer is a carbon nanotube arrangement coating for consuming and converting photons in the light source that do not meet the predetermined morphological requirements into heat energy.

2. The projection device according to claim 1, wherein The type of the sub-light source is at least one of an RGB light source, a W light source, an R light source, a G light source and a B light source; The sub-light source is provided with a lens array.

3. The projection device according to claim 1, wherein The density range of the carbon nanotube alignment coating is at least 1.0× ~1.5× roots / cm².

4. The projection device according to claim 1, wherein Adjusting the brightness parameters and color parameters of each sub-light source in the light source according to the brightness and color distribution of the input image includes: Dividing the input image into a plurality of image blocks; Determining the adjustment parameters of the brightness and color according to the brightness and color distribution of the image block; Adjusting the brightness parameters and color parameters of each sub-light source in the light source according to the adjustment parameters; The brightness parameters include: a highlight enhancement coefficient, an average brightness compensation coefficient and a gamma value; The color parameters include: a gamut conversion parameter and a color compensation parameter.

5. The projection device according to claim 1 or 4, wherein The color value of the light source includes: The driving of the sub-light source is: Wherein: is the maximum color value of the light source, and R, G, and B are the color values of red, green, and blue respectively, is the average color value of the light source, For driving the sub-light source, is the maximum color value of the input image, is the average color value of the input image, α is the highlight enhancement coefficient, β is the average brightness compensation coefficient, and γ is the gamma value.

6. The projection device according to claim 1, wherein The optical path processor is used to process the effective light-emitting part of the sub-light source to obtain a target light source, including: The optical path processor includes a collimator for integrally collimating the effective light-emitting part of the sub-light source, and the effective light-emitting part meets the color value satisfaction threshold requirement; The collimator is an asymmetric free-form surface collimator.

7. The projection device according to claim 1, characterized in that, The projection device further includes a heat dissipation system, The heat dissipation system includes an aluminum nitride ceramic substrate, a vacuum chamber heat pipe and microchannel liquid cooling for dissipating heat of the projection device.

8. The projection device according to claim 1, wherein A plurality of sub-light sources and the input image satisfy time frame synchronization based on a time code or an image frame.

9. A projection method based on a partitioned light source, characterized in that, The method includes: Adjusting the brightness parameters and color parameters of each sub-light source in the light source according to the brightness and color distribution of the input image, the light source is provided with a plurality of partitions, and each partition is provided with a sub-light source; Filter photons in the light source that do not meet the predetermined morphological requirements through a photon energy elimination layer disposed at least in an inner wall of one of the beam chopper, the beam concentrator, and the optical path channel, where the photon energy elimination layer is a carbon nanotube array coating for consuming and converting photons in the light source that do not meet the predetermined morphological requirements into heat energy; Process the effective light-emitting part of the sub-light source to obtain a target light source.

10. A machine-readable storage medium having instructions stored thereon, characterized in that, When executed by a processor, this instruction causes the processor to be configured to execute the projection method based on a partitioned light source described in claim 9.

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