A holographic display method and system based on a liquid crystal on silicon device

Abstract

The application discloses a holographic display method and system based on a silicon-based liquid crystal device, and the method comprises the following steps: obtaining a target light signal of incident light and a corresponding signal image by using the silicon-based liquid crystal device; obtaining hologram data based on the target light signal; determining a pixel voltage value of each pixel point in the signal image according to the hologram data; mapping the signal image to a viewing window diffraction area according to the pixel voltage value of each pixel point, and generating a holographic image corresponding to the target light signal according to the mapping result. By using the silicon-based liquid crystal device to output the projection light, the light utilization rate can be maximized by combining the silicon-based circuit and the liquid crystal, the light quality and the light stability of the output light are ensured, and the high definition and the high stability of the final holographic image are ensured, so that the visual effect and the experience of the user are improved.

Description

Technical Field

[0001] This invention relates to the field of signal processing technology, and in particular to a holographic display method and system based on silicon-based liquid crystal devices. Background Technology

[0002] Holographic projection technology (front-projected holographic display), also known as virtual imaging technology, is a technique that uses the principles of interference and diffraction to record and reproduce a true three-dimensional image of an object. Holographic projection technology can not only produce three-dimensional aerial illusions, but also allow these illusions to interact with performers, creating a stunning performance effect. It is applicable to product exhibitions, car and fashion shows, stage performances, interactive experiences, bar entertainment, and interactive projection in various venues. Current holographic projection methods use LED displays to project light, which is then subjected to optical interference and diffraction to generate holographic three-dimensional images. However, this method has the following problems: due to the material limitations of LED displays, the light utilization rate is low, resulting in lower clarity of the final holographic image, reducing visual appeal and user experience. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a holographic display method and system based on silicon-based liquid crystal devices to solve the problem mentioned in the background art where the projected light from LED displays suffers from low light utilization due to material issues, resulting in low clarity of the final holographic image, which reduces visual effects and user experience.

[0004] A holographic display method based on a silicon-based liquid crystal device includes the following steps:

[0005] Using a silicon-based liquid crystal device to acquire the target light signal of incident light and its corresponding signal image;

[0006] Holographic data is acquired based on the target optical signal;

[0007] The pixel voltage value of each pixel in the signal image is determined based on the hologram data.

[0008] The signal image is mapped onto the window diffraction region based on the pixel voltage value of each pixel, and a holographic image corresponding to the target light signal is generated based on the mapping result.

[0009] Preferably, the step of acquiring the target light signal of the incident light and its corresponding signal image using a silicon-based liquid crystal device includes:

[0010] A silicon-based liquid crystal device is used to collect incident white light emitted by a high-intensity light bulb and decompose it into red, green, and blue light.

[0011] Red, green, and blue light are filtered separately, and the processed colored light beams are then guided into the micro-devices of the silicon-based liquid crystal device to generate three sets of reflected light.

[0012] The three sets of reflected light rays are combined through a prism, and the target light signal corresponding to the combined light rays is collected.

[0013] The target light signal is projected onto a preset projection lens to obtain the signal image corresponding to the target light signal.

[0014] Preferably, before using a silicon-based liquid crystal device to collect the incident white light emitted by a high-intensity light bulb, the method further includes:

[0015] Acquire images of scattered light emitted by a high-intensity light bulb, and set multiple sampling points in the scattered light images;

[0016] The current light intensity at each sampling point is obtained based on the scattered light parameters emitted by the high-intensity bulb;

[0017] The effective light distribution area and stray light distribution area in the scattered light image are determined based on the current light intensity at each sampling point;

[0018] The effective light distribution area of ​​the high-intensity light bulb is used as the reference area for collecting incident light from the high-intensity light bulb.

[0019] Preferably, acquiring holographic data based on the target optical signal includes:

[0020] The optical wave data of the output light of the silicon-based liquid crystal device are obtained based on the target optical signal;

[0021] Ambient light data within the holographic projection area is collected, and interference fringe data between the ambient light data and the light wave data output by the silicon-based liquid crystal device is determined based on the principle of light interference.

[0022] The interference fringe data is converted into pattern data;

[0023] Holographic data of the output light of the silicon-based liquid crystal device is obtained based on the pattern data.

[0024] Preferably, determining the pixel voltage value of each pixel in the signal image based on the hologram data includes:

[0025] The phase-modulated optical interference signal of each pixel in the signal image is obtained based on the hologram data;

[0026] The current signal waveform and the initial signal waveform of the phase-modulated optical interference signal of each pixel are obtained, and the current signal waveform and the initial signal waveform are compared to obtain the comparison result.

[0027] The waveform change amplitude of each pixel is determined based on the comparison results;

[0028] The driving voltage value of each pixel is determined based on the waveform change amplitude of each pixel.

[0029] Preferably, before mapping the signal image to the window diffraction region based on the pixel voltage value of each pixel, and generating a holographic image corresponding to the target light signal based on the mapping result, the method further includes:

[0030] Obtain scene information of the holographic projection scene, and determine multiple eye visual regions based on the scene information;

[0031] The holographic image diffraction level of each eye visual region is evaluated based on preset light diffraction parameters. The first eye visual region whose holographic image diffraction level is within the preset level range is retained, and the second eye visual region is removed.

[0032] Obtain the window parameters for each first visual region of the eye, and determine the loading effect of the holographic projection image in each first visual region based on the window parameters;

[0033] Based on the loading effect, a suitable third visual region is selected in the first visual region, and all third visual regions are integrated to generate the window diffraction region.

[0034] Preferably, the step of mapping the signal image onto the window diffraction region based on the pixel voltage value of each pixel, and generating a holographic image corresponding to the target light signal based on the mapping result, includes:

[0035] Holographic encoded data of the signal image is generated based on the pixel voltage value of each pixel.

[0036] Based on the holographic encoded data, the display light signal of each pixel in the signal image is phase-modulated to obtain the modulation result;

[0037] A coherent beam is generated for each pixel based on the modulation result;

[0038] The signal image is mapped onto the window diffraction region based on the coherent beam of each pixel, the mapping result is obtained, and a holographic image corresponding to the target light signal is generated based on the mapping result.

[0039] Preferably, the method further includes:

[0040] Obtain the geographic location information of the holographic projection area, and set the standard holographic image display brightness of the holographic projection area at different seasons and different times based on the geographic location information and the area's sealing degree;

[0041] The ambient light within the holographic projection area is collected in real time for each time period, and the current holographic image display brightness within that event period is determined based on the ambient light in each time period.

[0042] Compare the current holographic image display brightness with the standard holographic image display brightness within each time period to determine the display brightness difference;

[0043] Based on the brightness difference, the brightness of the current holographic image is selectively and adaptively adjusted within each time period.

[0044] A holographic display system based on silicon-based liquid crystal devices, the system comprising:

[0045] The first acquisition module is used to acquire the target light signal of the incident light and its corresponding signal image using a silicon-based liquid crystal device;

[0046] The second acquisition module is used to acquire holographic data based on the target optical signal;

[0047] The first determining module is used to determine the pixel voltage value of each pixel in the signal image based on the hologram data;

[0048] The mapping module is used to map the signal image onto the window diffraction region based on the pixel voltage value of each pixel, and generate a holographic image corresponding to the target light signal based on the mapping result.

[0049] Preferably, the system further includes:

[0050] The setting module is used to obtain the geographical location information of the holographic projection area, and set the standard holographic image display brightness of the holographic projection area at different seasons and different times based on the geographical location information and the area's sealing degree.

[0051] The second determining module is used to collect ambient light in the holographic projection area in real time within each time period, and determine the current holographic image display brightness within the event period based on the ambient light in each time period;

[0052] The comparison module is used to compare the current holographic image display brightness with the standard holographic image display brightness within each time period to determine the difference in display brightness.

[0053] The adjustment module is used to selectively and adaptively adjust the current holographic image display brightness within each time period based on the display brightness difference.

[0054] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0055] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0056] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0057] Figure 1 A flowchart illustrating the workflow of a holographic display method based on a silicon-based liquid crystal device provided by the present invention;

[0058] Figure 2 Another flowchart of a holographic display method based on a silicon-based liquid crystal device provided by the present invention;

[0059] Figure 3 This is another flowchart illustrating a holographic display method based on a silicon-based liquid crystal device provided by the present invention.

[0060] Figure 4 This is a schematic diagram of the structure of a holographic display system based on a silicon-based liquid crystal device provided by the present invention. Detailed Implementation

[0061] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0062] Holographic projection technology (front-projected holographic display), also known as virtual imaging technology, is a technique that uses the principles of interference and diffraction to record and reproduce a true three-dimensional image of an object. Holographic projection technology can not only produce three-dimensional aerial illusions, but also allow these illusions to interact with performers, creating a stunning performance effect. It is applicable to product exhibitions, car and fashion shows, stage performances, interactive experiences, bar entertainment, and interactive projection in various venues. Existing holographic projection methods use LED displays to project light, which is then subjected to optical interference and diffraction to generate holographic three-dimensional images. However, this method suffers from the following problems: due to material limitations, the light utilization rate of LED displays is low, resulting in lower clarity of the final holographic image, reducing visual appeal and user experience. To address these issues, this embodiment discloses a holographic display method based on silicon-based liquid crystal devices.

[0063] A holographic display method based on silicon-based liquid crystal devices, such as Figure 1 As shown, it includes the following steps:

[0064] Step S101: Use a silicon-based liquid crystal device to acquire the target light signal of the incident light and its corresponding signal image;

[0065] Step S102: Obtain holographic data based on the target optical signal;

[0066] Step S103: Determine the pixel voltage value of each pixel in the signal image based on the hologram data;

[0067] Step S104: Map the signal image to the window diffraction region according to the pixel voltage value of each pixel, and generate a holographic image corresponding to the target light signal according to the mapping result.

[0068] In this embodiment, the incident light is represented as the emitted light from a high-intensity light bulb;

[0069] In this embodiment, the signal image is represented as the projected image corresponding to the target light signal;

[0070] In this embodiment, the holographic data is represented as the interference fringe data between the output light of the silicon-based liquid crystal device and the ambient light;

[0071] In this embodiment, the pixel voltage value represents the driving voltage value of each pixel during holographic display;

[0072] In this embodiment, the window diffraction region is represented as the projection window region of the holographic image;

[0073] In this embodiment, the mapping result is represented as the mapping result of the optical signal image in three-dimensional space.

[0074] The working principle of the above technical solution is as follows: using a silicon-based liquid crystal device to acquire the target light signal of the incident light and its corresponding signal image; acquiring holographic data based on the target light signal; determining the pixel voltage value of each pixel in the signal image according to the holographic data; mapping the signal image to the window diffraction region according to the pixel voltage value of each pixel; and generating a holographic image corresponding to the target light signal according to the mapping result.

[0075] The beneficial effects of the above technical solution are as follows: by using silicon-based liquid crystal devices to output projected light, the light utilization rate can be maximized by combining silicon-based circuits and liquid crystals, ensuring the light quality and stability of the output light, and also ensuring the high definition and high stability of the final holographic image. This improves the user's visual effect and experience, and solves the problem in the prior art where the projected light of LED displays has low light utilization due to material issues, resulting in low definition of the final holographic image and reduced visual effect and user experience.

[0076] In this embodiment, after generating the holographic image corresponding to the target light signal, the method further includes:

[0077] Obtain the hologram array corresponding to the holographic image, and determine the holographic mixed pixel data corresponding to the holographic image based on the hologram array;

[0078] Extract the target data of each pixel from the holographic mixed pixel data and obtain the reflection parameters of each pixel based on it;

[0079] The holographic reflection characteristics of each pixel are determined based on the reflection parameters of each pixel, and the holographic reflection characteristics include: total reflection characteristics and retroreflection characteristics;

[0080] The projection spectral data of the holographic image is determined based on the holographic reflection characteristics of each pixel;

[0081] The quality characteristic factors of the holographic image projection result are determined based on the projection spectral data, and the optical projection parameters of the holographic image projection result are determined based on the quality characteristic factors.

[0082] Feature extraction is performed on the optical projection parameters. Based on the extracted features, it is determined whether the holographic image projection result meets the projection requirements. If it does, the holographic image is confirmed to be qualified; otherwise, the holographic image is confirmed to be unqualified.

[0083] Spectral correction is performed on the projected spectral data based on the projection modal parameters of the holographic image;

[0084] The processed holographic image is generated based on the corrected projection spectral data;

[0085] The processed holographic image is then projected.

[0086] In this embodiment, the hologram array is represented as a pixel distribution map array of the holographic image of the holographic image;

[0087] In this embodiment, holographic mixed pixel data is represented as a mixture of standard pixel data and noise pixel data in the holographic image;

[0088] In this embodiment, the reflection parameter represents the light reflection parameter of each pixel when a holographic image is projected;

[0089] In this embodiment, the projected spectral data is represented as the mapped spectral data of the holographic image during projection;

[0090] In this embodiment, the quality feature factor is represented as a quality-related descriptive factor of the projection result of the holographic image;

[0091] In this embodiment, the optical projection parameter is represented as the display parameter of the projection result of the holographic image.

[0092] The beneficial effects of the above technical solution are as follows: by judging the holographic image for its qualification, it is possible to accurately evaluate whether the generated holographic image meets the projection standard and thus optimize it, ensuring the reliability and stability of the image projection.

[0093] In one embodiment, such as Figure 2 As shown, the method of acquiring the target light signal of incident light and its corresponding signal image using a silicon-based liquid crystal device includes:

[0094] Step S201: Use a silicon-based liquid crystal device to collect the incident white light emitted by a high-intensity light bulb and decompose it into red light, green light and blue light;

[0095] Step S202: Filter the red light, green light and blue light respectively, and guide the processed colored light beams into the micro-device of the silicon-based liquid crystal device to generate three sets of reflected light.

[0096] Step S203: Combine the three sets of reflected light rays through a prism and collect the target light signal corresponding to the combined light rays;

[0097] Step S204: Project the target light signal onto a preset projection lens to obtain the signal image corresponding to the target light signal.

[0098] In this embodiment, the filtering process refers to the process of filtering out other colors of light besides the original color from red light, green light, and blue light, respectively.

[0099] In this embodiment, the microdevice includes: a printed circuit board, a silicon transistor, a reflective coating, a liquid crystal layer, an alignment layer, and a transparent electrode.

[0100] The beneficial effects of the above technical solution are as follows: by generating three sets of reflected light rays and then combining them into a single set of combined light rays, the light utilization rate can be maximized, ensuring the stability of the light signal and the clarity of the signal image, laying the foundation for subsequent holographic projection work and improving practicality.

[0101] In one embodiment, such as Figure 3 As shown, before using a silicon-based liquid crystal device to collect the incident white light emitted by a high-intensity light bulb, the process also includes:

[0102] Step S301: Acquire an image of the scattered light emitted by a high-intensity light bulb, and set multiple sampling points in the scattered light image;

[0103] Step S302: Obtain the current light intensity at each sampling point based on the scattered light parameters emitted by the high-intensity bulb;

[0104] Step S303: Determine the effective light distribution area and stray light distribution area in the scattered light image based on the current light intensity at each sampling point;

[0105] Step S304: Use the effective light distribution area of ​​the high-intensity bulb as the reference area for collecting incident light from the high-intensity bulb.

[0106] In this embodiment, the scattered light image is represented as the scattered light image of a high-intensity light bulb within a preset diffusion range;

[0107] In this embodiment, the sampling points are set at equal intervals;

[0108] In this embodiment, the scattered light parameters are represented as the illumination parameters and scattering parameters of the scattered light emitted by the high-intensity bulb;

[0109] In this embodiment, the effective light distribution area is represented as the light distribution area with acquisition reference value;

[0110] In this embodiment, the stray light distribution area is represented as the light distribution area that does not have a collection reference function;

[0111] In this embodiment, the incident light acquisition reference area is defined as the area for acquiring incident light from a high-intensity bulb.

[0112] The beneficial effects of the above technical solution are as follows: by determining the effective light distribution area and stray light distribution area in the scattered light image, the light acquisition range can be effectively determined, interference caused by stray light can be avoided, and the stability and reliability of light acquisition can be improved.

[0113] In one embodiment, acquiring holographic data based on the target optical signal includes:

[0114] The optical wave data of the output light of the silicon-based liquid crystal device are obtained based on the target optical signal;

[0115] Ambient light data within the holographic projection area is collected, and interference fringe data between the ambient light data and the light wave data output by the silicon-based liquid crystal device is determined based on the principle of light interference.

[0116] The interference fringe data is converted into pattern data;

[0117] Holographic data of the output light of the silicon-based liquid crystal device is obtained based on the pattern data.

[0118] The beneficial effects of the above technical solution are as follows: by acquiring interference fringe data and converting it into pattern data, the holographic display data of the output light of the silicon-based liquid crystal device can be quickly and accurately determined, thus laying the foundation for subsequent pixel voltage value limitation and ensuring the stability of the holographic display.

[0119] In one embodiment, determining the pixel voltage value of each pixel in the signal image based on the hologram data includes:

[0120] The phase-modulated optical interference signal of each pixel in the signal image is obtained based on the hologram data;

[0121] The current signal waveform and the initial signal waveform of the phase-modulated optical interference signal of each pixel are obtained, and the current signal waveform and the initial signal waveform are compared to obtain the comparison result.

[0122] The waveform change amplitude of each pixel is determined based on the comparison results;

[0123] The driving voltage value of each pixel is determined based on the waveform change amplitude of each pixel.

[0124] In this embodiment, the phase-modulated optical interference signal represents the adjusted phase optical signal for each pixel;

[0125] In this embodiment, the current signal waveform represents the reflected signal waveform of the adjusted phase light signal for each pixel;

[0126] In this embodiment, the initial signal waveform represents the incident signal waveform of the phase-adjusted light signal for each pixel;

[0127] In this embodiment, the waveform variation amplitude is determined by the amplitude and frequency variation of the phase light signal at each pixel.

[0128] In this embodiment, the driving voltage value represents the voltage applied by the silicon-based circuitry to each pixel during holographic display.

[0129] The beneficial effects of the above technical solution are as follows: by determining the driving voltage value of each pixel based on the waveform change amplitude of each pixel, the difference signal attributes of each pixel in two-dimensional and three-dimensional display can be determined intuitively and stably, thereby setting a precise driving voltage value for each pixel. This can ensure the stability and reliability of each pixel in holographic display and further improve its practicality.

[0130] In one embodiment, before mapping the signal image to the window diffraction region based on the pixel voltage value of each pixel, and generating a holographic image corresponding to the target light signal based on the mapping result, the method further includes:

[0131] Obtain scene information of the holographic projection scene, and determine multiple eye visual regions based on the scene information;

[0132] The holographic image diffraction level of each eye visual region is evaluated based on preset light diffraction parameters. The first eye visual region whose holographic image diffraction level is within the preset level range is retained, and the second eye visual region is removed.

[0133] Obtain the window parameters for each first visual region of the eye, and determine the loading effect of the holographic projection image in each first visual region based on the window parameters;

[0134] Based on the loading effect, a suitable third visual region is selected in the first visual region, and all third visual regions are integrated to generate the window diffraction region.

[0135] In this embodiment, scene information is represented as the horizon information and spatial information of the holographic projection scene;

[0136] In this embodiment, the eye visual area refers to the visual statistical area that the human eye can see without having to twist the head up and down significantly;

[0137] In this embodiment, the preset light diffraction parameters are expressed as parameters such as the diffraction range and diffraction brightness of light in space;

[0138] In this embodiment, the holographic image diffraction level is represented as the diffraction visual effect level of the holographic image within each eye visual region;

[0139] In this embodiment, the preset level range can be 3-5 levels;

[0140] In this embodiment, the window parameter represents the optimal sharpness window range parameter for each first eye visual region;

[0141] In this embodiment, selecting a suitable third visual region in the first visual region based on the loading effect includes: using a third visual region with a loading effect greater than or equal to a preset effect as the suitable region.

[0142] The beneficial effects of the above technical solution are: it can ensure the maximum display effect of holographic images, reduce visual effect errors caused by the impact on the user's eyesight, and at the same time improve the display clarity of holographic images, further improving stability and reliability.

[0143] In one embodiment, mapping the signal image to the window diffraction region based on the pixel voltage value of each pixel, and generating a holographic image corresponding to the target light signal based on the mapping result, includes:

[0144] Holographic encoded data of the signal image is generated based on the pixel voltage value of each pixel.

[0145] Based on the holographic encoded data, the display light signal of each pixel in the signal image is phase-modulated to obtain the modulation result;

[0146] A coherent beam is generated for each pixel based on the modulation result;

[0147] The signal image is mapped onto the window diffraction region based on the coherent beam of each pixel, the mapping result is obtained, and a holographic image corresponding to the target light signal is generated based on the mapping result.

[0148] The beneficial effects of the above technical solution are as follows: by generating holographic encoded data, optical signal modulation can be performed on each pixel quickly and stably, which improves the modulation efficiency. Furthermore, by generating coherent beams for signal-image mapping, the stability of the mapping can be guaranteed, and the phase modulation of each pixel can be checked and verified, which further ensures working efficiency and stability.

[0149] In one embodiment, the method further includes:

[0150] Obtain the geographic location information of the holographic projection area, and set the standard holographic image display brightness of the holographic projection area at different seasons and different times based on the geographic location information and the area's sealing degree;

[0151] The ambient light within the holographic projection area is collected in real time for each time period, and the current holographic image display brightness within that event period is determined based on the ambient light in each time period.

[0152] Compare the current holographic image display brightness with the standard holographic image display brightness within each time period to determine the display brightness difference;

[0153] Based on the brightness difference, the brightness of the current holographic image is selectively and adaptively adjusted within each time period.

[0154] In this embodiment, the geographic location information is represented as the latitude and longitude information of the holographic projection area;

[0155] In this embodiment, the area sealing degree is represented by the spatial sealing and light transmittance of the holographic projection area;

[0156] In this embodiment, the standard holographic image display brightness table of the holographic projection area at different seasons and different times is the different standard holographic image display brightness of the holographic projection area at each time point in each season. For example, the display brightness at 6 pm in summer and the display brightness at 6 pm in winter will be significantly different due to the different ambient light.

[0157] In this embodiment, selectively adjusting the current holographic image display brightness in each time period based on the display brightness difference includes: if the difference is within a preset range, no adjustment is required; if the difference is outside the preset range, the current holographic image display brightness in each time period is adjusted to the standard holographic image display brightness in that time period.

[0158] The beneficial effects of the above technical solution are: the display brightness of the holographic image can be adaptively adjusted according to the changes in season and time of day, further ensuring the visual effect, while maximizing compatibility and improving the user experience and scene adaptability.

[0159] In one embodiment, the method further includes:

[0160] The texture and structural features of the holographic image are obtained, and the texture information covariance matrix and structural information covariance matrix of the holographic image are constructed based on the two respectively.

[0161] The visual impact coefficient of holographic images on human eyes was evaluated by combining the visual characteristics of the human eye and the display characteristics of holographic images;

[0162] The current display brightness and ambient brightness of the holographic image are detected. Based on the current display brightness and ambient brightness of the holographic image, as well as the visual impact coefficient of the holographic image on the human eye, and the texture information covariance matrix and structure information covariance matrix of the holographic image, the visual perception coefficient of the holographic image in the current projection environment is calculated.

[0163]

[0164] Where Q represents the visual perception coefficient of the holographic image in the current projection environment, μ represents the projection modality description index of the holographic image, α represents the visual influence coefficient of the holographic image on the human eye, θ represents the sealing degree of the current projection environment, β represents the projection intensity of the holographic image, B represents the texture information covariance matrix of the holographic image, K represents the structural information covariance matrix of the holographic image, ln represents the natural logarithm, and δ represents the sharpness of the holographic image.

[0165] The system determines whether a holographic image is suitable for projection in the current projection environment based on its visual perception coefficient. If not, it issues a warning instruction.

[0166] In this embodiment, the visual perception coefficient of the holographic image in the current projection environment is expressed as the visual comfort index of the projection result of the holographic image in the current projection environment for the human eye.

[0167] In this embodiment, the projection modality description index is represented as the complexity description index of the projection modality corresponding to the holographic image.

[0168] The beneficial effects of the above technical solution are as follows: by calculating the visual perception coefficient of the holographic image in the current projection environment, the compatibility between the two can be comprehensively evaluated based on the projection parameters of the holographic image and the environmental parameters of the projection environment, and then appropriate reminder instructions can be issued, which ensures the projection effect of the image and further improves practicality and user experience.

[0169] This embodiment also discloses a holographic display system based on silicon-based liquid crystal devices, such as... Figure 4 As shown, the system includes:

[0170] The first acquisition module 401 is used to acquire the target light signal of the incident light and its corresponding signal image using a silicon-based liquid crystal device;

[0171] The second acquisition module 402 is used to acquire holographic data based on the target optical signal;

[0172] The first determining module 403 is used to determine the pixel voltage value of each pixel in the signal image based on the hologram data;

[0173] The mapping module 404 is used to map the signal image to the window diffraction region according to the pixel voltage value of each pixel, and generate a holographic image corresponding to the target light signal according to the mapping result.

[0174] The working principle of the above technical solution is as follows: First, the first acquisition module uses a silicon-based liquid crystal device to acquire the target light signal of the incident light and its corresponding signal image; second, the second acquisition module is used to acquire holographic data based on the target light signal; then, the first determination module determines the pixel voltage value of each pixel in the signal image according to the holographic data; finally, the mapping module maps the signal image to the window diffraction region according to the pixel voltage value of each pixel, and generates a holographic image corresponding to the target light signal according to the mapping result.

[0175] The beneficial effects of the above technical solution are as follows: By utilizing silicon-based liquid crystal devices to output projected light, the light utilization rate can be maximized through the combination of silicon-based circuits and liquid crystals, ensuring the quality and stability of the output light. This also guarantees the high definition and stability of the final holographic image, improving the user's visual experience and overall enjoyment.

[0176] In one embodiment, the system further includes:

[0177] The setting module is used to obtain the geographical location information of the holographic projection area, and set the standard holographic image display brightness of the holographic projection area at different seasons and different times based on the geographical location information and the area's sealing degree.

[0178] The second determining module is used to collect ambient light in the holographic projection area in real time within each time period, and determine the current holographic image display brightness within the event period based on the ambient light in each time period;

[0179] The comparison module is used to compare the current holographic image display brightness with the standard holographic image display brightness within each time period to determine the difference in display brightness.

[0180] The adjustment module is used to selectively and adaptively adjust the current holographic image display brightness within each time period based on the display brightness difference.

[0181] The beneficial effects of the above technical solution are: the display brightness of the holographic image can be adaptively adjusted according to the changes in season and time of day, further ensuring the visual effect, while maximizing compatibility and improving the user experience and scene adaptability.

[0182] Those skilled in the art should understand that the "first" and "second" in this invention simply refer to different application stages.

[0183] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0184] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A method of holographic display based on a liquid crystal on silicon device, characterized in that, The method comprises the following steps: acquiring a target light signal of incident light and a corresponding signal image by using a liquid crystal on silicon device; acquiring hologram data based on the target light signal; determining a pixel voltage value of each pixel point in the signal image according to the hologram data; mapping the signal image to a viewing window diffraction region according to the pixel voltage value of each pixel point, and generating a holographic image corresponding to the target light signal according to a mapping result; the determination of the pixel voltage value of each pixel point in the signal image according to the hologram data comprises: acquiring a phase modulation light interference signal of each pixel point in the signal image according to the hologram data; acquiring a current signal waveform and an initial signal waveform of the phase modulation light interference signal of each pixel point, comparing the current signal waveform with the initial signal waveform, and acquiring a comparison result; determining a waveform variation amplitude of each pixel point according to the comparison result; determining a driving voltage value of each pixel point according to the waveform variation amplitude of each pixel point; the mapping of the signal image to the viewing window diffraction region according to the pixel voltage value of each pixel point, and the generation of the holographic image corresponding to the target light signal according to the mapping result, comprise: generating holographic encoding data of the signal image according to the pixel voltage value of each pixel point; phase modulating a display light signal of each pixel point in the signal image according to the holographic encoding data, and acquiring a modulation result; generating a coherent light beam of each pixel point according to the modulation result; mapping the signal image into the viewing window diffraction region based on the coherent light beam of each pixel point, acquiring the mapping result, and generating the holographic image corresponding to the target light signal according to the mapping result.

2. The method of claim 1, wherein the liquid crystal device is a liquid crystal on silicon device. the acquisition of the target light signal of incident light and the corresponding signal image by using the liquid crystal on silicon device comprises: collecting incident white light emitted by a high-intensity bulb by using the liquid crystal on silicon device and decomposing the white light into red light, green light and blue light; respectively filtering the red light, the green light and the blue light, and guiding the processed color light beams into a micro device of the liquid crystal on silicon device to generate three groups of reflected light rays; combining the three groups of reflected light rays through a prism, and collecting a target light signal corresponding to the combined light rays; projecting the target light signal into a preset projection lens to acquire a signal image corresponding to the target light signal.

3. The method of claim 2, wherein the liquid crystal layer is a liquid crystal layer of a liquid crystal on silicon device. Before the collection of the incident white light emitted by the high-intensity bulb by using the liquid crystal on silicon device, the method further comprises: collecting a scattered light image emitted by the high-intensity bulb, and setting a plurality of sampling points in the scattered light image; acquiring a current light intensity of each sampling point according to a scattered light parameter emitted by the high-intensity bulb; determining an effective light distribution region and a stray light distribution region in the scattered light image according to the current light intensity of each sampling point; taking the effective light distribution region of the high-intensity bulb as a reference region for the collection of incident light of the high-intensity bulb.

4. The method of claim 1, wherein the liquid crystal device is a liquid crystal on silicon device. the acquisition of the hologram data based on the target light signal comprises: acquiring light wave data of output light of the liquid crystal on silicon device according to the target light signal; collecting ambient light data in a holographic projection region, and determining interference fringe data between the ambient light data and the light wave data of the output light of the liquid crystal on silicon device based on a light interference principle; converting the interference fringe data into pattern data; According to the pattern data, hologram data of output light of the liquid crystal on silicon device is acquired.

5. The method of claim 1, wherein the liquid crystal device is a liquid crystal on silicon device. Before mapping the signal image to the window diffraction region according to the pixel voltage value of each pixel point and generating the holographic image corresponding to the target light signal according to the mapping result, the method further comprises: acquiring scene information of the holographic projection scene, and determining a plurality of eye visual regions according to the scene information; evaluating a holographic image diffraction level of each eye visual region according to the preset light diffraction parameters, retaining a first eye visual region with the holographic image diffraction level within a preset level interval, and excluding a second eye visual region; acquiring a window parameter of each first eye visual region, and determining a loading effect of the holographic projection image in each first visual region according to the window parameter; selecting an adaptive third eye visual region in the first eye visual region according to the loading effect, and integrating all third eye visual regions to generate the window diffraction region.

6. The method of claim 1, wherein the liquid crystal device is a liquid crystal on silicon device. The method further comprises: acquiring geographical position information of the holographic projection region, and setting a standard holographic image display brightness of the holographic projection region at different seasons and different time points according to the geographical position information and the region sealing degree; real-time collecting ambient light in each time period in the holographic projection region, and determining a current holographic image display brightness in the time period according to the ambient light in the time period; comparing the current holographic image display brightness in each time period with the standard holographic image display brightness to determine a display brightness difference value; selectively adaptively adjusting the current holographic image display brightness in each time period based on the display brightness difference value.

7. A holographic display system based on a liquid crystal on silicon device, characterized in that The system comprises: a first acquisition module configured to acquire a target light signal of incident light and a corresponding signal image by using a liquid crystal on silicon device; a second acquisition module configured to acquire hologram data based on the target light signal; a first determination module configured to determine a pixel voltage value of each pixel point in the signal image according to the hologram data; a mapping module configured to map the signal image to a window diffraction region according to the pixel voltage value of each pixel point, and generate a holographic image corresponding to the target light signal according to a mapping result; the determination of the pixel voltage value of each pixel point in the signal image according to the hologram data comprises: acquiring a phase modulation light interference signal of each pixel point in the signal image according to the hologram data; acquiring a current signal waveform and an initial signal waveform of the phase modulation light interference signal of each pixel point, comparing the current signal waveform with the initial signal waveform to obtain a comparison result; determining a waveform change amplitude of each pixel point according to the comparison result; determining a driving voltage value of each pixel point according to the waveform change amplitude of the pixel point; the mapping of the signal image to the window diffraction region according to the pixel voltage value of each pixel point and the generation of the holographic image corresponding to the target light signal according to the mapping result comprise: generating holographic encoding data of the signal image according to the pixel voltage value of each pixel point; phase modulating a display light signal of each pixel point in the signal image according to the holographic encoding data to obtain a modulation result; generating a coherent light beam of each pixel point according to the modulation result; The signal image is mapped into the window diffraction region based on a coherent light beam of each pixel point, a mapping result is obtained, and a holographic image corresponding to a target light signal is generated according to the mapping result.

8. The holographic display system based on liquid crystal on silicon device according to claim 7, wherein, The system further comprises: A setting module is configured to acquire geographical position information of the holographic projection region, set standard holographic image display brightness of the holographic projection region at different seasons and different time points according to the geographical position information and regional sealing degree, and set a standard holographic image display brightness of the holographic projection region at different seasons and different time points according to the geographical position information and regional sealing degree. A second determination module is configured to collect ambient light in each time period in the holographic projection region in real time, and determine current holographic image display brightness in each time period according to the ambient light in the time period. A comparison module is configured to compare the current holographic image display brightness in each time period with the standard holographic image display brightness, and determine a display brightness difference value. An adjustment module is configured to selectively and adaptively adjust the current holographic image display brightness in each time period based on the display brightness difference value.

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