269 results about "Holographic display" patented technology

The invention discloses a multi-dimensional holographic image real-time rendering method and system based on dynamic light field modulation, and relates to the technical field of holographic display, the method is applied to terminal equipment and a server, the terminal equipment determines a space coordinate range based on quantum dot super-structure surface characteristics by obtaining related parameters of a target holographic scene, and the real-time rendering of a holographic image is realized. A quantum dot excitation sequence is generated to regulate and control the micro-nano structure of the super-structure surface, a joint coding model is constructed, a target light field modulation instruction set is generated through optimization, corresponding multi-dimensional light field data is requested from a server, and a holographic scene is generated through processing, fusion and rendering; the server receives the request, calls original holographic data, constructs a coding model and a compression model, and sends multi-dimensional light field data subjected to entropy compression to the terminal through a multi-channel transmission protocol; according to the method, efficient real-time rendering of the multi-dimensional holographic image is achieved, the rendering efficiency and quality are improved, and the method is suitable for scenes with high requirements for real-time performance of the holographic image.

The invention discloses a design method for a metasurface non-staggered polarization multiplexing holographic display device, and the method comprises the steps: carrying out the phase analysis of an initial polarization detection signal according to a phase recovery algorithm, and obtaining phase analysis information; receiving an incident polarized light signal and an emergent polarized light signal to construct emergent light complex amplitude, and combining phase analysis information to obtain analysis parameters corresponding to all positions in the metasurface device; constructing corresponding structure-phase delay mapping according to scanning information obtained by scanning, and further performing matching mapping on the analysis parameters to obtain corresponding mapping information; according to the mapping information, microstructure geometric parameters of all positions in the metasurface device are restored, and metasurface device design information is obtained. According to the design method, the holographic display device capable of carrying out independent phase regulation and control on any three polarization states can be designed, and the limitation that a non-staggered metasurface can only aim at orthogonal polarization state regulation and control is broken through; moreover, high-spatial-resolution display imaging can be realized, and the imaging field angle is larger.

The invention belongs to the technical field of micro-nano photoelectrons, and particularly relates to a multi-channel switchable holographic metasurface encryption device and method. The holographic metasurface encryption device is an array formed by nanoscale structure units through two-dimensional periodic continuation, and is called as a phase change dynamic holographic metasurface. Wherein the structural unit is formed by sequentially overlapping a phase change material layer and a metal material layer on a substrate; rectangular holes are formed in the central parts of the phase change material layer and the metal material layer; holographic encryption is realized by utilizing the adjusting capability of the phase change material unit, a plurality of independent holographic image channels are expanded by utilizing the independence of left and right polarization of circularly polarized light, and the switching function of the metasurface holographic display channel is realized through the phase change degree of the phase change material. The phase-change material is introduced into metasurface holographic display, switching of different responses to incident light is achieved through thermal modulation or electric pulse modulation, and therefore different encryption degrees are achieved. The device has a wide application prospect in the fields of optical display, optical calculation and the like.

The invention discloses an AI-based household condition gridding six-dimensional element holographic display system and method, and relates to the technical field of gridding social governance information, and the system comprises a data aggregation module which integrates data across departments and carries out cleaning processing; the data modeling module is used for constructing a space-time model based on a GIS (Geographic Information System) and integrating a multi-source map, and automatically generating and realizing dynamic division of various types of grids for social governance based on the multi-source map; the social governance module is used for collecting data through an AR mobile terminal, processing the data through a clustering algorithm and arranging events according to priorities; the user condition grid module is used for dividing grids, associating six-dimensional data and dynamically associating with workers at all levels; the six-dimensional element module is used for carrying out multi-dimensional statistics on six elements; the holographic display module is used for realizing grid drilling and information visualization; and the intelligent AI module analyzes the data and generates early warning. According to the invention, intelligent analysis and dynamic display of grid information are realized through AI and holographic technologies, and an AI intelligent scheme and an efficient digital scheme are provided for social governance.

The invention discloses a light-emitting super-structure surface capable of realizing incoherent fluorescence holography and multi-dimensional super-structure display and a preparation method thereof. The light-emitting super-structure surface is mainly composed of an optical waveguide structure layer, a micro-nano structure layer and a fluorescence emission layer. The optical waveguide structure layer comprises a substrate and a waveguide layer and is responsible for guiding fluorescence propagation; the micro-nano structure layer is located above the waveguide layer, is composed of nano bricks and can regulate and control light; the fluorescence emission layer is arranged above the micro-nano structure layer, contains quantum dots and is excited by the pump light to emit fluorescence. The metasurface can regulate and control the emergent angle, wavefront and emergent intensity of fluorescent light and pump light, the time-space coherence of the fluorescent light is enhanced through the waveguide layer, and phase modulation is carried out by using a method based on a circuitous phase. Based on the super-structure surface, through the steps of fluorescence excitation, coherence enhancement, phase modulation, diffraction calculation, hologram generation, multi-dimensional display and the like, incoherent fluorescence hologram and multi-dimensional super-structure display can be achieved, and the functions of fluorescence nanometer printing and multi-channel holographic display are covered.

Aspects of the disclosure include a method for controlling a vehicle via a holographic interface. Aspects include detecting a request, by an occupant of the vehicle, to display a holographic user interface and instructing a holographic display device to display the holographic user interface. Aspects also include detecting an interaction between the occupant and the holographic user interface, identifying a desired action for the vehicle based on the interaction, and instructing the vehicle to perform the desired action.

Provided in the present application are an intelligent interaction system and method based on a holographic display device. The system comprises a cloud server, a user terminal and a holographic display device, wherein on the basis of the current contextual information of an application program, a contextual situation event generation module in the user terminal generates a first target contextual situation event associated with a user; a contextual situation event recognition module in the cloud server generates an associated first holographic animation type on the basis of the first target contextual situation event, and sends to the holographic display device a first digital-object-driven message carrying the first holographic animation type; and a holographic animation driver module in the holographic display device parses the first digital-object-driven message, constructs first animation sequence data on the basis of the first holographic animation type, and drives a digital object associated with the user to perform holographic image display. The present application can improve the intelligence and personalization of holographic animation interaction behaviors between a user terminal and a holographic display device, thereby enhancing the usage experience of users.

The invention discloses a dynamic holographic VCSEL chip based on current addressing mode multiplexing, a design method, a dynamic holographic display system and application. According to the current addressing mode multiplexing-based dynamic holographic VCSEL chip implementation method, a multi-mode VCSEL is combined with a current addressing mode multiplexing optical digital hologram, so that an ultra-compact holographic system and an ultra-high switching frame rate are realized. A holographic image is coded using an orthogonal OAM state, and a dominant OAM mode component with a maximum weight coefficient is selected to minimize channel crosstalk. The hologram is directly integrated on the surface of the VCSEL through a 3D laser nanometer printing technology to form a chip comprising a hologram array. And dynamic holographic display is realized by changing the injection current. The method fully considers the crosstalk between addressable current mode multiplexing, remarkably reduces the crosstalk in the optical multiplexing holographic technology through a systematic mode selection process, and improves the quality and efficiency of holographic display and information processing.

The invention discloses a light field display method and system with holography as a representation medium, and the method comprises the following steps: S1, collecting a multi-view image of a target scene, carrying out the coding of the multi-view image, and generating a light field tensor containing space and angle information; s2, mapping the light field tensor in the step S1 into a two-dimensional space phase diagram; s3, converting the two-dimensional space phase diagram in the step S2 into a modulation diagram used for driving a spatial light modulator; and S4, driving the spatial light modulator to perform light wavefront modulation according to the modulation graph in the step S3, and reproducing the image of the target scene through optical diffraction. According to the invention, integration from dynamic scene information acquisition to high-quality three-dimensional image reproduction is realized, a low-redundancy and high-fidelity processing link is realized, and the efficiency and quality of holographic display are greatly improved.

The invention discloses a metasurface dynamic color holographic display method and system, and relates to the technical field of photoelectric display, and the system obtains image and depth data, observation angle and attitude parameters, external illumination parameters and target display area structural feature data in a display device manufacturing process in real time; preprocessing the collected data, fusing illumination parameters to generate a multispectral phase response matrix, and forming a visual angle depth coding map through visual angle and depth joint coding; a dynamic model is trained in combination with an image sequence and environmental parameters, light field distribution prediction and coding instruction output are realized, and the reconstruction quality of a color dynamic holographic image is improved; the color fidelity, the dynamic response performance and the three-dimensional reconstruction accuracy coefficient are calculated and compared with the preset threshold values, real-time evaluation and strategy adjustment of color rendition, the dynamic performance and the three-dimensional effect in the display device manufacturing process are achieved, and the product quality and the display effect of display device manufacturing are effectively guaranteed.

The invention discloses a preparation method of a perovskite photoresist nano composite material and a laser direct writing method. The preparation method comprises the following steps: forming a two-photon photoresist substrate; a CsPbBr precursor solution is formed; and fusing the CsPbBr precursor solution and the two-photon photoresist substrate to form the two-photon photoresist nano composite material doped with the CsPbBr precursor. The perovskite photoresist nano composite material formed by the method can reach hundred-nanometer-level processing precision, and the minimum line width can reach 100 nm. Meanwhile, the preparation method disclosed by the invention is simple and low in cost, and a display device prepared from the perovskite photoresist nano composite material disclosed by the invention has excellent performance and can be applied to the fields of information storage, holographic display and the like.

The invention discloses a digital twin video holographic display method and system based on a real geographic space, and the method comprises the steps: reading a real-time image frame at a current moment from real-time video data, and obtaining a real-time image frame according to the visibility and shielding relation between the real-time image frame and a three-dimensional live-action model; the method comprises the following steps: dividing an image texture of a real-time image frame into a texture mapping overlapping region and a non-overlapping region, for the texture mapping overlapping region, combining a plurality of historical image frames as a texture source, and adopting a multi-source texture fusion algorithm based on real geographic space consistency to reconstruct a texture map of the texture mapping overlapping region; dynamically mapping the texture map to the surface of the three-dimensional live-action model to obtain video-model data after texture mapping; and transmitting video-model data into a holographic display system, and displaying a holographic image according to the position difference of the eyes of the observer in the space. According to the invention, accurate space fusion is carried out on the three-dimensional real scene model and the real-time video data, and real, real-time and spatially synchronized three-dimensional holographic presentation of a physical scene is realized.

A method, apparatus, and computer-readable medium for sensor-based application deployment with holographic output, including executing a sensor analysis application configured to interface with one or more hardware sensors at the local deployment site and generate result data based at least in part on data captured by the one or more hardware sensors, transmitting holographic display instructions to a holographic display device at the local deployment site, the holographic display instructions being determined based at least in part on one or more of the sensor data or the result data, and transmitting the result data to a remote server over the computer network, wherein the remote server is configured to identify one or more communications channels and transmit one or more alerts over the one or more communications channels based at least in part on the received result data.

The invention provides an interactive three-dimensional holographic display method for a smart farm, and relates to the technical field of smart agriculture and holographic visualization. Comprising the following steps: firstly, performing multi-angle aerial photography in different growth stages of a rice field through an unmanned aerial vehicle to collect image data; processing the data by using a three-dimensional reconstruction algorithm, and constructing a three-dimensional model library of the rice field; on the basis, a voice interaction module is integrated to a visual platform, so that a user can select and switch models and inquire growth information through voice control; further converting the selected three-dimensional model data into structured data suitable for holographic reconstruction, and generating a high-fidelity digital hologram by applying a complex-valued convolutional neural network point cloud gridding algorithm; and finally, performing optical reconstruction on the hologram by driving holographic display equipment. According to the method, the limitation of a traditional two-dimensional image in space and time sequence expression is overcome, dynamic visualization of the rice field growth process is achieved, and the monitoring and decision-making effects are improved.

The invention discloses a pure phase hologram coding method based on an unsupervised learning neural network, and belongs to the technical field of information optics, and the method comprises the steps: obtaining and preprocessing an original target image, taking the intensity of the original target image as the amplitude, and constructing a complex amplitude matrix through combining with an initial phase; randomly selecting parameters from the wavelength training table and the propagation distance training table, and propagating the complex amplitude matrix by adopting an angular spectrum diffraction algorithm to generate a complex amplitude hologram; inputting the hologram into a POH-Net deep neural network model, extracting features and mapping the features into a pure phase hologram; and according to the pure phase hologram, reconstructing an image by using reverse angular spectrum propagation, and optimizing network parameters by using an Adam optimizer by taking the loss between the amplitude of the image and the amplitude of the original target as a loss function until convergence. The method supports rapid pure phase hologram generation in complex scenes of multiple wavelengths, multiple distances and the like, and provides effective technical support for practical application of holographic display and a high-performance CGH system.

The invention relates to the technical field of marketing systems, in particular to an AI-based holographic marketing system and a thinking expression use method, comprising a holographic display module used for generating a three-dimensional holographic image according to a preset model and realizing dynamic immersive display in a specified space; the data acquisition module is used for acquiring physiological and behavior data of a user in real time through sensors such as an integrated electroencephalogram interface, an eye movement tracker and a facial expression capturing camera; the AI marketing engine module is used for carrying out multi-modal fusion and emotion and intention recognition on the collected data, and the multi-modal physiological behavior data such as electroencephalogram signals, eye movement data and facial expressions are collected, preprocessed and fused in real time, so that the emotion state and the thinking intention of a user can be accurately recognized, and the user experience is improved. And the personalized marketing strategy is dynamically generated in combination with the context information, so that immersive, intelligent and emotion-driven holographic marketing display is realized, and the pertinence and interactivity of the marketing effect are improved while the user experience is remarkably improved.

The invention discloses a three-dimensional vector holographic display device based on a medium metasurface and a display method. The three-dimensional vector holographic display device comprises a substrate and a nano structure unit on the substrate, the nano-structure units are arranged on the substrate according to specific phase distribution to form a nano-structure unit array; when light waves enter the three-dimensional vector holographic display device, the light waves are modulated by the nanostructure units, transmitted light waves are emitted through a plurality of independent space channels, adjustable patterns of different polarization states can be generated on a plurality of planes in a combined mode, and three-dimensional vector display is achieved. According to the invention, longitudinal regulation and control of amplitude, phase and polarization of light waves can be realized in a broadband range, super-surface display is expanded to a three-dimensional vector form from a two-dimensional scalar form, and the method can be applied to the fields of high-capacity optical storage, optical information encryption, quantum optical technology and the like.

The application discloses a substation maintenance system determination method, system, electronic equipment and storage medium. The method comprises the following steps: determining the power engineering information model corresponding to the current substation according to the environment information of the environment to which the current substation belongs; determining the device model information base corresponding to the current substation according to each power device, the power device identifier and the device association information of the corresponding power device located in the environment; determining the holographic display and operation and maintenance detection system for displaying the current substation and each power device located in the current substation; and determining the maintenance system applied to the substation based on the power engineering information model, the device model information base and the holographic display and operation and maintenance detection system, so as to simulate the maintenance of the power device based on the maintenance system. Based on the above technical scheme, the problem that the existing scheme cannot simulate the maintenance scheme when the power device is maintained and repaired, thereby causing high maintenance cost, long time and poor efficiency is solved.

An optical assembly is provided for use in holographic display of a replay image. The optical assembly may be of particular use is an augmented reality headset. The optical assembly includes a light-modulation element arranged to be illuminated off-axis by a light beam. The light-modulation element modulates the incident light to generate a replay image and generates a zero-order light beam. A focusing system is arranged after the light-modulation element. A light remover is positioned after the focussing system and is configured to remove the zero-order light beam from the light focussed by the focussing system. The focussing system is configured to focus zero-order light from the light-modulation element in a first plane different from a second plane which is the plane of focus of parallel light of the replay image. The light remover removes the zero-order light in the first plane.

The application provides an orbital angular momentum and wavelength dual multiplexing polarization sensitive zooming super lens based on an orbital angular momentum and wavelength dual multiplexing polarization sensitive zooming super lens, characterized in that the super lens is composed of a silicon dioxide substrate layer and a silicon elliptical nanometer column medium layer. Through an orbital angular momentum topological charge number orthogonality and wavelength selectivity dual multiplexing mechanism, combined with a polarization sensitive design, a geometric phase regulation mechanism, the silicon elliptical nanometer column array is optimized through size and rotation angle, 0-2pi full phase coverage is realized, different orbital angular momentum modes, different wavelengths and left-handed / right-handed circularly polarized incident light are precisely demultiplexed in a 400-700nm visible light band, multi-channel independent zooming can be realized, and the focusing efficiency is greater than or equal to 65%. The application solves the defects of single zooming function, limited channel capacity and poor polarization compatibility of the traditional super lens, has compact structure and high integration, and can be widely applied to the fields of miniature imaging systems, optical communication, holographic display and the like.

This application relates to a holographic display device comprising a backlight unit and a spatial light modulator, wherein the backlight unit is used to emit light. The spatial light modulator includes a plurality of pixels and a color filter layer comprising a plurality of color filter groups. The pixels are arranged in a zigzag pattern and configured to modulate at least one of the amplitude and phase of the light. Each of the color filter groups includes a first subgroup, a second subgroup, and a third subgroup, the first subgroup including a plurality of first color filters, the second subgroup including a plurality of second color filters, and the third subgroup including a plurality of third color filters, and each pixel is aligned with one of the first, second, and third color filters of the color filter layer.

The application relates to a polarization holographic multiplexing display system and method based on an acousto-optic modulator, wherein a beam splitter is arranged in front of a spatial light modulator; a laser, a first linear polarizer and the beam splitter are sequentially arranged on an optical path of the laser; a first lens, a pinhole, a second lens and a first polarization grating are sequentially arranged on a reflection optical path of the beam splitter; four circularly polarized lights are arranged behind the first polarization grating; a reflecting mirror, an acousto-optic modulator, a third lens and an image sensor are sequentially arranged on an optical path of a first light beam; a second polarization grating, a second linear polarizer and an image sensor are sequentially arranged on optical paths of a second light beam, a third light beam and a fourth light beam. The application can obtain three kinds of reconstructed images with different effects at different reconstruction distances, and has a good application prospect in the fields of holographic display, holographic storage and the like.

Systems and methods of virtual reality or augmented reality (VR / AR) visualization of 3D medical images using a VR / AR visualization system are disclosed. The VR / AR visualization system includes a computing device operably coupled to a VR / AR device, and the VR / AR device includes a holographic display and at least one sensor. The holographic display is configured to display a holographic image to an operator. The computing device is configured to receive at least one stored 3D image of an anatomical structure of a subject and at least one real-time 3D position of at least one surgical instrument. The computing device is further configured to register the at least one real-time 3D position of the at least one surgical instrument to correspond to the at least one 3D image of the anatomical structure of the subject, and generate the holographic image including the at least one real-time position of the at least one surgical instrument overlaid on the at least one 3D image of the anatomical structure of the subject.

The invention discloses a laser decoherence and holographic display speckle noise suppression system and method based on controllable fog scattering. The system comprises a laser light source module, an optical shaping module, a fog scattering module and a holographic display module which are arranged in sequence. The fog scattering module generates a scattering medium layer composed of micron-sized fog drops in an ultrasonic atomization or airflow disturbance mode, so that the space and time coherence of the collimated laser is reduced under the action of multiple times of scattering, and therefore speckle noise in holographic display imaging is effectively restrained. By adjusting the particle size distribution, the concentration and the disturbance frequency of the fog drops, continuous controllability of the decoherence intensity can be achieved, and the imaging brightness and the imaging definition are both considered. The system is simple in structure and high in compatibility, and can be directly embedded into an existing computer-generated holographic display system without an additional optical modulation device; and meanwhile, the method has the advantages of low cost, high real-time performance, suitability for a multiband laser system and the like, and is suitable for the optical fields of holographic display, laser projection, interference measurement and the like.

The invention discloses a full-space switchable nanoimprint and holographic display method based on a metasurface, and belongs to the field of micro-nano optics and holographic display. According to the metasurface-based full-space switchable nanoimprint and holographic display method, the metasurface used for achieving full-space switchable nanoimprint and holographic display is composed of nano antennas of different geometric dimensions, and the geometric dimensions and the arrangement mode of the metasurface are determined through an amplitude constrained phase holographic optimization algorithm; the amplitude distribution of the light field passing through the metasurface is restrained into binary image distribution in a real space, and holographic reconstruction is carried out in a wave vector k space. According to the sensitivity of the metasurface to the wavelength of incident light, three different optical modulation modes are realized under three wavelengths; the wavelength sensitivity of the metasurface is utilized to modulate a reflected light beam and a transmitted light beam under different incident light wavelengths, so that full-space switchable nanoimprint and holographic display are realized, and the metasurface can be applied to the fields of optical nanoimprint, counterfeiting prevention, optical switches, optical communication, display and the like.

A holographic media display device with an exterior, including multiple light-emitting displays that each configured to output images, at least one semi-transparent reflector, each reflector configured to receive images from at least one of the displays, to create a hologram display proximate the reflector, control electronics configured to store image media and transmit the image media to the light-emitting displays, and exterior user controls.

A system for training a machine learning algorithm to generate a plurality of ideal hologram phase correction maps includes a holographic head-up display (HUD) configured to display a plurality of duplicates of a graphic based on a hologram phase map. The system further includes a camera system configured to view each of the plurality of duplicates of the graphic. The system further includes a controller in electrical communication with the holographic HUD and the camera system. The controller is programmed to determine a plurality of ground-truth hologram phase correction maps using a genetic algorithm, the holographic HUD, and the camera system. The controller is further programmed to generate a training dataset including a plurality of images of the graphic and train the machine learning algorithm to generate the plurality of ideal hologram phase correction maps.

Three-dimensional reconfigurable vector holographic double-layer cascade super device, design method and equipment belong to the field of holographic technology, solve the problem that reconfiguration of incident wave front often involves changing light source or polarizer operation, which is not only inconvenient but also cannot realize fast switching. The device includes: a hybrid cascade of radiative super surface and birefringent super surface, the intensity and polarization response of hologram in three-dimensional space is reconfigurable and highly customized. The rotatable radiative super surface can be used as an incident wave front modulator to excite the non-rotatable birefringent super surface. By introducing a gradient descent optimization inverse design method, numerical analysis and experimental verification of three-dimensional reconfigurable vector holography are demonstrated in the microwave region. The present application is suitable for integrated encryption devices and holographic display super devices.

A holographic display includes a light source configured to emit incoherent light, a spatial light modulator (SLM) disposed at a Fourier plane of the light source and configured to modulate the incoherent light and emit the modulated incoherent light as diffused light, and at least one lens disposed downstream of the spatial light modulator and configured to focus the modulated incoherent light, and the spatial light modulator receives an RGB-D image signal and converts the incoherent light array incident from the light source into a first light, which is a coherently-reconstructed incoherent sum (CRIS) for implementing a 3D hologram.

This application discloses a holographic capsule and a holographic gashapon machine. The holographic capsule includes a lid, a holographic display screen, a display space chamber, a light guide assembly, a control assembly, and a capsule body. The lid, holographic display screen, display space chamber, and capsule body are sequentially and fixedly connected. The display space chamber, light guide assembly, and control assembly are all located inside the capsule body. The holographic display screen is positioned between the lid and the front of the display space chamber, while the light guide assembly and control assembly are located on the back of the display space chamber. The control assembly controls the light guide assembly and the holographic display screen based on the gashapon information from the gashapon machine, displaying a holographic image corresponding to the gashapon information on the holographic display screen. In this application, when staff replace gashapon capsules, compared to replacing physical displays, only the gashapon information of the gashapon machine needs to be adjusted to obtain the corresponding holographic image based on the holographic capsule of this application. Therefore, it can effectively reduce labor costs and improve replacement efficiency.