Research Of Autostereoscopic Three-Dimensional(3D) Display Key Technologies Based On High Resolution And Dense Viewpoint

Autotereoscopic three-dimensional display,also known as naked eye three-dimensional(3D)display,is a new generation of display technology.Viewers can see 3D image information without wearing any assistive devices,creating an immersive atmosphere and achieving a more impact visual experience.With the continuous development of 5G communication technology,network technology,multimedia technology,human-computer interaction technology and game entertainment industry,the imaging technology with naked eye 3D display as the carrier is attracting more and more attention.Based on 3D display view more intense and resolution not loss as the research target,based on the geometrical optics design and space optical modulation design,on the principle of numerical simulation and experimental validation methods,focusing on dynamic grating based on the concept of"eye space"and the screen control dense viewpoint,non-destructive new resolution open hole 3D display system design and prototype test,verify the parallax type flat display technology of 3D information can be part of the reconstruction image.The optical field 3D display of different application scenes adopts different technical routes,and the overall design and technical optimization of the optical field 3D display scheme of suspended sand table and vehicle-mounted display system are carried out.In the aspect of holographic 3D display,a holographic wavefront light-modulated superlens device model based on surface plasmon is proposed,and its structure design and performance are simulated by software.This paper strives to effectively improve and solve the existing problems of naked eye 3D display technology,such as resolution loss and insufficient utilization rate of spatial viewpoints,and provides theoretical guidance and technical support for them.The main research work and innovation points of this paper include:1.Theoretical model construction of new naked eye 3D display technology.Focusing on the two basic requirements of how to improve the resolution of naked eye 3D display and how to increase the number of viewpoints,a new design idea of naked eye 3D display is proposed.Aiming at the limitation of viewing position and number of people in current naked eye 3D display technology,the concept of"eye space"was introduced to establish a dense geometric optical physical model of view point,and the intensity distribution of"eye space"was simulated and calculated.In order to solve the problem of resolution loss,a liquid crystal grating screen is invented,and the circuit design of grating addressing drive matrix is proposed.Through the establishment of mathematical model and simulation calculation,the feasibility of the scheme is discussed in principle,and the theoretical guidance for the subsequent experimental verification is provided.2.Construction of a dynamic raster naked eye 3D display system and analysis of experimental results.The experimental design based on"eye space"and dynamic raster screen is completed.The influence of diffraction effect on the experiment was analyzed,the crosstalk degree of left and right eye view was reduced,and the brightness uniformity of image display was balanced.According to the difference of display mode and scanning mode,both source processing and dynamic raster spatiotemporal multiplexing are taken into account,and control signal extraction and raster pupil addressing circuit design are used to achieve the optimization of view angle and depth of field.The new design concept overcomes the limitations of current naked eye 3D display technologies:viewing position,number of people,as well as brightness,depth of field,resolution and bandwidth.3.General design of optical field naked eye 3D display application scene plan.In addition to the parallax dynamic grating optical field 3D plane display system,this paper also optimizes the optical field 3D display scheme of suspended sand table and vehicle mounted system.This scheme can further improve the resolution of 3D display,increase the number of viewpoints in the surround direction,and present the suspension 3D effect.The vehicle-mounted multimedia display system projects the 3D image of light field into the three-dimensional space through the virtual tensor display technology,and combines the selective sub-pixel mapping technology to improve the resolution of the display system and provide the motion parallax of different positions in the vehicle-mounted space.4.Surface plasma superlens based on holographic naked eye 3D display.Optical excitation of SPP resonance on metal or graphene surface in a specific wavelength range was used to generate evanescent waves on the contact surface of materials and media,and phase compensation was achieved by adjusting material dispersion and structural dispersion,so as to eliminate chromatic aberration focusing.By using extraordinary optical transmission(EOT)and changing the effective refractive index of the substrate medium,the active far-field superfocusing is realized.This kind of superlens based on surface plasma has positive significance in the super resolution imaging of holographic 3D display.