Full-parallax free three-dimensional display system

Abstract

The invention provides a full-parallax free three-dimensional display system which comprises a display source, an optical collimation module, a refraction module and a diffusion structure, wherein thedisplay source comprises multiple pixel points; the optical collimation module comprises a plurality of optical collimation units; the refraction module comprises a plurality of refraction units; themultiple pixel points, the plurality of optical collimation units and the plurality of refraction units are arranged in a one-to-one correspondence manner; light collimation structures of the opticalcollimation units are positive focal power lens structures having curvatures in the horizontal direction and the vertical direction; the display source is arranged on a focal plane of the light collimation structures; the refraction units are optical structures which have deflection effects on light rays in the horizontal direction and the vertical direction and which do not change beam convergence and divergence properties; the diffusion structure is an optical structure having diffusion effects on the light rays in the horizontal direction and vertical direction. The light rays emitted by the display source are processed by the collimation module, the refraction module and the diffusion structure so as to realize free three-dimensional display, and the full-parallax free three-dimensional display system is high in imaging resolution, large in view angle, small in aberration influence and excellent in viewing experience.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of three-dimensional display, and more specifically, relate to a full parallax autostereoscopic display system. Background technique [0002] With the rapid development of science and technology, more and more fields such as medical imaging, military command, government emergency dispatch, and communication media are no longer satisfied with the 2D information provided by flat-panel display, and can achieve full parallax, high-definition, and large viewing angles. Realistically reproduced 3D displays have become a sought-after goal. [0003] Integrated imaging display technology is the most well-known light field display technology. This technology is different from the holographic display technology. The integrated imaging uses the modulation effect of the lens array to display the 2D display, and can easily realize the 3D effect with true color. Integrated imaging 3D display technol...

AI Technical Summary

Problems solved by technology

[0006] (1) Insufficient resolution: In traditional integrated imaging technology, the resolution of 3D images depends on the pitch of lens elements. In order to increase the resolution, it is necessary to reduce the pitch of lens elements

Display-based integrated imaging 3D displays require higher-resolution displays to compensate for the impact of fine-pitch lens elements, but higher-resolution 2D displays are currently difficult to obtain

[0007] (2) Insufficient viewing angle: the expression of lens focal length f is: where r is the radius of curvature

According to the principle of lens light control and triangular geometric relationship, it can be concluded that the viewing of the current integrated imaging technology 3D stereoscopic display system under ideal conditions is regarded as: For the current autostereoscopic display, since the lens intercept p is less than or equal to twice the radius of curvature, the refractive index n is generally set to 1.5. According to the above two formulas, the value range of θ is θ≤52°, that is, the stereoscopic viewing angle is small

[0008] (3) The impact of aberration is great: in the integrated imaging technology, the lens array is used to modulate the light. When the lens array modulates the light, the aberration phenomenon will be generated by the lens itself, which will introduce the crosstalk between the viewpoints, that is, the light that should enter a certain The light from one eye enters the other eye, which will cause double image phenomenon and blurred image, which will reduce the quality of three-dimensional display

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