A 3D display method for realizing large viewing area and small viewing distance

Abstract

The invention discloses a three-dimensional display method for realizing a large viewing area and a small viewing point distance. Using the difference in optical characteristics between the outgoing lights of any two adjacent sub-screens in the display screen, multiple aperture arrays that can be switched in time sequence are placed on the viewer. Before the pupil. Each aperture of any aperture array and its optical characteristics are in one-to-one correspondence with the optical characteristics of each sub-screen and its outgoing light, so that the light intensity of each aperture to the outgoing light of the corresponding sub-screen and the outgoing light of the adjacent sub-screen of the corresponding sub-screen The transmittance ratio is greater than 9; and the different apertures corresponding to the sub-screens in different aperture arrays are spatially adjacently arranged at a distance smaller than or equal to the pupil diameter. At one time point, only one of the aperture arrays is turned on, and each aperture array is turned on in turn at adjacent time points in a cycle. At each time point, each sub-screen synchronously loads view information with respect to its corresponding open aperture. When the switching period of each aperture array timing cycle is sufficiently small, 3D display with large viewing area and small viewing point spacing can be realized based on visual retention.

Description

technical field [0001] The present invention relates to three-dimensional display, and more particularly, to a three-dimensional display technology capable of realizing large viewing area and small viewing distance. Background technique [0002] Existing 3D displays are mainly based on stereoscopic technology. Stereoscopic technology realizes the presentation of three-dimensional depth by projecting only one view to the observer's binocular, and using the convergence of binocular vision in space. But in order to clearly see the corresponding views of the binoculars, the observer needs to focus his / her eyes on the display surface. Therefore, there is an inconsistency between the binocular convergence distance and the monocular focusing distance. When observing a real object naturally, the cone-shaped light beam from the real object point covers the observer's eyes. This cone-shaped beam naturally focuses the observer's eye on the object point. That is to say, when observi...

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Problems solved by technology

[0004] In order to overcome the problem existing in the prior art that the realization of three-dimensional display with large viewing area and small viewing point spacing needs to open more apertures correspondingly at more adjacent time points, resulting in excessively high requirements on the refresh frequency of the display screen, the present invention provides the following Program

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