Front projection self-stereoscopy three-dimensional display device based on cylindrical grating

Abstract

The invention discloses a front projection self-stereoscopy three-dimensional display device based on a cylindrical grating screen, which comprises the cylindrical grating screen, a longitudinal scattering screen and a projector which are sequentially placed. The cylindrical surface of the cylindrical grating screen faces to the projector and is coated with a reflection film, the longitudinal scattering screen clings to the cylindrical grating screen, the projector projects a three-dimensional image formed by combining perspective projection images of a three-dimensional object with a plurality of visual angles to the cylindrical grating screen, and projection beams which form each perspective projection image are respectively reflected to a corresponding viewpoint to form multi-viewpoint self-stereoscopy three-dimensional display. The invention adopts a front projection system to construct a three-dimensional display, can be used for a three-dimensional cinema needing a large scene and a large picture three-dimensional image and can be watched by naked eyes.

Description

technical field [0001] The invention relates to a three-dimensional display device, in particular to a front projection self-viewing three-dimensional display device based on a cylindrical grating screen. Background technique [0002] The difference between three-dimensional display and two-dimensional display is to bring visual depth perception to the viewer through various methods, so that it can naturally or unnaturally obtain the third-dimensional information in the picture. For the viewer, there is a difference between true three-dimensional and false three-dimensional (or quasi-three-dimensional). The development of 3D display technology has produced a large number of achievements today, which can be roughly divided into holographic 3D display, volumetric 3D display, and stereoscopic 3D display. Holographic technology can produce very realistic spatial effects, but it requires high-resolution spatial light modulators and ultra-high-speed data processing systems in ter...

AI Technical Summary

Problems solved by technology

Holographic technology can produce very realistic spatial effects, but it requires high-resolution spatial light modulators and ultra-high-speed data processing systems in terms of dynamic display. These two factors greatly limit the progress of this technology, making it Not yet well into practical applications

Both volumetric 3D display and stereoscopic 3D display have relatively good display devices. However, most of the display devices based on these two methods rely on rotating screens to meet the requirements of viewing from all angles, so the structure of the display device is relatively complicated and the cost is relatively expensive.

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