Projection optics engine for true three-dimensional solid-state volume type stereo display system

Abstract

A projection optics engine for true three-dimensional solid-state volume type stereo display system is provided with a projection light source, a color wheel with two stages of red, green and blue disk separately, a squared rod, a relay system, a light modulator DMD, a projection lens and a folding light path in sequence on an optical path; the projection light source may be LED or ultra-high pressure Hg bulb (UHP or SHP); the luminous ray emitted by the projection light source forms red, green and blue homogeneous light after permeating the color wheel, each homogeneous light forms a luminous spot on the emergence end of the squared rod after dividing light evenly; the luminous spot is irradiated on the light modulator DMD through the relay system, and is then emitted by the projection lens, the emergence luminous ray of the projection lens is imaged on a liquid crystal light valve with a dispersion state in a display body through the folding light path. The invention not only ensures display performance, also reduces cost, system structural complexity as well as display system volume.

Description

technical field [0001] The invention relates to an optical engine, in particular to a projection optical engine which can be used in a true three-dimensional solid-state volumetric display system. Background technique [0002] The true three-dimensional solid-state volumetric display is to project the three-dimensional object information on the display body of the corresponding depth through the high-speed projection optical engine according to the depth of each point on the display information surface, so as to complete the true three-dimensional space display of the object, mainly by Composition of image processing module, projection optical engine and display body, such as figure 1 shown. Among them, the display body is composed of multiple layers of high-transmittance liquid crystal light valves, and each light valve works in a scattering or transmission state by applying different voltages. Under the irradiation of visible light, the light valve in the scattering stat...

AI Technical Summary

Problems solved by technology

At present, the existing projection optical engine using a single-chip DMD structure cannot meet the requirements of true three-dimensional solid-state volumetric display in terms of brightness and refresh rate. At the same time, it cannot solve the contradiction between large enough imaging area and small enough volume.

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