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Time-sharing multiplexing computational holographic three-dimensional display system and display method thereof

A computational holographic and three-dimensional display technology, applied to stereoscopic systems, instruments, electrical components, etc., can solve problems such as disadvantages and affect image display quality, and achieve the effect of reducing complexity

Inactive Publication Date: 2013-04-24
SUN YAT SEN UNIV
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Problems solved by technology

If time-division multiplexing is used, the high-order diffraction item corresponding to one incident beam will be superimposed on the zero-order diffraction item corresponding to other incident beams, which seriously affects the display quality of the image, which is not conducive to the practical application of this method

Method used

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  • Time-sharing multiplexing computational holographic three-dimensional display system and display method thereof
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  • Time-sharing multiplexing computational holographic three-dimensional display system and display method thereof

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Embodiment Construction

[0036] In order to solve the problems existing in the prior art, we design a polarizing aperture stop to eliminate the influence of superimposed noise of high-order diffraction terms. Light path structure such as Figure 4 shown.

[0037] The invention discloses a time-division multiplexing computational holographic three-dimensional display system based on polarization aperture filtering, which includes: 4f system 20, polarization aperture stop 40, spatial light modulator 10 and a control unit;

[0038] Wherein, the 4f system 20 is composed of a first lens and a second lens, and the two optical elements are coaxial;

[0039] Polarizing aperture stop 40, the aperture is composed of two parallel orthogonal polarizers, which are located on the spectral plane determined by the first lens of the above-mentioned spatial light modulator;

[0040] The spatial light modulator 10 inputs and calculates the holographic code, and displays the spectral distribution of the input two-dimen...

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Abstract

The invention relates to a time-sharing multiplexing computational holographic three-dimensional display system and a display method thereof. The system comprises a 4f system, a spatial light modulator, a polarizing aperture diaphragm and a control unit, wherein the 4f system comprises a first lens and a second lens; the spatial light modulator is used for inputting and computing holographic codes and displaying the spectral distribution of the inputted codes on the corresponding spectral plane of the spatial light modulator through the conversion of the first lens; the aperture of the polarizing aperture diaphragm comprises two parallel orthogonal polaroids and is positioned on the spectral plane of the spatial light modulator, which is determined by the first lens; and the control unit is used for controlling the incidence sequence and time of the incident light of the spatial light modulator. The optical information is filtered by the polarizing aperture diaphragm and then converted again by the second lens to reproduce the input information of the spatial light modulator on an image plane. The viewing angle of the three-dimensional image generated by the invention is approximately doubled. The invention can realize single-modulator diffraction display of binocularly visible three-dimensional images, lowers the complexity of the display system, and is favorable for the development of practical application of computational holographic three-dimensional display technology.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional image display, and relates to a time-division multiplexing computing holographic three-dimensional display system and a display method thereof. Background technique [0002] Because two-dimensional display is difficult to clearly and accurately express the depth information of the third dimension, people have been working on the research of display technology that can display three-dimensional scenes - three-dimensional image display technology. Holographic three-dimensional display technology uses light diffraction or interference to record the amplitude and phase information of object light, and then reconstructs the information of object light through light diffraction. It is the only true three-dimensional display technology among various display methods. [0003] Early optical holography needed to prepare a model of a three-dimensional object, and reflect the beam for coherent recor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03H1/22H04N13/00
Inventor 滕东东王彪
Owner SUN YAT SEN UNIV
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