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Holography-based great-visual angle three-dimensional image display method and system

A 3D image and display system technology, applied in stereoscopic systems, image communication, optics, etc., can solve problems such as limited viewing angles of 3D images, and achieve the effects of simplifying mathematical model processing, improving efficiency, and high storage capacity

Inactive Publication Date: 2010-09-01
SUN YAT SEN UNIV
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Problems solved by technology

[0005] Aiming at the limited viewing angle of the three-dimensional image generated by the diffraction of the light modulation device, the purpose of the present invention is to propose a large viewing angle three-dimensional image display method and system based on the holographic method based on the volume holographic storage technology

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Embodiment

[0039] In order to obtain computational holographic three-dimensional images of different viewing azimuths, the present invention designs a non-coaxial three-lens optical system. Such as figure 1 As shown, the three-lens optical path 10 includes: a coaxial first lens 11 and a third lens 13, and its optical axis is used as the system optical axis; the second lens 12 can be displaced perpendicular to the system optical axis, and the second lens 12 Carried on the displacement platform 14; the spatial light modulator (SLM) 20 inputs the calculated holographic code through the third lens 13 to display a three-dimensional image near the second lens 12; the second lens 12 and the object plane are in the conjugate object image of the first lens 11 noodle. The beam emitted by the single-frequency polarized laser 40 is supposed to emit parallel beams from the reflective spatial light modulator 20, and converge to a point on the object surface through a three-lens system. When the seco...

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Abstract

The invention discloses a holography-based great-visual angle three-dimensional image display method and a holography-based great-visual angle three-dimensional image display system. In the method and the system, a non-coaxial three-lens light path is disclosed and designed, and in combination with computer generated holography, small-visual angle three-dimensional images of target images in different observation azimuth angles are generated through the variations of lens positions in the three-lens light path; and based on volume holographic storage technology, the small-visual angle three-dimensional images in the different observation azimuth angles are stored into a volume recording medium with the same reference light to realize the display of great-visual angle three-dimensional images. When a three-lens-non-coaxial optical system is adopted to perform computer generated holographic encoding, the small-visual angle three-dimensional images in the different observation azimuth angles have a common sampling lattice, which can simplify the mathematical model processing of the target images and improve the efficiency of a computer generated holographic algorithm; and the storage and display of a plurality of great-visual angle three-dimensional images can be further realized through the variations of incident angles of the reference light by adopting volume holography and making full use of the characteristic of the high storage capacity of the volume holography, which is favorable for the practicability of three-dimensional image display technology.

Description

technical field [0001] The invention relates to the technical field of three-dimensional image display, and specifically discloses a large viewing angle three-dimensional image display method and system based on computational holography and holographic storage technology. 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 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 th...

Claims

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Application Information

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IPC IPC(8): G03H1/22G02B27/26H04N13/00G02B30/25
CPCG03H1/268G03H2001/2695
Inventor 滕东东王彪曾万祺郭靖
Owner SUN YAT SEN UNIV
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