Amplitude-type holographic printing method capable of adjusting longitudinal position of reconstructed three-dimensional scene

A technology for reconstructing three-dimensional and longitudinal positions, applied in the direction of instruments, etc., can solve the problems of spatial light modulator spatial bandwidth product limitation and the limitation of the longitudinal position of the reconstructed scene, etc., to achieve the effect of improving the overall efficiency

Pending Publication Date: 2018-11-02
TIANJIN POLYTECHNIC UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] (1) The spatial bandwidth product of the spatial light modulator is limited
[0007] (2)

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  • Amplitude-type holographic printing method capable of adjusting longitudinal position of reconstructed three-dimensional scene
  • Amplitude-type holographic printing method capable of adjusting longitudinal position of reconstructed three-dimensional scene
  • Amplitude-type holographic printing method capable of adjusting longitudinal position of reconstructed three-dimensional scene

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[0028] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance.

[0030] These and other aspects of the embodiments of the present invention will become clear with reference to the following description and drawings. In these descriptions and drawings, some specific implementations in the embodiments of the present invention are specifically disclosed to sh...

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Abstract

The invention discloses an amplitude-type holographic printing method capable of adjusting a longitudinal position of a reconstructed three-dimensional scene. The method comprises the steps of (S1) designing a three-dimensional scene by using 3D-aid software or generating point cloud data of objective things by using a laser scanner; (S2) sampling the three-dimensional scene or the point cloud data and generating amplitude-type holograms by using a point source method; (S3) loading the amplitude-type holograms by using a spatial light modulator, evaluating the definition and the spatial resolution of the reconstructed three-dimensional scene and selecting the hologram with the best reconstruction effect for printing; (S4) making the reconstructed three-dimensional scene reach the longitudinal position through changing a distance parameter in the point source method; and (S5) after printing is completed, reconstructing the three-dimensional scene by using reference light and evaluatingthe reconstruction effect. The amplitude-type holographic printing method belongs to an amplitude-type holographic printing technology, a practical application of calculating holographic three-dimensional display is improved, development and improvement of the holographic printing technology are facilitated and the amplitude-type holographic printing method has the advantages that the space-bandwidth product is increased and the longitudinal depth of the reconstructed three-dimensional scene is adjusted.

Description

technical field [0001] The invention relates to the field of holographic printing, in particular to an amplitude-type holographic printing method capable of adjusting the longitudinal position of a reconstructed three-dimensional scene. Background technique [0002] Three-dimensional display technology has broad application prospects in the fields of military defense, culture, education, medical care and health. 3D display technology provides depth perception of 3D scenes. The human visual system perceives the 3D world to the 2D projected image, and recognizes the 3D world from the 2D image. The natural depth of human perception is due to the slight difference in viewing the real world with the left and right eyes, and the brain fuses the two to obtain a three-dimensional feeling. Existing mature 3D display technologies such as binocular parallax display and volumetric 3D display cannot provide all the depth information required by human eyes to perceive 3D, and long viewin...

Claims

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Application Information

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IPC IPC(8): G03H1/04G03H1/08
CPCG03H1/0476G03H1/0866G03H2001/0883
Inventor 牛萍娟孙玉楷郭云雷高志刚刘雷
Owner TIANJIN POLYTECHNIC UNIV
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