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Printing system of holographic stereogram and with abnormal-shaped mask plate

A printing system and mask technology, applied in the direction of instruments, etc., can solve the problems of leakage, large spectrum, and the quality of reproduced images of holographic stereoscopic view system, and achieve the effect of avoiding calculation process, improving printing output speed, and high-quality reproduction effect.

Active Publication Date: 2013-12-04
ACADEMY OF ARMORED FORCES ENG PLA
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AI Technical Summary

Problems solved by technology

Due to its vertically falling edges (often called hard-edged apertures), the Fourier spectrum of the rectangular aperture has serious sidelobes, which will cause large spectral leakage during image reconstruction, resulting in a holographic stereoscopic image. Degradation of system reproduced image quality

Method used

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  • Printing system of holographic stereogram and with abnormal-shaped mask plate
  • Printing system of holographic stereogram and with abnormal-shaped mask plate
  • Printing system of holographic stereogram and with abnormal-shaped mask plate

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Embodiment Construction

[0024] The "a holographic volume view printing system using a special-shaped mask" of the present invention will be further described below in conjunction with the accompanying drawings and examples.

[0025] figure 1 The first embodiment of the holographic volume view printing system provided by the present invention includes a laser light source (1), a beam splitter (2), a beam expander collimation system (3), a spatial light modulator (4), a computer (5 ), a total reflection mirror (6), a focusing lens (7), a hologram recording material (8), and a special-shaped mask (9).

[0026] In this embodiment, the spatial light modulator (4) adopts a reflective type, and the exposure process of the holographic recording material (8) adopts a bidirectional exposure method. After the light emitted by the laser light source (1) passes through the beam splitter (2), one beam passes through the total reflection mirror (6) and the focusing lens (7) and directly reaches the holographic rec...

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Abstract

The invention belongs to the technical field of holographic printing and three-dimensional display and particularly relates to a printing system of a holographic stereogram and with an abnormal-shaped mask plate. The printing system is formed by a laser light source, a beam splitter, an expanded beam collimation system, a spatial light modulator, a computer, a total reflection lens, a focusing lens, hologram recording materials, the abnormal-shaped mask plate, a target object and a CCD (Charge Coupled Device) camera. A transformation parallax image of the target object is obtained through the CCD camera and the computer and loaded into the spatial light modulator, a light beam which is emitted from the laser light source is modulated, interference is produced between the modulated light beam and the other laser beam which is reflected by the beam splitter, the two light beams penetrate the abnormal-shaped mask plate to be exposed and recorded on the holographic recording materials, and accordingly printout of the holographic stereogram of the target object is achieved. The printing system of the holographic stereogram and with the abnormal-shaped mask plate has the advantages of being capable of effectively improving the printout speed of the hologram, solving the problem of frequency spectrum leakage of the traditional hard edge aperture printing of the holographic stereogram due to the abnormal-shaped mask plate and improving the representing quality of the holographic stereogram.

Description

technical field [0001] The invention belongs to the technical field of holographic printing and three-dimensional display, and in particular relates to a holographic volume view printing system using a special-shaped mask. Background technique [0002] Three-dimensional display technology is an ideal display technology for human beings, and it is the goal that people are constantly pursuing. With the rapid development of science and information technology, fields such as battlefield command, medical image processing, air navigation, and stereoscopic television have put forward urgent demands for 3D display technology. Holographic display technology can completely record and reconstruct the wavefront of three-dimensional objects, and provide all the depth information required by human eyes. It is currently the most promising three-dimensional display technology (such as S.Tay et.al., An updatable holographic three- dimensional display, Nature451, 695-698(2008); P. A.Blanche ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03H1/22G03H1/12
Inventor 闫兴鹏蒋晓瑜裴闯刘军辉徐丙立汪熙赵锴赵哲
Owner ACADEMY OF ARMORED FORCES ENG PLA
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