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Computer-generated hologram

A hologram and computer technology, which is applied in the field of computer-synthesized holograms, can solve problems such as resolution parallax and multiple holograms, and achieve the effects of simple image processing, high-quality reproduced images, and no image distortion

Active Publication Date: 2006-05-10
DAI NIPPON PRINTING CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] The present invention aims to solve the shortcomings of the above-mentioned prior art methods, and the purpose is to provide a very high resolution, a large number of parallax, no image distortion problem, no need to Computer-synthesized hologram for 3D image reproduction with simple image processing and holography

Method used

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Embodiment Construction

[0047] Best Mode for Carrying Out the Invention

[0048] The basic principle of the computer-synthesized hologram of the present invention is, in order to eliminate the pixel structure on the hologram surface, on the position away from the hologram surface, define a lot of its emission brightness different because of different emission directions, have the same direction as the object surface. the virtual point light sources whose emission brightness is the same as that on the surface of the object, whose emission brightness is different due to the different focusing directions, and which have the same emission brightness as that on the surface of the object; to emit from these virtual point light sources The light or the light converging on these virtual focusing points is used as virtual object light to make a computer-synthesized hologram, so as to make a high-resolution computer-synthesized hologram (CGH) without holography.

[0049] The principle of the computer-synthesiz...

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Abstract

The invention relates to a computer-synthesized hologram for three-dimensional image reproduction with high resolution, large number of parallaxes, no image distortion, no need for holographic photography, and simple image processing. It can record complex amplitudes of object light and can In the computer-synthesized hologram (12) that reproduces a three-dimensional object, a virtual point light source group (11) is spatially set on the side opposite to the observation side of the hologram (12), and each virtual point of the virtual point light source group The brightness angle distribution TWLci (θxz, θyz) of the divergent light emitted by the light source to the observation side is the same as the brightness angle distribution on the surface of the object (10) to be recorded when the virtual point light source is seen from the observation side, and from the virtual point light source The initial phases of the divergent light emitted by each point light source are respectively set so that certain divergent lights are superimposed on each other, and recorded as object light (1) at any position on the observation side of the virtual point light source group (11).

Description

technical field [0001] The invention relates to a computer-synthesized hologram, in particular to a computer-synthesized hologram for reproducing high-quality three-dimensional images with relatively simple production and high resolution. Background technique [0002] There has long been a desire to record three-dimensional images on a flat surface, and holography has been developed as an example of this. The so-called holography is a technology that uses a high-coherence laser light source to capture a three-dimensional image of an object. A three-dimensional image display medium made by holography is called a hologram. A hologram is made by irradiating laser light on the object to be photographed and recording it on a photosensitive material, so the object as the object must actually exist, which is a limitation. In addition, it is required to achieve stillness at the light wavelength level during shooting, so it is difficult to shoot objects that are easy to move, such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03H1/08
CPCG03H1/0808G03H1/0891G03H2001/226G03H2210/30G03H2210/441G03H2210/454G03H2210/62G03H2222/22
Inventor 北村满
Owner DAI NIPPON PRINTING CO LTD
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