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Holographic display method and holographic display device

A holographic display and holographic technology, applied in the field of holographic display, can solve the problems of limited viewing angle, the observer cannot move at will, affecting the look and feel, etc., to achieve the effect of expansion

Active Publication Date: 2021-03-05
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the window size of the window hologram is determined by the hardware parameters and cannot be adjusted. This will limit the visible range of the window hologram to the window, and there is a defect that the viewing angle is limited. The small viewing angle means that the observer cannot move the position at will, otherwise Affect perception

Method used

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  • Holographic display method and holographic display device
  • Holographic display method and holographic display device
  • Holographic display method and holographic display device

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Experimental program
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Effect test

Embodiment 1

[0048]In this embodiment, the size of the window holographic window is determined by hardware parameters. The hardware parameters determine that normal images cannot be seen outside the window area, and hardware parameters are usually not adjustable, which will limit the visible range of the window hologram to the window. The problem is to provide a holographic display method, by adjusting the complex amplitude distribution of the hologram to present a holographic image in multiple diffraction order areas, setting up a window other than the existing window area so that normal images can be seen, and realizing the holographic visual range of the window Expansion, and the expansion of the window holographic viewing range will greatly increase the comfort of the viewer.

[0049] The holographic display method is based on the phase connection between different levels of diffraction, and can realize the expansion of the window by adjusting the data. Such as figure 2 As shown, the...

Embodiment 2

[0078] Corresponding to the display method in Embodiment 1, this embodiment provides a holographic display device, which presents holographic images in multiple diffraction order regions by adjusting the complex amplitude distribution of the hologram, and realizes the expansion of the holographic visual range of the window.

[0079] Such as Figure 5 As shown, the holographic display device includes a spatial light modulator 2, and also includes a calculation unit 3, an eye position acquisition unit 4 and a processing unit 5, wherein:

[0080] The eye position acquisition unit 4 is used to acquire the position of the window where the eye is located, and transmit the eye position to the calculation unit 3;

[0081] The calculation unit 3 is used to calculate the holographic complex amplitude distribution corresponding to the N-order diffraction window according to the diffraction level area corresponding to the position of the eye in the window to obtain window hologram informa...

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Abstract

The invention belongs to the technical field of holographic display, and in particular relates to a holographic display method and a holographic display device. The holographic display method includes the steps of: obtaining the diffraction level area corresponding to the eye at the window position; calculating the holographic complex amplitude distribution corresponding to the N-level diffraction window according to the diffraction level area corresponding to the eye at the window position to obtain the window hologram information, and the holographic complex The amplitude distribution function is: according to the diffraction level area corresponding to the position of the eye in the window, encode the window hologram information corresponding to the N-level diffraction window; according to the coded window hologram information, load and display it in the diffraction level area corresponding to the window. The holographic display method and the corresponding holographic display device adjust the complex amplitude of the hologram according to the position of the observer's eyes, so that they are respectively distributed in multiple diffraction order regions to present holographic images, thereby realizing the expansion of the holographic visual range of the window.

Description

technical field [0001] The invention belongs to the technical field of holographic display, and in particular relates to a holographic display method and a holographic display device. Background technique [0002] Hologram display technology was first used in the field of 3D imaging. In recent years, with the urgent demand for 3D display in society, hologram display technology has developed rapidly in both display devices and implementation methods. At present, key components of a holographic stereoscopic display system include a coherent light source, a recording medium, and a spatial light modulator (Spatial Light Modulator, SLM for short). The coherent light provides object light, reference light and reproduction light, the recording medium can record holographic interference fringes to form a hologram, and the spatial light modulator can reproduce the holographic image display. [0003] Holographic stereoscopic display can provide full physical depth of field. With the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03H1/08G03H1/12
CPCG03H1/0866G03H1/12G03H1/08G03H1/22G03H1/0808G03H1/2294G03H2001/0816G03H2001/0858G03H2001/2236G03H2001/2242G03H2001/2263G03H2001/2271G03H2001/303G03H2210/30G03H2210/33G03H2210/454G03H2222/34G03H2223/16G03H2225/35G03H2226/02G03H2226/05G03H1/0005
Inventor 石炳川
Owner BOE TECH GRP CO LTD