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Holographic display device and method for generating hologram

A technology for generating holograms and holographic displays, which is applied in the field of generating holograms and can solve problems such as the limitation of viewing angles

Inactive Publication Date: 2013-09-11
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The difference between a bulk hologram and a sub-hologram is that in a sub-hologram, the range of viewing angles that the viewer (or user) can see is limited

Method used

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  • Holographic display device and method for generating hologram
  • Holographic display device and method for generating hologram
  • Holographic display device and method for generating hologram

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Embodiment Construction

[0038] Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. However, the embodiments of the present invention described below can be modified to a wide range of modifications. And, therefore, it should be understood that the basic structure and application of the present invention will not be limited to the examples shown in the description of the present invention set forth herein.

[0039] In addition, although the terms used in the present invention are selected from publicly known and commonly used terms, the terms used herein may be changed or modified according to the intention or practice of those skilled in the art, or with the arrival of new technologies. Or, in some specific cases, some terms mentioned in the description of the present invention are selected by the applicant, and the specific meanings of these terms are explained in relevant parts of the description herein....

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PUM

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Abstract

A holographic display device and a method for generating a hologram are disclosed. The holographic display device generating a hologram includes a storage unit (180) and a control unit (190). Herein, the storage unit stores at least one look-up table each storing a partial size (400, 600) of a full size (300,500) sub-hologram for reconstructing object point (OP), wherein the object points (OP) are included in a scene reconstructed by the generated hologram. And, the control unit uses at least one look-up table each having the partial size, so as to calculate hologram values for the sub-holograms for reconstructing object points (OP), wherein the object points (OP) are included in the scene, and then the control unit generates the hologram by overlapping the hologram values of the sub-holograms. The object points (OP) are included in the scene.

Description

technical field [0001] The present invention relates to a hologram display device and method for generating a hologram, and more particularly, to a hologram display device and method for generating a hologram by superimposing sub-holograms. Background technique [0002] A computer generated hologram (CGH) may include a calculation method resulting from a ray tracing method, a calculation method using a reference table (hereinafter referred to as a lookup table), and a method employing a Fast Fourier Transform (FFT) method. In addition, CGH can also include bulk holograms using a large viewing angle and sub-holograms with a limited viewing angle. Here, a look-up table can also be used when calculating sub-holograms. Also, by using a lookup table, the calculation speed can be greatly enhanced. [0003] Among the existing techniques for generating (or creating) holistic holograms, a paper titled "Interactive computation of holograms using a look-up table" by M.Lucente in 1993...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03H1/22G03H1/08
CPCG02B5/1876G03H1/0808G03H1/2294G03H2001/0833G03H2001/2236G03H2001/2242G03H2210/452G03H2210/454G03H2225/21G03H2225/22G03H2226/05G03H2227/02G03H1/02G03H1/08
Inventor 权度佑文元硕朴佑济
Owner LG ELECTRONICS INC
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