Title:
FULL COLOR HOLOGRAPHIC DISPLAY METHOD IN FDM-BASED SINGLE SLM USING DOUBLE SHIFTING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/225778
Kind Code:
A1
Abstract:
The present invention relates to a full color holographic display method in an FDM-based single SLM using a double shifting method, in which three PFP groups with different center offsets are precomputed so as to produce three channel image-shift-holograms (ISHs) with the same offsets as corresponding PFPs, then a reverse image position correction process is performed by multiplying three channel main images by three different phase shifting factors so as to restore the three channel main images to original overlap positions, and a spatial position of a frequency spectrum is individually movable as an image resulting from chromatic dispersion is easily blocked by an optical pinhole array filter on the Fourier side of a 4-f lens system so that it is possible to perform elimination from a final primary color image. Accordingly, the present invention has a significant effect of being able to directly control a position of a frequency spectrum of an RGB channel hologram simultaneously with a simplified image movement and phase shifting process.
Inventors:
KIM EUN SOO (KR)
LIN SHU FENG (KR)
LIN SHU FENG (KR)
Application Number:
PCT/KR2018/005857
Publication Date:
November 28, 2019
Filing Date:
May 23, 2018
Export Citation:
Assignee:
KWANGWOON UNIV INDUSTRYACADEMIC COLLABORATION FOUNDATION (KR)
International Classes:
G03H1/22; G03H1/02
Foreign References:
| KR20170132452A | 2017-12-04 | |||
| JP2014197002A | 2014-10-16 | |||
| KR20130099650A | 2013-09-06 | |||
| KR20140062883A | 2014-05-26 |
Other References:
SHU-FENG LIN: "Single SLM full-color holographic 3-D display based on sa mpling and selective frequency-filtering methods", OPTICS EXPRESS, 15 May 2017 (2017-05-15), pages 11389 - 11404, XP055658157
Attorney, Agent or Firm:
KIM, Seok Kea (KR)
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