Title:
HOLOGRAPHIC WAVEFRONT PRINTING SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO/2023/202020
Kind Code:
A1
Abstract:
A holographic wavefront printing system and method. A two-dimensional digital blazed grating is loaded on a phase hologram, and the emergent direction of active region diffracted light is adjusted, such that corresponding frequency spectra of the active region diffracted light and dead region diffracted light after being subjected to an optical Fourier transform of a lens are prevented from overlapping with each other on a back focusing surface of the lens; and a phase spatial light modulator is inclined by a preset angle to change the emergent direction of the diffracted light, such that a dead region zeroth-order diffracted light frequency spectrum and a dead region first-order diffracted light frequency spectrum on a focusing surface are symmetrical with respect to a main optical axis of a first lens, the frequency spectrum center of active region zeroth-order diffracted light after the two-dimensional digital blazed grating is loaded is adjusted to an original frequency spectrum center, and information which is stored in the phase hologram is thus not changed. In this way, the whole printing process is simpler, more convenient and more reliable, thereby eliminating the adverse effect of the dead region diffracted light and active region high-order diffracted light of the phase spatial light modulator on holographic wavefront printing.
More Like This:
Inventors:
XIE XIAOLIN (CN)
ZHOU JINLUN (CN)
PENG HAIYAN (CN)
ZHANG YUN (CN)
ZHOU HUAMIN (CN)
NI MINGLI (CN)
ZHOU XINGPING (CN)
ZHOU JINLUN (CN)
PENG HAIYAN (CN)
ZHANG YUN (CN)
ZHOU HUAMIN (CN)
NI MINGLI (CN)
ZHOU XINGPING (CN)
Application Number:
PCT/CN2022/127549
Publication Date:
October 26, 2023
Filing Date:
October 26, 2022
Export Citation:
Assignee:
UNIV HUAZHONG SCIENCE TECH (CN)
International Classes:
G03H1/04
Domestic Patent References:
| WO2015108272A1 | 2015-07-23 |
Foreign References:
| CN107253400A | 2017-10-17 | |||
| CN107065488A | 2017-08-18 | |||
| CN113900365A | 2022-01-07 | |||
| CN114237002A | 2022-03-25 | |||
| US20190204783A1 | 2019-07-04 | |||
| US20210181677A1 | 2021-06-17 |
Attorney, Agent or Firm:
WUHAN HUAZHIYU INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
Download PDF: