Title:
HOLOGRAPHIC PRINTER USING MECHANICAL SHUTTER HAVING ADJUSTABLE EXPOSURE TIME AND NO VIBRATION
Document Type and Number:
WIPO Patent Application WO/2023/106438
Kind Code:
A1
Abstract:
Provided is a holographic printer using a mechanical shutter having adjustable exposure time and no vibration. The holographic printer according to an embodiment of the present invention comprises: a light source; a modulator for generating a holographic fringe pattern in hogel units; a stage on which a hologram recording medium is placed; a driving part for moving the position of the stage in hogel units; and a shutter for periodically exposing an object light due to the holographic fringe pattern generated by the modulator to the hologram recording medium. The shutter comprises: a rotation plate having formed therein an arc-shaped opening which exposes the object light due to the holographic fringe pattern; and a motor for rotating the rotation plate. Therefore, the exposure period and exposure time of the shutter can be variously adjusted by adjusting the rotational state of the rotation plates having the arc-shaped opening formed therein.
Inventors:
HONG SUNG HEE (KR)
KIM YOUNG MIN (KR)
HONG JI SOO (KR)
KIM YOUNG MIN (KR)
HONG JI SOO (KR)
Application Number:
PCT/KR2021/018427
Publication Date:
June 15, 2023
Filing Date:
December 07, 2021
Export Citation:
Assignee:
KOREA ELECTRONICS TECHNOLOGY (KR)
International Classes:
G03H1/04
Foreign References:
| KR20200044541A | 2020-04-29 | |||
| KR20080112569A | 2008-12-26 | |||
| KR100965890B1 | 2010-06-24 | |||
| JP2012221520A | 2012-11-12 | |||
| US20150098066A1 | 2015-04-09 |
Attorney, Agent or Firm:
NAM, Choong Woo (KR)
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