Title:
DISPLAY DEVICE USING DIFFRACTION UNIT
Document Type and Number:
WIPO Patent Application WO/2019/221425
Kind Code:
A1
Abstract:
Disclosed is a display device comprising: an output unit which forms an image and outputs the image in the forward direction; a lens unit which is arranged in front of the output unit and through which the output image passes and is then transmitted in the forward direction; a guide unit which is long, has at least one pair of total reflection surfaces facing each other, is partly arranged between the output unit and the lens unit, and has a transmission path along which illumination light incident on one side of the guide unit moves towards the other side thereof through at least one instance of total internal reflection; and a diffraction unit which is arranged on the transmission path, has a predetermined pattern, and transmits the illumination light incident thereon to the output unit at a predetermined angle, wherein the diffraction unit selectively refracts or reflects the incident illumination light in accordance with the characteristics of the incident illumination light, and transmits the illumination light in a predetermined direction.
Inventors:
KIM DONG HA (KR)
KIM YOUNG IL (KR)
SON BYEONG SOO (KR)
SEO GYE WON (KR)
KIM YOUNG IL (KR)
SON BYEONG SOO (KR)
SEO GYE WON (KR)
Application Number:
PCT/KR2019/005190
Publication Date:
November 21, 2019
Filing Date:
April 30, 2019
Export Citation:
Assignee:
EPICOPTIX (KR)
International Classes:
G02B27/42; G02B5/32; G02B17/08; G02B27/01
Foreign References:
| JP2012042654A | 2012-03-01 | |||
| KR20030088217A | 2003-11-19 | |||
| JP2005241825A | 2005-09-08 | |||
| KR20170024443A | 2017-03-07 | |||
| KR20080053628A | 2008-06-16 |
Attorney, Agent or Firm:
KO, Young Kap (KR)
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