公开(公告)号：US20180267324A1

公开(公告)日：2018-09-20

申请号：US15317203

申请日：2015-12-01

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Ji Soo HONG ,  Hoon Jong KANG ,  Sung Hee HONG ,  Choon Sung SHIN ,  Young Min KIM

IPC: G02B27/09

CPC classification number: G02B27/0955 ,  G02B26/00 ,  G02B27/0983 ,  H01S3/0085

Abstract: A laser light source shutter system includes a light source, a variable focus optical element to transmit a beam emitted from the light source, a pinhole located on an optical path through which the beam travels from the variable focus optical element, and a controller to control a transmission and blocking of the beam by controlling a focal length of the variable focus optical element to be equal to a distance between the variable focus optical element and the pinhole or to be equal to other distances different from the distance. Therefore, a laser light source shutter free from vibration can be realized electronically with a low cost and a high light-blocking rate using a variable focus optical element such as a variable focus lens and a variable focus mirror.

公开(公告)号：US20200051533A1

公开(公告)日：2020-02-13

申请号：US16339909

申请日：2016-10-07

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Sung Hee HONG ,  Hoon Jong KANG ,  Choon Sung SHIN ,  Ji Soo HONG ,  Young Min KIM

IPC: G09G5/38 ,  G09G5/373

Abstract: Provided are a system and a method for displaying content in association with a position of a projector. A method for displaying an image, according to one embodiment of the present invention, comprises identifying a position of an image output device, generating a partial image from a full image on the basis of the position of the image output device, and outputting the generated partial image by means of the image output device. As a result, since the image projected from the image output device changes in association with the position of the image output device, a more realistic AR/VR may be provided.

公开(公告)号：US20170311164A1

公开(公告)日：2017-10-26

申请号：US15327375

申请日：2016-01-22

Applicant: Korea Electronics Technology Institute

Inventor： Choon Sung SHIN ,  Sung Hee HONG ,  Ji Soo HONG ,  Young Min KIM ,  Hoon Jong KANG ,  Young Choong PARK

IPC: H04W12/12 ,  G06K19/10 ,  H04W12/06 ,  G01V15/00 ,  G06K9/00 ,  G06K19/06

CPC classification number: H04W12/12 ,  B29C67/00 ,  B33Y50/02 ,  B33Y80/00 ,  G01V15/00 ,  G06K9/0004 ,  G06K19/06159 ,  G06K19/10 ,  G06K19/14 ,  G06K2009/0059 ,  G06K2019/06243 ,  H04W12/06

Abstract: A method for inserting information into a 3D structure and recognizing information in a non-destructive method is provided. A 3D printing method according to an exemplary embodiment of the present invention includes: generating a tag having specific information recorded thereon to be inserted into a 3D structure, and printing the tag on the inside of the 3D structure while printing the 3D structure. Accordingly, since the tag having information recorded thereon is printed on the inside of the 3D structure when the 3D structure is printed by a 3D printer, it is impossible to forge/falsify information.