公开(公告)号：US20240192638A1

公开(公告)日：2024-06-13

申请号：US17904744

申请日：2021-12-30

Applicant: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

Inventor： Byoungho LEE ,  Dukho LEE ,  Kiseung BANG ,  Seung-Woo NAM

IPC: G03H1/22 ,  G03H1/04 ,  G03H1/08 ,  G03H1/12

CPC classification number: G03H1/2202 ,  G03H1/0443 ,  G03H1/0486 ,  G03H1/0808 ,  G03H1/12 ,  G03H2001/045 ,  G03H2001/0833 ,  G03H2001/2239

Abstract: A holographic display apparatus and a hologram optimization method for the apparatus are provided. The holographic display apparatus includes a focus-forming optical element configured to form a plurality of foci by receiving plane waves; a collimating lens configured to propagate, as plane waves, light incident through the plurality of foci; and a spatial light modulator configured to generate a holographic image by overlapping a plurality of plane waves incident from the collimating lens.

公开(公告)号：US20210397130A1

公开(公告)日：2021-12-23

申请号：US17242723

申请日：2021-04-28

Applicant: Samsung Display Co., LTD. ,  Seoul National University R&DB Foundation

Inventor： Sang-Ho KIM ,  Dukho LEE ,  Byungchoon YANG ,  Byoungho LEE ,  Jaebum CHO

IPC: G03H1/22 ,  G03H1/16 ,  G03H1/08

Abstract: A hologram display device includes a light generator generating light, a spatial light modulator forming an interference pattern to interfere with the light, and a controller providing interference data to the spatial light modulator to form the interference pattern. The spatial light modulator includes a first area in which pixels are arranged in a first pattern, and a second area in which pixels are arranged in a second pattern. The controller includes a data generator generating first interference data for the first area and second interference data for the second area, a compensator generating first correction data based on the first interference data and second correction data by correcting the second interference data, and an output unit generating the interference data based on the first correction data and the second correction data.

公开(公告)号：US20200183329A1

公开(公告)日：2020-06-11

申请号：US16738658

申请日：2020-01-09

Applicant: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

Inventor： Byoungho LEE ,  Youngmo JEONG ,  Gang LI ,  Dukho LEE

IPC: G03H1/22 ,  G03H1/28 ,  G03H1/04

Abstract: An apparatus for manufacturing a hologram includes a holographic optical element on which a first interference pattern of a first signal beam and a first reference beam is recorded and a second interference pattern of a second signal beam modulated by a Fourier lens and a second reference beam is recorded. Also, an apparatus for reconstructing a hologram by using the holographic optical element is provided.

公开(公告)号：US20180129165A1

公开(公告)日：2018-05-10

申请号：US15807199

申请日：2017-11-08

Applicant: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

Inventor： Byoungho LEE ,  Youngmo JEONG ,  Gang LI ,  Dukho LEE

IPC: G03H1/22 ,  G03H1/04

CPC classification number: G03H1/2205 ,  G03H1/0406 ,  G03H1/0443 ,  G03H1/2286 ,  G03H1/2294 ,  G03H1/28 ,  G03H2001/0413 ,  G03H2001/0415 ,  G03H2001/0439 ,  G03H2001/045 ,  G03H2001/221 ,  G03H2001/2284 ,  G03H2222/33 ,  G03H2223/23

Abstract: An apparatus for manufacturing a hologram includes a holographic optical element on which a first interference pattern of a first signal beam and a first reference beam is recorded and a second interference pattern of a second signal beam modulated by a Fourier lens and a second reference beam is recorded. Also, an apparatus for reconstructing a hologram by using the holographic optical element is provided.