公开(公告)号：US11726330B2

公开(公告)日：2023-08-15

申请号：US17154737

申请日：2021-01-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seong-Mok Cho ,  Yong Hae Kim ,  Hyunkoo Lee ,  Sang Hoon Cheon ,  Kyunghee Choi ,  Chi-Sun Hwang

IPC: G02B27/00 ,  G02B27/01 ,  G02C1/06 ,  H10K50/858 ,  H10K59/90

CPC classification number: G02B27/0172 ,  G02C1/06 ,  H10K50/858 ,  H10K59/90 ,  G02B2027/0178

Abstract: Provided are a display device and an augmented reality apparatus including the same. The display device includes a display panel including display blocks and an optics array including pin hole structures that one-to-one correspond to the display blocks. Here, each of the pin hole structures includes a pin hole and a shielding area surrounding the pin hole, and the display blocks are spaced apart from each other in a first direction parallel to a top surface of the display panel and a second direction crossing the first direction and parallel to the top surface of the display panel.

公开(公告)号：US12055891B2

公开(公告)日：2024-08-06

申请号：US17491246

申请日：2021-09-30

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Yong Hae Kim ,  Gi Heon Kim ,  Joo Yeon Kim ,  Jong-Heon Yang ,  Sang Hoon Cheon ,  Seong-Mok Cho ,  Kyunghee Choi ,  Ji Hun Choi ,  Jae-Eun Pi ,  Chi-Sun Hwang

IPC: G03H1/22

CPC classification number: G03H1/2294 ,  G03H2225/22 ,  G03H2225/34

Abstract: Provided is an operation method for a digital hologram implementation device including a backlight and a spatial light modulator, the operation method including setting an initial phase value of an optical signal to a remedy phase, computing a reduced phase based on the remedy phase, correcting the remedy phase based on a difference between the reduced phase and a preset optimized phase, determining whether the corrected remedy phase is a stabilized phase, performing forward propagation on the stabilized phase and an amplitude of the optical signal, correcting the amplitude of the optical signal, performing backward propagation on the corrected amplitude and the stabilized phase, and determining whether a phase derived by the backward propagation is an optimized phase.