公开(公告)号：US20240353796A1

公开(公告)日：2024-10-24

申请号：US18638918

申请日：2024-04-18

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Min Sik PARK ,  Joong Ki PARK

IPC分类号： G03H1/16 ,  G03H1/08 ,  H04N19/61 ,  H04N19/70

CPC分类号： G03H1/16 ,  G03H1/0808 ,  H04N19/61 ,  H04N19/70 ,  G03H2225/32

摘要： A method and apparatus for compressing hologram is disclosed. The apparatus includes memory to store one or more instructions, and one or more processors to execute the one or more instructions in the memory, wherein the one or more processors perform generating phase wavefront blocks using a frame of a phase-only hologram, generating a first prediction wavefront block using one of the phase wavefront blocks, generating a differential wavefront block using a phase wavefront block and the first prediction wavefront block, transforming and quantizing the differential wavefront block, generating a restored differential wavefront block by inversely quantizing and inversely transforming the differential wavefront block transformed and quantized, generating a restored phase wavefront block using the restored differential wavefront block, generating a restored phase wavefront using restored phase wavefront blocks generated using the restored differential wavefront blocks, and restoring the phase-only hologram using the restored phase wavefront.

公开(公告)号：US20240302791A1

公开(公告)日：2024-09-12

申请号：US18118642

申请日：2023-03-07

申请人： Intel Corporation

发明人： Alexey Supikov ,  Michael Mefenza Nentedem

IPC分类号： G03H1/02 ,  G03H1/08

CPC分类号： G03H1/02 ,  G03H1/0808 ,  G03H2001/0224 ,  G03H2225/32

摘要： A method and system calibrates spatial light modulators.

公开(公告)号：US11726432B2

公开(公告)日：2023-08-15

申请号：US17056249

申请日：2019-06-10

申请人： Dualitas Ltd

发明人： Jamieson Christmas ,  Niall McGee

IPC分类号： G03H1/08 ,  G03H1/22 ,  G03H1/16

CPC分类号： G03H1/2294 ,  G03H1/08 ,  G03H1/16 ,  G03H1/2205 ,  G03H2222/12 ,  G03H2225/32

摘要： There is provided a holographic projector comprising a processing engine, spatial light modulator (403B), light source (401B) and light-receiving surface (405B). The processing engine outputs a computer-generated diffractive pattern defining a propagation distance to an image plane. The spatial light modulator displays the computer-generated diffractive pattern. The light source illuminates the spatial light modulator at an angle of incidence (theta) greater than zero. The light-receiving surface receives spatially-modulated light from the spatial light modulator. The light-receiving surface is substantially parallel to the spatial light modulator (alpha-theta). The light-receiving surface is separated from the spatial light modulator by the propagation distance defined by the computer-generated diffractive pattern.

公开(公告)号：US11693364B2

公开(公告)日：2023-07-04

申请号：US16765993

申请日：2018-11-28

申请人： Samsung Electronics Co., Ltd.

发明人： Mikhail Vyacheslavovich Popov ,  Stanislav Aleksandrovich Shtykov ,  Sergey Aleksandrovich Shestak ,  Seondeok Hwang

IPC分类号： G03H1/22 ,  G02F1/1333

CPC分类号： G03H1/2294 ,  G02F1/133362 ,  G03H1/2205 ,  G02F2203/12 ,  G02F2203/50 ,  G03H2223/23 ,  G03H2225/22 ,  G03H2225/25 ,  G03H2225/32 ,  G03H2225/60

摘要： A holographic display and a method, performed by the holographic display, of forming a holographic image are disclosed. The holographic display includes an electrically addressable spatial light modulator (EASLM); a diffractive optical element (DOE) mask array arranged on the EASLM; and a controller configured to operate the holographic display to form a hologram image, wherein the controller is further configured to address the EASLM to backlight the DOE mask array required to form a set of hologram image voxels by turning on a corresponding EASLM pixel.

公开(公告)号：US11659146B2

公开(公告)日：2023-05-23

申请号：US17373792

申请日：2021-07-13

申请人： DOLBY LABORATORIES LICENSING CORPORATION

发明人： Trevor Davies ,  Martin J. Richards ,  Barret Lippey ,  Juan P. Pertierra ,  Christopher John Orlick ,  Peter Francis Van Kessel

IPC分类号： H04N9/31 ,  G02B27/10 ,  G02B26/06 ,  G03H1/22 ,  H04N5/74

CPC分类号： H04N9/31 ,  G02B26/06 ,  G02B27/1046 ,  G03H1/2294 ,  H04N5/7416 ,  H04N9/3126 ,  H04N9/3197 ,  G03H2225/32

摘要： A novel projection system includes a light source, a phase modulator, an amplitude modulator, and a controller having temporal lightfield simulation capabilities. The phase modulator spatially modulates a lightfield from the light source to generate an intermediate image on the amplitude modulator. The amplitude modulator spatially modulates the intermediate image to form a final image. The controller models the phase state of the phase modulator during transitions between phase modulator frames and generates lightfield simulations of the intermediate image during the transition. The controller utilizes the lightfield simulations to generate and provide sets of amplitude drive values to the amplitude modulator at a faster rate than that at which the phase modulator is capable of switching.

公开(公告)号：US20190064737A1

公开(公告)日：2019-02-28

申请号：US15920771

申请日：2018-03-14

申请人： BOE TECHNOLOGY GROUP CO., LTD.

发明人： Bingchuan SHI

IPC分类号： G03H1/14 ,  G03H1/12 ,  G03H1/04

CPC分类号： G03H1/14 ,  G03H1/0443 ,  G03H1/12 ,  G03H1/2286 ,  G03H1/2294 ,  G03H2001/0224 ,  G03H2001/2292 ,  G03H2210/11 ,  G03H2210/12 ,  G03H2210/44 ,  G03H2223/24 ,  G03H2225/31 ,  G03H2225/32 ,  G03H2225/33 ,  G03H2225/34

摘要： The present disclosure provides an optical modulation device, an optical modulation method and a holographic display apparatus. The optical modulation device is configured to perform optical modulation of a light beam and comprising: an amplitude modulator, configured to perform amplitude modulation of the light beam based on amplitude information in complex amplitude information of each pixel of a digital hologram; an optical scanning assembly, configured to scan the light beam within a predetermined range; a phase modulator, configured to perform phase modulation of the light beam based on phase information in the complex amplitude information.

公开(公告)号：US20180284018A1

公开(公告)日：2018-10-04

申请号：US15769720

申请日：2016-10-19

申请人： THE REGENTS OF THE UNVIVERSITY OF CALIFORNIA

发明人： Lin Pang ,  Yeshaiahu Fainman ,  Andrew C. Kummel ,  Brandon Hong

IPC分类号： G01N21/49 ,  G01N21/94 ,  G01N21/45

CPC分类号： G01N21/49 ,  G01N15/00 ,  G01N15/0227 ,  G01N21/45 ,  G01N21/94 ,  G01N2015/0046 ,  G01N2015/0233 ,  G01N2015/1454 ,  G03H1/0443 ,  G03H1/0465 ,  G03H2001/0033 ,  G03H2001/0447 ,  G03H2001/0452 ,  G03H2001/0469 ,  G03H2222/35 ,  G03H2222/44 ,  G03H2225/32

摘要： Methods, systems, and devices for particle characterization by optical phase modulation and detection of aerosol backscattering. In some aspects, a compact and cost effective particle detector device to measure the aerosol density and its size distribution by backscattered focusing using projected optical modified field distribution imaging into the aerosol medium (air). The disclosed device can be used in a variety of scientific and industrial applications, e.g., such as a particle sensor for automobiles able to detect harmful pollution which may then be filtered from the car cabin, or warnings provided to the driver. The device can also capture and store data, enabling detailed pollution maps of various roadways in real-time.

公开(公告)号：US10036888B2

公开(公告)日：2018-07-31

申请号：US14579636

申请日：2014-12-22

申请人： Korea Advanced Institute of Science and Technology

发明人： YongKeun Park ,  Kyeo Reh Lee

IPC分类号： G02B26/08 ,  G02F1/29 ,  H04B10/12 ,  G02B27/00 ,  G02B26/06 ,  H04B10/516 ,  H04B10/548 ,  H04B10/524 ,  H04B10/50 ,  G03H1/10 ,  H04B10/508 ,  G03H1/16

CPC分类号： G02B27/0012 ,  G02B26/06 ,  G02F2203/18 ,  G02F2203/50 ,  G03H1/10 ,  G03H1/16 ,  G03H2225/32 ,  H04B10/50577 ,  H04B10/508 ,  H04B10/516 ,  H04B10/524 ,  H04B10/548

摘要： A single-channel phase conjugation apparatus includes a spatial light modulator and a single-channel optical sensing and generating unit. The spatial light modulator receives a light having a wavefront scattered by a scattering object. The single-channel optical sensing and generating unit senses a phase control wavefront of an output light focused by the spatial light modulator and outputs a light having a phase conjugation wavefront by changing a direction of the output light in a reverse direction depending on the phase control wavefront.

公开(公告)号：US20180188684A1

公开(公告)日：2018-07-05

申请号：US15739116

申请日：2016-12-22

申请人： Dualitas Ltd.

发明人： Brian MULLINS

IPC分类号： G03H1/00 ,  G03H1/22 ,  B29C64/393 ,  B29C64/153 ,  B29C64/268 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/34 ,  B23K26/354

CPC分类号： G03H1/0005 ,  B23K26/34 ,  B23K26/354 ,  B29C64/10 ,  B29C64/153 ,  B29C64/264 ,  B29C64/268 ,  B29C64/386 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/00 ,  B33Y50/02 ,  G03H1/2286 ,  G03H1/2294 ,  G03H2001/0094 ,  G03H2210/20 ,  G03H2225/32 ,  G03H2225/52 ,  G03H2240/51

摘要： A printing device (106) includes a dynamic holography printing application configured to generate a laser control signal and a LCOS-SLM (Liquid Crystal on Silicon Spatial Light Modulator) control signal based on a two-dimensional content corresponding to a lithography mask. A laser source (110) generates a plurality of incident laser beams based on the laser control signal. A LCOS-SLM (112) modulates the plurality of incident laser beams based on the LCOS-SLM control signal, generates a plurality of holographic wavefronts (214,216), each holographic wavefront forming at least one corresponding focal point. The LCOS-SLM generates a plurality of distinct focused light field regions (506,508,510) at interference points of focal points of the plurality of holographic wavefronts. The plurality of distinct focused light field regions correspond to the two-dimensional content.

公开(公告)号：US10012886B2

公开(公告)日：2018-07-03

申请号：US15462576

申请日：2017-03-17

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Seong-Mok Cho ,  Tae-Youb Kim ,  Seung Youl Lee ,  Yong Hae Kim ,  Hojun Ryu ,  Juhee Song ,  Chil Seong Ah ,  Jeong Ik Lee ,  Chi-Sun Hwang

IPC分类号： G02F1/01 ,  G02F1/15 ,  G02F1/161 ,  G02F1/155 ,  G02F1/157 ,  G02F1/1335

CPC分类号： G02F1/1506 ,  G02B26/06 ,  G02F1/133553 ,  G02F1/15 ,  G02F1/155 ,  G02F1/157 ,  G02F1/161 ,  G02F2203/12 ,  G03H1/00 ,  G03H1/02 ,  G03H2001/0224 ,  G03H2225/32

摘要： Disclosed is an optical modulator. An optical modulator comprises a substrate, an upper transparent electrode on the substrate, a partition wall providing a chamber between the substrate and the upper transparent electrode, an optical modulation member provided in the chamber and disposed on the substrate, and an electrolyte filling the chamber and including a first metal in an ionic state. The optical modulation member comprises a reflection layer on the substrate, and a lower transparent electrode on the reflection layer.