公开(公告)号：US12050434B1

公开(公告)日：2024-07-30

申请号：US17143826

申请日：2021-01-07

Applicant: UNIVERSITY OF SOUTH FLORIDA

Inventor： Myung K. Kim

IPC: G03H1/04 ,  G01B9/021 ,  G03H1/00 ,  G03H1/08

CPC classification number: G03H1/0443 ,  G01B9/021 ,  G03H1/0005 ,  G03H1/0866 ,  G03H2001/005 ,  G03H2001/0883 ,  G03H2226/02

Abstract: Disclosed are various embodiments for wide-area quantitative phase microscopy using spatial phase scanning digital holography. A motorized micrometer is scanned across a field-of-view, and a camera captures a frame of the field-of-view. The frame of the field-of-view is phase shifted by a predetermined number of pixels. The phase-shifted frame is included in a plurality of phase-shifted frames, and a complex optical field is generated based at least in part on the plurality of phase-shifted frames. A segment of the complex optical field is extracted and appended to a plurality of segments of the complex optical field. A holographic image is generated based at least in part on the plurality of segments of the complex optical field.

公开(公告)号：US11977353B2

公开(公告)日：2024-05-07

申请号：US17272669

申请日：2019-08-23

Applicant: CUBIXEL CO., LTD.

Inventor： Tae Geun Kim

IPC: G03H1/04 ,  G02B26/10 ,  G02B27/28

CPC classification number: G03H1/0443 ,  G02B26/101 ,  G02B27/283 ,  G02B27/286 ,  G03H2001/0447 ,  G03H2001/0463 ,  G03H2222/31 ,  G03H2222/45 ,  G03H2223/20 ,  G03H2223/22 ,  G03H2223/24 ,  G03H2225/32 ,  G03H2226/02

Abstract: An optical scanning holography system includes a polarization-sensitive lens configured to receive a linearly polarized beam and generate a first spherical wave of right-handed circular polarized light having a negative focal length and a second spherical wave of left-handed circular polarized light having a positive focal length, a first polarizer configured to pass only a beam component therethrough in a predetermined polarization direction among components of the generated first and second spherical waves, a scanning unit configured to scan an object by using an interference beam generated between the first and second spherical waves passing through the first polarizer, and a first photodetector configured to detect a beam reflected from the object.

公开(公告)号：US20240119111A1

公开(公告)日：2024-04-11

申请号：US18481025

申请日：2023-10-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Won Ok KWON ,  Sang Hoon CHEON

IPC: G06F17/14 ,  G03H1/08 ,  G03H1/16

CPC classification number: G06F17/142 ,  G03H1/0866 ,  G03H1/16 ,  G03H2226/02

Abstract: The present invention relates to a method and apparatus for performing two dimension fast fourier transform for hologram processing. A method for processing a hologram according to an embodiment of the present disclosure may comprise: generating complex data by multiplying the digital image by a random phase value; performing inverse fast fourier transform (IFFT) processing on the complex data; generating pattern information by multiplying a result of the IFFT processing by a quadrant phase; and processing the hologram based on the pattern information. Here, the IFFT processing may comprise a IFFT core operation that performs row-base IFFT and column-base IFFT on the complex data, and a single shift IFFT operation that applies a predefined rule to a result of one or more of the row-based IFFT or the column-based IFFT.

公开(公告)号：US20230341814A1

公开(公告)日：2023-10-26

申请号：US18217626

申请日：2023-07-03

Applicant: CUBIXEL CO.,LTD.

Inventor： Tae Geun KIM

IPC: G03H1/04 ,  G02B26/10 ,  G02B27/28

CPC classification number: G03H1/0443 ,  G02B26/101 ,  G02B27/283 ,  G02B27/286 ,  G03H2001/0447 ,  G03H2001/0463 ,  G03H2222/31 ,  G03H2222/45 ,  G03H2223/20 ,  G03H2223/22 ,  G03H2223/24 ,  G03H2225/32 ,  G03H2226/02

Abstract: An optical scanning holography system includes a polarization-sensitive lens configured to receive a linearly polarized beam and generate a first spherical wave of right-handed circular polarized light having a negative focal length and a second spherical wave of left-handed circular polarized light having a positive focal length, a first polarizer configured to pass only a beam component therethrough in a predetermined polarization direction among components of the generated first and second spherical waves, a scanning unit configured to scan an object by using an interference beam generated between the first and second spherical waves passing through the first polarizer, and a first photodetector configured to detect a beam reflected from the object.

公开(公告)号：US20230315015A1

公开(公告)日：2023-10-05

申请号：US18160244

申请日：2023-01-26

Applicant: Envisics Ltd

Inventor： Jamieson Christmas ,  Ahsan Memon ,  Timothy Smeeton

IPC: G03H1/30

CPC classification number: G03H1/30 ,  G03H2001/303 ,  G03H2226/02

Abstract: A method of projecting a first image and a second image using one multi-wavelength hologram. The first image is different to the second image. The multi-wavelength hologram is arranged for illumination by light of a first wavelength to project the first image. The multi-wavelength hologram is further arranged for illumination by light of a second, shorter wavelength to project the second image.

公开(公告)号：US11686666B2

公开(公告)日：2023-06-27

申请号：US17047651

申请日：2019-12-18

Applicant: Shanghai University

Inventor： Wenjing Zhou ,  Guangcai Huang ,  Yingjie Yu ,  Shili Liu ,  Hongxia Shen

IPC: G01N21/17 ,  G03H3/00 ,  G03H1/04 ,  G03H1/00

CPC classification number: G01N21/1702 ,  G03H1/0005 ,  G03H1/0443 ,  G03H3/00 ,  G01N2021/1706 ,  G01N2201/0636 ,  G03H2001/005 ,  G03H2210/55 ,  G03H2223/24 ,  G03H2226/02 ,  G03H2226/11

Abstract: The present invention discloses a method for detecting a microstructure of a functionally graded material based on digital acousto-optic holography, including the following steps: excite a sample with an ultrasonic wave; record a light wave; form a single tomographic acousto-optic hologram; perform numerical reconstruction of phase information, and perform global detection. The present invention uses an acoustic-optic modulation device to modulate a laser light source of a laser of a laser device to form two light waves of different frequencies. The two light waves each constitute a Mach-Zehnder interference system to record reflection wave information and transmission wave information of an ultrasound, and are finally combined and recorded in the same hologram to form the single tomographic acousto-optic hologram.

公开(公告)号：US20190219889A1

公开(公告)日：2019-07-18

申请号：US16239286

申请日：2019-01-03

Applicant: Thomas Swan & Co. Ltd.

Inventor： Melanie Holmes

IPC: G02F1/313 ,  G02B26/06 ,  G02B5/32 ,  G02B6/26 ,  G02B6/293 ,  G02B6/35 ,  G02F1/31 ,  G03H1/00 ,  G03H1/08 ,  G03H1/22 ,  H04J14/02 ,  H04J14/08 ,  H04Q11/00 ,  G02F1/13 ,  G03H1/26 ,  G03H1/04 ,  G02F1/01 ,  G02F1/1335 ,  G02F1/29 ,  G02B26/08 ,  G03H1/02

CPC classification number: G02F1/3132 ,  G02B5/32 ,  G02B6/266 ,  G02B6/29311 ,  G02B6/29314 ,  G02B6/2938 ,  G02B6/29391 ,  G02B6/3512 ,  G02B6/3534 ,  G02B6/3548 ,  G02B6/3556 ,  G02B26/06 ,  G02B26/0808 ,  G02B26/0833 ,  G02F1/01 ,  G02F1/1326 ,  G02F1/13342 ,  G02F1/1335 ,  G02F1/29 ,  G02F1/31 ,  G02F2001/291 ,  G02F2201/30 ,  G02F2201/34 ,  G02F2203/12 ,  G02F2203/28 ,  G02F2203/50 ,  G03H1/0005 ,  G03H1/02 ,  G03H1/04 ,  G03H1/08 ,  G03H1/0866 ,  G03H1/0891 ,  G03H1/2286 ,  G03H1/2294 ,  G03H1/26 ,  G03H2001/0224 ,  G03H2001/0491 ,  G03H2001/261 ,  G03H2001/264 ,  G03H2222/13 ,  G03H2222/32 ,  G03H2223/23 ,  G03H2225/32 ,  G03H2225/52 ,  G03H2225/60 ,  G03H2226/02 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/022 ,  H04J14/08 ,  H04Q11/0005 ,  H04Q2011/0016 ,  H04Q2011/0028 ,  H04Q2011/0039

Abstract: A modular routing node includes a single input port and a plurality of output ports. The modular routing node is arranged to produce a plurality of different deflections and uses small adjustments to compensate for wavelength differences and alignment tolerances in an optical system. An optical device is arranged to receive a multiplex of many optical signals at different wavelengths, to separate the optical signals into at least two groups, and to process at least one of the groups adaptively.

公开(公告)号：US20180321894A1

公开(公告)日：2018-11-08

申请号：US15586721

申请日：2017-05-04

Applicant: Microsoft Technology Licensing, LLC

Inventor： Jonathan Gustav PAULOVICH ,  John COPIC ,  Karim Audrey LUCCIN ,  Haley Nicole EISENSHTADT

IPC: G06F3/14 ,  G06T19/00 ,  G06F3/01 ,  G03H1/22 ,  G02B27/01

CPC classification number: G06F3/1454 ,  G02B27/017 ,  G02B27/0172 ,  G02B2027/0138 ,  G02B2027/0141 ,  G02B2027/0174 ,  G03H1/2249 ,  G03H2001/2252 ,  G03H2226/02 ,  G03H2226/04 ,  G03H2226/05 ,  G06F3/012 ,  G06F3/013 ,  G06F3/04815 ,  G06F3/1423 ,  G06T19/006

Abstract: Methods, computing devices and display devices are disclosed for displaying virtual content at a target location that is determined relative to a shared anchor. Image data of a physical environment may be captured. A shared anchor tag may be identified in the image data. Based on identifying the shared anchor tag, shared anchor tag image data may be transmitted to a server. Based at least on data retrieved by the server, a data packet comprising a shared anchor associated with a second display device is received, wherein the shared anchor defines a three-dimensional location in the physical environment. A hologram is displayed at a target location determined relative to the location of the shared anchor.

公开(公告)号：US20180292783A1

公开(公告)日：2018-10-11

申请号：US15480334

申请日：2017-04-05

Applicant: Vadim Rakhovsky ,  Mikhail Borisov ,  Aleksey Shamaev ,  Dmitry Chelyubeev ,  Vitaly Chernik ,  Peter Mikheev

Inventor： Vadim Rakhovsky ,  Mikhail Borisov ,  Aleksey Shamaev ,  Dmitry Chelyubeev ,  Vitaly Chernik ,  Peter Mikheev

IPC: G03H1/00 ,  G03H1/22 ,  G02B5/32 ,  G03H1/04 ,  G03H1/08 ,  G03F7/20

CPC classification number: G03H1/0005 ,  G02B5/32 ,  G03F7/702 ,  G03F7/70233 ,  G03F7/70408 ,  G03H1/0486 ,  G03H1/0891 ,  G03H1/2205 ,  G03H1/2294 ,  G03H2001/0094 ,  G03H2001/221 ,  G03H2222/23 ,  G03H2222/52 ,  G03H2223/24 ,  G03H2226/02

Abstract: A system for generating a lithographic image contains a a light source that emits a diverging light beam and a reflective concave curvilinear surface onto which the diverging light beam falls and which reflects the diverging beam in the form of a converging beam. A digital hologram, which is placed into a diverging beam between the light source and the reflective surface, is coded in accordance with the lithographic image either preliminarily or dynamically, with the use of a spatial light modulator. From the curvilinear surface the spatially modulated beam is reflected in the form of a converging beam which falls onto an image-receiving substrate that is located in the image restoration plane and on which the lithographic image is generated.

公开(公告)号：US09946224B2

公开(公告)日：2018-04-17

申请号：US15148142

申请日：2016-05-06

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Bo Kroll ,  Robert Missbach ,  Alexander Schwerdtner

IPC: G03H1/00 ,  G03H1/02 ,  G03H1/08 ,  G03H1/26 ,  G03H1/22 ,  G02B26/08 ,  G06F3/01 ,  G03H1/04 ,  G09G3/20 ,  G03H1/32

CPC classification number: G03H1/0443 ,  G02B26/0875 ,  G03H1/0005 ,  G03H1/02 ,  G03H1/08 ,  G03H1/0808 ,  G03H1/2205 ,  G03H1/2294 ,  G03H1/268 ,  G03H1/32 ,  G03H2001/0088 ,  G03H2001/0216 ,  G03H2001/0224 ,  G03H2001/0833 ,  G03H2001/2242 ,  G03H2001/2271 ,  G03H2001/2625 ,  G03H2210/30 ,  G03H2210/36 ,  G03H2210/44 ,  G03H2222/20 ,  G03H2222/22 ,  G03H2222/24 ,  G03H2223/18 ,  G03H2223/19 ,  G03H2225/22 ,  G03H2225/55 ,  G03H2226/02 ,  G03H2226/04 ,  G03H2226/05 ,  G06F3/013 ,  G09G3/20 ,  G09G2300/026 ,  G09G2300/0408 ,  G09G2300/0809

Abstract: Disclosed is a holographic display including a spatial light modulator (SLM) with pixels, the SLM pixels being on a substrate, the SLM including circuitry which is on the same substrate as the SLM pixels, the circuitry operable to perform calculations which provide an encoding of the SLM.