公开(公告)号：US20240354907A1

公开(公告)日：2024-10-24

申请号：US18637317

申请日：2024-04-16

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Aydogan Ozcan ,  Hanlong Chen ,  Luzhe Huang

IPC: G06T5/60 ,  G03H1/00 ,  G03H1/26 ,  G06T5/50 ,  G06T5/73

CPC classification number: G06T5/60 ,  G03H1/0005 ,  G03H1/26 ,  G06T5/50 ,  G06T5/73 ,  G03H2001/005 ,  G03H2210/55 ,  G03H2226/02 ,  G03H2227/03 ,  G06T2207/10056 ,  G06T2207/20021 ,  G06T2207/20081 ,  G06T2207/20084 ,  G06T2207/30024

Abstract: A deep learning framework, termed Fourier Imager Network (FIN) is disclosed that can perform end-to-end phase recovery and image reconstruction from raw holograms of new types of samples, exhibiting success in external generalization. The FIN architecture is based on spatial Fourier transform modules with the deep neural network that process the spatial frequencies of its inputs using learnable filters and a global receptive field. FIN exhibits superior generalization to new types of samples, while also being much faster in its image inference speed, completing the hologram reconstruction task in ˜0.04 s per 1 mm2 of the sample area. Beyond holographic microscopy and quantitative phase imaging applications, FIN and the underlying neural network architecture may open up various new opportunities to design broadly generalizable deep learning models in computational imaging and machine vision fields.

公开(公告)号：US20240264345A1

公开(公告)日：2024-08-08

申请号：US18640760

申请日：2024-04-19

Applicant: Essilor International

Inventor： Aude BOUCHIER ,  Claudine BIVER

IPC: G02B5/20 ,  G03H1/04 ,  G03H1/22 ,  G03H1/26

CPC classification number: G02B5/203 ,  G03H1/0408 ,  G03H1/26 ,  G03H2001/2226 ,  G03H2260/10 ,  G03H2260/12 ,  G03H2270/21 ,  G03H2270/55

Abstract: An optical article including a substrate, and a holographic waveguide covering at least part of the substrate and including two main surfaces, at least one of them conforming to a surface of the substrate, and at least first and second zones that are configured so that light incoming on one of the first and second zones is at least partially guided towards the other of the first and second zones.

公开(公告)号：US20240061376A1

公开(公告)日：2024-02-22

申请号：US18279265

申请日：2022-01-03

Applicant: POSTECH

Inventor： Jun Suk RHO ,  In Ki Kim ,  Won Sik Kim ,  Yong Ki KIM ,  Jae Hyuck JANG

IPC: G03H1/26 ,  G03H1/08 ,  G03H1/16

CPC classification number: G03H1/26 ,  G03H1/0891 ,  G03H1/16 ,  G03H2001/0212

Abstract: This disclosure relates to a stimulus-responsive dynamic meta-holographic device. According to an aspect of the disclosure, a stimulus-responsive dynamic meta-holographic device can be provided, which includes a metasurface in which a plurality of nanostructures are provided; wherein in the metasurface is provided a liquid crystal layer comprising a plurality of cells that may be altered in arrangements by outer stimulus, wherein the liquid crystal layer, is configured to alter the polarization state of the transmitted beam penetrating the liquid crystal layer as the arrangements of the cells are altered by outer stimulus.

公开(公告)号：US11874631B2

公开(公告)日：2024-01-16

申请号：US17119709

申请日：2020-12-11

Applicant: Envisics Ltd

Inventor： Jamieson Christmas ,  Michal Wengierow

IPC: G03H1/30 ,  G02B27/01 ,  G03H1/22 ,  G03H1/26 ,  G06T7/33 ,  G06T5/00 ,  G03H1/08

CPC classification number: G03H1/30 ,  G02B27/01 ,  G02B27/0103 ,  G02B27/0172 ,  G03H1/22 ,  G03H1/2205 ,  G03H1/2286 ,  G03H1/2294 ,  G03H1/26 ,  G06T5/006 ,  G06T7/33 ,  G02B2027/0112 ,  G03H2001/0825 ,  G03H2001/2218 ,  G03H2001/2244 ,  G03H2001/2263 ,  G03H2001/2297 ,  G03H2001/303 ,  G03H2222/18 ,  G03H2223/55 ,  G03H2225/22 ,  G03H2225/23 ,  G03H2225/61 ,  G03H2226/02 ,  G03H2250/38 ,  G06T2207/10024

Abstract: A method of holographic projection includes projecting at least one calibration image. The method includes performing the following steps for each calibration image in order to determine a plurality of displacements vectors at a respective plurality of different locations on the replay plane: projecting the calibration image onto the replay plane using a first colour holographic channel by displaying a first hologram on a first spatial light modulator and illuminating the first spatial light modulator with light of the first colour; projecting the calibration image onto the replay using a second colour holographic channel by displaying a second hologram on a second spatial light modulator and illuminating the second spatial light modulator with light of the second colour, the first and second hologram corresponding to the calibration image; determining the displacement vector between the light spot formed by the first colour holographic channel and the light spot formed by the second colour holographic channel; and pre-processing an image for projection using the second colour holographic channel in accordance with the plurality of determined displacement vectors.

公开(公告)号：US20190250563A1

公开(公告)日：2019-08-15

申请号：US16276051

申请日：2019-02-14

Applicant: North Inc.

Inventor： Robin W. Tsen

IPC: G03H1/26 ,  G03H1/02 ,  G02B27/01

CPC classification number: G03H1/26 ,  G02B27/0172 ,  G02B2027/0174 ,  G02B2027/0178 ,  G03H1/0236

Abstract: Systems, devices, and methods for side lobe control in holograms are described. The magnitude of the side lobes of a hologram depends on the distribution of refractive index modulation (Δn), therefore control of side lobe magnitude may be achieved by controlling the distribution of Δn. The distribution of Δn may be controlled by replicating a hologram from a master with two reference beams, where the wavelength and angle of each reference beam, the playback angle of the master hologram, and the thickness of the master hologram, the copy holographic recording medium (HRM), and the recording substrate are carefully chosen to achieve a pattern of meta-interference within the HRM that matches the desired distribution of Δn.

公开(公告)号：US20180307048A1

公开(公告)日：2018-10-25

申请号：US15957449

申请日：2018-04-19

Applicant: THALMIC LABS INC.

Inventor： Stefan Alexander ,  Liang Yuan

IPC: G02B27/01 ,  G03H1/02 ,  G03H1/22

CPC classification number: G02B27/0172 ,  B29D11/00009 ,  B29D11/0073 ,  G02B2027/0105 ,  G02B2027/013 ,  G02B2027/0174 ,  G02B2027/0178 ,  G03H1/0236 ,  G03H1/0248 ,  G03H1/0252 ,  G03H1/0272 ,  G03H1/182 ,  G03H1/2202 ,  G03H1/2286 ,  G03H1/26 ,  G03H2001/0212 ,  G03H2001/0224 ,  G03H2001/0264 ,  G03H2001/0439 ,  G03H2001/2231 ,  G03H2001/2292 ,  G03H2001/2615 ,  G03H2222/12 ,  G03H2222/16 ,  G03H2222/18 ,  G03H2225/52 ,  G03H2240/54 ,  G03H2250/10 ,  G03H2260/12 ,  G03H2270/21 ,  G03H2270/55

Abstract: Systems, devices, and methods for holographic optical elements are described. A holographic optical element includes a first layer of holographic material and a second layer of holographic material. The first layer of holographic material includes a first hologram responsive to light in a first waveband and a second hologram responsive to light in a second waveband. The second layer of holographic material includes a third hologram responsive to light in a third waveband and may include a fourth hologram responsive to light in a fourth waveband. The first, second, third, and fourth wavebands are distinct and may comprise light of red, blue, green, and infrared wavelengths, respectively. Distribution of the three or four holograms on two layers of holographic material allows each hologram to have an index modulation of greater than 0.016, a diffraction efficiency of greater than 15%, and an angular bandwidth of greater than 12°.

公开(公告)号：US09940966B2

公开(公告)日：2018-04-10

申请号：US15101239

申请日：2013-12-04

Applicant: Hitachi Consumer Electronics Co., Ltd.

Inventor： Makoto Hosaka ,  Shinji Fujita

IPC: G11B7/0065 ,  G11B7/1353 ,  G03H1/26 ,  G11B7/005 ,  G11B7/1381 ,  G11B7/1374

CPC classification number: G11B7/1353 ,  G03H1/26 ,  G11B7/005 ,  G11B7/0065 ,  G11B7/1374 ,  G11B7/1381

Abstract: Provided are an optical information reproduction device and a method therefor with which the influence of reference light reflected from the surface of a disk can be reduced, thereby enabling data to be reproduced in a stable manner in an optical information reproduction device that uses holography. The information reproduction device, which reproduces from a recording medium information that has been recorded on the recording medium by the formation of a hologram, is equipped with: a light output unit that emits laser light; an optical system that generates reference light from the laser light emitted from the light output unit; an objective lens that reproduction signal light reproduced by the reference light with which the recording medium has been irradiated enters; a light detector that receives the reproduction signal light propagated by the objective lens; a medium-reflected light reduction unit that reduces the amount of medium-reflected light (generated when the recording medium reflects the reference light) with which the light detector is irradiated; and a control unit that controls the operation of the information reproduction device.

公开(公告)号：US20170278140A1

公开(公告)日：2017-09-28

申请号：US15135820

申请日：2016-04-22

Applicant: John Paul DUFFY

Inventor： John Paul DUFFY

IPC: G06Q30/02

CPC classification number: G06Q30/0269 ,  G02B27/2292 ,  G03H1/0005 ,  G03H1/08 ,  G03H1/0891 ,  G03H1/2249 ,  G03H1/26 ,  G03H2001/0061 ,  G03H2001/0088 ,  G03H2001/2284 ,  G03H2210/62 ,  G03H2226/02 ,  G03H2226/04 ,  G03H2226/05 ,  H04N7/183 ,  H04N13/366 ,  H04N13/395 ,  H04N21/816

Abstract: A three-dimensional image simulation device for managing a live event comprising an image capturing device for capturing live captured data corresponding to a presenter and generating, in real-time, hologram data based on the live captured data. An output interface for broadcasting the hologram data in real-time to at least one additional location containing an audience, wherein the hologram data is used to create a hologram of the presenter at the at least one additional location based on an apparent parallax effect in a simulated three-dimensional display device, the hologram creating a three-dimensional illusion for the audience regarding actual presence of the presenter at the at least one additional location. Furthermore, an input interface for receiving audience data from the at least one additional location regarding interaction between the hologram and the audience and a display device for displaying images based on audience data to the presenter.

公开(公告)号：US09684168B2

公开(公告)日：2017-06-20

申请号：US14091618

申请日：2013-11-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Fred W. Huntzicker ,  James N. Nickolaou

IPC: G02B27/01 ,  G03H1/26 ,  G02B26/00

CPC classification number: G02B27/0103 ,  G02B26/00 ,  G02B2027/0105 ,  G03H1/26 ,  G03H2001/262 ,  G03H2001/2655 ,  G03H2227/03

Abstract: An apparatus for generating and displaying a projected digital image includes an actuator, a holographic encoded medium with a holographic pattern, a light source, and a controller. The holographic encoded medium is disposed in operable communication with the actuator. The light source is configured to produce a coherent light disposed in optical communication with the holographic encoded medium. The controller is operable to control synchronization of the coherent light from the light source with a position of the holographic encoded medium as driven by the actuator to produce the projected digital image on a projection surface based on directing the coherent light to different portions of the holographic pattern at different times.

公开(公告)号：US09665065B2

公开(公告)日：2017-05-30

申请号：US13604940

申请日：2012-09-06

Applicant: Rigel Quinn Woida-O'Brien

Inventor： Rigel Quinn Woida-O'Brien

IPC: G03H1/08 ,  G02B5/32 ,  G03H1/00 ,  G03H1/22 ,  F41G3/32 ,  F41J2/02 ,  G03H1/26 ,  G03H1/02

CPC classification number: G03H1/0005 ,  F41G3/323 ,  F41J2/02 ,  G03H1/0244 ,  G03H1/08 ,  G03H1/22 ,  G03H1/2286 ,  G03H1/26 ,  G03H2001/2234 ,  G03H2001/262 ,  G03H2001/266 ,  G03H2210/20 ,  G03H2222/16 ,  G03H2222/34 ,  G03H2260/14

Abstract: Systems and methods for infrared laser holographic projection. In one example, an optical apparatus includes a first laser source configured to generate a first laser beam having a first wavelength in an infrared spectral range and a holographic medium optically coupled to the laser source and having a transmittance range including the first wavelength. A diffraction pattern formed in the holographic medium encodes an input image and is configured to diffract the first laser beam responsive to being illuminated by the laser beam so as to construct an image in the infrared spectrum, the image being a reconstruction of the input image. The diffraction pattern may further be configured to diffract a second laser beam having a second wavelength in a visible spectral range to construct an image including a first portion in the infrared spectral range and a second portion in the visible spectral range.