公开(公告)号：US20240168433A1

公开(公告)日：2024-05-23

申请号：US18105223

申请日：2023-02-02

申请人： Meta Platforms Technologies, LLC

发明人： Changwon Jang ,  Afsoon Jamali ,  Zhimin Shi

IPC分类号： G03H1/22 ,  G02B27/00 ,  G02B27/01 ,  G02F1/1335 ,  G06F1/16

CPC分类号： G03H1/2286 ,  G02B27/0093 ,  G02B27/0172 ,  G02F1/1335 ,  G03H1/2294 ,  G06F1/163 ,  G02B2027/0174 ,  G03H2001/0224 ,  G03H2223/16 ,  G03H2223/23 ,  G03H2223/24 ,  G03H2225/34

摘要： A holographic display includes an illuminator, a spatial light modulator (SLM) coupled to the illuminator, and an ocular lens coupled to the SLM. The illuminator provides a wide-area illuminating light beam to illuminate the SLM with a spatially homogeneous beam of light. The illuminator may include a slab waveguide with an evanescent out-coupler, or a beam expander based on a diffraction grating with an oblique angle of incidence and a near-normal angle of diffraction of the illuminating light. A low-pass spatial filter may be provided to filter out higher diffraction orders of the illuminating light diffracted on the SLM.

公开(公告)号：US20230417962A1

公开(公告)日：2023-12-28

申请号：US17103920

申请日：2020-11-24

申请人： Meta Platforms Technologies, LLC

发明人： Yun-Han LEE ,  Mengfei WANG ,  Stephen CHOI ,  Kieran Connor KELLY ,  Lu LU ,  Kyle Justin CURTS

IPC分类号： G02B5/18 ,  G02B27/28 ,  G03H1/04

CPC分类号： G02B5/1814 ,  G02B27/286 ,  G03H1/0402 ,  G03H2223/23 ,  G03H2227/05 ,  G03H2222/52

摘要： A system includes a surface relief grating configured to forwardly diffract an input beam as two linearly polarized beams. The system also includes a waveplate optically coupled with the surface relief grating and configured to convert the two linearly polarized beams into two circularly polarized beams having orthogonal circular polarizations. The two circularly polarized beams having orthogonal circular polarizations interfere with one another to generate a polarization interference pattern.

公开(公告)号：US11822110B2

公开(公告)日：2023-11-21

申请号：US16971464

申请日：2018-07-19

申请人： University of Utah Research Foundation

发明人： Rajesh Menon

IPC分类号： G02B5/32 ,  G02B27/42 ,  G03H1/22 ,  G03H1/26

CPC分类号： G02B5/32 ,  G02B27/4205 ,  G03H1/2286 ,  G03H1/2294 ,  G03H1/265 ,  G03H2001/266 ,  G03H2210/30 ,  G03H2222/14 ,  G03H2222/16 ,  G03H2223/19 ,  G03H2223/23 ,  G03H2240/54

摘要： Technology is described for methods and systems for a diffractive optic device (525) for holographic projection. The diffractive optic device can include a lens (535) configured to convey a hologram. The lens (535) further comprises a patterned material (510) formed with an array of cells having a non-planar arrangement of cell heights extending from a surface of the patterned material. The lens further optionally comprises a filling material (530) to fill gaps on both surfaces of the patterned material.

公开(公告)号：US20230142054A1

公开(公告)日：2023-05-11

申请号：US18079788

申请日：2022-12-12

申请人： Pacific Light & Hologram, Inc.

发明人： Kamran Qaderi ,  Stephen John Hart ,  Robert Alan Hess ,  Jonathan Seamus Blackley

IPC分类号： G03H1/22 ,  G03H1/00 ,  G02B5/30 ,  G02B27/09 ,  G02B27/30 ,  G02B27/42 ,  H04N13/346 ,  G02B30/10 ,  G02B5/18 ,  G03H1/26 ,  H04N13/30 ,  G02F1/133 ,  G02F1/1335 ,  H04N13/275 ,  G02B30/52 ,  G02B30/40 ,  G02B27/01 ,  G06T19/00

CPC分类号： G03H1/2202 ,  G02B5/1814 ,  G02B5/3025 ,  G02B27/30 ,  G02B27/0103 ,  G02B27/0927 ,  G02B27/4205 ,  G02B30/10 ,  G02B30/40 ,  G02B30/52 ,  G02F1/13306 ,  G02F1/133514 ,  G02F1/133528 ,  G03H1/0005 ,  G03H1/268 ,  G03H1/2205 ,  G03H1/2286 ,  G03H1/2294 ,  G06T19/006 ,  H04N13/30 ,  H04N13/275 ,  H04N13/346 ,  G03H2001/0088 ,  G03H2001/2215 ,  G03H2001/2221 ,  G03H2223/20 ,  G03H2223/22 ,  G03H2223/23 ,  G03H2223/24

摘要： Methods, apparatus, devices, and systems for displaying three-dimensional objects by individually diffracting different colors of light are provided. In one aspect, an optical device includes: a first optically diffractive component including a first diffractive structure configured to diffract a first color of light having a first incident angle at a first diffracted angle, a second optically diffractive component including a second diffractive structure configured to diffract a second color of light having a second incident angle at a second diffracted angle, a first reflective layer configured to totally reflect the first color of light having the first incident angle and transmit the second color of light, and a second reflective layer configured to totally reflect the second color of light having the second incident angle. The first reflective layer is between the first and second diffractive structures, and the second diffractive structure is between the first and second reflective layers.

公开(公告)号：US20190243211A1

公开(公告)日：2019-08-08

申请号：US16388636

申请日：2019-04-18

申请人： Thomas Swan & Co. Ltd.

发明人： Melanie Holmes

IPC分类号： G02F1/313 ,  G02B5/32 ,  G02B26/06 ,  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 ,  G02B6/26

CPC分类号： 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

摘要： 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：US20180129165A1

公开(公告)日：2018-05-10

申请号：US15807199

申请日：2017-11-08

申请人： SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

发明人： Byoungho LEE ,  Youngmo JEONG ,  Gang LI ,  Dukho LEE

IPC分类号： G03H1/22 ,  G03H1/04

CPC分类号： 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

摘要： 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：US20180120563A1

公开(公告)日：2018-05-03

申请号：US15624409

申请日：2017-06-15

申请人： Microsoft Technology Licensing, LLC

发明人： Joel Steven KOLLIN ,  Andrew MAIMONE ,  Steven John ROBBINS ,  Eliezer GLIK ,  Andreas GEORGIOU ,  Xinye LOU

IPC分类号： G02B27/01 ,  G03H1/08 ,  F21V8/00 ,  G03H1/22 ,  G02B5/32

CPC分类号： G02B27/0103 ,  G02B5/32 ,  G02B6/0023 ,  G02B6/0028 ,  G02B27/0172 ,  G02B2027/0118 ,  G02B2027/0125 ,  G02B2027/0174 ,  G03H1/0866 ,  G03H1/2205 ,  G03H1/2249 ,  G03H1/2286 ,  G03H1/2294 ,  G03H2001/2207 ,  G03H2001/2239 ,  G03H2001/2242 ,  G03H2001/2276 ,  G03H2001/2284 ,  G03H2222/31 ,  G03H2223/12 ,  G03H2223/16 ,  G03H2223/23 ,  G03H2225/33 ,  G03H2225/52 ,  G03H2225/60 ,  G03H2227/02 ,  G03H2270/55

摘要： Examples are disclosed that relate to a near-eye display device including a holographic display system. The holographic display system includes a light source configured to emit light that is converging or diverging, a waveguide configured to be positioned in a field of view of a user's eye, and a digital dynamic hologram configured to receive the light, and project the light into the waveguide such that the light propagates through the waveguide.

公开(公告)号：US20180004158A1

公开(公告)日：2018-01-04

申请号：US15704890

申请日：2017-09-14

申请人： CELLOPTIC, INC.

发明人： Joseph ROSEN ,  Gary BROOKER

IPC分类号： G03H1/08 ,  H04N1/00 ,  G03B35/02 ,  G03H1/04 ,  G03H1/06 ,  G03H1/02

CPC分类号： G03H1/0841 ,  G03B35/02 ,  G03H1/0402 ,  G03H1/041 ,  G03H1/0443 ,  G03H1/06 ,  G03H1/08 ,  G03H2001/0224 ,  G03H2001/0436 ,  G03H2001/0452 ,  G03H2001/0458 ,  G03H2001/085 ,  G03H2223/23 ,  G03H2225/33 ,  G03H2240/13 ,  G03H2240/21 ,  G03H2240/23 ,  G03H2240/24 ,  H04N1/00827

摘要： An apparatus and method to produce a hologram of an object includes an electromagnetic radiation assembly configured to receive a received electromagnetic radiation, such as light, from the object. The electromagnetic radiation assembly is further configured to diffract the received electromagnetic radiation and transmit a diffracted electromagnetic radiation. An image capture assembly is configured to capture an image of the diffracted electromagnetic radiation and produce the hologram of the object from the captured image.

公开(公告)号：US20170315362A1

公开(公告)日：2017-11-02

申请号：US15650697

申请日：2017-07-14

申请人： Microsoft Technology Licensing, LLC

发明人： Adrian Travis ,  Joel S. Kollin ,  Andreas Georgiou

IPC分类号： G02B27/01 ,  G06F3/01 ,  G02B26/08 ,  G02C9/00 ,  G03B21/10 ,  G03H1/02 ,  G06F1/16 ,  H04N7/18 ,  G02B5/18 ,  G02B27/00

CPC分类号： G02B27/0172 ,  G02B5/1828 ,  G02B26/0808 ,  G02B27/0093 ,  G02B27/0103 ,  G02B2027/0105 ,  G02B2027/011 ,  G02B2027/0123 ,  G02B2027/013 ,  G02B2027/0174 ,  G02B2027/0178 ,  G02B2027/0187 ,  G02B2027/0194 ,  G02C9/00 ,  G03B21/10 ,  G03H1/0248 ,  G03H1/2205 ,  G03H1/2294 ,  G03H1/265 ,  G03H2223/16 ,  G03H2223/23 ,  G03H2225/32 ,  G06F1/163 ,  G06F3/013 ,  H04N7/183

摘要： A display includes a projector configured to provide light of a virtual image, a waveguide into which the light of the virtual image is injected at an injection angle by the projector, and a combiner disposed along the waveguide and configured to redirect the light of the virtual image. The waveguide is configured to emit the light at a point established by the injection angle. The combiner is further configured to allow ambient light from beyond the waveguide to pass through the combiner. The waveguide constrains the light of the virtual image through total internal reflection along a curved path for the light between the projector and the combiner.

公开(公告)号：US20170205767A1

公开(公告)日：2017-07-20

申请号：US15475657

申请日：2017-03-31

申请人： CELLOPTIC, INC.

发明人： Joseph ROSEN

IPC分类号： G03H1/26 ,  G03H5/00 ,  G03H1/04

CPC分类号： G03H1/26 ,  G03H1/0005 ,  G03H1/041 ,  G03H1/0443 ,  G03H1/06 ,  G03H1/08 ,  G03H5/00 ,  G03H2001/0033 ,  G03H2001/0452 ,  G03H2210/33 ,  G03H2223/23 ,  G03H2226/11

摘要： An apparatus and method to produce a hologram of a cross-section of an object includes an electromagnetic radiation assembly configured to receive a received electromagnetic radiation, such as light, from the object. The electromagnetic radiation assembly is further configured to diffract the received electromagnetic radiation and transmit a diffracted electromagnetic radiation. An image capture assembly is configured to capture an image of the diffracted electromagnetic radiation and produce the hologram of the cross-section of the object from the captured image. The hologram of the cross-section includes information regarding a single cross-section of the object.