公开(公告)号：US10955605B1

公开(公告)日：2021-03-23

申请号：US15963304

申请日：2018-04-26

Applicant: Facebook Technologies, LLC

Inventor： Maxwell Parsons ,  Giuseppe Calafiore ,  Wanli Chi

IPC: G02B27/01 ,  F21V8/00 ,  B32B7/12 ,  B32B27/06 ,  B32B37/12 ,  B32B37/18 ,  B32B37/15 ,  B32B38/00

Abstract: A waveguide includes an input area, a multi-layered substrate, and an output area. The multi-layered substrate includes a plurality of layers of at least a substrate and at least one partially reflective layers. The input area in-couples light in a first band into the waveguide. The one or more partially reflective layers are partially reflective to light in the first band. Each of the one or more partially reflective layers are located between respective layers of the plurality of layers of the substrate. The output area out-couples light from the waveguide. The pupil replication density of the out-coupled light is based in part on a number of the one or more partially reflective layers and respective locations of the one or more partially reflective layers in the waveguide.

公开(公告)号：US10942378B2

公开(公告)日：2021-03-09

申请号：US16890607

申请日：2020-06-02

Applicant: Facebook Technologies, LLC

Inventor： Andrew Maimone ,  Andrew Ouderkirk ,  Hee Yoon Lee ,  Ningfeng Huang ,  Maxwell Parsons ,  Scott Charles McEldowney ,  Babak Amirsolaimani ,  Pasi Saarikko ,  Wanli Chi ,  Giuseppe Calafiore ,  Alexander Koshelev ,  Barry David Silverstein ,  Lu Lu ,  Wai Sze Tiffany Lam ,  Gang Li ,  Stephan Lutgen ,  Francois Olivier ,  David Massoubre

IPC: G02F1/01 ,  G02B27/01 ,  G02F1/065 ,  G02F1/13 ,  G02F1/035

Abstract: A pupil-replicating waveguide suitable for operation with a coherent light source is disclosed. A waveguide body has opposed surfaces for guiding a beam of image light. An out-coupling element is disposed in an optical path of the beam for out-coupling portions of the beam at a plurality of spaced apart locations along the optical path. Electrodes are coupled to at least a portion of the waveguide body for modulating an optical path length of the optical path of the beam to create time-varying phase delays between the portions of the beam out-coupled by the out-coupling element.

公开(公告)号：US10598940B2

公开(公告)日：2020-03-24

申请号：US16385134

申请日：2019-04-16

Applicant: Facebook Technologies, LLC

Inventor： Maxwell Parsons

IPC: G02B27/01 ,  G02B26/10 ,  G02B26/08 ,  G02B27/09 ,  G02B27/14 ,  G09G3/02 ,  G09G3/34 ,  G09G3/00

Abstract: A source assembly for providing light. The source assembly comprises a source element array, and a scanning mirror assembly. The source element array includes a super luminous diode (SLED) array of SLEDs that are configured to emit light. The SLED array is on a single chip. Each SLED in the SLED array may emit light in the same color channel (e.g., green). There may be multiple SLED arrays that each are on respective chips and each are associated with a different color channel (e.g., one is red, one is blue, and one is green). The scanning mirror assembly is configured to scan light emitted from the SLED array (and/or multiple SLED arrays) to an entrance location of an output waveguide (e.g., of a waveguide display) as scanned image light.

公开(公告)号：US20190285898A1

公开(公告)日：2019-09-19

申请号：US16385134

申请日：2019-04-16

Applicant: Facebook Technologies, LLC

Inventor： Maxwell Parsons

IPC: G02B27/01 ,  G02B27/14 ,  G02B27/09 ,  G02B26/10 ,  G09G3/34 ,  G02B26/08 ,  G09G3/02

Abstract: A source assembly for providing light. The source assembly comprises a source element array, and a scanning mirror assembly. The source element array includes a super luminous diode (SLED) array of SLEDs that are configured to emit light. The SLED array is on a single chip. Each SLED in the SLED array may emit light in the same color channel (e.g., green). There may be multiple SLED arrays that each are on respective chips and each are associated with a different color channel (e.g., one is red, one is blue, and one is green). The scanning mirror assembly is configured to scan light emitted from the SLED array (and/or multiple SLED arrays) to an entrance location of an output waveguide (e.g., of a waveguide display) as scanned image light.

公开(公告)号：US10168537B1

公开(公告)日：2019-01-01

申请号：US15996427

申请日：2018-06-01

Applicant: Facebook Technologies, LLC

Inventor： Maxwell Parsons

IPC: G02B27/01 ,  G02B26/10 ,  G02B26/08 ,  G02B27/09 ,  G02B27/14 ,  G09G3/02 ,  G09G3/34

Abstract: A source assembly for providing light. The source assembly comprises a source element array, and a scanning mirror assembly. The source element array includes a super luminous diode (SLED) array of SLEDs that are configured to emit light. The SLED array is on a single chip. Each SLED in the SLED array may emit light in the same color channel (e.g., green). There may be multiple SLED arrays that each are on respective chips and each are associated with a different color channel (e.g., one is red, one is blue, and one is green). The scanning mirror assembly is configured to scan light emitted from the SLED array (and/or multiple SLED arrays) to an entrance location of an output waveguide (e.g., of a waveguide display) as scanned image light.