公开(公告)号：US11002898B2

公开(公告)日：2021-05-11

申请号：US16657337

申请日：2019-10-18

Applicant: Facebook Technologies, LLC

Inventor： Fenglin Peng ,  Ying Geng ,  Yusufu Njoni Bamaxam Sulai ,  Mengfei Wang ,  Lu Lu ,  Jacques Gollier

IPC: G02B5/30 ,  G02B27/01 ,  G02F1/1335 ,  G02F1/137 ,  G02B27/09 ,  G02F1/13363 ,  G02B5/32

Abstract: Disclosed herein are techniques for displaying images on multiple image planes in a near-eye display system. A switchable optical device includes a first polarizer configurable to polarize incident light into light of a first circular polarization state, and a second polarizer configurable to transmit light of a second circular polarization state and reflect light of the first circular polarization state into light of the first circular polarization state. The switchable optical device also includes a partial reflector positioned between the first polarizer and the second polarizer. The partial reflector is configured to transmit light from the first polarizer and reflect light from the second polarizer, where the reflected light and the light from the second polarizer have different polarization states. At least one of the first polarizer or the second polarizer includes a cholesteric liquid crystal (CLC) circular polarizer that is switchable by a voltage signal.

公开(公告)号：US10983354B2

公开(公告)日：2021-04-20

申请号：US16736712

申请日：2020-01-07

Applicant: Facebook Technologies, LLC

Inventor： Douglas Robert Lanman ,  William Aaron Nicholls ,  Marina Zannoli ,  Kevin James MacKenzie ,  James Hillis ,  Yusufu Njoni Bamaxam Sulai ,  Olivier Mercier

IPC: G06F3/01 ,  G02B27/01 ,  G02B7/04

Abstract: A multiplanar head mounted display (HMD) includes two or more artificial display planes for each eye located at optical distances that can be dynamically adjusted based on a location within a scene presented by the HMD that the user views. For example, a scene is presented on two or more electronic display elements (e.g., screens) of the HMD. A focal length of an optics block that directs image light from the electronic display elements towards the eyes of a user is adjusted using a varifocal system (e.g., an element that mechanically changes a distance between a lens system in the optics block and the electronic display element, an element that changes shape of one or more lenses in the lens system in the optics block, etc.) based on a location or object within the scene where the user is looking.

公开(公告)号：US10772494B1

公开(公告)日：2020-09-15

申请号：US16014415

申请日：2018-06-21

Applicant: Facebook Technologies, LLC

Inventor： Robert Konrad ,  Marina Zannoli ,  Douglas Robert Lanman ,  Kavitha Ratnam ,  Yusufu Njoni Bamaxam Sulai

IPC: A61B3/00 ,  A61B3/103 ,  A61B3/113 ,  A61B3/10 ,  A61B3/14

Abstract: The disclosed system may include (1) a light source that generates light for an image, (2) an optical subsystem that (a) receives the generated light from the light source, and (b) generates, based on the received light, converging light defining an exit pupil that includes the image, where the exit pupil is smaller than a pupil of an eye of a viewer, and (3) a control subsystem that controls at least one of the light source or the optical subsystem to reduce aberration of the image that is caused by the eye of the viewer. Various other methods, systems, and computer-readable media are also disclosed.

公开(公告)号：US10698218B1

公开(公告)日：2020-06-30

申请号：US15914973

申请日：2018-03-07

Applicant: Facebook Technologies, LLC

Inventor： Ying Geng ,  Yusufu Njoni Bamaxam Sulai ,  Jacques Gollier ,  Brian Wheelwright

IPC: G02B27/00 ,  G02B27/01

Abstract: A head-mounted display (HMD) contains an oscillating electronic display, an optics block, a controller, and an optional eye tracking system. The oscillating electronic display vibrates according to instructions in a manner that allows it to correct optical errors, including vergence-accommodation conflict, field curvature, fixed pattern noise, and chromatic aberration. The oscillating electronic display is configured to emit image light by oscillating through different positions along an optical axis. The optics block is configured to direct the emitted image light to an eyebox. The controller is configured to determine and provide instructions to the oscillating electronic display. These instructions include instructions specifying the amplitude and frequency of vibration as well as instructions specifying a plurality of specific sub-pixels on the display surface to activate. The eye tracking system provides eye tracking information to the controller.

公开(公告)号：US10609364B2

公开(公告)日：2020-03-31

申请号：US16026837

申请日：2018-07-03

Applicant: Facebook Technologies, LLC

Inventor： Ying Geng ,  Yusufu Njoni Bamaxam Sulai ,  Jacques Gollier ,  Brant Carlton Lewis ,  Brian Wheelwright

IPC: H04N13/344 ,  G02B27/01

Abstract: A lens for a head mounted display is configured for directing and collimating image light from pixels of an electronic display to a pupil of a user's eye to lessen a pupil swim effect. A method of configuring a lens for directing and collimating image light from an electronic display to a pupil of a user's eye includes configuring the lens to lessen a difference between observed distortions of imagery displayed by the electronic display at different gaze angles of the user's eye.

公开(公告)号：US10606349B1

公开(公告)日：2020-03-31

申请号：US16015605

申请日：2018-06-22

Applicant: Facebook Technologies, LLC

Inventor： Andrew John Ouderkirk ,  Jacques Gollier ,  Robin Sharma ,  Yusufu Njoni Bamaxam Sulai ,  Brian Wheelwright ,  Ying Geng ,  Alexander Sohn ,  Abbas Mehdi Kazmi

IPC: G09G5/00 ,  G06F3/01 ,  G06T7/20 ,  H04N5/33 ,  H04N5/225

Abstract: A backlight device includes a first surface and a second surface that is opposite to the first surface. The backlight device is configured to emit light in a first optical band through the second surface toward a display panel of a head-mounted display (HMD). The display panel is configured to convert the light from the backlight device to image light. The backlight device is transparent to light in a second optical band that is different than the first optical band. An eye tracking system illuminates an eyebox with light in the second optical band. A camera assembly positioned adjacent to the first surface of the backlight device. The camera assembly is configured to capture images of the eye in the second optical band through the backlight device, the display panel. The eye tracking system determines eye tracking information based at least in part on the captured images.

公开(公告)号：US20190353906A1

公开(公告)日：2019-11-21

申请号：US16221319

申请日：2018-12-14

Applicant: FACEBOOK TECHNOLOGIES, LLC

Inventor： Jacques Gollier ,  Brian Wheelwright ,  Scott Charles McEldowney ,  Yusufu Njoni Bamaxam Sulai ,  Babak Amirsolaimani ,  Ying Geng

IPC: G02B27/01 ,  G03H1/02 ,  G02B27/14

Abstract: An optical assembly includes a partial reflector that is optically coupled with a first polarization volume holographic element. The partial reflector is capable of receiving first light having a first circular polarization and transmitting a portion of the first light having a first circular polarization. The first polarization volume holographic element is configured to receive the first portion of the first light and reflect the first portion of the first light as second light having the first circular polarization. The partial reflector is capable of receiving the second light and reflecting a first portion of the second light as third light having a second circular polarization opposite to the first polarization. The first polarization volume holographic element is configured to receive the third light having the second circular polarization and transmit the third light having the second circular polarization.

公开(公告)号：US10466497B1

公开(公告)日：2019-11-05

申请号：US15684675

申请日：2017-08-23

Applicant: Facebook Technologies, LLC

Inventor： Yusufu Njoni Bamaxam Sulai ,  Brian Wheelwright ,  Jacques Gollier ,  Alexander Sohn

IPC: G02B27/14 ,  G06F3/01 ,  G02B27/00 ,  G02B5/30

Abstract: A head-mounted display includes an electronic display configured to output image light, an optics assembly configured to direct image light in a first band from the electronic display to an eye box, an eye tracking unit configured to generate eye tracking information, and a beamsplitter configured to redirect light in a second band reflected from the eye box toward the eye tracking unit and transmit the image light in the first band. The beamsplitter includes a first region and a second region, and a first portion that joins the first region and the second region is curved such that an angle between the first region and the optical axis is larger than an angle between second region and the optical axis, and the beamsplitter is positioned along the optical axis between the optics assembly and the electronic display.

公开(公告)号：US10373294B1

公开(公告)日：2019-08-06

申请号：US15947846

申请日：2018-04-08

Applicant: Facebook Technologies, LLC

Inventor： Austin Wilson ,  Douglas Robert Lanman ,  Nicholas Daniel Trail ,  Scott Charles McEldowney ,  Stephen James McNally ,  Yusufu Njoni Bamaxam Sulai

IPC: G06T11/00 ,  G06T3/40 ,  G06F3/0346 ,  G06T7/12 ,  G06T1/20 ,  G06F3/01

Abstract: A head-mounted display (HMD) divides an image into a high resolution (HR) inset portion at a first resolution, a peripheral portion, and a transitional portion. The peripheral portion is downsampled to a second resolution that is less than the first resolution. The transitional portion is blended such that there is a smooth change in resolution that corresponds to a change in resolution between a fovea region and a non-fovea region of a retina. An inset region is generated using the HR inset portion and the blended transitional portion, and a background region is generated using the downsampled peripheral portion. The inset region is provided to a HR inset display, and the background region is provided to a peripheral display. An optics block combines the displayed inset region with the displayed background region to generate composite content.

公开(公告)号：US20190101767A1

公开(公告)日：2019-04-04

申请号：US15723305

申请日：2017-10-03

Applicant: Facebook Technologies, LLC

Inventor： Ying Geng ,  Yusufu Njoni Bamaxam Sulai ,  Andrew John Ouderkirk ,  Brian Wheelwright ,  Jacques Gollier ,  Alexander Sohn ,  Robin Sharma

IPC: G02B27/14 ,  G02B27/01 ,  G06F3/01

Abstract: A head-mounted device (HMD) comprises a display element, a Fresnel assembly, an illumination source, and a camera assembly. The display element outputs image light in a first band of light through a display surface. The optics block directs light from the display element to a target region (e.g., includes a portion of a user's face, eyes, etc.). The Fresnel assembly transmits light in the first band and directs light in a second band different than the first band to a first position. The source illuminates the target area with light in the second band. The camera is located in the first position and captures light in the second band corresponding to light reflected from the target area that is then reflected by the Fresnel assembly toward the camera. A controller may use the captured light to determine tracking information for areas of a user's face (e.g., eyes).