公开(公告)号：US12147596B1

公开(公告)日：2024-11-19

申请号：US17896679

申请日：2022-08-26

Applicant: Meta Platforms Technologies, LLC

Inventor： Qing Chao ,  Robert Dale Cavin ,  Guillaume Lestoquoy ,  Mohammadhossein Daraeihajitooei ,  Xinqiao Liu ,  Raffaele Capoccia ,  Sascha Hallstein ,  Ziyun Li

IPC: G06F3/01 ,  G06T7/73 ,  G06V10/25 ,  G06V10/60 ,  G06V40/18 ,  H04N5/33

Abstract: An eyebox region is illuminated with a fringe illumination pattern. An event sensor is configured to generate event-signals. Eye motion is determined from the event-signals. Eye-features are extracted from data generated by the event sensors and a predicted gaze vector is generated from the eye-features.

公开(公告)号：US11924396B2

公开(公告)日：2024-03-05

申请号：US17579279

申请日：2022-01-19

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Michael Hall ,  Qing Chao ,  Byron Taylor ,  Xinqiao Liu

IPC: H04N13/271 ,  G01S17/89 ,  G02B26/08 ,  G02B27/01 ,  G02F1/1347 ,  G02F1/139 ,  G02F1/29 ,  G02F1/33 ,  G06F3/03 ,  G06T7/521 ,  H04N13/207 ,  H04N13/344 ,  H04N13/383 ,  G02B26/00

CPC classification number: H04N13/271 ,  G01S17/89 ,  G02B26/08 ,  G02B26/0808 ,  G02B27/0101 ,  G02B27/017 ,  G02F1/13471 ,  G02F1/1393 ,  G02F1/292 ,  G02F1/33 ,  G06F3/0325 ,  G06T7/521 ,  H04N13/207 ,  H04N13/344 ,  H04N13/383 ,  G02B26/004 ,  G02B2027/0138 ,  G02B2027/014 ,  G02F2201/305

Abstract: A depth camera assembly (DCA) for depth sensing of a local area. The DCA includes a transmitter, a receiver, and a controller. The transmitter illuminates a local area with outgoing light in accordance with emission instructions. The transmitter includes a fine steering element and a coarse steering element. The fine steering element deflects one or more optical beams at a first deflection angle to generate one or more first order deflected scanning beams. The coarse steering element deflects the one or more first order deflected scanning beams at a second deflection angle to generate the outgoing light projected into the local area. The receiver captures one or more images of the local area including portions of the outgoing light reflected from the local area. The controller determines depth information for one or more objects in the local area based in part on the captured one or more images.

公开(公告)号：US11716548B2

公开(公告)日：2023-08-01

申请号：US16298278

申请日：2019-03-11

Applicant: Meta Platforms Technologies, LLC

Inventor： Michael Hall ,  Qing Chao

IPC: H04N25/53 ,  G01S17/89 ,  G02B27/01 ,  G01S7/4861 ,  H04N25/771 ,  H04N13/207

CPC classification number: H04N25/53 ,  G01S7/4861 ,  G01S17/89 ,  G02B27/017 ,  H04N25/771 ,  H04N13/207

Abstract: A depth camera assembly (DCA) determines distances between the DCA and objects in a local area within a field of view of the DCA. The DCA projects a series of sinusoidal patterns into the local area DCA and captures images of the sinusoidal patterns via a sensor. Each pixel of the augmented sensor includes a plurality of charge bins, and charge accumulated by a photodiode of a pixel during different time intervals (e.g., times when different sinusoidal patterns are emitted) is stored in a different charge storage bin. Charge may be retrieved from different charge storage bins to determine depth from the DCA.

公开(公告)号：US11686935B2

公开(公告)日：2023-06-27

申请号：US16261531

申请日：2019-01-29

Applicant: Meta Platforms Technologies, LLC

Inventor： Qing Chao ,  Zhaoming Zhu

IPC: G02B27/00 ,  G06F3/01 ,  G01B11/22 ,  G01B11/25 ,  H04N23/56 ,  H04N23/74 ,  G02B27/01

CPC classification number: G02B27/0093 ,  G01B11/22 ,  G01B11/25 ,  G06F3/013 ,  H04N23/56 ,  H04N23/74 ,  G02B27/0172 ,  G02B2027/0138 ,  G02B2027/0178

Abstract: A depth camera assembly (DCA) has a light source assembly, a mask, a camera assembly, and a controller. The light source assembly includes at least one light source. The mask is configured to generate an interference pattern that is projected into a target area. The mask has two openings configured to pass through light emitted by the at least one light source, and the light passed through the two openings forms an interference pattern across the target area. The interference pattern has a phase based on a position of the light source. The camera assembly is configured to capture images of a portion of the target area that includes the interference pattern. The controller is configured to determine depth information for the portion of the target area based on the captured images.

公开(公告)号：US20230328401A1

公开(公告)日：2023-10-12

申请号：US18208143

申请日：2023-06-09

Applicant: Meta Platforms Technologies, LLC

Inventor： Michael Hall ,  Qing Chao

IPC: H04N25/53 ,  G01S17/89 ,  G02B27/01 ,  G01S7/4861 ,  H04N25/771

CPC classification number: H04N25/53 ,  G01S17/89 ,  G02B27/017 ,  G01S7/4861 ,  H04N25/771 ,  H04N13/207

Abstract: A depth camera assembly (DCA) determines distances between the DCA and objects in a local area within a field of view of the DCA. The DCA projects a series of sinusoidal patterns into the local area DCA and captures images of the sinusoidal patterns via a sensor. Each pixel of the augmented sensor includes a plurality of charge bins, and charge accumulated by a photodiode of a pixel during different time intervals (e.g., times when different sinusoidal patterns are emitted) is stored in a different charge storage bin. Charge may be retrieved from different charge storage bins to determine depth from the DCA.

公开(公告)号：US20230037261A1

公开(公告)日：2023-02-02

申请号：US17865223

申请日：2022-07-14

Applicant: Meta Platforms Technologies, LLC

Inventor： Qing Chao ,  Lu Lu ,  Xinqiao Liu ,  Hao Yu ,  Junren Wang

IPC: H04N5/33 ,  G02B5/32 ,  G02B3/00 ,  G02B5/20

Abstract: Imaging systems, cameras, and image sensors of this disclosure include imaging pixels that include subpixels. Diffractive optical elements such as a metasurface lens layers or a liquid crystal polarization hologram (LCPH) are configured to focus image light to the subpixels of the imaging pixels.