公开(公告)号：US11586036B2

公开(公告)日：2023-02-21

申请号：US16725185

申请日：2019-12-23

Applicant: Meta Platforms Technologies, LLC

Inventor： Andrew Matthew Bardagjy ,  Joseph Duggan ,  Cina Hazegh ,  Fei Liu ,  Mark Timothy Sullivan ,  Simon Morris Shand Weiss

IPC: G02B26/08 ,  G02B26/10 ,  G02F1/29 ,  G03B15/06 ,  G02B27/30 ,  G02B27/42 ,  G03B17/54 ,  G03B21/00 ,  G01B11/25

Abstract: A depth camera assembly (DCA) for depth sensing of a local area includes a structured light generator, an imaging device, and a controller. The structured light generator illuminates the local area with a structured light pattern. The structured light generator includes a programmable diffractive optical element (PDOE) that generates diffracted scanning beams using optical beams. The PDOE functions as a dynamic diffraction grating that dynamically adjusts diffraction of the optical beams to generate the diffracted scanning beams of different patterns. The diffracted scanning beams are projected as the structured light pattern into the local area, wherein the structured light pattern is dynamically adjustable based on the PDOE. The imaging device captures image(s) of at least a portion of the structured light pattern reflected from object(s) in the local area. The controller determines depth information for the object(s) based on the captured image(s).

公开(公告)号：US11450015B2

公开(公告)日：2022-09-20

申请号：US16743685

申请日：2020-01-15

Applicant: Meta Platforms Technologies, LLC

Inventor： Andrew Matthew Bardagjy ,  Joseph Duggan ,  Cina Hazegh ,  Fei Liu ,  Mark Timothy Sullivan ,  Simon Morris Shand Weiss

IPC: G06T7/521 ,  G02B27/01 ,  G02B26/08 ,  G02B27/42 ,  G02B27/30 ,  H04N5/225

Abstract: A depth camera assembly for depth sensing of a local area includes a structured light generator, an imaging device, and a controller. The structured light generator illuminates a local area with structured light and includes an illumination source, a mounting element, and a diffractive optical element (DOE) mounted on the mounting element. The mounting element can have a plurality of adjustable positions relative to the illumination source based on emission instructions from the controller. The DOE generates, using light emitted from the illumination source, diffracted scanning beams that are projected as the structured light into the local area. A pattern of the structured light is dynamically adjustable and unique for each adjustable position of the mounting element. The imaging device captures image(s) of the structured light reflected from object(s) in the local area. The controller determines depth information for the object(s) based in part on the captured image(s).

公开(公告)号：US11709364B1

公开(公告)日：2023-07-25

申请号：US17728560

申请日：2022-04-25

Applicant: Meta Platforms Technologies, LLC

Inventor： Zhaoming Zhu ,  Mark Timothy Sullivan ,  Jonatan Ginzburg

IPC: G06T7/521 ,  G03B21/20 ,  G01S17/89 ,  G06F3/01 ,  G02B27/01 ,  H04N23/611 ,  H01S5/183

CPC classification number: G02B27/0172 ,  G01S17/89 ,  G02B27/0179 ,  G03B21/2033 ,  G06F3/013 ,  G06T7/521 ,  H04N23/611 ,  G02B2027/0178 ,  G06T2207/10028 ,  H01S5/18302

Abstract: A projector for illuminating a target area is presented. The projector includes an array of emitters positioned on a substrate according to a distribution. Each emitter in the array of emitters has a non-circular emission area. Operation of at least a portion of the array of emitters is controlled based in part on emission instructions to emit light. The light from the projector is configured to illuminate the target area. The projector can be part of a depth camera assembly for depth sensing of a local area, or part of an eye tracker for determining a gaze direction for an eye.

公开(公告)号：US12140763B1

公开(公告)日：2024-11-12

申请号：US18206856

申请日：2023-06-07

Applicant: Meta Platforms Technologies, LLC

Inventor： Zhaoming Zhu ,  Mark Timothy Sullivan ,  Jonatan Ginzburg

IPC: G02B27/01 ,  G01S17/89 ,  G03B21/20 ,  G06F3/01 ,  G06T7/521 ,  H01S5/183 ,  H04N23/611

Abstract: A projector for illuminating a target area is presented. The projector includes an array of emitters positioned on a substrate according to a distribution. Each emitter in the array of emitters has a non-circular emission area. Operation of at least a portion of the array of emitters is controlled based in part on emission instructions to emit light. The light from the projector is configured to illuminate the target area. The projector can be part of a depth camera assembly for depth sensing of a local area, or part of an eye tracker for determining a gaze direction for an eye.

公开(公告)号：US11681209B1

公开(公告)日：2023-06-20

申请号：US17680432

申请日：2022-02-25

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Mark Timothy Sullivan ,  Jonatan Ginzburg

IPC: G03B21/14 ,  G02B27/42 ,  G02B27/09

CPC classification number: G03B21/142 ,  G02B27/0944 ,  G02B27/4233 ,  G03B21/145

Abstract: The disclosed structured light projector may include (1) a light source having a light-emitting side that emits light, (2) a solid optical spacer element having a first side securely coupled to the light-emitting side of the light source, and (3) a diffractive optical element (DOE) stack including one or more DOEs, where the DOE stack includes (a) a light-receiving side securely coupled to a second side of the solid optical spacer element opposite the first side, and (b) a light-emitting side opposite the light-receiving side that emits structured light in response to the light received from the light-emitting side of the light source via the solid optical spacer element. Various other devices and methods are also disclosed.