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：US11480684B2

公开(公告)日：2022-10-25

申请号：US17138537

申请日：2020-12-30

Applicant: Meta Platforms Technologies, LLC

Inventor： Augusto Ronchini Ximenes ,  Michael Hall ,  Zhaoming Zhu ,  Shuochen Su

IPC: G01S17/894 ,  G02B27/01 ,  G01S17/86 ,  G01S7/4863

Abstract: A direct time of flight depth system includes an addressable illumination source, an active depth sensor, and a controller. The addressable illumination source includes an array of emitters and an optical assembly that is used to generate an array of dots emitted into a local area. Each emitter is independently addressable, allowing selective illumination of different portions of the local area. The addressable illumination source is aligned with the active depth sensor so each dot maps to a corresponding macropixel (e.g., 4×4 array of SPADs) on the active depth sensor. Data from the active depth sensor is readout and used to determine depth information.