公开(公告)号：US10168147B2

公开(公告)日：2019-01-01

申请号：US15502948

申请日：2015-08-10

Applicant: Facebook, Inc.

Inventor： Guy Raz ,  Nadav Grossinger ,  Nitay Romano

IPC: G02B27/42 ,  G01B11/25 ,  G06F3/01 ,  G06F3/03 ,  G02B27/30

Abstract: Apparatus for structured light scanning. The structured light includes one or more projected lines or other patterns. At least two independent emitters emit light for each projected line or pattern. Typically the at least two independent emitters are arranged in a row. The apparatus also includes a pattern generator for causing light from respective emitters of a given row to overlap along a pattern axis to form a projected pattern.

公开(公告)号：US09870068B2

公开(公告)日：2018-01-16

申请号：US15077540

申请日：2016-03-22

Applicant: Facebook, Inc.

Inventor： Nitay Romano ,  Nadav Grossinger ,  Yair Alpern ,  Emil Alon ,  Guy Raz

IPC: G06F3/03 ,  H04N13/02 ,  H04N13/04 ,  H01S5/00 ,  H01S5/42 ,  H04N13/00

CPC classification number: G06F3/0317 ,  H01S5/0085 ,  H01S5/423 ,  H04N13/25 ,  H04N13/254 ,  H04N13/344 ,  H04N2013/0081

Abstract: A tracking system generates a structured light pattern in a local area. The system includes an array of lasers that generate light. The array of lasers includes a plurality of lasers and an optical element. The plurality of lasers are grouped into at least two subsets of lasers, and each of the at least two subsets of lasers is independently switchable. The optical element includes a plurality of cells that are each aligned with a respective subset of the array of lasers. Each cell receives light from a corresponding laser of the array of lasers, and each cell individually applies a modulation to the received light passing through the cell to form a corresponding portion of the structured light pattern that is projected onto a local area.

公开(公告)号：US09842407B2

公开(公告)日：2017-12-12

申请号：US15455050

申请日：2017-03-09

Applicant: Facebook, Inc.

Inventor： Guy Raz ,  Yair Alpern ,  Nadav Grossinger

IPC: G02B26/08 ,  G06T7/521 ,  G01B11/25 ,  H04N5/225 ,  G02B5/18

CPC classification number: G06T7/521 ,  G01B11/2513 ,  G02B5/1842 ,  G02B26/0808 ,  G02B26/0816 ,  H04N5/2256 ,  H04N9/00 ,  H04N13/254 ,  H04N13/271 ,  H05B37/0209

Abstract: A method and system for generating light pattern using reflective polygons are provided herein. The method may include: rotating at least one polygon having a plurality of reflective facets along a rotation axis parallel to the facets; transmitting a light beam on the facets of the polygon; tilting the light beam relative to the polygon in parallel to the rotation axis so that the light beam hits each of the facets at a different tilt angle, thereby producing a light pattern comprising a plurality of lines; and controlling at least one of: the light intensity, the rotating, and the tilting, so as to produce an adjustable light pattern transmitted at a scene.

公开(公告)号：US20170199029A1

公开(公告)日：2017-07-13

申请号：US15324200

申请日：2015-07-07

Applicant: Facebook, Inc.

Inventor： Guy Raz

IPC: G01B11/25 ,  G01B11/22 ,  G06T7/521 ,  G01S17/89

CPC classification number: G01B11/2513 ,  G01B11/22 ,  G01S17/89 ,  G06T7/521 ,  G06T2207/10028

Abstract: A system and a method for producing an adjustable light pattern are provided herein. The system may include: a transmitter configured to illuminate a scene with a patterned light being adjusted based on predefined criteria; a receiver configured to receive reflections of the adjusted patterned light; and a computer processor configured to control the adjustment of the patterned light and further analyze the received reflections, to yield a depth map of objects within the scene, wherein the transmitter may include: a light source configured to produce a light beam; a first reflector tiltable approximately along a line on an x-y plane in a Cartesian x-y-z coordinate system; and a second reflector tiltable along a z-axis in said coordinate system, wherein the reflectors are tilted along their respective axes back and forth so as to divert the light beam for creating the adjusted patterned light.

公开(公告)号：US09648698B2

公开(公告)日：2017-05-09

申请号：US14716888

申请日：2015-05-20

Applicant: Facebook, Inc.

Inventor： Guy Raz ,  Yair Alpern ,  Nadav Grossinger

IPC: G02B26/08 ,  H05B37/02 ,  G01B11/25 ,  H04N9/00

CPC classification number: G06T7/521 ,  G01B11/2513 ,  G02B5/1842 ,  G02B26/0808 ,  G02B26/0816 ,  H04N5/2256 ,  H04N9/00 ,  H04N13/254 ,  H04N13/271 ,  H05B37/0209

Abstract: A method and system for generating light pattern using reflective polygons are provided herein. The method may include: rotating at least one polygon having a plurality of reflective facets along a rotation axis parallel to the facets; transmitting a light beam on the facets of the polygon; tilting the light beam relative to the polygon in parallel to the rotation axis so that the light beam hits each of the facets at a different tilt angle, thereby producing a light pattern comprising a plurality of lines; and controlling at least one of: the light intensity, the rotating, and the tilting, so as to produce an adjustable light pattern transmitted at a scene.

公开(公告)号：US10031588B2

公开(公告)日：2018-07-24

申请号：US15827816

申请日：2017-11-30

Applicant: Facebook, Inc.

Inventor： Nitay Romano ,  Nadav Grossinger ,  Yair Alpern ,  Emil Alon ,  Guy Raz

IPC: G06F3/03 ,  H04N13/04 ,  H04N13/02 ,  H04N13/25 ,  H04N13/254 ,  H04N13/344 ,  H04N13/00 ,  H01S5/42 ,  H01S5/00

Abstract: A tracking system generates a structured light pattern in a local area. The system includes an array of lasers that generate light. The array of lasers includes a plurality of lasers and an optical element. The plurality of lasers are grouped into at least two subsets of lasers, and each of the at least two subsets of lasers is independently switchable. The optical element includes a plurality of cells that are each aligned with a respective subset of the array of lasers. Each cell receives light from a corresponding laser of the array of lasers, and each cell individually applies a modulation to the received light passing through the cell to form a corresponding portion of the structured light pattern that is projected onto a local area.

公开(公告)号：US20180157342A1

公开(公告)日：2018-06-07

申请号：US15827816

申请日：2017-11-30

Applicant: Facebook, Inc.

Inventor： Nitay Romano ,  Nadav Grossinger ,  Yair Alpern ,  Emil Alon ,  Guy Raz

IPC: G06F3/03 ,  H01S5/00 ,  H01S5/42 ,  H04N13/00

CPC classification number: G06F3/0317 ,  G06F3/0325 ,  H01S5/0085 ,  H01S5/423 ,  H04N13/25 ,  H04N13/254 ,  H04N13/344 ,  H04N2013/0081

Abstract: A tracking system generates a structured light pattern in a local area. The system includes an array of lasers that generate light. The array of lasers includes a plurality of lasers and an optical element. The plurality of lasers are grouped into at least two subsets of lasers, and each of the at least two subsets of lasers is independently switchable. The optical element includes a plurality of cells that are each aligned with a respective subset of the array of lasers. Each cell receives light from a corresponding laser of the array of lasers, and each cell individually applies a modulation to the received light passing through the cell to form a corresponding portion of the structured light pattern that is projected onto a local area.

公开(公告)号：US20170234679A1

公开(公告)日：2017-08-17

申请号：US15502948

申请日：2015-08-10

Applicant: Facebook, Inc.

Inventor： Guy Raz ,  Nadav Grossinger ,  Nitay Romano

IPC: G01B11/25 ,  G06F3/03 ,  G06F3/01 ,  G02B27/42 ,  G02B27/30

CPC classification number: G01B11/2513 ,  G01B11/25 ,  G02B27/30 ,  G02B27/425 ,  G06F3/011 ,  G06F3/017 ,  G06F3/0304 ,  G06F3/0325

Abstract: Apparatus for structured light scanning, the structured light comprising one or more projected lines or other patterns, comprises at least two independent emitters for each projected line or pattern, typically arranged in a row, and a pattern generator for causing light from respective emitters of a given row to overlap along the pattern axis to form the projected pattern. The independent emitters provide incoherent light along the pattern so that speckle noise is minimized despite the overlapping.

公开(公告)号：US20170186182A1

公开(公告)日：2017-06-29

申请号：US15455050

申请日：2017-03-09

Applicant: Facebook, Inc.

Inventor： Guy Raz ,  Yair Alpern ,  Nadav Grossinger

IPC: G06T7/521 ,  G02B5/18 ,  G02B26/08 ,  G01B11/25 ,  H04N5/225

CPC classification number: G06T7/521 ,  G01B11/2513 ,  G02B5/1842 ,  G02B26/0808 ,  G02B26/0816 ,  H04N5/2256 ,  H04N9/00 ,  H04N13/254 ,  H04N13/271 ,  H05B37/0209

Abstract: A method and system for generating light pattern using reflective polygons are provided herein. The method may include: rotating at least one polygon having a plurality of reflective facets along a rotation axis parallel to the facets; transmitting a light beam on the facets of the polygon; tilting the light beam relative to the polygon in parallel to the rotation axis so that the light beam hits each of the facets at a different tilt angle, thereby producing a light pattern comprising a plurality of lines; and controlling at least one of: the light intensity, the rotating, and the tilting, so as to produce an adjustable light pattern transmitted at a scene.