公开(公告)号：US20190383910A1

公开(公告)日：2019-12-19

申请号：US16442051

申请日：2019-06-14

Applicant: Analog Devices, Inc.

Inventor： Tyler Adam Dunn ,  Andrew William Sparks

IPC: G01S7/481 ,  G02B3/12 ,  G01S7/486

Abstract: A detector for use in detecting reflected or scattered light pulses for a lidar system includes a primary lens, a secondary lens, and a photodiode array. The primary lens is configured to collect and focus the light pulses, the secondary lens is configured to receive and further focus the light pulses from the primary lens, and the photodiode array is configured to receive and sense the light pulses from the secondary lens. At least one of the primary lens or the secondary lens are configured using liquid crystal polymer (LCP),

公开(公告)号：US10133083B1

公开(公告)日：2018-11-20

申请号：US15678741

申请日：2017-08-16

Applicant: Analog Devices, Inc.

Inventor： Michael Ziemkiewicz ,  Michael Howard Anderson ,  Scott Robert Davis ,  Benjamin Luey ,  Tyler Adam Dunn

IPC: G02B27/42 ,  G02F1/295 ,  G02B5/18 ,  G02B27/44

Abstract: A non-mechanical beamsteerer can be provided to adjust an angle of a light beam, such as to scan the light beam over a field of regard. The non-mechanical beamsteerer can include a first collection of steering elements that are smaller than a size of a light beam. The first collection of steering elements can adjust the angle of the light beam by diffracting the light beam. The non-mechanical beamsteerer can also include a second collection of steering elements that are larger than a size of the light beam. The second collection of steering elements can adjust an angle of the light beam by refracting the light beam. The non-mechanical beamsteerer can operate without a compensation plate, such as to provide a reduced size of the beamsteerer and an increased acceptance angle of the beamsteerer.

公开(公告)号：US11774244B2

公开(公告)日：2023-10-03

申请号：US17515271

申请日：2021-10-29

Applicant: Analog Devices, Inc.

Inventor： Jeffrey A. Gregory ,  Charles Blackmer ,  Tyler Adam Dunn ,  Eugene Oh Hwang ,  Jinbo Kuang ,  Kemiao Jia ,  Laura Cornelia Popa ,  Igor P. Prikhodko ,  Erdinc Tatar

IPC: G01C19/5747 ,  G01C19/5712 ,  G01C19/5719 ,  G01C19/574

CPC classification number: G01C19/5747 ,  G01C19/574 ,  G01C19/5712 ,  G01C19/5719

Abstract: Columnar multi-axis microelectromechanical systems (MEMS) devices (such as gyroscopes) balanced against undesired linear and angular vibration are described herein. In some embodiments, the columnar MEMS device may comprise at least two multiple-mass columns, each having at least three proof masses and being configured to sense rotation about a respective axis. The motion and mass of the proof masses may be controlled to achieve linear and rotational balancing of the MEMS device. The columnar MEMS device may further comprise one or more modular drive structures disposed alongside each multiple-mass column to facilitate displacement of the proof masses of a respective column. The MEMS devices described herein may be used to sense roll, yaw, and pitch angular rates.

公开(公告)号：US11378689B2

公开(公告)日：2022-07-05

申请号：US16793505

申请日：2020-02-18

Applicant: Analog Devices, Inc.

Inventor： Tyler Adam Dunn ,  Andrew William Sparks ,  Michael Ziemkiewicz ,  Miles R. Bennett

IPC: G01C3/08 ,  G01S17/34 ,  G01S7/4914 ,  G01S7/4911

Abstract: A light detection and ranging (LIDAR) system comprises a laser diode; a laser diode driver circuit configured generate a laser beam using the laser diode and to frequency chirp the generated laser beam according to a frequency chirp period; a laser splitter to split the generated laser beam into N transmit laser beams pointed at different angles, wherein N is an integer greater than one, and a frequency chirp period of each of the N transmit laser beams is the frequency chirp period of the generated laser beam; and multiple return beam paths to receive N return beams and determine time of flight values for the N return beams in parallel.

公开(公告)号：US20210381834A1

公开(公告)日：2021-12-09

申请号：US16894717

申请日：2020-06-05

Applicant: Analog Devices, Inc.

Inventor： Jeffrey A. Gregory ,  Charles Blackmer ,  Tyler Adam Dunn ,  Eugene Oh Hwang ,  Jinbo Kuang ,  Kemiao Jia ,  Laura Cornelia Popa ,  Igor P. Prikhodko ,  Erdinc Tatar

IPC: G01C19/5747 ,  G01C19/5712

Abstract: Columnar multi-axis microelectromechanical systems (MEMS) devices (such as gyroscopes) balanced against undesired linear and angular vibration are described herein. In some embodiments, the columnar MEMS device may comprise at least two multiple-mass columns, each having at least three proof masses and being configured to sense rotation about a respective axis. The motion and mass of the proof masses may be controlled to achieve linear and rotational balancing of the MEMS device. The columnar MEMS device may further comprise one or more modular drive structures disposed alongside each multiple-mass column to facilitate displacement of the proof masses of a respective column. The MEMS devices described herein may be used to sense roll, yaw, and pitch angular rates.

公开(公告)号：US20210255324A1

公开(公告)日：2021-08-19

申请号：US16793505

申请日：2020-02-18

Applicant: Analog Devices, Inc.

Inventor： Tyler Adam Dunn ,  Andrew William Sparks ,  Michael Ziemkiewicz ,  Miles R. Bennett

IPC: G01S17/34 ,  G01S7/4911 ,  G01S7/4914

Abstract: A light detection and ranging (LIDAR) system comprises a laser diode; a laser diode driver circuit configured generate a laser beam using the laser diode and to frequency chirp the generated laser beam according to a frequency chirp period; a laser splitter to split the generated laser beam into N transmit laser beams pointed at different angles, wherein N is an integer greater than one, and a frequency chirp period of each of the N transmit laser beams is the frequency chirp period of the generated laser beam; and multiple return beam paths to receive N return beams and determine time of flight values for the N return beams in parallel.