公开(公告)号：US20170370700A1

公开(公告)日：2017-12-28

申请号：US15682477

申请日：2017-08-21

Applicant: Automated Precision, Inc.

Inventor： Kam Chiu Lau

IPC: G01B11/00 ,  G01S17/42 ,  G01C15/00

CPC classification number: G01B11/002 ,  G01B5/012 ,  G01C15/002 ,  G01S17/42

Abstract: A optical target assembly is disclosed herein. The optical target assembly is movable about orthogonal pitch, yaw and roll axes and includes a reflector, a pitch and yaw angular sensor assembly, and a roll sensor assembly. The reflector is configured to engage a source of laser light. The pitch and yaw angular sensor includes a laser light sensor and an angle detection sensor. The pitch and yaw angular sensor assembly is configured to measure 360 degrees of motion about the pitch and the yaw axes. The roll sensor assembly is configured to measure 360 degrees of motion about the roll axis. The reflector can include an aperture configured to permit a portion of laser light incident on the reflector to pass through the reflector and onto the laser light sensor. The roll sensor assembly can include a roll angle sensor and a roll level sensor coupled to a two-dimensional pendulum.

公开(公告)号：US20230324165A1

公开(公告)日：2023-10-12

申请号：US17716266

申请日：2022-04-08

Applicant: AUTOMATED PRECISION INC.

Inventor： Yongwoo PARK ,  Shuai SUN ,  Kam LAU

IPC: G01B9/0209

CPC classification number: G01B9/0209 ,  G01B2290/20 ,  G01B2290/70 ,  G01B2290/35 ,  G01B2290/25

Abstract: A broadband interferometry for a measurement range extension beyond a coherence length of a light source includes a wavelength tunable laser as the light source outputting a coherence wavelength beam; and an interferometer disposed between the wavelength tunable laser and a target to be measured and including a reference arm, a measurement arm and a device combining a reference beam and measurement mean to produce a combined interference beam, wherein a local oscillation of the reference beam is replicated by a cavity multiplication or cascading optical delayed lines with a fiber optic cavity, and quantifiable optical properties including a wavelength group delay, a chromatic dispersion, a polarization mode dispersion and a model dispersion are inserted into the local oscillation of the reference beam to incrementally quantify the replicated copies of the local oscillation as the number of the delayed copies of the local oscillation increase for extension of a measurement rage to the target.

公开(公告)号：US20170131081A1

公开(公告)日：2017-05-11

申请号：US15343918

申请日：2016-11-04

Applicant: Automated Precision Inc.

Inventor： Kam Chiu Lau ,  Yongwoo Park

IPC: G01B9/02 ,  G01B11/14

CPC classification number: G01B9/02 ,  G01B9/02004 ,  G01B9/02041 ,  G01B9/0209 ,  G01B11/14

Abstract: Disclosed herein are interferometric measurement systems and methods. In one exemplary embodiment an interferometric measuring system for measuring the distance to or displacement of an object includes: a light source; an interferometer with a measuring arm and a reference arm; a dispersive medium; and a detector. The interferometer is disposed between the light source and the object. The dispersive medium is arranged to unbalance the dispersion between the measurement arm and the reference arm. The detector is arranged to detect spectrum interference from the interferometer. In one example, the dispersive medium is a chirped fiber Bragg grating. In another example, the dispersive medium is a highly dispersive optical fiber. In one example, the light source is a broadband light source, and the detector includes a spectrometer. In another example, the light source is a wavelength swept laser, and the detector includes a photodetector or a balanced photodetector.

公开(公告)号：US20030043362A1

公开(公告)日：2003-03-06

申请号：US10225134

申请日：2002-08-22

Applicant: AUTOMATED PRECISION, INC.

Inventor： Kam C. Lau

IPC: G01C003/08

CPC classification number: G01C15/00 ,  G01S5/163 ,  G01S7/499 ,  G01S17/74

Abstract: A laser based tracking unit communicates with a target to obtain position information about the target. Specifically, the target is placed at the point to be measured. The pitch, yaw and roll of the target, and the spherical coordinates of the target relative to the tracking unit are the obtained. The target can be, for example, an active device incorporated into a moveable device such a remote controlled robot.

Abstract translation: 基于激光的跟踪单元与目标通信以获得关于目标的位置信息。 具体来说，目标被放置在要测量的点上。 获得目标的俯仰，偏航和滚转以及目标相对于跟踪单元的球面坐标。 目标可以是例如并入到诸如遥控机器人的可移动设备中的主动设备。

公开(公告)号：US12196551B2

公开(公告)日：2025-01-14

申请号：US17716266

申请日：2022-04-08

Applicant: AUTOMATED PRECISION INC.

Inventor： Yongwoo Park ,  Shuai Sun ,  Kam Lau

IPC: G01B9/0209 ,  G01B9/02004

Abstract: A broadband interferometry for a measurement range extension beyond a coherence length of a light source is achieved through a local oscillation of the reference beam is replicated by a cavity multiplication or cascading optical delayed lines with a fiber optic cavity, and quantifiable optical properties including a wavelength group delay, a chromatic dispersion, a polarization mode dispersion and a model dispersion are inserted into the local oscillation of the reference beam to incrementally quantify the replicated copies of the local oscillation as the number of the delayed copies of the local oscillation increase for extension of a measurement rage to the target.

公开(公告)号：US20030206285A1

公开(公告)日：2003-11-06

申请号：US10429680

申请日：2003-05-06

Applicant: AUTOMATED PRECISION, INC.

Inventor： Kam C. Lau

IPC: G01B009/02

CPC classification number: B25J13/089 ,  B25J9/1692 ,  G01S17/023 ,  G01S17/42 ,  G01S17/74

Abstract: A laser based tracking unit communicates with a target to obtain position information about the target. Specifically, the target is placed at the point to be measured. The pitch, yaw and roll of the target, and the spherical coordinates of the target relative to the tracking unit are then obtained. Then additional information regarding a probe attached to the target reconciled with the above determination to determine a position of a probe tip. The target can be, for example, an active device incorporated into a moveable device such a remote controlled robot.

Abstract translation: 基于激光的跟踪单元与目标通信以获得关于目标的位置信息。 具体来说，目标被放置在要测量的点上。 然后获得目标的俯仰，偏航和滚动以及目标相对于跟踪单元的球坐标。 然后关于附着到目标上的探针的附加信息与上述确定相协调以确定探针尖端的位置。 目标可以是例如并入到诸如遥控机器人的可移动设备中的主动设备。

公开(公告)号：US10436569B2

公开(公告)日：2019-10-08

申请号：US15343918

申请日：2016-11-04

Applicant: Automated Precision Inc.

Inventor： Kam Chiu Lau ,  Yongwoo Park

IPC: G01B9/02 ,  G01B11/14

Abstract: Disclosed herein are interferometric measurement systems and methods. In one exemplary embodiment an interferometric measuring system for measuring the distance to or displacement of an object includes: a light source; an interferometer with a measuring arm and a reference arm; a dispersive medium; and a detector. The interferometer is disposed between the light source and the object. The dispersive medium is arranged to unbalance the dispersion between the measurement arm and the reference arm. The detector is arranged to detect spectrum interference from the interferometer. In one example, the dispersive medium is a chirped fiber Bragg grating. In another example, the dispersive medium is a highly dispersive optical fiber. In one example, the light source is a broadband light source, and the detector includes a spectrometer. In another example, the light source is a wavelength swept laser, and the detector includes a photodetector or a balanced photodetector.