公开(公告)号：US20240361459A1

公开(公告)日：2024-10-31

申请号：US18647720

申请日：2024-04-26

申请人： Arete Associates

发明人： Paul Bryan Lundquist

IPC分类号： G01S17/42 ,  G01S7/481 ,  G01S7/4911 ,  G01S7/493 ,  G01S17/894

CPC分类号： G01S17/42 ,  G01S7/4817 ,  G01S7/4911 ,  G01S7/493 ,  G01S17/894

摘要： A Lidar system herein includes a transmitter operable to rotate at a first rate, and to transmit laser light along a first path from the Lidar system to a target, and a receiver operable to rotate with the transmitter, and to receive at least a portion of the laser light along a second different path from the target. The system includes an event-camera having a plurality of pixels being triggerable by photon flux changes. A processor calculates a range and an angle to the target using an angular displacement between the second path and the receiver that arises from the first rate of rotation for the transmitter and the receiver and, in part, from event data of at least one of the pixels based on a direction of the first path at a time of a photon flux change and a pixel coordinate of the at least one pixel.

公开(公告)号：US12080985B1

公开(公告)日：2024-09-03

申请号：US17157953

申请日：2021-01-25

申请人： Arete Associates

发明人： James Murray ,  Micah Boyd

IPC分类号： H01S3/08 ,  H01S3/06 ,  H01S3/081 ,  H01S3/083 ,  H01S3/105 ,  H01S3/107 ,  H01S3/0941

CPC分类号： H01S3/083 ,  H01S3/0602 ,  H01S3/08054 ,  H01S3/08059 ,  H01S3/08095 ,  H01S3/0813 ,  H01S3/0817 ,  H01S3/105 ,  H01S3/107 ,  H01S3/0941

摘要： Provided herein are systems and methods of manufacture and operation for a compact laser to achieve high-intensity output pulses. These compact laser resonators and methods rely upon separate and distinct functions of the laser resonator to be operated in balance such that the functions, while deleterious when separate are supportive of laser generation and growth when combined within a small volume laser resonator as described herein. The combined elements of the described laser resonator include a delicate balance that allows the laser to operate between plane-parallel operation and unstable operation. This operation mode further allows distinct methods of construction and operation that allow the compact laser to be reliably assembled and tested during assembly. Therefore, despite requiring a delicate balance of disparate elements, the described laser resonator results in a compact robust laser.

公开(公告)号：US12009631B1

公开(公告)日：2024-06-11

申请号：US17958317

申请日：2022-09-30

申请人： Arete Associates

发明人： Micah Boyd

IPC分类号： H01S3/115 ,  G02F1/03 ,  H01S3/083 ,  H01S3/10 ,  H01S3/127 ,  H01S3/13 ,  H01S3/136 ,  H01S3/0941

CPC分类号： H01S3/1305 ,  G02F1/0327 ,  H01S3/083 ,  H01S3/10061 ,  H01S3/115 ,  H01S3/127 ,  H01S3/136 ,  H01S3/0941

摘要： Described herein are methods for developing and maintaining pulses that are produced from compact resonant cavities using one or more Q-switches and maintaining the output parameters of these pulses created during repetitive pulsed operation. The deterministic control of the evolution of a Q-switched laser pulse is complicated due to dynamic laser cavity feedback effects and unpredictable environmental inputs. Laser pulse shape control in a compact laser cavity (e.g., length/speed of light

公开(公告)号：US11789152B2

公开(公告)日：2023-10-17

申请号：US16188828

申请日：2018-11-13

申请人： Arete Associates

发明人： Paul Bryan Lundquist

IPC分类号： G01S17/89 ,  G06T11/00 ,  G01S17/42

CPC分类号： G01S17/89 ,  G01S17/42 ,  G06T11/003

摘要： Lidar systems and methods are presented herein. In one embodiment, a lidar system includes a laser operable to propagate ultrashort laser pulses to a target during a plurality of scanning periods. The lidar system also includes a streak tube imaging system operable to collect returns of the ultrashort laser pulses from the target during each scanning period, and to generate a two-dimensional image of the returns during each scanning period. The lidar system also includes a processor operable to generate a representation of the target based on the 2D images from the streak tube imaging system.

公开(公告)号：US20230258784A1

公开(公告)日：2023-08-17

申请号：US18000757

申请日：2021-01-25

申请人： Arete Associates

发明人： Steven Eric RAKO ,  James Thomas MURRAY

IPC分类号： G01S7/486 ,  G01S7/481 ,  G01S7/484

CPC分类号： G01S7/4868 ,  G01S7/4818 ,  G01S7/484

摘要： In one embodiment, a system includes a signal generator operable to generate a control waveform, an optical splitter operable to split light among first and second optical paths, and a detector in optical communication with the first optical path and operable to provide reference for the control waveform generation of the signal generator via the light of the first optical path. The system also includes an optical switch operable to attenuate a portion of the light of the second optical path based on the generated control waveform to detect a dynamic range signal.

公开(公告)号：US11506786B2

公开(公告)日：2022-11-22

申请号：US16833867

申请日：2020-03-30

申请人： Arete Associates

发明人： Paul B. Lundquist

IPC分类号： G01S17/06 ,  G01S17/89 ,  G01S7/481

摘要： Systems and methods herein provide for Laser Detection and Ranging (Lidar). One Lidar system includes a laser operable to generate laser light. The system also includes a transmitter operable to rotate at a first rate, and to transmit the laser light along a first path from the Lidar system to a target. The system also includes a receiver operable to rotate at the first rate, and to receive at least a portion of the laser light along a second path from the target. The first and second paths are different. The system also includes a processor operable to calculate a range and an angle to the target using an angular displacement between the second path and the receiver that arises from the first rate of rotation for the transmitter and the receiver.

公开(公告)号：US11385350B2

公开(公告)日：2022-07-12

申请号：US15906818

申请日：2018-02-27

申请人： Arete Associates

发明人： Paul B. Lundquist ,  Gregory J. Fetzer ,  Richard Vercillo ,  Michael Francis Marnon ,  Thomas Laurence Kraus

IPC分类号： G01S17/00 ,  G01S17/08 ,  G01S17/42 ,  G01S7/481

摘要： Embodiments herein provide for improved range response in lidar systems. In one embodiment, a lidar system includes a laser, and a detector. First optics direct light from the laser on a beam path along a first optical axis of the first optics. Second optics image the light from the beam path onto a second plane that is substantially normal to the first plane. The second optics have a second optical axis that differs from the first optical axis. The first and the second optical axes lie in a same first plane. A first line in the first plane intersects a second line in the second plane at an acute angle. The first line is perpendicular to the first optical axis. A spatial filter configured in or near the second plane filters the light from the second optics onto the detector.

公开(公告)号：US20200295520A1

公开(公告)日：2020-09-17

申请号：US16886750

申请日：2020-05-28

申请人： Arete Associates

发明人： Micah Boyd

IPC分类号： H01S3/04 ,  H01S3/08

摘要： Described herein are isolated ring cavities that have refractive and heat-generating components physically separated and mechanically held by flexure mounts that are adapted to function in combination with the physically separated structure to moderate the thermal expansion effects of the heat generated by the refractive and other heat-generating elements (e.g., gain element) of the optical cavity. The flexure mounts may be configured as thinned portions of connective elements, reducing the effects of thermal expansion of the baseplate and allowing a thermal isolation from the baseplate. Multiple flexure mounts may be arranged to minimize further the effects of thermal expansion of the baseplate.

公开(公告)号：US10473786B2

公开(公告)日：2019-11-12

申请号：US15342374

申请日：2016-11-03

申请人： Arete Associates

发明人： Paul Bryan Lundquist

IPC分类号： G01S17/32 ,  G01S7/481 ,  G01S17/42 ,  G01S17/46

摘要： Systems and methods herein provide for Laser Detection and Ranging (Lidar). In one embodiment, a Lidar system includes a laser operable to propagate continuous wave (CW) laser light and a scanner operable as a transmitter and a receiver for the CW laser light. The Lidar system also includes a detector for determining a range to a target based on displacement of the CW laser light received by the receiver. The displacement of the CW laser light is proportional to an angular velocity of the scanner.

公开(公告)号：US07652752B2

公开(公告)日：2010-01-26

申请号：US11181665

申请日：2005-07-14

申请人： Gregory J. Fetzer ,  David N. Sitter, Jr. ,  Douglas Gugler ,  William L. Ryder ,  Andrew J. Griffis ,  David Miller ,  Asher Gelbart ,  Shannon Bybee-Driscoll

发明人： Gregory J. Fetzer ,  David N. Sitter, Jr. ,  Douglas Gugler ,  William L. Ryder ,  Andrew J. Griffis ,  David Miller ,  Asher Gelbart ,  Shannon Bybee-Driscoll

IPC分类号： G01C3/08

CPC分类号： G01S7/4811 ,  G01S7/484 ,  G01S7/4861 ,  G01S7/487 ,  G01S17/89

摘要： Pushbroom and flash lidar operations outside the visible spectrum, most preferably in near-IR but also in IR and UV, are enabled by inserting—ahead of a generally conventional lidar receiver front end—a device that receives light scattered from objects and in response forms corresponding light of a different wavelength from the scattered light. Detailed implementations using arrays of discrete COTS components—most preferably PIN diodes and VCSELs, with intervening semicustom amplifiers—are discussed, as is use of a known monolithic converter. Differential and ratioing multispectral measurements, particularly including UV data, are enabled through either spatial-sharing (e. g. plural-slit) or time-sharing.

摘要翻译： 在可见光谱之外的推子和闪光激光雷达操作，最优选地在近红外，而且在IR和UV中，通过将普通传统的激光雷达接收器前端插入前端 - 接收从物体散射的光和响应形式的装置 与散射光不同波长的相应光。 讨论了使用已知的单片转换器的使用的分立COTS组件阵列（最优选PIN二极管和VCSEL）与具有中间半定制放大器的详细实现。 差分和比例的多光谱测量，特别是包括UV数据，可以通过空间共享（例如多个狭缝）或分时启用。