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公开(公告)号：US20240045038A1
公开(公告)日：2024-02-08
申请号：US18488293
申请日：2023-10-17
Applicant: OPSYS Tech Ltd.
Inventor： Mark J. Donovan
IPC: G01S7/486 , G01S7/487 , G01S7/4863 , G01S17/42 , G01S7/481 , G01S17/931
CPC classification number: G01S7/4868 , G01S7/4876 , G01S7/4863 , G01S17/42 , G01S7/487 , G01S7/4815 , G01S17/931
Abstract: A light detection and ranging (LIDAR) system includes an optical transmitter comprising a plurality of lasers, where each of the plurality of lasers illuminates a field-of-view. A transmitter controller is configured to pulse desired ones of the plurality of lasers so that the plurality of lasers generate light in a desired illumination region. An optical receiver comprises a plurality of detectors positioned to detect light over the desired illumination region. The plurality of detectors generates an electrical detection signal. A time-of-flight measurement circuit measures the time-of-flight of light from the plurality of lasers to the plurality of detectors. The optical receiver calculates range information from the time-of-flight measurements. A receiver controller is electrically connected to the transmitter controller and is configured to bias at least some of the plurality of detectors at a bias point that achieves a desired detection signal noise level.
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公开(公告)号：US11846728B2
公开(公告)日：2023-12-19
申请号：US16878140
申请日：2020-05-19
Applicant: OPSYS Tech Ltd.
Inventor： Mark J. Donovan , Larry Fabiny
IPC: G01S7/481 , H01S5/183 , G01S7/4863 , G01S17/10 , G01S17/931 , G01S17/894 , H01S5/00 , G01J1/04 , G01S17/42 , G01S17/00
CPC classification number: G01S7/4815 , G01S7/4816 , G01S7/4817 , G01S7/4863 , G01S17/10 , G01S17/894 , G01S17/931 , H01S5/18388 , G01J1/0448 , G01S7/481 , G01S17/003 , G01S17/42 , H01S5/005
Abstract: A LIDAR system includes a plurality of lasers that generate an optical beam having a FOV. A plurality of detectors are positioned where a FOV of at least one of the plurality of optical beams generated by the plurality of lasers overlaps a FOV of at least two of the plurality of detectors. The lens system collimates and projects the optical beams generated by the plurality of lasers. An actuator is coupled to at least one of the plurality of lasers and the lens system to cause relative motion between the plurality of lasers and the lens system in a direction that is orthogonal to an optical axis of the lens system so as to cause relative motion between the FOVs of the optical beams generated by the plurality of lasers and the FOVs of the detectors.
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公开(公告)号：US11513195B2
公开(公告)日：2022-11-29
申请号：US16895588
申请日：2020-06-08
Applicant: OPSYS Tech Ltd.
Inventor： Mark J. Donovan , Larry Fabiny
IPC: G01S7/481 , G01S17/10 , G01S17/931
Abstract: A solid-state LIDAR system includes a plurality of lasers, each generating an optical beam having a FOV when energized. A plurality of detectors is positioned in an optical path of the optical beams generated by the plurality of lasers. A FOV of at least one of the plurality of optical beams generated by the plurality of lasers overlaps a FOV of at least two of the plurality of detectors. A controller is configured to generate bias signals at a plurality of laser control outputs that energize a selected group of the plurality of lasers in a predetermined time sequence and is configured to detect a predetermined sequence of detector signals generated by the plurality of detectors.
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公开(公告)号：US20220291359A1
公开(公告)日：2022-09-15
申请号：US17687652
申请日：2022-03-06
Applicant: OPSYS Tech Ltd.
Inventor： Noam Tziony , Mark J. Donovan
IPC: G01S7/497 , G01S17/931 , G01S17/894 , G01S17/10 , G01S7/481 , G01R19/165
Abstract: A method for detecting a fault condition in a light detection and ranging transmitter includes generating a control signal that comprises an address and desired drive voltage and current information for a laser in a laser array. A drive signal is generated for the laser in the laser array in response to the generated control signal and applied to a contact associated with that address of the laser array, thereby energizing the laser at a desired output power for a desired time. A determination is made on whether the drive signal has a parameter with a value that is outside a threshold range for eye safety. The address and the fault condition is stored if the parameter has the value outside the threshold range for eye safety and reported to a host that takes an action on the LiDAR transmitter in response to the fault condition.
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公开(公告)号：US20210234342A1
公开(公告)日：2021-07-29
申请号：US17155626
申请日：2021-01-22
Applicant: OPSYS Tech Ltd.
Inventor： Mark J. Donovan
Abstract: A matrix-addressable vertical cavity surface emitting laser array for light detection and ranging systems includes a plurality of rows of vertical cavity surface emitting lasers formed on a die with one row of vertical cavity surface emitting lasers comprising a plurality of vertical cavity surface emitting lasers each configured with a common cathode electrical connection on one side of the die and another row of vertical cavity surface emitting lasers comprising a plurality of vertical cavity surface emitting lasers each configured with a common cathode electrical connection on the other side of the die. Each of the rows of vertical cavity surface emitting lasers is configured with anode connections that allow activating only a portion of the row at a particular time so that Class 1 eye safety can be maintained.
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Patent Agency Ranking
公开(公告)号：US10514444B2
公开(公告)日：2019-12-24
申请号：US16028774
申请日：2018-07-06
Applicant: OPSYS Tech Ltd.
Inventor： Mark J. Donovan
Abstract: A light detection and ranging (LIDAR) transmitter includes a plurality of light emitters that generate a plurality of optical beams. A first lens is positioned in an optical path of the plurality of optical beams at a distance from at least one of the plurality of light emitters that is less than a focal length of the first lens. The first lens converges the plurality of optical beams to a converged optical beam having a beam waist. A second lens is positioned in the optical path of the converged optical beam. The second lens projects the converged optical beam to a target range. The position of the second lens and an emission width of at least one of the plurality of light emitters are configured to provide a desired field-of-view of the LIDAR transmitter at the target range.
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公开(公告)号：US20170307736A1
公开(公告)日：2017-10-26
申请号：US15456789
申请日：2017-03-13
Applicant: OPSYS Tech Ltd.
Inventor： Mark J. Donovan
Abstract: A multi-wavelength LIDAR system includes a first laser source that generates a first optical beam having a first wavelength and a second laser source that generates a second optical beam having a second wavelength. An optical element projects the first optical beam to form a first beam profile at a target plane and projects the second optical beam to form a second beam profile at the target plane. An optical receiver generates a first wavelength signal corresponding to the received reflected portion of the first beam profile and generates a second wavelength signal corresponding to the reflected portion of the second beam profile at the target plane. A controller generates a measurement point cloud from the first and second wavelength signals, wherein an angular resolution of the measurement point cloud depends on a relative position of the first and second beam profiles at the target plane.
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公开(公告)号：US20240361456A1
公开(公告)日：2024-10-31
申请号：US18764268
申请日：2024-07-04
Applicant: OPSYS Tech Ltd.
Inventor： Mark J. Donovan
CPC classification number: G01S17/10 , G01J1/00 , G01S7/4808 , G01S7/4814 , G01S7/4817 , G01S7/4876 , G01S17/89 , G01S17/931 , G01W1/02
Abstract: A method of Light Detection and Ranging (LIDAR) includes generating a first optical pulse that propagates towards a target and receiving an optical return signal reflected from the target resulting from the generated first optical pulse. The optical return signal is processed to determine a number of additional optical pulses desired to be propagated towards the target to meet a performance criteria. The determined number of additional optical pulses is then generated and propagated towards the target. The additional optical return signals reflected from the target are received and processed to obtain one or more LIDAR measurements.
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公开(公告)号：US11965964B2
公开(公告)日：2024-04-23
申请号：US16841930
申请日：2020-04-07
Applicant: Opsys Tech Ltd.
Inventor： Mark J. Donovan , Raphael Harel , Noam Tziony , Mordehai Caspi , Meir Fogel
Abstract: A solid state LIDAR transmitter with matrix-addressable laser drive circuit includes a first electrical bus that provides a first voltage potential to columns of the matrix-addressable laser drive circuit and a second electrical bus that provide a second voltage potential to rows of the matrix-addressable laser drive circuit. A plurality of column switches connects the plurality of columns to the first electrical bus. A plurality of row switches connects the plurality of rows to the second electrical bus. The transmitter includes a plurality of series connected diodes comprising a laser diode in series with another diode, where a respective one of the plurality of series connected diodes is electrically connected between a respective column and row of the matrix-addressable laser drive circuit to form the LIDAR transmitter. At least some of the second diodes increasing an overall reverse breakdown voltage of the series connected diodes.
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公开(公告)号：US20230384430A1
公开(公告)日：2023-11-30
申请号：US18364969
申请日：2023-08-03
Applicant: OPSYS Tech Ltd.
Inventor： Mark J. Donovan
CPC classification number: G01S7/484 , G01S7/497 , G01S17/89 , G01S17/10 , G01S17/931 , G01S7/499 , G01S7/4815
Abstract: A multi-wavelength LIDAR system includes a first laser source that generates a first optical beam having a first wavelength and a second laser source that generates a second optical beam having a second wavelength. An optical element projects the first optical beam to form a first beam profile at a target plane and projects the second optical beam to form a second beam profile at the target plane. An optical receiver generates a first wavelength signal corresponding to the received reflected portion of the first beam profile and generates a second wavelength signal corresponding to the reflected portion of the second beam profile at the target plane. A controller generates a measurement point cloud from the first and second wavelength signals, wherein an angular resolution of the measurement point cloud depends on a relative position of the first and second beam profiles at the target plane.
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