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公开(公告)号：US11762068B2
公开(公告)日：2023-09-19
申请号：US16805733
申请日：2020-02-29
Applicant: OPSYS Tech Ltd.
Inventor： Mark J. Donovan
CPC classification number: G01S7/484 , G01S7/4815 , G01S7/497 , G01S7/499 , G01S17/10 , G01S17/89 , G01S17/931
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：US20230213625A1
公开(公告)日：2023-07-06
申请号：US18183748
申请日：2023-03-14
Applicant: OPSYS Tech Ltd.
Inventor： Mark J. Donovan
CPC classification number: G01S7/484 , G01S7/4815 , G01S7/497
Abstract: A LIDAR illuminator includes a plurality of laser sources, each comprising an electrical input that receives a modulation drive signal that causes each of the plurality of laser sources to generate an optical beam. A controller having a plurality of electrical outputs, where a respective one of the plurality of electrical outputs is connected to an electrical input of a respective one of the plurality of laser sources, generates a plurality of modulation drive signals that cause the plurality of laser sources to generate a plurality of optical beams that form a combined optical beam. A peak optical energy of the combined optical beam in a measurement aperture at a measurement distance is less than a desired value.
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公开(公告)号：US11320538B2
公开(公告)日：2022-05-03
申请号：US17227300
申请日：2021-04-10
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：US20210278540A1
公开(公告)日：2021-09-09
申请号：US17191641
申请日：2021-03-03
Applicant: OPSYS Tech Ltd.
Inventor： Niv Maayan , Amit Fridman , Itamar Eliyahu , Mark J. Donovan
IPC: G01S17/89 , G01S7/481 , G01J1/42 , G01S7/4865 , G01S17/931
Abstract: A system and method of noise filtering light detection and ranging signals to reduce false positive detection of light generated by a light detection and ranging transmitter in an ambient light environment that is reflected by a target scene. A received data trace is generated based on the detected light. An ambient light level is determined based on the received data trace. Valid return pulses are determined by noise filtering, which can for example, by comparing magnitudes of return pulses to a predetermined variable, N, times the determined ambient light level or by comparing magnitudes of return pulses to a sum of the ambient light level and N-times the variance of the ambient light level. A point cloud comprising the plurality of data points with a reduced false positive rate is generated.
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公开(公告)号：US20200326425A1
公开(公告)日：2020-10-15
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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Patent Agency Ranking
公开(公告)号：US20190302246A1
公开(公告)日：2019-10-03
申请号：US16366729
申请日：2019-03-27
Applicant: Opsys Tech Ltd.
Inventor： Mark J. Donovan , Larry Fabiny
Abstract: A LIDAR system includes an optical transmitter comprising a plurality of lasers, each illuminating a FOV in an illumination region. A transmitter controller has outputs connected to respective laser inputs. The transmitter controller generates electrical pulses at the outputs so that the lasers generate light in a desired pattern in the illumination region. An optical receiver has an input FOV in the illumination region and comprises a plurality of detectors, each having a FOV and being positioned to detect light over the illumination region; and a TOF measurement circuit that measures the TOF from the lasers to the detectors. The receiver calculates range information. An adaptive optical shutter positioned between the optical transmitter and the optical receiver has a transparent or reflected region FOV, where the optical shutter restricts illumination at the input of the optical receiver to a region which is smaller than the optical receiver FOV.
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公开(公告)号：US20240337748A1
公开(公告)日：2024-10-10
申请号：US18745220
申请日：2024-06-17
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：US12038509B2
公开(公告)日：2024-07-16
申请号：US18353091
申请日：2023-07-16
Applicant: Opsys Tech Ltd.
Inventor： Mark J. Donovan , Raphael Harel , Noam Tziony , Mordehai Caspi , Meir Fogel
Abstract: A solid state LIDAR transmitter includes a two dimensional array of laser devices having columns and rows and configured such that anodes of laser devices in a column are connected to a common anode connection and cathodes of laser devices in a row are connected to a common cathode connection. A capacitive discharge circuit comprises a first switch configured so the capacitive discharge circuit charges to a voltage potential when the first switch is open and discharges when the first switch is closed. A second switch is configured such that the common cathode connection is coupled to ground when the second switch is closed. A controller is configured to instruct the first switch and the second switch to close at a time t0 such that the capacitive discharge circuit charges to the voltage potential at a time, t1, thereby causing a laser device connected between the capacitive discharge circuit and the second switch to generate an optical pulse.
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公开(公告)号：US20240019549A1
公开(公告)日：2024-01-18
申请号：US18475465
申请日：2023-09-27
Applicant: OPSYS Tech Ltd.
Inventor： Mark J. Donovan , Larry Fabiny
IPC: G01S7/481 , G01S7/4865 , G01S7/484 , G01S17/08 , G02B26/08 , G01S17/931
CPC classification number: G01S7/4815 , G01S7/4865 , G01S7/484 , G01S7/4817 , G01S17/08 , G02B26/0833 , G01S17/931
Abstract: A LIDAR system includes an optical transmitter comprising a plurality of lasers, each illuminating a FOV in an illumination region. A transmitter controller has outputs connected to respective laser inputs. The transmitter controller generates electrical pulses at the outputs so that the lasers generate light in a desired pattern in the illumination region. An optical receiver has an input FOV in the illumination region and comprises a plurality of detectors, each having a FOV and being positioned to detect light over the illumination region; and a TOF measurement circuit that measures the TOF from the lasers to the detectors. The receiver calculates range information. An adaptive optical shutter positioned between the optical transmitter and the optical receiver has a transparent or reflected region FOV, where the optical shutter restricts illumination at the input of the optical receiver to a region which is smaller than the optical receiver FOV.
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公开(公告)号：US20230358887A1
公开(公告)日：2023-11-09
申请号：US18353091
申请日：2023-07-16
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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