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公开(公告)号：US20230012158A1
公开(公告)日：2023-01-12
申请号：US17863026
申请日：2022-07-12
Applicant: Seagate Technology LLC
Inventor： Daniel Joseph Klemme , Kevin A. Gomez , Daniel Aaron Mohr
IPC: G01S17/89 , G01S7/481 , G01S7/483 , G01S17/931 , G02B26/08
Abstract: Apparatus and method for enhancing resolution in a light detection and ranging (LiDAR) system. In some embodiments, an emitter is configured to emit a first beam of light pulses over a baseline, first field of view (FoV). Responsive to an activation signal, a controller circuit directs the emitter to concurrently interleave a second beam of light pulses over a second FoV within the first FoV. The first and second beams may be provided at different resolutions and frame rates, and may have pulses with different waveform characteristics to enable decoding using separate detection channels. The interlaced beams provide variable scanning of particular areas of interest within the baseline FoV. The second beam may be activated based on range information obtained from the first beam, or from an external sensor. Separate light sources operative at different wavelengths can be used to generate the first and second beams.
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公开(公告)号：US20230003860A1
公开(公告)日：2023-01-05
申请号：US17852890
申请日：2022-06-29
Applicant: Seagate Technology LLC
Inventor： Eric James Dahlberg , Adam Robert Bush , Daniel Aaron Mohr , Daniel Joseph Klemme , James Froberg
Abstract: A light detection and ranging system can have a light source coupled to a polygon reflector having a plurality of facets. A controller can be connected to the light source and directed to generate and execute a calibration strategy that alters an orientation of the light source in response to identification of a position of at least one facet of the plurality of facets.
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Patent Agency Ranking
3.发明公开公开(公告)号：US20230194709A9
公开(公告)日：2023-06-22
申请号：US17833066
申请日：2022-06-06
Applicant: Seagate Technology LLC
Inventor： Daniel Joseph Klemme , Daniel Aaron Mohr
Abstract: Method and apparatus for obtaining range information associated with a target using light detection and ranging (LiDAR). An emitter transmits a set of pulses of electromagnetic radiation to illuminate a target. The set of pulses includes a pair of emitted pulses with different waveform characteristics, such as slightly different phases. A detector receives a reflected set of pulses from the target. The received set of pulses includes a pair of received pulses with corresponding different waveform characteristics. The detector determines the range information by decoding the received pulses, such as by calculating an average of the phase differential in the received pulses. In this way, a single stage detector can be used without the need for separate I/Q (in-phase and quadrature) channels. Phase chirping can be used so that each successive pair of pulses has a different phase difference. Other waveform characteristics can be used including frequency, amplitude, shape, etc.
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公开(公告)号：US20230071905A1
公开(公告)日：2023-03-09
申请号：US17897403
申请日：2022-08-29
Applicant: Seagate Technology LLC
Inventor： Daniel Joseph Klemme , Daniel Aaron Mohr
Abstract: Method and apparatus for generating pulses in a light detection and ranging (LiDAR) system. In some embodiments, a resonance chamber is provided to recirculate electromagnetic radiation from a light source between a base mirror and an active laminated structure characterized as a Bragg grating structure and having interleaved passive and active layers. A Q-switch control circuit applies a voltage profile to the active layers to transition the active laminated structure between a charging state in which the electromagnetic radiation recirculates within the resonance chamber and a release state in which the electromagnetic radiation is transmitted through the active laminated structure as an emitted light pulse. The passive layers may be formed of a dielectric material. The active layers may be formed of a metal material such but not limited to Indium Tin Oxide (ITO), Lithium Niobate (LiNbO3), Barium Titanate (BaTiO3), doped Silicon (Si), or doped Germanium (Ge).
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公开(公告)号：US20230004016A1
公开(公告)日：2023-01-05
申请号：US17844402
申请日：2022-06-20
Applicant: Seagate Technology LLC
Inventor： Daniel Joseph Klemme , Daniel Aaron Mohr
Abstract: Apparatus for collimating light in a light detection and ranging (LiDAR) system. A light source outputs a light beam for transmission to a target, such as a multi-mode source which generates an elongated beam with a higher diverging fast axis and a lower diverging slow axis. A refractive lens assembly collimates the light beam using a concave first cylindrical surface extending in facing relation toward the light source along the fast axis and a convex, second cylindrical surface facing away from the light source and extending along the slow axis orthogonal to the first cylindrical surface. A second refractive lens assembly distal from and orthogonal to the second cylindrical surface has a convex third cylindrical surface to further collimate the light beam along the fast axis. The elongated beam may diverge at a greater angle along the fast axis as compared to the slow axis.
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公开(公告)号：US20230008801A1
公开(公告)日：2023-01-12
申请号：US17862949
申请日：2022-07-12
Applicant: Seagate Technology LLC
Inventor： Daniel Joseph Klemme , Daniel Aaron Mohr , Kevin A. Gomez
IPC: G01S7/481 , G01S17/89 , G01S17/10 , G01S7/4861
Abstract: Method and apparatus for enhancing resolution in a light detection and ranging (LiDAR) system. In some embodiments, an emitter is used to emit light pulses at a first resolution within a baseline, first field of view (FoV). A specially configured optical element, such as a refractive optical lens, is activated responsive to an input signal to direct at least a portion of the emitted light pulses to an area of interest characterized as a second FoV within the first FoV. The second FoV is provided with a higher, second resolution. In some cases, all of the light pulses are directed through the optical element to the second FoV. In other cases, the first FoV continues to be scanned at a reduced resolution. A rotatable polygon, micromirrors and/or solid state array mechanisms can be used to divert the pulses to the optical element.
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公开(公告)号：US20230003887A1
公开(公告)日：2023-01-05
申请号：US17852578
申请日：2022-06-29
Applicant: Seagate Technology LLC
Inventor： Daniel Joseph Klemme , Daniel Aaron Mohr
Abstract: A light detection and ranging system can have an optical sensor connected to an alias module. The optical sensor can have an emitter along with a first detector and a second detector. The alias module may be configured to characterize a detected return photon as an alias. The configuration of the detectors allows light beam walk to be corrected by the alias module.
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