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11.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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13.发明申请公开(公告)号：US20230021576A1
公开(公告)日：2023-01-26
申请号：US17868906
申请日：2022-07-20
Applicant: Seagate Technology LLC
Inventor： Daniel Joseph Klemme , Aditya Jain
IPC: G01S7/481 , G01S17/26 , G02B6/12 , G01S7/4914
Abstract: Method and apparatus for enhancing resolution in a light detection and ranging (LiDAR) system. In some embodiments, an emitter emits light in the form of multiplexed beams of randomized, multiple wavelengths across a field of view (FoV). A detector uses one or more detection channels to detect the multiplexed beams reflected from a target within the FoV to decode range information associated with the target. The multiplexed beams may be generated by multiple light sources such as laser diodes, or a single source such as a frequency comb device. Randomization may be applied via a pseudorandom bit sequence modulator, and multiplexing/demultiplexing may be performed using waveguides and micro-resonance rings (MRRs). The multiplexed beam may be emitted using an optical phase array (OPA) integrated circuit device to scan the FoV simultaneously using the different wavelengths. The range information can be used to adaptively adjust the wavelengths in a subsequent scan.
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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：US20230003883A1
公开(公告)日：2023-01-05
申请号：US17853475
申请日：2022-06-29
Applicant: Seagate Technology LLC
Inventor： Daniel Joseph Klemme , Aditya Jain
IPC: G01S17/26
Abstract: A light detection and ranging system can have a controller connected to a light beam emitter. To provide enhanced resolution compared to frequency modulated continuous wave light detection and ranging systems, the controller may be configured to provide coherent light detection and ranging by utilizing pixel-based phase modulated continuous wave light emission from the emitter.
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Patent Agency Ranking
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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公开(公告)号：US20230003846A1
公开(公告)日：2023-01-05
申请号：US17853637
申请日：2022-06-29
Applicant: Seagate Technology LLC
Inventor： Daniel Joseph Klemme , Kevin A. Gomez
Abstract: A light detection and ranging system can have a photonic integrated circuit coupled to a grating coupler and a scanning array. The scanning array may consist of a mechanical actuator configured to move at least one detector in response to a calibration operation. As a result, coherent downrange detection can be achieved with light modulation, optical mixing, and balanced detection.
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19.发明申请公开(公告)号：US20220413140A1
公开(公告)日：2022-12-29
申请号：US17833066
申请日：2022-06-06
Applicant: Seagate Technology LLC
Inventor： Daniel Joseph Klemme
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：US20210273795A1
公开(公告)日：2021-09-02
申请号：US16804607
申请日：2020-02-28
Applicant: Seagate Technology LLC
Inventor： Eric James Dahlberg , Kevin Arthur Gomez , Dan Mohr , Daniel Joseph Klemme
Abstract: Systems and methods are disclosed for trusted imaging. In some examples, a trusted imaging device can emit a patterned light onto a real-world scene while an image sensor (e.g. photo or video) generates data representative of the real-world scene. The data can be processed to attempt to recover a pattern of the patterned light from the data. Whether, or to what extent, the pattern can be recovered can be determinative of a trustworthiness of the data from the image sensor. In further examples, the image data can be encrypted, as well as the imaging device output. In still further examples, a depth map of the image data can also be used to determine the trustworthiness of the image data.
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