Patents Assigned to Aeva, Inc.
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Patent number: 12210098Abstract: A light detection and ranging (LIDAR) system is provided that includes a first optical source and a second optical source configured to emit respectively a first optical beam and a second optical beam that are nondegenerate and are chirped antiphase, lensing optics to direct the first and second optical beams toward a target, and collect a first return signal and a second return signal, and a first optical detector and a second optical detector configured to generate a first signal from the first return signal mixed with a first local oscillator and a second signal from the second return signal mixed with the second local oscillator.Type: GrantFiled: November 13, 2023Date of Patent: January 28, 2025Assignee: Aeva, Inc.Inventors: Mina Rezk, Neal Oza
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Patent number: 12181582Abstract: A light detection and ranging (LIDAR) system including a processor to receive a return signal from a target based on an optical beam transmitted towards the target and receive a baseband signal in a time domain based on the return signal. The processor of the LIDAR system further to produce a comparison of signal peaks of the baseband signal with an estimate of LIDAR system noise in the frequency domain, and identify targets based on the comparison.Type: GrantFiled: January 4, 2021Date of Patent: December 31, 2024Assignee: Aeva, Inc.Inventors: Kumar Bhargav Viswanatha, Jose Krause Perin, Rajendra Tushar Moorti, Mina Rezk
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Patent number: 12174315Abstract: A return signal from a target is received based on an optical beam from an optical source of a LiDAR system. The return signal is sampled and converted to a frequency domain, where the return signal comprises a first frequency waveform. A matched filter is selected, where the matched filter comprises a second frequency waveform to match the first frequency waveform. The matched filter is updated by updating a set of coefficients of the second frequency waveform. The return signal is filtered by the updated matched filter to generate a filtered return signal to extract range and velocity information of the target.Type: GrantFiled: May 6, 2022Date of Patent: December 24, 2024Assignee: Aeva, Inc.Inventors: Jose Krause Perin, Mina Rezk, Kumar Bhargav Viswanatha, Rajendra Tushar Moorti
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Patent number: 12174321Abstract: A light detection and ranging (LIDAR) apparatus including free space optics to combine a target signal and a local oscillator signal to generate a combined signal. The LIDAR system also includes a set of multi-mode (MM) waveguides and a demultiplexer including a dispersive element. The demultiplexer configured to disperse, via the dispersive element, each respective wavelength of the combined signal at a corresponding angle, and reflect each respective wavelength of the combined signal to a corresponding MM waveguide of the set of MM waveguides.Type: GrantFiled: August 3, 2023Date of Patent: December 24, 2024Assignee: Aeva, Inc.Inventors: Behsan Behzadi, Omer P. Kocaoglu, Keith Gagne, Oguzhan Avci, Neal N. Oza, Mina Rezk
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Patent number: 12150710Abstract: Detecting position information related to a face, and more particularly to an eyeball in a face, using a detection and ranging system, such as a Radio Detection And Ranging (“RADAR”) system, or a Light Detection And Ranging (“LIDAR”) system. The position information may include a location of the eyeball, translational motion information related to the eyeball (e.g., displacement, velocity, acceleration, jerk, etc.), rotational motion information related to the eyeball (e.g., rotational displacement, rotational velocity, rotational acceleration, etc.) as the eyeball rotates within its socket.Type: GrantFiled: June 12, 2023Date of Patent: November 26, 2024Assignee: Aeva, Inc.Inventors: Richard L. Sebastian, Kendall L. Belsley
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Patent number: 12146962Abstract: A light detection and ranging (LIDAR) system to generate a baseband signal in the time domain from the return signal, where the baseband signal includes frequencies corresponding to LIDAR target ranges; and a signal processing system coupled with the optical processing system to measure energy of the baseband signal in the frequency domain, to compare the energy to an estimate of LIDAR system noise, and to determine a likelihood that an signal peak in the frequency domain indicates a detected target.Type: GrantFiled: December 14, 2020Date of Patent: November 19, 2024Assignee: AEVA, Inc.Inventors: Kumar Bhargav Viswanatha, Jose Krause Perin, Rajendra Tushar Moorti, Mina Rezk
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Patent number: 12111400Abstract: A light detection and ranging (LIDAR) system has a passive modulator to modulate a light signal from an optical source with a low-power mode at a section of a sweep signal to generate a pulsed light signal transmitted towards a target. The LIDAR system has a photodetector to receive a return beam from the target with an amplitude modulated (AM) signal portion and a frequency modulated (FM) signal portion. The LIDAR system determines a target range value for the target based on the AM signal portion and determines a target velocity value for the target based on the FM signal portion.Type: GrantFiled: August 4, 2022Date of Patent: October 8, 2024Assignee: Aeva, Inc.Inventors: Behsan Behzadi, Mina Rezk, Kumar Bhargav Viswanatha, Esha John
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Patent number: 12113331Abstract: Embodiments of the present disclosure include method for sequentially mounting multiple semiconductor devices onto a substrate having a composite metal structure on both the semiconductor devices and the substrate for improved process tolerance and reduced device distances without thermal interference. The mounting process causes “selective” intermixing between the metal layers on the devices and the substrate and increases the melting point of the resulting alloy materials.Type: GrantFiled: June 16, 2023Date of Patent: October 8, 2024Assignee: Aeva, Inc.Inventors: Zhizhong Tang, Pradeep Srinivasan, Kevin Masuda, Wenjing Liang
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Patent number: 12078759Abstract: A light detection and ranging (LIDAR) apparatus is provided that includes a dispersive element and an optical circuit. The optical circuit is to emit a first optical beam having a first frequency and a second optical beam having a second frequency towards the dispersive element to deflect the first optical beam and the second optical beam based on a frequency.Type: GrantFiled: September 27, 2022Date of Patent: September 3, 2024Assignee: AEVA, Inc.Inventors: Mina Rezk, Omer P. Kocaoglu, Oguzhan Avci, Neal N. Oza, Keith Gagne, Behsan Behzadi
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Patent number: 12072417Abstract: A light detection and ranging (LIDAR) system is provided that transmits optical beams and detects return optical beams. The optical beams are frequency modulated with sweeps of a frequency band to produce chirps, each sweep being divisible into multiple sub-sweeps. Multiple simultaneous measurements of first and second beat frequencies are made per sweep produce chirps from the transmitted optical beams and the return optical beams. A signal processor is configured to determine a range and velocity of a target from the multiple simultaneous measurements. At least one of the sweeps is used to produce a custom simultaneous measurement of the beat frequencies for a custom sub-sweep. A custom sub-sweep value of range and velocity is determined from the custom simultaneous measurement, there being at least the sweep value and the custom sub-sweep value of range and velocity for the at least one of the multiple sweeps.Type: GrantFiled: April 27, 2023Date of Patent: August 27, 2024Assignee: Aeva, Inc.Inventors: Mina Rezk, Neeraj Tayal
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Patent number: 12066536Abstract: A light detection and ranging (LiDAR) system according to the present disclosure comprises an optical circulator and one or more photodetectors (PDs). The optical circulator is to transmit the target return signal to the one or more PDs, where the one or more PDs are to mix the target return signal with a local oscillator (LO) signal to generate a signal to extract information of the target.Type: GrantFiled: May 19, 2021Date of Patent: August 20, 2024Assignee: Aeva, Inc.Inventors: Gautam Prabhakar, Behsan Behzadi, Oguzhan Avci, Keith Gagne, Kevin Pollock, Pierre Hicks, Mina Rezk
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Patent number: 12061262Abstract: A system and method including, predicting a first set of Doppler velocity information for a first point set to produce a first predicted set of Doppler velocity information for the first point set; determining one or more Doppler velocity errors based on the first predicted set of Doppler velocity information and a second set of Doppler velocity information; predicting a third set of Doppler velocity information for the second point set to produce a second predicted set of Doppler velocity information for the second point set; determining one or more Doppler velocity errors based on at least one of the second predicted set of Doppler velocity information and a fourth set of Doppler velocity information; and producing a transform that aligns the one or more points of the first point set with the one or more points of the second point set.Type: GrantFiled: March 31, 2022Date of Patent: August 13, 2024Assignee: Aeva, Inc.Inventors: Bruno Hexsel, Heethesh Vhalve Naresh
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Patent number: 12055636Abstract: A system and method receive a first beam pattern from an optical source that includes optical beams transmitted towards a target. The system and method measure a first vertical angle between at least two of the optical beams along a first axis relative to the FMCW LIDAR system. The system and method calculate a second beam pattern based on the first vertical angle and a pivot point. The second beam pattern produces a second vertical angle between the two optical beams. The system and method adjust one or more components from a first position that forms the first beam pattern to a second position that forms the second beam pattern for transmission towards the target. The system and method receive one or more return optical beams from the target, based on the second beam pattern, to produce a plurality of points to form the point cloud.Type: GrantFiled: April 27, 2023Date of Patent: August 6, 2024Assignee: Aeva, Inc.Inventors: Cameron Howard, Sawyer Isaac Cohen, Keith Gagne, Bradley Scot Levin, Pierre Hicks
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Patent number: 12044806Abstract: Various implementations of the invention compensate for “phase wandering” in tunable laser sources. Phase wandering may negatively impact a performance of a lidar system that employ such laser sources, typically by reducing a coherence length/range of the lidar system, an effective bandwidth of the lidar system, a sensitivity of the lidar system, etc. Some implementations of the invention compensate for phase wandering near the laser source and before the output of the laser is directed toward a target. Some implementations of the invention compensate for phase wandering in the target signal (i.e., the output of the laser that is incident on and reflected back from the target). Some implementations of the invention compensate for phase wandering at the laser source and in the target signal.Type: GrantFiled: March 14, 2022Date of Patent: July 23, 2024Assignee: Aeva, Inc.Inventors: Richard L. Sebastian, Kendall L. Belsley, Stephan Schulz
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Patent number: 12041789Abstract: A light detection and ranging (LIDAR) system is provided that includes an optical source to generate and transmit an optical beam, an optical fiber to guide the optical beam to a fiber tip from which the optical beam is emitted, and a first scanning mirror rotatable along at least one axis to steer the optical beam to scan a scene, and collect light incident upon objects in the scene. The system further includes a first lens, disposed between the optical fiber and the first scanning mirror, to focus the optical beam emitted from the optical fiber to converge at a location near a center of rotation of the first scanning mirror, the first scanning mirror to reflect the optical beam towards an optic, the optic, disposed between the first scanning mirror and the scene, to collimate or focus the optical beam reflected from the first scanning mirror, and a signal processor to determine a range of one or more of the objects from a return signal reflected from the one or more of the objects.Type: GrantFiled: December 29, 2021Date of Patent: July 16, 2024Assignee: Aeva, Inc.Inventors: Mina Rezk, Keith Gagne, Neal N. Oza, Omer P. Kocaoglu
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Patent number: 12025700Abstract: Systems and methods for determining ranges to a target disposed behind a transparent surface are described. A target acquisition system receives a plurality of lidar returns, at least some of which are from a target and at least some of which are from a transparent surface. The lidar returns correspond to a portion of a lidar signal generated by a lidar, directed toward the target, and reflected back to the lidar from either the target or the transparent surface. A range measurement for each of the plurality of lidar returns is determined. The target acquisition system generates a histogram of the range measurements. The histogram includes an array including a plurality of range bins. Each range bin defines a unique portion of a predetermined distance out from the lidar. The histogram further includes a count associated with each respective range bin.Type: GrantFiled: August 31, 2020Date of Patent: July 2, 2024Assignee: Aeva, Inc.Inventors: Humayun Chaudhry, Christopher Thompson
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Patent number: 12025750Abstract: The LiDAR system includes a coherent receiver disposed in a reference path. The coherent receiver includes a 90° optical hybrid to receive a portion of an optical beam along the reference path and a local oscillator (LO) signal to generate multiple output signals. The coherent receiver includes a first photodetector to receive a first and a second output signal to generate a first mixed signal, and a second photodetector to receive a third and a fourth output signal to generate a second mixed signal. The LiDAR system further includes a processor to combine the first mixed signal and the second mixed signal to generate a combined reference signal. A negative image of a reference beat frequency signal produced by the optical beam and the LO signal is suppressed to estimate a phase noise of the optical source to determine at least one of range or velocity information of the target.Type: GrantFiled: April 25, 2023Date of Patent: July 2, 2024Assignee: Aeva, Inc.Inventors: Ryan Wayne Going, Kumar Bhargav Viswanatha, Pradeep Srinivasan, Srikanth Kuthuru
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Patent number: 12025441Abstract: A system uses range and Doppler velocity measurements from a lidar system and images from a video system to estimate a six degree-of-freedom trajectory of a target. The system estimates this trajectory in two stages: a first stage in which the range and Doppler measurements from the lidar system along with various feature measurements obtained from the images from the video system are used to estimate first stage motion aspects of the target (i.e., the trajectory of the target); and a second stage in which the images from the video system and the first stage motion aspects of the target are used to estimate second stage motion aspects of the target. Once the second stage motion aspects of the target are estimated, a three-dimensional image of the target may be generated.Type: GrantFiled: July 4, 2022Date of Patent: July 2, 2024Assignee: Aeva, Inc.Inventors: Richard L. Sebastian, Anatoley T. Zheleznyak
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Patent number: 12019192Abstract: A light detection and ranging (LIDAR) system to transmit optical beams including at least up-chirp frequency and at least one down-chirp frequency toward targets in a field of view of the LIDAR system and receive returned signals of the up-chirp and the down-chirp as reflected from the targets. The LIDAR system may determine multiple frequency peaks associated with the target based on the returned signals. Upon determining that at least one of the multiple frequency peaks is within one or more sets of frequency ranges, the LIDAR system may combine an in-phase signal and a quadrature signal of the returned signals to generate a complex signal that enables determining whether the at least one of the multiple frequency peaks is associated with ghosting. Upon determining to be free from ghosting, the LIDAR system determines one or more of the target location, a target velocity, and a target reflectivity.Type: GrantFiled: November 28, 2022Date of Patent: June 25, 2024Assignee: Aeva, Inc.Inventors: Esha John, Jose Krause Perin, Kumar Bhargav Viswanatha, Rajendra Tushar Moorti, James Nakamura, Carlo Giustini
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Patent number: 12013497Abstract: A light detection and ranging (LIDAR) system includes an automatic gain control (AGC) unit to reduce the dynamic range, reducing processing power and saving circuit area and cost. The system detects a return beam of a light signal transmitted to a target, having a first dynamic range in a time domain. An analog to digital converter (ADC) generates a digital signal based on the return beam. A processor can perform time domain processing on the digital signal, convert the digital signal from the time domain to a frequency domain, and perform frequency domain processing on the digital signal in the frequency domain. The AGC unit can measure a power of the return beam, and apply variable gain in the frequency domain to reduce a dynamic range of the return beam to a second dynamic range lower than the first dynamic range.Type: GrantFiled: January 12, 2023Date of Patent: June 18, 2024Assignee: Aeva, Inc.Inventors: Esha John, Kumar Bhargav Viswanatha, Rajendra Tushar Moorti, Mina Rezk