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No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
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1 EP3652556A1
AGGREGATING NON-IMAGING SPAD ARCHITECTURE FOR FULL DIGITAL MONOLITHIC, FRAME AVERAGING RECEIVERS
Publication/Patent Number: EP3652556A1 Publication Date: 2020-05-20 Application Number: 18844650.4 Filing Date: 2018-08-02 Inventor: Onal, Caner   Droz, Pierre-yves   Assignee: Waymo LLC   IPC: G01S7/486
2 US10677899B2
Aggregating non-imaging SPAD architecture for full digital monolithic, frame averaging receivers
Publication/Patent Number: US10677899B2 Publication Date: 2020-06-09 Application Number: 15/670,082 Filing Date: 2017-08-07 Inventor: Onal, Caner   Droz, Pierre-yves   Assignee: Waymo LLC   IPC: G01S7/48 Abstract: The present disclosure relates to systems and methods that include a monolithic, single-chip receiver. An example system includes a plurality of macropixels, each made up of an array of single photon avalanche diodes (SPADs). The system also includes a plurality of pipelined adders communicatively coupled to a respective portion of the plurality of macropixels. The system additionally includes a controller configured to carry out operations. The operations include during a listening period, receiving, at each pipelined adder of the plurality of pipelined adders, respective photosignals from the respective portion of the plurality of macropixels. The operations also include causing each pipelined adder of the plurality of pipelined adders to provide an output that includes a series of frames that provide an average number of SPADs of the respective portion of the plurality of macropixels that were triggered during a given listening period. The present disclosure relates to systems and methods that include a monolithic, single-chip receiver. An example system includes a plurality of macropixels, each made up of an array of single photon avalanche diodes (SPADs). The system also includes a plurality of pipelined ...More Less
3 US10608048B2
Select device for memory cell applications
Publication/Patent Number: US10608048B2 Publication Date: 2020-03-31 Application Number: 16/123,073 Filing Date: 2018-09-06 Inventor: Wells, David H.   Cardon, Christopher D.   Onal, Caner   Assignee: Micron Technology, Inc.   IPC: G11C11/00 Abstract: The present disclosure includes select devices and methods of using select device for memory cell applications. An example select device includes a first electrode having a particular geometry, a semiconductor material formed on the first electrode and a second electrode having the particular geometry with formed on the semiconductor material, wherein the select device is configured to snap between resistive states in response to signals that are applied to the select device. The present disclosure includes select devices and methods of using select device for memory cell applications. An example select device includes a first electrode having a particular geometry, a semiconductor material formed on the first electrode and a second electrode having ...More Less
4 US2020052144A1
Controlling Detection Time in Photodetectors
Publication/Patent Number: US2020052144A1 Publication Date: 2020-02-13 Application Number: 16/656,891 Filing Date: 2019-10-18 Inventor: Onal, Caner   Verghese, Simon   Droz, Pierre-yves   Assignee: Waymo LLC   IPC: H01L31/107 Abstract: Example embodiments relate to controlling detection time in photodetectors. An example embodiment includes a device. The device includes a substrate. The device also includes a photodetector coupled to the substrate. The photodetector is arranged to detect light emitted from a light source that irradiates a top surface of the device. A depth of the substrate is at most 100 times a diffusion length of a minority carrier within the substrate so as to mitigate dark current arising from minority carriers photoexcited in the substrate based on the light emitted from the light source. Example embodiments relate to controlling detection time in photodetectors. An example embodiment includes a device. The device includes a substrate. The device also includes a photodetector coupled to the substrate. The photodetector is arranged to detect light emitted from a ...More Less
5 EP3676632A1
COMBINATION PHOTODETECTOR ARRAYS FOR EXTENDED DYNAMIC RANGE
Publication/Patent Number: EP3676632A1 Publication Date: 2020-07-08 Application Number: 18786530.8 Filing Date: 2018-09-24 Inventor: Onal, Caner   Gassend, Blaise   Droz, Pierre-yves   Assignee: Waymo LLC   IPC: G01S7/486
6 US2020141716A1
Methods and Systems for Mapping Retroreflectors
Publication/Patent Number: US2020141716A1 Publication Date: 2020-05-07 Application Number: 16/272,258 Filing Date: 2019-02-11 Inventor: Droz, Pierre-yves   Onal, Caner   Marx, Michael   Gassend, Blaise   Assignee: Waymo LLC   IPC: G01B9/02 Abstract: One example method involves a light detection and ranging (LIDAR) device focusing light from a target region in a scene for receipt by a detector. The method also involves emitting a primary light pulse. The method also involves directing, via one or more optical elements, the primary light pulse toward the target region. The primary light pulse illuminates the target region according to a primary light intensity of the primary light pulse. The method also involves emitting a secondary light pulse. At least a portion of the secondary light pulse illuminates the target region according to a secondary light intensity of the secondary light pulse. The secondary light intensity is less than the primary light intensity. One example method involves a light detection and ranging (LIDAR) device focusing light from a target region in a scene for receipt by a detector. The method also involves emitting a primary light pulse. The method also involves directing, via one or more optical elements, the ...More Less
7 US2020064473A1
Limitation of Noise on Light Detectors using an Aperture
Publication/Patent Number: US2020064473A1 Publication Date: 2020-02-27 Application Number: 16/671,399 Filing Date: 2019-11-01 Inventor: Droz, Pierre-yves   Gassend, Blaise   Onal, Caner   Hutchison, David   Assignee: Waymo LLC   IPC: G01S17/08 Abstract: The present disclosure relates to limitation of noise on light detectors using an aperture. One example embodiment includes a system. The system includes a lens disposed relative to a scene and configured to focus light from the scene onto a focal plane. The system also includes an aperture defined within an opaque material disposed at the focal plane of the lens. The aperture has a cross-sectional area. In addition, the system includes an array of light detectors disposed on a side of the focal plane opposite the lens and configured to intercept and detect diverging light focused by the lens and transmitted through the aperture. A cross-sectional area of the array of light detectors that intercepts the diverging light is greater than the cross-sectional area of the aperture. The present disclosure relates to limitation of noise on light detectors using an aperture. One example embodiment includes a system. The system includes a lens disposed relative to a scene and configured to focus light from the scene onto a focal plane. The system also includes ...More Less
8 US2020142069A1
Time-of-Flight Sensor with Structured Light Illuminator
Publication/Patent Number: US2020142069A1 Publication Date: 2020-05-07 Application Number: 16/177,626 Filing Date: 2018-11-01 Inventor: Onal, Caner   Schleuning, David   Hermalyn, Brendan   Verghese, Simon   Mccauley, Alex   White, Brandyn   Zhilinsky, Ury   Assignee: Waymo LLC   IPC: G01S17/89 Abstract: The present disclosure relates to systems and methods that provide information about a scene based on a time-of-flight (ToF) sensor and a structured light pattern. In an example embodiment, a sensor system could include at least one ToF sensor configured to receive light from a scene. The sensor system could also include at least one light source configured to emit a structured light pattern and a controller that carries out operations. The operations include causing the at least one light source to illuminate at least a portion of the scene with the structured light pattern and causing the at least one ToF sensor to provide information indicative of a depth map of the scene based on the structured light pattern. The present disclosure relates to systems and methods that provide information about a scene based on a time-of-flight (ToF) sensor and a structured light pattern. In an example embodiment, a sensor system could include at least one ToF sensor configured to receive light from a ...More Less
9 US2020041620A1
Hybrid Time-of-Flight and Imager Module
Publication/Patent Number: US2020041620A1 Publication Date: 2020-02-06 Application Number: 16/229,193 Filing Date: 2018-12-21 Inventor: Onal, Caner   Schleuning, David   Hermalyn, Brendan   Verghese, Simon   Mccauley, Alex   White, Brandyn   Zhilinsky, Ury   Assignee: Waymo LLC   IPC: G01S7/486 Abstract: The present disclosure relates to systems and methods that provide both an image of a scene and depth information for the scene. An example system includes at least one time-of-flight (ToF) sensor and an imaging sensor. The ToF sensor and the imaging sensor are configured to receive light from a scene. The system also includes at least one light source and a controller that carries out operations. The operations include causing the at least one light source to illuminate at least a portion of the scene with illumination light according to an illumination schedule. The operations also include causing the at least one ToF sensor to provide information indicative of a depth map of the scene based on the illumination light. The operations additionally include causing the imaging sensor to provide information indicative of an image of the scene based on the illumination light. The present disclosure relates to systems and methods that provide both an image of a scene and depth information for the scene. An example system includes at least one time-of-flight (ToF) sensor and an imaging sensor. The ToF sensor and the imaging sensor are configured to ...More Less
10 US2019041502A1
Aggregating Non-imaging SPAD Architecture for Full Digital Monolithic, Frame Averaging Receivers
Publication/Patent Number: US2019041502A1 Publication Date: 2019-02-07 Application Number: 15/670,082 Filing Date: 2017-08-07 Inventor: Onal, Caner   Droz, Pierre-yves   Assignee: Waymo LLC   IPC: G01S7/486 Abstract: The present disclosure relates to systems and methods that include a monolithic, single-chip receiver. An example system includes a plurality of macropixels, each made up of an array of single photon avalanche diodes (SPADs). The system also includes a plurality of pipelined adders communicatively coupled to a respective portion of the plurality of macropixels. The system additionally includes a controller configured to carry out operations. The operations include during a listening period, receiving, at each pipelined adder of the plurality of pipelined adders, respective photosignals from the respective portion of the plurality of macropixels. The operations also include causing each pipelined adder of the plurality of pipelined adders to provide an output that includes a series of frames that provide an average number of SPADs of the respective portion of the plurality of macropixels that were triggered during a given listening period. The present disclosure relates to systems and methods that include a monolithic, single-chip receiver. An example system includes a plurality of macropixels, each made up of an array of single photon avalanche diodes (SPADs). The system also includes a plurality of pipelined ...More Less
11 US10304987B2
Hybrid integration of photodetector array with digital front end
Publication/Patent Number: US10304987B2 Publication Date: 2019-05-28 Application Number: 15/972,471 Filing Date: 2018-05-07 Inventor: Droz, Pierre-yves   Onal, Caner   Assignee: Waymo LLC   IPC: H01L27/146 Abstract: The present disclosure relates to optical receiver systems. An example optical receiver system includes a first substrate with a plurality of photodetectors and a bias circuit. The bias circuit is electrically coupled to each photodetector of the plurality of photodetectors. The bias circuit is configured to provide a bias voltage to each photodetector. The optical receiver system also includes a plurality of capacitors. Each capacitor of the plurality of capacitors is electrically-coupled to a respective photodetector of the plurality of photodetectors. The optical receiver system also includes a second substrate with a read-out circuit having a plurality of channels. Each channel of the plurality of channels is capacitively-coupled to a respective photodetector via the respective capacitor. The present disclosure relates to optical receiver systems. An example optical receiver system includes a first substrate with a plurality of photodetectors and a bias circuit. The bias circuit is electrically coupled to each photodetector of the plurality of photodetectors. The ...More Less
12 US2019237609A1
Controlling Detection Time in Photodetectors
Publication/Patent Number: US2019237609A1 Publication Date: 2019-08-01 Application Number: 15/939,619 Filing Date: 2018-03-29 Inventor: Droz, Pierre-yves   Verghese, Simon   Onal, Caner   Assignee: Waymo LLC   IPC: H01L31/18 Abstract: Example embodiments relate to controlling detection time in photodetectors. An example embodiment includes a device. The device includes a substrate. The device also includes a photodetector coupled to the substrate. The photodetector is arranged to detect light emitted from a light source that irradiates a top surface of the device. A depth of the substrate is at most 100 times a diffusion length of a minority carrier within the substrate so as to mitigate dark current arising from minority carriers photoexcited in the substrate based on the light emitted from the light source. Example embodiments relate to controlling detection time in photodetectors. An example embodiment includes a device. The device includes a substrate. The device also includes a photodetector coupled to the substrate. The photodetector is arranged to detect light emitted from a ...More Less
13 US2019006420A1
SELECT DEVICE FOR MEMORY CELL APPLICATIONS
Publication/Patent Number: US2019006420A1 Publication Date: 2019-01-03 Application Number: 16/123,073 Filing Date: 2018-09-06 Inventor: Wells, David H.   Cardon, Christopher D.   Onal, Caner   Assignee: Micron Technology, Inc.   IPC: H01L27/24 Abstract: The present disclosure includes select devices and methods of using select device for memory cell applications. An example select device includes a first electrode having a particular geometry, a semiconductor material formed on the first electrode and a second electrode having the particular geometry with formed on the semiconductor material, wherein the select device is configured to snap between resistive states in response to signals that are applied to the select device. The present disclosure includes select devices and methods of using select device for memory cell applications. An example select device includes a first electrode having a particular geometry, a semiconductor material formed on the first electrode and a second electrode having ...More Less
14 US2019094361A1
Combination Photodetector Arrays for Extended Dynamic Range
Publication/Patent Number: US2019094361A1 Publication Date: 2019-03-28 Application Number: 15/714,435 Filing Date: 2017-09-25 Inventor: Onal, Caner   Gassend, Blaise   Droz, Pierre-yves   Assignee: Waymo LLC   IPC: G01S17/08 Abstract: The present disclosure relates to methods and systems that improve the dynamic range of LIDAR systems. An example system includes a plurality of single-photon photodetectors and at least one additional photodetector monolithically integrated on a shared substrate. The plurality of single-photon photodetectors and the at least one additional photodetector are configured to detect light from a shared field of view. The system also includes a controller configured to carry out operations. The operations include: receiving respective photodetector signals from the plurality of single-photon photodetectors and the at least one additional photodetector; selecting a photodetector signal from at least two of: the two received photodetector signals and a combined photodetector signal formed by combining the two received photodetector signals; and determining an intensity of light in the field of view based on the selected photodetector signal. The present disclosure relates to methods and systems that improve the dynamic range of LIDAR systems. An example system includes a plurality of single-photon photodetectors and at least one additional photodetector monolithically integrated on a shared substrate. The plurality ...More Less
15 US10490687B2
Controlling detection time in photodetectors
Publication/Patent Number: US10490687B2 Publication Date: 2019-11-26 Application Number: 15/939,619 Filing Date: 2018-03-29 Inventor: Onal, Caner   Verghese, Simon   Droz, Pierre-yves   Assignee: Waymo LLC   IPC: H01L31/107 Abstract: Example embodiments relate to controlling detection time in photodetectors. An example embodiment includes a device. The device includes a substrate. The device also includes a photodetector coupled to the substrate. The photodetector is arranged to detect light emitted from a light source that irradiates a top surface of the device. A depth of the substrate is at most 100 times a diffusion length of a minority carrier within the substrate so as to mitigate dark current arising from minority carriers photoexcited in the substrate based on the light emitted from the light source. Example embodiments relate to controlling detection time in photodetectors. An example embodiment includes a device. The device includes a substrate. The device also includes a photodetector coupled to the substrate. The photodetector is arranged to detect light emitted from a ...More Less
16 EP3497413A1
LIMITATION OF NOISE ON LIGHT DETECTORS USING AN APERTURE
Publication/Patent Number: EP3497413A1 Publication Date: 2019-06-19 Application Number: 17860316.3 Filing Date: 2017-10-04 Inventor: Droz, Pierre-yves   Gassend, Blaise   Onal, Caner   Hutchison, David   Assignee: Waymo LLC   IPC: G01J1/44
17 US10396117B2
Optical receiver systems and devices with detector array including a plurality of substrates disposed in an edge to edge array
Publication/Patent Number: US10396117B2 Publication Date: 2019-08-27 Application Number: 15/294,335 Filing Date: 2016-10-14 Inventor: Onal, Caner   Droz, Pierre-yves   Mccann, William   Mattos, Laila   Assignee: Waymo LLC   IPC: G01S7/481 Abstract: The present disclosure relates to optical receiver systems. An example system includes a plurality of substrates disposed in an edge-to-edge array along a primary axis. Each respective substrate of the plurality of substrates includes a plurality of detector elements. Each detector element of the plurality of detector elements generates a respective detector signal in response to light received by the detector element. The plurality of detector elements is arranged with a detector pitch between adjacent detector elements of the plurality of detector elements. Each respective substrate of the plurality of substrates also includes a signal receiver circuit configured to receive the detector signals generated by the plurality of detector elements. The respective substrates of the plurality of substrates are disposed such that the detector pitch is maintained between adjacent detector elements on their respective substrates. The present disclosure relates to optical receiver systems. An example system includes a plurality of substrates disposed in an edge-to-edge array along a primary axis. Each respective substrate of the plurality of substrates includes a plurality of detector elements. Each ...More Less
18 US10502830B2
Limitation of noise on light detectors using an aperture
Publication/Patent Number: US10502830B2 Publication Date: 2019-12-10 Application Number: 15/292,251 Filing Date: 2016-10-13 Inventor: Droz, Pierre-yves   Gassend, Blaise   Onal, Caner   Hutchison, David   Assignee: Waymo LLC   IPC: G01J1/42 Abstract: The present disclosure relates to limitation of noise on light detectors using an aperture. One example embodiment includes a system. The system includes a lens disposed relative to a scene and configured to focus light from the scene onto a focal plane. The system also includes an aperture defined within an opaque material disposed at the focal plane of the lens. The aperture has a cross-sectional area. In addition, the system includes an array of light detectors disposed on a side of the focal plane opposite the lens and configured to intercept and detect diverging light focused by the lens and transmitted through the aperture. A cross-sectional area of the array of light detectors that intercepts the diverging light is greater than the cross-sectional area of the aperture. The present disclosure relates to limitation of noise on light detectors using an aperture. One example embodiment includes a system. The system includes a lens disposed relative to a scene and configured to focus light from the scene onto a focal plane. The system also includes ...More Less
19 US10379540B2
Light detection and ranging (LIDAR) device having multiple receivers
Publication/Patent Number: US10379540B2 Publication Date: 2019-08-13 Application Number: 15/295,619 Filing Date: 2016-10-17 Inventor: Droz, Pierre-yves   Onal, Caner   Mccann, William   Fidric, Bernard   Gutnik, Vadim   Mattos, Laila   Pardhan, Rahim   Assignee: Waymo LLC   IPC: G01S7/491 Abstract: Described herein is a LIDAR device that may include a transmitter, first and second receivers, and a rotating platform. The transmitter may be configured to emit light having a vertical beam width. The first receiver may be configured to detect light at a first resolution while scanning the environment with a first FOV and the second receiver may be configured to detect light at a second resolution while scanning the environment with a second FOV. In this arrangement, the first resolution may be higher than the second resolution, the first FOV may be at least partially different from the second FOV, and the vertical beam width may encompass at least a vertical extent of the first and second FOVs. Further, the rotating platform may be configured to rotate about an axis such that the transmitter and first and second receivers each move based on the rotation. Described herein is a LIDAR device that may include a transmitter, first and second receivers, and a rotating platform. The transmitter may be configured to emit light having a vertical beam width. The first receiver may be configured to detect light at a first resolution while ...More Less
20 US2019317503A1
Light Detection and Ranging (LIDAR) Device having Multiple Receivers
Publication/Patent Number: US2019317503A1 Publication Date: 2019-10-17 Application Number: 16/453,401 Filing Date: 2019-06-26 Inventor: Droz, Pierre-yves   Onal, Caner   Mccann, William   Fidric, Bernard   Gutnik, Vadim   Mattos, Laila   Pardhan, Rahim   Assignee: Waymo LLC   IPC: G05D1/02 Abstract: Described herein is a LIDAR device that may include a transmitter, first and second receivers, and a rotating platform. The transmitter may be configured to emit light having a vertical beam width. The first receiver may be configured to detect light at a first resolution while scanning the environment with a first FOV and the second receiver may be configured to detect light at a second resolution while scanning the environment with a second FOV. In this arrangement, the first resolution may be higher than the second resolution, the first FOV may be at least partially different from the second FOV, and the vertical beam width may encompass at least a vertical extent of the first and second FOVs. Further, the rotating platform may be configured to rotate about an axis such that the transmitter and first and second receivers each move based on the rotation. Described herein is a LIDAR device that may include a transmitter, first and second receivers, and a rotating platform. The transmitter may be configured to emit light having a vertical beam width. The first receiver may be configured to detect light at a first resolution while ...More Less