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No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
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1 US10535977B1
GaNFET as energy store for fast laser pulser
Publication/Patent Number: US10535977B1 Publication Date: 2020-01-14 Application Number: 16/177,281 Filing Date: 2018-10-31 Inventor: Gassend, Blaise   Droz, Pierre-yves   Assignee: Waymo LLC   IPC: H01S5/042 Abstract: The present disclosure relates to systems and circuits that may facilitate sub-5 nanosecond laser diode operation. An example system includes a trigger source, a laser diode, a first field effect transistor and a second field effect transistor. The laser diode is coupled to a supply voltage and a drain terminal of the first field effect transistor. A source terminal of the first field effect transistor is coupled to ground and a gate terminal of the first field effect transistor is coupled to the trigger source. A drain terminal of the second field effect transistor is coupled to the supply voltage. A source terminal of the second field effect transistor and a gate terminal of the second field effect transistor are coupled to ground. In an example embodiment, the first field effect transistor and the second field effect transistor comprise gallium nitride (GaN). The present disclosure relates to systems and circuits that may facilitate sub-5 nanosecond laser diode operation. An example system includes a trigger source, a laser diode, a first field effect transistor and a second field effect transistor. The laser diode is coupled to a ...More Less
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 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
4 EP3274737B1
METHODS AND SYSTEMS FOR LIDAR OPTICS ALIGNMENT
Publication/Patent Number: EP3274737B1 Publication Date: 2020-06-24 Application Number: 16714672.9 Filing Date: 2016-03-18 Inventor: Pennecot, Gaetan   Droz, Pierre-yves   Assignee: WAYMO LLC   IPC: G01S7/497
5 US2020225410A1
Array of Waveguide Diffusers for Light Detection using an Aperture
Publication/Patent Number: US2020225410A1 Publication Date: 2020-07-16 Application Number: 16/830,680 Filing Date: 2020-03-26 Inventor: Droz, Pierre-yves   Hutchison, David   Assignee: Waymo LLC   IPC: G02B6/08 Abstract: The present disclosure relates to limitation of noise on light detectors using an aperture. One example implementation includes a system. The system includes a lens that focuses light from a scene toward a focal plane. The system also includes an aperture defined within an opaque material. The system also includes a plurality of waveguides. A given waveguide of the plurality has an input end that receives a portion of light transmitted through the aperture, and guides the received portion toward an output end of the given waveguide. A cross-sectional area of the guided portion at the output end is greater than a cross-sectional area of the received portion at the input end. The system also includes an array of light detectors that detects the guided light transmitted through the output end. The present disclosure relates to limitation of noise on light detectors using an aperture. One example implementation includes a system. The system includes a lens that focuses light from a scene toward a focal plane. The system also includes an aperture defined within an ...More Less
6 US10605984B2
Array of waveguide diffusers for light detection using an aperture
Publication/Patent Number: US10605984B2 Publication Date: 2020-03-31 Application Number: 15/366,746 Filing Date: 2016-12-01 Inventor: Droz, Pierre-yves   Hutchison, David   Assignee: Waymo LLC   IPC: G01C3/08 Abstract: The present disclosure relates to limitation of noise on light detectors using an aperture. One example implementation includes a system. The system includes a lens that focuses light from a scene toward a focal plane. The system also includes an aperture defined within an opaque material. The system also includes a plurality of waveguides. A given waveguide of the plurality has an input end that receives a portion of light transmitted through the aperture, and guides the received portion toward an output end of the given waveguide. A cross-sectional area of the guided portion at the output end is greater than a cross-sectional area of the received portion at the input end. The system also includes an array of light detectors that detects the guided light transmitted through the output end. The present disclosure relates to limitation of noise on light detectors using an aperture. One example implementation includes a system. The system includes a lens that focuses light from a scene toward a focal plane. The system also includes an aperture defined within an ...More Less
7 US10534143B1
Methods for optical system manufacturing
Publication/Patent Number: US10534143B1 Publication Date: 2020-01-14 Application Number: 16/136,429 Filing Date: 2018-09-20 Inventor: Droz, Pierre-yves   Schleuning, David   Assignee: Waymo LLC   IPC: G02B6/32 Abstract: Systems and methods described herein relate to the manufacture of optical elements and optical systems. An example method includes providing a first substrate that has a plurality of light-emitter devices disposed on a first surface. The method includes providing a second substrate that has a mounting surface defining a reference plane. The method includes forming a structure and an optical spacer on the mounting surface of the second substrate. The method additionally includes coupling the first and second substrates together such that the first surface of the first substrate faces the mounting surface of the second substrate at an angle with respect to the reference plane. Systems and methods described herein relate to the manufacture of optical elements and optical systems. An example method includes providing a first substrate that has a plurality of light-emitter devices disposed on a first surface. The method includes providing a second ...More Less
8 US2020103510A1
Light Detection and Ranging (LIDAR) Device with an Off-Axis Receiver
Publication/Patent Number: US2020103510A1 Publication Date: 2020-04-02 Application Number: 16/700,543 Filing Date: 2019-12-02 Inventor: Droz, Pierre-yves   Verghese, Simon   Assignee: Waymo LLC   IPC: G01S7/497 Abstract: In one example, a LIDAR device includes a light sources that emits light and a transmit lens that directs the emitted light to illuminate a region of an environment with a field-of-view defined by the transmit lens. The LIDAR device also includes a receive lens that focuses at least a portion of incoming light propagating from the illuminated region of the environment along a predefined optical path. The LIDAR device also includes an array of light detectors positioned along the predefined optical path. The LIDAR device also includes an offset light detector positioned outside the predefined optical path. The LIDAR device also includes a controller that determines whether collected sensor data from the array of light detectors includes data associated with another light source different than the light source of the device based on output from the offset light detector. In one example, a LIDAR device includes a light sources that emits light and a transmit lens that directs the emitted light to illuminate a region of an environment with a field-of-view defined by the transmit lens. The LIDAR device also includes a receive lens that focuses at ...More Less
9 US2020110233A1
Methods for Optical System Manufacturing
Publication/Patent Number: US2020110233A1 Publication Date: 2020-04-09 Application Number: 16/705,406 Filing Date: 2019-12-06 Inventor: Droz, Pierre-yves   Schleuning, David   Assignee: Waymo LLC   IPC: G02B6/42 Abstract: Systems and methods described herein relate to the manufacture of optical elements and optical systems. An example method includes providing a first substrate that has a plurality of light-emitter devices disposed on a first surface. The method includes providing a second substrate that has a mounting surface defining a reference plane. The method includes forming a structure and an optical spacer on the mounting surface of the second substrate. The method additionally includes coupling the first and second substrates together such that the first surface of the first substrate faces the mounting surface of the second substrate at an angle with respect to the reference plane. Systems and methods described herein relate to the manufacture of optical elements and optical systems. An example method includes providing a first substrate that has a plurality of light-emitter devices disposed on a first surface. The method includes providing a second ...More Less
10 US2020072662A1
Light Detection using an Aperture
Publication/Patent Number: US2020072662A1 Publication Date: 2020-03-05 Application Number: 16/679,006 Filing Date: 2019-11-08 Inventor: Droz, Pierre-yves   Hutchison, David   Assignee: Waymo LLC   IPC: G01J1/04 Abstract: The present disclosure relates to limitation of noise on light detectors using an aperture. One example implementation includes a system. The system includes a lens disposed relative to a scene. The lens focuses light from the scene. The system also includes an aperture defined within an opaque material. The system also includes a waveguide having a first side that receives light focused by the lens and transmitted through the aperture. The waveguide guides the received light toward a second side of the waveguide opposite to the first side. The waveguide has a third side extending between the first side and the second side. The system also includes an array of light detectors that intercepts and detects light propagating out of the third side of the waveguide. The present disclosure relates to limitation of noise on light detectors using an aperture. One example implementation includes a system. The system includes a lens disposed relative to a scene. The lens focuses light from the scene. The system also includes an aperture defined ...More Less
11 US10649160B2
Transmitter devices having bridge structures
Publication/Patent Number: US10649160B2 Publication Date: 2020-05-12 Application Number: 16/669,488 Filing Date: 2019-10-30 Inventor: Droz, Pierre-yves   Schleuning, David   Tazzoli, Augusto   Assignee: Waymo LLC   IPC: G02B6/42 Abstract: The present disclosure relates to optical systems and methods for their manufacture. An example system includes a first substrate that has at least one bridge structure. The bridge structure has a first surface with one or more light-emitter devices disposed on it. The system also includes a second substrate that has a mounting surface that defines a reference plane. The second substrate includes a structure and an optical spacer on the mounting surface. The first and second substrates are coupled together such that the first surface of the first substrate faces the second substrate at an angle with respect to the reference plane. The system also includes at least one spacer coupled to the mounting surface. The at least one spacer is in physical contact with the one or more light-emitter devices. The present disclosure relates to optical systems and methods for their manufacture. An example system includes a first substrate that has at least one bridge structure. The bridge structure has a first surface with one or more light-emitter devices disposed on it. The system ...More Less
12 EP3679413A1
METHOD FOR MANUFACTURING LIGHT GUIDE ELEMENTS
Publication/Patent Number: EP3679413A1 Publication Date: 2020-07-15 Application Number: 18796524.9 Filing Date: 2018-10-04 Inventor: Fidric, Bernard   Droz, Pierre-yves   Hutchison, David   Assignee: Waymo LLC   IPC: G02B6/42
13 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
14 US10578718B1
Rotatable mirror assemblies
Publication/Patent Number: US10578718B1 Publication Date: 2020-03-03 Application Number: 15/445,971 Filing Date: 2017-02-28 Inventor: Droz, Pierre-yves   Ulrich, Drew E.   Assignee: Waymo LLC   IPC: G01S7/481 Abstract: Rotatable mirror assemblies and light detection and ranging systems containing rotatable mirror assemblies are described herein. An example rotatable mirror assembly may include (1) a housing having a top end, a bottom end, and a longitudinal axis intersecting the top and bottom ends, and (2) a set of reflective surfaces, where each reflective surface in the set is coupled to the top end of the housing and the bottom end of the housing such that each reflective surface possesses limited freedom of movement with respect to the housing. Rotatable mirror assemblies and light detection and ranging systems containing rotatable mirror assemblies are described herein. An example rotatable mirror assembly may include (1) a housing having a top end, a bottom end, and a longitudinal axis intersecting the top and bottom ...More Less
15 US2020052531A1
Contactless Electrical Coupling for a Rotatable LIDAR Device
Publication/Patent Number: US2020052531A1 Publication Date: 2020-02-13 Application Number: 16/658,499 Filing Date: 2019-10-21 Inventor: Lenius, Samuel William   Droz, Pierre-yves   Assignee: Waymo LLC   IPC: H02J50/80 Abstract: A rotatable LIDAR device including contactless electrical couplings is disclosed. An example rotatable LIDAR device includes a vehicle electrical coupling including (i) a first conductive ring, (ii) a second conductive ring, and (iii) a first coil. The example rotatable LIDAR device further includes a LIDAR electrical coupling including (i) a third conductive ring, (ii) a fourth conductive ring, and (iii) a second coil. The example rotatable LIDAR device still further includes a rotatable LIDAR electrically coupled to the LIDAR electrical coupling. The first conductive ring and the third conductive ring form a first capacitor configured to transmit communications to the rotatable LIDAR, the second conductive ring and the fourth conductive ring form a second capacitor configured to transmit communications from the rotatable LIDAR, and the first coil and the second coil form a transformer configured to provide power to the rotatable LIDAR. A rotatable LIDAR device including contactless electrical couplings is disclosed. An example rotatable LIDAR device includes a vehicle electrical coupling including (i) a first conductive ring, (ii) a second conductive ring, and (iii) a first coil. The example rotatable LIDAR ...More Less
16 US10707652B1
Vacuum fixture
Publication/Patent Number: US10707652B1 Publication Date: 2020-07-07 Application Number: 16/204,406 Filing Date: 2018-11-29 Inventor: Tazzoli, Augusto   Droz, Pierre-yves   Golshan, Nathaniel   Assignee: Waymo LLC   IPC: H01S5/40 Abstract: An example method includes stacking a plurality of laser diode bars proximate an alignment plate. Each respective laser diode bar has a front edge through which the respective laser diode bar emits light. The alignment plate has a first side that provides a common plane for aligning the front edges of the laser diode bars and a second side opposite the first side. The alignment plate has a plurality of microholes extending between the first and second sides. The method also includes applying suction to the plurality of laser diode bars through the plurality of microholes. The suction draws the front edges of the laser diode bars against the first side of the alignment plate such that the front edges of the laser diode bars are aligned in the common plane. Conductive plates used to clamp the plurality of laser diodes therebetween may be aligned in a similar fashion. An example method includes stacking a plurality of laser diode bars proximate an alignment plate. Each respective laser diode bar has a front edge through which the respective laser diode bar emits light. The alignment plate has a first side that provides a common plane for ...More Less
17 US2020142034A1
Parallax Compensating Spatial Filters
Publication/Patent Number: US2020142034A1 Publication Date: 2020-05-07 Application Number: 16/236,442 Filing Date: 2018-12-29 Inventor: Shepard, Ralph Hamilton   Gassend, Blaise   Droz, Pierre-yves   Assignee: Waymo LLC   IPC: G01S7/481 Abstract: One example system includes a lens disposed relative to a scene and configured to focus light from the scene. The system also includes an opaque material. The opaque material defines a plurality of apertures including a primary aperture and one or more secondary apertures. The system also includes one or more light detectors (e.g., a single element detector or an array of detectors) configured to intercept and detect diverging light focused by the lens and transmitted through at least one of the plurality of apertures defined by the opaque material. One example system includes a lens disposed relative to a scene and configured to focus light from the scene. The system also includes an opaque material. The opaque material defines a plurality of apertures including a primary aperture and one or more secondary apertures. The ...More Less
18 US2020088958A1
Transmitter Devices Having Bridge Structures
Publication/Patent Number: US2020088958A1 Publication Date: 2020-03-19 Application Number: 16/669,488 Filing Date: 2019-10-30 Inventor: Droz, Pierre-yves   Schleuning, David   Tazzoli, Augusto   Assignee: Waymo LLC   IPC: G02B6/42 Abstract: The present disclosure relates to optical systems and methods for their manufacture. An example system includes a first substrate that has at least one bridge structure. The bridge structure has a first surface with one or more light-emitter devices disposed on it. The system also includes a second substrate that has a mounting surface that defines a reference plane. The second substrate includes a structure and an optical spacer on the mounting surface. The first and second substrates are coupled together such that the first surface of the first substrate faces the second substrate at an angle with respect to the reference plane. The system also includes at least one spacer coupled to the mounting surface. The at least one spacer is in physical contact with the one or more light-emitter devices. The present disclosure relates to optical systems and methods for their manufacture. An example system includes a first substrate that has at least one bridge structure. The bridge structure has a first surface with one or more light-emitter devices disposed on it. The system ...More Less
19 US2020193878A1
VISUAL COMMUNICATION SYSTEM
Publication/Patent Number: US2020193878A1 Publication Date: 2020-06-18 Application Number: 16/219,276 Filing Date: 2018-12-13 Inventor: Shepard, Ralph Hamilton   Droz, Pierre-yves   Verghese, Simon   Assignee: Waymo LLC   IPC: G09F13/04 Abstract: This technology relates to a display mounted messaging system. The display mounted messaging system may include a light emitting diode (LED) display attached to a housing of a sensor. The housing of the sensor may rotate. The display mounted messaging system may also include an LED controller which is configured to selectively activate and deactivate at least one LED in the LED display, to provide a message in the direction of an intended recipient. This technology relates to a display mounted messaging system. The display mounted messaging system may include a light emitting diode (LED) display attached to a housing of a sensor. The housing of the sensor may rotate. The display mounted messaging system may also include an ...More Less
20 EP3658950A1
ROTATING LIDAR WITH CO-ALIGNED IMAGER
Publication/Patent Number: EP3658950A1 Publication Date: 2020-06-03 Application Number: 18842964.1 Filing Date: 2018-07-13 Inventor: Droz, Pierre-yves   Verghese, Simon   Hermalyn, Brendan   Assignee: Waymo LLC   IPC: G01S7/497