Lane A Martin

US Patent:

20110308580, Dec 22, 2011

Filed:

Jan 7, 2011

Appl. No.:

12/930507

Inventors:

Jan Seidel - Oakland CA, US
Ramamoorthy Ramesh - Moraga CA, US
Lane Martin - Champaign IL, US

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

H01L 31/02
G11B 5/65

US Classification:

136252, 4288361

Abstract:

Ferroic materials and methods for diverse applications including nanoscale memory, logic and photovoltaic devices are described. In one aspect, ferroic thin films including insulating domains separated by conducting domain walls are provided, with both the insulating domains and conducting domain walls intrinsic to the ferroic thin films. The walls are on the order of about 2 nm wide, providing virtually two dimensional conducting sheets through the insulating material. Also provided are methods of writing, reading, erasing and manipulating conducting domain walls. According to various embodiments, logic and memory devices having conducting domain walls as nanoscale features are provided. In another aspect, ferroic thin films having photovoltaic activity are provided. According to various embodiments, photovoltaic and optoelectronic devices are provided.

US Patent:

20220291353, Sep 15, 2022

Filed:

May 25, 2022

Appl. No.:

17/752954

Inventors:

- Orlando FL, US
Matthew D. Weed - Orlando FL, US
Lane A. Martin - Vancouver WA, US
Jason M. Eichenholz - Orlando FL, US
Austin K. Russell - Orlando FL, US

International Classification:

G01S 7/481
G01S 17/08
G01S 7/4865
G01S 7/48
G01S 17/42
G01S 17/931
G01S 17/89
G02B 26/10

Abstract:

In one embodiment, a lidar system includes a light source configured to emit pulses of light and a scanner configured to scan at least a portion of the emitted pulses of light along a scan pattern contained within an adjustable field of regard. The scanner includes a first scanning mirror configured to scan the portion of the emitted pulses of light substantially parallel to a first scan axis to produce multiple scan lines of the scan pattern. The scanner also includes a second scanning mirror configured to distribute the scan lines along a second scan axis, where the scan lines are distributed within the adjustable field of regard according to an adjustable second-axis scan profile that includes a minimum scan angle along the second scan axis, a maximum scan angle along the second scan axis, and a scan-line distribution.

US Patent:

20200284906, Sep 10, 2020

Filed:

May 20, 2020

Appl. No.:

16/879091

Inventors:

- Orlando FL, US
Scott R. Campbell - Sanford FL, US
John E. McWhirter - Winter Park FL, US
Matthew D. Weed - Orlando FL, US
Lane A. Martin - Sunnyvale CA, US

International Classification:

G01S 17/08
G01S 7/481
G02B 26/10
G02B 26/12
H01L 27/146
G01S 17/42
G01S 17/931
G02B 5/09
G02B 7/182
G01S 17/89
G02B 27/09
G02B 27/10
G02B 27/30
H01L 25/16

Abstract:

A lidar system includes one or more light sources configured to generate a first beam of light and a second beam of light, a scanner configured to scan the first and second beams of light across a field of regard of the lidar system, and a receiver configured to detect the first beam of light and the second beam of light scattered by one or more remote targets. The scanner includes a rotatable polygon mirror that includes multiple reflective surfaces angularly offset from one another along a periphery of the polygon mirror, the reflective surfaces configured to reflect the first and second beams of light to produce a series of scan lines as the polygon mirror rotates. The scanner also includes a pivotable scan mirror configured to (i) reflect the first and second beams of light and (ii) pivot to distribute the scan lines across the field of regard.

US Patent:

20200256964, Aug 13, 2020

Filed:

Apr 29, 2020

Appl. No.:

16/861696

Inventors:

- Orlando FL, US
Lane A. Martin - Sunnyvale CA, US
Matthew D. Weed - Orlando FL, US
Jason M. Eichenholz - Orlando FL, US

International Classification:

G01S 7/4865
G01S 7/4861
G01S 17/10
G01S 7/486
G01S 17/42

Abstract:

A lidar system includes a light source, a scanner, and a receiver and is configured to detect remote targets located up to Rmeters away. The receiver includes a detector with a field of view larger than the light-source field of view. The scanner causes the detector field of view to move relative to the instantaneous light-source field of view along the scan direction, so that (i) when a pulse of light is emitted, the instantaneous light-source field of view is approximately centered within the detector field of view, and (ii) when a scattered pulse of light returns from a target located Rmeters away, the instantaneous light-source field of view is located near an edge of the field of view of the detector and is contained within the field of view of the detector.

US Patent:

20190250254, Aug 15, 2019

Filed:

Apr 22, 2019

Appl. No.:

16/390923

Inventors:

- Orlando FL, US
Rodger W. Cleye - Aliso Viejo CA, US
Jason M. Eichenholz - Orlando FL, US
Lane A. Martin - Sunnyvale CA, US
Matthew D. Weed - Orlando FL, US

International Classification:

G01S 7/481
G01S 17/42
G01S 17/87
G01S 17/10
G01S 7/486

Abstract:

A system includes a first lidar sensor and a second lidar sensor, where each lidar sensor includes a scanner configured to direct a set of pulses of light along a scan pattern and a receiver configured to detect scattered light from the set of light pulses. The scan patterns are at least partially overlapped in an overlap region. The system further includes an enclosure, where the first lidar sensor and the second lidar sensor are contained within the enclosure. Each scanner includes one or more mirrors, and each mirror is driven by a scan mechanism.

US Patent:

20190242978, Aug 8, 2019

Filed:

Apr 19, 2019

Appl. No.:

16/389362

Inventors:

- Orlando FL, US
Scott R. Campbell - Sanford FL, US
Lane A. Martin - Sunnyvale CA, US
Jason M. Eichenholz - Orlando FL, US
Austin K. Russell - Orlando FL, US

International Classification:

G01S 7/484
G01S 7/481
G01S 17/10
G01S 17/42
G01S 7/497

Abstract:

To compensate for the uneven distribution of data points around the periphery of a vehicle in a lidar system, a light source transmits light pulses at a variable pulse rate according to the orientation of the light pulses with respect to the lidar system. A controller may communicate with a scanner in the lidar system that provides the orientations of the light pulses to the controller. The controller may then provide a control signal to the light source adjusting the pulse rate based on the orientations of the light pulses. For example, the pulse rate may be slower near the front of the lidar system and faster near the periphery. In another example, the pulse rate may be faster near the front of the lidar system and slower near the periphery.

US Patent:

20190235052, Aug 1, 2019

Filed:

Apr 8, 2019

Appl. No.:

16/378315

Inventors:

- Orlando FL, US
Matthew D. Weed - Orlando FL, US
Scott R. Campbell - Sanford FL, US
Jason M. Eichenholz - Orlando FL, US
Austin K. Russell - Orlando FL, US
Lane A. Martin - Sunnyvale CA, US

International Classification:

G01S 7/484
G01S 7/00
G01W 1/02
G01S 7/497
G01S 17/10
G01W 1/14
G01S 17/42

Abstract:

In one embodiment, a method for dynamically varying receiver characteristics in a lidar system includes emitting light pulses by a light source in a lidar system. The method further includes detecting, by a receiver in the lidar system, light from one of the light pulses scattered by one or more remote targets to identify a return light pulse. The method also includes determining an atmospheric condition at or near a geolocation of a vehicle that includes the lidar system. The method further includes providing a control signal to the receiver adjusting one or more characteristics of the receiver to compensate for attenuation or distortion of the return light pulses associated with the atmospheric condition.

US Patent:

20190154802, May 23, 2019

Filed:

Apr 27, 2018

Appl. No.:

15/965288

Inventors:

- Orlando FL, US
Jason M. Eichenholz - Orlando FL, US
Matthew D. Weed - Winter Park FL, US
Lane A. Martin - Sunnyvale CA, US

International Classification:

G01S 7/481
G02B 26/10

Abstract:

A lidar system includes one or more light sources configured to generate a first and second beams of light, a scanner configured to synchronously scan a field of regard of the lidar system using the two beams, and a receiver configured to detect light of the two beams scattered by one or more remote targets. The scanner includes a rotatable polygon mirror having a block having a first wall, a second wall, and reflective surfaces extending between the first and second walls, the reflective surfaces being angularly offset from one another along a periphery of the block; a polygon mirror axle extending into the block, about which the block rotates; optical elements configured to direct the first and second beams of light respectively to two adjacent reflective surfaces of the rotatable polygon mirror; and a second mirror pivotable along an axis orthogonal to the polygon mirror axle.