Michael Kasper Lamvik

US Patent:

7495638, Feb 24, 2009

Filed:

May 13, 2003

Appl. No.:

10/437091

Inventors:

Michael K. Lamvik - Durham NC, US
Gary E. McGuire - Chapel Hill NC, US

Assignee:

Research Triangle Institute - Research Triangle Park NC

International Classification:

G09G 3/30

US Classification:

345 76

Abstract:

This invention provides a continuous display with non-uniform pixel density, forming a foveated display. A single, continuous display has a higher pixel density at the center of the display than at the periphery of the display. Where two continuous displays are used in accordance with the present invention, the central forward gaze of the viewer's image will be displayed in high resolution while the leftmost portion of the left eye display will be in low resolution and the rightmost portion of the right eye display will be in low resolution. The pixel resolution of the visual display may correspond to the visual acuity of the human eye. A foveated image display system using a continuous display with non-uniform pixel density increases the field of view while reducing the image bandwidth. A foveated image display system may be hardware-based by employing anamorphic lenses or sensors rather than relying upon image interpolation to modify the resolution of the resultant image data communicated to the continuous display with non-uniform pixel density.

US Patent:

20030223111, Dec 4, 2003

Filed:

May 31, 2002

Appl. No.:

10/160992

Inventors:

Michael Lamvik - Carrboro NC, US
Sonia Grego - Carrboro NC, US
Gary McGuire - Carrboro NC, US

Assignee:

MCNC

International Classification:

G02B021/00
G02B021/26

US Classification:

359/394000, 359/368000, 359/391000, 359/393000

Abstract:

A sample analysis device is provided, the device comprising a frame adapted to accept at least one analysis apparatus, with each analysis apparatus having an analysis distance associated therewith. A eucentric goniometer is operably engaged with the frame and is adapted to eucentrically support a sample at a eucentric point within a reference system defined by the eucentric goniometer. The reference system of the eucentric goniometer is independent of the analysis distance. An axial adjustment device is operably engaged with at least one of the frame and the eucentric goniometer and is configured to coincidentally position the eucentric point and the analysis distance for the respective analysis apparatus. An associated device and method are also provided.

US Patent:

20100183302, Jul 22, 2010

Filed:

Apr 16, 2008

Appl. No.:

12/663610

Inventors:

Michael Lamvik - Durham NC, US
Scott Goodwin - Hillsborough NC, US
Gary E. McGuire - Chapel Hill NC, US

Assignee:

Research Triangle Institute - Research Triangle Park NC

International Classification:

H04J 14/00
G02B 6/26
G02B 6/36

US Classification:

398 45, 385 16, 385 89

Abstract:

An optical device for switching an optical signal between a first optical path and a second optical path, including a substrate, a first guide forming at least a portion of the first optical path, formed on the substrate, and having a movable portion separated from the substrate, a second guide forming at least a portion of the second optical path and disposed adjacent to the first guide, and means for electro statically bending the movable portion so as to optically couple the first guide to the second guide.

US Patent:

20110272141, Nov 10, 2011

Filed:

Mar 2, 2011

Appl. No.:

13/039288

Inventors:

Samuel J. Lewis - Duncan OK, US
Anthony Badalamenti - Katy TX, US
James Lynn Davis - Duncan OK, US
Vijay Gupta - Morrisville NC, US
Michele Ostraat - Durham NC, US
David F. Myers - Cary NC, US
Michael Lamvik - Durham NC, US
Andrew K. Dummer - Chapel Hill NC, US
Vikram Rao - Chapel Hill NC, US
Lawrence R. Roberts - Action MA, US
Paul Hoertz - Morrisville NC, US

Assignee:

Halliburton Law Department - Houston TX

International Classification:

E21B 33/13
C09K 8/00

US Classification:

166247, 166292, 166293, 166294, 507224, 507225, 507219, 507214

Abstract:

The present invention relates to methods useful for isolating a portion of a wellbore. In one embodiment, a method includes preparing a sealant composition containing a set modifier component. The sealant composition is placed into the wellbore and is subjected to ionizing radiation that alters the set modifier component, triggering the thickening of the sealant composition.

US Patent:

20110272142, Nov 10, 2011

Filed:

Mar 2, 2011

Appl. No.:

13/039292

Inventors:

Samuel J. Lewis - Duncan OK, US
Gary Funkhouser - Duncan OK, US
Anthony Badalamenti - Katy TX, US
Vikram Rao - Chapel Hill NC, US
David F. Myers - Cary NC, US
Vijay Gupta - Morrisville NC, US
James Lynn Davis - Holly Springs NC, US
Michael Lamvik - Durham NC, US
Paul Hoertz - Morrisville NC, US
Lynn Margaret Soby - Apex NC, US
Andrew K. Dummer - Chapel Hill NC, US

Assignee:

Halliburton Law Department - Houston TX

International Classification:

E21B 33/13
C09K 8/00
E21B 43/00

US Classification:

166247, 166292, 166294, 166293, 507224, 507225, 507219, 507214

Abstract:

The present invention includes methods and compositions relating to the setting of fluids or slurries in a wellbore. In one embodiment, a method of isolating a portion a wellbore includes preparing a sealant composition having a fluid component, a polymeric additive constituent, and a set modifier component. The sealant composition is placed into a wellbore and subjected to ionizing radiation. The ionizing radiation can cause bonding between polymeric additive constituents and create a polymer matrix within the sealant composition that increases the mechanical strength of the sealant composition. The ionizing radiation also alters the set modifier component, triggering the thickening of the sealant composition.

US Patent:

20120033403, Feb 9, 2012

Filed:

Apr 14, 2010

Appl. No.:

13/258212

Inventors:

Michael Kasper Lamvik - Durham NC, US
James Lynn Davis - Holly Springs NC, US

Assignee:

Research Triangle Institute - Research Triangle Park NC

International Classification:

F21V 9/16
F21V 7/04

US Classification:

362 84

Abstract:

A stimulated lighting device for stimulatable light emission including a luminescent sheet including light stimulatable particles which emit secondary light upon receiving primary light. The lighting device includes a source configured to generate and direct the primary light obliquely onto the luminescent sheet, at least one reflector configured to reflect at least a part of the primary light and a part of the secondary light onto the luminescent sheet and configured to reflect at least a part of scattered primary light and a part of the secondary light from the luminescent sheet toward the light exit, and a light exit configured to emanate light as a combination of the primary light and the secondary light.

US Patent:

20120080612, Apr 5, 2012

Filed:

Feb 26, 2010

Appl. No.:

13/259791

Inventors:

Sonia Grego - Durham NC, US
Kristin Hedgepath Gilchrist - Durham NC, US
David Edward Dausch - Raleigh NC, US
Michael Kasper Lamvik - Durham NC, US

Assignee:

Research Triangle Institute - Research Triangle Park NC

International Classification:

G01N 21/64
G01N 21/55
H01L 41/22
G01J 3/44
H01L 21/02
G02B 26/10
G01B 9/02

US Classification:

2504581, 3592012, 3591994, 3592131, 356445, 356479, 356301, 29428, 29 2501, 29 2535

Abstract:

The present invention relates to an optical scanning apparatus and an optical scanning system The optical system includes an optical engine connected to an optical scanning probe The optical scanning probe images a sample at different lateral positions of the sample The optical scanning probe includes a housing having a longitudinal axis extending in a direction towards a sample to be scanned, a first base having a first moveable mirror supported thereon by a first cantilever connecting the first moveable mirror to the first base, a second base having a second moveable mirror supported thereon by a second cantilever connecting the second moveable mirror to the second base, and a support attaching the first and second bases so that the first moveable mirror and the second moveable mirror are disposed along the longitudinal axis apart from each other

US Patent:

20120281428, Nov 8, 2012

Filed:

Nov 17, 2010

Appl. No.:

13/513433

Inventors:

James Lynn Davis - Holly Springs NC, US
Howard J. Walls - Apex NC, US
Karmann Mills - Apex NC, US
Vijay Gupta - Morrisville NC, US
Michael Kasper Lamvik - Durham NC, US

Assignee:

RESEARCH TRIANGLE INSTITUTE - Research Triangle Park NC

International Classification:

G02B 5/02
B82Y 20/00

US Classification:

362555, 362558, 977932

Abstract:

A fiber-based reflective lighting device and a lighting device. The fiber-based reflective lighting device includes a source configured to generate a primary light, a mat of reflective fibers which diffusely reflects light upon illumination with at least the primary light, and a light exit configured to emanate the reflected light. The lighting device includes a housing, a source configured to generate primary light and direct the primary light into the housing, a reflective mat of fibers disposed inside the housing at a position to reflect the primary light, and a light exit in the housing configured to emanate the reflected light from the housing.