Peter N Thomas

US Patent:

7786438, Aug 31, 2010

Filed:

Jul 21, 2008

Appl. No.:

12/176490

Inventors:

Nathan DeVilbiss - Sandia Park NM, US
Ryan Olcott - Rio Rancho NM, US
Peter Thomas - Albuquerque NM, US
Gregory Spanjers - Sandia Park NM, US
James Winter - Albuquerque NM, US
Jason Guarnieri - Albuquerque NM, US
Timothy Klatt - Albuquerque NM, US
Holly Victorson - Albuquerque NM, US
Thomas Roberts - Albuquerque NM, US
Robert Thompson - Marina Del Rey CA, US

Assignee:

The United States of America as represented by the Secretary of the Airforce - Washington DC

International Classification:

G01J 5/00

US Classification:

250332

Abstract:

A sensor assembly that replaces a single focal plane array detector with two focal plane array detectors orientated with respect to each other such that a power splitter divides an incoming light source equally between each detector. The two detectors are selected such that the locations of poorly-operating pixels in each detector do not overlay. The output signals of each detector are then electronically or analytically combined to yield 100 percent operability. Separate switchable wavelength filter wheels having one or more different wavelength filters may be positioned between the power splitter and each of the detectors. The power splitter may be replaced by a polarization splitter. One detector can be translated perpendicular to the incoming light source relative to the second detector to compensate for new poorly-operating pixels and/or to improve the spatial resolution.

US Patent:

8398922, Mar 19, 2013

Filed:

Oct 8, 2010

Appl. No.:

12/900587

Inventors:

Samuel P. Forry - Rockville MD, US
Peter C. Thomas - Germantown MD, US

Assignee:

The United States of America as represented by the Secretary of Commerce, The National Institute of Standards and Technology - Washington DC

International Classification:

G01N 15/06
G01N 33/00
G01N 33/48

US Classification:

422 83, 422 50, 422 94, 422 97, 422 98, 422 681, 422 8205, 422 8206, 422 8207, 422 8208

Abstract:

An oxygen sensor comprising an oxygen sensing compound and configured to substantially mitigate leaching of the oxygen sensing compound from the oxygen sensor to an outer surface thereof is provided. The oxygen sensor may comprise one or more layers. A first portion of the oxygen sensor is configured to be permeable to gas and comprises an oxygen sensing material. A second portion is disposed with or on the first portion and is configured to be permeable to gas and substantially impermeable to the oxygen sensing material.