David R Sandison

US Patent:

58384359, Nov 17, 1998

Filed:

Oct 20, 1997

Appl. No.:

8/953814

Inventors:

David R. Sandison - Edgewood NM

Assignee:

Sandia Corporation - Albuquerque NM

International Classification:

G01J 110
G01J 3443
G01N 2164

US Classification:

356243

Abstract:

Calibration spots of optically-characterized material placed in the field of view of a spectroscopic system allow calibration of the spectroscopic system. Response from the calibration spots is measured and used to calibrate for varying spectroscopic system operating parameters. The accurate calibration achieved allows quantitative spectroscopic analysis of responses taken at different times, different excitation conditions, and of different targets.

US Patent:

62556592, Jul 3, 2001

Filed:

Jul 10, 1998

Appl. No.:

9/113686

Inventors:

David R. Sandison - Edgewood NM

Assignee:

Sandia Corporation - Albuquerque NM

International Classification:

G01T 104

US Classification:

2504741

Abstract:

A new class of ultraviolet dosimeters is made possible by exposing caged dye molecules, which generate a dye molecule on exposure to ultraviolet radiation, to an exterior environment. Applications include sunburn monitors, characterizing the UV exposure history of UV-sensitive materials, especially including structural plastics, and use in disposable `one-use` optical equipment, especially medical devices.

US Patent:

59299851, Jul 27, 1999

Filed:

Mar 18, 1997

Appl. No.:

8/820299

Inventors:

David R. Sandison - Moriarty NM
Mark R. Platzbecker - Albuquerque NM
Michael R. Descour - Tucson AZ
David L. Armour - Albuquerque NM
Marcus J. Craig - Albuquerque NM

Assignee:

Sandia Corporation - Albuquerque NM

International Classification:

G01N 2163

US Classification:

356318

Abstract:

A multispectral imaging probe delivers a range of wavelengths of excitation light to a target and collects a range of expressed light wavelengths. The multispectral imaging probe is adapted for mobile use and use in confined spaces, and is sealed against the effects of hostile environments. The multispectral imaging probe comprises a housing that defines a sealed volume that is substantially sealed from the surrounding environment. A beam splitting device mounts within the sealed volume. Excitation light is directed to the beam splitting device, which directs the excitation light to a target. Expressed light from the target reaches the beam splitting device along a path coaxial with the path traveled by the excitation light from the beam splitting device to the target. The beam splitting device directs expressed light to a collection subsystem for delivery to a detector.

US Patent:

59203994, Jul 6, 1999

Filed:

Mar 18, 1997

Appl. No.:

8/820298

Inventors:

David R. Sandison - Moriarty NM
Mark R. Platzbecker - Albuquerque NM
Timothy D. Vargo - Albuquerque NM
Randal R. Lockhart - Lorain OH
Michael R. Descour - Tucson AZ

Assignee:

Sandia Corporation - Albuquerque NM

International Classification:

G01N 2125
G01N 2164
G01J 330
F21K 200

US Classification:

356418

Abstract:

A multispectral imaging method and apparatus adapted for use in determining material properties, especially properties characteristic of abnormal non-dermal cells. A target is illuminated with a narrow band light beam. The target expresses light in response to the excitation. The expressed light is collected and the target's response at specific response wavelengths to specific excitation wavelengths is measured. From the measured multispectral response the target's properties can be determined. A sealed, remote probe and robust components can be used for cervical imaging.