Scott W Mathews

US Patent:

7997732, Aug 16, 2011

Filed:

Oct 31, 2008

Appl. No.:

12/262696

Inventors:

Jessica C. Ramella-Roman - Washington DC, US
Mark Mirotznik - Silver Spring MD, US
Scott A. Mathews - Germantown MD, US

Assignee:

The Catholic University of America - Washington DC

International Classification:

A61B 3/10
A61B 3/14
G02B 27/10

US Classification:

351213, 351206, 359619

Abstract:

The multi-aperture system of the present invention provides a retinal oximetry apparatus for determining the level of oxygen saturation in retinal vessels using a lenslet array comprising at least seven lenses for the simultaneous measurement of reflected light with at least three wavelengths and at least four polarization states. The multi-aperture system of the present invention further provides an apparatus for determining the level of oxygen saturation in retinal vessels using a lenslet array comprising at least ten lenses for the simultaneous measurement of reflected light with at least three wavelengths for oxygen measurement, at least three wavelengths for melanin content, and at least four polarization states. Methods of operating the same are also provided.

US Patent:

8308299, Nov 13, 2012

Filed:

Jul 7, 2011

Appl. No.:

13/177742

Inventors:

Jessica C. Ramella-Roman - Washington DC, US
Scott A. Mathews - Germantown MD, US
Mark Mirotznik - Silver Spring MD, US

Assignee:

The Catholic University of America - Washington DC

International Classification:

A61B 3/00
A61B 3/14
A61B 3/10
G02B 27/10

US Classification:

351246, 351206, 351213, 359619

Abstract:

The multi-aperture system of the present invention provides a retinal oximetry apparatus for determining the level of oxygen saturation in retinal vessels using a lenslet array comprising at least seven lenses for the simultaneous measurement of reflected light with at least three wavelengths and at least four polarization states. The multi-aperture system of the present invention further provides an apparatus for determining the level of oxygen saturation in retinal vessels using a lenslet array comprising at least ten lenses for the simultaneous measurement of reflected light with at least three wavelengths for oxygen measurement, at least three wavelengths for melanin content, and at least four polarization states. Methods of operating the same are also provided.

US Patent:

20040022947, Feb 5, 2004

Filed:

Aug 1, 2002

Appl. No.:

10/208802

Inventors:

Michael Duignan - Washington DC, US
Scott Mathews - Germantown MD, US

International Classification:

B05D003/00
B23K026/00

US Classification:

427/271000, 427/555000

Abstract:

A method of creating microstructures by contact transfer process includes the step of positioning a material covered ribbon in proximity with the surface of the substrate, directing a laser beam onto the material covered ribbon, so that the laser beam releases a portion of the material layer and transfers the released material onto the surface of the substrate. The material covered ribbon includes a transparent support and a material layer of the thickness in the range of 2-15 microns of highly homogeneous and uniformly distributed material, which includes a powder of very small particles the dimensions of which do not exceed 10 microns bound by a binder which provides a needed degree of viscosity to the material, which, being released from the material layer, is transferred to the surface of the substrate as a single piece. In order to create a microstructure, several repetitions of releasing the material and transferring the released material to the substrate is needed. Very fine features with no edge irregularities are created by this method.