George D Hopkins

US Patent:

51403528, Aug 18, 1992

Filed:

Oct 31, 1990

Appl. No.:

7/606741

Inventors:

Robert D. Moore - San Mateo CA
George W. Hopkins - Sunnyvale CA

Assignee:

Occipital, Inc. - San Mateo CA

International Classification:

A61B 314
G03B 700
G03B 2900

US Classification:

354 62

Abstract:

A method and apparatus are disclosed for converting the 35 mm image from a conventional fundus camera into a size suitable for recording by a conventional solid state CCD module. The CCD camera connects to the fundus camera using a bayonet attachment. The aerial image created by the fundus camera is received and transmitted through the CCD camera along a folded mirror optical path, and is reduced and aligned for detection by the CCD module. The optical path contains a pair of adjustable mirrors to allow compensation for variations in the focal lengths between various fundus cameras. An articulating mirror may be included to enable the user to pan across the aerial image while recording segmented views for reconstruction by an external computer into a composite, high resolution image.

US Patent:

55066780, Apr 9, 1996

Filed:

Feb 24, 1992

Appl. No.:

7/840108

Inventors:

William F. Carlsen - Woodside CA
Tad D. Simons - Palo Alto CA
Richard J. Pittaro - San Carlos CA
George W. Hopkins - Sunnyvale CA
Damien F. Gray - Mountain Veiw CA

Assignee:

Hewlett Packard Company - Palo Alto CA

International Classification:

G01N 2100
G01J 3144

US Classification:

356338

Abstract:

A System for Collecting Weakly Scattered Electromagnetic Radiation is disclosed. The present invention overcomes problems suffered by previous collection systems by providing a reliable and efficient device for intensifying and collecting the scattered radiation generated by laser induced scattering. The present invention employs a laser source which illuminates an unknown gas contained by a long hollow tube having a highly reflective sheathing. The illuminating electromagnetic radiation from the laser is directed along the entire length of the tube and collides with the molecules of the unknown gas in the tube. The collisions cause the emission of weakly scattered electromagnetic radiation that is shifted in reference to the illuminating radiation. The sheathing is sufficiently reflective of the scattered radiation to substantially contain it. An exit is coupled to the long hollow tube in such a way that the scattered radiation may pass from the reflective sheathing and be collected for analysis.

US Patent:

54501938, Sep 12, 1995

Filed:

Apr 11, 1994

Appl. No.:

8/226245

Inventors:

William F. Carlsen - Woodside CA
Tad D. Simons - Palo Alto CA
Richard J. Pittaro - San Carlos CA
Jeffrey Perry - Cupertino CA
George W. Hopkins - Sunnyvale CA
Damien F. Gray - Mountain View CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

G01J 344

US Classification:

356301

Abstract:

Method and apparatus for determining the composition and concentration of gases present in a patient's airway by measurement of the spectrum of Raman scattered light from these gases. The efficiency is improved by collecting Raman scattered light generated outside the collection region. The gases present are assumed to be drawn from a predetermined set of gases with known Raman scattering spectra, and the concentrations are determined by solution of a matrix equation Ac=b, where the c vector components are the unknown concentrations and the b vector components are determined from measurements of the Raman scattering intensifies in a plurality of wavelength or wavenumber intervals. The linear system of equations represented by the matrix equation may be overdetermined and may require solution by non-conventional methods, such as singular value decomposition.

Author:

George E. Hopkins

ISBN #:

0674012755

Author:

George E. Hopkins

ISBN #:

0896723577

Author:

George E. Hopkins

ISBN #:

0960970800

Author:

George W. Hopkins

ISBN #:

0892522208