The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 2005
Filed:
Oct. 21, 2003
William E. Ortyn, Bainbridge Island, WA (US);
David A. Basiji, Seattle, WA (US);
Keith L. Frost, Seattle, WA (US);
N. Robert Mcruer, Mercer Island, WA (US);
William E. Ortyn, Bainbridge Island, WA (US);
David A. Basiji, Seattle, WA (US);
Keith L. Frost, Seattle, WA (US);
N. Robert McRuer, Mercer Island, WA (US);
Amnis Corporation, Seattle, WA (US);
Abstract
An illumination system for increasing a light signal from an object passing through a reflection cavity. The reflection cavity is defined by spaced-apart, opposed first and second surfaces disposed on opposite sides of a central volume. Preferably the first reflecting surface forms an acute angle with the second reflecting surface. A beam of light is directed into the reflection cavity so that light is reflected back and forth between the first and second surfaces a plurality of times, illuminating a different portion of the central volume with each pass until, having ranged over the central volume, the light exits the reflection cavity. The 'recycling' of the light beam in this manner substantially improves the signal to noise ratio of a detection system used in conjunction with the reflection cavity by increasing an average illumination intensity in the central volume.