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:
Jun. 22, 2004
Filed:
Nov. 24, 1999
John G. Daugman, Huntingdon, GB;
Iridian Technologies, Inc., Moorestown, NJ (US);
Abstract
An imaging apparatus which can be used to capture high-quality iris images for identification of a person. The iris imager comprises a camera, a cold mirror, a lens, an illuminator, and a focus assessment processor. The imager has sensors and indicators which assist a user in aligning and focusing the device. The imager also automatically captures the image when proper positioning is achieved. The focus assessment processor accesses the image and applies certain measurement routines to assess the focus. The output of the focus assessment processor is used to control an indicator. A template representative of the iris features is extracted and then compared to a database of previously stored templates to identify the person.