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:
Jul. 12, 1983
Filed:
Feb. 17, 1981
Robert B Hill, Portland, OR (US);
Eye-D Development II Ltd., Portland, OR (US);
Abstract
In a method and apparatus for acquiring and recording an identification pattern from the reflectance of the fundus of an eye, a single light source is operable to produce a substantially columnar source beam of infrared light directed into the fixated eye from a plurality of sequential, angularly divergent positions. The light is focused on the retina and reflected in part out of the eye. Variations in the ocular structure contribute to various reflected intensities. The intensity of the reflected light is detected, measured and recorded for each sequential angularly divergent position forming a unique and repeatable identification pattern, or 'signature' for each individual.